Tm 9-820 TRUCK TRACTOR FEDERAL 4- TO 5-TON

7/28/2019 Tm 9-820 TRUCK TRACTOR FEDERAL 4- TO 5-TON

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ICALMAN

1944

Publ

icDomain,Google-digitized

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use#pd-google


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NICALMANUAL

ARCH1944

ntiniOffI

PublicDomain,Google-digitized

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ERATINGINSTRUCTIONS

data

tion

on-

main-

age

STRUCTIONS

rds.1946

2146-51

ve

uip-

e,and

a-


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NTENANCE

ms..

s-

rsal

em.

ngs,

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ystem

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RUCTIONS

publishedforthe informationand

spersonnelchargedwiththe operation,

epairofthismateriel.

onofFederal,4-to5-ton,4x4 tractor

stechnicalinformationrequiredforthe

reofthemateriel.Themanualis divided

ctionI throughsectionVII,givesoperating

tionVIIIthroughsectionXXXV,gives

ructionstousingarmpersonnelchargedwith

maintenanceworkwithintheirjurisdiction.

atureoftherepair,modifications,or

copeorfacilitiesof theunit,theresponsi-

ldbeinformedsothattrained personnel

pmentmaybeprovided,or properin-

LATEDDATA

d2).

to5-ton,4x4 tractortruckisacab-

pevehicle.ItispoweredbyaHercules,

wheeldrivesystemofpowertransmission

heeldrivewhennecessary,througha

case.Thetruckhasdualrearwheelsand

osparetiresat rearofcab.Thefrontof

olid-barbumpersurmountedwitha

protectiveradiatorbrushguard.Midway

wheelsand outsidetheframeontheleft

gallonfueltank(fig. 2).Thebattery

1)arelocatedin asimilarpositiononthe

ructionswiththemateriel,thisTechnicalManualhas

eofcompletetechnicalreview.Anyerrorsoromissions

es,or,ifextensive,byan earlyrevision.


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RTRUCK(FEDERAL)

RightFrontView

R

LeftRearView


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LATEDDATA

pedwithtwotypesof cabs.Somehave

haveclosedcabs.

erFederalMotorCo

ber94X43C

d).,2025/sin.

95V2in.

9in.

frontwheelsdriving:

ntwheelsdriving:

7ft


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RTRUCK(FEDERAL)

n4thgear)450 Ib

nespeed2,400rpm

tanegasoline)62V2gal

OPERATION

NTROLS.

ver(fig.3).Thepropellershaft

erwhichcomesthroughthefloorboardto

r'sseat.Itis primarilyaparkingbrakebut

encyasastoppingbrake.

shiftLever(fig.3).Thislever

oorboardopeningat therightofthe driver's

othe rightofthepropellershaft brake

ears inthemaintransmission.Ithas

onereverseposition.

er(fig.3).Thetransfer caseshift

helargefloor boardopeningandislocated

othemaintransmissiongearshiftlever.

w,andaneutral positionandcontrolsthe

er(fig.3).Thefrontaxle declutch

chcomesthroughthelargefloorboard

tandadjacenttothetransfercase shift

efrontaxle drive.Thereisan"IN"and


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OPERATION

LIARYFUEL

RE

AGE

trols

DRIVEWHEN

DSURFACEROADS.

ctionPlate


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RTRUCK(FEDERAL)

clutchpedalis thefootpedal

t theleftandadjacenttothe steering

MAL"positionitengagestheclutch.

itdisengagestheclutch.

3).Theservicebrakeis usedto

ck.Itislocatedonthe floorboardatthe

eering column.Inits"NORMAL"position

ushingthepedalforwardappliesthe brakes.

