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matter.Theinformationcontainedinre-

tialcharacteristicsofrestrictedmaterielmay

beintheserviceof theUnitedStates

tyanddiscretionwho arecooperatingin

ecommunicatedtothepublicor tothepress

blicrelationsagencies.(Seealsoparagraph

942.)

M

P u b l i c D o m a i n ,

G o o g l e - d

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AGEM10A1

e

MotorCompany)

TRUCTIONS

a3-45-11

2-28

c-

9

cle25-30 47-53

TENANCEINSTRUCTIONS

location31-3254-62

n-

p-

12

131

111-114160-162

duni-

atter.Theinformationcontainedinre-

tialcharacteristicsofrestrictedmaterielmay

beintheserviceof theUnitedStates

tyanddiscretionwho arecooperatingin

ecommunicatedtothepublicor tothepress

blicrelationsagencies.(Seealsoparagraph

42.)

31G,20Nov.1942.

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AGEM10A1

ansmission,dif-

4

131

36-139

40-142

ingof

ingof

ount.164-168

-172

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A1

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AGEM10A1

heinformationandguidanceof

chargedwiththeoperationandmain-

onsofthemajorunits andtheir

roperation,inspection,minorrepairs,

hroughVIIcontaininformation

ingpersonnel.SectionsVIIIthrough

edchieflyfortheguidanceofper-

maintenancework.SectionsXXII

ationonarmamentfortheoperating

ustmentsarebeyondthescopeof

attemptthem.Notifyresponsible

nedpersonnelandsuitableequip-

nstructionsissued.

tof eachmotorvehicleissuedby

ispurpose,theMotorBookfor

55),generallycalled"LogBook,"

ust accompanyitatalltimes.This

ofthevehicle,fromwhichvaluable

onandmaintenancecosts,etc.,isob-

ndersmustinsistthatcorrectentries

lybe keptinacanvascoyertopre-

Thepagebearingarecordof assign-

enteringthecombatzone.Allother

egardingtheidentityofthe organiza-

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TEDDATA

E.

rCarriageM10A1is anar-

oweredbya500-horsepowerFord

r,liquid-cooled,V-typeenginede-

engineislocatedin therearofthe

sofa3-inchGun M7,inanopentop

chis mountedontheall-weldedhull

craftmachinegunismountedatthe

sistentuseofslopingsurfacesonboth

vulnerabilityofthevehicleto

no revolvingturretplatform

.

dbymeansof levers,which

ecedifferentialhousing.Brakingis

ringbrakeleversat thesametime.

beenused.In theoriginaldesign,the

on thetransmissionoutputshaft

nsoflockingthe steeringbrakes

their useasparkingbrakes.The

eforwardspeedsandonereverse.

sequippedwitha2-wayradio

withanintravehicletelephonesystem

wwith theexceptionoftheloader.

cialpintlehookat therearof

achinga 2-wheelammunitioncart

ntthesupplystowedwithinthe

iaryarmor,water,fuel,and

aIb

ivehousing)T...17%in.

3in.

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TEDDATA

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AGEM10A1

m

8

es1,740Ib

tperiods2,800rpm

eiving

ir-typeseats,equippedwith

erand assistantdriver.Round,

e,are providedfortheloaderand

traverse.

eel).

-

ng:

r

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A

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AGEM10A1

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TEDDATA

rs:

h

h

26 mph

dspeed(onhardroad) ..26mph

s28mph

ed2,800rpm

0rpm

ty50percent

lity50percent

willcross7ft 5in.

hasawall,thatvehiclewithrub-

limbover18 in.

estspeed)36in.

entialandfinaldrive)152qt

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AGEM10A1

entsandcontrols5

NINSTRUMENTSANDCON-

panelislocatedonthe leftsponson

n figure6,andincludesthefollow-

itbreakerbuttonsareprovided

heinstrumentpanel.Thesebuttons

reakerswhichtakethe placeofthe

ncewhenthesecircuitsareover-

en.Thereis littlereasonforthe

erwhichbuttoncontrolsaspecific

actionofasecondtopressall seven.

otheleftof theignitionswitch

dwhichoperatesthecarburetorde-

oppingtheengine,alwayspushthe

onuntilthe enginestops.Thisshuts

plywellsin thecarburetorsand

donebeforeturningtheengineoff.

letsthatpermit pluggingin

tthe topoftheinstrumentpanel.

clock,anammeterisprovided

schargetoa100-amperecharge.If,

ttlecurrentisbeing used,theam-

harge* eitherthegeneratorregulatoris

neratoritselfis atfault(par.71d).

eingcharged.Theseunitsshould

eventfailureduringoperation.Ifthe

0-amperecharge,thecurrentlimit-

neratorregulatorsprobablyisatfault.

rsonneltoavoidburning outthe

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sestwo4-cylinder"Bosch"mag-

positionswitchin thecenterofthe

the switchleverisallthe wayto

enthe switchleverisatthe posi-

gnetoonlyison,and theenginewill

sonly (leftorrightis asviewed

nfacingthesamedirectionasthe

tionswitchleveris attheposition

netoisonandthe enginewillrunon

y.

ammeter,avoltmeterhavinga

ided.Whenthebatterymasterswitch

helowerendof thescale.Whenthe

shouldread batteryvoltage(ap-

ngis lowwiththeenginenotrun-

beingused,thebatteriesarelowin

Atnormaloperatingspeedsduring

evoltageshouldnotexceed30volts.

,thegeneratorregulatorprobablyis

Notifyordnancemaintenanceper-

generator.

h.Theblackoutdrivinglightmay

drivingwhentheservicedriving

thevehicle.First,removeboth

ketsatthe frontofthevehicle;then

inthe lampsockets.Theselamps

ndthedriverandassistantdriver's

GHTS"pulledouttofirst position,

witchbutton,toturnondriving light.

amps,taillamps,andstoplight will

position.CAUTION:Underbattle

ightshouldbeusedintermittently

aryforsafevision.

ftheblackoutdriveswitch,a

e batterymasterswitchonand

ecircuitiscompletedthroughthe

ngmotorcircuitandcausesthe start-

slocatedontheright-handside

tlestop screwonthecarburetor

ginewillidleat 500revolutionsper

ximumspeedoftheengineis gov-

rlocatedattherearofthe right-hand

tto limittheenginespeedto 2,600

loadwith wideopenthrottle(10-

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A1

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LS

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AGEM10A1

nunderfullloadit ispossibletorun

volutionsperminute,orif thegov-

ointbelow2,600revolutionsper

cepersonnelwillbenotified.Ifthe

mpossibleto getmaximumspeed

governorissettoohigh,damage

partscouldresult.

instrumentpanelmarked

ghtsandtheblackoutdrivinglights.

preventstheknobfrombeingacci-

ackoutposition.Toreleasethe safety

humb,atthesametimecontinuing

hthefirstand secondfingers.The

esoff)controllingthelights asfol-

RATING

nal isprovidedontheright side

etectorconsistsof a32-candlepower

wirefro'mthisbulbruns backto

everalthermalswitcheswillcauseit

egroundingofthis wirecompletes

theresultthatthered lightgoeson

)warningthe operatorofthefire

a (1)(m)).

e detectorcircuittestlightis

nalandconsistsof a3-candlepower

Useof thistestlightis explained

oggleswitchlocatedtothe right

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ghtpermitstestingthefire detector

edup,the wirerunningfromthe

nitsisgrounded,and thegreensignal

erswitchmustbeon).Ifthe green

witchis pressedup,thefiredetector

reakeris open;pressthecircuit

gnalcircuiton theinstrumentpanel

rinstrumentpanellightsare

sare turnedonoroffand their

light rheostat.

