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DELHAR-1)

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icDomain,Google-digitized

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RDEPARTMENT

ne10,1943

DELHAR-1)-J[y\^i )f

onofthe

eFourWheelDrive AutoCo.)

UCTIONS

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ntrols

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n32-3362-70

ve

1-84

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WHEELDRIVEMODELHAR-1)

nSpareParts

d

05

13

7114-133

7

5

8186-202

93203-253

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es123-127329-331

-133332-336

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144344-352

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ake-Off..165-173387-402


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UCTIONS

for theinformationandguidanceofthe

ionoftheFWD4x4Model HAR-1

ck,thismanualcontainsdescriptionsofthe

blies,andfunctionalsystems,includinginstruc-

roperation,inspection,adjustments,minor

ent.Specificinformationfortheguidanceof

w)iscontainedinPartI, sectionsItoIX,

heguidanceoforganizationalmaintenance

s)iscontainedinPart II,sectionsXto

atureoftherepair,modification,oradjust-

or facilitiesoftheunit,theresponsibleord-

formed,sothattrainedpersonnelwithsuitable

beprovided,orproperinstructionsissued.

rough5).

rgoTruckisa four-wheeldrivechassis

cylinderL-headtypeofengine.Ithasacon-

aseassembly,withacenterdifferentialsimilar

ontandrearaxles.Amilitary typeofcargo

assiswithseatingcapacityfortheusingarms.

utchandconstantmeshclashtype


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WHEELDRIVE MODELHAR-1)


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y11,425Ib

d19,425Ib

8Vift

ransfercase)ISVzin.

whooks

d35mph

qt

t

netank)40gal

3qt

ycapacity2qt

75pt


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R-1Front


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R-1Rear


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R-1Top


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ON

tis essentialthatthedriverbethor-

ntrolsandtheir locationbeforeattemptingto

rivershouldstudythecontrols(figs. 6to12),

whichare notfoundonstandardvehicles.

7). Theignitionswitchislocateddirectly

hisswitchisself-containedanddoesnotrequire

ration.Itisconstructedwithathumbpiece

e lefttocompletetheelectricalcircuitneces-


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ON


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WHEELDRIVE MODELHAR-1)


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ON


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.6and7). Thelightingswitchcontrols

hts.Bypullingthe switchouttothefirst

tsareturnedon.Theselights consistofblack-

ndblackoutsignallight.Bydepressingthe

pullingtheswitchtothesecondposition,the

.This includestheserviceheadlightsandtail-

ompleted,sothattheservicestoplightwill

s onandwithinthedash panel.Theservice

epressingthebrakepedal.Bypulling thelight

othethirdposition,the servicestoplightonly

meoperation.Thedashlights areoperated

e dashpanel(step(4)below).

NTROLSWITCH(fig.8).Thisswitch,

mmerswitch,islocatedjusttothe leftofthe

uttonoperatedby theleftfoot.It controls

theserviceheadlightsandoperatesonly

tchis pulledouttoits secondposition.To

withtheleft foottoraiseorlower thehead-

owbeamsalternateeachtimetheswitchis

ryto keeppressureonthebuttonafterthe

sthe switchlocksitselfeachtimethebutton

and8). Thepanellightsarecontrolled

Thisswitchisoperatingonlywhenthe main

osecondposition(servicelightson).The

heswitchispulledout.

s.7and8).Thechokecontrolconsists

wireandhousingassemblywhichissecuredto

ntrolvalve.Thebuttonlocatedonthedash

entifiedbyaletter"C"on itsface.Itclosesthe

arburetorwhenitispulled out.Thisprevents

ngairandconsequentlyitfeedsa richergaso-

Pull thechokecontroloutwhenstartinga

pushit inastheenginebecomeswarm.NOTE:

okebuttonis pushedinwhentheenginehas

temperature.Toneglectthiswillcausea

gine.Thisresultsin toomuchrawfuelin the

oilfilmfromthe cylinderwallsanddilutes

vechokingalsowastesfuel.Theuseofthe

aryinstartingawarmengine.

gs.7and8). Thethrottlecontrolcon-

dtoa wireandhousingassemblywhichis

hrottlearmat itsoppositeend.Thebuttonis

theoil gagetotheleftof theignitionswitch

r"T"onitsface.Its purposeistoprovidein-

ondthatprovidedbytheidling adjustmenton

hieflyinstartingtheenginewhennot con-


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ON

OaCFORf

HANDLE

tialLockLever


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he footaccelerator.Pullingthebuttonout-

tertheenginehas beenstarted,thebutton

ccelerationordecelerationcontrolledbythe

LLOCKLEVER(fig.8).Thecenterdif-

edonthe dashpaneljusttothe leftofthe

esameansoflockingand unlockingthecenter

per

otbeconfusedwithdeclutchingdevicesand

usedonother vehicles.)Whenitisnecessary

the leveroutandthenturn thehandletothe

dsleevein thecenterdifferentialdonot

ringtensionwillautomaticallyengagethem

reachedwhilethe truckisinmotion.For

fertoparagraph6hand i.

TON(fig.9).Thestarter motorbutton,

steeringcolumnandabovetheaccelerator

foroperationwiththeright foot.Itspurposeis

circuittothestartermotor,so thatitcancrank

essthebuttonwith therightfootandhold it

ntilthe enginestarts.CAUTION:Donot


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ON


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ilethe engineisrunningorwhilethe shifting

g.10).Thisvehicleis equippedwith

econtrolisasmall individualbuttonlocated

douttooperatethewindshieldwiperblades.

L(fig.11).Theacceleratorpedal,lo-

therightofthesteering gear,isusedtocon-

ght footwhiledrivingthetruck.

elandHornButton

1).Theclutchpedal,locatedonthe

tof theoperator,istobe operatedwiththe

edaltothe floorboardsdisengagestheclutch

arsmaybe shifted.

).Thefootbrakepedal,alsolocated

rectlyinfrontofthe operator,isoperatedby

ssedtoslowdownorstop thevehicle.

-OFF(fig.11).Thehandlever,nearest

gfromthefloor boards,controlsthewinch.

ehigh speedforwindingthecableandex-

owspeedfor winding.Centerpositionisthe

g.Therearetwoneutralpositions,one between

etweenlowand reverse.


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ON

RSHIFTLEVER(fig.11).Thisleveris

winchcontrollever.Itspurposeis tocontrol

hetransmission.Thediagram(fig.15) shows

eleverfor variousgearselectionsinthetrans-

ybesurethat thegearshiftleverisin the

rtingtheengine.

PARKING)(fig.11).Thisleveristhe one

he driver.Itisused principallyforholding

eration

ehandbrakeis releasedwhentheleverisin

on,andappliedwhenpulledbacktowardthe

eleverwilllockin position.Inordertomove

ustbereleasedbysqueezingit tothelever

2).Thehornbutton,locatedinthe

el,isfor thepurposeofsoundingthehorn.It is

nward.

MENTS(fig.13).

hieldisfittedwithadjustablethrow-out

hewindshieldtobe movedoutatthebottom.


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senthethumbnutsoneachthrow-outarm,

edesiredposition,and tightenthethumbnuts.

designedwithahingearrangementat

tirewindshieldandframeworkmaybetipped

t overthehood.Thisarrangementmaybe

stopis notused.Toplacethewindshieldin

umbnuts,tilt thewindshieldforwardasfar

allow,andtightenthethumbnuts.

ted,the prestartinginspectionoutlined

omplished.Thefollowingstepsinstartingthe

voidunnecessaryenginewearin thewarm-

are satisfactoryunderaverageoperating

er.

tleverinneutral position.

artway.

NOTE:Itis notnecessarytochokea

and pushthestarterbutton.NOTE:

depressclutchpedaltoeasethestartingload.

alandadjustthe handthrottletoaposi-

rom racing.Ifthechokewasused,pushin

y.

ut15minutestofill allthebearingswith

t buildupatonce,especiallyincoldweather,

willbe necessarytofillthelinesand buildup

gineis readytobeput underload.Oilpressure

sminimumatidlingand 40poundsmaximum

hNewEngines.

ouldbetakenwithnewenginesto avoid

ubricatingoilinthefuel tank.Useaboutone

verythreetofive gallonsoffuelduringthe

sandinject ateaspoonfuloflightcylin-

ensurelubricationofthepistonsand cylinders

s.

ngine,inspectit thoroughlyandseethat

erworkingorder.

soriesmusthaveproperlubricationat


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ON

eisfilledwiththepropergradeof oil(par.

mpandfanhaveproperlubrication.All

calequipment,etc.shouldbelubricatedin

onsinsectionVI.

on,propercoolingof theengineisthe

n.Besurethatthecoolingsystemis full,that

oneofthehose connectionshavecollapsedor

reverpossible,usesoftor distilledwaterinthe

doralkalinewaters.

esignedtooperatemostsmoothlyand

of65to68octaneor better,withtheautomatic

2degreesbefore"T.D.C."(Refertosection

he cleanestfuelobtainableandkeepthefuel

ndwater.NOTE:Alwayskeepthefuel tank

on.

dwithagovernorwhichwillmaintainthe

its,.aslisted inparagraph3.Undernocondi-

rmissiblespeedsbeexceeded.

ershouldbeservicedbeforethetruckis

tioning,engagethestartinghandcrank

hestartingcrankwiththe thumbonthesame

mayresultin abrokenwristifthe engineshould

theengineshouldstarteasilywith thethirdor

hoke,leavetheignition"OFF",crankfour

ndersfullofmixture,openthechoke,turn

k.

urntheengineover,firstcheckthebattery

11).Continuedattemptstostart withalow

nstartercommutator.

securedincoldweatheriftheclutchis

hisdisconnectstheenginefromthetransmis-

ryforthestarterto turntheengineandtrans-

ime.

agesintheflywheelandlocks,releasethe

fthe ignitionswitch,releasetheparkingbrake,

ninhigh gear.Rockthevehiclebackwardand

releasefromtheflywheel,loosenthestarting

es.Besure totightenthecapscrewsbefore

ermotor(par. 84).

heengineutilizesa pressurecooling

mthebottomof theradiatorisdrawninto a

rcesitthroughtheenginewaterjackets,outthe

kto theradiatorforcooling.