.3).Thefoot dimmerswitchis

ghtbeamswhenmeetingoncomingvehicles

ghtsafterpassing.Theswitchisoperated

hichprotrudesupwardfromthefloor

ewhatforwardfromtheclutchpedal.Press-

e leftfootchangesthepositionofthe head-

uttondownagainreturns thebeamsto

).Thisisthe footoperatedpedal

o therightandbelowthe brakepedal.

trolstheamountofgaspassingthroughthe

positionisaclosedthrottle.Thethrottle

astopass, astheacceleratorisdepressed.

meteristhe upperinstrumentof

umentpaneldirectlyin frontofthesteer-

ntregistersthegeneratoroutputby means

hargeorchargerangeofzero amperesto

3).Theauxiliaryammeteristhe

entpanellocateddirectlybelowthe

ndicatechargeor dischargeoperation

y.

uelgageisaninstrumentwhich

elin thefueltank.Itis operativewhen

don. Thefuelgageislocatedat theleft

anelatthe rightandadjacenttothe

etachometeristhelargeinstrument

strumentpanel,at therightandadjacent

seistoregisterenginespeed inrevolu-

atinghandcoversa rangeofzeroto2,500

ekeycontrollocatedjustbelowthetach-

eredhandwhichregistersthe maximum

cethelastreset.

hisinstrumentindicatesroadspeedin

sbothtrip andtotalmileage.Itis located


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OPERATION

strumentpanelattheright andadjacent

. Theoilpressuregageis locatedon

eright andadjacenttothespeedometer.

heengineoilpressureand coversarange

persquareinch.

3).Thisgageindicatesthe tempera-

gine.Itcoversawmgeof 100 F.to220 F.

mentpaneldirectlybelowtheoilpressure

. Thisgageislocatedonthe center

he rightandadjacenttotheoil pressure

ofair pressureavailableintheservice

gistersfromzeroto 150-poundairpressure

heviscositygageindicatesthecon-

kcaseintermsof thin,ideal,orheavy.It

theinstrumentpanelbelowtheair pressure

ig.5).Thisis afootoperatedswitch

bovethe clutchpedal.Itspurposeisto

ntactbetweenthestoragebatteriesandthe

atorValves(fig.3).Theseconsistof

nasmall subpanelconnectedtotheinstru-

peraturegage.Theleftknobcontrolsthe

r'sseatandtheright knobcontrolsthewiper

nobcounterclockwiseopensthevalve

controlsitsspeed.Turning knobclock-

topsthe wiper.

LightSwitch(fig.3).Thisis apush-

ositions.All lightsareoutin thefirst

ushedall thewayin.Pullingthe knobout

sonly theblackoutlights.Aspringplunger

sition.Releasingplungerand pulling

ositionlights headlights,servicetailand

instrumentpanellightscanbelighted

ullingswitchallthe wayouttothe

heservicestoplightwhenthebrakesare

out.Theswitchknobislocatedatthe

aneldirectlybelowthespeedometer.

hechokecontrolknobis locatedon

mentpanelbelowandtotheright ofthe


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RTRUCK(FEDERAL)

gtheknoboutreducestheamountofair

r,therebymakingarichergasmixture.The

ontrolledby thedistancetheknobis

heignition islocatedinlowercenter

enthetemperatureandviscositygage.Itis

ntrolstheengineelectricalsupplyandmust

iontostartengine.Thelever shouldbe

positionexceptwhenstartingengine,

kinggagereadings.

Thethrottlecontrolknob islocated

trumentpanelbelowthespeedometer.

sh-pull.Pullingincreasestheamountof

theenginespeed.Pushingreducesgasand

sis apush-pulltypecontrolknob

panelbelowthefuel gage.Pullingout

and pushingadvancesthespark.Itis

parkadjustmentforlowgradefuel.

tch(fig.95).Thisis apush-pulltype

roltheinstrumentpanellights.Itcan be

adlightandblackoutlightswitchis in

tion.Theinstrumentlightingswitchis

paneltothe rightoftheheadlightand

witch(fig.3).Thisis apush-pull

atedat theextremeleftoftheinstrument

3).Thisis ahandleveroperated

ngcolumndirectlybelowthesteering

dentlycontrolsthetrailerbrake.

buttonis theroundeddiskinthe

olumn.Depressingthebutton makesthe

peratesthehorn.Releasingorremoving

hecontact.