reGage.Anoiltemperaturegage

25F indicatesthetemperatureof

rmaloperation,thetemperatureofthe

d200F.The mostcommoncause

thetransmission.Checkthelevel

l levelgageindicateswhethersuf-

eoilpan.Aslong astheoillevel gage

eoillevelis satisfactory.Whenthe

ilshouldbeaddedto bringtheoil

L"markonthebayonetgage atrear

eoil pressuregageislocatedbe-

operatingtemperatureswiththe

2,600revolutionsperminute),the

and80pounds.Theoilpressure

decreased.Ifduringoperationthe

maybeduetoa changeinthevis-

ng.Checkenginetemperature.

e leftoftheoil pressuregage,

signalsthedriverwhentheoil pres-

rovided.

erislocatedinthecenterofthe

ndis equippedwithatripmileage

mentpanel.

ftofthespeedometer,aredplastic

iverwhen thetemperatureinthe

rovided.Shouldthissignal light,

dcorrectcauseof overheating(par.

totheenginemay result.

heenginetemperaturegageis

meterandiscalibratedfrom100to

nlywhenthebatterymaster switch

thehotend ofthegagewhenthe

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AGEM10A1

ystemis sealedandnotopento

sultthattheboiling pointofthe

eatingactuallydoesnotoccuruntila

35Fisreached.Innormaloperation

sabove60Fundermaximumpower

netemperatureshouldnotbegreater

dingtemperature.

vencircuitbreakerbuttons,an

ndrewindingknobis locatedatthe

Switch.Inthe lowerleft-hand

electorswitchand fuellevelgage

velineachof thefourfueltanks.

ons.Withtheselectorswitchin off

read"E"(empty).Tocheckthefuel

tchtotheleft to"R."Tocheckthe

witchalltheway totheleftto "L."

rtank,turnswitchto therightto

t reartank,turnswitchallthe way

Totheleftof theclock,a5-posi-

usedtoturnthe panellightsonor

rkadvancecontrolisentirelyauto-

ythe operatorofthevehicle.

rottlepedalislocatedonthefloor

enienttothedriver'srightfoot.

unctionwiththefootpedal,ahand-

ehandthrottleis bracket-mountedto

vethefootthrottle.Presson thefoot

handthrottle.Alockbuttonis located

button.Thislockbuttonholdsthe

ng.Toclosethehandthrottle,press

ngpumpislocatedon thefront

t.Tooperatethepriming pump,the

ackin.Thiscausesaquantityof gaso-

eintakemanifoldforcoldweather

d inplaceoftheconventionalchoke.

rytousetheprimerexceptduring

oftheenginewillcausefloodingand

solinewillwashtheoilfrom the

thecylinderswillnotbeproperly

ts circulating.

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AGEM10A1

HET

ctableRatchetsforHolding

teeringleversaremountedonthe

edriver'sseat.Tosteer thevehicle,

etowardwhichitis desiredtoturn.

versslowsdownthetrackonthat

rtrackisincreased.

gbacksimultaneouslyonbothsteer-

hevehicle,dependingontheeffort

typesofparkingbrakeshave

otorCarriageM10A1asfollows:

esignprovideda parkingbrake

river,atrearof thetransmission

atransmissiontypebrakeand

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LVE

VE

LVE

ALVE

rposeotherthanparking.Alwaysbe

eleased(allthewayforward),before

inchgun motorcarriagesthe

withapawl thatoperatesonretract-

eratchetsareraised bypressing

anddown.Thispermitsthe steering

hetteethholdingtheservicebrakes

ervicebrakes,pull backonboth

etpedal forwardanddown.This

the servicebrakesarereleased.

rdpedalis allthewaydownbefore

eclutchpedalislocatedonthe

nvenienttothedriver'sleftfoot.To

his disengagedbydepressingthe

eclutchpedalfree playbecomes

dalshouldbeadjusted(par.115d).

(fig.9).Fourshut-offvalves(one

thebulkheadtotheleftrear ofthe

TCH(fig.10).Thebatterymaster

30inchestotherear ofthedriver's

hewaydown.Toturn off,raisethe

nchandturnsothatswitchstaysin

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AGEM10A1

OLENOIDCIRCUITBREAKER

asterSwitcheslocation

hisoff,allelectricalpoweris shutoff

nofthepowerusedbytheradio

adio masterswitch).Ifindoubt

witchis onoroff,thefollowingcan

rymasterswitchison,thevoltmeter

s.Whenthebatterymasterswitchis

e16-voltmark.Alsowhenthebattery

gagewillindicatetheoil leveland

.

H(fig.10).Theradiomasterswitch

erymasterswitchand turnsonand

efor thebatterymasterswitch.

UITBREAKER(fig.53).Acircuit

opensthe circuitofthegunfiring

ecomeoverloaded.Thebuttoncon-

0)is locatedontopofthe battery

rswitch.Pressingthisbutton will

7).

inthe transmissionforspeed

earshiftlever,locatedontheleft side

ofthedriver.Thepositionsofthe

edsare showninfigure11.Thegear-

chwhichpreventsaccidentalshifting

atchmustbereleasedbypressing

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AGEM10A1

TROLS]

ILLERCAP

LERCAP

ER~CAP

LERCAP

rs

whenpulledout, opensonefixed

controlopenstheotherextinguisher.

mentwithcarbon-dioxidegas,and

ginerunningupto 1,200revolutions

however,stoptheengine.

opesareprovidedforthedriver,one

isleft, mountedinthehulltop plate.

antdriver'sdoor.Each periscopeis

chpermitsvision inanydirection.

d toraiseorlowerthe lineofvision.

themountsstationarywhendesired.

nitsmount byaknurlednuton the

copehousingpreventsthedevicefrom

omesloosened.Twospareperiscopes

nboxesmountedontop ofthetrans-

ON.

clehasa crewoffivemenand

zedin inspectionofthevehicleunder

mander.Theinspectionshouldcover

(par.19).

NS.

tartthe engine,familiarize

nstrumentsandcontrols(par.5).

achinstrumentandcontrolisthor-

gnificanceofthe readingsonthe

ed.

e40F).Open fuelshut-off

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rswitchon(par. 5b(10)).Put

Depressfootthrottle(fig.7)and

-fourthinch.Turnignitionswitch

gineis cold,usethreetofivestrokes

starterbutton.Engineshouldstart

eeparagraph36.Ifenginestarts but

trokesofthefootthrottlejust before

running.

40F).Openfuelshut-off

rswitchon(par. 5h(10)).Put

Depressfootthrottleandpull

hinch.Turnignitionswitch(fig. 6)

ngineusingthreeto fivestrokesof

ssstarter buttonatsametimehold-

nuntilenginestarts.Asenginestarts,

mingpumpagain;alsotwoor three

assist inkeepingenginerunningby

nginefails tostartseeparagraph36.

heckoilpressure(par.5a (1)

isnotindicatedin30 seconds.Check

tcheswhileengineisidling.Idle

gagereadsabove100F.When engine

ottleto600 revolutionsperminute.

.5a (1)(e)) andcomparetachom-

iththereading obtainedwhenboth

ionsperminute).If,whenrunning

heenginespeeddropstolessthan

auseshouldbe investigated(par.

toreestablishnormalidlingspeed.

esetto idleengineat500revolutions

veridleengine atlessthan500

nemust beallowedtooperate

2minutestoassurea gradualand

othervariousengine parts.Tostop

hbuttonin untilenginestops;then

n.

LE.

reattemptingtodrivethe

ouldbethoroughlyfamiliarwithall

nceoftheirreadings(par. 5a).He

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AGEM10A1

perationofthe controlsinhiscom-

agraph4 kwillbehelpful.The

arecoveredunderparagraph4 1.

ginewiththefueltanksfull ofcold

three orfourgallonsoffuel from

ansionspaceforthefuelasits tem-

heengine.Generallyspeaking,3or

idesufficientexpansionspace.With

llinstrumentsshowingnormalread-

he vehicle.

