tm 5-5420-226-10 m48a5

OPERATOR'S MANUAL

TM 5-5420-226-10

TABLE OF

CONTENTS

PAGE i

INTRODUCTION

PAGE 1-1

OPERATING

INSTRUCTIONS

PAGE 2-1

M A I N T E N A N C E

INSTRUCTIONS

PAGE 3-1

R E F E R E N C E S

PAGE A-1

COMPONENTS OFEND ITEM OFBASIC ISSUE ITEMSL ISTSPAGE B-1

A D D I T I O N A L

AUTHORIZATION LIST

PAGE C-1

E X P E N D A B L E

SUPPLIES AND

MATERIALS LIST

PAGE D-1

STOWAGE ANDSIGN GUIDEPAGE E-1

SUBJECT INDEX

PAGE I-1

LAUNCHERAND

M48A5 TANK CHASSIS,TRANSPORTING:

FOR BRIDGE,ARMORED-VEHICLE-LAUNCHED

SCISSORING TYPE, CLASS 605420-01-076-6096

HEADQUARTERS, DEPARTMENT OF THE ARMY

FEBRUARY 1981This copy is a reprint which includes current

TA106155pages from Changes 1 through 8.

TM 5-5420-226-10

CARBON MONOXIDE POISONING CAN BE DEADLY.

Carbon monoxide is a colorless, odorless, deadly poisonous gas, whichwhen breathed, deprives the body of oxygen and causes suffocation.Exposure to air contaminated with carbon monoxide produces symptomsof headache, dizziness, loss of muscular control., apparent drowsiness,and coma. Permanent brain damage or death can result from severeexposure. It occurs in the exhaust fumes of fuel-burning heaters andinternal combustion engines and becomes dangerously concentratedunder conditions of inadequate ventilation. The following precautionsmust be observed to insure the safety of personnel whenever thepersonnel heater, main, or auxiliary engine of any vehicle is operated formaintenance purposes or tactical use.

1.

2.

3

4.

5.

DO NOT operate heater or engine of vehicle in an enclosed areaunless it is ADEQUATELY VENTILATED.

DO NOT idle engine for long periods without ventilator bloweroperating. If tactical situation permits, open hatches.

DO NOT drive any vehicle with inspection plates, cover plates, orengine compartment doors removed unless necessary for maintenancepurposes.

BE ALERT at all times during vehicle operation for exhaust odors andexposure symptoms. I f e i ther are present, IMMEDIATELYVENTILATE personnel compartments. If symptoms persist, removeaffected personnel from vehicle and treat as follows: expose to freshair; keep warm; DO NOT PERMIT PHYSICAL EXERCISE: if neces-sary, administer artificial respiration.

Neither the gas-particulate filter unit nor the M25A1 protectivemask will protect you against carbon monoxide poisoning.

THE BEST DEFENSE AGAINST CARBON MONOXIDE POISONING ISADEQUATE VENTILATION.

For artificial respiration, refer to FM 21-11.

TA106156

TM 5-5420-226-10C8

CHANGE

NO. 8

HEADQUARTERSDEPARTMENT OF THE ARMY

Washington, D.C., 1 May 1996

OPERATOR’S MANUAL

LAUNCHER

AND

M48A5 TANK CHASSIS,

TRANSPORTING:

FOR BRIDGE,

ARMORED-VEHICLE-LAUNCHED

SCISSORING TYPE, CLASS 60

5420-01-076-6096

TM 5-5420-226-10, dated 20 February 1981, is changed as follows:

1. Remove old pages and insert new pages as indicated below.

2. New or changed material is indicated by a vertical bar in the margin of thepage.

Remove Pages

i and ii2-21 thru 2-342-34.1 and 2-34.22-35 thru 2-422-42.1 thru 2-42.42-43 thru 2-522-52.1 and 2-52.22-53 thru 2-60

Insert Pages

i and ii2-21 thru 2-34None2-35 thru 2-42None2-43 thru 2-52None2-53 thru 2-60

File this change sheet in front of the publication for reference purposes.Approved for public release; distribution is unlimited.

Page 1 of 2

TM 5-5420-226-10C8

Remove Pages

2-60.1 thru 2-60.42-61 thru 2-802-80.1 thru 2-80.42-81 and 2-822-82.1 and 2-82.2None

3-1 and 3-2None

Insert Pages

None2-61 thru 2-80None2-81 and 2-822-82.1 and 2-82.22-83.3 thru 2-82.11/(2-82.12blank)3-1 and 3-2F-1 thru F-8

By Order of the Secretary of the Army:

DENNIS J. REIMERGeneral, United States Army

Chief of Staff

Administrative Assistant to theSecretary of the Army

01887

DISTRIBUTION:To be distributed in accordance with DA Form 12-37-E, block 1220, requirements for

TM 5-5420-226-10.

Page 2 of 2

TM 5-5420-226-10C7

CHANGE

NO. 7


Washington D.C., 1 November 1995

OPERATOR’S MANUAL

LAUNCHER

AND

M48A5 TANK CHASSIS,

TRANSPORTING:

FOR BRIDGE,

ARMORED-VEHICLE-LAUNCHED

SCISSORING TYPE, CLASS 60

5420-01-076-6096

TM 5-5420-226-10, dated 20 February 1981, is changed as follows:

1. Remove old pages and insert new pages

2. New or changed material is indicated bypage.

Remove Pages

a and b1-1 and 1-2NoneA-3/(A-4 blank)

as indicated below.

a vertical bar in the margin of the

Insert Pages

a and b1-1 and 1-22-52.1/(2-52.2 blank)A-3/(A-4 blank)

Approved for public release; distribution is unlimited.

File this change sheet in front of the publication for reference purposes.

By Order of the Secretary of the Army:

DENNIS J. REIMERGeneral United States Army

Chief of Staff

DISTRIBUTION:To be distributed in accordance with DA Form 12-37-E, block 1220, requirements for

TM 5-5420-226-10.

CHANGE

NO. 6

TM 5-5420-226-10C6


Washington, D. C., 11 September 1992

OPERATOR’S MANUAL

LAUNCHERAND

M48A5 TANK CHASSIS,TRANSPORTING:

FOR BRIDGE,ARMORED-VEHICLE-LAUNCHEDSCISSORING TYPE, CLASS 60

5420-01-076-6096

TM 5-5420-226-10, 20 February 1981, is changed as follows:

1. Remove old pages and insert new pages as indicated below.

2. New or changed material is indicated by a vertical bar in thepage.

margin of the

Remove Pages Insert Pages

None a and bb and c c/(d blank)1-5 thru 1-8 1-5 thru 1-82-20.1/(2-20.2 blank)2-23 and 2-242-33 and 2-34None2-42.1 and 2-42.22-60.1 and 2-60.22-65 and 2-662-71 thru 2-762-80.3 and 2-80.42-82.1 and 2-82.22-85 and 2-862-101 and 2-1022-129 and 2-1302-130.5 thru 2-130.82-133 and 2-1342-135 and 2-1362-139 and 2-140None2-141 thru 2-1442-159 and 2-160

2-20.1/(2-20.2 blank)2-23 and 2-242-33 and 2-342-34.1 and 2-34.22-42.1 and 2-42.22-60.1 and 2-60.22-65 and 2-662-71 thru 2-762-80.3 and 2-80.42-82.1 and 2-82.22-85 and 2-862-101 and 2-1022-129 and 2-1302-130.5 thru 2-130.82-133 and 2-1342-135 and 2-1362-139 and 2-1402-140.1 thru 2-140.42-141 thru 2-1442-159 and 2-160

Approved for public release; distribution is unlimited.

File this change sheet in front of the publication for reference purposes.

Page 1 of 2

TM 5-5420-226-10C6

Remove Pages

None2-161 and 2-1623-23 and 3-243-33 and 3-343-54.1 and 3-54.2B-3 and B-4NoneB-5 thru B-21/(B-22 blank)C-1 thru C-3/(C-4 blank)D-3 and D-4

Insert Pages

2-160.1/(2-160.2 blank)2-161 and 2-1623-23 and 3-243-33 and 3-343-54.1 and 3-54.2B-3 and B-4B-4.1/(B-4.2 blank)B-5 thru B-21/(B-22 blank)C-1 thru C-3/(C-4 blank)D-3 and D-4

By Order of the Secretary of Army:

GORDON R. SULLIVANGeneral, United States Army

Chief of Staff

Official:

MILTON H. HAMILTONAdministrative Assistant to the

Secretary of the Army02695

Distribution:To be distributed in accordance with DA Form 12-37-E, Block 1220 operator’s

maintenance requirements for TM 5-5420-226-10.

Page 2 of 2

TM 5-5420-226-10

WARNING

The following summary list is adapted from theever, all warnings should be observed as noted

warnings within the manual. How-in the text.

Make sure all personnel are in a safe position before launching or retrievingbridge.

Neither the gas-particulate filter unit nor the M25A1 protective mask will protectyou against carbon monoxide poisoning.

Make sure fuel tank filler neck and fuel nozzle are touching while refueling.

Do not allow flames or sparks within area while refueling. Have a manned fireextinguisher handy.

Frostbite to the cheekbone area of the face may be experienced by wearers of theM25A1 protective mask from sub-freezing air delivered by the gas-particulate filterunit. Do not connect the protective mask to the filter unit unless the ambienttemperature is well above freezing.

Do not disconnect/connect any part of the electrical equipment with power on.

Operation of this equipment presents a noise hazard to personnel in the area. Thenoise level exceeds the allowable limits for unprotected personnel. Wear ear muffsor ear plugs.

WARNING

HIGH VOLTAGE

High voltage is used in the operation of this equipment. Turn on NIGHT VISIONpower switch only when using IR (infra-red) M24 periscopes. Be sure that IR pow-er cables are connected to prevent accidental shock to personnel.

Change 7 a

TM 5-5420-226-10

WARNING

Dry Cleaning Solvent P-D-680 is toxic and flammable. To avoid injury, wear protec-tive goggles and gloves and use in a well-ventilated area. Avoid contact with skin,eyes, and clothes, and do not breathe vapors. Do not use ‘near open fire or exces-sive heat. The flash point for Type I Dry Cleaning Solvent is 100°F (38°C), and forType II is 140°F (60°C). If you become dizzy while using Dry Cleaning Solvent, getfresh air immediately and get medical aid. If contact with eyes is made, wash youreyes with water and get medical aid immediately.

WARNING

FRH hydraulic fluid may contain tricresyl phosphate which, if taken internally, canproduce paralysis. Hydraulic fluid may be absorbed through the skin. Wear longsleeves, gloves, goggles, and faceshield. If FRH gets in eyes, wash them immedi-ately and get medical aid immediately. If FRH gets on skin, thoroughly wash withsoap and water. Wash hands thoroughly prior to eating or smoking. Application ofthese measures is considered an effective control of the hazard.

WARNING

If NBC exposure is suspected, all air filter media must be handled by personnelwearing protective equipment. Contact your unit NBC Officer or NBC NCO forappropriate handling or disposal.

WARNING

If equipped with mine clearing line charge (MICLIC), wear hearing protection andensure all crew hatches are closed and vehicle exhaust fans are off before launch-ing MICLIC. Failure to do so may result in injury or death to personnel from rocketlaunching fumes and hazardous noise.

b Change 7

TM 5-5420-226-10

Follow ammunition handling procedures when handling and loadingsmoke grenades.smoke grenades contain RP (red phosphorous). This is a fire hazardand is dangerous to all personnel outside vehicle.Never place any part of your body in front of discharger wheninstalling and removing canvas cover or loading and unloadinggrenades.Do not fire smoke grenades while launching bridge. Grenades willstrike bridge and launching mechanism.Particles of the grenade from firing may blow back into the vehicleif fired into gusty winds and may cause a fire.When a misfire or dud occurs, all personnel must remain at least200 meters (219 yards) from vehicle for at least 5 minutes afterfinal attempt to fire. Crew will remain in vehicle with hatchesclosed.Do not allow flames or sparks within area while stowing ammuni-tion. Have a manned fire extinguisher handy.When destroying smoke grenades by fire, cover must be takenwithout delay, since an early explosion of explosive ammunitionmay be caused by the fire.Explosive ammunition or parts containing explosives must be han-dled carefully at all times. Explosive elements in primers andfuses are particularly sensitive to shock and high temperature.Ammunition and parts should not be dropped, thrown, tumbled, ordragged.Before loading grenade into the discharger, be sure each part isfree of sand, mud, moisture, frost, snow, ice, grease or otherforeign matter.

Hearing protection (helmet) required.Double hearing protection (helmet and ear plugs) required on roadmarches at speeds over 15 mph.

Before you work around tracked vehicles, remove rings, bracelets, andwristwatches. These items may be caught in projections and causeinjury or may be shorted across an electrical circuit and cause severeburns and electrical shock.

Change 6 c/(d blank)

TECHNICAL MANUAL

*TM 5-5420-226-10


Washington, D.C., 20 February 1981

O P E R A T O R ’ S M A N U A LL A U N C H E R A N D M 4 8 A 5 T A N K C H A S S I S ,

T R A N S P O R T I N G :F O R B R I D G E , A R M O R E D - V E H I C L E - L A U N C H E D ,

S C I S S O R I N G T Y P E , C L A S S 6 0N S N 5 4 2 0 - 0 1 - 0 7 6 - 6 0 9 6

TABLE OF CONTENTS

CHAPTER 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section I General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Section II Equipment Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAPTER 2 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section I Description and Use of Operator’sControls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section II Preventive Maintenance Checks andServices (PMCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

*This manual supersedes TM 5-5420-226-10, 15 December 1975.

1-1

1-11-2

2-1

2-1

2-21

Change 8 i

TM 5-5420-226-10

TABLE OF CONTENTS-Continued

Section IIISection IV

CHAPTER 3

Section ISection IISection Ill

CHAPTER 4

APPENDIX A

APPENDIX B

Section ISection IISection Ill

APPENDIX C

Section ISection II

APPENDIX D

Operation Under Usual Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Operation Under Unusual Conditions . . . . . . . . . . . . . . . . . . . . . . . . .

MAINTENANCE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lubrication Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AMMUNITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMPONENTS OF END ITEM ANDBASIC ISSUE ITEMS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Components of End Item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Basic Issue Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ADDITIONAL AUTHORIZATIONLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Additional Authorization List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EXPENDABLE SUPPLIES ANDMATERIALS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section I Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Section II Expendable Supplies and Materials List . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

APPENDIX E STOWAGE AND SIGN GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

APPENDIX F LUBRICATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SUBJECT INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-832-

130.10

3-1

3-13-1

3-23

4-1

A-1

B-1

B-1B-3B-5

C-1

C-1C-2

D-1

D-1D-2

E-1

F-1

l-1

ii Change 8

TM 5-5420-226-10

CHAPTER 1

INTRODUCTION

Section I. GENERAL INFORMATION

SCOPE

This manual is for your use in operating and maintaining the M48A5AVLB. This heavily armored vehicle is used for launching and retrievinga scissoring type, class 60 bridge. The two-man crew consists of anoperator and a commander.

MAINTENANCE FORMS AND RECORDS

Department of the Army forms and procedures used for equipment maintenanceare those prescribed by DA PAM 738-750, The Army Maintenance ManagementSystem (TAMMS).

REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR’S)

EIR’s must be submitted by anyone who knows of an unsatisfactory conditionwith equipment design or use. You do not have to show a new design or list abetter way to do a procedure, just tell why the design is unfavorable or whya procedure is hard. EIR’s may be submitted on SF 368, Quality Deficiency Report.Mail directly to Commander, U.S. Army Tank-automotive and ArmamentsCommand, AMSTA-TR-T, Warren, MI 48397-5000. A reply will be sent directlyto you.

C h a n g e 7 1 - 1

TM 5-5420-226-10

Section Il. EQUIPMENT

EQUIPMENT PURPOSE

DESCRIPTION

● Launch, retrieve, and transport scissoring type bridge.

EQUIPMENT CAPABILITIES

● Can be operated in nuclear, biological, or chemical environments.

● Can be operated on rough ground.

● Can be forded in water up to 4 feet deep (1.2 meters) without special equip-ment.

● Can launch or retrieve bridge on uphill or downhill slope of 15% or side slopeof 8%.

EQUIPMENT FEATURES

● Quick launch (2-5 minutes).

Only two persons needed for launch/retrieval of bridge.

● Heavy armor protection for personnel.

WARNING

Before launching mine clearing line charge (MICLIC) (if equipped), wear hearingprotection, close all crew hatches, and turn off vehicle exhaust fans. Failure to doso may result in injury or death to personnel from rocket launching fumes andhazardous noise.

● If vehicle is equipped with mine clearing line charge (MICLIC), refer to TM 9-1375 -215-14&P for operating instructions.

1-2 Change 7

TM 5-5420-226-10

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

The M48A5 AVLB is divided into two sections - hull and launchingmechanism. The hull contains the:

Crew compartment with all controls for operating the launchingmechanism.

Engine compartment with engine and transmission that suppliespower for operating hull and launching mechanism.

Operator and commander cupolas to enter crew compartment.

Cupola vision blocks and periscopes for visual operation whenopenings (hatches) are closed.

Bridge seat on which bridge rests during transporting.

The launcher mechanism contains the:

Hydraulic system - pump, fluid, cylinders, hoses, and other partsfor moving the bridge, outrigger, and tongue during launch andretrieval.

Outrigger - steadies vehicle during bridge launch and retrieval.

Tongue - connects vehicle to bridge.

TA106162

1-3

TM 5-5420-226-10

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - Continued

1. Bridge2. Final drive sprocket3. Roadwheel

4. Support roller (either 3 or 5)5. Track6. Compensating idler wheel

1.2.3.4.5.

Boom and outriggerGuide pinLocking cylinderTonguePintles

6. Ejection cylinders7. Tongue cylinder8. Overhead cylinder9. Holddown cylinder

10. Bridge seat

TA106164

1-4

TM 5-5420-226-10


1. Front fender stowage boxes 7. Ventilating blower cover2. Commander’s cupola 8. Hydraulic oil reservoir3. Hatches 9. Operator’s cupola4. Antenna mount 10. Smoke grenade discharger 5. Engine air cleaners 11. Smoke grenade stowage6. Rear fender stowage boxes boxes

Change 6 1-5

TM 5-5420-226-10

1.2.3.4.5.6.7.8.

9.

Personnel heaterValve bank controlRadioPower take off (PTO), pump-clutch assemblyOperator’s master control panelIndicator panelBatteries (6)Fire extinguishers (3)

Grenade launcher controls

Change 1

TA271854

1-6

TM 5-5420-226-10


1. Fuel tanks 5. Universal joints2. Transmission 6. Engine3. Grille doors 7. Smoke grenade dischargers 4. Final drives 8. Smoke grenade stowage

boxes

Change 6 1-7

TM 5-5420-226-10


FRONT, REAR, RIGHT, AND LEFT DESIGNATIONS

DETAILED DESCRIPTION

If you need a detailed description of any component of the M48A5bridge launcher, ask your supervisor to let you see a copy of TM 5-5420-226-20 (Hull) or TM 5-5420-227-24 (Launcher). Ask for TM 5-5420-203-14 for details on the bridge.

DIFFERENCE BETWEEN MODELS

There are several M48A5 AVLB equipment variations. This manualcovers the following:

Most M48A5 launchers have five support rollers. Some havethree support rollers.

Operator and commander cupolas

Smoke Generator

AN/VVS-2 Night Vision Viewer, or Periscope, M24

Smoke Grenade Launcher

Vehicle Exhaust Dust Ejector System (VEDES) and Dust De-tector System

AVDS-1790-2D Engine or AVDS-1790-2DA Engine

1-8 Change 2

PERFORMANCE DATA

Capacities (fuel and oil):Fuel tanks (total)Engine crankcase (refill)Transmission (refill)Final drivesHydraulic system

Controls:BrakesSteering

TypeTurning capability

TransmissionType

Operation

Dimensions (travel position):Length (w/o bridge)

(w/bridge)Height (w/o bridge)

(w/bridge)Width (w/o bridge)

(w/bridge)Ground clearance

Engine:ModelTypeGoverned speed

full loadno loadidle

Fuel20° to 115°F (-7° to 46°C)-25° to 20°F (-32° to -7°C)-65° to -25°F (-55° to -32° C)

Cooling system (engine and oil)Fuel consumption

TM 5-5420-226-10

385 gal (1604.2 liters)17 gal (64.4 liters)17 gal (64.4 liters)11 qt (10.4 liters)145 gal (549 liters)

hydraulic-mechanical foot pedal

hydraulic-mechanical360-degree pivot

CD-850-6A, 2 speeds forward,1 reversemechanical, lever, 5 positions(P, N, L, H, R)

28.3 ft (8.64 m)37.0 ft (11.28 m)9.9 ft (3.0 m)12.7 ft (3.84 m)11.9 ft (3.65 m)13.2 ft (4 m)15 in. (38 cm)

AVDS-1790-2D or - 2DAV-12, turbosupercharged

2400 rpm2650 rpm700 to 750 rpmdiesel oil40 cetane, regular grade, DF-240 cetane, regular grade, DF-140 cetanej regular grade, DF-Aair-cooled1.13 gpm (gal per mile) (4.3 Lpm)

Change 2 1-9

TM 5-5420-226-10

PERFORMANCE DATA - Continued

Electrical System:InputBatteries, type

NumberCapacity

Charging system typeoutputRegulator

Land Performance:Speeds (maximum)

LowHighReverse

Towing speeds (maximum)Transmission connectedTransmission disconnected

Grade (maximum), transportingUphill or downhillSide slope

Grade (maximum), launching/retrieving

Uphill or downhillSide slope

Obstacle height vehicle willclimb (maximum)

ForwardDitch width vehicle will crossCenter of gravity (w/o bridge)

Lengthwise (from center ofdrive sprocket)

Height (above ground)Center of gravity (w/bridge)

Lengthwise (from center ofdrive sprocket)

Height (above ground)

24 vdc12 vdc, wet-cell6100 ampere-hoursgenerator300 amp (max)relay (electro-mechanical)

10 mph (16 kph)30 mph (48 kph)5 mph (8 kph)

3 mph (5 kph)12 mph (20 kph)

30%15%

15%8%

18 in. (46.2 cm)84 in. (214.8 cm)

130.25 in. (330.8 cm)

47.5 in. (120.7 cm)

116.5 in. (295.9 cm)

62 in. (157.5 cm)

TA106170

1-10

TM 5-5420-226-10

97,200 lb (48.6 tons)44,090kg (44.1 metric tons)126,700 lb (63.4 tons)47,471 kg (57.5 metric tons)

Gas-Particulate Filter Unit:Personnel protection 4 (or less) per unitType M8A3

TA271856

Change 1 1-11

TM 5-5420-226-10


TRANSPORTATION NAMEPLATE

TA106172

1-12

TM 5-5420-226-10


LAUNCHER NAMEPLATE

TA106173

1-13/(1-14 blank)

CHAPTER 2

Section I.

TM-5-5420-226-10

Control orKey Indicator Function

1. Tachometer Shows engine speed in revo-lutions per minute (rpm).

Hour Meter Registers total equivalentnumber of hour operatedfor 1 clock hour at 2,025rpm.

1.1 DUST DETECTOR Lights if engine dust de-WARNING LAMP tector switch has tripped.(If Equipped)

Change 2 2-1

TM 5-5420-226-10

OPERATOR’S CONTROLS AND INDICATORS - Continued

GENERAL

Con trol orKey indicator Function

2. POWERPLANT WARNING Lights if engine oil pres-Lamp sure, engine oil tempera-

ture, transmission oil tem-perature, or transmissionoil pressure are not normalor if engine dust detectorswitch has tripped (ifequipped).

3. Speedometer Shows speed in miles perhour (mph).

Odometer Shows distance traveled inmiles and tenths of a milefrom 0 to 99,999.9.

4. Steering Control Steers vehicle.

5. Brake Pressure Gage Shows hydraulic pressure inbrake line.

2-2 Change 2

TM 5-5420-226-10


6. Fixed Fire Extinguisher Discharges fixed fire extin-Controls guishers.

NOTEFixed fire extinguishersare used to put out firein the engine compart-ment.

7. Operator’s Bridge See page 2-12.Launching Controls

8. Accelerator Pedal Controls engine speed.

9. Brake Pedal Applies brakes to controland stop vehicle.

10. Dimmer Switch Selects either high or lowheadlight beam whenpressed and released.

11. Accelerator Locking Locks accelerator pedal inLever preset position.

TA106176

2-3

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OPPERATOR'S CONTROLS AND INDICATORS - Continued


12. Transmission Shift Controls transmission op-Lever crating range. Locks brakes

when in (P) park position.

13. Pump-Clutch Lever Controls hydraulic pump-clutch.

14. Manual Fuel Shutoff Controls fuel to engine.Handle

15. Manifold Heater Controls fuel and power toSwitch manifold heaters.

16. Purge Pump Control Forces air from engine fuelHandle system. Pumps fuel to mani-

fold heaters.

2-4

TA106177

TM 5-5420-226-10

OPERATOR'S CONTROLS AND INDICATORS - Continued


17. Indicator Panel Provides operator with op-erating controls and indi-cators. See page 2-13.

18. Master Control Panel Provides operator with op-erator’s controls and indi-cators. See page 2-15.

19. Intercom Control Panel Provides voice communica-tion selection and volumecontrol.

20. Pump-Clutch Assembly Provides power to hydraulicpump and pressure for hy-draulic system.

21. Operator’s Seat Controls position of oper-ator.

22. Height Adjustment Lever Releases seat for he ightadjustment. Locks seat atdesired height.

23. Seat Control Handle Releases seat for forward orrearward adjustment. Locksseat at desired position.

TA106178

2-5

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GENERAL


24. Escape Hatch Emergency exit from vehi-cle.

25. Escape Hatch Lever Releases escape hatch fromhull.

26. Engine Compartment Drain Controls engine compart-Valve Lever ment drain valve.

27. Crew Compartment Drain Controls crew compartmentValve Lever drain valve.

2-6

TM 5-5420-226-10


28. Domelight Switch Turns domelight on or off.Selects red or white light.

29. Rheostat Knob Controls brightness ofdomelight.

30. Utility Outlet Provides connection for 24vdc.

31. Ventilating Blower Switch Controls ventilating blower.

TA106180

2-7

TM 5-5420-226-10


GENERAL


32. Operator’s Heater Vent Directs air from personnelheater toward operator’sarea.

33. Commander’s Heater Vent Directs air from personnelheater toward commander’sare a.

34. Personnel Heater Provides heated air for ve-hicle.

35. Fire Extinguishers Contains chemicals (underpressure) for putting outf i res in engine compart -ment.

2-8

TA106181

TM 5-5420-226-10


CUPOLA COVER (Same for operator and commander)


1. Periscope Door Assembly Supports opera tor’s peri-scope. See page 2-18.

2. Cupola Cover Covers hatch opening.

3. Cover Handles Secures cover when closed.

4 . Release Knob Releases safety latch whenpushed.

5. Safety Latch Holds cover when open.

TA106182

2-9

TM 5-5420-226-10


M24 PERISCOPE (IF EQUIPPED)

Control orKey Indicator Funct ion

1. M24 Infrared (IR) Periscope Used when driving at nightunder IR conditions.

2. Periscope Mount Holds periscope in operatingposition.

3. Elevation Clamp Clamps periscope at eleva-tion setting.

4. Elevation Lever Adjusts periscope elevation.

5. Headrest Adjusts to user’s needs.

6. Eyepieces Provide vision through peri-scope.

7. Right FOCUS Knob * Focuses right eyepiece.

*Dust covers shown in place.

2-10 Change 2

TM 5-5420-226-10


8.

M24 PERISCOPE (IF EQUIPPED) - Continued


Power Receptacle* For connecting high voltagepower cable to periscope.

9. Left Focus Knob* Focuses left eyepiece.

10. Power Cable Provides high voltage toperiscope.

11. Power Cable Stowage Connector Provides connection forpower cable when not con-netted to periscope.

*Dust covers shown in place.

Change 2 2-11

TM 5-5420-226-10


NIGHT VIEWER (IF EQUIPPED)


1. AN/VVS-2 Night Vision Used when driving at nightViewer under blackout conditions.

2-12 Change 2

TM 5-5420-226-10


BRIDGE LAUNCHING CONTROLS


1. EJECT Lever Controls ejection cylinders.

2. LOCK Lever Controls locking cylinder.

3. SCISSORS Lever Controls bridge scissors cyl-inder.

4. TONGUE Lever Controls tongue.

5. OVERHEAD Lever Controls overhead and hold-down cylinders.

(2-12.1 blank)/2-12.2 Change 2

TM 5-5420-226-10


Control orKey Indicator Funct ion

ENGINE Oil Pressure Shows operating pressure.Green - normal, red - low.

2. Battery-Generator Engine off - shows conditionof batteries. Engine running- shows rate of charge.

3. TRANSMISSION Oil Shows operating pressure.Pressure Green - normal, red - low.

4 . Panel Lamps Light panel.

TA106186

2-13

TM 5-5420-226-10


5. TRANSMISSION Oil Shows operating tempera-Temperature ture. Green - normal, red -

high.

6. FUEL TANKS Selector Connects fuel level indica-Switch tor to either fuel tank (L or

R).

7. Fuel LEVEL Gage Indicates fuel level in tankselected.

8. ENGINE Oil Temperature Shows operating tempera-ture. Green - normal, red -high.

TA106187

2-14

TM 5-5420-226-10



1. FUEL PUMPS Switch Controls in-vehicle fuelpumps.

2. MASTER BATTERY Switch Controls power to vehicleelectrical system.

3. ENGINE FUEL SHUTOFF Controls engine fuel.Switch

4 . MASTER BATTERY Lights when MASTERIndicator BATTERY switch is on.