ANDCONTROLSINOPERATION

ce.Performtheservicesinparagraph

artthe engine.

aketohold vehiclestationary.

ngearshiftleverinneutral position


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OPERATION

CH

99

orSwitchandOilManifoldTeefnstalfed

pletelyouttoprovidea richstarting

old.Ifengineiswarm,useonly partchoke

olaboutViinch.Lessthrottleisneeded

3/4inch.

"ON"position.

ndholddownuntil enginestarts.

orswitchwithleftfoot,until engine

ediately.

arted,pushinthrottlecontrolwhen

hegagesandinstruments.Theoil pres-

poundsorabove.Ifit registersless,stop

ndinvestigate.Theairpressuregagemust

e.A buzzingsound,indicatinginsufficient

ation,willbe hearduntiloperatingpres-

eached.Thevehiclemustnotbemoved

thebuzzersoundswhilethevehicleis being

mediatelyanddeterminecauseoflossof

rmustread"CHARGE."Thetachometer

olutionsperminute.The watertempera-

adual riseto140to 160degrees.The


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OPERATION

osethrottlebyremovingfootfrom

plyservicebrakecarefullyasneededby

pedal.Whenvehicleisabouttostop,dis-

maintransmissiongearshiftleverintoneutral

mpletelystopped,applypropellershaft

servicebrakepedals.

stopengine,turnignitionswitch(fig. 3)

reswitchiscompletelyopen,otherwise

d startingenginewillbedifficult.

Attachtowingcabletotowinghooks.

ever(fig.3)in "OUT"position(fig.4).

verto"HIGH"position(fig. 4).Shift

ftlevertotheNo.5 oroverdriveposition

ttle,andspark controlsintosameposi-

nitionswitchto"ON"position.Release

anddepressclutchpedal.Whena rea-

slowlyreleaseclutch.Assoonasengine

ndadjustcontrols,asnecessary,toprovide

fit isnecessarytostopthevehiclebefore

annotbemadeavailablefromthetowing

rake.Exerciseextremecautioninapply-

e.Checktiresforproperinflationto

36b).Attachtowingcableto towing

eislong enoughtomakeharshusage

onnectairsupply,ifany,ontowingvehicle

ndfrontbumper.Thiswillenableoperator

ervicebrakes.Movethefront axledeclutch

(fig.4). Placemaintransmissiongear-

AL"position(fig.4).Pushpropellershaft

ninto the"OFF"position.Ifairsupply

ellershaftbrakeprovidestheonly possible

usethisbrakeisextremelysevere,utmost

sing it.Ifnecessarytohoistfront end

letobumper.Usecarein wrappingchain

ushingairtubing.Use necessaryblocking

mpertopreventvehiclefromrunninginto

oistrear ottruck,wrapchainaroundthe

nfrontofrear springrearbracket.Be

springand frame,sothatframewillcarry

yblockingbetweentowtruckandrear

gethroughcollision.Straightenfront

eeringwheelto preventturning.


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RTRUCK(FEDERAL)

SUALCONDITIONS

ATION.

utomotiveequipmentatsubzero

oblemsthatdemandspecialprecautionsand

mbothoperationandmaintenanceperson-

ndtotalfunctionalfailureareto beavoided.

ofgasolineis designedtoreducecold

es;thereforethewintergradefuelshould'be

tion.

Gasoline.Dueto condensationof

erwillaccumulateintanks,drums,and

atures,thiswaterwillformicecrystals

dcarburetorjetsunless-thefollowingpre-

filterpaper,oranyothertype of

epassageof water.CAUTION:Gasoline

eratesstaticelectricitythatwillresultin a

ovidedtogroundthe electricity.Always

betweenthecontainerandthetank,to

d.

ble.Themorefuelthereisin thetank,

ir willbefromwhichmoisturecanbe

redalcohol,grade3,tothefueltank

willreducethehazardof iceformation

nersarethoroughlycleanandfreefrom

them.

ormovingacontainer,allowthefuel

tankfromit.

ontainerstighttopreventsnow,ice,

terfromentering.

omdispensingequipmentandfrom

eforeremovingcapto refuelvehicle.