Releaseparkingbrake(par.

essingclutchpedal(fig.7)downto

Movegearshiftleverintosecondgear

ation.(Firstgear willbeusedonly

sorover obstacles.)Gradually

medepressingfootthrottle.

movethevehicleinorout of

ersonneloutside ofthevehicle

ersonnelordamagetothe vehicle,

bothturrettraversinglocksare

gmechanism,althoughitactsasan

otbyitselfstrongenoughto lock

larlyoverroughterrain.If thetra-

usetheprimarylocksarenotengaged,

andstriketheheadsof thedriving

ossiblyfurtherdamagetothe

lehasstartedand ismoving

utionsperminute,releasefoot throt-

vegearshiftleverintothird gear

ndepressfootthrottletopickup the

procedureuntilthehighestgear

ehicleto proceedatthedesired

tolabor.Do notridetheclutch.

etelyremovedfromtheclutchpedal

arywearandburningoutthe clutch.

edwhenthefreetravel dropsto2

ethevehiclein'reversegear,

osethrottleuntil thetachometer

(lowestidlingspeed).Depressclutch

the reverseposition(fig.11).Back-

attemptedunlessanobserverissta-

r.

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e vehicle,pullbackright-

ghtturn,orleft-handleverfor aleft

konthe insideoftheturnand

river shouldanticipateeachturn

erasitis neededtocompensatethe

befreeof thesteeringleverwhen

rlugengine below1,000revo-

throttle.Shifttoalowergear (fig.

andengine temperaturefrequently.

tbetakenwhiledescending

ughgearto controlthevehiclespeed

eptheenginespeed.Failuretofollow

ofthepropellershaft andtransfer

othe crew.Thefollowingcautions

dingasteepgrade.

lowthe propellershafttoreach

nthevehicleis inlowgear,every

willincreasethepropellershaftspeed

entarilyandthenengageit while

posingtoogreata loadonthepro-

controlthespeedof thevehicle.

eptheenginespeed,asindicated

imumallowablerevolutionsper

aximumallowableforthepower

volutionsperminute.

e vehicle,releasethrottle

versatthesametime.Depressclutch

ddowntoapproximately2to 5miles

gearis beingemployedbefore

atachometerreadingof500revo-

onofthehalt.

mentPanel.Thetachometer,

suregagegive themostsatisfactory

mance.Shouldtheindicationsofany

rregular,theengineshouldbe

d.

S.

ountedoneachcornerof the

esfromtheground.Twoofthese

twoin therear.Theseshackles

ngeithera towingbarorcables.

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AGEM10A1

herearetracksonthe vehicle

epropellershaftatthe transmission

ehicleinfifthgear.This procedure

etransmissionoilwhilethevehicle

ovedbeforetowingthevehicle,this

wing,thereareseveralprecautions

dtroubleorunnecessarydelay.

obemadeby aseriesofslightturns

asnearlyaspossible,directly

gthe towing.Thiswillpreventthe

whichmightdamageboththecable

groundis tobeavoided,sincethe

e.Ifitis necessarytocrossamuddy

o straightenoutbothvehicles

fficulttopull atananglethan when

ippedwithrubberblocktracks,

red.The maximumspeedwhen

12milesperhourand thenonlywith

ngthe towedvehicle.

ceptincaseswherea"short

wingcablewillnotbe coupledto

himbledeyesprovidedat both

harpbendsin thewireropewhich

andsandwillleavethe cableex-

ena"shorthitch"is desired,the

dtothetowingvehicle.Thecable

throughboth shacklesofthetowed

menthavingaminimumofbending

kles,andfurnishesclearancebetween

atorisavailabletosteerthe dis-

itatetrackingofthetowedvehicle.

t togetthecabletangledup with

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ALCONDITIONS

3

s17

NG.

Whenstartingthe enginein

ntto followthestartingprocedure

procedureisfollowed,fewaddi-

Brieflystated,coldweatherstarting

sultof poorpreparationormain-

ionto thecausesoffailuretostart

e attributedeithertotheengineoil

resencounteredorthebatteries

emperatures,abatterythat hasset

muchlowerthanatnormaltempera-

theengineis forcedtoturn

ze,oroil inthecylindersabovethe

ionorleakage),breakageofinternal

urntheengineoverthree complete

r totowing.Neveruseotherthan

e vehicletostarttheengine.

vetheignitionswitchoff.Towthe

missioninneutral(fig. 11)to

lineand tobreakthetrackloose

heclutchandplace thegearshift

hevehicleat1 mileperhourand

mittingittoslip) untiltwocomplete

enmade.If theenginewillnotturn

ontinueattemptingtostartand

rsonnel.

theenginehas beenturnedoveras

witchonand engagetheclutch.

o 5milesperhour(in fifthgear,

keswiththe primingpump.Ifthe

ph36.

MPERATURES.

atures,observetheenginetem-

watertothe coolingsystemasoften

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AGEM10A1

verheating.Theviscosityofthevarious

peratures.Besureoils arebeingused

emperature.Engineoilthinnedout

morerapidly.Checktheengineoil

TITUDES.

ringofcompressionduetolowered

spondingloweringofthedeveloped

osphere,asmallerquantityofairis

quantityoffuel remainspractically

ultsinthe fuelairmixturebeingtoo

y reducingthesizeofthevarious

obeoperatedcontinuallyathigh

evationsupto5,000feetpresentno

nsideredasnormal.

sunderextremelysandyroad

ingtheaircleanerasoftenasevery

deepenoughtoforcetheuseof lower

edspecifiedfor theparticulargear

YTERRAIN.

errain,inmud,or overiceand

notnormallypossible,grousersare

of track.Whenoperatingonslippery

ngagingclutchgradually;donot

eismovingatnormalspeed.Tracks

ycleanedofmud,snow,or ice.

TYCONDITIONS.

ountryon dry,dustyground

unninginthe dustcloudofother

enoperatinginsingle fileondusty

spacethe vehiclesfarenoughapart

chaspossibleifpracticable.Even

ken,itmaybe necessarytoclean

2hours(par.55).If theaircleaners

ismaintained,littledamagetothe

hand,iftheaircleanersrun dry,itis

n1houror less.

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EINSPECTIONSANDSERVICE

ice22

y,itisnecessarythatthevehicle

ervalseachdayitis operated,and

eredandcorrectedbeforetheyresult

ainscheduledmaintenanceservices

atedintervals.Theservicesset forth

medbydriverorcrew,before-operation,

er-operationandweekly.

eservicesarelistedontheback

ntiveMaintenanceServiceRecord

esofall typesandmodels.Items

otlistedon W.D.FormNo.48are

dertheitemswithwhichtheyare

eform thatdonotpertainto the

romtheproceduresaswritteninto

mustthoroughlyschooleachdriver

roceduressetforthinmanuals,

lyonW.D.FormNo.48 ornot.

mNo.48thatapplyto thisvehicle

rovidespecificproceduresforaccom-

ervices.Theseservicesarearranged

rvethetimeofthe driver,andare

ricalorderas shownonW.D.Form

ver,areidenticalwiththoseshown

temappliesalso toanysupport-

enerallyincludesachecktosee

dition,correctlyassembled,secure,or

tion"isusuallyan externalvisual

theunitisdamagedbeyondsafeor

dconditionisexplainedfurtherbythe

ted,notchafedor burned,notbroken

dentedor collapsed,nottornorcut.

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AGEM10A1

hatit is"correctlyassembled"is

iontoseewhetherit isinits normal

.

ermineifitis "secure"isusually

hand-feel,oraprybar checkfor

ouldincludeanybrackets,lock

,orcotterpinsusedin assembly.

derstoodtomeanworn,closeto

likelytoresult inafailureif not

edinspection.

peratingcharacteristicsbeyond

ectmustbereportedattheearliest

ividualinauthority.