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mDrainCocks

NGSYSTEM(fig.14).Draincocksare

softhe coolingsystem.Thereisadraincock

derblock,oneonthe waterpump,andoneat

iatorinlet pipe.Makesurethatnoneof

.

GESTION.Covertheradiatorpartlyor com-

operation.Toavoidcoolingsystemfreeze-ups,

recommended(par.10).

buretorchokeshouldneverbeleftclosed

engineis running.Theclosingofthechoke

hemixture.Richmixturesalwaysheatupthe

rntheexhaustvalves.Alwaysmakecertain

eopen whentheengineisrunning.

LE.

velRoad.Afterthe engineisthor-

oximately140F,thevehiclemaybe movedas

ke.

ypushingthe clutchpedalfullydown.


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ON

firstorsecondspeedgear,depending

alslowlyandat thesametimeaccelerate

wnon theacceleratorpedal.

d,increasethetruck'sspeed.NOTE:Do

omentum,removefootfromaccelerator

geclutch.Shiftthetransmissionintothenext

sestepsuntilthe transmissionisplacedin

theparkingbrake.Disengagethe

.Engage theclutchslowlyandatthesame


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eandgraduallyreleasetheparkingbrakeas the

ybenecessarytoshift toalowergear

complishedbydouble-clutchingtoassurea

ansmissiongears.Disengageclutchandshiftthe

osition.Releasetheclutchpedalandmomen-

atortoincreasethespeedofthecountershaft

Thistends tosynchronizethematinggears.

edbydisengagingtheclutchpedalandshifting

extlowergear.The operatormustremember

enthecountershaftandmainshaftgears tobe

ned,otherwiseasmoothshiftcannotbemade.

YTIME

OTEXCEED

ar.Beforeattemptingtoshiftinto

k.Removefootfromacceleratoranddisengage

sionshiftleverintotheposition (R)(fig.15).

raduallyandatthe sametimeacceleratethe

nthe acceleratorpedal.

(Maximum.)Thistruckisequipped

tsthemaximumpermissibleroadspeeds.The

epositionin whichthetransmissionshiftlever

N:Whendrivingdownahill, donotpermit

ximumroadspeedspecifiedinparagraph3

th,orfifth gear.Excessiveenginespeedunder

lopintobearing,piston,andvalvefailures.

vel.Whenapproachingloosesand

etruckwillbe movingtoofastforgoodcontrol

he enginemaypropelthetruckata higher


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ON

oosesandorgravelon accountofhardsteering

toverspeedengineas spinningthewheelswill

ayinto thesoftsurfaceanddifficultymaybe

stalled.Referto paragraph6handi foraddi-

pproachingloosesandandgravel.

rain.Whena truckisbeingdriven

udgmentshouldbeobserved.Theenginespeed

ningwheelswillcausea "jumping"effect.This

heeldiggingdeeperinthesoft surfaceandmay

ponentpartsofthe truck.Refertostepshandi

mationwhenapproachingsoftterrain.

CK-THISTRUCKDRIVES

MES.THECENTERDIFFERC.NTIAL

ERCOMEW/tfELSLIPPAGEOHEITHER

NGAGEDBEFOftESLIPPAGEOCCURS.

SHOULDTHISLOCKBEKtPTCH6A6LD

FSLIPPAGENOLON6CJ?EXISTS.S

UALFORDETAILS.

ANDLE

AND

ATCHES

ntialWarningPlate

fferentialLockLever.Thecenter

eratedfromthedriver'sseat. Aconnecting

theleverandleadsto thetransfercasewhere

ockarelocated.Underordinarydrivingcon-

eftunlocked.Somedrivershavethe opinion

veonthefourwheelsunless thecenterdiffer-

ttrue;thetruckalwaysdriveson fourwheels,

erentialprovidesforadditionaltractionunder

ever,thismechanismshouldnotbelockedcon-

edonlyfor emergencyuseunderthefollowing

sandorgravelpits;climbinghills whichhave

someparts ofthegrade;plowingthroughsnow

es,streams,plowedfields,andoverunusually

Differential.Thedriver ofthe

ckbeforereachingwhatappearstobe abad

gagethe lockwhilethetruckistravelingat

heelshaveequaltraction,butthelockmust

uckis travelingunlessequaltractiondoes

tialtroubleiscausedbydrivers engagingthe


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onditiondoesnotexist.Ifthe truckhasbegun

rearwheelshavetractionwhile thefrontwheels

bebroughttoa stopbeforethedifferential

ethelockwhileone wheelisspinningandthe

bletorunningapleasurecarinhigh gearand

everse.Whenthetruckis movingthrough

strainon anyparticularpart,sincethelocking

akestheentiretrucka: singledriving

e.In theeventthateitherthefront

isconnectthepropellershaftleadingtothe

versaljoints,andremovethedrivingspiders

nectingthepropellershaftandremovingthe

tfurtherdamagetothe disabledaxleassembly.

al(par.4a(7) ).

E.

erator.Applythebrakesgraduallyby

epedal.Whenthe truckhasbeensloweddown

engagetheclutchby pressingdownonclutch

ionshiftleverintoneutralposition.When the

etestop,releasethe clutchpedalandapply

stop theengine,turnofftheignition

eengineshouldbestoppedwith thethrottle

speedincreasedbeforeturning offtheignition.

stop,itwillblowout allvaporsandresidual

asolinevaporin thecombustionchambers.

urned off.


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NTROLSANDOPERATION

gs.18to20).

vehiclehasa10,000-poundcapacity.It

dofthetruckandi ssupportedbetweenthe

chOperation

winchis transmittedfromthemain

powertake-offunit,mountedtotheleftside

ghthedriveshaftto thewormshaftofthe

ythe powertake-offshiftleverinthe

wertake-offineitherthetwo forwardorone

eutralpointsarebetweeneachof thegear

e controlleverwillsecurethetake-offinone

roperationis explainedinparagraph4a(13 ).


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H

ATASPEED

Plate

outjawclutchto releasedposition

hookontoload;thenengagethejawclutch

hpedal,shiftpowertake-offleverinto

(high,for lightpulls;low,forheavypulls).

ually;winchwillwindcable.

utchpedalandshiftpowertake-offinto

aftautomaticbrakewillholdtensiononline

edintoreversegear, oruntiltruckis driven

werorreleasetensionon cable,dis-

powertake-offintoreversegear,andrelease

ateinreverseand releasethewinchline.

easealoadwiththe jawclutch"out";al-

nchline andsecuretoatree withthe

gejawclutchandfollowstepd(above).

-onthefirstlayeris mostimportant.

betightagainsteachotherso thecoilsonthe

nbetweenthefirstlayer.As thecableis

ped everyfewincheswithawoodenblockto

es.NOTE:Winch-pullingspeedsarebased

edof800 revolutionsperminute,whichshould

ngwinch.

nuse,andthe lineproperlycoiledin

engagedandlockthepowertake-offshift

ngusedtoassistthe vehicle,withthe

vethepowertake-offinlowgear.Thetrans-

owgear.


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NTROLSANDOPERATION

POUNDS

INLOWSPLLDOfTML-OF

ATWHC.MTHISWINCHISUSED

WITHWHtlLSOflVIHG,THL

LOWSPC.ID,AMDTHf.

A.

AftAKTtLRLQulPt.THAT

RATLDATALLTiMtSAS'

TLRLGULATIOMS.

tyPlate

tomaticbrakeisabandtypeconsist-

dadiskkeyedtothe wormshaft.Itprevents

enthepowertake-offis inneutralposition,or

ed.Totestthebrake,placethe truckatthe

enthewinchlinetoanothertruckat thebottom

lingitupthe grade.Afterashorthaul,release

hwillstoppulling,and thetruckbeingpulled

the brakeiscorrectlyadjusted.

niver8aljointis connectedtothewinch

topreventoverloadingofpowertake-offand

bricationGuide(sectionVI).


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SUALCONDITIONS

0

on11

2

RATION.

tenanceofautomotivevehiclesatlow

torswhichdonotexistatnormaltemperatures.

cepersonnelmustspendmoretimeinprotec-

togivethisextraservicewillresult inactual

duntoldexpenses,andalsofailuretostart.

vebeendividedinto2ranges:-10F to

gineand lubricantsundergochangesin

-30F.In manycasesaccessoriesandequip-

engine,fuel,and intakeairarerequired.

tionthattheoperatorshould befamiliar

hicleincoldweather:

ionoficecrystalsfromsmallquantities

imescausesconsiderabletrouble.Thefollow-

ollowedtokeepwaterout ofthefueltank:

asuitable strainer.CAUTION:A

mustbemaintainedbetweenthefuelcontainer

eltankand containerareindependently

spossible.

edalcoholtoatankofgasolineto absorb

ense.

rums.

rumsdry;allowabout4 inchesoffuelto

bricationattemperaturesabove-10F

thismanualandinthe LubricationGuide.For

oneof thefollowingmeasuresmustbetaken

lable:

enclosure,ifpossible,whenit isnotbeing

opped,drainthecrankcaseoilwhileitis

warmplaceuntil vehicleistobeoperated

otavailable,heattheoilbeforeputtingit in

theoil toohot.Heatonlyto apointwherethe

withoutburning.)CAUTION:Placeatagin


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SUALCONDITIONS

cabto warnpersonnelthatthecrankcaseis

tarpaulin.Aboutthreehoursbeforethe

acefirepotsunderthetarpaulin.A VanPrag,

ypeof blowtorchorkerosenelanternmaybe

onforfirehazardsinvolved,theflamemaybe

n.

hgasoline.Thetablebelowshows the

addedtotheoilprescribedon theLubrication

hequantitiesofdiluents willformmixtures

temperaturesindicated.

sfirst diluted,turntheengineoversev-

luentthoroughly.

y.

yleneglycol(Prestone)isprescribedfor

Ifethyleneglycolis notavailable,otherma-

lowingtablegives threepermissiblematerials

dedtopreventfreezingatindicatedtempera-


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dedtocoolingsystem,addaboutone gal-

yofthecoolingsystemliquid.

celerateandmaintainengineoperating

trengthoffanbelt.Replacerubberfan

yntheticbeltsbelow -20F.

mpis ingoodoperatingcondition.