5. STARTER Switch Controls engine starter.

6. SMOKE GENERATOR Lights when SMOKE GEN-Indicator ERATO R is on.

7. SMOKE GENERATOR Controls power to SMOKESwitch GENERATOR system.

TA106188

2-15

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MASTER CONTROL PANEL - Continued


8. UTILITY OUTLET Provides 24 vdc power foraccessories.

9. BO SELECTOR Switch Selects either infrared (IR)headlights or blackout (BO)drive lights.

10. NIGHT VISION Switch Controls infrared periscopepower.

11. NIGHT VISION Indicator Lights when NIGHT VISIONis on.

12. HI BEAM Indicator Lights when headlights areon high beam.

13. LIGHTING CONTROL Switch Controls outside lights andpanel lights.

2-16

TM 5-5420-226-10


14. GAS-PARTICULATE Indicator Lights when gas-particulateswitch is on.

15. BILGE PUMP Indicator Not used.

16. GAS-PARTICULATE Switch Controls gas-particulate fil-ter unit power.

17. BILGE PUMP Switch Not used.

18. PERSONNEL HEATER Indicator Lights when heater is run-ning in ON-HI or ON-LO, orheater is purging in OFFposition.

19. PERSONNEL HEATER Switch Controls heater power andprovides temperature con-trol.

20. HEATER MASTER Switch Controls power to PERSON-NEL HEATER switch.

TA106190

2-17

TM 5-5420-266-10


1. Lid Covers periscope opening(spring-loaded to open posi-tion).

2. Locking Handle Locks periscope in place.

3. Lid Handle Provides lid grip.

4. Locking Latch Locks lid in closed position.

TA106191

2-18

TM 5-5420-226-10


1. Dipstick Shows hydraulic fluid levelin reservoir.

TA106192

2-19

TM 5-5420-226-10


HYDRAULIC RESERVOIR FILTER


1. Reservoir Filter Cleans hydraulic fluid pass-ing from reservoir to hy-draulic system.

2. Filter Indicator Shows if filter is clean,needs cleaning, or is by-passed.

TA106193

2-20

TM 5-5420-226-10


SMOKE GRENADE LAUNCHER CONTROLS

SMOKE GRENADE LAUNCHER CONTROLS


1. Pushbutton Unit Controls firing of left and rightdischargers when grenadelauncher system power is on.

2. POWER Switch Controls power to smokegrenade launcher system.

3. POWER Lamp Lights when smoke grenadelauncher system power is on.

Change 6 2-20.1/(2-20.2 blank)

TM 5-5420-226-10

SECTION Il. PREVENTIVE MAINTENANCECHECKS AND SERVICES (PMCS)

GENERAL

Preventive Maintenance Checks and Services (PMCS) means systematic caring, in-specting, and servicing of equipment to keep it in good condition and to preventbreakdowns.

Be sure to perform your PMCS each time you operate the vehicle. Always do yourPMCS in the same order, so it gets to be a habit. Once you have some practice,you will quickly spot anything wrong.

PMCS PROCEDURES

Explanation of Columns.

Column 1 - Item No. Provides the sequence in which the PMCS procedures are tobe performed. Use this item number on DA Form 2404 to identify the area whereyou found something wrong and notify organizational maintenance.

Column 2 - Interval. Identifies when the PMCS procedures are to be performed.

Before you begin operating the vehicle, do the Before interval procedures.

While operating the vehicle, do the During interval procedures.

After operating the vehicle, do the After interval procedures.

Once a week do the Weekly interval procedures. If the vehicle has not beenoperated in the last week, also do the Before interval procedures at the sametime.

Once a month do the Monthly interval procedures. If the vehicle has not beenoperated in the last month, also do the After interval procedures at the sametime.

If you are operating the vehicle for the first time, do the Weekly and Monthlyinterval procedures the first time you do the Before interval procedures.

Column 3- Location-Item to Check/Service. Identifies the vehicle component loca-tion where the procedure is to be performed.

Column 4 - Crewmember/Procedure. Identifies who will perform the procedure andprovides instructions required to determine mission capability of the vehicle.

Column 5 - Not Fully Mission Capable If: Identifies vehicle conditions that willprevent the vehicle from performing a mission. Vehicles with any of the conditionsidentified must be reported as not available and not mission capable.

Change 8 2-21

TM 5-5420-226-10

PREVENTIVE MAINTENANCE CHECKS AND SERVICES - Continued

SPECIAL INFORMATION

The following paragraphs provide information and general guidelines necessary forthe successful completion of PMCS.

General

If you find something wrong when performing PMCS, fix it if you can, usingChapter 3 troubleshooting and maintenance procedures.

Pay attention to WARNING and CAUTION statements. A WARNING means someonecould be hurt. A CAUTION means equipment could be damaged.

If tools required to perform PMCS are not listed in Appendix B, notify organization-al maintenance.

Leakage Definitions

It is necessary to know how fluid leakage affects the status of the vehicle. Thefollowing are definitions of the classes of leakage an operator or crewmemberneeds to know to be able to determine the condition of a leak. Learn, then befamiliar with them, and REMEMBER - WHEN IN DOUBT, ASK YOUR SUPERVISOR.

Leakage Definitions for Crew/Operator PMCS

CLASS I Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.

CLASS II Leakage of fluid great enough to form drops but not enough to causedrops to drip from item being checked.

CLASS Ill Leakage of fluid great enough to form drops that fall from the item beingchecked.

CAUTION

. Equipment operation is allowable with minor leakages (Class I orII) except for fuel leaks. Of course, consideration must be givento the fluid capacity of the item or system being checked. Whenin doubt, ask your supervisor.

. When operating with Class I or II leaks, continue to check fluidlevels as required in your PMCS.

. Class Ill leaks should be reported on DA Form 2404 forcorrective action by organizational maintenance.

2-22 Change 8

PREVENTIVE MAINTENANCE

Inspection

TM 5-5420-226-10

CHECKS AND SERVICES - Continued

Look for any sign of a problem or trouble. Senses help here. You can feel, smell,hear, or see many problems. Be alert when on the vehicle.

Inspect to see if items are in good condition and are correctly assembled, stowed,and secured. Inspect to see if items are excessively worn, leaking, corroded, orproperly lubricated. Correct any problems found or notify organizational mainte-nance.

There are some common items to check all over the vehicle. These include thefollowing:

Bolts, clamps, nuts, and screws:

Continuously check for looseness. Look for chipped paint, bare metal, rust,or corrosion around bolt and screw heads and nuts. Tighten them whenyou find them loose. If tools are not available, notify organizational mainte-nance.

Cleaning and Lubrication

WARNING

Dry Cleaning Solvent P-D-680 is toxic and flammable. To avoidinjury, wear protective goggles and gloves and use in a well-ventilated area. Avoid contact with skin, eyes, and clothes, and donot breathe vapors. Do not use near open fire or excessive heat. Theflash point for Type I Dry Cleaning Solvent is 100°F (38°C), and forType II is 140°F (60°C). If you become dizzy while using DryCleaning Solvent, get fresh air immediately and get medical aid. Ifcontact with eyes is made, wash your eyes with water and getmedical aid immediately.

Use dry cleaning solvent (item 32, Appendix D) to clean grease or oil from allmetal parts.

Do not use material coarser than crocus cloth (item 11, Appendix D) to removerust from metal surfaces.

After cleaning, coat unprotected metal surfaces with CLP (item 7.1, Appendix D).

Clean all optical lenses with lens cleaning compound (item 12, Appendix D).

Change 8 2-23

TM 5-5420-226-10

PREVENTIVE MAINTENANCE CHECKS AND SERVICES - Continued

W A R N I N G

Compressed air used for cleaning purposes will not exceed 30 psi.Use only with effective chip-guarding and personal protectiveequipment (goggles/faceshield, gloves, etc.).

The outside of the vehicle may be cleaned using steam, water, or air under pres-sure if the following precautions are observed:

a.

b.

c.

d.

e.

f.

g.

Open drain valve. If drain valve is clogged, notify organizational mainte-nance.

Close all open hatches, grilles, and access doors.

Install exhaust and intake plugs on personnel heater to keep water fromentering heater. Remove plugs after washing vehicle.

Do not direct steam, water, or air under pressure directly into top deckgrille and air intake openings. Hydraulic and electrical fitting lines could bedamaged.

Do not direct steam, water, or air under pressure directly at any periscopeseal.

Do not direct steam or water under pressure directly into rear grille doors.Water may enter engine exhaust system and could damage engine.

Do not point steam or water under pressure at roadwheel hub caps ifwithin 5 feet (1.5 meters). Water could be forced into the hub and conta-minate the oil.

Inspect all external and internal parts and surfaces for corrosion. If corrosion isfound, notify organizational maintenance.

LO 5-5420-226-12, M48A5 AVLB lubrication order, has been rescinded. All crewlubrication tasks have been incorporated into Appendix F and PMCS contained inthis manual. They are to be performed as required or as a part of crew PMCS.Any reference to LO 5-5420-226-12 must be considered a reference to AppendixF, the crew PMCS, or organizational PMCS, and must be performed in accordancewith instructions provided in the procedures.

2-24 Change 8

TM 5-5420-226-10

DAILY “WALK AROUND” PMCS PROCEDURES

These routing diagrams will help you perform your Before, During, and AfterPMCS. Shown are the locations where you will perform various PMCS items. Thelocations are identified by the related PMCS item numbers. Before PMCS mustinclude a walk around with checks for fluid leaks, obvious damage, tampering andmissing parts.

Change 8 2-25

TM 5-5420-226-10

Preventive Maintenance Checks and Services (PMCS) for M48A5 AVLB

ItemNo.

1

2

3

Location

Interval Item to Crewmember Not Fully MissionCheck/ Procedure Capable if:Service

Before

Before

Before

Driver

Fire Extin-guisherHandles(External)

Make sure safety wire/leadseals on fire extinguisherexternal release handles arenot missing or broken.

Safety wire/lead sealbroken or missing.

GrenadeLauncherDischarg-ers

HydraulicFluidLeaks(External)

If firing is anticipated, wipeall surfaces dry (page F-3).

Visually inspect for evidenceof hydraulic fluid leaks inthe following areas: over-head cylinder, tongue cylin-der, locking cylinder, ejec-tion cylinder, and holddowncylinder cover.

Any Class Ill leak.

2-26 Change 8

TM 5-5420-226-10

Preventive Maintanance Checks and Services (PMCS) for M48A5 AVLB

Change 8 2-27

TM 5-5420-226-10


2-28 Change 8

TM 5-5420-226-10


Change 8 2-29

TM 5-5420-226-10


ItemNo.

7

Interval

Before

Location

Item toCheck/Service

Operator’sSeat (Ad-justments)

2-30 Change 8

CrewmemberProcedure

Adjust operator’s seat upand down (height adjustmentlever), forward and backward(seat control handle).

Check that seat movessmoothly and locks indesired position.

Not Fully MissionCapable if:

Operator’s seat ismissing or broken(includes seat back).

Operators seat willnot adjust.

TM 5-5420-226-10


Change 8 2-31

TM 5-5420-226-10


2-32 Change 8

TM 5-5420-226-10


Change 8 2-33

TM 5-5420-226-10


2-34 Change 8

TM 5-5420-226-10


Change 8 2-35

TM 5-5420-226-10


2-36 Change 8

TM 5-5420-226-10


Change 8 2-37

TM 5-5420-226-10


2-38 Change 8

TM 5-5420-226-10


Change 8 2-39

TM 5-5420-226-10


2-40 Change 8

TM 5-5420-226-10


Change 8 2-41

TM 5-5420-226-10


2-42 Change 8

TM 5-5420-226-10


Change 8 2-43

TM 5-5420-226-10


2-44 Change 8

TM 5-5420-226-10

Preventive Maintenance Checks end Services (PMCS) for M48A5 AVLB

ItemNo.

20

21

Interval

Location


Before IntercomSetC-2298(Operatorand Com-mander)

CrewmemberProcedure

Turn amplifier AM 1780VRC on.

Talk to commander: moveMONITOR switch to INTONLY and adjust VOLUMEcontrol to desired level.

Check intercom operation.

Check radio set operation.For procedures seeTM 11-5820-401-10-2 orTM 11-5820-498-12.


Operator cannot talkwith commander.

Radio will not tran-smit or receive.

Before AN/VVS-2(Night Night Vi-Opera- sion View-tions) er and

Hatch

CAUTION

Perform AN/VVS-2 night vision check during darkness only. Do notexpose objective lens on night vision viewer to direct sunlight orbright light.

If operating at night, installand operate night visionviewer (page 3-50).

Night vision vieweris inoperative.

Change 8 2-45

TM 5-5420-226-10


2-46 Change 8

TM 5-5420-226-10


Change 8 2-47

TM 5-5420-226-10


2-48 Change 8

TM 5-5420-226-10


Change 8 2-49

TM 5-5420-226-10


2-50 Change 8

TM 5-5420-226-10


Change 8 2-51

TM 5-5420-226-10


2-52 Change 8

TM 5-5420-226-10


Change 8 2-53

TM 5-5420-226-10


2-54 Change 8

TM 5-5420-226-10

Preventive Maintenance Checks and Services (PMCS) for MA8A5 AVLB

ItemNo.

37

Interval

After

Location

Item to Not Fully MissionCheck/ Capable if:Service

Reservoir Launch bridge to standing

IAir “A” position- (page 2-111).Breather

NOTE

After operation PMCS tasks are easier to perform with the bridge inthe standing "A" position.

Check that reservoir airbreather is not damaged ormissing.

Change 8 2-55

TM 5-5420-226-10


ItemNo.

38

Location

Interval Item to Not Fully MissionCheck/ Capable if:Service

After HydraulicReservoirFluid andFluidStrainer

WARNING

2-56 Change 8

TM 5-5420-226-10


ItemNo.

38

Not Fully MissionCapable if

WARNING

Dry Cleaning Solvent P-D-680 is toxic and flammable. To avoidinjury, wear protective goggles and gloves and use in a well-ventilated area. Avoid contact with skin, eyes, and clothes, and donot breathe vapors. Do not use near open fire or excessive heat. Theflash point for Type I Dry Cleaning Solvent is 100°F (38°C), and forType II is 140°F (60°C). If you become dizzy while using DryCleaning Solvent, get fresh air immediately and get medical aid. Ifcontact with ayes is made, wash your eyes with water and getmedical aid immediately.

Check for and remove anydirt and debris from fluidstrainer. If required cleanfluid strainer in dry cleaningsolvent (item 32, AppendixD), and dry by shaking. Ap-ply FRH oil (item 14, Appen-dix D) to fluid strainer. Donot use OE/HDO. Install fluidstrainer.

Change 8 2-57

TM 5-5420-226-10


38

39

2-58

Location

Interval Item to Not Fully MissionCheck/ Capeble ifService

After HydraulicReservoirFluid andFluidStrainer(Cont)

Wipe dipstick, and insert ful-ly into filler neck.

Remove dipstick and checkthat fluid level is at orslightly above FULL mark. Iffluid is below FULL mark,add fluid as required (pageF-4).

After

Change 8

Check engine and transmis-sion oil levels (page F-4).

TM 5-5420-226-10


40

41

Interval

After

Location


Top DeckGrilleDoors(Left andRight)

Check that all doors are pre-sent.

Lift open grille doors start-ing at rear.

Look for missing engine heatshroud hardware on grilledoors and hinges.


Any top grille doormissing.

Engine heat shroudmissing.

After MineClearingLineCharge(MICLIC)SupportBracket (IfEquipped)

Check that MICLIC supportbracket is not damaged.

Check that MICLIC mountingbrackets are not damagedand mounting screws andnuts are not loose or miss-ing.

Change 8 2-59

TM 5-5420-226-10

ItemNo.

42


Interval

After

Location


Air Clean-er Elbows,

Check that air cleaner intakehoses and outlet hoses arenot cracked, damaged ormissing.

Check that intake hose el-bows and outlet hose el-bows are not loose, dam-aged, or missing.

Check that intake and outlethose clamps (two on eachhose) are not loose, broken,or missing.


Intake or outlet hosedamaged or missing.

Elbows loose ordamaged.

2-60 Change 8

TM 5-5420-226-10


ItemNo.

43

Interval

After

Location


Check dust detector pressureswitch for security of mount-ing.

Check dust detector pressureswitch to insure that switchhas not been tripped (redplunger visible through plas-tic cover).

Check that wiring harness isconnected.

Check that hoses are notdamaged or missing.

Check that fittings are se-cure.


Dust detector switchis tripped.

Change 8 2-61

TM 5-5420-226-10

ItemNo.

44

45


Interval

After

Location


Engine Oiland Trans-missionOil Cool-ers, (Rightand LeftSides)

Check screens on engine oiland transmission oil coolersfor debris.

Check coolers for damageand check for leaks.


Damage to oil cool-ers or oil lines thatrestricts oil flow.class III oil leak inoil cooler or lines.

2-62 Change 8

TM 5-5420-226-10


ItemNo.

46

47

48

After

After

Make sure grille doors aresecure.

Check for loose or missinghardware.

Be sure doors are not dam-aged or missing.

Check for Class Ill oil leak-age between final drive andbottom of sprocket. Reportclass Ill fluid leakage to or-ganizational maintenance.

Check for shearedstuds.

WARNING

mounting


Rear grille door miss-ing or can not besecured.

Any Class Ill fluidleak.

More than two finaldrive hub studssheared on any onefinal drive

Change 8 2-63

TM 5-5420-226-10


ItemNo.

49

Interval

After

Location


TorsionBars forRoad-wheelsNo. 1 and6 (Rightand Left

Look at roadwheels No. 1and 6 to see if torsion barsare broken or missing.

If volute bumper springbracket is clearly visibleabove top of roadwheel andextended shock absorbersleeve is clearly visibleabove top of roadwheel, tor-sion bar is operational.

If volute bumper springbracket is barely visibleabove top of roadwheel andcompressed shock absorbersleeve is barely visible ornot visible above top ofroadwheel, torsion bar isbroken.


Torsion bars at road-wheels No. 1 and/or6 broken or missing.

2-64 Change 8

TM 5-5420-226-10

wheelsand Hubs(Right andLeft Sides)


Check inner and outer androadwheels for chunking orseparated rubber that wouldcause thumping during use.

Check for worn mountingholes by looking for a shinyarea around mounting nutsand washers.

WARNING

Roadwheel or compensating idler wheel hubs may be extremely hotand could cause burns.

Cautiously check hubs forhigh temperature differencesbetween hubs.

Check inside rim for greasespattering. Spattering greaseindicates a defective seal.

Check for missing road-wheels or compensatingidler wheels.

INNER

ROADWHEELOUTERROADWHEEL

Any hub that is over-heated and cannotbe corrected by lu-brication.

One or more roadwheels missing orunserviceable.

INNERROADWHEEL

HUB

INSIDE RIM

WASHER

Change 8 2-65

TM 5-5420-226-10

51

52

Preventive Maintenence Checks and Services (PMCS) for M48A5 AVLB

After

After

Road-wheelArms(Right andLeft Sides)

Shock Ab-sorbers(Right andLeft Sides)

Be sure that roadwheel armsare not bent, broken, ormissing.


Check shock absorbers forbroken or missingclips/springs and for signsof oil leakage.

Shock absorber atNo. 1 or No. 6 road-wheel broken ormissing.

2-66 Change 8

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Change 8 2-67

TM 5-5420-226-10

2-68 Change 8

TM 5-5420-226-10


ItemNo.

54

Interval

After

Location


Track, EndConnec-tors andWedges,CenterGuides,TrackLinks, andTrackPads (Leftand RightSides)(Cont)

4. Ground guides direct driv-er to move-vehicle in re-verse at creeping speed.

5. Front crewmember checktrack, as it passes over com-pensating idler wheel. As de-fects are found, alert frontground guide to signal driverto stop vehicle. Mark out-board end connector wheredefect is located and correc-tive action is required. Checktrack for the following:

Missing, bent, cracked, bro-ken, or shiny (loose) centerguides.

Shiny metal on center guidearound mounting bolt (indi-cates loose center guide).


I One or more miss-ing/broken centerguides.

Change 8 2-69

TM 5-5420-226-10


ItemNo.

54

Location

Interval Item toCheck/Service

After Track, EndConnec-tors andWedges,CenterGuides,TrackLinks, andTrackPads (Leftand RightSides)(Cont)


Missing or loose trackpads/links.

Excessive wear of trackpads/links (indicated bydamage to roadway).

Broken, missing, or loose(shiny metal around wedgebolt) end connectors.

Missing or improperly seatedwedges.

Missing or broken wedgesand bolts.

One or more brokenor missing end con-nectors.

One or more bro-ken/missing wedges.

2-70 Change 8

TM 5-5420-226-10


ItemNo.

54

Interval

After

Location



NOTE


When track link appears out of line, it indicates a dead link ordamaged track pin bushing.

6. Look for dead links be-tween track support

7.Check track linksbreaks or cracks.

rollers.

for

8. After left track has beenchecked and marked, checkright track using same pro-cedures. After both tracksare checked and marked, goto applicable corrective pro-cedure.

On one side of vehi-cle, three or moredead track links orone broken tracklink.

Change 8 2-71

TM 5-5420-226-10


ItemNo.

Interval

After

Location




If end connector is loose orunseated perform the follow-ing:

1. Loosen track tension(page 3-23).

2. Loosen center guide nut(left side) on same link thathas loose end connector.

3. Move vehicle until looseend connector is midwayover compensating idlerwheel then stop vehicle.

2-72 Change 8

TM 5-5420-226-10


ItemNo.

54

Intervel

After

Location



4. Check that wedge is innormal position and doesnot touch radius. If wedgetouches inner or outer radi-us, reposition end connector(in or out) on pins to proper-ly seat wedge.

5. Tighten both inboard andout board end connectorbolts.

6. Tighten centerguide nut.

If end connector is dam-aged, replace connector(page 3-25).


Change 8 2-73

TM 5-5420-226-10


ItemNo.

54

Interval

After

Location



If center guide is loose, per-form the following:

1. Move vehicle until defec-tive or loose center guide isbetween compensating idlerwheel and No. 1 roadwheel.

2. Tighten loose centerguide nut. (For reference,proper torque is 360 to 380Ib-ft (488.2 to 515.3 N•m).

If center guide is damaged,replace center guide (page3-31).


2-74 Change 8

TM 5-5420-226-10


ItemN0.

54

Interval

Location


After Track, EndConnec-tors andWedges,CenterGuides,TrackLinks, andTrackPads (Leftand RightSides)(Cont)

If track pads are loose, per-form the following:

1. Move vehicle until loosetrack pad is between com-pensating idler wheel andNo. 1 roadwheel.2. Stop vehicle and tightentrack pad nut.

If track pads are damagedor excessively worn, replacepad (page 3-32).

If track links or pins aredamaged, replace track link(page 3-29).

NOTE

Track tension must be adjusted and is accomplished in Item 56.

Change 8 2-75

TM 5-5420-226-10


ItemNo.

55

56

After

Location

Item toCheck/Services

Track Ad-justingLink (Leftand RightSides)


Check that link assembly is Track adjusting linknot missing or broken. broken or missing.

Check that cotter pinis not missing or

(page 3-23).

2-76 Change 8

TM 5-5420-226-10

Preventive Maintenance Checks and Services (PMCS) for M48A5 AVL8

57

lnterval

After Cylinder,Pins, andRetainingRings (Leftand RightSides)

Check that pins or retainingrings are not missing onboom, tongue, tongue cylinder and overhead cylinder.


Any pins or retainingrings missing.

Change 8 2-77

TM 5-5420-226-10

ItemNo.

58


Interval

Weekly

Location


BatteriesLeft andRightSides)

Remove battery retainer(page 3-40). Remove cover.

Visually check for broken orloose battery connectors andposts.

Check for corrosion on bat-tery connectors and posts.

Wipe connectors and postswith clean cloth, and applylight coat of GAA grease(item 15, Appendix D).

Check battery casings forcracks.


One or moreunserviceable battery.

2-78 Change 8

TM 5-5420-226-10


ItemNo.

58

Interval

Weekly

Location

Item to Not Fully MissionCheck/ Capable ifServices

Batteries(Left andRightSides)(Cont)

Change 8 2-79

TM 5-5420-226-10


ItemNo.

59

Interval

Weekly

Location


EngineManualFuel Shut-off

With engine running, releaselatch and pull manual FUELSHUT-OFF handle.

Check that engine stopswithin 30 seconds.

Push manual FUEL SHUT-OFF handle in and securewith latch.


Engine does not shutdown.

2-80 Change 8

TM 5-5420-226-10


Location

lntervaI Item to Not Fully MissionCheck/ Capable if:

Service

WARNING

If NBC exposure is suspected, air filter media must be handled bypersonnel wearing protective equipment. Contact your unit NBCOfficer or NBC NCO for appropriate handling or disposal instruc-tions.

Visually inspect filter unit fordamage.

Pull and lift spring clip fromair intake openings on filterunit.

Set MASTER BATTERYswitch and GAS PARTICU-LATE switch to ON.

Change 8 2-81

TM 5-5420-226-10

ItemNo.


60

Interval

Weekly

Location


Gas Par-ticulateSystem(Cent)

Pull hose outlet from clip atboth crewmember stations.

Check for steady flow of airat hose outlet at both crew-member stations.


NOTE

If air flow is blocked at either hose outlet, use personnel gas mask.

Push hose outlet into clip atboth crewmember stations.

Set GAS PARTICULATEswitch to OFF.

Press spring clip on filterunit down to cover air in-take opening.

Set MASTER BATTERYswitch to OFF.

2-82 Change 8

TM 5-5420-226-10


Interval

Weekly

Location


BO Mark-er andServiceDriveHeadlights

Station crewmember in frontof vehicle to verify headlightchecks.

Set MASTER BATTERYswitch to ON.

Place LIGHTING CONTROLlever to BO MARKER.

Check that blackout markerlamps light.

Set BO SELECTOR switch toBLACKOUT DRIVE.

Check that blackout drivelamp lights.


Change 8 2-82.1

TM 5-5420-226-10


Interval

Weekly

Location


BO Mark-er andServiceDriveHeadlights

Place LIGHTING CONTROLlever to SER DRIVE.

Check that high and lowbeams light by pressing andreleasing DIMMER SWITCH.

Be sure HI BEAM indicatorlights when high beam ser-vice drive lights are lit.


2-82.2 Change 8

TM 5-5420-226-10


lnterval

Weekly

Check that service drive tail-light lights.

Press brake pedal. Checkthat service drive stoplightlights.

Turn LIGHTING CONTROL le-ver to STOPLIGHT.

Press brake pedal. Checkthat service drive stoplightlights.

Turn LIGHTING CONTROL le-ver to BO MARKER.

Check that blackout markerslight.

Press brake pedal. Checkthat blackout drive stoplightlights.


Change 8 2-82.3

TM 5-5420-226-10

Preventive Maintenence Checks and Services (PMCS) for M48A5 AVLB

Station crewmember at rearof vehicle to verify taillightand stoplight checks.

Turn LIGHTING CONTROL le-ver to BO DRIVE.

Check that blackout drivetaillights light.

Press brake pedal.

Check that blackout stoplightlights.

Turn LIGHTING CONTROL le-ver to OFF.



2-82.4 Change 8

TM 5-5420-226-10

Preventive Maintenence Checks end Services (PMCS) for M48A5 AVLB

63

65

Location

Interval Item toCheck/

I Service I

Meekly Track Check sprocket for wear byDrive looking at undercut locatedSprocket on two sprocket teeth.(Right and Check that undercut areaLeft Sides) has not been worn away.

Weekly


Undercut is com-pletely worn away.

CAUTION

Perform AN/VVS-2 night vision check during darkness only. Do notexpose objective lens on night vision viewer to direct sunlight orbright light.

Install and operate night vi-sion viewer (page 3-50).

Night vision vieweris inoperative.

Change 8 2-82.5

TM 5-5420-226-10


ItemNo.

65

67

Interval

Weekly

Location


PortableFire Extin-guisher

Check that extinguisherclamp is secure.

Check that safety wire/leadseal has not been broken.


Monthly ExercisingHydraulicSystem

WARNING

FRH hydraulic fluid may contain tricresyl phosphate which, if takeninternally, can produce paralysis. Hydraulic fluid may be absorbedthrough the skin. Wear long sleeves, gloves, goggles, and face-shield. If FRH gets in eyes, wash them, and get medical aidimmediately. If FRH gets on skin, thoroughly wash with soap andwater. Wash hands thoroughly prior to eating or smoking. Applica-tion of these measures is considered an effective control of thehazard.

2-82.6 Change 8

TM 5-5420-226-10


ItemNo.

Interval

Monthly

Location



Hydraulic -

System(Cont)

WARNING

Dry Cleaning Solvent P-D-680 is toxic and flammable. To avoidinjury, wear protective goggles and gloves and use in a well-ventilated area. Avoid contact with skin, eyes, and clothes, and donot breathe vapors. Do not use near open fire or excessive heat. Theflash point for Type I Dry Cleaning Solvent is 100°F (38°C) and forType II is 140°F (60°C). If you become dizzy while using DryCleaning Solvent, get fresh air immediately and get medical aid. Ifcontact with eyes is made, wash your eves with water and getmedical aid immediately.

Remove nut, washer, andnameplate securing hydraulicbreather filter hood and re-move hood. Remove filter el-ement and clean with drycleaning solvent (item 32,Appendix D). Dip filter ele-ment in hydraulic fluid andinstall on body assembly. Po-sition hood on filter elementand secure with nameplate,washer, and nut.

Change 8 2-82.7

TM 5-5420-226-10


ItemNo.

66

Interval

Monthly

Location


ExercisingHydraulicSystem(Cont)

Check bridge for serviceabili-ty (TM 5-5420-203-14).

Perform launch and retrievalprocedures (page 2-111 and2-119 respectively) at leastfive times.

NOTE


Bridge is unservice-able or missing.

Vehicle fails to com-plete launch or re-trieval.

One pint of oil loss per operational hour is acceptable

Any Class Ill leak.

2-82.8 Change 8

TM 5-5420-226-10


lnterval

Location


BridgeSeat andPads

loose pad mounting screws,and loose bridge mountingscrews.

Check for torn or missingpads.

Check brake master cylinderfluid level (page F-8).

Brake system leaks.