IFFERENTIAL.

t,SAE80,wherespecifiedonfigures

ntLubricationGuide,issuitablefortempera-

onsistenttemperaturebelow0F.isantici-

swhilewarmand refillwithgrade75uni-


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UALCONDITIONS

hissuitable foroperationatalltempera-

universalgearlubricantisnot available,

cant dilutedwiththefuelusedby the

fone partfueltosix partsuniversalgear

utemake-upoilin thesameproportion

cases.

warmedup,engageclutchandmaintain

or5minutes,oruntil gearscanbeengaged.

st)gear, anddrivevehiclefor100yards,

heengine.Thiswillheatgear lubricantsto

erationcanbe expected.

catechassispointswith generalpur-

NG.Drainhousing,ifpossible,or use

uch lubricantaspossible.Refillwithuni-

e75,or,if notavailable,SAE80universal

fuelused intheengine,inthe proportion

sSAE80 universalgearlubricant.Dilute

oportionbeforeit isaddedtothe housing.

anpoints whereengineoilispre-

lightlubricating,preservativeoil

byoneofthefollowingmethods,listed

denclosurewhennotinuse.

raincrankcaseoil whilestillhot.Place

usplace inthecabto indicatecrankcase

rmplaceifpossible;otherwise,heatoil

ine sectionwithtarpaulin.Placefire

3hours beforeengineistobe started.

ertypeblowtorch,andordinarykerosene

TION:Becarefulin applyingflame

efromawarmplaceintosubzero tem-

y.

tingpropellershaftbraketo avoid

elstopreventrollingof vehicle,andkeep

frozenpropellershaft orservicebrakes.

lyforbrokenscrews,boltsor other

ednuts.

gasoline,or withDieselfuelinan

verseveraltimestomixoil anddiluent.

foperation,rediluteoilifvehicle istobe

or3or morehours.Usediluentforboth

ionasfollows:


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SUALCONDITIONS

teraddingantifreezecompound,fill

wthe fillerneck;thenstartandwarmthe

gtemperature.

LUTION.Stoptheengineandcheck

eter,addingantifreezecompoundif

rvice,inspectthecoolantweeklyfor

drainand cleancoolingsystemthor-

onofthe requiredstrength.

stheonlyantifreezematerialauthorized

reezesolutionsbekeptclean.Use

thatarefreefrom dirt,rust,andoil.

meter.Totestahydrometer,useone

totwopartswater.Thissolutionwill

dingof0F.

compoundonpaintedsurfaces.

ANKINGMOTOR.Checkthebrushes,

gs.Seethatthecommutatorsareclean.

whichoccurwhenstartinga coldengine

eenbrushesandcommutators.

andtightenallconnections,especially

urethatno shortcircuitsarepresent.

perfunctioningbynotingquality

horoughly,andcleanorreplacepoints.

y.Incoldweather,slightlypittedpoints

starting.

ndadjustsparkplugsor replace,if

maketheenginefire,reducethegap

atrecommendedfornormaloperation(par.

nitionmoreeffectiveatreduced

ngcarefully.Besurethatthe spark

rretarded.

iesdecreasessharplywithdecreasing

mespracticallynilat-40F.Donottryto

batterywhenithasbeenchilledto tempera-

tteryhasbeenheated,unlessa warm

Seethatthe batteryisalwaysfully

eterreadingbetween1.275and1.300.A

otfreezeat temperatureslikelytobe


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RTRUCK(FEDERAL)

cclimates,butafullydischargedbattery

-f-5F.

atterywhenit hasbeenexposedto

essthebatteryisto bechargedimmediately.

atterynotputon charge,thelayerof

ndfreezebeforeit hasachancetomix

tscarefully.Checkforshortcir-

turearoundsockets.

seethat thesparkplugs,wiring,

entarefreefromice.