ICALPARTS.

ged,withhydrometerreadingbetween

chargedbatterywillfreezeand ruptureat5F.

ectricalwiringaccessories(sparkplugs,

r)topreventundueresistance.Makesureall

.005-in.lessthanthatrecommendedfor

onditions.

erbrushes,commutators,andbearings.

andbrushesareclean.

greaseordirtis onthestarterthrow-out

elow-15Fdilutelubricantsprescribed

ercentgasoline.Ifcircumstancespreclude

gearcaseswitha blow-torch.Playthetorch

r case;donotconcentratetheheatinonespot.

UBRICANTS.

g,andotherlubricantsprescribedforuse

ctorylubricationaslowas -30F.Forsus-

w-30F,use greasecomparabletoGREASE,

EASE,O.D.,No.00.UseOIL,tigine,crank-

rhousing.

dshockabsorberfluidsremainfluidat

ed.

RECAUTIONS.

tosecurethe airtofuelratio requiredfor

eckthebutterflyvalvetoseethatitclosesall

ctionsproperly.

lfromthe aircleaners.Below-30F

ntly.

ters attemperaturesbelow-30F.

edspeedometercablesatthedriveend

mperaturesofbelow-30 F.

mentbulb,strainer,etc.,inthefuel sys-


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SUALCONDITIONS

ntly.

ne,pull thechokeallthewayoutand

untiltheenginehaswarmedup.Turn the

ewith thestarterandreleasestartingpedal

s.Aftertheenginehasstarted,idle ituntilit

ytorunsmoothly.Donot racetheengineim-

tincreasetheenginespeedandthen turn

the throttleatthesametime.

es.Thefollowinglistofcoldweather

oyedatthediscretionofofficersinchargeof

lapsibleshedsareuseful forcovering

engines.

or VanPragblow-torches,ordinaryblow-

senelanternscanbeused forheatingvehicles.

itiesfor changingbatteriesquicklyare

metalstandsareusefulforheating

newillhelppreventice formationinside

aturedalcohol,aboutone-halfpintto a

icultiesfromwaterin gasoline.

mprovisedlocallyandhelpto keepthe

emperatures.

OPERATION.

,thefollowingunitsshouldbechecked:

uldbekept cleanandfull.

shouldbekeptfreefrom bugsandfor-

fectfreecirculationofair.

properlyadjusted.

requiresthe enginetolaboratlow engine

if practical,asthiswillcauseoverheatingdue

ndair circulation.

sitmaybe advisabletoremovethehood

restrictiontothe flowofair.

eindicator,andifthe needlegoesinthe

nd investigatethecause.Thevehicleshould

possible,andpermittedtocool.

ksarefrequent.Thefuellinesand fuel

wayfromareasofgreat heatandshouldnot

om thefan.Ifvaporlocksoccur,itmay be

nesandfuel pumpswhichcannotberelocated.


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ERRAIN.

eCovers.

nd intheairin thedesert,moreisstirred

cles,andduringasandstormtheamountmay

vement.Withoutadequateprotectivemeasures

etors,plugfeedlines,scorethe cylinders,dam-

reasethewearon allbearings.Theoilbath

gineifitis keptclean.Constant,closesuper-

ofair filtersaretheonlywaysof insuring

theengine.Thecrankcasebreatheropening

neffectiveaircleaner.Air cleanersshouldbe

deviceusingan airintake,suchasavacuum

ompressor.Aircleanersshouldbelocatedwhere

eleastdirtpollution.

nkcaseandfuellineswhenreplenishing

greatcareisusedduring theseoperations.The

off thecapsbeforeremovingandoffthe

containersbeforetheyareused.Itmaybe neces-

stoprotectfrontwheel jointsanddistributors.

lure ofinstrumentsinpanelif thesearenot

apemaybeusedforthispurpose.

twill requiremovementoveralltypes

uitableforeverytypeofsurfacewhichwillbe

ltywillbemetinsand.Air pressuremustbe

roundsurface.Oversandorsoft-powdered

persquareinchshould bereducedtothemini-

sthearea incontactwiththegroundis in-

selftotheirregularitiesof thesandwithout

t.Theminimumpressuremustbedetermined

ehicle.Tiresonflat-baserimswillspinon the

rewnground,tiresmustbeas fullyinflated

ofthevehiclepermit.Atlowpressuretheinner-

bebrokenby theviolentinwardbendingwhen

resultingchafingwillwearouttheinner tube

pparentfrom theoutsideofthetire.Since a

keavehicleoverdifferentkinds ofground,

ssary.

heconstantshockandvibrationwhich

erroughgroundfrequentlycausescableclipsto

ebrokenorshorted.Frequentinspectionof

eandspring washersinsertedunderthenutsif

nitsmaycausetroublebecauseofbreaking

rstickingofregulatorpoints.Driversshould

efullyasanyotherinstrument,sinceover-

ufficienttobuckletheplates,alwaysresults


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SUALCONDITIONS

st difficulttoobtaininthe desert.Thehigh

drinkingand forradiatorsforbidsitsuse in

ustbecarefullyloaded.Excessivebreak-

onstantsourceoftroublein thevehiclesused

oingisveryhardon springsandtheyare

ding,improperdistributionofload,orshifting

efromsoftsand thedrivingwheelsmust

rvehicleswith singletiresondrivingwheels

provisionof apairofsteel channelsfouror

onthe channelsshouldhaveacurvedbottom

holewidthof thetireatlow pressure.Itshould

sidestopreventthe tiresrunningoff,andthen

edflange oneachsidetostrengthenthe

rojectingfromtheundersideandholes

preventthe channelfromslippingunder

beused toformaroadwayforfrontwheels.

ylateralrungsofsteel sewnbetweentwothick-

ellentforthispurpose.Suchmatscan berolled

outinfrontoieachfrontwheelwhenneeded.

donthevehicle,asingleround wooden

f channels.Thesparshouldbeplacedbetween

.

ttempttogetoutof thesandbymeans

hevehiclehasbrokenthroughthecrustand

se,thedrivingwheelswillmerelysinkdeeper

onwill bemademoredifficult.

ough thecrustandbecomesstuck,ade-

emadeinfront(or,if backingout,inrear)of

arendsofthechannelsor matsareona level

tread,andsothatthe slopeofthechannelsis

donethe enginewillbeunabletoset thevehicle

petoenablethewheelsto begintodriveagainst

catingequipment.Onceinmotion,thevehicle

roundorstoppedheadeddownaslopeto avoid

echannelshavebeenloadedon.

ghthecrust whenstarting,vehicles

possible,onhardgroundor headeddowna


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NTIVEMAINTENANCESERVICE

.14

15

ndweeklyservice17

ficiencyitisnecessarythatthevehiclebe

atintervalsduringtheday,andeachweek,in

tenanceservicesbeperformed,andthatdefects

rrectedbeforetheyresultinserious damageor

rthinthis sectionarethoseperformedbydriver

duringoperation,athalt,andafter operation

enanceservicesareoutlinedforall

ackof DriversTripTicketandP.M.Service

.However,inthismanual,certainprocedures

ehiclearedeleted,andinsome casesthereis

calsequenceoftheitemnumbersinorder to

eandeffortin theperformanceoftheservices.

ofeachitemappliesalso toanysupporting

ndusuallyincludesachecktoseewhetherthe

correctlyassembled,secure,orexcessivelyworn.

condition"isusuallyan externalvisual

hethertheunitisdamagedbeyondsafeor serv-

oodcondition,"isexplainedfurtherbythe

ortwisted,notchafedor burned,notbroken

yed,notdentedor collapsed,nottornorcut.

toseethatit iscorrectlyassembledis

nspectiontoseewhetherit isinits "normal

vehicle.

termineifit is"secure"isusuallyan

,ahand-feel,orapry-barcheckforloosenessin

nshouldincludeanybrackets,lockwashers,

cotterpinsusedi ntheassembly.

hisafrequentlyusedterm,willbe under-

o,or beyond,serviceablelimits,andlikelyto

acedbeforethenextscheduledinspection.

ctoryoperatingcharacteristicsbeyond

o correctmustbereportedattheearliest oppor-

dividualin authority.


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ERVICE.

entirelyomitted,eveninextremetactical

hlytrained,driverwillbeableto quicklydeter-

ehicle.

erationserviceconsistsofinspectingitems

heproceduredescribed,andcorrectingor

s.Uponcompletionoftheservice,resultsshould

echiefof sectionorotherdesignatedindividual.

DDAMAGE.Lookforanyinjuryto vehicle

orequipment,causedbytamperingorsabotage,

hell-firesinceparkingvehicle.Lookunder

gor sabotage,suchasloosenedordamaged

orwaterlines,or disconnectedlinkage.

SHER.Inspectforcorrosion,fullcharge,

emounting.

WATER.

ntintankandsparecans.

evel.Maintainleveltofullmark.Addoil

onditionofcoolant,andvalueofantifreeze

OTE:Anyappreciablechangeinlevel

erationserviceshouldbeinvestigatedandre-

ANDDRIVES.Examineallaccessoriessuch

regulator,startingmotor,fuelpump,fuel

orlooseconnectionsormountings,andleaks.

AL.Examinegroundundervehiclefor

er,gearoilor brakefluidleaks.

UP.Startengineandnote anytendency

rankingspeed,improperornoisyengaging

rtercontrolisoperated.Sethandthrottle to

thewarm-upperiodproceedwiththefollowing

s.NOTE;Duringenginewarm-upperiodlisten

nstrumentindicationsandengineperformance

temperaturerise.

tartingengine,test operationofchoke

onnectionsforlooseness.Asenginewarmsup,

preventover-chokinganddilutedengineoil.

malreading40 to45poundsat1000

widle,15pounds.NOTE:Ifgagedoes not

stopengineimmediatelyandinvestigatecause.

estartsandis runningatfastidle,ammeter

e( +)chargeratefor ashortperioduntil

erythecurrentusedin starting.Afterthisperiod


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zeroor slightpositive(-)-)chargewith lights

f.

rapproximateamountoffuelin tank.

havebeenfilledduringthe after-operation

uldregisterfull.

rmaloperatingenginetemperature150F

ureshouldincreasegraduallyduringwarm-up

peratureafterreasonablewarm-upperiodmay

kopen.