Change 8 2-82.9

TM 5-5420-226-10


Location

Interval Item to Not Fully MissionCheck/ Capable if:Service

Monthly GrenadeLauncherPowerBox

Ensure grenades areinjury by accidental

WARNING

not present in grenade dischargers to preventdischarging of grenades.

Make sure MASTER BAT-TERY switch is set to ON.

Set grenade POWER switchto ON.

Check that POWER lamplights.

Set POWER switch to OFF.


2-82.10 Change 8

TM 5-5420-226-10


Change 8 2-82.11/(2-82.12 blank)

Section III.

page 3-1

TM 5-5420-226-10

1.

2.

3.

4 .

5.

Using key, open padlock (1).

Remove padlock (1).

Pull up cover handle (2).

Swing cover (3) to rear.

Lock cover (3) open with safetylatch (4).

2.

3.

4.

5.

Push in knob (5) to releasesafety latch (4).

Swing cover (3) forward.

Push cover down on cupola (6).

Push cover handle (2) down tolock position.

Lock with padlock (1). TA106256

2-83

TM 5-5420-226-10

ADJUST SEAT

UP OR DOWN

1. Sit in seat (1).

2. Lift up and hold height adjust-ment lever (2).

3. Raise or lower seat to positionyou want.

4. Let go of lever (2).

FORWARD OR BACKWARD

1.

2.

3.

4.

Sit in seat (1).

P u l l a n d h o l d s e a t c o n t r o lhandle (3) toward seat.

Move seat forward or backwardto position you want.

Let go of handle (3).

2-84

TM 5-5420-226-10

OPERATE FIXED FIRE EXTINGUISHERS

1. Stop vehicle.

2. Quickly pull handle (1) hard andlet go.

NOTE

Pulling handle releases 1stshot and shuts off enginefuel.

2.1. If engine continues to run, pull upon fuel shut off handle (2).

3. If fire is not out in 20 seconds:

a. Push handle (1) in.

b. Pull hard on handle (1) andlet go.

NOTEPulling handle releases2nd shot.

4. If both shots are released getout of vehicle and moveupwind from vehicle.

IF 1ST OR 2ND SHOT DID NOTRELEASE:

1. a. Push up and hold ENGINEFUEL SHUT OFF switch (3)for 6 to 10 seconds, or,

b. Pull up on fuel shut offhandle (2).

Change 6 2-85

TM 5-5420-226-10

OPERATE FIXED FIRE EXTINGUISHERS - Continued

2. Get out of vehicle.

3.

4.

5.

6.

7.

Go to left front of vehicle.

PULL 1ST SHOT handle (4).

After about 20 seconds, pull2ND SHOT handle (5).

Tell organizational maintenance you’ve had a fire and used the fireextinguishers.

CAUTION

Do not try to start engine untilrepairs are made and fireextinguishers are replaced toprevent recurrence of fire.

OPERATE SERVICE DRIVELIGHTS

ON

1. MASTER BATTERY switch(1) must be ON.

2. Raise and hold UNLOCKlever (2).

3. Turn lever (3) to SER DRIVE.

4. Release UNLOCK lever (2).

2-86

TM 5-5420-226-10

5. P r e s s a n d release dimmerswitch (5) to select high or lowbeam.

OFF

Turn lever (3) to OFF.

OPERATE SERVICE STOPLIGHT

ON

1. Raise and hold UNLOCK lever(1).

2. Move lever (2) to STOPLIGHT.


4. Press brake pedal to operatestoplight.

OFF

To turn off stoplight, move lever(2) to OFF.

TA106260

2-87

TM 5-5420-226-10

OPERATE BLACKOUT MARKERLIGHTS

ON

1. Move lever (1) to BO MARKER.

2. Press brake pedal to operateblackout stoplight.

OFF

To turn off lights, move lever (1)to OFF.

OPERATE BLACKOUT DRIVE LIGHTS

1. Set BO SELECTOR switch (1) to BLACKOUT DRIVE.

2. Raise and hold UNLOCK lever

3. Move lever (3) to BO DRIVE.


(2).

5. Press brake pedal to operate blackout stoplight.

OFF

To turn off lights, move lever (3) to OFF.

TA106261

2-88

2.

3.

4 .

5.

TM 5-5420-226-10

Set BO SELECTOR switch (1)to IR.

Raise and hold UNLOCK lever(2).

Move lever (3) to BO DRIVE.

Release UNLOCK lever (2).

Set NIGHT VISION switch (4) to

6.

7.

8.

9.

OFF1. To turn off lights, move lever (3) to OFF.

Check IR by placing hand on lens. You will feel heat if lights areoperating.

HI BEAM indicator (5) will light if lights are on high beam.

Press and release dimmer switch (6) to select high or low beam.

Press brake pedal (7) to operate blackout stoplight.

2. Move NIGHT VISION switch (4) to OFF.

3. Set BO SELECTOR switch (1) to BLACKOUT DRIVE

TA106262

2-89

TM 5-5420-226-10

OPERATE PANEL LIGHTS

2 - 9 0

TM 5-5420-226-10

OPERATE DOMELIGHT - Continued

2.

3.

4.

Press plunger (2) and move switch (3) to right for white light (4).

Move switch (3) to left for red light (5).

Turn knob (6) to change brightness.

OFF

1. Press p lunger (2 ) and moveswitch (3) to center to turnlights off.

OPERATING ENGINE COPART-MENT DRAIN VALVE

OPEN

Push lever (1) down and to theright into detent to lock open.

CLOSE

Push lever (1) to left out of detentand pull up.

OPERATING CREW COMPART-MENT DRAIN VALVE

OPEN

Push lever (2) to the right and tothe rear into detent to lock open.

CLOSE

Push lever (2) forward and to theleft.

TA106264

2-91

TM 5-5420-226-10

O P E R A T E P E R S O N N E L H E A T E R

CAUTIONHeater could be damagedif run with heater exhaustplug (1) in.

CAUTIONDo not turn HEATERMASTER switch (2) OFFexcept for deep waterfording or electricaltrouble.

START HEATER

1. Remove exhaust plug (1).

2. Make sure HEATER MASTERswitch (2) is ON.

CAUTIONNotify OrganizationalMaintenance if ON-HI/OFF/ON-LO switch (3)is OFF and indicator (4) islit.

3. With switch, (3) in OFF position, press indicator (4). It should light,indicating it is all right to start heater. If indicator (4) does notlight, notify organizational maintenance.

TA106265

2-92

TM 5-5420-226-10

OPERATE PERSONNEL HEATER - Continued

4.

5.

Move switch (3) to ON-LO. If heater does not start in 2 minutes,move switch (3) to OFF.

After waiting 10 seconds, move switch (3) to ON-LO. If heater

7. You can change air temperature (but not amount of air flow) bymoving switch (3) from ON-LO to ON-HI, or vice versa. Do not stopin OFF position when adjusting air temperature.

STOP HEATER

8. After heater has run 5 minutesor more , move switch (3 ) toOFF.

TA106266

2-93

TM 5-5420-226-10

OPERATING M24 PERISCOPE

1.

2.

3.

4.

Install periscope, if required(page 3-45).

Set MASTER BATTERY switch (1) to ON.

Set BO SELECTOR switch (2)to IR.

Raise and hold UNLOCK lever

12.

13.

14.

15.

16.

17.

5.

6.

7.

8.

9.

10.

11.

Tighten clamp screws (8) afteradjustment.Bend headrest (7) to fit contourof head.AlloW 5-minute warmup periodfor periscope before you adjustfocus.Remove dust caps (9) from left(10) and right (11) focus con-trols.Rotate focus controls forsharpest view through eye-pieces (12).

Replace dust caps (9).

Place lever (4) to B O DRIVE.

Release UNLOCK lever (3).

Set NIGHT VISION switch (5) toON. NIGHT VISION indicatorwill light.

Release elevation adjustmentlever (6).

Adjust periscope to elevationangle you desire.

Push lever (6) forward to lockperiscope in position.

If necessary, adjust headrest (7)by loosening clamp screws (8).

2-94

TA106267

TM 5-5420-226-10

OPERATING AN/VVS-2 NIGHT VISION VIEWER (IF EQUIPPED)

NOTE

Refer to TM 11-5 8 5 5 - 2 4 9 - 1 0 f o radditional operatinginformation

1. Rotate OFF-BRIGHT switchknob (1) to full BRIGHT.

2. If picture on viewer eyepieceis too bright, rotate knob (1)slowly toward OFF unt i lviewing is comfortable toyour eyes.

3. For normal driving, setviewer (2) in the straightforward (detent) position.Viewer can be rotated rightor left to increase terraincoverage.

CAUTION

Keep OFF-BRIGHT switch (1)in OFF and covers on lenseswhen viewer is not beingused. Do not expose viewerto bright light (spotlights,flares, full moon, sun, etc.).

4 . When viewer is installed andnot being used, rotate OFF-BRIGHT switch (1) to OFF.Set NIGHT VISION switch (3)to OFF if vehicle power wasbeing used.

NOTE

when v i e w e r i sdirected toward abright light source,picture on viewere y e p i e c e m a ynormally flash orbriefly go blank.

Viewer range andp i c t u r e m a y b eimproved by turningon the vehicle IRheadlights whenoperating under verylow light conditions.

Change 2 2-94.1

TM 5-5420-226-10

OPERATING AN/VVS-2 NIGHT VISION VIEWER (IF EQUIPPED) -Continued

CLEANING DURING OPERATION

During bad weather conditions such as blowing dust, rain, or snow,outside lens of viewer may require cleaning to get a clear picture.Clean lens as follows:

1. Loose dust may be removed with the lens dusting brush (item 7, appD).

2. To remove stubborn dirt or smudges, use a white cotton rag (item29, app D), moistened with lens cleaner compound (item 12, app D).Gently wipe lens using a circular motion starting at the center andworking toward the edge. Dry lens with a clean dry tissue, usingthe same circular motions.

2-94.2 Change 2

APPLYING PARKING BRAKE

TM 5-5420-226-10

o

o

CAUTION

Do not set parking brakes if weather isfreezing.

Do not attempt to set parking brakesbefore vehicle is stopped, transmissioncan be damaged.

1. Make sure tank is stopped.

2. Press brake pedal (1) onceuntil pressure gage (2) indi-cates 750 to 900 psi. If yougo over 900 psi, it may bedifficult to release brake.

Move shift lever (3) to P(park).

Release pedal (1). Parkingbrake is set.

RELEASING PARKING BRAKE

NOTE

Do not pump pedal. This willincrease force necessary to releaseparking brakes from park position.If pedal has been pumped, releasefor 1 minute to allow mastercylinder to return to unappliedposition.

Press brake pedal (1), push transmission shiftmove transmission shift lever (3) to the Nrelease brake pedal.

lever lock (4) forward,(neutral) postion, and

Change 2 2-95

TM 5-5420-226-10

SHIFTING TRANSMISSION

CAUTIONIf engine stalls when going over an incline, do notallow vehicle to roll backwards while trans-mission shift lever is in a drive range. If enginestarts to run backwards, stop vehicle and shut offengine. Attempt to restart. If braking does notstop vehicle, move transmission shift lever to theN position.

CAUTIONNever go down a slopewith shift lever in N. Donot shift from N to L, H,or R unless engine is atidle speed (700 to 750rpm). Damage to trans-mission will result.

Use this range for moving vehiclerearward and going up steep gradesfor maximum engine power.

CAUTIONNever shift from R to L or H unless vehicle isstopped and engine is at idle speed (700 to 750rpm). Damage to transmission will result.

2-96

TM 5-5420-226-10

SHIFTING TRANSMISSION - Continued

Use this range when driving onfirm, smooth, and level ground.

TA106270

2-97

TM 5-5420-226-10

STEERING VEHICLE

CAUTIONDo not let steering control return to its centerposition by releasing it. Guide it back to centerby hand to avoid damage to steering control orlinkage.

CAUTIONApply steering gradually. Never jerk vehiclearouud. You may cause a track to be thrown ordamage to transmission.

CAUTIONDo not oversteer or let vehicle get out of control.

CAUTIONNever slow vehicle by steering from side to side,you may damage the tracks.

NOTETurning radius is dependent cm how far you turnthe steering control, transmission range youselect, and engine speed.

1. To turn left while vehicle ismoving forward with transmis-sion shift lever in L or H, turnsteering control to your right.

NOTEYou can make a sharperturn with transmissionshift lever in L than youcan with it in H.

2-98

TA106271

TM 5-5420-226-10

2. To turn right while vehicle ismoving forward with transmis-sion shift lever in L or H, turnsteering control to your left.

3. To turn right while vehicle ismoving rearward with transmis-sion shi f t l ever in R, turnsteering control to your right.

4. To turn left while vehicle ismoving rearward with transmis-sion shift lever in R, turnsteering control to your left.

5. To pivot steer with transmis-sion shift lever in N, turnsteering control to your rightfor left pivot turn and to yourleft for right pivot turn.

TA106272

2-99

TM 5-5420-226-10

STARTING ENGINE

NOTEBefore starting engine oroperating vehicle, per-form the operation checksand services (page 2-21).

1. Plate (1) is a list of warningsand instructions you must beaware of before you start theengine. Where necessary, moredetails are provided in the fol-lowing instructions.

2. Apply parking brake (page 2-95).

3.

4.

5 .

6 .

Close engine compartmentdrain valve by pushing lever (2)to left out of detent and pullup.

Close crew compartment drainv a l v e b y m o v i n g l e v e r (3)forward and to the left.

Center steering control (4).

Push manual fuel shutoff handle

2-100

TM 5-5420-226-10

8.

9.

10.

11.

12.

13.

Turn off all electrical switchesexcept FUEL PUMPS (7) andpersonel heater HEATERMASTER.

Turn off all communicationsequipment.

Check that FUEL PUMPSswitch (7) is ON.

Set MASTER BATTERY switch(8) to ON.

Check that indicator (9) is on.

Check that POWERPLANTWARNING LAMP (10) is on.

If engine has not been operated for a week or more, proceed withstep 14. If engine has been operated - within a week, skip step 14 andproceed with step 15. For cold weather starting, skip step 15.

TA106274

2-101

TM 5-5420-226-10

STARTING ENGINE - Continued

14. Purge air from fuel lines bypumping purge pump handle (11)until you feel a back pressure.Three or four strokes should doit.

CAUTIONDo not start vehicle ifradio is being used. Radiodamage could result.

15. Normal Starting.

Press accelerator pedal (13)about 2/3 to 3/4 of its traveland press and hold STARTERswitch (14). When enginestarts, release STARTERswitch and proceed to step 17.If engine does not start after 30(maximum) seconds cranking,release STARTER switch andwait at least 2 minutes beforeyou attempt another start. Ifengine does not start aftersecond try, troubleshoot asspecified in troubleshootingtable (page 3-3).

CAUTIONDo not hold manifoldheater switch (12) longerthan 15 seconds Damageto manifold heaters couldresult.

Press accelerator pedal (13)about 2/3 to 3/4 of its traveland press and hold STARTERswitch (14). While engine iscranking, press manifold heaterswitch (12) and pump purgepump handle (11). If enginedoes not start a f t e r 3 0(maximum) seconds cranking,release STARTER switch andwait at least 2 minutes beforeyou attempt another start. Ifengine does not start aftersecond try, troubleshoot asspecif ied in troubleshootingtable (page 3-3).

TA106275

2-102 Change 6

10


17. If engine starts and runs ononly one bank, depress andhold brake (15 ) and loadengine with transmission byshifting lever (6) to H to

19.

20.

21.

TM 5-5420-226-10

18. As soon as engine starts, checkthat ENGINE OIL PRESSUREindicator needle (16) is in thegreen area and that POWER-PLANT WARNING LAMP (10)is OFF. If oil pressure does notcome up, shut off engine and

Do not accelerate engine beyondwarm up speeds (1,000 to 1,200 rpm).Damage to engine could result.

Press accelerator pedal (13) until tachometer (17) indicates 1,000to 1,200 rpm (1,200 to 1,800 rpm for 3 to 5 minutes in coldweather).

Pull up accelerator lock lever (18).

Let engine run for 3 to 5 minutes.

NOTE

If engine is to be idled for anextended period, set for 1,000 to1,200 rpm to prevent smoking.

TA106276

2-103

TM 5-5420-226-10


22.

23.

Check thatfollows:

a. ENGINEand (20) :

indicators are as

OIL indicators (19)green area.

b. BATTERY-GENERATORindicator (21): green area.

c. TRANSMISSION OIL indica-tors (22) and (23): greenarea.

d. POWERPLANT WARNINGLAMP (10): off.

e. DUST DETECTORWARNING LAMP(23.1) (If equipped): off.

2-104

If POWERPLANT WARNINGLAMP (10) l ights duringvehicle operation, check en-gine and transmission indic-ators (19), (20), (22), (23), andDUST DETECTOR WARNINGLAMP (23.1) (if equipped) todetermine whether engine,transmission, or air intakesystem is at fault. Stopengine and troubleshoot (page3-10).

Change 2

.

TM 5-5420-226-10

25. If BATTERY-GENERATOR in-dicator is in the right redarea, alternator is overcharg-ing. Notify organizationalmaintenance.


24. If the BATTERY-GENER-ATOR indicator needle is inyellow or left red area, alter-nator is not charging. Stopengine and troubleshoot (page3-12).

Change 2 2-104.1/(2-104.2 blank)


26. Ensure that air doesn’t leak atair cleaner elbows (24), airintake flanges, and cover plategaskets.

27. Check that window (25) of indi-cater (26) is clear (not red).

PLACING VEHICLE IN MOTION

1.

2.

3.

Turn on required lights (1).

Press and release acceleratorpedal (2) to release acceleratorlock (3). Let engine idle (700 to750 rpm).

Press brake pedal (4) and movetransmission shift lever (5)from P to N to release parkingbrake.

TM 5-5420-226-10

28. If vehicle is equipped withair cleaner blower motors,ensure that air exhaust canbe felt at all four blowermotor exhaust elbows (27)before placing vehicle inmotion.

Change 2 2-105

TM 5-5420-226-10PLACING VEHICLE IN MOTION - Continued

4.

5.

6.

7.

NOTE

If you cannot releasebrake, notify organi-zational maintenance.

While you maintain pressureon brake pedal (4), movetransmission shift lever (5) todesired range (L or R).

Release brake pedal (4).

slowly press acceleratorpedal (2).

Steer vehicle with steeringcontrol (6).

STOPPING ENGINE1. After stopping vehicle, run

engine at 1,000 to 1,200 rpmfor several minutes to cool.

2. After running engine at 1,000to 1,200 rpm to cool, let itidle (700 to 750 rpm).

3. Turn off all electrical equip-ment.

2-106 Change 2

STOPPING VEHICLE

1. Release accelerator pedal (1).

2. Press and hold brake pedal (2)to stop vehicle.

3. Move transmission shift lever(3) to desired range (N, L, orR); or, i f you are parking,move transmission shift lever(3) to P and lock parkingbrake.

4. Release brake pedal (2).

TM 5-5420-226-10

STOPPING ENGINE - Continued

4.

5.

6.

Raise and hold ENGINE FUEL SHUTOFF switch (3) until engine stops.

If engine does not stop within 15 seconds, shut off fuel with MANUALFUEL shutoff handle (4) and increase engine rpm to 1,400. Notifyorganizational maintenance if it was necessary to shut off enginewith MANUAL FUEL shutoff handle.

Turn OFF MASTER BATTERY switch (5).

If vehicle is to remain parkedf o r a w e e k o r m o r e , p l a c eMANUAL FUEL shutoff (4) inOFF position.

Open crew compartment drain valve (7) and engine compartmentdrain valve (8) (page 2-91).

TA106280

2-107

TM 5-5420-226-10

DRIVING VEHICLE

F L A T G R O U N D

1.

2.

When driving on hard-surfaced roads, avoid oversteering. Make turnsgradually.

Your speed depends on:

a.b.c.d.e.f.

Surface conditions.Weather.Visibility.Traffic.Speed limits (if posted).Tactical situation.

CROSSING, DITCH, SHELL HOLE, OR TRENCH

CAUTIONAvoid crossing ditches shellholes or trenches that wouldcause rear fenders to strikeor dig into the ground. Becareful not to damage rearfenders when climbing out ofditches, shell holes , ortrenches. Maximum widthof ditch that vehicle cancross is 84 inches (214.6 cm).

2-108

TA106281

1.

2.

3.

4.

TM 5-5420-226-10

Lift foot from accelerator (1)as you approach obstruction.

Press accelerator (1) fully whenyou start over obstruction.

L i f t f o o t f r o m a c c e l e r a t o rw h e n y o u c r e s t ( v e h i c l e i scentered on obstacle).

Let vehicle settle over crest.

When front o f t racks touchground, press accelerator (1)and continue.

TA106282

2-109

TM 5-5420-226-10

DRIVING VEHICLE - Continued

1. Move transmission shift lever(1) to L.

2. Press accelerator pedal (2) asrequired.

3. If starting from a parkedposition on a hill, do thefollowing:a. Press and hold brake pedal

(3).

b. Move transmission shiftlever (1) from P to L.

c. Press accelerator (2).

d. Release brake pedal (3).

2-110

TM 5-5420-226-10

CROSSING THE CLASS 60 ARMORED VEHICLE LAUNCHED BRIDGE

WarningCare must be token to avoid inury to personnel, and excessive wearand tear to the Class 60 Armored Vehicle Launched Bridge.

1. Center vehicle on bridge.2. Do not exceed 8 MPH (13 KPH) crossing speed.3. Do not stop, accelerate or shift gears while on the bridge.

Change 3 Page 2-110-1/(2-110.2 blank)

TM 5-5420-226-10

DRIVING VEHICLE - Continued

GOING DOWNHILL

1.

2.

3.

Move transmission shift lever(1) to L.

Keep engine speed below 2,400r p m b y a p p l y i n g b r a k e s i fnecessary.

At bottom of hill. move trans-mission shift lever (1)tion desired.

to posi-

TA106284

2-111

TM 5-5420-226-10

LAUNCHING BRIDGE - Continued

1.

2.

3.

4.

5.

NOTEIn considering launching site, it is important toconsider which end of bridge you will be retrievingfrom. This end of bridge should be provided moreground support if possible.

Start engine (page 2-100).

Move vehicle into desired position in-line with selected site.

Press and hold brake pedal (1).

Move transmission shift lever (2) to N.

CAUTIONDo not pull up clutch lever(3) with engine runningover 1,000 rpm, as powertake-off components maybe damaged.

Pull up clutch lever (3).

NOTE 6. PressA snap can be felt when

a c c e l e r a t o r ( 4 ) u n t i lengine is running at 1,800 rpm.

Clutch is properly en-gaged. 7. Pull up accelerator lock (5).

CAUTIONWhen launching bridgewith bridge resting onbridge seat, never pushOVERHEAD lever (6)down. This will acti-vate overhead cylinder,pushing bridge down onbridge seat, resulting inbreaking bridge seatweld.

NOTEHolddown chains areautomatically releasedwhen operator pushes upoverhead cylinder tom-trol lever.

2-112

TA106285

TM 5-5420-226-10


WARNING

Operator must be completely inside

vehicle with cupola cover closed

while launching bridge. If not,

injury or death may result.

N O T EEase up on brake pedal (1)while extending overheadcylinder to allow vehicleto ride up on outrigger (8).

8. Pull up OVERHEAD lever

until overhead cylinder (7) is

(6)

all

the way out and-outrigger (8) is

firmly on ground.

NOTE

Listen for change in sound of hydraulic pump. This

indicates that overhead cylinder (7) is all the way

out. If it is not, bridge will shift when lowered

till overhead cylinder bottoms out.

9. Make sure overhead cylinder (7) is all the way out.

10. Press brake pedal (1) and move shift lever (2) to P, engaging parkingbrake.

TA106286

Change 3 2-113

TM 5-5420-226-10


11. Pull up TONGUE lever (9) until

bridge just starts to lean over

and starts to open, then release

the lever.

NOTE

Correct position of bridge is about 2 feet above

groung when fully open.

13. Pull up TONGUE lever (9) until bridge settles on ground.

14. Pull SCISSORS lever (10) down until scissoring cables (11) are slack.

15. Push down accelerator lock lever (5).

16. Push down clutch lever (3). TA106287

2-114

TM 5-5420-226-10


17.

18.

19.

20.

21.

22.

23.

24.

Pull OVERHEAD lever (6) upand down at least three timesto relieve pressure.

Pull TONGUE lever (9) up anddown at least three times.

Raise clutch lever (3).

Press a c c e l e r a t o r ( 4 ) u n t i lengine speed is 1,800 rpm.

Raise acce lerator lock lever(5).

Pull up LOCK lever (12) untillocking plugs (13) are retractedin tongue (14).

push down accelerator locklever (5).

Push down clutch lever (3).

TA106288

2-115

TM 5-5420-226-10


25. Move shift lever

NOTEuse care in backingvehicle to prevent exces-sive bulldozer action ofoutrigger.

(2) to R andback vehicle slowly, whilechecking for vehicle separationfrom the bridge.

NOTEQuick-disconnect fittingsbetween launcher andbridge will disconnectautomatically when vehi-cle is backed away frombridge.

26. If vehicle does not come free ofbridge:

a. Move shift lever (2) to N.

b. Pull up clutch lever (3).

c. Press accelerator (4) untilengine is running 1,800 rpm.

d . Pul l up accelerator locklever (5).

NOTEAs a safety measure, ejection cylinder control isinterlocked with locking cylinder rod end line andoperates only when locking cylinder control isheld in retracting position.

e. Pull up LOCK lever (12) andEJECT lever (15) at sametime until vehicle is free ofbridge.

TA106289

2-116


TM 5-5420-226-10

27.

28.

29.

i. Move shift lever (2) to Rand back vehic le slowly,while checking that it isfree of bridge.


Press a c c e l e r a t o r ( 4 ) u n t i lengine is running 1,800 rpm.

Pull up accelerator lock lever(5).

TA106290

2-117

TM 5-5420-226-10

30.

31.

32.

33.

34.

35.


Push down TONGUE lever (9)until tongue is fully retracted.

Push down OVERHEAD lever(6) until overhead cylinder isfully retracted.

Push down accelerator locklever (5).


Push up, thenhydraulic levers15) at least three

Move vehicle to

down on all(6, 9, 10, 12,times.

desired loca-

36.

37.

Install dust caps (17) on plugs(18) and dust plugs (19) onsockets (20).

Insert lockingcenter of bridge.

2-118

pins (21) at

TA106291

TM 5-5420-226-10

RETRIEVING BRIDGE

2-119

TM 5-5420-226-10

RETRIEVING BRIDGE - Continued

5.

6.

Remove bridge locking pins (8).

Remove dust plugs (9) fromsockets (10) and stow in springclips. Remove dust caps (11)from plugs (12).

7.

8.

9.

10.

11.


Move vehicle in-line withbridge.

Move shift lever (13) to N.


NOTEA snap can be felt whenclutch is properly en-gaged.

Press accelerator (15) untilengine is running 1,800 rpm.

12. Pull up accelerator lock lever(16).

2-120

TA106293


TM 5-5420-226-10

13.

14.

Pull up OVERHEAD lever (17)until outrigger (18) is almosttouching ground.

Pull up TONGUE lever (19)until tongue (20) is alined withbridge diaphragm (21).

16.

17.

18.

Pull up OVERHEAD lever (17)until outrigger (18) is firmly onground and overhead cylinder isall the way out.

Slowly move vehicle forwardand aline pintles (22) withpintle sockets (23).

Pull TONGUE lever up or downuntil pintles (22) are in pintlesockets (23) and tongue fullycontacts diaphragm (21).

Push lock lever (24) down toextend locking pins.

TA106294

2-121

TM 5-5420-226-10


19.

20.

21.

22.

23.

24.

25.

Push down accelerator locklever (16).


Pull SCISSORS lever (25) upthen down at least three times.

Pull up and hold release handles

Push plugs (12) into sockets (10).

26 ) .

Release the handles (26) and push plugs (12) into the sockets (10) untilsockets retract.

Visually check assembly to insure it is securely connected.

2-122

TM 5-5420-226-10

26. If couplings will not lock:

a.

b.

c .

d.

e.

f.

Open both valves (27) onscissors cylinder to relievepressure.

Pull up and hold releasehandles (26).

Connect socket (10 ) andplug (12).

Release the handles (26) andpush plugs (12) into sockets(10) until the sockets re-tract.

Visually check sockets (10)and plugs (12) to make surethey are fully connected.

Close both valves (27) onscissors cylinder.

27. Remove antenna.

28. Close and latch operator’s cu-pola cover.

TA106296

2-123

TM 5-5420-226-10


29.

30.

31.

32.

33.


Press accelerator (15) untilengine is running 1,800 rpm.

Pull up accelerator lock lever(16).

NOTEFree end of bridge should not be more than 2 feetabove ground during retrieval.

Push up SCISSORS lever (25)until scissors cables are taut.Push down TONGUE lever (19)and SCISSORS lever (25) untiltongue and scissors cylindersare fully retracted with bridgefolded and in upright position.

Push down OVERHEAD lever(17) until bridge is just restingon bridge seat (28).

2-124

TM 5-5420-226-10

34.

35.

36.

37.

38.

39.

40.

Install holddown chains (4) withbolt (2).

Install nut (3) on bolt fingertight.

Insert locking pin (1) throughhole in bolt (2).

Install turnbuckle eyes (29) inopening (30).

If holddown pin (31) isextended, pull up OVERHEADlever (17) until holddown pin isretracted.

Push down OVERHEAD lever(17) until holddown pin (31)extends through turnbuckleeyes (29) completely.

Tighten tumbuckles (32) withpinch bar (item 4, section III,app B).

2-125

TM 5-5420-226-10


41. Push down acce lerator locklever (16).

42. Push down clutch lever (14).

43. Pull up then push down on allhydraulic levers at least threetimes to release pressure insystem.

44. Install radio antenna.

1.

2.

3.

Operation of amplifier AM-1780/VRC and operation of intercom setsare contained herein.

Refer to TM 11-5820-498-12 for operation of radio sets AN/VRC-53and -64. Refer to TM 11-5820-401-10-2 for operation of radio setAN/VRC-46. Refer to TM 11-5915-224-14 for operation of transientsuppressor MX-7778A/GRC.