Engine.

OTORMECHANISM.Besurethatno

eenleftonthecrankingmotorthrow-out

eordirtisliableto keepthegearsfrom

emtoremainin meshaftertheengine

illruin thecrankingmotorandneces-

okeis necessarytosecuretherich

orcoldweatherstarting.Checkthe

t closesallthewayandotherwisefunc-

ELPUMP.Thecarburetor,whichwill

eatnormaltemperatures,isliablenot to

wtemperatures.Besurethefuelpump

hragm,asthis willpreventthefuelpump

toffuelrequiredto starttheengineat

nningspeedsarereducedtobetween30

ute.

peraturesbelow0F.,donotuseoil

congealandpreventtheeasyflowof

-cleaningsolvent,dry,andreplace.Ice

eair cleanerscreenscancauseanabnor-

nthecarburetorair hornhose,resultingin

eandcleansedimentbowl,strainers,

anksumpdailyto removewateranddirt

bands,particularlyonnewvehicles,

hentheyare verycold.Alwayshavea

uptheseparts,if theybindpriorto

move,thevehicle.Parkingthevehicle

leliminatemostof thebinding.Pre-

derthesecircumstances,toblockthe

ntmovementofthevehicle.


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SUALCONDITIONS

RATURESONMETALS.Inspectthe

resistanceofmetals,orresistanceagainst

edatextremelylowtemperatures.Opera-

zenground causesstrainandjolting

breaking,ornuts jarringloose.

EDisconnecttheoil-lubricatedspeedom-

dwhenoperatingthevehicleattemperatures

cablewilloftenfail toworkproperlyat

ometimeswillbreak,duetotheexcessive

cosityof theoilwithwhichit islubricated.

TION.

esevehiclesinhightemperatures

nceofcoolingunits,lubrication-filtering

nextremelyhightemperatures,water-

georoverflowtanksshouldbe employed.

oflowgearratios wheneverpossible.Make

ervicingofaircleaners,fuelfilter,andoil

movedduringoperationindustyareas.

doilgagesconstantly.Checkandre-

ently.CAUTION:Inspectvehiclefre-

,bolts,orothermetalparts,and forloosened

nance.

mationofscaleandrustincooling

duringoperationinextremelyhightem-

reventivesshouldalwaysbeaddedtothe

eanwater.Avoidtheuseof waterthat

stanceswhichmaycausescaleandrust

oroughlycleanandflushthecooling

lswhenoperatinginextremelyhightem-

PUMP.Inspectfanbeltatregular

ssary(par.78).Waterpump mustbe

dition.

operationofthermostat(par.76).

alibratedtemperaturetopreventoverheat-

Checkhoseconnectionsfrequentlyfor

lof recommendedcoolantandmain-

gradeof lubricatingoilinlubricating

mperaturefrequently,andiftemperature

eandinspectcoolingsystem.Flush


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RTRUCK(FEDERAL)

ry;lookforsandinradiator fins;blowout

ilable.

s,checkoilfilter,carburetor,air

erairfiltereveryfewhours,and serviceas

s,uselubricantssparinglyandclean

elubricating.

edsurfaceswhenmakingrepairs.

sunforlongperiods,becausethis

ssible,placevehicleundercovertoprotect

verinactivevehicleswithtarpaulinifno

e.

eanandfilledwith cleanfresh(not

whenpossible.Noteenginetemperature

uregagefrequently.Stopvehicleimmedi-

inereaches212F.

esfromatmospherebyrenewingpaint

dkeepingafilm oflightengineoilon

surfaces.

hichhavebeenexposedtosalt water

yafilm oflightengineoilto unfinished

onsofstoredvehicles.Removecor-

eswithflintpaper2/0 (frommachined

),andapplyaprotectivecoatingofpaint,

pound.