VICE.

ignedprimarilyasa checktosee

mperedwith,orsabotagedsincethe

ormed.Variouscombatconditionsmay

foroperationandit isthedutyof

rnot thevehicleisinconditionto

isassigned.Thisoperationwillnot

metacticalsituations.

erviceconsistsofinspecting

eproceduredescribed,andcorrect-

Uponcompletionoftheservice,

tlytothe designatedindividualin

DAMAGE.Examinehull,armament,

necompartment,andturretfor evi-

NDDRIVES.Examineallaccessories

uelpump,starter,fansandshrouds,

tions,mountings,andforleaks.

ATER.Inspecttanks,fillercaps,lines,

nceofleaksortampering.Readfuel

landinspectwaterlevelinexpansion

L.Lookongroundundervehicleand

oil leaks.

tingthe engine,observeforproper

P.Closebatterymasterswitch.Am-

etermustread26to28 voltsto

penfueltankselectorvalvesand

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evolutionsperminutewithtrans-

peraturereadsabove100 F.

60 to80poundswhenengineis

rminute,andnotfall below11

immediatelyifredindicatorlights

hargingrate forfirstfewminutes.

periodwith allelectricalunits

batteryorfaultyregulator.

than30 volts.Excessivevolt-

houldriseslowlyduringwarm-up

opengineiftemperatureexceeds

aboveatmospherictemperature.

reGage.Readingmustbe120F

sionmustbeoperatedinneutral

topengineiftemperatureexceeds

cumulatedrevolutionsandop-

ing.Enginespeedmustnotexceed

rrectengineidlingspeedis500 revo-

ng,andindicatecorrecttime.

ecorrectamountoffuel ineach

rshouldremain ingreensector

ineand investigateifpointermoves

n forpropertoneiftacticalsitua-

situationpermits,turn alllight

ctalllightsto seethattheyareburn-

dthattheygooutwhenswitchesare

TS.Examinesprocketcapscrewsand

arepresentandsecure.

ttracksforevidenceoftampering

ioninspection.

USPENSIONS.Inspectbogiesuspen-

rsforanydamagesuchas shellfire,

ECTIONS.Towingshackles,pins,and

ndition.

ATOR.Mustbefully chargedand

minecontents.

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AGEM10A1

UIPMENT.Inspectalltoolsand

stowageandserviceability,usingthe

TANDFORMNo.26(ACCIDENTRE-

egible,andsafelystowed.

HER.Inspectportablefireextin-

ace,securelymounted,andthatseals

xtinguishersystemtosee thatpull

havenotbeenoperatedand that

esmustbe freefromobstructions.

ATION.Afterproperoperatingtem-

ifengineidlessmoothly.Accelerate

gfor excessivevibrationorunusual

ATIONSERVICE.Immediatelyafter

tthe during-operationservice.

VICE.

tenforanysoundssuchas rattles,

yindicatetrouble.Lookforindica-

mandsmokefromanypartofthe

anyodorofoverheatedcomponents

esorclutch,fuelvaporfromaleakin

signsof trouble.Anytimethebrakes

turned,considerthis atestand

ualperformance.Watchtheinstru-

lyunusualinstrumentindicationthat

stemto whichtheinstrumentapplies.

nservicesconsistofobserving

eproceduresfollowingeachitem,

sofserioustrouble.Noticeminorde-

tedatearliestopportunity,usually

KES.Applybothsteeringbrakesat

ess.Freetravelmustbe4to6 inches.

ingwithmoderateapplication.

Stopvehicleandapplyparkingbrake.

reasonableincline.

reetravelofpedal,whichmust be

easeandmustnot sliporchatter.

y releasebearing.

.Gearsmustshiftsmoothly,operate

Stopvehicleincaseof grindingor

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NTROLS.Notepowerwhenaccelerat-

on,misfiring,stalling,oroverheating.

mfullloadspeedis2,600revolutions

ter60 to80poundsat operating

orlight comeson.

argingrate forfirstfewminutes.

periodwith allelectricalunitsturned

yorfaultyregulator.

ormalreadingis60F aboveat-

readingexceed235F,stopengine

age.Readingmustnotexceed

ginespeedandaccumulated

orrectspeedandaccumulated

texceed30volts.

amountoffuel ineachofthe

estswitchto determinewhether

Greenlightshouldgo onifsystemis

rshouldremain inthegreen

thered sector,stopengineand

al shouldlightwhentemperature

F.If signallights,stopandinvesti-

NTINGS,ELEVATING,TRAVERSING,

hilethevehicleisinoperation,butbefore

alturrettraversingcontrolsandgun

esure thatallmechanismresponds

edasminimummaintenancepro-

underalltacticalconditionseven

nceservicesmustbeslightedor

onsistofinvestigatingandde-

n,inspectingitemslistedbelowac-

ngtheitems,andcorrectingany

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AGEM10A1

otcorrectedshouldbereported

dualinauthority.

S(HuesANDFINALDRIVES).Hand-

bogiewheels,and tracksupport

ot theyareabnormallyhot.

WATER.Determinequantityoffuel,

lyisadequateformission.Addif

estonesandothermaterial.Inspect

wornormissingconnectorsand

ordeadblocks.

USPENSIONS.Examinesuspensions

eanydebrislodged inbogieassem-

S.Examinesprocketcapscrewsand

arepresentandsecure.

AL.Examinebottomofhulland

eofanyleaks.Inspectthehull, fight-

mpartmentforfuel,oil,orwaterleaks.

CTIONS.Towingshackles,pins,and

ndition.

NDBELTS.Investigatepossiblecauses

ancenotedduringoperation.Ex-

terpumpforsecurityofmounting.

dcondition.

Whenoperatingunderextremely

rsasoftenasrequiredwhen tactical

elements.Cleanandreplaceoilif

ANDGLASS.Thoroughlyinspectex-

eerequipment.Inspectalll ightsand

y.Seethatallcoversandhatchescan

WEEKLYSERVICE.

cularlyimportantbecauseatthis

eto detectanydeficienciesthatmay

seheispermittedtohandle.He

ignatedindividualinauthoritythe

cheduleisperformedthoroughly,the

gainonamoment'snotice.Thebefore-

eptions,isthennecessaryonlyto

the sameconditioninwhichitwas

operationservice.Theafter-opera-

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elyomittedevenin extremetactical

he barefundamentalservicesout-

cessary.

theafter-operationservice,the

deranyirregularitiesnoticedduring

during-operation,andat-haltservices.

stsofinspectingandservicingthefol-

afteroperation"thatare markedby

lweeklyservices,theproceduresfor

aph(b)ofeachapplicableitem.

TION.Accelerateanddeceleratethe

missor backfire,oranyunusualnoise

ornparts,loose mountings,incorrect

eportanyunsatisfactoryperform-

Examineforsecurityofmountingand

AGE.Pullbacksteeringleversto

tleast4 inches.Whentravelis8

OLS.Lookforwornordisconnected

ateanyimproperactionofcontrol

n forpropertoneiftacticalsitua-

L.Withvehicleonlevelground,read

p dipstick,andaddoil ifnecessaryto

WATER.

Addoilto engineuntilgagereads

aterexpansiontankfillercaptofirst

eremovingcap.Beforeaddingwater,

d.Haveantifreezetestedif con-

dtobesure protectionisade-

.

AL.Examineallfuel,oil,andwater

askets,andtanksforleaks.Tighten

ofanyaccumulatedoil,water,orfuel.

hull,turret,andgunmountshield

drendervehicleunsafefor combat

operatefreelyandlocksecurely.

hasmud,stones,and sticksfrom

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AGEM10A1

ackconnectorsandwedges.Noteif

ppertracksupportrollers.

gessecurely.Examinetracks

cks,alsodeadblocks.Adjusttrack

betweenreartracksupportrollers.