Notify organizational maintenance for removal and installation ofradio sets.

1. To turn amplifier on:

a. Set MASTER BATTERYswitch (1) to ON.

TA106299

2-126

TM 5-5420-226-10

Move RADIO TRANS switch (6) to CDR + CREW, CDR ONLY, orLISTENING SILENCE.

2. To turn amplifier off:

a. Move MAIN PWR switch (2)to OFF.

b. Set MASTER BATTERYswitch (1) to OFF if you donot need i t on for o theroperations.

TA106300

2-127

TM 5-5420-226-10

OPERATING AUCILIARY EQUIPMENT - Continued

INTERCOM SET C-2298/VRC

1.

2.

3.

Turn amplifier AM-1780/VRC on: (page 2-126)

To transmit on receiver-transmitter:

a. Move MONITOR switch (1) to ALL, A, or B.

N o t eInsure communication cord withyellow band is connected to the leftintercom box connector.

b. Connect communication cords to intercom box.

c. Adjust VOLUME knob (2) to desired level.

d. Hold push-to-talk switch (3) forward to transmit.

To talk on intercom:

a.

b.

c .

4. T o

Move MONITOR switch (1) to INT ONLY.

Adjust VOLUME knob (2) to desired level.

Set push-to-talk switch (3) rearward to talk.

turn intercom sets off: (page 2-127)

Turn amplifier AM-1780/VRC off. TA106301

2-128

TM 5-5420-226-10

OPERATING AUXILIARY EQUIPMENT - Continued

TYING ANTENNA DOWN

1. Refer to TB SIG 291 for tiedown information.

2. Refer to TB SIG 291 for safety measures to be observed when usingwhip-type antennas.

PORTABLE FIRE EXTINGUISHER

1.

2.

3.

4.

Remove portable fire extinguisher(1) from bracket behind operator’sseat.

Break wire (2) and pull out pin (3).

Pull horn (4) up to level position.

Take fire extinguisher (1) as closeto fire as possible and point horn(4) directly at base of flames.

NOTEFire extinguisher is mosteffective when held withinfive feet (1.5 meters) of fire.

5. Press down and hold trigger (5) to shoot fire extinguisher at fire.

NOTE

If fire was inside. vehicle, open all hatches and let vehicle air out for fiveminutes before continuing operation.

6.

7.

8.

9.

Put pin (3) back into trigger (5).

Turn horn (4) down.

Tag fire extinguisher (1) with word empty.

Replace empty fire extinguisher (1) as soon as possible.

Change 6 2-129

3

TM 5-5420-226-10

M239 SMOKE GRENADE LAUNCHER

1. Make sure grenade power switch (1) is OFF (light (2) OFF).

2. Set MASTER BATTERY switch to OFF.TA271841

2-130 Change 1

TM 5-5420-226-10

M239 SMOKE GRENADE LAUNCHER - Continued

LOADING - Continued

3.

4.

Remove canvas covers (3) from both dischargers (4) and stowin fender stowage box (5).

Check that all barrels of each discharger are clear and clean.

Change 1 2 - 1 3 0 . 1

TM 5-5420-226-10


LOADING - Continued

6.

7.

Push six grenades (6), base first, into barrels of each discharger (4).Spring clip (7) on grenade base must engage tip plug (8) at bottom ofeach barrel.

Rotate each grenade (6) 1/4 to 1/2 turn in either direction to makesure of electrical contact.

Change 1

TA271842

2-130.2

TM 5-5420-226-10

Change 1 2-130.3

TM 5-5420-226-10


FIRING - Continued

2-130.4 Change 1

TM 5-5420-226-10


FIRING - Continued

5. When grenade power light (2)comes ON, press either FIRESMOKE LEFT (3), RIGHT (4),or both pushbuttons to firesmoke grenades from dis-chargers.

HANGFIRES, MISFIRES, AND DUDS

1.

2.

3.

A HANGFIRE smoke grenade is a temporary failure or delay inaction of propellant charge. When hangfire occurs, wait 10 secondsand make two additional attempts to fire with 10- second intervals.If grenade still does not fire, wait 5 minutes and treat it as amisfire.

A MISFIRE is the failure of smoke grenade discharger to firegrenades. When misfire occurs, wait 10 seconds and make twoadditional attempts to fire with 10-second intervals. If grenadestill does not fire, wait 5 minutes and remove misfired grenadefrom discharger and place it 200 meters (219 yards) away frompersonnel and equipment. Notify EOD personnel and give type,quantity, and precise location of misfired grenades.

A DUD is a smoke grenade that has fired from a discharger, but has failed toburst or burn. Wait 15 minutes with hatches closed. Notify EOD personneland give type and precise location of dud grenade.

Change 6 2-130.5

3

TM 5-5420-226-10


UNLOADING

1. Make sure grenade power switch(1) is OFF (light is OFF).

2. Set MASTER BATTERY switch(2) to OFF.

TA271846

2-130.6 Change 1

TM 5-5420-226-10


UNLOADING - Continued

3.

4.

Remove covers (3), if installed,from right and left smoke gre-nade dischargers (4).

Unlatch and open right and leftstowage boxes (5).

5. Remove all grenades (6) fromboth grenade dischargers (4) andboth stowage boxes (5).

TA271836

Change 1 2-130.7

TM 5-5420-226-10

M239 SMOKE GRENADE LAUNCHER (IF EQUIPPED) - Continued

UNLOADING - Continued

2-130.8 Change 6

TM 5-5420-226-10

Section IV. OPERATION UNDER UNUSUAL CONDITIONS

GENERAL CONDITIONS

1. In addition to normal preventive maintenance checks and services,you must clean and lubricate your equipment more often to compen-sate for extremes of temperature, humidity, and terrain conditionsthat are present or expected. Cleaned and lubricated equipmentinsures proper operation and guards against excessive wear andfailure.

2. When equipment constantly breaks down due to operating underextreme conditions, report failure(s) using SF Form 368.

OPERATING IN EXTREME COLD WEATHER

GENERAL

1.

2.

3.

4.

5.

You must prepare your equip ment when you are scheduled foroperation in extreme cold. Generally, extreme cold will causelubricant to thicken; f reeze bat ter ies or prevent them fromfurnishing enough current for start ing the engine; crack insulationand cause electrical short circuits; prevent fuel from vaporizing toform a combustible mixture for starting; and will cause somematerials to become hard, brittle, and easy to damage or break.

You should not suddenly move a sighting instrument from cold towarm temperatures, or vice versa. Moisture caused by doing thismay cause cloudy optics and rusty internal parts.

Always watch for indications of weather effect on equipment.

Be cautious when moving vehicle after a shutdown. Thick lubricantsmay cause failure of parts. After you warm up engine thoroughly,drive vehicle slowly about 100 yards to warm up lubricants to a pointwhere normal operation can be expected.

Keep an eye on temperature and pressure indicators. If readings areabnormal, stop vehicle and investigate cause (pages 3-10 and 3-11).If you cannot find and correct the problem, notify organizationalmaintenance.

TA106303

(2-130.9 blank)/2-130.10 C h a n g e 1

1.

2.

TM 5-5420-226-10

When you stop for short shutdown periods, park your vehicle in asheltered spot out of the wind. If you cannot find a sheltered spot,park so that front of vehicle faces into wind. This keeps rain, snow,and sleet from entering engine compartment through rear grille door.When you shut down for a long period, and cannot find dry ground,park vehicle on a footing of planks or brush to prevent tracks fromfreezing to ground.

Additional things you must do when getting ready for shutdown are:

a.

b.

c .

d.

e .

f .

g .

h.

Place control levers in neutral position to prevent possiblefreezing in an engaged position.

Cover all grille doors to retain heat and prevent snow entrancewhich will melt and freeze in engine compartment.

Open hull drain valves to drain melted snow while engine heat ispresent. After draining, close drain valves to prevent theirfreezing in an open position.

Clear mud, snow, and ice from vehicle as soon as you can afteryou stop.

If you know or suspect that fuel tanks contain excessive water,notify organizational maintenance.

To prevent linkage freezing, do not apply parking brake.

Fill your fuel tanks as soon as possible to reduce condensation.

See TM 9-6140-200-12 for battery care and maintenance.

ENGINE AIR CLEANER INTAKES

GENERAL

Under normal and especially dusty conditions, operate vehicle with aircleaner intakes set to draw air from crew compartment. When operatingin extreme cold, where you want all the heat possible, and if a nuclear,biological or chemical attack is expected, set intakes to draw air fromthe engine compartment.

TA106304

2-131

TM 5-5420-226-10

2.

3.

4.

U s i n g 1 / 2 i n c h s o c k e t a n dratchet, remove four screwsand lockwashers (1) from airintake cover (2).

Carefully remove cover (2) andgasket.

Using 9/16 inch socket with 5inch extension and rat chet(item 28, sec III, app B), removesix nuts and lockwashers (3).

Using 9/16 inch socket withextension and ratchet, removeeight nuts and lockwashers (4).

2-132

5.

6.

Care fully remove intake (5)fro m bulkhead.

Check to see i f gaskets orintakes are damaged. Ifgaskets and/ordamaged, notifymaintenance.

intakes areorganizational

TA106305

TM 5-5420-226-10

ENGINE AIR CLEANER INTAKES - Continued

REVERSING INTAKES TO DRAW AIR FROM ENGINE COMPARTMENT -Continued

7.

8.

9.

Position intake (5) cm flangestuds (6) with screen towardengine compartment.

Install six nuts and lockwashers(3) on studs (6).

Using 9/16 inch socket with 5inch extension and ratchet,tighten six nuts (3).

10.

11.

Install eight nuts and lockwashers (4) on studs (7).

Using 9/16 inch socket extension and ratchet, tighten eight nuts (4).

12. Position cover (2) with gasketon intake (5) and install fourscrews and lockwashers (1).

13. Using 1/2 inch socket sndratchet, tighten four screws (1).

2-133

TM 5-5420-226-10

OPERATING IN HOT, HUMID, OR SALTY AREAS

1.

2.

3.

4.

5.

If you operate your vehicle for long periods at high speeds, on long hard pullsin low or reverse on steep grades, or in soft terrain, you may cause engine tooverheat. Avoid using low and reverse for long periods whenever possible.Keep an eye on ENGINE and TRANSMISSION TEMP F indicators. If eitherindicates in red area, stop vehicle and run engine at 1000 to 1200 rpm untilindicator is in green area. Resume operation. If temperature does not returnto normal or if overheating recurs, shut down engine and notifyorganizational maintenance.

Frequently check for moisture, corrosion, and fungus growth. Dry allexposed unpainted surfaces and lubricate as prescribed in LO 5-5420-202-12.

Shield sighting equipment as much as possible from direct rays of the sun.

Weapons require cleaning and 1 ubricating more often when weapons are notin use. Cover exposed metal surfaces with a film of general purposelubricating oil as prescribed in the LO and keep covers in place.

See TM 9-6140-200-12

OPERATING IN DUSTY

for battery care and maintenance.

OR SANDY AREAS

CAUTION

Do not operate this vehicle in dusty or sandy areas withoutthe inspection plates or drain plugs. Damage to enginecomponents may result.

NOTE

Air cleaners are to be opened and serviced only byorganizational maintenance personnel.

1. Operation in dusty and sandy areas shortens service life of the air cleaner.Service inspection parts, air cleaner filter element, and air cleaner boxassembly more frequently.

2. When at halt for extended periods, cover entire vehicle with canvas. Whereentire vehicle cannot be covered, protect periscopes and other opticalsurfaces against scratches by wind-blown sand. Protect engine compartmentagainst entry of sand or dust.

2-134 Change 6

TM 5-5420-226-10

OPERATING IN DUSTY OR SANDY AREAS - Continued

2. When extended for crossing, frequently check hydraulic seals, hydrau-lic lines and fittings for leaks. Wipe hydraulic cylinders clean after useand cap all hydraulic fittings.

3. Keep scissoring cables clean of sand buildup.

4. Inspect tracks/sprockets often for signs of track guide and sprockettooth wear.

5. Avoid sharp high speed turns in loose or fine sand.

6. Track tension is particularly important in loose or fine sand.

NOTE

Additional information on environmental, equipment canbe found in FM 90-3, Desert Operations.

BRAKING VEHICLE WITH ENGINE

CAUTION

Use this action only in an emergency when all other ac-tions fail.

1. The engine will act as a partial brake when moving forward downhillwith transmission in reverse or moving rearward downhill with trans-mission in low or high. Use of engine as a brake should be avoided andshould be used only when vehicle brakes will not hold.

WARNING

Steering is reversed when vehicle is moving in a for-ward direction with transmission in reverse or whenvehicle is moving in a rearward direction with trans-mission in low or high.

* U.S. GOVERNMENT PRINTING OFFICE 1991 543-016/40049

Change 4 2-134.1(2-134.2 blank)

TM 5-5420-226-10

BRAKING VEHICLE WITH ENGINE - Continued

2. To turn front of vehicle rightwhile moving forward downhillwith transmission in reverse,turn steering control to yourright.

4. To turn rear of vehicle rightwhile moving rearward downhillwith transmission in low orhigh turn steering control toyour left.

3. To turn front of vehicle leftwhile moving forward downhillwith transmission in reverse,turn steering control to yourleft.

TA106308

2-135

sec III

app B

TM 5-5420-226-10

BRAKING VEHICLE WITH ENGINE - Continued

5. To turn rear of vehicle leftwhile moving rearward downhillwith transmission in low orhigh, turn steering control to

your right.

FORDING

2-136 Change 6

TM 5-5420-226-10

FORDING - Continued

Close and lock both hatches(4).

c .

d. Insure that engine air cleaner intakes (5) are set to draw air fromcrew compartment (intake screen (6) on crew compartment sideof bulkhead). If intakes are set to draw air from engine compart-ment, see page 2-132 for reversing procedures.

e. Insure that hull drain valves (7) are closed (page 2-91).

TA106310

2-137

TM 5-5420-226-10

F O R D I N G - C o n t i n u e d

f. Set HEATER MASTERswitch (8) to OFF.

g. Start and warm up engine.

h. Set MASTER BATTERYswitch (9) to OFF.

i . Drive slowly go ing intowater or you may cause a“bow wave”.

j . Drive at 3 to 4 mph (5 to 6kph) while fording. Keepengine speed up to at least1,000 rpm. Slow vehiclewith brake, if necessary,while maintaining 1,000rpm.

C A U T I O NIf you accidentally drive into water more than 4feet deep, do not stop engine while it is underwater. Exhaust pressure will prevent waterf r o m e n t e r i n g e n g i n e t h r o u g h t h e system. If engine stops while it is under water,do not try to restart. Have vehicle towed fromwater as soon as possible. If you must stopvehicle while engine is under water, shifttransmission to high, apply and hold brakes andkeep engine speed at 1,000 rpm. Do not attemptto operate vehicle after submerging untilorganizational maintenance has checked it.

2. After fording, perform after fording maintenance service, page 3-58.

T A 1 0 6 3 1 1

2-138

TM 5-5420-226-10

SLAVE STARTING

You will need a live (operational)vehicle to start your dead vehicle.

Three persons are required toperform the slave startingprocedure. One person is stationedat each driver’s station of both thelive and dead vehicles for operation.An organizational maintenancemechanic is stationed outside thevehicles to coordinate the operation.

Use slave cables and slave cableadapters that are provided in theoganizational maintenance tool set.

Change 6 2-139

TM 5-5420-226-10SLAVE STARTING - Continued

2-140 Change 6

TM 5-5420-226-10

SLAVE STARTING - Continued

2. Inspect slave cables for:

a. Frayed insulation or exposed wiring.

b. Cable connectors and adapter completeness and serviceability.

3. Notify Organizational Maintenance of any defects.

4. Dead vehicle:

a. Check that connectionson battery cables, leads,and terminals are cleanand tight.

b. In cold climates: Makesure batteries (9) are notfrozen. Take off caps(10). If you see ice orfrost inside cell opening(11), batteries are fro-zen.

c. Check for correct elect-rolyte level in all sixbatteries (9).

d. Notify OrganizationalMaintenance of any de-fects.

5. Station one person in driver’sstation of each vehicle. Or-ganizational mechanic willgive directions from theground.

6. Live vehicle: Start engine(see operator’s manual).

Change 6 2-140.1

TM 5-5420-226-10


7.

8.

9.

10.

Make sure:Both vehicles:a. Parking brakes are

set.b. Hatches are locked

open.c. AH electrical equip-

ment is off.Dead vehicle: MASTERBATTERY switch (5) isset to OFF.

Live vehicle: Set MASTERBATTERY switch (5) to OFF.Keep engine running.

2-140.2 Change 6

Live vehicle: Park besidedead vehicle, facing sameway. If that is not possible,traverse main gun to rear, ifso equipped. Park live vehicleat right angle to dead vehicle.

Both vehicles: Set parkingbrake.

TM 5-5420-226-10

Change 6 2-140.3

TM 5-5420-226-10


NOTE

If tactical situation will not allowyou to take the time to charge bat-teries, go to step 16.

15. Charge dead vehicle’s bat-teries:

a. Live vehicle: SetMASTER BATTERYswitch (5) to ON tocharge batteries in deadvehicle.

b. Live vehicle: Set engineto run at 1,000 to 1,200rpm.

c. Live vehicle: Let enginerun for up to 30 minutesif you have time.

16. Start dead vehicle:

a. Both vehicles: SetMASTER BATTERYswitch (5) to ON.

b. Live vehicle: Set engineto run at 1,000 to 1,200rpm.

CAUTION

When you try tostart dead vehicle,do not holdSTARTER switch(14) longer than 15seconds. Wait 3 to 5minutes before mak-ing second attemptto start.

c. Dead vehicle: Try tostart engine once. If en-gine starts, go to step17.

2-140.4 Change 6

1

TM 5-5420-226-10

Change 6 2-141

TM 5-5420-226-10


f.

g.

h.

TOW STARTING

Both vehicles: Set MAS-TER BATTERY switch (5)to ON.

Both vehicles: Set engineto run at 1,000 to 1,200rpm to charge batteries.Run engines for 30minutes, if you have time.

Return adapter, if used,and slave cable to Organi-zational Maintenance.

Vehicle cannot be tow-started. Vehicle can only be towed from therear with a tow bar. Refer to page 2-143 (towing a disabled vehicle).

2-142 Change 6

(TM 5-5420-203-14).

page 2-146

TM 5-5420-226-10

TOWING A DISABLED VEHICLE

TA106316

Change 6 2-143

TM 5-5420-226-10

TOWING A DISABLED VEHICLE - Continued

h. Using 3/4 inch combinationwrench, rotate six camscrews (7) toward center ofvehicle.

NOTETwo persons are requiredto lift shroud.

i. Lift and remove shroud (8).

NOTEYou may have to rotatequick-discoxmec t ring (9)to gain access to screw(10) and lockwire (11).

j. Cut lockwire (11) at finaldrive, both sides of trans-mission.

k. Remove lockwire.

NOTEWhen removing screw (10),hold on to quick-dis-connect ring (9), or it willsnap open and fall downinto engine compartment.

1. Using 3/4 inch combinationwrench, remove screw (10).

NOTEYou may have to hitquick-disconnect ring (9)to remove.

m. Separate quick-disconnectring (9).

n. Remove quick-disconnectring (9) from both sides oftransmission.

2-144

TM 5-5420-226-10

o.

q.

r.

s.

Insert pinch bar (12) (item 4, sec III, app B) and, using hammer, pryfinal drive adapter (13) toward final drive (14) far enough to freefinal drive adapter from universal joint (15) on both sides oftransmission.

Reposition shroud (8). Using 3/4 inch combination wrench, rotate sixcam screws (7) to secure shroud.

Stow remaining parts in fender box.

Close rear doors (3).

Using 1-1/8 inch socket andratchet, install four screws (1).

TA106318

2-145

TM 5-5420-226-10

TOWING A DISABLED VEHICLE - Continued

3.

4.

5.

6.

7.

8.

9.

Connect tow bar (16) to towing eyes (17) of disabled vehicle (18).

a.b.

c.

d.

Remove cotter pin (19) from pintle (20) of towing vehicle (21).

Raise latch (22) and lift lock (23).

Aline pintle (20) with tow bar (16), lower tow bar into pintle,lower lock (23).Install cotter pin (19).

Remove chocks.

Do not tow vehicle over 3 mph with universal joints connectedwith tracks removed. Do not exceed 12 mph under any conditions.

or

Tow vehicle in a straight line and when necessary, make wide turns.

Upon completion of towing operation, chock roadwheels of disabledvehicle.

Disconnect tow bar.

Notify organizational maintenance.

2-146

100

page 2-106

TM 5-5420-226-10

SLAVING HYDRAULIC SYSTEM

1. On operating vehicle:

2. On both vehicles:

a. Set parking brakes (page 2-95).

b. Push down clutch lever (1).

2-147

TM 5-5420-226-10

SLAVING HYDRAULIC SYSTEM - Continued

c.

d.

e.

Pull all hydraulic controllevers (2) up and down,three times to relieve pres-sure in system.

Open commander’s hatches(3).

Remove slave hose assem-blies (4) (item 30, sec. III,app B) from left rear fenderstowage boxes (5).

2-148

TM 5-5420-226-10

3. On non-operating vehicle:

a. Disconnect inlet hose coup-ling half (8) from pump out-put coupling half (9). Putprotective covering on cou-pling half (9).

c. Remove dust caps (12) fromslave hoses (4).

b. Disconnect return hosec o u p l i n g h a l f ( 1 0 ) f r o mvalve outlet coupling half(11). Put protective cover-ing on coupling half (10).

TA106322

2-149

app B sec. III

TM 5-5420-226-10

2-150

i . Push female coupling half(6) onto valve outlet cou-

TM 5-5420-226-10

pling half (11).

j . Pull on slave hose (4) tomake sure connect ion i slocked.

4. On operating vehicle:

a.

b.

c .

d.

e.

Disconnect inlet hose cou-pling half (8) from pumpoutput coupling half (9) .Put protective covering oncoupling half (8).

Disconnect return hose cou-pling half (10) from valveoutlet coupling half (11).Put protective covering oncoupling half (11).

Remove dust caps (12) fromslave hoses.

Push male coupling half (7)of slave hose into femalecoupling half (10) of returnhose.

Pull on both hoses to makesure connection is locked.

TA106324

2-151

TM 5-5420-226-10

SLAVING HYDRAULIC SYSTEM-Continued

f . Push female coupling half(6) of slave hose on malecoupling half (9) of pumpoutlet.

g. Pullsure

on slave hose to makeconnection is locked.

h. Start engine (page 2-100).

i. Pull up clutch lever (1).

Depress acce lerator (13)until engine is running 1,800rpm.

Raise accelerator lock lever(14).

2-152

TA106325

119

page 2-106

page 2-111

TM 5-5420-226-10

b.

c .

Disconnect slave hose malecoupling half (7) from inlethose coupling half (8).

Remove protective coveringand connect inlet hosecoupling half (8) to pumpoutput coupling half (9).

Pull on inlet hose to makesure connection is locked.

TA106326

2-153

TM 5-5420-226-10

e.

f.

g.

h.

8. On

a.

b.

c .

Disconnect slave hosefemale coupl ing hal f (6 )from valve outlet couplinghalf (11).

Remove protective coveringand connect return hosecoup ling half (10) to valveoutlet coupling half (11).

Pull on return hose to makesure connection is locked.

Wipe up any spilledlic fluid.

operating vehicle:

hydrau-

Disconnect slave hose malecoupling half (7) from returnhose coupling half (10).

Remove protective coveringand connect return hosecoupling half (10) to valveoutlet coupling half (11).

Pull on return hose to makesure connection is locked.

d. Disconnect slave hosefemale coupl ing hal f (6 )from pump outlet malecoupling half (9).

2-154

TA106327

TM 5-5420-226-10

SLAVING HYDRAULIC SYSTEM - Continued

9.

10.

11.

12.

e.

f .

g.

Remove protective coveringand connect inlet hosecoupling half (8) to pumpoutput coupling half (9).

Pull on inlet hose to makesure connection is locked.

Wipe up sny spilled hydrau-lic fluid.

Clean both slave hoses usingsolvent (item 32, app D).

Dry hoses thoroughly.

Install dust caps (12) on slave hoses.

Stow a slave hose in the left rear fender stowage box (5) of eachvehicle.

TA106328

2-155

RREMOVING/INSTALLING ESCAPE HATCHTM 5-5420-226-10

REMOVAL

CAUTIONEscape hatch should beoperated only for emer-gency exit from vehicle.Hatch weighs about 125pounds and will fall t oground when released.

1. Push latch lever (1) to left.

2. Hatch (2) will drop from hull.

INSTALLATION

Notify organizational maintenanceto install hatch (2) or use emer-gency installation procedures asfollows:

1. Check seal (3) for wear, rot, orcracks. If seal is defective,notify organizational mainte-nance.

2. Check that seal (3) is seated ingroove.

3. Push latch lever (1) to left.

4. Position hatch (2) on jack (4).

2-156

TA106329

TM 5-5420-226-10REMOVING/INSTALLING ESCAPE HATCH - Continued

5.

6.

7.

8.

9.

10.

Position hatch and jack underhull opening.

Raise jack until hatch is inopening.

Aline hatch (2) with hullopening. Make sure lip (5) issecure to hull.

Push latch lever (1) to right.

Insure that both plungers (6)engage lugs in hull.

Lower jack and remove.

TA106330

2-157

TM 5-5420-226-10

OPERATING ENGINE SMOKE GENERATOR

Do not activiate smoke generator when engine is idling. Engine speedshould be at least 1,600 rpm.

Engine should be run a while after smoke system is shut downexhaust.

1.

2.

Start engine and bring it up to operating temperature.

to clear

Lift cover (1) and place SMOKE GENERATOR switch (2) on. Light(3) should come on. (The left and right exhaust pipes should emitwhite smoke).

3. Set SMOKE GENERATOR switch (2) to OFF to stop producing smoke.

2-158

TM 5-5420-226-10

1.

2.

Set MASTER BATTERY switch (1)to ON.

Put on and adjust M25A1protective mask (not part of filterunit). See TM 3-4240-280-10.

Slide spring clip (2) from air intakeopenings on precleaned andparticulate filter unit assembly (3).

Change 6 2-159

TM 5-5420-226-10

OPERATING GAS-PARTICULATE FILTER UNIT - Continued

6. Connect hose (5) to M25A1 protective mask canister

2-160 Change 6

OPERATING GAS PARTICULATE FILTER UNIT -

TM 5-5420-226-10

Continued

Change 6 2-160.1/(2-160.2 blank)

TM 5-5420-226-10

GAS AND PARTICULATE FILTER CHANGE CRITERIA

For your maximum safety, it is vital that the gas and particulate filtersof the filter unit M8A3 be fully serviceable. You are responsible fornotifying organizational maintenance when one or more of the followingconditions exist. They are responsible for changing filters whennotified.

1. Conditions for M12A1 gas filter replacement:

a. Physical damage or water immersion.

b. Low air flow to the masks, determined not to be caused byincorrect hose connections or low electrical power.

c. At beginning of combat conditions when the use of CK(Cyanogen Chloride) or AC (Hydrogen Cyanide) is expected.

d. As soon as possible after each AC or CK attack.

e. 5,000 mile vehicle overhaul (peacetime).

f. 1,500 hours of vehicle operation (approximately 5 months,wartime).

2. Conditions for M13 particulate filter replacement:

a. Physical damage.

b. The M12A1 gas filter is changed.

c. The particulate filter becomes clogged, resulting in insuffi-cient air flow.

Change 6 2-161

TM 5-5420-226-10

REMOVING/STOWING/INSTALLING HEADLIGHT

REMOVAL AND STOWAGE

1. Unscrew nut (1).

2. Pull headlight (2) upwardrem ove from outside mount

to(3).

BEHIND COMMANDER’S SEAT

BEHIND OPERATOR’S SEAT

3. Unscrew caps (4) from insidestowage mounts (5).

4. Position headlight (2) on insidestowage mount (5) and securewith nut (1).

5. Install caps (4) on outsidemounts (3).

2-162

TM 5-5420-226-10

INSTALLATION

2.

3.

4 .

5.

Remove caps (4) from outsidemounts (3).

Install caps (4) on inside stow-age mounts (5).

Install headlights (2)headlight downwardnector on mount (3).

Thread nut (1) ontoand tighten nut until

by pushinginto con-

mount (3)secure.

1. Remove headlights (2) from in-side stowage mounts (5) by un-screwing headlight nut (1).

TA106336

2-163/(2-164 blank)

TM 5-5420-226-10

CHAPTER 3

MAINTENANCE INSTRUCTIONS

Section I. LUBRICATION INSTRUCTIONS

SERVICE INTERVALS-NORMAL CONDITIONS

For safer, more trouble-free operation, see to it that your vehicle is serviced whenit needs it. LO 5-5420-226-12, M48A5 AVLB lubrication order, has been rescind-ed. All crew lubrication tasks have been incorporated into Appendix F and into thePMCS contained in this manual. They are to be performed as required or as a partof crew PMCS. Any reference to LO 5-5420-226-12 must be considered a refer-ence to Appendix F, crew PMCS, or organizational PMCS, and must be performedin accordance with instructions provided in the applicable procedures. All lubrica-tion instructions are mandatory.

SERVICE INTERVALS-UNUSUAL CONDITIONS

Your vehicle will require extra service and care when you operate under unusualconditions. High or low temperatures, long periods of hard use, or continued usein sand, water, mud, or snow will break down the lubricant. Then you have to addor change lubricant more often. But during long periods when the vehicle isn’tused, service intervals can be stretched.

Section Il. TROUBLESHOOTING

The way you operate and maintain your vehicle will determine how often you’llhave to use the troubleshooting section.

Pages 3-2 through 3-22 list common malfunctions which you may find duringoperation or maintenance of your vehicle or its components. You should performtest/inspections and corrective actions in the order listed.

This manual cannot list all malfunctions that may occur, nor all tests or inspec-tions and corrective actions. If a malfunction is not listed or is not corrected bylisted corrective actions, notify your supervisor.