NDSHIELDWIPERS.

permitting,testhorn.

pectformissingor damagedbladesor

descontactglassproperly.Startwipermotors

operlythrough theirfullstroke.

EAR-VIEWMIRRORS.Inspectfordam-

s,ordiscoloredglass.Cleanwindshieldglass.

erly.

REFLECTORS.Tacticalsituationpermit-

ee thatalllampslight.See thatlampsare

cleanand notbroken.

FLANGENUTS.Seethattheyare all

ure60pounds (maximum)cool.Look

ere arenoembeddedobjectsintreadsor

DSUSPENSION.Seethattheyare secure

d.

NKAGE.Steeringgearcaseandall con-

cure,notdamagedandnoexcessivelubricant

DBUMPERS.Inspectforloosenessor

ONNECTIONS.Seethattheyaresecure,and

D,ANDTARPAULINS.Inspecttoseethat

and secure.

MINATOR.Mustbesecureandfullycharged.

EQUIPMENT.Present(seetoollistin

perlymountedandstowed.

RATION.Shouldidlesmoothly.Accel-

stenforany unusualnoisethatmayindicate

aks,worn,damaged,looseorinadequately

accessories.Noteanyunusualsmokefrom


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RMITANDFORMNo.26.Mustbe present

elystowed.

RATIONSERVICE.Theduring-operation

ediatelyvehicleisputin motion,inthenature

ERVICE.

on,listenforanysoundssuchas rattles,

hatmayindicatetrouble.Lookforsteamfrom

nypartof vehicle.Knowandwatchforodor

or,brakesorclutch,boilingantifreeze,fuel

ystem,exhaustgasorothersuchsigns of

esareused,gears shifted,orvehicleturned,

oticeanyunsatisfactoryorunusualperformance.

nstantly.Noticepromptlyabnormalinstrument

ypossibletroubleinsystemto whichtheinstru-

erationservicesconsistofobservingitems

heprocedures,followingeachitemandstop-

troubledevelops.Noticeminordeficienciesto

tearliestopportunity,usuallynextscheduled

NDBRAKES.Thefootbrakeshouldoper-

elywithoutpullingvehicletooneside,leaving

-halfinch.Whenvehicleisstopped,hand

satisfactorilywhenonareasonableincline,

ne-thirdoflevertravelavailable.

chpedalshouldhaveViinchfree pedal

todisengage.Shouldnotchatter,squeal,or slip.

N.Gearsshouldshiftsmoothly,operate

of meshduringoperation.

CONTROLS.Beonthealertfordeficiencies

chaslackofusualpower,misfiring,unusual

sofengineoverheatingorunusualexhaust

nginerespondstocontrolssatisfactorilyand

obeinproper adjustment,andnotloose.

S.Observereadingsofallinstruments

ationoffunctioningofsystemto whichthey

ouldreadnormal150Fto 190F(except

.

uldreadnormalat idle15pounds,fast

45pounds.Anyunusualdropor nooilpres-

diatelybestopped.

ation,ammetershouldindicateazeroor

scharge,negative(-)readingmayindicate

rorotherseriouselectricaltrouble.


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nuetoindicateapproximateamountof

metershouldindicatevehiclespeedcor-

everse)withoutnoiseor fluctuation.

AR.Inspectforlooseness,binding,pull-

shimmy,orunusualnoise.

AR.Listenforanyunusualnoises from

onparts,thatmayindicateloosenessordamage.

ert fornoisethatwouldindicateshift-

nor curtains,looseordamagedpanels,hard-

orgunmounts.

regardedasminimumbattlemaintenance,

nderall tacticalconditionseventhoughmore

ervicesmustbeslightedor omittedaltogether.

vicesconsistofinvestigatinganydefi-

ration,inspectingitemslistedbelowaccording

gtheitems,andcorrectinganydeficiencies

rrectedshouldbereportedpromptlytochiefof

dindividual.

DWATER.Replenishasrequired.

ES:HUBS,BRAKEDRUMS,TRANSFER,

ES.Feelforoverheating.Transfercasetem-

another gearcases.

RANSFERVENTS.Wipecleanandexamine

dition.Removeandcleanifnecessary.

HAFTS.Examineforlooseness,damage,

SUSPENSION.Inspectforbrokenor

agedorlooseclips,U-bolts,eye-bolts,shackles,

ge.

KAGE.Examinesteeringcontrolmech-

ordamageorlooseness.

LANGENUTS.Allmustbe presentand

ds (maximum)pressurewhencool.

e.Removestonesfromtreadsandbetween

RAL.Lookunderhood,andundervehi-

l,water,or brakefluidleaks.

ESANDBELTS.Examineforlooseness,

nement.GeneratorbelttensionV2inchdeflec-

flection.


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RS.Mustbesecureandair passages

derextremelydustyorsandyconditions,in-

thercapsfrequentlyforconditionto deliver

asrequired.

DBUMPERS.Inspectforloosenessor

ONNECTIONS.Alltowingconnectionsmust

ocked.

DANDTARPAULIN.Inspectvehicleload

erlysecured,andnotdamaged.

EANDGLASS.Cleanwindshield,door,and

mirror,andlamplenses,andinspectfordamage.

RVICEANDWEEKLYSERVICE.

ngisparticularlyimportantbecauseat

shis vehicletodetectanydeficienciesthatmay

ctsthoseheispermittedto handle.Heshould

spectionpromptlytohischiefofsectionor

al.Ifthisscheduleisperformedthoroughly,

yto rollagainona moment'snotice.The

withafewexceptions,isthennecessaryonlyto

icleisinthe sameconditioninwhichitwas

eafter-operationservice.Theafter-operation

tirelyomittedevenin extremetacticalsitua-

tothe barefundamentalservicesoutlinedfor

sary.

ormingtheafter-operationservicethe

dconsideranyirregularitiesnoticedduringthe

n,during-operation,andat-haltservices.The

onsistsofinspectingortestingthefollowingunits

ganydeficiencies.Thoseitemsoftheafter-

byanasterisk(*) requireadditionalweekly

orwhichareindicatedinsub-step(b)of each

DWATER.Fillfueltanks andsparecans.

pstickandfill toproperlevelwithspecified

dobservefor contamination.Addwaterif

ATION.Testforsatisfactoryengineidle

teanddecelerateengine,notinganytendency

lnoisesor vibrationthatmayindicateworn

correctfuelmixture,orfaultyignition.Investi-

ngine-operatingcharacteristicsnotedduring

S.Beforestoppingengineinspectfollow-

mounting,properconnections,damageand


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ounds,atfastidle.

60F.

chargeat idlespeed,withlightsand

efuelintank.

NDSHIELDWIPERS.Inspecthornfor

erconnections,andwiperarmsandbladesfor

andwipermotorsforsmoothoperationandfull

EARVIEWMIRROR.Cleanrearview

erglass.Examineforsecuremountingand

EFLECTORS.Observewhetherlamps

ositionsand gooutwhenswitchedOFF.In-

greflectorsfordirt ordamage;cleanifneces-

ISHERS.Inspectfortightmountings,

lves.Ifextinguisherhasbeenused,report it

ATOR.Inspectforgoodconditionand

nliness,goodcondition,securemountings

lectrolytelevelandleaks.Seethatventcaps

topof batteryandremovebattery

hcleanwater(distilledifavailable)ifneces-

alsorpostsarecorroded,cleanthoroughly

grease.Tightenterminalbolts ifloose.When

enthemcautiouslytoavoiddamagetobattery

erycarrierifcorroded.

RIESANDBELTS.

neratorandregulator,startingmotor,fan,

onnectionsormountingsandleaks.Examine

ndfandrivebelt.Generatorbelt shoulddeflect

enpulleys.Fanbelt1 inch.

essoriessuchascarburetor,generator

tor,fanandwaterpump,looseconnectionsand

arytoa deflectionofoneinchforfan,Vi inch

ALWIRING.Inspectignitionwiringfor

nlinessanddamage.Makeaninspectionofall

ingfordamageandsecurity.


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RSANDBREATHERCAPS.

rforcorrectlevelandexcessivedirt.When

lydirty,cleanandrefillwithfreshoil.When

yterritory,removebreathercapsat leastonce

ssemble,andcleancarburetoraircleaner,

ndcrankcaseventilatoraircleaner.Fillreser-

eanengineoil.

RS.

on,securityofmountingsandleaks.

plugbottomsideedge(notthe topcen-

d sedimenttodrainoutofthe bowl;replace

urely.

TROLS.Examineforwear,damage,or

properlubrication.

tersuchasnails, glassorstonesfromtires

pecttiresfor signsoflowpressure,abnormal

onofvalvestem.Replacemissingvalvecaps.

rewhencool.

ywornorotherwiseunserviceabletires.

DSUSPENSIONS.

ormalsag,brokenor shiftedleaves,loose

ye-bolts,U-boltsorshackles.

elyandalineasnecessary.

NKAGE.Inspectsteeringlinkageforgood

uatelylubricatedparts.Examinesteeringjoints

eaks.

SHAFTS.Removedirtandexcessgrease

ointsandinspectfor looseconnections,lubri-

emoveanyforeignmaterialwrappedaround

ANSFERVENTS.Examineallaxlehous-

presence,goodconditionandsecurity.Freeall

ons.

ERAL.Lookunderhoodandbeneath

el,oilandwater leaks.Checkaroundbrake

or lubricantleaks.Examineaxleflanges,

e,anddifferentialsforgearoilleaks.Traceall

orrector reportthem.

VELS.Checkdifferentials,transmission,

ectlubricantlevel,fromVzinch below,tofiller

PublicDomain,

Google-d

igitized

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athitrust.org/access

_use#pd-g

oogle

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DBUMPERS.Inspectforsecurityand

NNECTIONS.Inspecttowinghooksand

rdamage.Besure anytowedloadissecure

operly.