USPENSIONS.

rabnormalsag andbreakage.

whentwoormorecoilscontactlower

wear,damage,andgreaseleaksof

emoveallstonesandtrash lodgedin

ckets,sprocketswheels,upper

andnuts,or capscrews.

ECTIONS.Examinetowingshackles,

eethattheyarein serviceablecondi-

operatesfreely.Lubricateif

WIRING.

dconditionandtightenallloose

wiring,lookingforlooseconnec-

RSANDBREATHERCAP.

ctelementsandconditionofoil.

efillwithoil to"LEVEL"markon

etsbeforeinstallation.

rsandbreathercapand refillair

.

and sediment.

wl.

SHER.Inspectportablefireextin-

ace,securelymounted,andthatseals

ngcapsonfixedfireextinguisher

rgedcylindersmustbereplaced.

dnozzles arefreefromobstruction.

ntingsmustbekeptcleanand

urthinchaboveplatesineachcell.

.Turnbatterymaster switchand

tercompletingservices.

minalconnections.Tightencon-

ifnecessary.

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UNMOUNTMECHANISMANDCON-

untravelinglock.Traverseturretfull

evateanddepressgun withhand

stoperatefreelyandwithoutbindor

limitoftravel.Tightenallloose wiring

toperationoffiringcontrolsandsight-

aned,properlyoiled,andcovered.

lsituationpermits,turnall light

ctalllightstosee thattheyareoperat-

mountedandgooutwhenswitches

ES.Cleanandinstallserviceable

required.Mountsmustpivotor rotate

ATOR.Mustbefully chargedandse-

inecontents.

E.Removeallexpendedmaterieland

hly.Cleanexteriorasnecessary,mak-

arevisible.

SNEEDED.

quiredwhenperformingafter-

tervalsandlubricantstobeused,refer

GuidesandsectionVI.

heduledlubricationifthisservice

QUIPMENT.

entforcondition,propermounting,

cleMaterielList.Replacemissing

uipment.Replaceitemsthat

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AGEM10A1

tioninstructionsfor3-inchGun

ishedfortheinformationandguid-

Referenceismadeto OFSB6-11

servicebelow0 F.Inthefield,i t

ompleteassortmentoflubricants

to meettherecommendations.It

useofthoseavailable,subjectto

ed,inconsultationwithresponsible

icationinstructionsforall

garmsareshowninWar Department

4),whichspecifiesthetypesof

alsatwhichthey aretobeapplied.

sreproducedare10-x 15-inchlam-

accessoryequipmentofeachpiece

lubricationguidesare bindingon

ingnotesapplytothelubrica-

notereferencesinthe guideitselfare

gthecorrespondingnumber.In

e,othersmallmovingparts,such

ricatedat frequentintervals.

lyinglubricant.

giewheels,idlerandtracksupport

eteradaptersuntillubricantoverflows

ngsuntilnewlubricantis forcedfrom

cified.

anbeseen,lubricateuntilnew

ng.CAUTION:Lubricatesuspension

rwashingvehicle.

atedarefornormalservice.For

t,water,sand,mud,snow,dust,etc.,

e-half,ormore,if conditions

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n..M10A1

NUMBERlocatedonnameplateinsidefightingcompartment.

E1

g

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AGEM10A1

n..M10A1

NUMBERlocat.donnamplat,insid.fightingcompartment.

NSIONSYSTEM

OTORCARRIAGE

*

LUBRICANTSTOBEUSED

er

MPERATURE

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enoperatingondirtroadsor cross

operatingonpavedroads orduring

llengineaircleanerwith used

nkcasegrade).Every100to500

nditions,removeaircleanerandwash

cleanerconnectionscleanand

movecrankcasebreathercap,wash

reoilwithusedcrankcaseoilor

opermaintenanceofaircleanersis

.

oillevel;addoilifnecessary.Every

ratingondirtroadsor crosscountry,

ingonpavedroads orduringwet

nlywhenengineis hot.Refillto

ocatedonrearofengineonleft side.

eindicatesoiliscirculating.To

ostandidlefor severalminutesbefore

ningtype andislocatedinthe

perationofself-turningmechanism.

omhousing,clean,andinspect.

eoperationofthefilter,remove

forend,andattach;thenrunthe

pressureatapproximately30

willrotateslowly ifthefilteris

e,replacethemanualturningnut

th lockwire.Iffilternutfails to

examination.

fromthe engine,removeengine

ethesixnutssecuringthefilterto

runit.

ashinginSOLVENT,dry-clean-

ansofthemanualturningnut while

element.Replacethefilterbyrevers-

ocedure.

rto markonbayonetgagewith

ipe(fig.15). Drainthroughtrans-

holes.Weekly,checklevelwith

ary,addlubricanttocorrectlevel.

tedatpointsonguide.Whendraining,

n.Every3,000miles,cleantrans-

N:Donotremovestrainerwhen

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AGEM10A1

ayonetGageandSpeedometer

ne-halfcapacitywithOIL,engine,

hincasesslowlyforseveralminutes

ndrefill casestocorrectlevelwith

G.Attimeofdisassemblyofclutchfor

ul,cleanandrepackbearingwith

.

llfourfuelline shut-offvalves,

edimentand water.Every1,000

inDieselfuelor SOLVENT,dry-

FTHOUSINGS.

nts.Fillerpluginhousing isfitted

markongage.Lubricateuniversal

ASE,generalpurpose(seasonal

nthesejoints;donot useexcessive

applyGREASE,generalpurpose

ubricantis forcedfromendof

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ALVES(6).

OORPLATE

FromtheRear

VEUNIVERSALJOINTSANDSLIPJOINT.

veruniversaljointsandslip jointat

slip joint,removeplugandinsert

purpose(seasonalgrade),touniversal

valve,andtoslipjoint untillubricant

UTION:Afterlubricating,remove

int.

ecoil,heavy.Capacityisapproxi-

rinstructionsonhandlingof recoil

refiring,cleanand oilexposedfin-

ecoveredwiththinfilmofOIL,

DPINION.Daily,cleanandapplyOIL,

ECHANISM.Dailyandbeforeandafter

partsandexposedmetalsurfaceswith

AUTION:Toinsureeasybreechop-

coldweather,cleanwithSOLVENT,

withOIL,lubricating,preservative,

removeandoperatepinin SOL-

firing,cleanand coatwithOIL,

50miles,lubricatesteeringandbrak-

andthrottlerodendlinkage,hinges,

handwheelhandles,traversingrace

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AGEM10A1

pivots,etc.,withOIL,engine(sea-

LUBRICATIONSERVICE.Thesepoints

pump,bogiewheelsuspensionlink-

.

DAND/ORLUBRICATEDBYORDNANCE

Generators,throttlecontrolrodjackshaft,

netos,elevatinggearcase(for dis-

choperatingshaftbearings.

ructionsarecloselyfollowed,

actoryresultsarenotobtained,a

nceofficerresponsibleforthemain-

nalchangesoflubricantsandrecoil

unBook.