If the corrective action requires lubrication or oil, refer to Appendix F or notifyorganizational maintenance.

Change 8 3-1

TM 5-5420-226-10

TROUBLESHOOTING - Continued

MALFUNCTIONTEST OR lNSPECTION

CORRECTIVE ACTION

ENGINE

1. ENGINE DOES NOT CRANK WHEN STARTER SWITCH ISDEPRESSED

Step 1. Move shifting control lever from park to reverse andback to park. Attempt to start vehicle. If vehicle doesnot start, go to step 2.

Step 2. Remove battery cover assemblies (1) (page 3-40).Visually check to see if battery terminals (2) and cables(3) are corroded or damaged.

If cables are corroded or damaged, notify organizational mainte-nance.

3-2

TM 5-5420-226-10

TROUBLESHOOTING - Continuedd

MALFUNCTIONTEST OR INSPECTION

CORRECTIVE ACTION

1. ENGINE DOES NOT CRANK WHEN STARTER SWITCH ISDEPRESSED - Continued

Step 3.

Step 4.

Step 5.

a.

b .

Visually check for broken or loose battery connections andposts.

If connections are loose, notify organizational maintenance.

Check to see if battery water level is above top of plates(page 3-40).

If water level is low, add water (page 3-40).

Slave start vehicle (page 2-139).

Allow engine to run 15 minutes to charge batteries.

If engine does not start or batteries do not charge, notifyorganizational maintenance.

2. ENGINE CRANKS BUT DOES NOT START

Step 1. Pump purge handle (2) until you feel back pressure.

Air will be purged from fuel lines.

Step 2. Start engine (page 2-100).

If engine does not start, go to step 3.

3-3

TM 5-5420-226-10



CORRECTIVE ACTION

2. ENGINE CRANKS BUT DOES NOT START - Continued

CAUTION

Do not hold manifold heater switch (1)longer than 15 seconds. Holding manifoldheater switch more than 15 seconds candamage manifold heaters

NOTE

If temperature is less than 40%, tostep 3. If temperature is shove 40F, goto step 4.

Step 3. While depressing starter switch, press and hold manifoldheater switch (1) and pump purge handle (2) for 15 seconds.

If engine does not start, go to step 4.

3-4

106

TM 5-5420-226-10


CORRECTIVE ACTION

2.

3.

ENGINE CRANKS BUT DOES NOT START - Continued

Step 4. Operate fuel shutoff handle (1) three times. Push fuelshutoff handle in and start engine.

If engine does not start, notifyorganizational maintenance.

DARK OR BLACK SMOKEDOORS (AFTER WARMUP)

BLOWING THROUGH REAR GRILLE

TA106341

3-5

TM 5-5420-226-10



CORRECTIVE ACTION

3. DARK OR BLACK SMOKE BLOWING THROUGH REAR GRILLEDOORS (AFTER WARMUP) - Continued

Step 1. Feel rear grille doors (1) to check for oil.

If oil is present, notify organizational maintenance.

Step 2. Check engine oil level (page 2-51).

a. If engine oil level is too high (overfull), notify organizationalmaintenance.

b. If engine oil level is correct, perform steps 2, 3, and 4 ofMalfunction 4, Engine Runs Rough or Does Not Idle ProperlyAfter Warmup.

TA106342

3-6

TM 5-5420-226-10



CORRECTIVE ACTION

4. ENGINE RUNS ROUGH OR DOES NOT IDLE PROPERLY (AFTERWARMUP)

CAUTION

Do not push manifold heater switch (1)while operating purge pump handle (2) instep 1. This may damage the intakemanifold.

Step 1. Pump purge pump handle (2) until back pressure is felt.

If engine stil l does not run properly, shut down engine(page 2-106).

3-7

TM 5-5420-226-10



CORRECTIVE ACTION

4. ENGINE RUNS ROUGH OR DOES NOT IDLE PROPERLY(AFTER WARMUP) - Continued

Step 2.

NOTEAVLB vehicles may not beequipped with air restrictionindicators. If the vehicle doesnot have air restrictionindicators, go to step 3.

Visually check both air cleaner air restriction indicators(1), if equipped, for condition of air cleaner filters.

a. If the air cleaner is equipped with restriction indica-tor (2), attempt to reset the restriction indicator bypushing reset button.

(1) If indicator shows a red band after resetting,notify organizational maintenance for service.

(2) If both indicators are showing clear, go to step4.

b. If the air cleaner is equipped with restriction indica-tor (3) and indicates a reading of 30 inches or more,as shown by the red disc, the filter elements need tobe cleaned; notify organizational maintenance.

3-8 Change 2

TM 5-5420-226-10


MALFUNCTIONTEST OR Inspection

CORRECTIVE ACTION

4. ENGINE RUNS ROUGH OR DOES NOT IDLE PROPERLY (AFTERWARMUP) - Continued

Step 3. For vehicles without air restriction indicators, removeair cleaner fi lters and check them for dirt orobstructions (page 3-50).

If air cleaner filters are dirty, service air cleaners (page 3-50).

Step 4. Check engine air intakes (1) inside crew compartment orthrough top deck grille doors for obstruction.

a. Remove any foreign material obstructing intake air andstart engine (page 2-100).

b. If engine does not run properly, notify organizationalmaintenance.

TA106345

3-9

106

TM 5-5420-226-10


CORRECTIVE ACTION

5. POWERPLANT WARNING LIGHT COMES ON WHILE ENGINE ISRUNNING ABOVE 750-800 RPM

Step 1. Check right and left top deck grille doors to see if anythingis blocking airflow.

If grille doors are obstructed, remove obstruction.

Step 2. Check engine and transmission o i l coo ler screens forobstruction by dirt, leaves or other foreign material(page 2-54).

I f obstruct ion i s found, remove . I f unable to removeobstruction, notify organizational maintenance.

Step 3.

a.

b.

3-10

Check engine and transmission oil levels (LO 5-5420-226-12).

If engine or transmission oil is low, add oil (LO 5-5420-226-12).

If powerplant warning light comes on, notify organizational maintenance.

TA106346

TM 5-5420-226-10



CORRECTIVE ACTION

5. POWERPLANT WARNING LIGHT COMES ON WHILEENGINE IS RUNNING ABOVE 750-800 RPM - Continued

Step 4. Check DUST DETECTOR WARNING LAMP (1) (if equipped).

a. If lamp is on, stop vehicle.

b. Open grille doors and check both dust detectorpressure switches (2).

c . A red plunger (3), visible through plastic cover on switch body,indicates switch (2) has tripped.

d. If switch (2) has tripped, notify organizational maintenance.

Change 2 3-10.1/(3-10.2 blank)

TM 5-5420-226-10



CORRECTIVE ACTION

BRAKES

6. PARKING BRAKE DOES NOT RELEASE

Step 1. With transmission shift lever in P (park), depress brake pedal(1) and increase brake pressure to 1000 psi on brake pressuregage (2), and shift transmission to N (neutral).

If parking brake does not release, go to step 2.

Step 2. Remove transmission shroud (page 2-143).

Step 3. With transmission shift lever in (neutral), manually prybellcrank (3) (without forcing) and listen for brakes torelease.

a. If parking brakes release, continue to operate and notifyorganizational maintenance.

b. If brakes do not release, notify organizational maintenance.TA106347

3-11

106

TM 5-5420-226-10


CORRECTIVE ACTION

7.

8.

VOLTAGE REGULATOR

BATTERY/GENERATOR INDICATOR POINTER IS IN YELLOW OR LEFT RED WHEN ENGINE IS RUNNING

Step 1. Increase engine speed to 1600 rpm and watch for pointer to move toward green.

a. If pointer moves to green, continue operation and notifyorganizational maintenance.

b. If pointer does not move to green, stop engine (page 2-106)and notify organizational maintenance.

BATTERY/GENERATOR INDICATOR POINTER IS IN RIGHT REDWHEN ENGINE IS RUNNING

Step 1. Check batteries (1) by touching battery case to see if theyare hot or boiling.

If batteries are hot, stop engine (page 2-106) and notifyorganizational maintenance.

3-12

TM 5-5420-226-10



CORRECTIVE ACTION

Step 3. Check that all electrical connectors (3) in both right andleft headlight harness assemblies (4) are connected.

If not connected, connect.

Step 4. Operate lights and see if they work.

If lights do not work, replace bad lamps (page 3-41).

3-13

143

TM 5-5420-226-10



CORRECTIVE ACTION

9.

10.

SERVICE DRIVE HEADLIGHT, IR BLACKOUT DRIVE LIGHT ORBLACKOUT MARKER LIGHT DOES NOT WORK - Continued

Step 5. Operate service drive headlights, IR headlights, blackoutdrive light or blackout marker light.

If lights do not work, notify organizational maintenance.

SERVICE DRIVE TAILLIGHT, SERVICE STOPLIGHT OR BLACKOUT

Step 2. Check non-operational taillight assembly electricalconnectors (1) to be sure they are properly connected.

Secure any loose connectors.

3-14

TM 5-5420-226-10



CORRECTIVE ACTION

10. SERVICE DRIVE TAILLIGHT, SERVICE STOPLIGHT OR BLACKOUTMARKER LIGHT DOES NOT WORK - Continued

Step 3. Operate lights and see if they work.

a. If lights do not work, replace bad lamps (page 3-42).

b. If taill ights st i l l do not work , not i fy organizat ionalmaintenance.

STEERING

11. VEHICLE LEADS TO RIGHT OR LEFT ON FLAT ROAD

Step 1.

a.

b.

Check track tension adjustment (page 3-23).

If adjustment is not as specified, adjust track tension (page3-23).

If adjustment is correct, notify organizational maintenance.

TA106351

3-15

TM 5-5420-226-10


CORRECTIVE ACTION

PERSONNEL HEATER

12. PERSONNEL HEATER STARTS, RUNS SHORT TIME, STOPS

NOTE

The HEATER MASTER switch (1) shouldalways be set to ON. If heater wasturned OFF with HEATER MASTERswitch (1) or operated less than 5 minutesit may not restart because of flooding.

Step 1. Check blower air inlet (2) and airflow ducts (3) for anythingblocking airflow.

Remove anything blocking airflow.

3-16

TA106352

TM 5-5420-226-10


MALFUNCTIONTEST OR INSPECTTON

CORRECTIVE ACTION

12. PERSONNEL HEATER STARTS, RUNS SHORT TIME, STOPS -(Continued) Continued

Step 2. Check personnel heater exhaust tube (1) for anything

Step

13.

3. Attempt to start heater (page 2-92).

If heater does not run, notify organizational maintenance.AUXILIARY SYSTEMS AND CONTROLS

DRIVER CANNOT SEE CLEARLY THROUGH M24 IR PERISCOPE -PINK LIGHT BACKGROUND - NO CLEAR IMAGE (PICTURE)

3-17

TM 5-5420-226-10


MALFUNCTIONTEST OR INSPECTTON

CORRECTIVE ACTION

13. DRIVER CANNOT SEE CLEARLY THROUGH M24 IR PERISCOPE -PINK LIGHT BACKGROUND - NO CLEAR IMAGE (PICTURE) -(Continued)

Step 1. Set IR POWER switch and MASTER BATTERY switch toOFF. Wait 2 minutes.

Step 2. Disconnect power cable and remove periscope from hatchcover.

If exterior lenses are dirty, clean with lens tissue or soft, cleancloth and lens cleaning compound (item 12, app D).

Step 3.

a.

b.

c.

Step 4.

Step 5.

a.

b.

3-18

Remove periscope head from periscope (page 3-49) andcheck interior lenses for dirt and the presence of lensprotective masking paper.

If dirty, clean with lens tissue or soft, clean cloth and lenscleaning compound (item 12, app D). Install periscope head(page 3-49).

If lens protective masking paper is present, remove.

If clean, install periscope into hatch cover.

Connect IR power cable to the periscope and set MASTERBATTERY switch and NIGHT VISION switch to ON.

Check to see if periscope is focused.

If not focused, adjust focus (page 2-94).

If persicope focus will not adjust, notify organizationalmaintenance.

TA106354

TM 5-5420-226-10



CORRECTIVE ACTION

14. DRIVER CANNOT SEE THROUGH M24 IR PERISCOPE - NO PINKLIGHT BACKGROUND

Step 1.

Step 2.

a.

b.

Step 3.

a.

b.

Step 4.

If

Set NIGHT VISION switch and MASTER BATTERY switch toOFF. Wait 2 minutes.

Grab power cable below connector with one hand. Pushcable up, then pull down.

If cable moves, tighten cable.

If cable does not tighten, go to step 3.

Remove cable and check for dirt or damaged connector onperiscope or cable.

If dirty, clean with a brush (item 6, app D) and connectcable.

If damaged, notify organizational maintenance.

Set MASTER BATTERY and NIGHT VISION switches to ON.

there is no pink light background, notify organizationalmaintenance.

3-19

52.1

TM 5-5420-226-10


CORRECTIVE ACTION

14.1 DRIVER’S NIGHT VISION VIEWER DOES NOT OPERATE ONBATTERY POWER (VIEWER OPERATES ON VEHICLE POWER).

Step 1.

Step 2.

Step 3.

Step 4.

Check if vehicle power cable is attached to night visionviewer (page 3-52.1).

If attached, place NIGHT VISION power switch in OFFposition, wait 2 minutes and disconnect vehicle cable.

Place night vision viewer OFF/BRIGHT rotary switch inOFF position. Check if battery is installed and isinstalled with positive (+) end first in night vision viewer.

Night vision viewer battery may be discharged.

Replace battery for test (page 3-52.2).

Check for corrosion or dirt on battery contacts, contactin night vision viewer, or contact in battery compartmentcap.

If dirty, clean contacts.

14.2 DRIVER’S NIGHT VISION VIEWER DOES NOT OPERATE ONVEHICLE POWER (VIEWER OPERATES ON BATTERY POWER).

CAUTION

Remove battery (page 3-52.1) beforeconnecting vehicle power cable tonight vision viewer.

3-20 Change 2

TM 5-5420-226-10



CORRECTIVE ACTION

14.2 DRIVER’S NIGHT VISION VIEWER DOES NOT OPERATE ONVEHICLE POWER (VIEWER OPERATES ON BATTERY POWER) -Continued

Step 1.

Step 2.

Step 3.

Check if MASTER BATTERY and NIGHT VISION powerswitches are ON.

If not, place both switches ON.

Check if vehicle power cable is loose or not connected tonight vision viewer (page 3-52.1).

If not connected, place NIGHT VISION power switchOFF, and connect vehicle power cable to night visionviewer.

Place NIGHT VISION power switch OFF, and disconnectvehicle power cable from night vision viewer. Check forcorrosion or dirt on cable or viewer contacts.

If dirty, clean contacts.

14.3 DRIVER’S NIGHT VISION VIEWER DOES NOT OPERATE ONVEHICLE POWER OR BATTERY POWER.

Step 1. Check if outside lens cover is installed. If installed,remove (page 2-94.2).

Step 2. Check if outside conditions are too bright. If terrain orsky is too bright, driver’s night vision viewer will auto-matically shut off. Point viewer at dark scene.

Step 3. Check if OFF/BRIGHT rotary switch is set to OFF. Ifoff, rotate switch to maximum BRIGHT position.

Change 2 3-20.1

52.1

TM 5-5420-226-10



CORRECTIVE ACTION

14.4 DRIVER’S NIGHT VISION VIEWER PICTURE QUALITY IS POOR.

Step 1. Check if OFF/BRIGHT rotary switch is adjustedproperly.

If not, rotate to maximum BRIGHT position and reducebrightness for best image.

Step 2. Check if lenses are dirty or fogged.

If yes, clean outside lens and eyepiece lens (page 2-94.2).

Step 3. Check if picture quality is better using vehicle powerthan when using battery power.

If yes, replace battery (page 3-52.2).

3-20.2 Change 2

TM 5-5420-226-10



CORRECTIVE ACTION

15. SMOKE GENERATOR WILL NOT WORK (NO SMOKE OR QUANTITYOF SMOKE IS NOT NORMAL)

Step 1. Check that smoke generator manual fuel shutoff valve isopen. (Top of engine - right side).

Step 2. If smoke generator lamp (1) does not come on, notifyorganizational maintenance.

Change 2 3-20.3/(3-20.4 blank)

TM 5-5420-226-10


CORRECTIVE ACTION

16. LACK OF AIR GAS-PARTICULATE FILTER UNIT

17.

18.

Step 2.

Step 1. Make sure spring clip (1) has beenopening on filter unit (2).

If not, lift from air intake opening.

lifted from air intake

If connector is loose, tighten.

Step 3. Check if precleaned andlistening for motor noise.

filter unit motor is operating by

If motor is not running, notify organizational maintenance.

BRIDGE FAILS TO LIFT OFF BRIDGE SEAT OR FAILS TO LIFTWHEN RETRIEVING BRIDGE

Step 1. Check clutch and make sure it is fully engaged.

Step 2. Check for low level in hydraulic reservoir (page 2-28).

a. If hydraulic fluid is low, refill and repeat launching orretrieving procedures (pages 2-111 and 2-119, respectively).

b. If hydraulic fluid level is correct and bridge will not raise,notify organizational maintenance.

BRIDGE FAILS TO OPEN DURING LAUNCHING OR FAILS TOCLOSE WHEN RETRIEVING

Step 1. Check for low level in hydraulic reservoir (page 2-28).

If hydraulic fluid is low, refill and repeat launching orretrieving procedures (pages 2-111 and 2-119, respectively).

TA106357

3-21

TM 5-5420-226-10



CORRECTIVE ACTION

18. BRIDGE FAILS TO OPEN DURING LAUNCHING OR FAILS TOCLOSE WHEN RETRIEVING - Continued

Step 2 Check that quick disconnect couplings (1) are properlyconnected (page 2-122).

Step 3. Check for open valves (2) on bridge scissors cylinder (3).

If valves are open, close. If bridge still fails to open or close,notify organizational maintenance.

19. LAUNCHER DOES NOT ENGAGE BRIDGE DURING RETRIEVING

Step 1. Check if ejection cylinder plugs (4) retract.

If ejection cylinder plugs did not retract, notify organizationalmaintenance.

20. LAUNCHER DOES NOT RELEASE BRIDGE

Step 1. Check that locking cylinder plugs (5) did retract.

If locking cylinder plugs did not retract, notifymaintenance.

organizational

3-22

Section III.TM 5-5420-226-10

1. Move vehicle forward on level hard surface and coast to a stopwithout applying brakes. Remove dirt and mud from outboard endconnectors between support rollers in area to be measured.

NOTE

Vehicles are fielded with three and five support rollers. Perform step 2only if vehicle has three support rollers, and step 3 only if vehicle has fivesupport rollers.

b. Measure distance between the string and end connector midwaybetween the front and center support rollers.

Change 6 3-23

TM 5-5420-226-10

a.

b.

c.

3-24

Loosen track adjustinglockscrew (2) with handleand 9/16 inch socket.

Using wrench (3) (item 63,sec III, app B) on adjustinglink (1), pull upward to in-crease or downward to de-crease track tension (rightside of vehicle).

Reverse directions for leftside.

Change 6

Measurement must be between 3/8and 9/16 inch (9.5 and 14.3 mm).

CAUTIONWhen adjusting tracktension, do not extendtrack adjusting link (1)beyond red painted groove,because in operation notenough threads would beleft to support the load andadjusting link could bedamaged.

95

TM 5-5420-226-10

5. If track tension is still too loose, remove one track link (page 3-29).Then adjust for required clearance (page 3-24).

3-25

TM 5-5420-226-10

D I S C O N N E C T I N G T R A C K -C o n t i n u e d

2. Loosen track adjusting linklockscrew (3).

3. Using wrench (4) (item 63, secIII, app B), loosen track tension.Pull upward to loosen track onleft side or push downward onright side.

4. Using handle (item 29, sec III,app B) and 15/16 inch socket,loosen wedge bolt (5) two turns.Rap wedge bolt (5) withhammer to loosen wedge (6).Remove bolt (5) and wedge (6)from end connector (7).

5. Install end connector puller (8)(item 45, sec III, app B) onconnector (7).

end

6.

7.

8.

Using handle (item 29, sec III,app B) and 1-1/2 inch socket,tighten puller screws (9) againstends of track link pins (10), andrap puller screw heads withsledge hammer.

Turn puller screws (9) alter-nately to keep end connector(7) moving squarely until itmoves approximately 1 inch onlink pins. Repeat procedure foropposite side of track end con-nector.

Position track connecting fix-ture (11) (item 19, sec III, appB) on link pins (10) and usinghandle (item 29, sec III, app B),tighten until hooks (12) clampover pins. Repeat procedurefor opposite side of track.

3-26

sec III app B

sec III app B

(page 3-29).

TM 5-5420-226-10

9. Tighten end connector pullerscrews alternately to remove

-end connectors. Repeat pro-cedure for oppos i te s i d e o ftrack.

10.

11.

2.

3.

Using 1-5/16 inch socket,remove centerguide nut (13).Rap centerguide (15) with asledge hammer to loosen fromt r a c k l i n k p i n s . Removecenterguide (15), cap (16), andbolt (17).

While supporting track with acrowbar, loosen track connec-ting fixtures (11) alternatelyuntil track link pins separateabout 3 inches and trackf i x t u r e s c a n b e removed.Lower track to ground andremove crowbar.

3 - 2 7

sec III app B

TM 5-5420-226-10

track links are in a straight line(same plane). Tighten center-

9. Adjust track tension (page 3-23).

guide nuts (12). TA106364

3-28

TM 5-5420-226-10

REMOVING TRACK LINK

1.

2.

3.

4 .

5.

Disconnect track (page 3-25) at link (1) to be removed.

Using 15/16 inch socket and T-handle, loosen both end connectorwedge bolts (2) on both sides of track link to be removed. Rap bolts(2) with sledge hammer (item 23, sec III, app B) to loosen wedges (3).Remove bolts (2) and wedges (3).

Install end connector puller (4)(item 45, sec III, app B) on endconnector (5). Using 1-1/2 inchsocket, tighten puller screws (6)against ends of link pins (7).Rap pul ler screws (6 ) wi th sledge ham mer. Turn puller screws (6) alternately and keepend connector ( 5 ) m o v i n gsquarely until removed fromlink pins (7). Repeat procedurefor opposite end connector.

Using 1-5/16 inch socket and T-handle, remove nut (8) fromcenterguide bo l t (9 ) .centerguide (10) with sledgehammer, if necessary, to loosenfrom link pins (7). Removecenterguide (10).

Remove track link (1).

TA106365

3-29

TM 5-5420-226-10

5.

6.

Move vehicle rearward and stopwhen newly installed end con-nectors are just starting overcompensating idler wheel (11).Using 15/16 inch socket and T-handle , t ighten wedge bo l ts(10).

Move vehicle forward and stopwhen newly installed centerguide is accessible and adjacenttrack links are in a straight line(same plane). Using 1-5/16 inchsocket and T-handle, tightencenterguide nut (6).

3.

4.

Using sledge hammer (item 23,sec III, app B) drive endconnector (7) fully onto trackpins (8).

Position wedge (9) into under-s i d e o f end connector (7).Secure with bolt (10). Repeatprocedure for opposite side oftrack.

Connect track (page 3-27).

7. As soon as possible, have orga-niz ational maintenance torquewedge bolts (10) and center-guide nut (6).

3-30

TA106366

1. Removal:

a. Loosen track tension (page 3-23).

TM 5-5420-226-10

b. Remove nut (1) from center guide (2) using 1-5/16 inch socket andextension. If necessary, tap centerguide bolt (3) with hammer(item 23, sec III, app B) to loosen from track link pins. Removecap (4) and centerguide assembly.

2. Installation:

Install centerguide cap (4), centerguide (2), and bolt (3) in place.Tighten nut (1) using 1-5/1 6 inch socket and extension.

TA106367

3-31

TM 5-5420-226-10

1.

2.

Removal:

a. Position pad to be removed between compensating idler wheel (1) and number 1 roadwheel (2).

b. Remove track pad nut (3) using 1-1/8 inch socket and T-handle. If necessary, tap pad stud (4) with hammer (item 23, sec III, app B),and remove pad (4) from track link (5).

Installation:

Position track pad (4) in link (5), and secure nut (3) with 1-1/8 inchsocket and handle to stud (6).

TA106368

3-32

25

TM 5-5420-226-10

REPLACING THROWN TRACK

2.

3.

4.

5.

6.

7.

8.

With roadwheels (1) on ground,lay track (2) at front or at rearof vehicle in-line with road-wheels.

Place a heavy metal plate orsturdy wood plank (3) overtrack link nearest vehicle toform a ramp. If not available,dig a trough under first fewtrack links until upper surfaceis level with ground.


Carefully move vehicle ontotrack (2) until number 6roadwheel (4) is resting on the16th track link (5) from rear oftrack.

Set vehicle parking brakes(page 2-95) and stop engine(page 2-106).

Secure a rope (item 30, app D) tocenter of link pin (6) at rear ofreplacement track.

Pass rope over centerguidegroove (7) of drive sprocket (8)hub, around and between rearsupport roller wheels (9), andback under and around (twoturns) outer surface of hub. Pulland hold free end of rope tight.

Change 6 3-33

TM 5-5420-226-10

REPLACING THROWN TRACK - Continued

9. Start engine. Let engine idle. Release parking brake (page 2-95).Position steering control for left pivot steer for right trackinstallation or right pivot steer for left track installation.

10. While holding free end of rope (10) tight, speed engine enough to slowlyrotate drive sprocket (11). When sprocket teeth (11) have engaged threetrack links, apply parking brakes (page 2-95) and stop engine (page 2-106).

11.

11.1.

12.

13.

14.

15.

Remove rope from around sprocket and rear support roller. Withrope still secured to track link pin, pass rope forward over andbetween all five (or three) dual support rollers (12) and compensatingidler wheel.

Start engine, warm up. and let idle (page 2-100).

With engine idling, release parking brake (page 2-95) and move shiftlever to L (low) (page 2-97). Hold rope tight and walk in front andslightly to one side of vehicle. Speed engine enough to move trackover support rollers and compensating idler wheel.

When track is over compensating idler wheel and tight around drivesprockets, apply brakes (page

Remove rope from track.

Connect track (page 3-27).

2-95). Stop engine (page 2-106).

3-34 Change 6

TM 5-5420-226-10

3. Insert hose into opening. Allow for fuel expansion by filling to about6 inches below opening (approximately 385 gallons for completerefill). Remove any spilled fuel immediately.

4. Remove hose. Replace filler cap (4) and turn 1/4-turn clockwise totighten.

5. Position and lower cover (3). Secure with lockpin (2). Using 15/16inch wrench, secure lockpin with lockscrew (1).

R e m o v e f u e l f i l l e r c a p ( 1 )according to steps 1 and 2 inabove instruction.

Using pliers (item 44, sec III,app B), remove vent cap (2)f rom f i l l er cap (1 ) expos ingrelief vent (3).

Remove chain (4) from base offuel filler cap (1).

3-35

TM 5-5420-226-10

SERVICING FUEL FILLER CAP - Continued

4.

5.

6.

7.

8.

9.

10.

11.

3-36

Inspect vent cap and screen (5) inside of vent cap (2) for foreignparticles.

Clean in solvent (item 32, app D), if necessary.

With vent cap (2) removed, inspect fuel filler cap (1) float and ball operation as follows:

a. With fuel filler cap (1) right-side up, floatin relief vent (3).

b. With fuel filler cap (1) upside-down, floatin relief vent (3).

c. If float is not visible, notify organizational

p o i n t s h o u l d n o t a p p e a r

point should be visible

maintenance.

Manually press vent cap (2) intofiller cap (1).

Reconnect chain (4) to base offiller cap (1).

Position cap (1) on filler neck(6) and turn l/4-turn clockwise.

Close cover (7) and insert lockpin (8).

Using 15/16 inch wrench,tighten lockscrew (9).

TA106372

TM 5-5420-226-10

1. Using 15/16 inch wrench, loosenlockscrew (1) and open left topdeck grille doors (2) for accessto le f t fue l tank emergencyfuel filler cover (3).

5.

6.

7.

8.

9.

10.

3.

4.

Using pliers (item 44, sec III,app B), remove lockwire (4).

Using 7 /16 inch socket andratchet (item 28, sec III, app B),remove eight screws andwashers (5).

Remove f i l l er cover (3 ) andgasket (6) from left fuel tank(7).

Insert fuel hose into filler opening and refuel. Remove any spilledfuel immediately.

Remove fuel hose. Manually secure filler cover (3) and gasket (6)with eight screws and washers (5).

Using 7/16 inch socket, tighten eight screws (5).

Have organizational maintenance install lockwire (4) as soon aspossible.

Close top deck grille doors (2).

Using 15/16 inch wrench, tighten lockscrew (1).TA106373

3-37

TM 5-5420-226-10

ISOLATING FUEL TANKS

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Using 9 /16 inch socket andratchet (item 28, sec III, app B),remove six stews and washers(1) from cover (2).

Manually remove cover (2).

Using flat-tip screwdriver (item46, sec III, app B), remove 12screws (3) from access cover(4).

Using pliers (item 44, sec III, app B), remove lockwire (5) from fueltank crossover butterfly valve (6) and collar (7).

Rotate collar clockwise as far as possible. Have organizationalmaintenance install lockwire (5) as soon as possible.

Replace access cover plate (4),and manually install 12 screws(3).

Using flat-tip screwdriver,tighten 12 screws (3).

Position cover (2) and manuallyinstall six screws and washers(1).

Using 9/16 inch socket, tightensix screws and washers (1).

Using 1-1/8 inch wrench, re-move four screw assemblies (8)securing rear grille doors (9).Open doors.

3-38

TM 5-5420-226-10

11.

12.

13.

14.

15.

Using 7/16 inch wrench on nuts of clamps, remove clamps (10) andexhaust elbows (11) from exhaust pipes on each side of transmissionshroud (12).Using 3/4 inch wrench, unlock six turnlock assemblies (13) andremove transmission shroud (12). Cover exhaust pipe openings toprevent foreign matter from entering engine.