DANDTARPAULIN.Inspectcargobody

eormissingparts.Seethat loadisevenlydis-

ulinshouldbesecureandnot damaged.

ting,rim,axleflangeand springU-bolt

icleassemblyormountingnutsor screws

sisnecessary.

N.

einspectionrevealsneedfor lubrication.

beforeapplyinglubricant.Reportanymissing

ointsindicatedonvehiclelubrication

nona weeklyormileagebasis,oranypoints

enceindicateadditionallubricationisneces-

INEANDVEHICLE.

ominsidecabandbody.Removeexcessive

orof vehicleandengine.

andremovealldirtand excessgrease.If

peascleanaspossible,usingcarenot tocreate

Cleanengineand accessoriesthoroughly.

DEQUIPMENT.Checkalltoolsandequip-

gainststowageliststo besuretheyarepresent,

perlystowedandmounted.

PublicDomain,

Google-d

igitized

/http://www.h

athitrust.org/access

_use#pd-g

oogle

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bricatedby ordnancemaintenance

alpartof preventivemaintenancedeter-

heserviceabilityofpartsandassemblies.

tructionsforthismaterielareconsoli-

e(fig.21). Thesespecifythepointstobe

ubrication,andthelubricanttobe used.In

eguide,othersmallmovingparts,suchas

elubricatedatfrequentintervals.

maynotbepossible tosupplyacom-

antscalledforbythe LubricationGuidetomeet

willbenecessarytomakethebestuse ofthose

ctionbytheofficerconcerned,inconsultation

epersonnel.

ollowingnotesapplytotheLubrica-

cesinthe guideitselfareto thesubparagraph

ondingnumber.

eapplyinglubricant.Lubricateuntilnew

ebearing,unlessotherwisespecified.CAU-

ointsafterwashingvehicle.

ndicatedarefornormalservice.Forex-

,heat,water,sand,mud,snow,roughroads,

byJ/or V2,ormoreifconditionswarrant.

checkengineaircleanerlevelandrefill

withusedcrankcaseoilorOIL,engine,crank-

iles,dailyunderextremedustconditions,re-

parts.Daily,checklevelandrefill oilreservoir

eaircleanertooil levelstampedoninsideof

caseoilorOIL,engine,crankcasegrade.Every

xtremedustconditions,removecleanerand

0miles,removehydrovaccylinderaircleaner,

rovaccylinder,washcurledhairandreoilwith

engine,crankcasegrade.

cleanersisessentialtoprolongedenginelife.


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ywhenengineishot.Refillto FULL

afew minutesandrecheckoillevel.Besure

iscirculating.SeeTable.

0miles,drainfilterthroughdrain plug.

oftenif filterbecomesclogged,drainfilter,

nd renewfilterelement.Afterrenewingele-

ULLmarkongage.Runengineafew minutes,

o FULLmark.

checklevelwithtruckonlevelgroundand,

ttowithinVzinch ofpluglevelwhencold,orto

flushand refillatintervalsindicatedon

nimmediatelyafteroperation.Keepvents

about V2capacitywithOIL,engineSAE10.

ncasesslowlyforseveralminutesandredrain.

fillcasesto correctlevelwithlubricantspeci-

ALJOINT.Every1,000miles,apply

,seasonalgrade,sparinglythroughfittinglo-

llmember.Every6,000miles,repackfront

member.Thisoperationrequires theremoval

e skeins.Cleanoutalloldgreasefrom theball

drepackwith11/2Ib ofGREASE,generalpur-

DSOCKET.Every1,000miles,lubricate

ndlowersocketbearingsthroughfittingslo-

eachsocketwithGREASE,generalpurpose,

.

ntandrear).Tocleanandpackbearings

movedfromthehub.Followthe procedure

hubandwashin SOLVENT,dry-clean-

ntisremovedfrombothinside andoutside

y andwashinsideofhuband spindle

ng.

oughlydry,packraceswithGREASE,

reassembleinhub. Tosatisfactorilypacka

kneadlubricantbyhandintospacebetweenthe

nsideofhub andspindlewithathin coatof

Donot fillhub.Thelubricantpackedinbear-

vide lubricationuntilthenextserviceperiod.

kageoflubricantinto thebrakedrum.

ustbearingsaccordingtoinstructionsin


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EMBLED

00to1,000miles,or moreoftenifnec-

ratingconditions,removepluganddrainsedi-

emovefilterbowlandwashelement.

ER.Every6,000miles,removepluginfront

omatmosphericconnectionofcenterplate,

2oz.of OIL,hydraulic,througheachplughole.

JOINTS.ApplyGREASE,generalpur-

niversaljointuntilit overflowsatreliefvalve

antisforcedfromendof slipjoint.

2,000miles,wipedistributorbreakercam

ralpurpose,seasonalgrade,andlubricate

mshaftwickunderrotorwith1 or2dropsof

ade.

ry1,000miles,lubricateacceleratorcon-

handle,centerdifferentiallocklinkage,foot

-offshiftlinkage,emergencybrakelinkage,

hookwithOIL,engine,crankcasegrade.

Every1,000miles,applyFLUID,brake,

erlinkbushings.CAUTION:Donotuseoil.


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oLUBRICATIONSERVICE.Clutchpilot

s.

EDAND/ORLUBRICATEDBYORDNANCE

EL.Speedometercable(par.20).

ugh27showl ocalizedviewsofspecific

EDAND/ORLUBRICATEDBY

EPERSONNEL.

ery6,000mileslubricatecable.Follow

ftatspeedometerhead.

onfulofGREASE,generalpurposeNo.0,

orethroughthegreaseandbackinto thecasing.

thendsandreconnecttheconduits.

cumstancesshouldthecasingbefilled

RDS

structionsarecloselyfollowed,proper

actoryresultsarenotobtained,areport willbe

cerresponsibleforthemaintenanceofthe

cordoflubricationservicingwillbekept.


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n-

e.

ywhenen-

markon

nutesand

N:Besure

entpanelin-

ngine.

efromun-

owsateach

ngandShafts.Lu-

erchassis.

te

ease

salJoints.Lubricatefrom

wsthroughsafetyvalve.

cation


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erShaft

e,fromun-

through

rShaftUni-

omunder

saround

romunder

atball

n-

cket.Four

t topand

nderchassis.

Lubricate

easeshows

tedailyin

cation


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er.Lubricate

egrease

the engine

every1000

llat 6000

case.

CAP

wickbe-

reedrops.

es.

bricate

Grease

r.Inspectfluid

rto1/2inch be-

cation


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every1000

llat 6000

ndRear)

rain,

les.Clean

g.

Allplugslo-

.Checkweekly

ush,andrefill

oint.Re-

ointand

iles.

pectfluidlevel,

valsof6000

st.Fillreser-

ghole.

kwheel

.

atefromun-

sthroughvent.

miles.

cation


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REREFILLING

ckAbsorbers


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SERVATION

mustbekeptof eachmotorvehicleissued

ent.ForthispurposetheOrdnanceMotorBook

erallycalled"LogBook,"isissuedwitheach

anyitatalltimes.This bookfurnishesacom-

fromwhichvaluableinformationconcerning

cecosts,etc.,areobtained,andorganizationcom-

orrectentriesaremade.This bookwillhabitu-

overtopreventitsbeinginjured orsoiled.

ordofassignmentmustbedestroyedprior

e.Allotherr eferenceswhichmaybeposted

eorganizationmustalso bedeleted.

hesourcesofgreatestwearto avehicle.

reallowedto accumulate,particleswillsoon

surfaces,causingunnecessarywear,andifthe

willsooncauseseriousdifficulty.Whenre-

yotherunits, inmakingrepairsandreplace-

ofinspectionworkingjointsorbearingsurfaces

andgritthat mightfinditswayto theexposed

fullyremoved.Thetoolsmustbe clean,and

toeliminatethe possibilitiesofbrushingdirt

ththesleeveorotherpart oftheclothing.To

hardenedgrit,or roadoil,useSOLVENT,

rags(notwaste)ora brush.Thevehicleisso

tyofinterferingwith itsproperoperationby

aningwaterisverysmall.However,careshould

mthe powerunit,asitmight interferewith

etion.

rsteam-cleaningdevices,particularat-

tothe properprotectionofallelectricalequip-

chassis,andbodies ofthevehiclesbeing

omthe cleaningnozzlemustnotbeapplied

ssories.Steamormoistureforcedintotheequip-

shortcircuitsand corrosionoftheinternalparts.

erators,starters,distributors,etc.,shouldbe

ry-cleaning.Theseelectricalaccessories


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SERVATION

priorto cleaningthevehiclewithanytypeof

apor-cleaningmachine,orhaveadequatepro-

detheentranceofmoistureduringthe opera-

omecloggedshouldbeopenedwitha

neverbeused forthispurpose,assplinters

permanentlyclogthepassages.Particularcare

d decontaminatevehiclesthathavebeen

esectionIX, "MaterielAffectedbyChemi-

ration.)

he vehicleshouldbekeptpainted

olorscheme.Exposedmetalpartsthathave

illbekeptin awell-paintedcondition;how-

eunpaintedwhenthematerielwasreceived

on.