zones,cellwaterlevelshould be

shedifnecessarywithpuredistilledwater.

waterfittodrink maybeused.However,

thhighmineralcontentwill eventually

ndshouldbeavoided.

tteriesoperatingintorridclimates

trolytethanfortemperateclimates.In-

electrolyteshouldbeadjustedto around

hargedbattery.Thiswillprolongthelife

separators.Underthis conditionbattery

out1.160.Wherefreezingconditionsdo

ngerwithgravitiesfrom1.230to1.075.

atterywill"self-discharge"atagreater

fstandingfor longperiods.Thismustbe

henoperatingintorridzones.If necessary

movebatteryandstore inacoolplace.


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VEMAINTENANCESERVICES

OW,ICE,SAND,ANDFLOOD.

n bothrearwheels,andselectlow

vehiclesteadilywithoutputtingundue

daxles.

s thegeneralhazardencountered

chains,andselecttheproper gearratioto

withoutimposingunduestrainonengine

ccurs,turnthefrontwheels,in thesame

s skidding.Deceleratetheengine,and

yuntilvehicleisunder control.Proceed

insassoonastheiruse isnolonger

ewhendrivinginsand isto* avoidthe

rivingwheels.If possible,layanimpro-

rushin ordertopreventthewheels

loosefooting.Donot letthemotor

ardseveraltimesifnecessary,untila

depthof thisvehicle,anddonot

educethevehiclespeedto4 milesper

tion.Exercisecaretoavoidwaterdamage

stems.Lubricatedpartswhichhavebeen

rmustbeservicedat earliestopportunity.

wmud,snow,oriceto cakeonwheels,

nuckles,andsteeringarms,ortogather

ve,oil filter,orairfilter openings.Inspect

eoffradiator core,fan,andfanbelts.

moistureoffallelectricalconnections.

nganddestroyingdangerouschemi-

henoperatinginaffectedareasisknownas

overedbyinstructionscontainedinFM


ficiencyitisnecessarythatthevehicle

edatintervalseachdayitis operatedand

ediscoveredandcorrectedbeforethey


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RTRUCK(FEDERAL)

failure.Certainscheduledmaintenance

atthesedesignatedintervals.Theservices

ethoseperformedbydriverorcrewBefore-

on,At-halt,After-operationandweekly.

ntenanceservicesarelistedonthebackof

eventiveMaintenanceServiceRecord"

vehiclesofall typesandmodels.Items

es,butnotlistedonW.D.Form No.48,are

uresundertheitemstowhichtheyare

dontheform thatdonotpertainto

minatedfromtheproceduresaswritten

ganizationmustthoroughlyschooleach

aintenanceproceduressetforthinmanuals

ecificallyonW.D.Form48or not

D.FormNo.48thatapplyto thisvehicle

alto providespecificproceduresforaccom-

nsandservices.Theseservicesarear-

tionandconservethetimeofthe driverand

ame numericalorderasshownonW.D.

bers,however,areidenticalwiththose

ofeachitemappliesalso toanysup-

ction,andgenerallyincludesachecktosee

odcondition,correctlyassembled,secure,or

dcondition"isusuallyan external

minewhetheri:heunitis damagedbeyond

Theterm"goodcondition"isexplained

otbentor twisted,notchafedorburned,

bareor frayed,notdentedorcollapsed,

toseethatit is"correctlyassembled"

linspectionto seeifitis initsnormal

vehicle.

ittodetermineifit is"secure"isusually

ation,awrench,hand-feel,orapry-bar

aninspectionshouldincludeanybrackets,

ckingwires,orcotterpinsusedin assembly.

beunderstoodtomeanworncloseto,

its,andlikelytoresultin afailureifnot

cheduledinspection.

ctoryoperatingcharacteristicsbeyond

o correctmustbereportedattheearliest

tedindividualinauthority.