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NVEHICLE

uipment27

5825Instructionbag

tonenginebulkhead

IL"inblackletters

nt,MlBracketinturret

O1420)

inturret

g,M3

ubfloor

ndersubfloor

.50)(6).. Bracketundersubfloor

Toolboxundersubfloor

xundersubfloor

lboxunder subfloor

cal..50machinegun

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AGEM10A1

nspare barrel

subfloor

olboxundersubfloor

nder subfloor

M7Toolboxundersubfloor

UN.

o\Box

lBox

,

Submachinegunbracket

unOnrackinturret

x3Vs-inOnrackinturret

rRackinturret

inturret

nToolbox

ncal..45submachinegun

g(2)Toolbox

gof:

box

oolbox

lbox

box

oolbox

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NVEHICLE

ud Toolbox

box

emblyToolbox

olbox

x

olbox

lbox

x

box

Toolbox

lbox

box

(60) Bandolier,rightfront

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AGEM10A1

et

rsubfloor

nson,6 roundsturret

rleftfront

xesinturret

orleftfront

et

rret

Mountinturret

al..45,M1928A1Rackinturret

deplate

oedof:

ketundergun

39Onbracketinturret

istant driver(3arespares)

boxesby assistantdriver

ret(1is aspare)

oxon enginebulkhead

ndergun

SORIESANDEQUIPMENT.

qt,M2(2)Bracketunderright

5)Strapontoturret

stant driverseat

es(O.O.Form7255)Instructionbag

nderleftfrontsubfloor

nupperhull

ver,

plate

andard)(2)Bracketsundersubfloor

racketbydriver,bracketinturret

tdriveranddriver

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NVEHICLE

D48067is

ret

ewithQMCheadsize

leftof driver

ofdriver

chineGunM1928A1

eGunM2

(FM23-30)Instructionbag

orvehicle)Instructionbag

nM7Instructionbag

nMotorCarriage

nMotorCarriage

dcal..45submachine

45-x45-ft,Spec.T-1669OnTurret

nderrightfront subfloor

et

1,1burner

0(withaccessorycups)

Onturret

15ydlongToolbox

rollToolbox

nturret

ox

ideNo.113Instructionbag

ideNo.109

Toolbox

NT.

e)Depot

epot

ot

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AGEM10A1

610,orBritish19(1per

(60cans)Rationboxunder

n(2cans)Rationboxunder

PAREPARTS.

indinstrumentpanel

with

urret

box

hacklepin) (2)Toolbox

(2)Tool box

ypeToolbag

ctypeToolbag

drive,5-in.longToolbag

ngToolbag

bag

olbag

g

,32-ozToolbag

q-drive,11-in.longToolbag

sq-drive,17-in.longToolbag

,12-in.longToolbag

17-inToolbag

5-in.,BJH.fittingToolbag

oolbag

inToolbag

ve,9-inToolbag

ladeToolbag

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NVEHICLE

/4-in.bladeToolbag

Va-in.bladeToolbag

8-inToolbag

12-inToolbag

oy-steel,%r,-x3/g-inToolbag

oy-steel,vie,-xVa-inToolbag

oy-steel,%-xn/i-inToolbag

oy-steel,%-x3/i-inToolbag

oy-steel,1%i-x7/s-inToolbag

oy-steel,1%-x1-inToolbag

missionandoildrainplug)Tool bag

entialfilleranddrainplug)Tool bag

xToolbag

Toolbag

xToolbag

Toolbag

xToolbag

Toolbag

Toolbag

3/s-in.sqToolbag

7/i->ri-hexToolbag

Va-in.hexToolbag

%(j-in.hexToolbag

5/iS-in.hexToolbag

%-in.hexToolbag

7/s-in.hex(2)Toolbag

15/lirin.hex(2)Toolbag

1-in.hexToolbag

l%-in.hexToolbag

1Vs-in.hexToolbag

lVa-in.hexToolbag

b)Bracketonrearplate

etonrearplate

plate

le)Bracketonrearplate

rearplate

lbBracketonrearplate

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AGEM10A1

STRUCTIONS

epairbythe crewandotherunits

bytheavailabilityofsuitabletools,

pabilitiesofthemechanics,time

n.Alloftheseare variableandno

prescribed.

NANCE.

nancedutiesforwhichtoolsand

sing armandordnancemain-

andrepairswhicharethe responsi-

ersonnelmaybeperformedbyusing

cespermit,withinthediscretionof

lonsandwordsasused inthislist

efinedasfollows:

izationregiments,battalions,compa-

ompanies(first

htmaintenancecompanies,ordnance

ordnancedivi-

ndpostordnance

heavymaintenancecompanies,andserv-

eregiments,ordnancebases,arsenals,

rvicing,cleaning,lubricating,tight-

dnuts,andmakingexternalad-

bassembliesorassembliesand

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movingthepart,subassernblyor

mthe vehicles,andreplacingitwith

part,subassem-

semaybe.

kingrepairsto,or replacementof

rnblyorassemblythatcanbe

dwithoutcompletelydisassembling

nddoesnotre-

machining,fit-

pletelyreconditioningandre-

iceableconditionanyunservice-

ssemblyorassemblyofthevehicle,

hining,fitting,

andtesting.

lnormallybeperformedinthe

ionsallocatedtotheechelonsas

ishedbytherespectiveechelonsin

MAINTENANCE

NITION

LEVERS

.,x

iceand/or

ir'..x

replacex

x

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AGEM10A1

rd4thSlh

AORANDFAN

fanreplace...x

fanrepairx

fanrebuild...x

yreplacex

yrepairx

yrebuildEX

ASSEMBLY)(1-PIECE)

yreplacex

repairx

rebuildEx

EMBLY,CONTROLLED

ontrolled

ntrolledrepairx

ntrolledrebuildEx

andorrepair...x

nd/orreplace...x

eline)x

replace..,...,x

repairx

rebuildEx

placex

x

cex

Ex

dtoremoveandreinstallitems markedbyan

essarytoreplaceanitemmarkedby anasterisk

semblyorunitassembly,theassemblymarkedby

thevehicleby thesecondechelononlyafter

ahigherechelonof maintenance.

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ON

ASSEMBLY)(3-PIECE)

yreplacex

repairx

rebuildEx

,CONTROLLED

edreplacex

drepairx

drebuildEx

BLY,CONTROLLED

rolledreplace.x

olledrepairx

olledrebuild...Ex

and/orrepair....x

nd/orreplace..x

eline)x

replacex

repairx

rebuildEx

Y

replacex

_.x

cex

Ex

d/orreplacex

dtoremoveand reinstallitemsmarkedbyan

essarytoreplacean itemmarkedbyanasterisk


thevehicle bythesecondechelononlyafter

mahigher echelonofmaintenance.

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AGEM10A1

d2nd3rd4th5th

cex

rx

ldx

sreplacex

srepairx

replacex

repairx

rebuildEx

and/orreplace..x

replacex

serviceand/or

rebuildx

GAA

aceEE x

laceEEx

..x

tion)Ex

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AA-Confd2nd3rd4lh 5h

pacex

pirx

d/orreplace....x

x

n)Ex

ondition)Ex

aex

x

foldreplacex

/orreplacex

x

verepairand/or

verebuild

d/orrepair...x

aterreplace...x

aterrepair....x

acex

irx

ildx

orreplacegasketx

orrepairx

dtoremoveandreinstallitems markedbyan

essarytoreplaceanitemmarkedby anasterisk


thevehicleby thesecondechelononlyalter

ahigherechelonof maintenance.

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AGEM10A1

GAA-Cent'd2nd3rd4th5th

lacex

cx

nd/orreplace...x

d/orrepairx

x

erreplacex

nitionreplace..x

nitionrepair...x

TEM

chargex

Oarepairand/or

O2rebuildEX

placex

cex

rx

acex

aceEx

x

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cex

rx

ex

S

x

x

cex

rx

ldEx

onreplacex

onrepair.......x

versaljoints

versaljoints

versaljoints

erwheelsreplacex

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AGEM10A1

Cont'd2nd3rd4th5th

x

ksupporting

ksupporting

ksupporting

pairx

ire)x

replacex

repairx

rebuildx

rrepairx

0A1serviceand

0A1rebuild(with

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EMAINTENANCESERVICES

tenanceservices33

VENTIVEMAINTENANCESERV-

ceinspectionsandservicesarea

ftheusing arms,andaretherespon-

ngorganizations.

iesofthepreventivemaintenance

deredaminimumrequirementfor

derunusualoperatingconditionssuch

rsandyterrain,itmaybe necessary

ervicesmorefrequently.