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ONTHEVEHICLE

nincludestools andequipmentforgeneral

hevehicle;anOrdnanceMotorBooktorecord

ualpertinenttovehicleoperation,anda parts

houldnotbe usedforpurposesotherthan

use shouldbeplacedintheirproper location

y

atureList1

earereviewedin StandardNomenclature

asfollows:

hillips..1


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ONTHEVEHICLE

1

1

gle,

.x7/ie-in...1

x'%2-in...1

.x* Vie-in...1

.x2%2-in...1

.x7/8-m..1

brg.nut)1

e)1


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HEMICALS

tomotivemateriel31

RES.

stantdangerofgasattack,unpainted

coatedwithengineoil.Instrumentsarein-

be protectedbyoilfromchemicalcloudsor

betakenthatthe oildoesnottouchleather

notinuse willbeprotectedwithcoversas

acticallynoprotectionagainstmustard

oilcloth,forexample,willbe penetrated

ger theperiodduringwhichtheyareexposed,

earingthese articles.Rubberbootswornin

hmustardgasmayofferagrave dangertomen

ysafterthebombardment.Impermeable

tionmorethananhour, butshouldnotbeworn

sof materielthathavebeenexposedto

ndlewisitemustbe cleanedassoonaspossible

ng,orALCOHOL,denatured,andwipeddry.

oatedwithOIL,engine.

chemicals(mustard,lewisite,etc.)from

psshouldbetaken:

ES.

onsacompletesuitofimpermeable

maskwill beworn.Immediatelyafterremoval

hwithsoapandwater(preferablyhot)must

havecomeincontactwithmustard,ifevena

gets intotheeye,orif thevaporofmustard

perativethatcompletefirst-aidmeasuresbe

utesafterexposure.First-aidinstructionsare

21-40.

mustardgasmustbe decontaminated.If

hasbeenexposedtovaporonly,it maybede-

intheopenair,preferablyin sunlight,forsev-

eanedbysteamingfortwohours.If theim-

eencontaminatedwithliquidmustard,steam-

illberequired.Variouskindsof steamingde-

ommaterialsavailableinthefield.


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HEMICALS

materielofdirtthroughthe useofsticks,

beburnedor buriedimmediatelyafterthis

terieliscoatedwithgreaseor heavyoil,

eremovedbeforedecontaminationisbegun;

otheravailablesolventsforoil shouldbe

endsof sticks.

ntedsurfacesofthematerielwithbleach-

gonepart AGENT,decontaminating(chlor-

water.Thissolutionshouldbeswabbedover

oughlywithwater,thendryand oilallsur-

tsand instrumentsexposedtomustard

contaminatedwithAGENT,decontaminating,

partsolidtofifteenpartssolvent(ACETY-

thisis notavailable,usewarmwater

onmustnotbeused,becauseofits corrosive

ceslightlywithOIL,engine.

econtaminating(chlorideoflime),is

ybetemporarilycleanedwithplentyofhot

lyinginjointsorin leatherorcanvaswebbing

cedure,andwillremainaconstantsourceof

anbe properlydecontaminated.Allmustard

ismannerlies unchangedontheground,ne-

minatedareabeplainlymarkedwithwarning

t.

minatingofmaterielcontaminatedwith

ompoundsintothesoil,poisoningmanywater

bothmenandanimals.

bingthathasbeen contaminatedshould

thbleachingsolution.Intheeventthis treat-

be necessarytoburnorburysuchmateriel.

ndecontaminationiscontainedinFM21-

1941(Decontamination).

SFORAUTOMOTIVEMATERIEL.

ensubjectedtogasattackwiththe engine

ouldbe servicedbyremovingtheoil,flushing

ng,andrefillingwiththe propergradeofoil.

dbecleanedin thesamemannerasout-

hionswillbediscarded.

entsthoroughlywithbleachingsolution

neinthe field.Operatorsshouldconstantlybe

under conditionsofhightemperatures,for

ustardorlewisite.

cleswillbedecontaminatedwithbleach-

aybenecessaryafterthisoperation.


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ENANCEINSTRUCTIONS

N

e33

ceandrepairbythe crewandotherunits

minedbytheavailabilityofsuitabletools,avail-

capabilitiesofthemechanics,timeavailable,

Alloftheseare variableandnoexactsystem

ribed.

TENANCE.

maintenancedutiesforwhichtoolsand

ortheusing armpersonnel.Otherreplace-

responsibilityofordnancemaintenanceper-

edbyusing armpersonnelwhencircum-

discretionofthecommanderconcerned.Eche-

thislist ofmaintenanceallocationsaredefined

ts,battalions,

andseparate

ncecompanies,

enancecom-

almaintenance

nceshops.

ancecompanies,

ops.

s,ordnance

ufacturers'

ning,lubricat-

ts,and mak-

ofsubassem-

ntrols.

art,subassem-

ehiclesand

reconditioned

yorassembly,

e.


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N

grepairsto,orreplace-

mentofthe part,subassemblyorassem-

thatcan beaccomplishedwithout

emblingthesubassem-

snot require

,machining,

ancing.

pletelyreconditioning

ndreplacingin serviceablecondition

unserviceablepart,subassemblyor

hicle,includingweld-

tting,alining,

ndtesting.

tenancedutiesforwhichtoolsand parts

eusingarms personnel.

LINKAGE

ge,assemblyreplace.X

ge,assemblyrepair..X

ge,assemblyrebuild.EX

eplaceEX

eplace* X

pairX

buildEX

adjust)andreplace... X

ervice(adjust)X

replaceX

ceX

rX

edwillnormallybeperformedinthe

eechelonsasindicatedby"E"maybe

ectiveechelonsinemergenciesonly.

horizedtoremoveandreinstallengine and

transferunit,controlleddifferentialassembly

yan asterisk.However,whenitisnecessary

byan asteriskwithaneworrebuilt part,

mbly,theassemblymarkedbyanasterisk

e vehiclebythesecondechelonuntil

romahigherechelon.


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djust)andreplaceX

ne)X

service(adjust)X

erandcasterservice

erandcasteraline....EX

X

X

adjust)andreplace...X

ervice(adjust)X

replaceX

djust)andreplaceX

ne)X

EX

eplaceX

epairEX

vice(adjust)andreplaceX

airX

lyreplaceX

lyrepairX

lyrebuildX

c)replaceX

c)repair'X

c)rebuildX

...X


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N

(adjust)andreplace....X

eline)X

laceX

airX

rrepairX

X

eX

mblyreplaceX

mblyrepairEX

mblyrebuildX

emblyreplaceX

emblyrepairX

emblyrebuildEX

laceX

airX

yreplace* X

repairX

rebuildEX

laceX

airX

placeX

adjust)andreplace..E X

reline)X

EX

laceX

airX

X.

service(adjust)X

(flush)X

eplaceX

aceX

irX

ildEX


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eorreplaceX

X

y(generatorcontrol)

y(generatorcontrol)

X

y(generatorcontrol)

X

X

dstowagereplace....X

dstowagerepairX

aceX

airX

uildX

st)andreplaceX

ngineModel6BZ)

(inserts)replaceEEX

erts)replaceEEX

dreplaceX

condition)EX

rvice(adjust)andreplaceX

pairX

buildX

an)andreplaceX

eplaceX

laceX

airX

ondition)EX

placeX


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N

pairX

buildX

ce* X

X

dEX

ceX

dtion)EX

dmanifoldreplace...X

aceX

placeX

pairX

buildX

vice(adjust)andreplaceX

uildEX

X

econdition)EX

aceX

irEX

ceandrepairX

X

ce(clean)andreplace

ceorrepairX

eEEX

repairX

rreplaceX

placeX

pairEX

buildEX

aceorrepairX

uildX

replaceX

repairX

rebuildX

EEX


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placeX

adjust)X

replaceX

tetrachlorideCCIO

X

tetrachlorideCC14)

tetrachlorideCCIO

replaceX

repairX

X

EX

n)andreplaceX

replaceX

repairEX

ES

eplaceX

epairX

ebuildEX

eX

X


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ON

rsaljoint8(all)replaceX

er8aljoints(all)repairX

er8aljoint8(all)rebuildEX

replaceBX

repair,X

rebuild'.,EX

place,X

pairX

bber)replaceX

ce...,,X

r,,,X

ldEX

ce.,,X

placeorrepairX

replace* X

repair,X

rebuildEX

mblyserviceX

blyrebuild(with

XE

eX

,.EX

service(adjust)and

repair(reline).,'X

placeX


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replaceX

repairX

laceX

airX

replaceX

repairX

rebuildEX

X

X

EX


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IVEMAINTENANCESERVICE

vemaintenanceservice34

EVENTIVEMAINTENANCE

ntenanceinspectionsandservicesarea

functionoftheusing arm,andaretherespon-

operatingorganizations.

uenciesofthepreventivemaintenance

econsideredaminimumrequirementfornor-

Underunusualoperatingconditionsitmaybe

ainmaintenanceservicesmorefrequently.

TCIPATION.Thedriversshouldaccompany

emechanicswhileperiodicsecond-echelonpre-

vicesareperformed.Ordinarilythedrivershould

heduledpreventivemaintenanceserviceina

n;thatis,itshouldbedry andnotcakedwith

extentthatinspectionandservicingwillbe

ever,thevehicleshouldnotbewashedorwiped

ertaintypesofdefects,suchascracks,leaksand

sembliesaremoreevidentif thesurfacesare

n thosecontainedinthegeneralproce-

cificprocedureinsubparagraph(5)arere-

ormanceofapreventivemaintenanceservice

ency,themotorsergeantor thevehicleoper-

nsulted.