Pull up on ring (14) and move left side transmission guide (15)rearward for access to fuel selector valve (16).Using pliers, remove lockwire (17). Turn fuel selector valve (16) toeither left or right emergency, as required. Have organizationalmaintenance install lockwire (17) as soon as possible.Raise lock latch (18) and move left side transmission guide (15)forward until it snaps in place.

16.

17.

18.

Remove covers from exhaust pipe openings. Place transmissionshroud (12) on supports and, using 3/4 inch wrench, lock six turnlockassemblies (13).Set exhaust elbows (11) on exhaust pipes at 45-degree angle towardcenter of vehicle and using 7/16 inch wrench on nuts of clamps,install clamps (10).

Close rear grille doors (9) and,using 1-1/8 inch wrench, installscrew assemblies (8).

3-39

TM 9-6140-200-12.

TM 5-5420-226-10

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

Using 9/16 inchwashers (l).Remove retainer

Remove cover (3)

wrench, remove four screws, lockwashers, and

(2).

Remove six caps (4) on each battery (5).

Fill with distilled or clean water, if necessary, to split ring level ineach hole.

Install six caps (4) on each battery (5).

If water was added, start engine. Run engine for 15 minutes to mixelectrolyte with water.

If necessary, clean battery terminals (6) as follows:

a. Wipe with a cloth soaked with a solution of bicarbonate of soda(baking soda) and water.

b. Apply a coat of grease (item 15, app D) to terminals.

Install cover (3).

Install retainer (2).

Using 9/16 inch wrench, secure retainer and cover with four screwslockwashers, and washers (1).

3-40

TA106377

TM 5-5420-226-10

a.

b .

c .


Using flat-tip screwdriver(item 46, sec III, app B),unscrew four captive screws(1).

Remove cover (2) by pullingstraight out from body (3) toavoid damaging guide pin(4).

2. Headlight sealed-beam remov-al:

a.

b.

c .

Remove sealed-beam(s) (5)with seal (6) from body (3).

Disconnect connector (7).

Remove seal (6) fromsealed-beam.

3. Remove blackout drive lamp (8)(item 19, app D) or blackoutmarker lamp (9) (item 22, appD) by pressing in and turningcounterclockwise. Replace byalining lamp pins with socket,press into socket, turn clock-wise to lock in place.

c. Position sea led-beam inheadlight body.

TA106378

3-41

TM 5-5420-226-10

RERPLACING HEADLIGHT, BLACKOUT DRIVE, AND BLACKOUTMARKER LAMPS - Continued

5. Headlight cover installation:

a.

b.

c.

Wipe IR lens (10), clear lens (11), and blackout lenses with a cleancloth.

Aline guide pin (4) with guide pin hole (12) and push cover in untilseal (13) is firmly seated.

Using screwdriver, secure cover to body with four captive screws.

2.

3.

Set MASTER BATTERY switch to OFF.

Using flat-tip screwdriver (item 46, sec III, app B), unscrew sixcaptive screws (1) and open door (2).

Press in defective lamp for service drive (3), service stoplight (4),blackout marker (5), or blackout stoplight (6), turn counterclockwise, and remove.

3-42

TA106379

TM 5-5420-226-10

4.

5.

6.

Aline replacement lamp (service drive (3), item 22, app D; servicestoplight (4), item 19, app D; blackout marker (5), item 22, app D;and/or blackout stoplight (6), item 22, app D) pins with socket, presslamp in, and turn clockwise to lock.Wipe lenses and door (2) with a clean cloth.

Install door (2) and, using screwdriver, secure with six captive screws(1). Make sure seal is seated properly.

1.

2.

3.

4.

5.

6.

Set MASTER BATTERY switch to OFF.

Using flat-tip screwdriver (item 46, sec III, app B),captive screws (1) and remove door (2) from body (3).

Press defective lamp in andturn count erclockwise t oremove.

Aline new large lamp (item 20,app D) and/or small lamp (item18, app D) pins with socket,press lamp in, and turnclockwise.

Wipe lenses and door (2) with aclean cloth.

Install door (2) on body (3) andusing screwdriver, secure witheight captive screws (1). Makesure seal (4) is seated properly.

unscrew eight

TA106380

3-43

TM 5-5420-226-10

REPLACING LAMP - MASTER CONTROL PANEL, SMOKE GENER-ATOR, AND POWERPLANT WARNING LIGHTS

NOTE

Master control panel,smoke generator, andpower plant warninglights are replaced inthe same manner. Anadjustable wrenchmay be necessary toloosen the adapters ifthey are tight.

1.

2.

3.

Set MASTER BATTERY switch (1) to OFF.

Remove lens cap (2) from defective master control panel light,SMOKE GENERATOR, or POWERPLANT WARNING l ight asapplicable.

Unscrew adapter (3) with gasket and press defective lamp (4) in.Turn counterclockwise and remove.

4.

5.

6.

Aline master control panel, SMOKE GENERATOR, and/orPOWERPLANT WARNING light new lamp (item 21, app D) and/orpersonnel heater new lamp (item 17, app D) pins with socket, presslamp in, and turn clockwise.

Manually install adapter (3) with gasket.

Install lens cap (2) on adapter (3).TA106381

3-44

TM 5-5420-226-10REPLACING LAMP - DUST DETECTOR WARNING LAMP (IF EQUIPPED)

1.

2.

3.

4.

5.

Set MASTER BATTERY switch (1) toOFF.

Unscrew lens cap (2) from indicatorlamp socket (3).

Remove defective lamp (4) fromsocket (3).

Install replacement lamp (item 16,Appendix D) in socket (3).

Install lens cap (2).

Change 2 3-44.1/(3-44.2 blank)

TM 5-5420-226-10

REPLACING LAMP - INSTRUMENT PANEL CLUSTER ASSEMBLY

1. Set MASTER BATTERY switchto OFF.

2. Remove lens (1) with gasket

3. Press in defective lamp (3)turn counterclockwiseremove.

4. Aline new lamp (3) (item

(2) .

andto

21,app D) pins with socket, presslamp in and turn clockwise.

5. Install lens (1) with gasket (2).

INSTALLING M24 INFRARED PERISCOPE (IF EQUIPPED)

1. Insure that MASTER BATTERY switch is OFF.

2. Close hatch.

3. Pull periscope holder lid handle (1) down, depress lid latch (2) push lid( 3 ) o p e n .

CAUTIONPeriscope could bedamaged if exposed todirect sunlight.

4. Remove periscope from stow-age box (4).

Change 2 3-45

TM 5-5420-226-10

INSTALLING M24 INFRARED PERISCOPE (IF EQUIPPED) - Continued

5.

6.

7.

8.

9.

Release elevation adjustmentlever (5) allowing elevationclamp (6) to pivot.

Using 1/2 inch wrench, loosenjamnut (7) on elevation clamp(6).

Position periscope (8) in peri-scope mount (9) push it up tolock in place. Insure periscopeis locked in place before yourelease it.

Manually tighten adjustment screw (10) on elevation clamp (6) untilclamp is seated firmly in detent (11). Using 1/2 inch wrench, tightenjamnut (7).

Rotate elevation adjustment lever (5) to lock periscope.

10. Unscrew dust cap (12) from periscope receptacle (13).

3-46 Change 2

TM 5-5420-226-10

INSTALLING M24 INFRARED PERISCOPE (IF EQUIPPED) - Continued

11. Remove power cable (14) from stowage receptacle (15).

Change 2 3-47

TM 5-5420-226-10

REMOVING M24 INFRARED PERISCOPE (IF EQUIPPED) - Continued

3.

4.

5.

6.

7.

Disconnect power cab le (3 )from periscope (4).

Connect power cable (3) tostowage receptacle (5).

Install dust cap (6) on periscopepower receptacle (7).

Using 1/2 inch wrench, loosenjamnut (8).

Manually loosen adiustment

8.

9.

10.

11.

screw (9).

Push up on release bar (10) torelease periscope.

Stow periscope (4) in stowagebox (11).Pull down periscope lid handle(12) until lid (13) is latched.

3-48 Change 2

TM 5-5420-226-10

REPLACING M24 INFRARED PERISCOPE HEAD (IF EQUIPPED)

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

Remove periscope from holder.

Stand periscope on padded surface and hold with one hand.

Using flat-tip screwdriver, turn eccentric latches (1) l /2-turncounterclockwise.

Remove head (2).

Remove spare head from stowage box (3).

Install spare head on body (4).

Using screwdriver, secure by turning eccentric latches (1) l/2-turnclockwise.

Install periscope (page 3-45).

Place removed head (2) in stowage box (3).

When appropriate, turn in removed head to organizationalmaintenance.

Change 2 3-49

TM 5-5420-226-10

INSTALLING AN/VVS-2 NIGHT VISION VIEWER (IF EQUIPPED)

NOTE

Driver’s hatch mustbe closed and lockedto install nightvision viewer.

1. Pivot handle (1) fullydownward to raise door (2)above hatch. Then rotatehandle (1) rearward until dooris fully open. Pivot handle(1) upward. Press lever (3)and pull handle (4) down and

3-50 Change 2

TM 5-5420-226-10

INSTALLING AN/VVS-2 NIGHT VISION VIEWER (IF EQUIPPED) -Continued

4 . Rotate mounting plate (9) toposition in detent. Sides ofmounting plate (9) will be inline with sides of viewer (10).

3. Remove snap-on lens cover(8). Stow cover in viewerstowage box.

Change 2 3-51

TM 5-5420-226-10

INSTALLING AN/VVS-2 NIGHT VISION VIEWER (IF EQUIPPED) -Continued

5. Hold viewer (11) in a vertical position and carefully raise viewerhead (12) through hatch (13).

6. Engage front edge of mounting plate (14) with slots (15) at front ofhatch. Then move rear end of mounting plate upward until vieweris vertical.

3-52 Change 2

TM 5-5420-226-10

INSTALLING AN/VVS-2 NIGHT VISION VIEWER (IF EQUIPPED) -

1.

2.

3.

4.

5.

6.

7.

8.

Set NIGHT VISION switch (1)to OFF.

Unscrew battery cap (2) andremove battery, if installed.

Reinstall battery cap (2).

Remove cover (3) fromviewer receptacle (4).

Disconnect power cable (5)from dummy receptacle (6).

Connect power cable (5) toviewer receptacle (4).

Set MASTER BATTERYswitch (7) to ON.

Set NIGHT VISION switch (1)to ON.

Change 2 3-52.1

TM 5-5420-226-10

INSTALLING AN/VVS-2 NIGHTContinued

VISION VIEWER (IF EQUIPPED -

USING BATTERY POWER

1.

2.

3.

4.

5.

If vehicle power cable (5) isconnected to v iewer , setNIGHT VISION switch (1) toOFF.

Disconnect power cable (5)from viewer receptacle (4)and c o n n e c t t o dummyreceptacle (6).

Install cover (3) on connector(4).

Unscrew battery cap (2) andinsert battery (item 4, app.D), recessed positive (+) endfirst (bat tery is stowed inviewer carrying case withone spare).


3-52.2 Change 2

TM 5-5420-202-10

REMOVING AN/VVS-2 NIGHT VISION VIEWER (IF EQUIPPED)

1. If vehicle power was being used, set NIGHT VISION switch (1) toOFF. If battery power was used, remove battery.

Change 2 3-52.3

TM 5-5420-226-10

REMOVING AN/VV-2 NIGHT VISION VIEWER (IF EQUIPPED) -Continued

2.

3.

4.

5.

6.

7.

8.

Rotate OFF-BRIGHT switchknob (2) to OFF.

Disconnect power cable (3)from viewer and connect todummy receptacle (4).

Install viewer receptacle cap(5).

If battery was used, unscrewbattery cap (6). Remove anddiscard battery.


Turn viewer to the straightforward (detent) position.

Install snap-on eyepiececover (7).

10. Install snap-on lens cover(13). Snap-on lens cover isstowed in viewer stowagebox.

9. While supporting viewer withyour left hand, press lever (8)and pull handle (9) rearward(180 degrees) until it locks.Lower rear end of viewer (10)downward to clear lockingplunger (11). Then slideviewer rearward to disengageforward mount (12) andcarefully lower from hatch(weight approximately 18pounds or 8.17 kg).

3-52.4 Change 2

REMOVING AN/VVS-2 NIGHT VISION VIEWERContinued

13.

TM 5-5420-226-10

(IF EQUIPPED) -

Hold handle (16) and then press lever (17) and allow handle (16) torotate down and then forward. Push handle (16) up until lever (17)locks in place.

NOTE

Make sure viewer door seal area isfree of dirt and debris before closingdoor.

Rotate handle (18) counterclockwise until door (19) is over hatchopening. Pivot handle (18) down to drop door (19) into place. Pivothandle (18) up to lock door closed.

Change 2 3-53

TM 5-5420-226-10

TOP DECK GRILLE DOORS OPERATION

OPEN DOORS

1.

2.

3.

4.

5.

Using 15/16 inch wrench, loosentwo screws (1).

Pull on handles and open twogrille doors (2).

Using 15/16 inch wrench, loosentwo screws (3) and remove twobolts (4).

Pull on handlesdoors startingdoors first.

and open grillewith rearmost

Remove forward grille doors (5)by lifting up on handle.

CLOSE DOORS

1.

2.

3.

4.

Using handle, set forward grille door (5) in position.

Close all remaining grille doorsstarting at the front.

Using 15/16 inch wrench, installtwo screws (4).

Using 15/16 inch wrench,tighten four screws (1 and 3).

TA106444

3-54

130.1

page 2-130.6

TM 5-5420-226-10

CLEANING M239 SMOKE GRENADE LAUNCHER DISCHARGERS

Change 1 3-54.1

TM 5-5420-226-10

CLEANING M239 SMOKE GRENADE LAUNCHER DISCHARGERS -Continued

NOTE

Top center barrel drain hole cannot becleaned using steel wire. If drain holeis clogged, notify organizationalmaintenance to clean drain hole usingcompressed air.

2. Using wire (item 36, app D),sure drain holes (4) in barrel

makeare clear.

Do not use wire brush or steel woolto clean barrels. If used, damage tolauncher barrels will occur and couldcause an electrical short of the firingcircuit.

CAUTION

Tip plugs must be clean and dry. Donot oil tip plugs.

4. Using clean, dry rags (item 29, app D),remove all cleaning solution frombarrels. Make sure no residue remainsaround tip plugs (5).

5. Install covers (6) on smoke grenadedischargers (7) (page 2-130.8).

Do not step on dischargers.

Using rags and cleaner (items 29and 7.1) or detergent (item 13.1,app D) and water, clean barrels(3).

3-54.2 Change 6

STOWING SMOKE GRENADES

TM 5-5420-226-10

C h a n g e 1 3-54.3/(3-54.4 blank)

TM 5-5420-226-10

In addition to normal preventive maintenance services, special care incleaning and lubrication of the vehicle must be observed where extremesof temperature, humidity, and terrain conditions are present or antici-pated. You must properly clean and lubricate the vehicle to insureproper operation, functioning, and guarding against excessive wear ofworking parts and deterioration of material. You must also followproper procedures for stowage and handling of lubricants and fuels.

1.

2.

3.

4.

Typical problems in extreme cold weather: Maintenance of mech-anical equipment in extreme cold conditions is exceptionally difficultin the field. Even shop maintenance cannot be completed withnormal speed because you must allow equipment to warm up beforeyou can make satisfactory repairs. In the field, you must performmaintenance under most difficult conditions. Your bare hands willstick to cold metal. Engine oils, except subzero grades, areunpourable at temperatures below -40°F. Ordinary greases becomehard at extremely cold temperatures. These difficulties increase thetime required for you to perform maintenance. At temperaturesbelow -40°F, you may require up to five times the normal amount oftime. The time you require to warm a vehicle so it will start and beoperable at temperatures as low as -50°F may approach 2 hours.Complete winterization, diligent maintenance, and well-trainedcrews are the key to efficient operation of vehicles in extreme coldweather.

Batteries: Extreme cold causes batteries to freeze and preventsthem from furnishing sufficient current. See FM 9-207 for methodsof protecting batteries from cold and maintenance of batteries incold weather.

Tracks and suspension: If possible, clean mud, snow, and ice fromtracks and suspension after stopping. See FM 9-207 for more detailedinformation about maintenance of and effects of cold weather ontracks and suspension.

Canvas covers: Canvas covers present difficulties in conforming totheir intended use due to apparent shrinkage. Shrinkage is usually aresult of wrinkles that are extremely difficult to smooth out atsubzero temperatures. Whenever possible, you should warm andunfold canvas in heated exclosures. Clean all snow, mud, and icefrom vehicle before covering. Keep ends of canvas off ground to

TA106392

3-55

TM 5-5420-226-10

MAINTENANCE UNDER ADVERSE CONDITIONS - Continued

EXTREME COLD WEATHER - Continued

prevent canvas from freezing to ground. Always cover rear deck toprevent entrance of snow into engine compartment. Snow will meltand later freeze, which may prevent you from operating linkages.

5.

6.

7.

Metal parts: Metal parts become brittle at subzero temperatures andcannot withstand shock loads as well as at normal temperatures. Youmust make frequent inspect ions of metal parts and components forcracks and breakage.

Plastic and rubber parts: You must handle any parts made of plasticor rubber carefully. Plastic and rubber parts become brittle in coldweather and may break due to vibration of handling. To preventinsulation from cracking and causing short circuits, you must warmrubber or plastic insulated cables before bending, and make sure thatall cables are properly installed.

Fuel and lubricants: See FM 9-207 for instructions on storage,handling, and use of fuels and lubricants in cold weather.

EXTREME HOT WEATHER

1.

2.

3.

4.

5.

Typical problems in extreme hot weather: Extreme heat causeswater, lubricants, and fuels to expand and possibly overflow theircent airiers. Perspiration from your hands contains acids and saltswhich cause corrosion of unprotected metal parts when handled.Engines and transmissions have a greater tendency to overheat.Metal parts can become too hot for you to handle, and paint canblister. Extreme heat and overexposure in the sun can cause rubberand plastic parts to age and crack.

Batteries: Batteries will self-discharge at a greater rate if leftstanding for long periods of time in high temperatures. You mustconsider this condition when operating in hot zones. You should runvehicle engine, periodically, to keep batteries charged.

Metal parts: Remove paint blisters with abrasive paper and spotpaint as required.

Plastic and rubber parts: Check plastic and rubber insulated cablesfor cracks which can result in short circuits. Check all plastic andrubber parts for cracks and aging.

Optical equipment: Do not expose sighting/opticalparts to direct rays of sun.

3-56

equipment optical

TM 5-5420-226-10MAINTENANCE UNDER ADVERSE CONDITIONS - Continued

HIGHLY HUMID OR SALTY ATMOSPHERE

1.

2.

3.

4.

Typical problems in very humid or salty atmosphere: Corrosiveaction will occur on all parts that are not properly protected. Youwill see evidence of corrosive action in the form of rust and paintblisters on metal parts, and mildew, mold, or fungus growth on wood,fabrics, or leather. Humid and salty atmospheres have a tendency todeteriorate oils and grease and destroy their rust-preventivequalities.

Metal surfaces: Remove corrosion from exterior metal surfaces withabrasive paper and apply a protective coating of paint, oil, or suitablerust preventive as required.

Canvas covers: You must clean and dry canvas covers often toprevent mildew.

M agnesium and aluminum parts: Clean all magnesium and aluminumparts and wipe dry to prevent corrosion.

1.

2.

3.

Typical problems in sand, dust, or mud: Painted surfaces and sightingoptical parts, if not covered, become etched by sand. Lubricants andfuels become contaminated. Service life of air cleaners and filters isshortened.

Sighting equipment: Keep exposed optical surfaces protected asmuch of the time as you can to prevent etching by sand or dust.

Engine and engine compartment: You must clean engine compart-ment and engine as often as required to prevent accumulation ofsand, dust, or mud. Cover engine compartment grilles when halted.

TA106394

3-57

TM 5-5420-226-10


AFTER FORDING

1. General: The following services should be performed on vehicle afterfording, especially in salt water. Perform these services, as soon astactical situation permits, to halt deterioration and avoid damagebefore the vehicle is driven extensively in regular service. Heatgenerated by moving parts during operation of vehicle will evaporateor force out most of the water which may have entered at variouspoints. Also, any small amount of water which has entered enginecrankcase through leakage or due to condensation will usually beevaporated and passed by ventilating system.

2. Hul l :

a. Open drain valves and allow all water to drain (page 2-91).

b. If fording was in salt water, wash all traces of salt water and saltdeposits from vehicle.

c. Clean, dry, and lubricate all exposed surfaces that will affectoperation or deteriorate due to exposure to water.

3. Engine, transmission, and final drive: Inspect engine, transmission,and final drive oil for contamination. If you find evidence ofcontamination, notify organizational maintenance.

4. Brake controls:

a . U s i n g 9 / 1 6 i n c h s o c k e t ,remove six screws andlockwashers (1 ) secur inge a c h o f t w o r e a r accesscovers (2) to underside ofhull. Remove covers andgaskets.

Using adjustable wrench,remove drain plug (3) fromleft and right brake controlhousings (4). A l low a l lwater to drain.

Apply sealing compound(item 35, app D) to threadsof drain plug (3).

Using adjustable wrench,install drain plug (3).

TA106395

3-58

TM 5-5420-226-10


AFTER FORDING - Continued

e. Place access covers andscrews and lockwashers.

gaskets in position and secure with

5. Suspension system: Lubricate all lubrication fittings (LO 5-5420-226-12).

6. Air cleaner: Remove aircleaner drain plug (5). If youfind evidence of water leakageinto air cleaner, notify organi-zational maintenance. I f nowater is present, reinstall drainplug.

Batteries: If an excessive amount of water entered hull (capable ofsplashin over batteries), check electrolyte level to be sure no waterentered batteries through vent caps (page 3-40). If you find high fluidlevels, notify organizational maintenance.

TA106396

3-59/(3-60 blank)

TM 5-5420-226-10

CHAPTER 4AMMUNITION

SMOKE GRENADE

GENERAL

UK (United Kingdom) L8A1 RP (Red Phosphorous) screening smokegrenades are used with the M239 grenade launcher. They are filled with ared phosphorous and butyl rubber mix (1). Each grenade is approximately2.61 inches (66.3 mm) in diameter, 7.28 inches (185 mm) long, and weighsapproximately 1.5 pounds (.68 kg).

A grenade is propelled from the discharger when electrical current at thefiring contact (2) ignites the fuze (3). The fuze ignites the propellantcharge (4) and a delay composition within the delay holder (5) and, in turn,the gunpowder bursting charge (6). This bursts the rubber case (7) andignites the red phosphorous/butyl rubber composition (1) to produce animmediate smoke cloud.

TA271849Change 1 4-1

TM 5-5420-226-10

SMOKE GRENADE - Continued

DESTRUCTION OF UK L8A1 RP AMMUNITION TO PREVENT ENEMYUSAGE

Destroy grenades by burning as follows:

1. The ammuntion should be stacked up in a pile.

2. Place flammable materials such as rags, scrap wood, or brush on andabout the pile.

3. Ignite by means of incendiary grenade fired from a safe distance, a combustibletrain of suitable length, or other appropriate means. Take cover immediately. Thedanger area for piles being burned in the open is 600 meters (657 yards).

Change 1

TA271850

4 - 2

TM 5-5420-266-10

1.

2.

Ammunition is packed to withstand conditions ordinarily met in thefield. Take care to keep packing boxes from becoming broken ordamaged. All broken packing boxes must be repaired immediately.Carefully transfer all markings to new packing boxes.

When necessary to leave ammunition in open, raise it on platformat least 3 inches (7.6 cm) from ground. Cover with a doublethickness of paulin. Leave 18 inches (46 cm) space for aircirculation Trenches should be dug to prevent water from runningunder the pile. Ammunition is damaged by moisture and hightemperature and should be protected as follows:

a.

b.

c .

d.

Do not break moisture-resistant seal on container until ammu-nition is to be used.

Protect ammunition, particularly fuzes, from high temperatureand direct rays of sun. More uniform firing is obtained ifrounds are at the same temperature.

Do not disassemble grenade or any of its parts.

When loading grenades into stowage box, grasp grenade casewith hand over primer (P), and nose of projectile with otherhand.

TA271851

Change 1 4-3

TM 5-5420-226-10

SMOKE GRENADE - Continued

e.

f .

g.

Grenades dent easily and should be protected from hard knocksand blows. Dented grenades may result in incomplete seating,jamming in chamber, and difficulty in removal. Do not load orfire dented rounds.

D O not handle duds. Duds are extremely dangerous. Their fuzesmay be armed. They should be left in place for disposal byauthorized personnel in accordance with TM 9-1300-206.

Do not remove protective or safety devices from fuzes until justbefore loading.

TA271852

4-4 Change 1

TM 5-5420-226-10

APPENDIX AREFERENCES

A-1. SCOPE

This appendix lists all forms, field manuals, and technical manualsreferenced in this manual.

A-2. FORMS

Recommended ChangesPublications

Quality Deficiency Report

A-3. FIELD MANUALS

T o D A

Operation and Maintenance o fOrdnance Materiel in Cold Weather

Basic Cold Weather Manual

Northern Operations

A-4. TECHNICAL MANUALS

Operator’s Manual, Radio SetsOperator and Organizational Main-tenance Manual, Radio Sets

Operator’s Organizational, DirectSupport and General Support Main-tenance Manual Including RepairParts and Special Tools List: Sup-pressor, Electrical Transient MX-7778A/GRC

DA Form 2028

SF 368

FM 9-207

FM 31-70

FM 31-71

TM 11-5820-401-10-2

TM 11-5820-498-12

TM 11-5915-224-14

TA248719

Change 1 A-1

TM 5-5420-226-10

REFERENCES - Continued

Operator’s Manual, Mask,Chemical-Biological: AircraftABC-M24 and Accessor ies andMask Chemical-Biological: TankM25/M25A1 and Accessories

Painting Instructions for Field Use

Operator’s, Organizational, DirectSupport and General Support Main-tenance Manual; Bridge, Armored-Vehicle-Launched; Scissoring Type;Aluminum; 60-ft Span

Organizational Maintenance In-structions, M48A5 Tank Chassis,Transporting: for Bridge Armored-Vehicle-Launched Scissoring Type,Class 60

Organizational, Direct Support,and General Support MaintenanceInstructions Launcher for M48A5Tank Chassis, Transporting: forBridge Armored-Vehicle-LaunchedScissoring Type, Class 60

Administrative Storage of Equip-ment

Procedures for Destruct ion o fEquipment to Prevent Enemy Use

Operator and Organizational Main-tenance Manual for Lead Ac idType Batteries

TM 3-4240-280-10

TM 43-0139

TM 5-5420-203-14

TM 5-5420-226-20

TM 5-5420-227-24

TM 740-90-1

TM 750-244-3

TM 9-6140-200-14

A-4.1 PAMPHLET

The Army Maintenance ManagementSystem (TAMMS) DA PAM 738-750

TA248677

A-2 Change 1

TM 5-5420-226-10

MISCELLANEOUS PUBLICATIONS

REFERENCES-Continued

Identification List for Fuels, Lubricants,Oils and Waxes

Lubrication Order; Launcher M60A1 TankChassis, Transporting: for Bridge, Armored-Vehicle-Launched, Scissoring Type, Class 60

C9100-IL

LO 5-5420-202-12

Safety Measures to be Observed WhenInstalling and Using Whip Antennas, Field-Type Masts, Towers and Antennas and MetalPoles That Are Used With Communications,Radar and Direction Finder Equipment(TO 31P5-1-1) TB SIG 291

Hand Portable Fire Extinguishers Approvedfor Army Users TB 5-4200-200-10

Operator, Unit, Direct Support & GeneralSupport Maintenance Manual Including RepairParts and Special Tools List for DemolitionKit, Mine Clearing Line Charge (MICLIC) TM 9-1375-215-14&P

Change 7 A-3/(A-4 blank)

TM 5-5420-226-10

APPENDIX B

COMPONENTS OF END ITEM AND BASIC ISSUE ITEMS LISTS

Section I. INTRODUCTION

B-1. SCOPE

This appendix lists components of endthe M48A5 AVLB to help you inventoryefficient operation.

B-2. GENERAL

item and basic issue items foritems required for safe and

The Components of End Item and Basic Issue Items Lists are dividedinto the following sections:

a. Section II. Components of End Item. This l isting is forinformational purposes only, and is not authority to requisition replace-ments. These items are part of the end item, but are removed andseparately packaged for transportation or shipment. As part of the enditem, these items must be with the end item whenever it is issued ortransferred between property accounts. Illustrations are furnished toassist you in identifying the items.

b. Section III. Basic Issue Items. These are the minimum essentialitems required to place the M48A5 AVLB in operation, to operate it, andto perform emergency repairs. Although shipped separately packaged,BII must be with the M48A5 AVLB during operation and whenever it istransferred between property accounts. The illustrations will assist youwith hard-to-identify items. This manual i s your author i ty torequest/requisition replacement BII, based on TOE/MTOE authorizationof the end item.

B-3. EXPLANATION OF COLUMNS

The following provides an explanation of columns found in thetabular listings:

a. Column (1) - Illustration Number (Illus Number). This columnindicates the number of the illustration in which the item is shown.

b . Column (2) - National Stock Number.stock number assigned to the item and will bepurposes.

Indicates the Nationalused for requisitioning

TA106399

B-1

TM 5-5420-226-10

Section I. INTRODUCTION - Continued

c. Column (3) - Description. Indicates the National item name anda minimum description to identify and locate the item. The last line foreach item indicates the Federal Supply Code for Manufacturer (FSCM)(in parentheses) followed by the part number.

d. Column (4) - Unit of Measure (U/M). Indicates the measureused in performing the actual operational/maintenance function. Thismeasure is expressed by a two-character alphabetical abbreviation (e.g.,ea, in, pr).

e. Column (5) - Quantity required (Qty rqr). Indicates the quantityof the item authorized to be used with/on the equipment.