PATION.Thedriversshouldaccom-

mechanicswhileperiodicsecond

ervicesareperformed.Ordinarily

clefor ascheduledpreventivemain-

eancondition;thatis,it shouldbe

reasetosuchanextentthat inspec-

y hampered.However,thevehicle

horoughlyclean,sincecertaintypes

ndlooseorshifted partsorassem-

facesareslightlysoiledordusty.

secontainedinthegeneralproce-

ecificproceduresinparagraph(5)

correctperformanceofapreventive

ctionofadeficiency,othersectionsof

tainingtotheiteminvolved,or a

y,shouldbeconsulted.

Thesegeneralproceduresarebasic

wedwhenperformingtheserviceson

ocedures.NOTE:Thesecondechelon

inedintheseproceduresso thatthey

ssembliesareinstalledto correct

ntoseethattheyare clean,correctly

dadjusted.

tretainerseals,a coatingofthe

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AGEM10A1

esealingsurfaceof thelipofthe

herseal,itshould besoakedinSAE

icable)foratleast30minutes.The

fullybyhand beforeinstallingthe

edormarred.

hitemappliesalso toanysup-

ndusuallyincludesachecktosee

dition,correctlyassembled,secure,or

smustbethoroughlytrainedinthe

erms.

tion"isusuallyan externalvisual

theunitisdamagedbeyondsafeor

dcondition"isexplainedfurtherby

twisted,notchafedorburned,not

yed,notdentedor collapsed,not

thatit is"correctlyassembled"is

iontoseewhetherit isinits normal

.

ermineifitis "secure"isusually

hand-feel,orapry-barcheckfor

ouldincludeanybrackets,lock

,orcotterpinsusedin assembly.

derstoodtomeanworn,closetoor

kelytoresultin afailureifnot

edinspection.

dicatedbyrepeatingtheitem

owtheintervalat whichtheservices

t thepartsorassembliesareto

es.Forexample,anitemnumberin

ghten procedure,meansthatthe

stbe performed.Thespecialservices

ustmentsinaccordancewiththe

erator'smanual,specialbulletins,

hdry-cleaningsolventtoremove

oreignmaterial.Afterthepartsare

and drythemthoroughly.Takecare

sembled,andbecertaintokeepclean-

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hermaterialwhichitwilldamage.

ngfromnewparts,sincethismaterial

eseithertolubricationoperations

lubricationchartandtoitemsthat

uldbeperformedinconnectionwith

rtshavetobe disassembledfor

performingspecialoperations,

r,drainingandrefillingunits with

artridge.

onsshouldbeperformedwith

nthewrenchhandle)totightenthe

alpractice.Usetorque-indicating

vertighten,asthismaystripthreads

illalwaysbeunderstoodtoinclude

shers,locknuts,andcotterpins pro-

culttoperformthe completepre-

atonetime,theycansometimesbe

ompletealloperationswithinthe

meathalts andinbivouacareasmust

thatmaintenanceoperationsare

acticalsituation,itemswithSpecial

givenfirst consideration.

vemaintenanceproceduresthat

tlinedonW.D.A.G.O.FormNo.462,

anceServiceWorkSheetforFull

hicles.Certainitemsonthework

hiclearenot includedintheprocedures

umericalsequenceofitemsonthe

ualprocedures,butin someinstances

nofthemechanic'stimeandeffort.

geachitemin the50-hour(500

s)maintenanceproceduresarede-

chpageofthe charthastwo

dingtothe 100-hourandthe50-hour

tenitwillbe foundthataparticular

maintenances.Inorderto deter-

ookdownthecolumncorresponding

everanitemnumberappears,per-

positethenumber.

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AGEM10A1

esnotpermit afull

6,9,12,13,14, and15

mentofthevehicle.

houldbe,preferably,

TION.Beforevehicleis

-operationservices,

minewhetherthe

ntoberoad tested.

S.

essuremustread

sidlingand60 to80

minute.Stopengine

ightcomeson.

highchargingrate

rgingrateforextended

nedoff indicatesa

ator.

admorethan30

operly.

egistercorrect

withoutnoise.

egisteraccumu-

ageshouldnotex-

usatmospherictem-

age.Oilgageshould

erapproximate

running,andindi-

neif tacticalsituation

rakesatslowspeedto

stbe4to 8inches.

ingwithmoderate

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lyparkingbrake.

parkingbrake,pedal

appliedposition and

nparkingbrakeis

remainlockedin fully

alwhichmustbe3Va

andmustnotslip or

earing.

ntiregear range.Lever

eely,gearsmustshift

tslipoutof mesh.

,orhardshifting.

thlyandquietlyat idle

perminute.Gradually

rnedspeedof2,600

ymisfiring,detonation,

king.Whendriving

eration.

dtestlistenforanyunusual

cateloose,wornor

ion.

ndfeelbogiewheeland

r overheating.

NG,ANDSTABILIZERMECH-

guntravellinglock.

levateanddepress

echanismmustoperate

veplaythroughout

nglockandturretlock.

erunningandthor-

dgroundunder

Inspecthulland

orwaterleaks.

notbindnorwhip.Proper

upportrollers.

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AGEM10A1

S

penbattery master

ate.Inspectoilpan,

s.Drainoilpanand

iscontaminated.When

oiluntil item54is

ngineoilfilterforloose

veandthoroughly

ket.

earandsidearmor,and

twouldrender vehicle

wingshackles,lifting

pintlehooklatch

exhaustdeflectors,and

dcondition.Identifica-

intand camouflage

etacticalsituation.

ightenbentparts.

ehook,andlatch.

tomofhulltodetermine

dition.Examineinspec-

akesuretheyare

unted.Releaseescape

ksecurely.Tighten

Lubricateescapehatch

DRIVES.Examinehousings

hingbolts.Draindif-

ngswhentransmission

ingboltsshouldbe

ose,worn,ormissing

worn,damaged,ordead

ension.Tightenall

serviceableblocks,

acksothatitis not

hanthree-fourthsinch

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hird100-hourmain-

ughlyinspectall

24,and25.

actureorlooseormiss-

pandlockingcollar

dlerwheelfordam-

re,missinglubrication

htenall attaching

gcapbolts,andlocking

roughlytestedfor

essbyusingprybaron

verythird100-hour

tforfracturesorloose

vers,gudgeons,spring

ures,excessivewear,

nserviceableiftwo

gseat.

ingboltsmustbe

ERS.Inspectbogiewheelsfor

ssinglubricationfit-

untings,breaks,or

ecttrackskidsforloose

amineallbogiewheel

orblow-outs.Raise

128).Rotatewheel

uatelylubricatedbear-

mustbeconnected

ortrollers.Rotate

nadequatelylubri-

lay.Makethis.test

hird100-hourpre-

ghtenallassemblyand

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AGEM10A1

sforfractures,exces-

ose attachingbolts.

eattachingbolts,or

oltssecurely.

rd100-hourpre-

r.129).Testtrack

excessivewear,end

ith prybar.Reverse

ckets.

ullandturretarmor

drendervehicleun-

rilles,andhatches

y.

Allfillercapcoversmust

kpin attachedto

rossedthreads,leak-

nditionindicatesengineis

cordersaregivenby a

eremovedaccording

7b.

anersanddisassemble.

serviceabilityand

nelementsandthor-

drefill withseasonal

onbody.

hattheyare securely

linkageandsprings

SKETS.Examinecylinder

mpressionleaksaround

willnot betightened

floosenessor leaks.

gasketsasneeded.

camshafthousingsand

sforgoodcondition

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learanceisnotad-

tcovergasketfor

gsandexamineelec-

psetting of0.011inch

aceanysparkplug

apadjustment.

necompressionineach

lindersmustnotbe

ngsinspaceprovided

2.Normalcompres-

kingspeed.Cylinders

ateanexcessive

5poundsbetween

.Examinegeneratorsand

r looseelectricalcon-

bandandinspectfor

on,dirtyor scored

required.Tighten

onnections.

tyofmountingand

ereisanyevidenceof

erpointgap mustbe

e fromoilorgrease

edpointsmustbe

manifold,intakehousing

tleaks.