S.Thesegeneralproceduresarebasicin-

ollowedwhenperformingtheserviceson the

pecificproceduresofparagraph(5).NOTE:

nnelmustbesothoroughlytrainedin thesepro-

ythemautomatically.

edsubassembliesareinstalledto correct

betakentoseethattheyare cleanandproperly

ricantretainerseals,a coatingofthe

overthesealingsurfaceof thelipofthe seal.

therseal,itshould besoakedinSAE10 engine

ratleast 30minutes.Thentheleatherlip

ybyhandbeforeinstallingthe seal.Thelip

arred.

ofeachitemappliesalso toanysupport-

,andusuallyincludesachecktosee whether

on,correctlyassembled,secure,orexcessively


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stbethoroughlytrainedinthefollowingex-

onditionis usuallyanexternalvisualin-

ethertheuniti8damagedbeyondsafeor satis-

oodcondition,isexplainedfurtherby8uch

tbentor twisted,notchafedorburned,not

eorfrayed,notdentedor collapsed,nottorn

toseethatit i8correctlyas8embledisusw-

ectiontodeterminewhetherit isinits normal

vehicle,

etermineifit issecureisusuallyan ex-

hand-feel,orapry-barcheckforloosenessin

nshouldincludeanybrackets,andall lock

gwires,orcotterpinsusedto securethetight-

hisafrequentlyusedterm,willbe under-

-toorbeyondsatisfactorylimits,andlikelyto

acedbeforethenextscheduledinspection.

eareindicatedbyaddeditemnumbers

columnorboth,andindicatethat thepartor

tainmandatoryservice8,Forexample,anitem

umnsoppositeaTIGHTENprocedure,means

ofthe objectmu8tbeperformed.Thespecial

ryadju8tmentsinaccordancewiththe

,specialbulletins,o'rothercurrentdirectives.

vehicletoremoveexcesslubricant,dirt,

cleaning.Afterthepartsare cleaned,rinse

themwell,Takecaretokeeptheparts clean

keepcleaningfluidawayfromrubberor other

ge.Cleantheprotectivegreasecoatingfrom

usuallynot agoodlubricant.Cleanhydraulic

nbrakefluid.Do notusesolventcleaning

applieseithertolubricationoperations

on thevehiclelubricationchart,orto-items

rts butwhichshouldbeperformedinconnec-

operationsifpartshaveto bedisassembled

allyconsistsof performingspecialoper-

ngbatterywater,brakefluid,andshockabsorber

unit8with oil,andchangingtheoilfilter

perationsshouldbeperformedwithsuf-

ceonthewrenchhandle)totightenthe unit


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nicalpractice.Usetorque-indicatingwrench

ertighten,asthismaystrip threadsorcause

alwaysbeunderstoodtoincludethecorrect

s,locknuts,andcotterpinsprovidedto secure

itdifficulttoperformthe completepre-

viceatonetime,itcansometime8behandledin

pletealloperationswithintheweekifpossible.

est periods,andinbivouacarea8mustbe

urethat maintenanceoperationsarecompleted.

alsituation,itemswithSpecialServicesin the

rstconsideration.

eventiveMaintenanceProceduresthatfol-

eoutlinedon WDAGOFormNo.461,which

nceServiceWorkSheetforWheeledand

inproceduresthatdonot applytothisvehicle

lsequenceingeneralisfollowed,butin some

conservationofthemechanic'stimeandeffort.

ES.Theseprocedure8forperformingeach

onthly)and6000miles(six-month)preven-

onsandservicesaredescribedonthefollowing

arthas twocolumnsatitsleftedge correspond-

he1000miles service,respectively.Veryoften

cularproceduredoesnotapplyto both8erv-

whichproceduretofollow,lookdownthe col-

servicedue,andwhereveranitemnumber

ectionand/orserviceindicatedoppositethe

etacticalsituationdoesnotpermit afullroadtest,

mswhichrequirelittleor nomovementofthevehicle.

ble,itshouldbefor preferably5andnotover

ce.Performthebefore-operationserviceas

,asa checktodeterminewhetherthevehicle

ontosafelymaketheroadtest.

.

angeis 40to45poundswith engineat

gageindicateszeroorexcessivelylow

ediatelyandinvestigate.'

dshowhighchargeforashorttime after

slightlyabovezerowithalllights andelec-

doff.Whenbatteryislow,ahighercharge

longer periodoftime.

ermustoperatewithoutexcessivefluctua-

exceed190F.Dangertemperatureisat

chon,see thatfuelgageregistersapprox-


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dshieldWipers.Whentacticalsituation

ean,andsecurerear-visionmirrors.Operate

n,adjustarmsandreplacebladesiffaulty.

.Makefirst brakecheckfromlowspeed

ontinuetestsas otherstopsaremade.

muststopthevehiclesafelyata fast

stance;operatewithgoodeffectiveness;

deratebutnot"hard"or "spongy"feel.Front

ehicletooneside.Listenforany objection-

rvepedaltravelat theendofthestop should

rakeisset,it mustholdvehicleeffectively

ravelshould bereserve.

ng,dragging,chatterornoisethatmightindi-

efectiveclutchparts,ordryreleasebearing.

velofJ to1%inchesbeforemeetingresist-

speedin highgeardepressacceleratorfully,

slightly,andobserveif clutchappearstoslip.

sfer.Withvehiclein motion,shiftthrough

ansmissionandseethatshiftermechanism

ashingorjumpingoutofgear, thatthelocking

eratesfreely,whetherthereareanyunusual

ateloosemountings,andwhetherthereis

icleinmotionmovesteeringwheelfullyin

vewhetherthereisany indicationoflooseness

ndencytowander,shimmy,orpulltoone

edatnormal speeds.Steeringcolumnand

ood conditionandsecure.

noteanytendencyoftheengineto stall

gears.Withthevehiclestopped,observe

oothlyatnormalidling speed.

oise.Observeifenginehas normal

erandoperatingcharacteristicsineachspeed

gearrangefromfirst tohigh.Makeasimilar

omlowspeed withwide-openthrottle.During

usualenginenoisesuchas excessive"ping,"

mingortoolow octanefuel.Listenforother

damaged,excessivelywornorinadequately

accessoriesorloosedrivebelts.

hicleinsecondgear,slowlydepressthe

ndbyobservingspeedometerreading,seeif

notexceed,thegovernedspeedspecifiedon

ert foranyunusualnoisethatmayindicate

ssivewearinbody,wheels,suspensionassem-

quipment.

ationHydrovac.Testbrakestolearnwhether

sinapplication.Aquicktestis tostopvehicle,

tenfor airmovementinthehydrovacunit

epedalis beingoperated.

ercompletingroadtestrun.)

elallbrakedrums andwheelhubs

mperatures.Anoverheatedbrakedrumor


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of adraggingbrake,ora defective,dry,or

elbearing;anabnormallycoolbrakedrumis

tivebrake.

Transfer.Cautiouslyfeelaxlediffer-

mission,andtransfercaseforoverheating.If

lyhot,forthe distancetraveled,anabnormal

cated.

nginecompartmentandundervehicleforindica-

brake fluidleaks.Tracethemtotheir

ortthem.

eaks.Examinedrivingaxles,transmissionand

andleaks.NOTE:Thesaferange levelis

fillerholewhenhot,to J inchbelowwhen

bricationrecordsindicateachangeofoilin

ndrefilltransmission,transfercase,andfront

drefill withspecifiedlubricant.

NS

ly)

the enginerunning:

ories.Accelerateanddecelerateengine

orunusualnoisethat mightindicatedamaged,

engineparts,drivebeltsor accessories.Locate

nusualenginenoise heardduringroadtest.

ropellerShaftsandU-Joints,Axles

transmissioninintermediategear,operate

oderatespeedbyuseof thehandthrottle,

oisethatmightindicatedamaged,looseor

s.Alsoobserveallpropellershaftsfor vibra-

onsin theotherunitswhichmayindicate

ocate,correctorreportanynoisenotedduring

ES

asket.Checkforcracksor indicationsofoil,

ksaroundstuds,capscrews,andgaskets.

shouldnotordinarilybetightenedunless

ofloosenessor leaks.

ustvalvestemclearanceifvalvesarenoisy.

nchand exhaust0.014inchto0.016inch

kingcovergasketmustbereplaced.

ngs,andlocksarein goodcondition,correctly

arancesintake0.010inchto0.012inch

0.016inch(room temperature),makingsure

clearancesarelastcheckedduringadjustment.

nd examineinsulatorstoseeiftheyare cracked.

nch.Testcompressionbeforereinstallingplugs.

stcompression.Compressionof85poundsat

otvaryingmorethan10poundsbetween

npressuremaybeconsiderednormal.

d-downs,Carrier,SpecificGravity).Ex-

dryexterior,cables,andterminals.Grease

ownbolts.Testspecificgravity,normal1.275

rless. Bringelectrolytelevelto%inch


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hargetestofthe battery.Reportifdiffer-

ellsismore than30percent.

crankcase,valvecovers,timinggearcover,

aks,and checkoillevel.

onlubricationrecordsindicateanoilchange

drefillto properlevelwithspecifiedoil.Do

itemnumber24iscompleted.

pectfor leakage,looseconnectionsor

Cleanoilfiltercase,installnew filtercart-

ngs,Hose,CapandGasket).Observefor

kage.Checkcoolantforcontamination.

sused,checkprotectivevaluefortemper-

thedirt,insectsandtrashfromthe exterior

ngsandhose.

hroud.Observewaterpumpforleaks.

loosebearings.Inspectfan bladesandshroud

Switch.Examinemountingsandwiring

ditionandsecurity.

ncoversandinspecttoseethatcommutators

onditionandnotexcessivelyworn;thatbrushes

ush-connectingwiresaresecureand not

ormustbecleanedwith00flintpaperaccord-

manual,Par.82b.Blowoutthe dustwith

tartingmotormountingnutssecurely.

Checkfanand generatordrivebeltsfor

pulleysandhubsfor goodconditionand

rdrive.beltstoJ -inchdeflectionandfanbelt

tributorand externalattachmentsandex-

correctassembly,securityandserviceability.

drotor arm,corrosionofterminalsand

oftheouterendsofconductorstrap.Breaker

ndition,alined,andadjustedto0.020-inchgap.

rexcessivelyworn.

emblyisexcessivelyworn,dirty,remove

t,drywithcompressedair,lubricateasspeci-

positionfor timing.Whencleaningremove

p.Cleanwhileremovedandreinstallonly

scleanedanddried.Lubricatecamsurface,

wickandcamshaftwithlightoil.Adjust

nch.

ness.Testcentrifugaladvancetoseewhether

edbyfingerforcethroughnormal rangeof

entrifugaladvancemechanism,andreturns

dingorsticking.

coil forgoodcondition,cleanlinessand

geignitionwiring,includingshieldingor

in goodconditionandsecurelyfastenedat

terminals.Seethatinsulationand connections

oltagewiringin theenginecompartmentin


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takeandexhaustmanifoldforgood condition,

ketsforleaks.

arburetoraircleanerfor goodcondition,security,

ditionofthecleaningelement,bafflesandseals.

ervoirtocorrectlevelwith specifiedoil.

entilators.Inspecttosee thattheyarein

assembled,secure,andthatventilatortubes

ments,cleanbothelementandbodyinsolvent,

oil. Cleanandserviceoilbathcylinder-head

eras foritem34.