TA106443

B-2

TM 5-5420-226-10

1

2

3

4

Section II. COMPONENTS OF END ITEM

National Stocknumber

6650-01-196-4667

5855-01-027-3625

5855-01-027-1553

2540-00-706-8219

DescriptionFSCM and Part number

CASE, CARRYING: AN/WS-2, NIGHT VIEWER(l-RIGHT REAR OFDRIVER ON FLOOR, 1-LEFT FRONT OF COM-MANDER UNDERRADIO RACK)(19207) 11669784

COVER PROTECTIVE:EYEPIECE, NIGHTVIEWER (ON VIEWEROR STOWED IN CARRYINGCASE) (80063) SM-C771382

COVER, PROTECTIVE:WINDOW, NIGHTVIEWER (ON VIEWEROR STOWED IN CARRYINGCASE) (80063) SM-C771364

HOOK, TOW, CABLE: (INRIGHT FRONT FENDERSTOWAGE BOX) (19207)7068219

(4)

U / M

EA

EA

EA

EA

2

2

2

4

—

Change 6 B-3

TM 5-5420-226-10

Section II. COMPONENTS OF END ITEM-Continued

(1)IllUs.

number

5

6

7

(2) —National Stock

number

5315-00-706-9195

5315-00-350-4326

5855-01-096-0871”

Change 6

(3)Description

FSCM and Part number

PIN, GROOVED,HEADLESS: (IN RIGHTFRONT FENDER STOWAGEBOX) (19207) 7069195

PIN, LOCKING: (INRIGHT FRONT FENDERSTOWAGE BOX) (19207)5213744

VIEWER, NIGHT,AN/VVS-2: (MOUNTED INHATCH OR STOWED INCARRYING CASE) (80063)SM-D-771480-1

EA

EA

EA

4

8

2

B-4

TM 5-5420-226-10

Section II. COMPONENTS OF END ITEM - Continued

(2)National Stock

number

(3)Description


8 1040-01-015-0874 LAUNCHER, SMOKE GRENADE,M239 (MOUNTED ONCHASSIS) (81361) 1313-12-32

- CONSISTING OF -

EA 2

EA 1

EA 1

EA 1

EA 1

EA 1

EA 1

9 1040-01-041-9830 BOX, STOWAGE(K6897) FV576789

COVER, DISCHARGER, LEFT(K6897) FV578937

1040-01-042-3861

1040-01-043-7896 COVER, DISCHARGER, RIGHT(K6897) FV578934

12 1040-01-041-9828 DISCHARGER, RIGHT(K6897) FV855991

13 DISCHARGER, LEFT(K6897) FV855990

5975-01-047-8359 PUSHBUTTON, FIRING(K6897) FV861135

FILTER UNIT, GASPARTICULATE81361) DL5-19-1779

15 1240-00-853-3201

Change 6 B-4.l/(B-4.2 blank)

Section III. BASIC ISSUE ITEMS

Illus.number

2

3

4

TM 5-5420-226-10

(2)National Stock

number

5110-00-293-2336

2540-00-670-2459

5140-00-473-6256

5120-00-526-6044

7510-00-889-3494

(3)Description


AXE: SINGLE BIT, 4 LB HEAD,34 IN. LG HANDLE (IN LEFTFRONT FENDER STOWAGEBox)(81348)GGGA926T1cIDA

BAG ASSY: PAMPHLET(INCREW COMPARTMENT)(19207) 11676920

BAG TOOL: SATCHEL (INRIGHT FRONT FENDERSTOW AGE BOX)(81349) MIL B43663T1

BAR,PINCH: l/21N. WIDE161N. LG (IN TOOL BAGINRIGHT FRONT FENDERSTOWAGE BOX)(81348)GGGBI01T4

BINDER, LOOSELEAF: TECH-EQUIPMENT LOG BOOK(IN PAMPHLET BAG)(19207) 11677003

EA

EA

EA

EA

EA

1

1

1

1

1

Change 6 B-5

TM 5-5420-226-10

Section III. BASIC ISSUE ITEMS - Continued

(1)Illus.

number

6

7

8

9

10

(2)National Stock

number

4010-00-202-2425

5340-00-076-8996

5140-00-261-4994

6230-00-378-2053

5120-00-224-1390

(3)Description


CABLE, TOWING: (IN BRACK-ETS NEXT TO LEFT FRONTAND REAR FENDER)(19207) 7360553

CAP, PLUG: DUST AND MOIS-TURE SEAL (ON HEATER EX-HAUST TUBE OR STOWED INRIGHT FRONT FENDER BOX)(19207) 10934267

cARRIER, WIRE CUTTER: (INTOOL BAG IN RIGHT FRONTFENDER STOWAGE BOX)19207) 11655787

CORD, LIGHT, ELECTRICAL:15 FT LG (IN RIGHT FRONTFENDER STOWAGE BOX)(19207) 17-C-35079-33

CROWBAR: PINCH POINT, 60IN. LG, 1-1/4 IN. POINT(IN LEFT FRONT FENDERSTOWAGE BOX)[ 19207) 11677049-1

(4)

U/M

EA

EA

EA

EA

EA

2

1

1

1

1

B-6 Change 6

TM 5-5420-226-10


( 1 )Illus.

number

11

12

13

14

(2)National Stock

number

5110-00-595-8229

4930-00-288-1511

5120-00-243-7326

5120-00-227-8074

DescriptionFSCM and Part number

CUTTER,BARBED WIRE,IN-SULATED HANDLES: (INCARRIER, ITEM 8,5140-00-261-4994)(19207) 11655981

EXTENSION, GREASE GUN:121N. LG, FLEXIBLE (INTOOL BAG IN RIGHT FRONTFENDER STOWAGE BOX)(19207)6300333

EXTENSION, SOCKETWRENCH: l/2lN. DR, 51N.LG (IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(95683) 41B306

EXTENSION, SOCKETWRENCH: 1/2 IN. DR, 10 IN.LG (IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)[19207) 11655788-1

EA

EA

EA

Change 6

1

1

1

1

B-7

TM 5-5420-226-10


(1)IllUs.

numbe

15

16

17

18

(2)National Stock

number

5120-00-273-9208

5120-00-243-7328

5120-00-227-8079

4210-00-555-8837

B-8 Change 6

(3)Description


EXTENSION, SOCKET WRENCH3/4 IN. DR, 4-5/8 IN. LG(IN TooL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(55719) L32

EXTENSION, SOCKETWRENCH: 3/4 IN. DR, 8 IN. LG(IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(19204) 41B309-20

EXTENSION, SOCKETWRENCH: 3/4 IN. DR, 16 IN.LG (IN TOOL BAG IN RIGHTFRONT FENDER STOWAGE BOX)(55719) L122

EXTINGUISHER, FIRE: DRYCHEMICAL (IN CREWCOMPARTMENT BEHINDOPERATOR)(19207) 10916537

EA

EA

EA

EA

1

1

1

TM 5-5420-226-10


19

20

21

22

(2)National Stock

number

5120-00-016-2149

6230-00-264-8261

7240-00-527-9868

4930-01-133-7143

(3)Description

FSCMand Part number

FIXTURE,TRACK CONNECT-ING (POWER OPERATION):(IN RIGHT FRONT FENDERSTOWAGE BOX)(19207) 12252120

FLASHLIGIT: (INCREW COMPARTMENTFLASHLIGHT BRACKETS)(21108) MX991-U

FUNNEL: METAL WITHSTRAINER, 1 QTCAPACITY(IN RIGHT REAR FENDERSTOWAGE BOX)(81348) RRF800TICBS2

GUN, LUBRICATING: HIGHPRESSURE, 21 OZCAPACITY (IN TOOL BAGIN RIGHT FRONT FENDERSTOWAGE BOX) (19207)12312118

(4)

U/M

EA

EA

EA

EA

(5)Qtyrqr

2

2

1

1

Change 6 B-9

TM 5-5420-226-10


( 1 )IllUs.

number

23

23

24

25

(2)National Stock

number

5120-00-243-2957

5120-00-900–6097

5120-00-061-8546

5120-00-473-6320

(3)Description


HAMMER, ENGINEER: 10LBSLEDGE, HICKORY WOODHANDLE (IN LEFT FRoNTFENDER STOWAGE BOX)(79416) 75H

or optional

HAMMER, ENGINEER: 10 LBSLEDGE, FIBERGLASSHANDLE (IN LEFT FRONTFENDER STOWAGE BOX)(81348) GGGH86T1OC1SB

HAMMER, MACHINIST: 2 LBFIBERGLASS HANDLE (INTOOL BAG IN RIGHT FRONTFENDER STOWAGE BOX)(19207) 11677028-3

HANDLE, EXTENSION,WRENCH: 1-1/8 IN. ID,36 IN. LG (IN RIGHT FRONTFENDER STOWAGE BOX)(80064) 1756412

1

1

1

B-10 Change 6

TM 5-5420-226-10


26

27

28

28

(2)National Stock

number

5120-00-288-6574

5120-00-236-7590

5120-00-230-6385

5120-00-249-1076

(3)Description


HANDLE, MATTOCK, PICK:36 IN. LG (IN LEFT FRONTFENDER STOWAGE BOX)(19207) 11677021

HANDLE, SOCKET WRENCH,HINGED: l/2 IN. DR, 14 IN.LG (IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBox)(19207) 11655786-1

HANDLE, SOCKET WRENCH,RATCHET l/2 IN. DR, 9 IN.LG (IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(99993) H41H1505-9

HANDLE, SOCKET WRENCH,RATCHET: 3/4 IN. DR, 17 IN.LG (IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(80064) 1940708

EA

EA

EA

EA

Change 6

1

1

1

1

B-11

TM 5-5420-226-10


(1)IllUs.

29

30

31thru

34

35

(2)National Stock

number

5120-00-221-7959

4720-00-498-6291

DELETED

5120-00-198-5390

(3)Description

FSCM and Pat-t number

HANDLE SOCKET WRENCH,3/4 IN. DR, 23 IN. LG(IN TOOL BAG IN RIGHTFRONT FENDER STOWAGE BOX(45225) H377

HOSE ASSEMBLY, HYDRAULICSLAVE: (IN LEFT REARFENDER STOWAGE BOX)(97403) 13215E6140

KEY, SOCKET HEAD SCREW,L-TYPE, SHORT: 3/8 IN. (INTOOL BAG IN RIGHT FRONTFENDER STOWAGE BOX )(80064) 1940722

(4)

U/M

EA

EA

1

1

B-12 Change 6

page B-14

TM 5-5420-226-10


-rIllUs.

numbw

36

37

38

39

40

(2)National Stock

number

5120-00-224-2510

6545-00-922-1200

(3)Description


KEY, SOCKET HEAD SCREW,L-TYPE, SHORn 5/8 IN. (INTOOL. BAG IN RIGHT FRONTFENDER STOWAGE BOX)($0064) 1940710

KIT, FIRST AID: (ONE INCREW COMPARTMENT, ONEIN RIGHT REAR FENDERSTOWAGE BOX)(89875) 11677011

LUBRICATION ORDER: (INPAMPHLET BAG)LO 5-5420-226-12

MANUAL, OPERATOR’S(BRIDGE]: (IN PAMPHLET BAGTM 5-5420-203-14

MANUAL, OPERATOR’S:(IN PAMPHLET BAG)TM 5-5420-226-10

xUmfl

EA

EA

EA

EA

EA

m-Qtyrqr

1

2

1

1

1

Change 6 B-13/(B-14 blank)

TM 5-5420-226-10Section III. BASIC ISSUE ITEMS - Continued

42

43

44

44.1

45

(aNational Stock

number

5120-00-243-2395

4930-00-262-8868

5340-00-158-3505

5340-W-15$-3507

5120-00-278-0350

;120-00-278-0352

;120-01-040-9318

(3)Description

FSCM ad F&t number

MATTOCK, PICK: 5 LBW/Cl HANDLE (IN LEFTl?RONT FENDER STOWAGEB(3X) (19207) 11677022OILER, HAND: WHYI LEVE RPUMP, FLEXIBLE SPOU’r(IN LEFT FIU3NT FENDERSTOWAGE BOX) (72798) 328PADLOCK, INDIVIDUAL 2 ONCIJPOLA HATCHES, 4 ONFENDER BOXES MILP17802TAC1 (81349)

ORPADLOCK, INDIVIDUAL,W/CLEVE3 (81349)MILP17802 TAC1PLIERS, sLIP-JoIN’11ANGLE NOSE, MULTI-TONGUE AND GKCX3VE,5 IN. LG (IN TOOLBAG IN RIGHT FRONTFENDER STOWAGE BOX)(80244) GGGP471T2C1SA

PLIER S, SLIP- JOIN~ANGLE NOSE, MULTI-TONGUE AND GROOVE,10 IN. L(3 (IN TOOLBAG IN RIGHT FRONTFENDER STOWAGE BOX)(7~15~2) 420PULLER, MECHANICAL,TRACK END CONNECTOR:(IN RIGHT REAR FENDERSTOWAGE BOX) (19207)12252143

(4)

U/M

EA

EA

EA

EA

IZA

EA

EA

Change 6

-mQty

2s1

1

6

6

1

1

1

B-15

TM 5-5420-226-10


(1)Illus.

numbel

46

47

48

49

50

(2iNational Stock

number

5120-00-234-8910

.

5120-00-234-8913

5120-00-224-7375

5120-00-596-8502

5120-00-227-7338

(3)Description

FSCMand Part number

SCREWDRIVER, FLAT-TIPPED,GENERAL PURPOSE: 61N.BLADE IIN TOOLBAGINRIGHT FRONT FENDERSTOWAGE BOX)(72368 ) 2143-6

SCREWDRIVER, CROSS-TIPPED, PHILLIPS NO. 2:4 IN.BLADE (IN TOOL BAG INRIGHT FRONT FENDERSToWAGE BOX)(55719) RGP42

SCREWDRIVER, CROSS-TIPPED, PHILLIPS NO. 4:8 IN.BLADE (IN TOOL BAG INRIGHT FRONT FENDERSTOWAGE BOX)(55719) RGP84

SCREWDRIVER, FLAT-TIPPED,CLOSE QUARTER: 1-1/2 IN.BLADE (IN TOOL BAG INRIGHT FRONT FENDERSTOWAGE BOX)(55719) SSD1

SCREWDRIVER, FLAT-TIPPED,EXTRA HEAVY DUTY: 5 IN.BLADE (IN TOOL BAG INRIGHT FRONT FENDERSTOWAGE BOX)(77948) D339

(4)

J/M

EA

EA

EA

EA

EA

iFi-Qtyrqr

1

1

1

1

1

B-16 Change 6

TM 5-5420-226-10


TUlus.

rwrllbe

51

52

53

(2)National Stock

number

5120-00-293-3336

3940-01-110-4432

6120430-1814813

(3) (4)Description

FSCM and Part number UmlSHOVEL, HAND: EAROUND POINT, D-HANDLE,SHORT (IN LEFT FRONTFENDER STOWAGE BOX)(19207) 11655784

SLING, MULTIPLE LEG: 2 LEG, EA5/8 IN. X 6 FT CHAIN (INLEFT FRONT FENDER BOX)(97403) 13212 E7099

SOCKET, SOCKET WRENCH: 12 EAPT, 3/4 IN. DR, 15/16 IN.(IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)

(58536) A-A-1394

Change 6 B-17

TM 5-5420-226-10

Section III. BASIC ISSUE ITEMS (Continued)

(1)Iilus.

numbe[

54

54

54

54

(2)National Stock

number

5120-00-237-0982

5120-00-189-7924

5120-00-237-0984

5120-00-189-7932

(3)Description

FSCMand Pafl number

SOCKET, SOCKET WRENCH:12PT, l/21N.DR,3/81N.(m TOOL BAG IN mGHTFRONT FENDER STOWAGEBOX)(55719) SW120

SOCKET, SOCKET WRENCH:12 PT, 1/2 IN. DR, 7/16 IN.(IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(65814J ST1214

SOCKET, SOCKET WRENCH:12 PT, 1/2 IN. DR, 1/2 IN.(IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(55719) SW161

SOCKET, SOCKET WRENCH:12 PT, 1/2 IN. DR, 9/16 IN.(IN TooL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(19207) 11677025-1

Tii

JIM—

EA

EA

EA

EA

ErQtyrnr

1

1

1

1

B-18 Change 6

TM 5-5420-226-10


(1)IllUs.

numbe~

55

55.1

56

56.1

57

(2)‘National Stock

number

5120-00-189-7985

5120-00-189-7934

5120-00-181-6813

5120-00-235-5871

5120-00-293-0094

DescriptionFSCNl and Part number

SOCKET, SOCKETWRENCH: 12 PT, 1/2 IN.DR, 3/4 IN. (IN TOOLBAG IN RIGHT FRONTFENDER STOWAGE BOX)(19207) 11677025-4

SOCKET, SOCKETWRENCH: 12 PT, 1/2 IN.DR, 7/8 IN. (IN TOOLBAG IN RIGHT FRONTFENDER STOWAGE BOX)(19207) 11677025-5

SOCKET, SOCKETWRENCH: 12 PT, 3/4IN. DR, 15/16 IN.IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX (24789) 1230

SOCKET, SOCKETWRENCH: 12 PT, 3/4 IN.DR, 1-1/4 IN. (IN TOOLBAG IN RIGHT FRONTFENDER STOWAGE BOX)(47805) 5540

SOCKET, SOCKETWRENCH: 12 PT, 3/4IN. DR, 1-1/2 IN. (INTOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX) (47805) 5548

(4)

U/M

EA

EA

EA

EA

EA

1

1

1

1

1

Change 6 B-19

TM 5-5420-226-10


(1)nhs.

number

57.1

58

59

60

60.1

(2)National Stock

number

;120-00-239-0021

j 130-01-084-6025

;120-00-473-6476

i120-OO-277-1246

i420-00-050-8745

(3)Description


SOCKET, SOCKET WRENCH:12 PT, 3/4 IN. DR. X 1 1/8 IN(IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX (47805) 5536

SOCKET, SOCKET WRENCH,POWER DR. 3/4 IN. DR,1 5/16 IN. (IN TOOL BAGIN RIGHT FRONT FENDERSTOWAGE BOX) ( 19207~10894847-1WRENCH, ADJUSTABLE,AUTOMOTIVE: 11 1/2IN. HANDLE (IN TOOLBAG IN RIGHT FRONTFENDER STOWAGE BOX)80212) P489

WRENCH, CYLINDERROD FLATS: 1 1/2 INCH[IN RIGHT FRONTFENDER STOWAGE BOX)(07971) 1709

WRENCH, CYLINDERROD FLATS: 4-9/16INCH (IN RIGHTFRONT FENDER STOWAGEBOX) (97403) 13211 E3202

(4)

xl!

EA

EA

EA

2

1

B-20 Change 6

TM 5-5420-226-10

Section III. BASIC ISSUE ITEMS (Continued)

-Ti-IMMS.

numbe

61

61

62

62

63

(21National Stock

number

5120-00-277-2307

5120-00-187-7123

5120-00-293-2134

5120-00-224-3102

5120-00-563-7342

(3)Description


WRENCFI,DOUBLE HEAD,OPEN END: 5/161N.AND3/8IN.(INTOOLBAG IN RIGHT

FRC)NTFENDER STOWAGEBOX](55719) S1OI2

WRENCI-I,DOUBLE HEAD,OPEN END: 7/161N.ANDl/2IN. (IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(55719)S 1416

WRENCH,DOUBLE HEAD,OPEN END: 9/161N.AND11/161N.(INTOOL BAGINRIGHT FRONT FENDERSTOWAGE BOX)

(19207) 5323330WRENCH,DOUBLE HEAD,OPEN END: 5/81N. AND 3/4IN. (IN TOOL BAG IN RIGHTFRONT FENDER STOWAGEBOX)(658141 729

WRENCH, SINGLE HEAD,OPEN END: 3-5/32 IN., 26IN. LG (IN RIGHT FRONTFENDER STOWAGE BOX)(19207) 8708683

T

u/M

EA

EA

EA

EA

EA

Change 6 B-21/(B-22 blank)

TM 5-5420-226-10

APPENDIX C

ADDITIONAL AUTHORIZATION LIST


1. SCOPE

This appendix lists additional items you are authorized for thesupport of the M48A5 AVLB.

2. GENERAL

This list identifies items that do not have to accompany the M48A5AVLB and that do not have to be turned in with it. These items are allauthorized to you by Combined Table of Allowances (CTA), ModifiedTable of Organization and Equipment (MTOE), Table of Distribution andAllowances (TDA), or Joint Table of Allowances (JTA).

3. EXPLANATION OF LISTING

National stock numbers, descriptions, and quantities are provided tohelp you identify and request the additional items you require to supportthis equipment. The items are listed in alphabetical sequence by itemname under the type document (i.e., CTA, MTOE, TDA, or JTA) whichauthorizes the item(s) to you.

TA106419

C-1

TM 5-5420-226-10

Section II. ADDITIONAL AUTHORIZATION LIST(1)

NATIONASTOCK

NUMBER

5820-00-- 223-7433

5820-00-8 233-7475

5820-00-938-0214

7240-00-089-3827

7240-00-242-6153

8345-00-375-0223

8345-00-178-8437

8345-00-227-1511

8345-00-227-1405

(2)DESCRIPTION

FSCM&PARTNUMBER

lADIO80063)

?ADIO80063)

MTOEAUTHOFUZED ITEMS

sET,AN/vRc-46: (IN RADIO MOUNT)PPIJ4319

or

sET.AN/vRc-64: (IN RADIO MOuNT)PPL4324

CTA AUTHORIZED ITEMS

iCCESSORY KIT, MK-1297-G (USED WITHtADIO SETAN/VRC-46 ORAN/VRC-64):[N STALLED wITH RADIO sET)80063 ) PPL4425

;AN, WATER, MILITARY, PLASTIC, 5 GL:IN WATER CAN STOWAGE BRACKET)81349) MIL-C-43613

or

DAN, WATER, MILITARY, STEEL, 5 GL:IN WATER CAN STOWAGE BRACKET)81349) MILC13984T1

~LAG SET, M238: (IN RIGHT FRONT FENDER;TOWAGE BOX)81349) MIL-F-40045

CONSISTING OF:

CASE, CARRYING, CS-90: COMPONENT A

FLAG, MC-273 (RED): COMPONENT C

FLAG, MC-274 (YELLOW): COMPONENT D

(3)

u/M

EA

EA

EA

EA

EA

EA

EA

EA

EA

(4)

2TY11TH

e-.. .

1

1

1

1

1

1

1

1

1

C-2 Change 6

TM 5-5420-226-10

Stction II. ADDITIONAL AUTHORIZATION LIST (Continued)

(1)NATIONAL

STOCKNUMBER

8345-00-22’?-1406

8345-00-242-3650

8345-00-174-6865

4930=00735-7745

7240-00-177-6154

7310-oo-285-6155

4730=oo-690-1162

(2)DESCRIPTION

u/MFSCM& PARTNUM13ER

CTA AUTHORIZED ITEMS-Continued

FLAG, MC-275 (GREEN): COMPONENT E

STAFF, FLAG, MC-2’70: COMPONENT B

?ANEL, MARKER, AERIAL LIAISON, VS-17/IVX: (IN RIGHT FRONT FENDER STOWAGE BOX81349) MIL-P-40061

‘LJh4P AND HOSE ASSEMBLY: (IN RIGHT REAR~ENDER STOWAGE BOX)19207) 7’357745

;POUT, FLEXIBLE! 5 GL CAN: (IN RIGHT?RONT FENDER STOWAGE BOX) (09647)138 A7511

;TOVE, COOKING, GASOLINE, WITH CASE:N RIGHT REAR FENDER STOWAGE BOX)81349) MILSI0736-1

ADAPTER,STRAIGHT PIPE: (IN RIGHT REARFENDER STOWAGE BOX):19207] 108703X3

z1/N

—

EA

EA

EA

EA

EA

EA

EA

—

G_QTY,UTH

1

3

2

1

2

1

1

Change 6 C-3/(C-4 blank)

TM 5-5420-226-10

APPENDIX D

EXPENDABLE SUPPLIES AND MATERIALS LIST


1. SCOPE

This appendix lists expendable supplies and materials you will needto operate and maintain the M48A5 AVLB. These items are authorizedto you by CTA 50-970, Expendable Items (except Medical, Class V,Repair Parts, and Heraldic Items).

2. EXPLANATION OF COLUMNS

a. Column 1 - Item number. This numberin the listing and is referenced in the narrativethe material (e.g., “Use cleaning compound, item

is assigned to the entryinstructions to identify12, app D").

b. Column 2 - Level. This column identifies the lowest level ofmaintenance that requires the listed item.

C - Operator/CrewO - Organizational MaintenanceF - Direct Support MaintenanceH - General Support Maintenance

c . Column 3 - National Stock Number. This is the National stocknumber assigned to the item; use it to request or requisition the item.

d. Column 4 - Description. Indicates the Federal item name and,if required, a description to identify the item. The last line for eachitem indicates the Federal Supply Code for Manufacturer (FSCM) inparent heses followed by the part number.

e. Column 5 - Unit of Measure (U/M). Indicates the measure usedin performing the actual maintenance function. This measure is expres-sed by a two-character alphabetical abbreviat ion (e.g., ea, in, pr). If theunit of measure differs from the unit of issue, requisition the lowest unitof issue that will satisfy your requirements.

TA106422

D-1

TM 5-5420-226-10

Section II. EXPENDABLE SUPPLIES AND MATERIALS LIST

(1)

ITEMNUMBER

1

2

3

4

5

6

7

7.1

8

9

10

(2)

LEVEL

c

c

c

c

c

c

c

c

c

c

c

(3)NATIONAL

STOCKNUMBER

8040-00-262-9025

8040-00-262-9028

8040-00-664-4318

6135-00-120-1020

8020-00-244-0153

8020-00-224-8024

1o15-oo-615-7208

9150-o1-053-6688

5350-oo-192-5047

5350-oo-192-5049

5350-oo-192-5051

(4)

DESCRIPTION

ADHESIVE,GENERAL PURPOSE,NATURAL RUBBER: 40ZTUBE(81348) MMMA1617T1

ADHESIVE,GENERAL PURPOSE,NATURAL RUBBER: 1 PTCAN(81348) MMMA1617T1

ADHESIVE,GENERAL PURPOSE,SYNTHETIC RUBBER: 1 PTCAN(81348) MMMA1617T2

BATTERY,BA30: FLASH-LIGHTS AND INSTRUMENTS: 10 El!(81349) MILB1819

BRUSH,ARTIST, METAL FERRULEFLATPOINT,7/16 IN.WIDE:[81348) HB241

BRUSH,ARTIST, METALFERRULE, ROUND TAPERED:(81348) HB118T1C1SA

BRUSH, SECTION, CLEANING:(19207) 6157208

CLEANER, LUBRICANT,PRESERVATIVE (CPL) (8 1349)MIL63460

CLOTH, ABRASIVE, ALOXIDE, 80GRIT: 50 SHEETS(81348) PC451T1C1



(5)

U/M

02

PT

PT

EA

EA

EA

EA

GL

SH

SH

SH

TA248679D-2 Change 1

TM 5-5420-226-10

11

13

13.1

16

18

19

20

(2)

LEVEL

c

c

c

c

c

c

c

c

c

c

c

(3)NATIONAL

STOCKNUMBER

Section II. EXPENDABLE SUPPLIES AND MATERIALS LIST (Continued)

(1)

ITEMNUMBER

5350-oo-221-0872

6850-00-227-1887

5610-00-141-7838

7390-oo-990-739 I

9150-oo-111-6256

9150-oo-190-0904

6240-00-155-7836

6240-00-155-8714

6240-00-D19-3093

6240-00-”044-6914

6240-00-295-2668

(4)

DESCRIPTION

CLOTH,ABRASIVE, CROCUS(CA): 50 SHEETS(81348) Pc458C1

COMPOUND, CLEANING,LENS: 1QT CAN(81349) MILc372

COMPOUND, NON-SLIPOD: 1GL CAN(81349) MmJN5044T2

DETERGENT, LAUNDRY

FLUID, HYDRAULIC (FRH): 1QT CAN(81349) MILH46170, AMENDI

GREASE,GAA: ILBCAN(81349) MILG10924

LAMP, 28V, #327: HI BEAMINDICATC)R,DUST DETECTORWARNING (96906) MS25237-327

LAMP,28V,$313: PERSONNELHEATER, (96906)MS25231-313

LAMP 28V, #623: DOMELIGHT(96906) MS15570-623

LAMP, 28V, $1683: BO DRIVE(96906), MS52532-1683

LAMP, 28V, #1691: DOMELIGHTS(96906) MS25232-1691

(5)

U/nJl

SH

QT

GL

LB

QT

LB

EA

EA

EA

EA

EA

Change 2 D-3

TM 5-5420-226-10

(1)

ITEMNUMBER

21

22

23

24

25

26

27

28

29

30

31

(2)

LEVEL


T

c

c

c

c

c

c

(3)IJATIONA1

STOCKNUMBER

5240-00-?66-9940

5240-00-119-0877

9150-o1-152-4117

4730-oo-045-983:

7920-00-205-171:

4020-00 -689-568~

6850-00-597-976!