HROUDS.Examinewater

orloosemountingbolts

dsforalinementand

tsandreplacegaskets

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AGEM10A1

kesurefueltanks,valves,

ightandsecurely

eaks.Examinefuel

inggaskets.Replace

storemoveany

oosemountingand

dbowl.Replacegas-

andconnectionsas

ustpipestoseethatall

renol eaks;andthat

ctallenginemountingsfor

clutchhousingforloose

alllinkageforpres-

ng.Free travelmust

pectenginecompartment

ngsurethey areclean

ntthoroughlyand

fnecessary.

RSYSTEM.Examinealllines,

lstoseethattheyare

zlesmustbeintactand

smustberemovedand

y charged.Operate

movedtoseethatthey

eely.Lubricatepul-

eeded.

ntheengineis removedat

helon,it mustbe

sgiveninparagraph

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waterlines,andvarious

ndradiatorandcrank-

ne.

bes,hoses,andconnec-

dsecurelymounted.

eare noleaks.Exam-

orscale.Removeall

oolingsurfaces.Test

nisadequateforpre-

nspaceprovidedon

eriorofbatteriesand

n,tighten,andgrease

lconnectionsandbat-

meterreadingofeach

portreadingif 1.225

etestoneachcell.

0percentbetween

chargereadingsin

entForm462.Add

d toraiselevelof

ovetopofplates.Bat-

ned.

eleratorpedalandlink-

securelymountedand

outfulllimitoftravel

kesureitengagesfreely

speedwithoutun-

dintheengine com-

oil,or waterleaks

enif required.Replace

ry.

nspectmountingsandelec-

aretight. Regulators

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AGEM10A1

getestsusinglow

rfunctioningofall

lingspeed.Tachometer

nute.Listento exhaust

venoperation.Adjust

ON.Thethrottleconnecting

henginestoppedboth

bothcarburetor

ageasnecessary

nspectfightingcompart-

freefromexpended

sarein goodcondition

entstowageboxes,

mustbeinproperplace,

urelymounted.

.Inspectlines,hoses,con-

osemountings.Air-

penfreelyandlock

eelyandlockin

allwiring,conduits,ter-

ections.Theymustbe

rviceablecondition.

losed.

hroughentire360

ebacklash.Handbrake

anddepressgunby

freelywithoutbind

tivecontrolthroughout

land electricalfiring

veactionandallcon-

ightenedsecurely.

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mountin turretbracket.

irectionswithoutbind-

PARTS.Inspectsparegun

eandproperlystowed.

spareparts.

ethat itissecurely

d,andisinserviceable

pivotorrotatefreely

periscopesmustbe

adsreplaced.

heightmustbe16inches,

geofpedalpadto

ltravel mustbe31/2

eethatthere isno

musthave4to8 inches

escontactdrums.

parkingbrake,pedal

appliedposition and

nparkingbrakeis

remainlockedin

dtightenlinkageas

henroadtestorinspec-

parkingbrakelining

e andpar.124b).

HER.Inspectalldifferential

artmentforevidence

gboltsforlooseness.

ustnotbeclogged.

HER.Inspectalltransmis-

eofleaking.Examine

Tightenwhenneces-

d.Removebreather

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AGEM10A1

Examineforwornorloose

atefreelywithout

hennecessary.

llershaftforrun-outand

ointflangeboltsfor

tsforwearandgrease

whennecessary.

coverssecurelyfas-

thalllightswitchesin"ON"

thattheyareoperating-

nted,andgooutwhen

lswitches,making

gsaretightenedse-

ectalltoolsand equip-

serviceablecondition

shownonthe current,

seethatitis fullandlook

notmorethan90

stensecurelyin

HERS.Removeandweigh

refullycharged(par.

unitsifnecessary.

o.26.Seethatthe "On

licationsandforms

entFormNo.26are

cklubricationofentire

emblywasnecessary

ionmustbeperformed

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nedforrepairofthat

lein accordancewith

DepartmentLubrica-

rentlubricationbulle-

nginstructions:Use

ubricantcontainers

nt,cleanlubricationfit-

damagedfittings,lines,

ingsorjoints, thelubri-

ppearsatopenings.On

inerseals,donot force

oilfromengine,oil

nsfercase,differential,

llunits tocorrect

pletedsounitswillnot

he"COLD"oillevel,

torintransmission,is

nsmakeitnecessary

oilfoaming,levelmay

."Donotapplymore

nttogeneratoror

lureoftheunit.Wipe

clothesandequip-

sappearance.Parts

catedwhiledis-

sesthathavebeen

yitemsin theproce-

en indicatedinthe

nmaybeomittedfrom

cle.

onalrecordsmustbe

FieldServiceModifi-

thevehiclehavebeen

ms2to15inclusive,

seunitson whichwork

intheyhavebeen

ondition.Correctany

alroadtest.

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AGEM10A1

NDEQUIPMENT

nt34

NDEQUIPMENT.

dedin thissection,togetherwith

nVII, providetheusingarmswith

rservicingthevehicle.

ols,StandardSets.

cs'41-T-3538

-3515

torvehicle

echelon

echelon

echelon

echelon

echelon

echelon

echelon

echelon

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ANDEQUIPMENT

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AGEM10A1

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ANDEQUIPMENT

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AGEM10A1

NANDDATA.

weredwitha60-degree,V,

,liquid-cooledFordtankengine.The

castenblockofaluminumwithsteel,

es.Thewaterjacketsextendthefull

dcamshaftsareused,oneexhaust

ylinders.Therearetwoexhaustand

r.Theengineis mountedattherear

ur brackets.Thetwofrontbrackets

rtmentbulkhead.Thetworear

necompartmentfloor.Rubber

ketsandtheengine.Two4-cylinder

atedatthe rearoftheengine(fig.

acrossshaftdrivenbygears. The

romtheendofthe crankshaft.Two

donthesidewallsofthe enginecom-

anaccessorydriveshaftanduni-

vegearsin theengine.Twopusher-

leV-typebelts bytheaccessory

remountedon theforwardendof

r.72).Theoilpump (par.42)isof

eelendofengine willbere-

ineasthe engineismountedinthe

d.Theterms"right"and"left"are

as viewedfromtherearlooking

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AGEM10A1

dataincludesthegeneralin-

sticswhicharefrequentlyrequiredfor

inder,tankengine

clutch)

in paragraph45d)1,470Ib

omrearofengine):

ckwise

we

ed

07-308

n.

n.

027in.-0.30in.

2used)Bendix-StrombergNA-Y5G

rtofront:

-R,3-L,2-R,4-L

TING.

ningtheexactcauseofengine

esbecauseofthe numberofsources

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AGEM10A1

attributed.Thebest methodof

possiblecausesandeliminatethem,

stprobablecause.Thepurposeofthis

ble,thetimewastedin ascertaining

nchangedandtheEngine

rterButtonIsPressed.

asterswitchon.

.Tightenconnectionsandrepair

e(par.88).

htenconnectionsandrepair

ightenconnections.

ar.78b).

wLimitandtheEngine Fails

uttonIsPressed.

georreplace(par.76d)

(par.78b).

rreplacecable.

toTurnOverwhenStarter

otifyordnancemaintenance

ot Start.

N."

nvalves.

lacethrottleinwideopenposi-

eenginewithtwoor

Replace.

6 f.)

g.)

ar.48).

meignition(par.46 c).

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