Throttle,Linkage,andGovernor).Inspect

dcondition,correctlyassembled,secure,that

ndthatgovernoris properlysealed.

s.Inspectfuelfilter,sedimentbowl,fuellines

ttheyare ingoodcondition,secure,andnot

wlandelement,andcleaninsolvent.Include

arburetorfuelline connectionorfuelpump.

ets.Afterassembling,recheckforleaks.

ueland vacuumpumpforgoodcondition,se-

stgageandwiththe engineidling,note

eandvacuumaresatisfactory.

observingwhethergeneralactionof starting

cularlywhetheritengagesand'disengages

enoiseandhasadequatecrankingspeed,and

dily.

ecompartmentandunderthevehicleforengine

aterleaks.

ckandset accordingtoinstructionsinpar.85

uumTest.Connectavacuumgagetointake

tsnormalidle speedbymeansofthrottle

eidle-mixtureadjustingneedleuntilvacuum

reading.Ifthislatteradjustmentchangesidle

dlespeedandmixtureuntilboth aresatis-

erveifit isingoodconditionandif connections

.Connectlow-voltagecircuittesterandtest

regulatorandcut-outforpropergenerator

nstructionswhichaccompanythetest

ACHMENTS

pectasfollows:

pectvalvestemsforgoodcondition,cor-

alvecaps arepresentandsecure.

.Inspecttiresforcuts,bruises,breaks,

ead wear,watchingforanysignofflatspots,

ndone-sidedwear.Anymechanicaldeficiencies

houldbedeterminedandcorrectedorreported.

,nailsandstones.Thewheelpositionsoftires

bechangedfronttirestorear wheelpositions

non-directionaltiresshouldnotbein-

ltiresshould bemountedsothat"V"of

kingfromfrontofvehicle.


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operlyinflated,inspectformatching

mference,%-inchvariationpermissible.

tsparetirecarriersfor goodcondition

rims andtheirlockringsor flangesare

re.Tightensecurely.

tandserviceasfollows:

emovedirtandgrease andinspecttosee

on,securelymounted,andnotexcessively

rveiftheyarein goodcondition,securely

Tightenthebrakesupportanddrum mount-

inings,Links,Guides,andAnchors).In-

s:

ghinspectionholesor openingsinbrake

whethertheyaresowornthat rivetheadsmay

000milesof operation.Ifliningsarenotvisible,

drum forinspectionofbrakeliningsbymotor

ethertheyshouldbereplaced.Iflinings onthis

ced,removeallwheelsandservicetheir brakes

an,lubricateandadjustall removedbearings,

lar inspectionofbrakeliningsshouldbe

ybeenoperatedindeep water,mud,loose

veenteredbrakedrum.

ingsarein goodcondition,secure,ingood

ms,freeoflubricantorbrakefluid,and not

seethatbrakeshoesarein goodcondition;

edbyanchorbolts,connectinglinks,guides

eturnedagainsttheir camorstopsbythe

ustfromtheliningswith awirebrush,clean

Aftercompletion,adjustbrakeshoesbyminor

ningshaveproperclearancesfrombrakedrums.

eninstalled,adjustshoesby themajor

gs,Seals,DriveFlanges,andNuts).Inspect

follows:

twheelsare ingoodcondition;revolve

aveexcessiverun-out.

utremovingrearwheels,examinefor

wheelbearingoradjustment.Revolverear

tionsofdry ordamagedwheelbearings.

roundbrakesupportsanddrums forlubricant

ecktoseethat theyareingoodcondi-

0-mileservice,ifvehiclehasrecentlybeen

ichmayhaveenteredwheelbearings,remove

bearinglubricantappearsto becontaminated.

gsoftheone removedwheelbeforeitisre-

ectionsofwheelbearinglubricantaremade,

gsto seewhethertheyareexcessivelyworn.

hebearings andoilseals.Cleanthoroughlyand

ces,andcagesto seethattheyarein good

psaresecure.Alsoexamineto seeifthe


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whichthebearingsareassembledareingood

arereinstalled,lubricatethewheelbearings

t,thenbackoff%turn.

Supports,andCylinders).Inspectand

ovedirtandgreaseandexaminedrums

dition,securemounting,excessivewearor

eforgoodconditionandsecuremounting

kesupportanddrum mountingboltsse-

plateforalinementanddistortion.

nings.Links,Guides,andAnchors).In-

s:

hinspectionholesoropeningsin brakedrums

they aresowornthatrivet headsmayscore

esof operation.Ifliningsonthiswheel brake

eallwheelsandservicetheirbrakessimilarly,

teandadjust allremovedbearings,andto

pectionofthebrakeli ningsshouldbemade

noperatedindeep water,mud,loosesand,or

edbrakedrum.

ngsareingood condition,tightlyscrewedto

ngcontactwiththedrums,freeof lubricant

cessivelyworn.Alsotoseethatbrakeshoes

erlysecuredandguidedby anchorbolts,

ndsprings;andproperlyreturnedagainstcams

gs.Cleanall dustfromliningswitha wire

pressedair.

sandinspectionsofall followingitemstoand

pleted,adjustbrakeshoesbyminoradjust-

veproperclearancesfrombrakedrums.

eeninstalled,adjustshoesby majoradjust-

oints,Bearings,Seals,andBoots).Inspect

mineknucklehousingsandsteeringarmsfor

whetheroutsidesealisingoodconditionand

fthelubricantfromeachknuckle;inspectit

ndcleanthe steeringknuckleandaxleU-joint

whetherdisassembledknuckleandjointparts

e knucklepivotbearingsanddrivejoints

eandadjustthepivotbearing.Whenreassem-

nstallanyrequirednewlubricantretainer

Leaves,U-Bolts,Hangers,andShackles).

re ingoodcondition,correctlyassembled,and

gshaveexcessivesag.TightenU-boltssecurely.

od,Drag Link,Seals,PitmanArms,Gear,

minetoseethattheseitemsare ingood

ecurelyassembledandmounted,andwhether

ntisat theproperlevelandnot leaking.Note

actoryadjustment.

aftnut andsteeringgearcaseassemblyand

ecurely.CAUTION:Loosenthesteering

teningthesteeringcasemountingnuts,soas


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ersandLinks.Examineshockabsorberbodies

n,securityandfluid leaks.

orberbodieswithspecifiedfluid.Workthearm

.Repeatthis operationuntilallairis expelled

sconnectthelinkandchecktoseethat the

actingshockabsorbershouldhaveresistance

gs,Seals,Flange,AxleEndPlay,and

theseitemsasfollows:

twheelsare ingoodcondition,revolve

aveexcessiverun-out.

utremovingfrontwheels,examinefor

wheelbearingoradjustment.Revolvefront

tionsofdry ordamagedwheelbearings.In-

oundbrakesupportsanddrums forlubricant

ecktoseethat theyareingoodcondition

e,ifvehiclehas recentlybeenoperatedin

veenteredwheelbearings,removeonewheel

ricantappearstobe contaminated.Cleanand

neremovedwheelbeforeit isreinstalled.

wheelbearinglubricantaremade,alsoinspect

hethertheyareexcessivelyworn.

hebearingsandoil seals.Cleanthoroughlyand

ces,andcagesto seethattheyarein good

psaresecure.Alsoexamineto seeifthe

whichthebearingsareassembledareingood

led,lubricatethewheelbearingsandadjust

koff%turn.

d Play,Seal,Vent,andAlinement).If

t ofline,measurethedistancefromfront

faxlespring padoneachside.Thisdistance

on eachside.Inspecttoseethat theaxle

onandnotleaking:Examinepinionshaftfor

alforleaks.Cleanthe axlehousingvent

(Joints andAlinement,SealsandFlanges).

,correctandsecureassemblyandmountings;

entandexcessivewear;slipjointshould be

,andwelllubricated;andsealsofU-joints

akexcessively.

semblyandcompanionflangeboltssecurely.

specttosee thattheyarein goodcondition

dconnected.Ifthemountingboltsareloose,

movealloilorgrease fromrubbermountings.

s hardorcracked.

tandPawl,Linkage,DrumandLining).

rakeratchetand pawlandlinkagearein

e;thatbrakedrumis notscoredoroily;and

soaked,norwornthin.

ebetweenthebrakedrumandliningto 0.060inch.

avel,Linkage,andReturnSpring).Ex-

alfreetravelissatisfactory,1to Ij^inch,that


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tedandthat clutchoperatinglinkageisin

ndnotexcessivelyworn.Seethatreturnspring

ension.

eetravel"accordingtospecifications,1to

epedaltravelat theendofthestop shouldbe

hebrakelinkagefordamageandexcessive

gis intactandhassufficienttension.

er(Vent,FluidLevel,Leaks,andSwitch).

re ingoodconditionandsecure;thatthe

ndwhetherthere areanyindicationsoffluid

derreservoirtothe correctlevel.Allow

expansion.Cleanvent.

rovac(Linkage,AirCleanerHoge,and

seethattheyare ingoodcondition,securely

andthattheoperatingandcontrollinkage

rbrakefluid isleakingfromtheslavecylinder.

erelement.

nsertafewdropsof lightoilintopower

ting,Seals,PowerTake-Off,andLinkage).

forgoodcondition,oilleaksfromsealsand

nkageisin goodcondition,properlycon-

onand powertake-offmountingandexternal

rewssecurely.

,Linkage,SealsandVent).Inspecttransfer

dsecurityofmountings,andsealsfor leaks.

s clean,andtightenmountingsandexternal

ecurely.

r properadjustment(shouldhaveJ inch

s.Inspectin thesamemannerasitem62.

d companionflangeboltssecurely.

d Play,Seals,Vents,andAlinement).

ntitemsin thesamemannerasforitem 61.

eaves,U-Bolts,Hangers,.andShackles).

re ingoodcondition,correctlyassembled,

pringshaveexcessivesag.TightenU-bolts

rsandLinks.Examineshockabsorberbodies

n,securityandfluid leaks.

rberbodieswith specifiedfluid.Workthearm

.Repeatthis operationuntilallairis expelled

sconnectthelinkandchecktoseethat the

actingshockabsorbershouldhaveresistance

ngs.Checktosee thatallmountingbrackets

tightensecurely.Thecabmountingbracket

enedcautiousl

tm 9-815 fwd har-1

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