(4)

DESCRIPTION

LAMP, 28V, #1829: MASTERCONTROL PANEL, INSTRUMENTPANEL, POWERPLANT WARNING(96906) MS25231-1829

LAMP, 28V, #1251: BOMARKER HEAD AND TAILLIGHTAND MASTER BATTERY INDICATOR[96906) MS15570-1251

LUBRICATING OIL, ENGINE ANDTRANSMISSION (OE/HDO-15W/40)1 QT CAN(81349) MIL-L-2104

DELETED

)ELETED

)ELETED

)EIETED. USE ITEM 7.1

PLUG, PIPE, MAGNETIC: (SPAREFOR FINAL DRIVE FILLER)(96906) MS9006-12

RAG, WIPING, COTTON, WHITE:50 LB(81348) DDDR30GB

ROPE, MANILA, 3/4 IN.(81348) TR605

SOLVENT, CLEANING COM-POUND: 1 GL CAN(81349)

U IM

EA

EA

EA

LB

FT

GL

D-4 Change 6

TM 5-5420-226-10


(1)

ITEMNUMBER

32

33

34

35

(2)

LEVEL

(3)IIATIONAL

STOCKNUMBER

6850-00-660-5685

6850-00-281-1985

BOIO-OO-242-2089

8030-00-530-5234

9505-oo-584-4843

(4)

DESCRIPTION

SOLVENT, DRY CLEANING (SD):1 QT CAN(81348)

SOLVENT, DRY CLEANING (SD):1 GAL CAN(81348)

THINNER, PAINT(TDN):l GLCAN(81348) TTT291T1GA

THREAD COMPOUND, ANTISEIZEAND SEALING: 1 LB CAN(81349) MIL-T-5542

WIRE, NONELECTRIC(MS20995-F41)

(5)

J/M

QT

GL

s GL

LB

LB

TA248682

Change 1 D-5/(D-6 blank)

TM 5-5420-226-10

A P P E N D I X E

STOWAGE AND SIGN GUIDE

1. SCOPE

This appendix shows the locations for stowage of equipment andmateriel required to be carried on the M48A5 AVLB.

2. GENERAL

The figures below and on the next pages show the location of decals,stencils, and metal signs used on the vehicle. Most of these signs markthe places where equipment should be stowed. Some are cautions orinformation you need to operate the vehicle safely.

N O T E

Signs outlined with boxes aredecals, applied in locationsshown to read from angleshown. Signs not outlinedwith boxes are stencils.

TA106427

E-1

TM 5-5420-226-10

E-2

TM 5-5420-266-10

E-3

TM 5-5420-226-10

E-4

TM 5-5420-226-10

E-5/(E-6 blank)

TM 5-5420-226-10

APPENDIX F

LUBRICATION INSTRUCTIONS

F-1. SCOPE

This appendix provides crew lubricationtion or hard time) are based on normalconstant use or in severe conditions.

F-2. GENERAL

instructions. Lubrication intervals (on-condi-operation. Lubricate more often during

All lubrication instructions are mandatory.

Use only authorized lubricants.

Interval symbols used are: B - Before Operation, A - After Operation, M - Monthly,and AR - As Required.

For multiple lubrication points, capacity is for each point.

For equipment under manufacturer’s warranty, hard time service intervals shall befollowed. Intervals shall be shortened if lubricants are known to be contaminatedor equipment is operated under adverse conditions.

Engine, transmission, and hydraulic system fluid levels are checked according tothis appendix, but drain and refill are subject to Army Oil Analysis Program(AOAP). If AOAP is not available, hard time intervals apply.

Hard (fixed) time intervals and the related man-hour times are based on normaloperation. The man-hours time specified is the time you need to do all the ser-vices prescribed for a particular interval. Change the interval if your lubricants arecontaminated or if you are operating the equipment under adverse conditions,including longer-than-usual operating hours. The interval may be extended duringperiods of low activity. If extended, adequate preservation precautions must betaken.

When checking fluid levels, vehicle must be on level surface.

Oil filters must be serviced/changed when they are known to be contaminated orclogged, service is recommended by AOAP, or hard time service is required.

Dispose of used lubricants in accordance with local Standing Operating Procedures(SOP).

If operating in 0°F to -65°F (-18°C to -54°C) temperatures without Army Oil Analy-sis, quarterly/750 mile transmission and engine oil changes are required.

For arctic operation, see FM 9-207.

For desert operation, see FM 90-3.

Clean all grease fittings before attaching grease gun. Operategrease appears at seal or relief valve. Check escaping greaseNotify organizational maintenance if contaminated.

grease gun untilfor contamination.

Change 8 F-1

TM 5-5420-226-10

If no other treatment is directed, paint or clean and coat unprotected metal sur-faces with cleaner/lubricant/preservative (CLP) (item 7.1, Appendix D).

Clean around filler necks/drain plugs/openings before servicing to keep dirt fromentering system.

WARNING

Dry Cleaning Solvent P-D-680 is toxic and flammable. To avoidinjury, wear protective goggles and gloves and use in a well-ventilated area. Avoid contact with skin, eyes, end clothes, and donot breathe vapors. Do not use near open firs or excessive heat. Theflash point for Type I Dry Cleaning Solvent is 100°F (38°C), and forType II is 140°F (60°C). If you become dizzy while using DryCleaning Solvent, get fresh air immediately and get medical aid. Ifcontact with eyes is made, wash your eyes with water and getmedical aid immediately.

Use clean rag (item 29, Appendix D) and dry cleaning solvent (item 33, AppendixD) to clean grease or oil from all metal surfaces except those exposed to powderfouling. For powder-fouled surfaces, use CLP (item 7.1, Appendix D).

F-3. OIL CAN POINTS

Lubricate oil can points as they become accessible while performing PMCS proce-dures. Use the applicable lubricant identified and lubricate the following items as apart of PMCS:

Headlight removal nuts Grille door hingesFender stowage box latches Control rod clevises

and hinges Universal jointsTowing hooks (hinge pin) Ammunition box latchesBrake linkage Driver’s and commander’sTransmission support guide seats moving parts

rails and rollers Hatch locks and hingesDriver’s escape hatch Driver’s night viewer hatch

(clean and coat pins, door pivot pin and latchplungers, and all unpaintedsurfaces)

Oil Can Points Lubricants

For arctic operation, see FM 9-207

F-2 Change 8

F-4.

Do not lubricate the

Starter solenoidAir cleaner blower motor

TM 5-5420-226-10

following items:

Gas particulate fan motorTracks

Hydraulic powerpack electric Tachometer drive adaptermotor Ventilator blower motor

Heater motor Any item not pointed out.

SMOKE GRENADE LAUNCHER LUBRICATION

LUBRICANT INTERVAL

SMOKE GRENADELAUNCHER(See Note)

Temperature Range

Smoke GrenadeLauncher

All Temperatures

CLP

Smoke Grenade Launcher Lubricant

Lubricant Mil. Symbol(NATO Code)Specification

CLP(S-758)

MIL-L-63460

Capacity

AR B/A 0.2


F-5. SMOKE GRENADE LAUNCHER NOTE

a. Before Firing: Wipe all surfaces dry.

b. After Firing: Immediately clean with CLP (item 7.1, Appendix D) and wipe dry.Apply a light coat of CLP to all surfaces. Make sure all surfaces are coated.Do not wipe dry. After firing, repeat process for 2 days.

c. Inactivity: If not to be fired for an extended period, quarterly, clean with CLP(item 7.1, Appendix D), wipe dry and apply CLP to all surfaces.

Change 8 F-3

TM 5-5420-226-10

F-6. LAUNCHER RESERVOIR, ENGINE, AND TRANSMISSION CHECKS.

LUBRICANT INTERVAL

LAUNCHERRESERVOIR(See Note 1)

ENGINE(See Note 2)

TRANSMISSION(See Note 3)

Launcher Reservoir, Engine, and Transmission Lubricants


F-4 Change 8

TM 5-5420-226-10

F-7. LAUNCHER RESERVOIR, ENGINE, AND TRANSMISSION NOTES.

WARNING

C h a n g e 8 F - 5

TM 5-5420-226-10

F-7. LAUNCHER, ENGINE, AND TRANSMISSION NOTES - Continued

NOTE

Reverse side of dipstick has four hash marks. Distance betweeneach mark is 2 gallons (7.6 l). When dipstick indicates low oil level,use hash marks to determine amount of oil to add. Added oil will notbe indicated on dipstick until after engine has been running forseveral minutes.

Hot Oil Level Check (Engine has been operating for an extended period oftime.)If tactical situation permits, allow engine to idle at 700 to 750 rpm for 5to 10 minutes, then remove engine dipstick and note oil level. If oil levelis above “ADD” mark, engine is safe to operate. However, if current mis-sion is expected to be of a long duration, add oil, as required, to bring oillevel to “HOT FULL” mark. If oil level is below “ADD” mark, add oil asrequired to bring oil level to “HOT FULL” mark.If tactical situation does not permit running of engine for 5 to 10 minutes,allow engine to idle at 700 to 750 rpm and remove engine dipstick andnote oil level. If oil level is 2 to 3 inches (5.08 to 7.62 cm) above “HOTFULL” mark, engine is safe to operate. Indication of overfilled condition isnormal. This condition is due to oil expansion and aeration. If oil level isbelow “ADD” mark, add oil as required to bring oil level to “HOT FULL”mark.

Cold Oil Level Check (Engine has been operating at 700 to 1200 rpm for5 to 10 minutes.)Remove engine dipstick with engine idling at 700 to 750 rpm. If oil levelon dipstick is in “IDLING RANGE” (between "ADD" and “HOT FULL”marks), engine is safe to operate. If oil level is below “ADD” mark, add oilas required to bring level to “COLD FULL” mark.

F-6 Change 8

TM 5-5420-226-10

F-7. LAUNCHER, ENGINE, AND TRANSMISSION NOTES-Continued

Install dipstick in tube with dipstick loop facing hull. Close inner cover. Closeouter cover and secure with screw.

3. TRANSMISSION OIL LEVEL AND FILL. Transmission must be at operating tem-perature (gage panel indicator in green area) to obtain an accurate oil level-indica-tion. If indicator is not in green band and tactical situation permits, run engine at1000 to 1200 rpm with parking brakes set and shift lever in PARK until operatingtemperature is indicated. With engine at idle (700 to 750 rpm), open left rear topdeck grille door and remove transmission oil dipstick from tube. Wipe dipstick andinsert fully in tube. Remove dipstick from tube and note oil level on dipstick. If oillevel is below “FULL” mark on dipstick, add oil as required to bring oil level to“FULL” mark. Approximately 3 gallons (11.4 I) of oil will raise transmission oillevel from “ADD” mark to “FULL” mark. If oil level is at or above “ADD” mark ondipstick, transmission is safe to operate. Install dipstick in tube and close top deckgrille door.

Change 8 F-7

TM 5-5420-226-10

F-8. HYDRAULIC BRAKE MASTER CYLINDER CHECK.

LUBRICANT l INTERVAL

HYDRAULICBRAKEMASTERCYLINDER(See Note)

Hydraulic Brake Master Cylinder Lubricent


F-9. HYDRAULIC BRAKE MASTER CYLINDER NOTE

Remove filler cap. Check that fluid level is 1/4 inch (0.64 cm) from top ofopening. If fluid level is low, add fluid as required to attain proper level. Installfiller cap.

U.S. GOVERNMENT PRINTING OFFICE: 1996 746-014/20171

F-8 Change 8PIN: 048100-008

TM 5-5420-226-10

INDEX

SUBJECTA

Adjusting track tension . . . . . . . . . . . . . .Air cleaner engine servicing . . . . . . . . . . . .Air cleaner intakes, engine (see Intakes, engine air cleaner)Amplifier AM-1780/VRC, operation . . . . . . . .Antenna, tying down..... . . . . . . . . . .

B

Battery care and maintenance . . . . . . . . . . .Blackout drive lights (see Lights)Blackout marker lights (see Lights)Brake, parking (see Parking brake)Braking vehicle with engine . . . . . . . . . . . .Bridge

Launching . . . . . . . . . . . . . . . . . . .Retrieving . . . . . . . . . . . . . . . . . .

Bridge launching controls (see Launching controls, bridge)

C

Capabilities, equipment . . . . . . . . . . . . . .Centerguide, track, replacing . . . . . . . . . . .Cold weather, extreme

At halt and parking. . . . . . . . . . . . . . .General . . . . . . . . . . . . . . . . . . . .Maintenance . . . . . . . . . . . . . . . . .

Communications system, general . . . . . . . . . .Connecting track . . . . . . . . . . . . . . . .Control panel, master, controls and indicators . . .Controls and indicators

Bridge launching controls . . . . . . . . . . . . .Cupola cover . . . . . . . . . . . . . . . . .General . . . . . . . . . . . . . . . . . . . .Hydraulic reservoir. . . . . . . . . . . . . . .Hydraulic reservoir filter . . . . . . . . . . . .Indicator panel . . . . . . . . . . . . . . . .M24 periscope . . . . . . . . . . . . . . . . .Master control panel. . . . . . . . . . . . . .Periscope door assembly . . . . . . . . . . . .

Crew compartment drain valves . . . . . . . . . .Cover, cupola (see Cupola cover)Cupola cover

Controls and indicators . . . . . . . . . . . . .Operation . . . . . . . . . . . . . . . . . . .

Page

3-233-50

2-1262-129

3-40

2-134

2-1112-119

1-23-31

2-1312-1303-55

2-1263-272-15

2-122-92-1

2-192-202-132-102-152-182-91

2-92-83

TA106432

Index 1

TM 5-5420-226-10

INDEX - Continued

SUBJECT

D

P a g e

Data, performance . . . . . . . . . . . . . . .Designations; front, rear, right and left . . . . . . .Detailed description . . . . . . . . . . . . . . .Differences between models . . . . . . . . . . . .Disconnecting track . . . . . . . . . . . . . . .Domelights (see Lights)Door assembly, periscope

Controls and indicators . . . . . . . . . . . . .Drain valves, operation

Crew compartment . . . . . . . . . . . . . . .Engine compartment . . . . . . . . . . . . . .

Drive lights (see Lights)Drive lights, blackout (see Lights)Driving vehicle

Crossing ditch, shell hole, or trench . . . . . . .Downhill . . . . . . . . . . . . . . . . . .Flatgroud . . . . . . . . . . . . . . . . . .Over obstruction. . , . . . . . . . . . . . . .Uphill . . . . . . . . . . . . . . . . . . . .

Dust detector warning lamp . . . . . . . . . . . .Dusty or sandy areas

Maintenance . . . . . . . . . . . . . . . . . .Operation . . . . . . . . . . . . . . . . . .

E

EIR’s, reporting . . . . . . . . . . . .Emergency refueling . . . . . . . . . .Engine

Starting . . . . . . . . . . . . . .Stopping . . . . . . . . . . . . . .

Engine air cleaner intakesGeneral . . . . . . . . . . . . . . .Reversing intakes . . . . . . . . . .

Engine air cleaner, servicing. . . . . . .Engine compartment drain valves . . . .Engine smoke generator, operation . . . .Equipment description

Capabilities. . . . . . . . . . . . .F e a t u r e s . . . . . . . . . . . . . .Purpose . . . . . . . . . . . . . . .

Equipment improvement recommendations,(EIR) reporting . . . . . . . . . . .

1-91-81-81-8

3-25

2-18

2-912-91

2-1082-1112-1082-1092-110

2-1

3-572-134

1-13-37

2-1002-106

2-1312-132

3-502-91

2-158

1-21-21-2

1-1

Index 2 Change 2

TM 5-5420-226-10

INDEX - Continued

SUBJECT

Escape hatchControls . . . . . . . . . . . . . . . . . . . . .Installation . . . . . . . . . . . . . . . . . . . .Removal . . . . . . . . . . . . . . . . . . . . .

Extinguisher, fire (see Fire extinguisher, fixed or portable)Extreme cold weather

At halt and parking . . . . . . . . . . . . . . . .General . . . . . . . . . . . . . . . . . . . . .Maintenance . . . . . . . . . . . . . . . . . . .

Extreme hot weather. . . . . . . . . . . . . . . . .

F

Page

. . 2-6

. 2-156

. . 2-156

. . 2-131

. . 2-130

. . 3-55

. . 3-56

Features, equipment . . . . . . . . . . . . . . . . . . .Filler cap, fuel servicing . . . . . . . . . . . . . . . . .Filter, hydraulic reservoir

Controls and indicators . . . . . . . . . . . . . . . .Fire extinguisher, fixed. . . . . . . . . . . . . . . . . .Fire extinguisher, portable . . . . . . . . . . . . . . . .Fording

Before . . . . . . . . . . . . . . . . . . . . . . . .After . . . . . . . . . . . . . . . . . . . . . . . .

Forms and records, maintenance.. . . . . . . . . . . . .Front, rear, right and left designations . . . . . . . . . . .Fuel filler cap, servicing . . . . . . . . . . . . . . . . .Fuel tanks

Isolating . . . . . . . . . . . . . . . . . . . . . . .

1-23-35

2-202-85

2-129

2-1363-58

1-11-8

3-35

3-38

G

Gas-particulate filter unit, operating . . . . . . . . . . . . 2-159Gas-particulate filter unit, change criteria . . . . . . . . . 2-161General information

Maintenance forms and records . . . . . . . . . . . . . 1-1EIR’s reporting. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .. 1-1Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..1-1

Grenade Launcher(See Smoke Grenade Launcher)

Grille doors, top deck . . . . . . . . . . . . . . . . . . . 3-54

H

Hatch, escapeControls . . . . . . . . . . . . . . . . . . . . . ... . ... . . . . . . . . . ..2-6Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .2-156

TA271857

Change 1 Index 3

T M 5 - 5 4 2 0 - 2 2 6 - 1 0

INDEX - Continued

S U B J E C T P a g e

RemovalHeadlights, infrared (see Lights)Heater, personnel. . .Hot, humid or salty areas

Maintenance . . .Operation . . . . . .

Hydraulic reservoirControls and indicators

Hydraulic reservoir filterControls and indicators

Hydraulic system slaving

I

Indicator panelControls and indicators

Infrared headlights (see Lights)Intakes, engine air cleaner

GeneralReversing . . . . . . . . . . .

Intercom set, C-2298/VRC . . . .Isolating fuel tanks . . . . . . .

LLamp j replacement

Blackout drive . . . . . . . .Blackout marker . . . . . . . .Domelight . . . . . . . . . .

Dust detector warning . . . . .Headlights . . . . . . . . .Instrument panel cluster assemblyMaster control panel . . . . . .Powerplant warning . . . . . .Taillight . . . . . . . . . . .

Launching bridge. . . . . . . . .Launching controls, bridge . . . .Lights

Blackout driveOperation. . .Replacement .

Blackout markerOperation . . .

2-156

2-92

3-572-134

2-19

2-202-147

2-13

2-1312-1322-1283-38

3-413-413-43

3-44.13-413-453-443-443-42

2-1112-12

2-883-41

2-88

Index 4 Change 2

TM 5-5420-226-10

INDEX - Continued

SUBJECT

Replacement . . . . . . . . . . . . .Domelights

Operation . . . . . . . . . . . . . .Replacement . . . . . . . . . . . . .

HeadlightInstall . . . . . . . . . . . . . . . .Operation . . . . . . . . . . . . . .Remove . . . . . . . . . . . . . . .Replacement . . . . . . . . . . .Stowing . . . . . . . . . . . . . .

Infrared headlightsOperation . . . . . . . . . . . . . .

PanelOperation . . . . . . . . . . . . . .Replacement . . . . . . . . . . . . .

ParkingOperation . . . . . . . . . . . . . .

Service driveOperation . . . . . . . . . . . . . .

Service StoplightOperation . . . . . . . . . . . . . .

TaillightReplacing . . . . . . . . . . . . . .

Location and description of major componentsLubrication instructions. . . . . . . . . .

MM24 periscope

Controls and indicators . . . . . . . .

Page

3-41

2-903-43

2-1632-87

2-1623-41

2-162

2-89

2-903-44

2-90

2-86

2-87

3-421-33-1

2-10Installation . . . . . . . . . . . . . . . . . . . . . . 3-45Operation . . . . . . . . . . . . . . . . . . . . . . 2-94Removal . . . . . . . . . . . . . . . . . . . . . . . 3-47Replacing head . . . . . . . . . . . . . . . . . . . . 3-49

M239 Smoke Grenade Launcher(see Smoke Grenade Launcher)

Maintenance under adverse conditionsAfter fording . . . . . . . . . . . . . . . . . . . . . 3-58Extreme cold weather. . . . . . . . . . . . . . . . . 3-55Extreme hot weather . . . . . . . . . . . . . . . . . 3-56General . . . . . . . . . . . . . . . . . . . . . . . 3-55High humidity, or salty atmosphere . . . . . . . . . . . 3-57Sand, dust, or mud . . . . . . . . . . . . . . . . . . 3-57

Marker lights, blackout (see Lights)Maintenance forms and records . . . . . . . . . . . . . . 1-1Major components, location and description . . . . . . . . . 1-3Master control panel . . . . . . . . . . . . . . . 2-15Measuring track drive sprocket wear . . . . . . . . . . . . 3-25

Index 5

TM 5-5420-226-10

INDEX - Continued

SUBJECTN

Page

Night vision viewer, AN/VVS-2Controls and indicators. . . . . . . . . . . . . . . . . 2-12Installing . . . . . . . . . . . . . . . . . . . . . . 3-50Operating . . . . . . . . . . . . . . . . . . . 2-94.1Removing . . . . . . . . . . . . . . . . . . . 3-52.3

O

Operating auxiliary equipmentAmplifier AM-1780/VRC. . . . . . . . . . . . . . . . 2-126Communications systems. . . . . . . . . . . . . . . . 2-126General . . . . . . . . . . . . . . . . . . . . ...2-126Intercom set C-2298/VRC . . . . . . . . . . . . . . . 2-128Portable fire extinguisher . . . . . . . . . . . . . . . 2-129Tying down antenna. . . . . . . . . . . . . . . . . . 2-129

Operation under unusual conditionsBraking vehicle with engine . . . . . . . . . . . . . . 2-134Engine air cleaner intakes . . . . . . . . . . . . . . . 2-131Extreme cold weather . . . . . . . . . . . . . . . . 2-130.10Fording . . . . . . . . . . . . . . . . . . . . ...2-136General conditions . . . . . . . . . . . . . . . . . 2-130.10Dusty or sandy areas . . . . . . . . . . . . . . . . . 2-134Hot, humid, or salty areas . . . . . . . . . . . . . . . 2-134Remove/install/escape hatch . . . . . . . . . . . . . . 2-156Slave Start . . . . . . . . . . . . . . . . . . . . ...2-139Slave hydraulic system. . . . . . . . . . . . . . . . . 2-147Tow disabled vehicle . . . . . . . . . . . . . . . . . 2-143Tow start . . . . . . . . . . . . . . . . . . . ...2-142

Operation under usual conditionsAdjust seat . . . . . . . . . . . . . . . . . . . . . . 2-84Blackout drive lights . . . . . . . . . . . . . . . . . 2-88Blackout marker lights. . . . . . . . . . . . . . . . . 2-88Cupola cover . . . . . . . . . . . . . . . . . . . . . 2-83Domelight . . . . . . . . . . . . . . . . . . . . . . 2-90Drain valve, crew compartment. . . . . . . . . . . . . 2-91Drain valve, engine compartment . . . . . . . . . . . . 2-91Drive vehicle . . . . . . . . . . . . . . . . . . 2-108Fixed fire extinguisher. . . . . . . . . . . . . . . . . 2-85Headlight, hi or low beam . . . . . . . . . . . . . . . 2-87Infrared headlights . . . . . . . . . . . . . . . . . . 2-89Launching bridge . . . . . . . . . . . . . . . . ...2-111M24 periscope . . . . . . . . . . . . . . . . . . . . 2-94

Night vision viewer, AN/VVS-2 . . . . . . . . . . . . . 2-94.1Panel lights . . . . . . . . . . . . . . . . . . . . . 2-90Parking brakes . . . . . . . . . . . . . . . . . . . . 2-95

Index 6 Change 2

TM 5-5420-226-10

INDEX - Continued

SUBJECTP

Page

Parking lights . . . . . . . . . . . . . . . . . . . . 2-90Personnel heater . . . . . . . . . . . . . . . . . . . 2-92Place vehicle in motion . . . . . . . . . . . . . . . . 2-105Retrieving bridge . . . . . . . . . . . . . . . . 2-119Service drive lights . . . . . . . . . . . . . . . . . . 2-86Service stoplight . . . . . . . . . . . . . . . . . . . 2-87Shifting transmission . . . . . . . . . . . . . . . . . 2-96Starting engine ... ..... . . . . . . . . . . . . . ... . . . . . . . ... 2-100Steering vehicle . . . . . . . . . . . . . . . . 2-98Stopping engine . . . . . . . . . . . . . . . . . 2-106Stopping vehicle . . . . . . . . . . . . . . . . 2-106

Operator's controls and indicatorsBridge launching controls . . . . . . . . . . . . . . . . 2-12Cupola cover . . . . . . . . . . . . . . . . . . 2-9Dust detector warning lamp. . . . . . . . . . . . . . . 2-1 General . . . . . . . . . . . . . . . . . . . 2-1Hydraulic reservoir . . . . . . . . . . . . . . . 2-19Hydraulic reservoir filter . . . . . . . . . . . . . . . . 2-20Indicator panel . . . . . . . . . . . . . . . . . 2-13M24 periscope . . . . . . . . . . . . . . . . ... 2-10Master control panel. . . . . . . . . . . . . . . . . .2-15Night vision viewer, AN/VVS-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Periscope door assembly . . . . . . . . . . . . . . . .2-18

Panel lights (see Lights)Parking brake

Applying . . . . . . . . . . . . . . . . . . . . . .. 2-95Releasing . . . . . . . . .... . . . . . . . . . . 2-95

Parking lights (see Lights)Performance data . . . . . . . . . . . . . . . . . .1-9Periscope door assembly . . . . . . . . . . . . . . . . . 2-18Periscope, M24

Controls and indicators . . . . . . . . . . . . . . . . 2-10Installing . . . . . . . . . . . . . . . . . . . . . 3-45Operation . . . . . . . . . . . . . . . . . . . . . . 2-94Removing . . . . . . . . . . . . . . . . . . . . . . 3-47Replacing head . . . . . . . . . . . . . . . . . . . . 3-49

Personnel heater . . . . . . . . . . . . . . . . . . . . . 2-92Placing vehicle in motion. . . . . . . . . . . . . . . . . 2-105Portable fire extinguisher . . . . . . . . . . . . . . . . . 2-129Preventive maintenance checks and services. . . . . . . . . 2-21Purpose, equipment . . . . . . . . . . . . . . . . 1-2

R

Records, maintenance forms and . . . . . . . . . . . . . . 1-1

Change 2 Index 7

TM 5-5420-226-10

INDEX - Continued

SUBJECT Page

RefuelingEmergency . . . . . . . . . . . . . . . . . . . . . . 3-37

Pressurized source . . . . . . . . . . . . . . . . . . 3-35Reporting equipment improvement recommendations . . . . . 1-1Reservoir, hydraulic (see Hydraulic reservoir)Reservoir filter, hydraulic (see Filter, hydraulics reservoir)Retrieve bridge . . . . . . . . . . . . . . . . . . ...2-119

S

Scope . . . . . . . . . . . . . . . . . . . . . . . .Seat

Adjusting forward and backward . . . . . . . . . . .Adjusting height . . . . . . . . . . . . . . . . . .

Service drive lights (see Lights)Service stoplights (see Lights)Shifting transmission. . . . . . . . . . . . . . . . . .Slave starting . . . . . . . . . . . . . . . . . . . . .Slaving hydraulic system . . . . . . . . . . . . . . . .Smoke generator, operating . . . . . . . . . . . . . . .Smoke Grenade Launcher, M239

Ammunition . . . . . . . . . . . . . . . . . . . .Care, handling, and preservation . . . . . . . . . . .Cleaning dischargers . . . . . . . . . . . . . . . .Controls . . . . . . . . . . . . . . . . . . . . . .Destruction to prevent enemy use . . . . . . . . . . .Dud . . . . . . . . . . . . . . . . . . . . . . .Firing . . . . . . . . . . . . . . . . . . . . . . .Hangfire . . . . . . . . . . . . . . . . . . . . . .Identification . . . . . . . . . . . . . . . . . . . .Loading . . . . . . . . . . . . . . . . . . . . . .Misfire . . . . . . . . . . . . . . . . . . . . . .Stowing grenades . . . . . . . . . . . . . . . . . .Unloading grenades . . . . . . . . . . . . . . . . .

Sprocket wear, measuring . . . . . . . . . . . . . . . .Start engine . . . . . . . . . . . . . . . . . . . . . .Steering vehicle . . . . . . . . . . . . . . . . . . . .Stopping engine . . . . . . . . . . . . . . . . . . . .Stopping vehicle . . . . . . . . . . . . . . . . . . . .Stowing headlight . . . . . . . . . . . . . . . . . . .

. 1-1

. 2-84

. 2-84

2-96 2 - 1 3 9

2-147 2 - 1 5 8

4-14-3

3-54.12-20.1

4-2 2-130.5 2-130.3 2-130.5

4-22-130

2-130.53-54.3

2-130.63-25

2 - 1 0 02-98

2 - 1 0 62-1062-162

TA248678

Index 8 Change 1

SUBJECT

TM 5-5420-226-10

INDEX - Continued

Page

T

Thrown track, replacing. . . . . . . . . . . . . . . . . .Top deck grille doors operation . . . . . . . . . . . . . .Tow starting . . . . . . . . . . . . . . . . . . . . . .Tow a disabled vehicle . . . . . . . . . . . . . . . . . .Track

Adjusting tension . . . . . . . . . . . . . . . . . . .Connecting . . . . . . . . . . . . . . . . . . . . . .Disconnecting . . . . . . . . . . . . . . . . . . . .Installing track link . . . . . . . . . . . . . . . . . .Measuring track drive sprocket wear. . . . . . . . . . .Removing track link . . . . . . . . . . . . . . . . . .Replacing center guide . . . . . . . . . . . . . . . .Replacing thrown track . . . . . . . . . . . . . . . .Replacing track pad. . . . . . . . . . . . . . . . . .

Track linkInstallation . . . . . . . . . . . . . . . Removal . . . . . . . . . . . . . . . . . . . . . . .

Track pad, replacement. . . . . . . . . . . . . . . . . .Transmission, shifting . . . . . . . . . . . . .Troubleshooting . . . . . . . . . . . . . . ..Tying antenna down . . . . . . . . . . . . . .

V

Valves, drain (see Drain valves)

U.S. GOVERNMENT PRINTING OFFICE: 1987 185-611/60725

3-333-54

2-1422-143

3-233-273-253-303-253-293-313-333-32

3-303-293-322-96

3-1 2-129

TA271859

C h a n g e 1 Index 9/(Index 10 blank)

PIN : 048100-000

tm 5-5420-226-10 m48a5

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