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SERVICE.

eisdesignedprimarilyasa checktosee

en damaged,tamperedwith,orsabotaged

Servicewasperformed.Variouscombat

eredthevehicleunsafeforoperationand

o determinewhetherornotthevehicle

anymissiontowhichit isassigned.This

yomitted,evenin extremetacticalsitua-

erationServiceconsistsofinspecting

ngtotheproceduredescribed,andcorrect-

ncies.Uponcompletionoftheservice,

promptlytothe designatedindividualin

DDAMAGE.Lookforanyinjuryto

equipment,causedbytamperingorsabotage,

hellfire sinceparking.Lookinengine

eofaboveconditions,andforloosenedor

riesordrivebelts,loosefuel,oilor coolant

trollinkage.

SHER.Seethatit issecurelymounted

kforevidenceofopenedoperatingvalve

IL,ANDCOOLANTSUPPLY.Check

ckcrankcaseoillevelon dipstick.

essaryaddfueltocompletemissionor

cheduledfuelingpoint.Addengineoil

ring tocorrectlevel.NOTE:Anyappre-

After-operationServiceshouldbeinvesti-

edorreported.Duringfreezingweather

sinuse,if anyappreciableadditionofwater

eshouldbetestedby secondechelonand

resparefuel, oil,andwatercansarefull

ANDDRIVES.Examineunits,suchas

ankingmotor,aircompressor,fan,andair

mageorleaks.Besuredrivebelts arein

justmentissatisfactory.Beltsshould

ressuredeflection.

NKS.Checktheair-brakereservoir

secureandundamaged;andthatallair line

obesurethatwater(condensation)has

ksandthat petcocksareclosed.

AL.Inspectgroundandundervehicle

tmentforindicationsoffuel,engineoil,


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RTRUCK(FEDERAL)

Payparticularattentiontofuel tanks

ilfilters,radiator,waterpump,waterlines,

earcases.Traceanyleaksfoundto their

ortthem.

UP.Startengineandnote anyten-

g.Observeactionofcrankingmotor

tecrankingspeed,andengagesand dis-

noisewheninoperation.Sethandthrottle

0revolutionsperminute,andduring

owingBefore-operationServices.NOTE:

ntin30seconds,stopengine andinvestigate.

neis beingstarted,checkoperation

sup,resetchokeasrequired forengine

eventoverchokingandoildilution.

rmalengineoperatingspeed should

mmetershouldshowpositive(+)

dle,and atslowerspeedswithlightson

de."B"ammeterindicatesthatsecond

argingor discharging.Highcharge

untilgeneratorrestorestobatteries cur-

ne.

age.Readingshouldincreasegradu-

dtonormaloperatingrange140 F.to

mperature200 F.NOTE:Donotmove

reachesminimumoperatingrange,135 F.

inehasreachedoperatingtempera-

ideal"range.

ntershouldindicateactualengine

nygiventime engineisrunning.Red

sathighestenginerevolutionsper minute

exceed2,300revolutionsperminute.

eshouldregister 60poundsbefore

ssureindicator"buzzer"shouldsoundat

andcut-outabove60pounds.Maximum

ounds.

e thatgageregisterstheapproximate

narilytankwill befilledafteroperation

ull."

WINDSHIELDWIPERS.Iftacticalsitua-

properoperationandtone.Testwipersto

observewhetherthebladescontactglass

oughfullstroke.Inspectfor damage.

EAR-VISIONMIRROR.Cleanallglass


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mrearvisionmirror properlyandsee

TS)ANDREFLECTORS.Seethatall

orsareclean.Examinethemforlooseness

tionpermits,openandcloseswitchesand

operly.Includestopand blackoutlights.

FLANGENUTS.Seethatall wheel

nutsarepresentand secure.

ure65pounds (maximum)cool

ndremoveanyimbeddedobjectsfrom

enduals.

DSUSPENSIONS.Inspectspringsand

ttheyare secureandnotdamaged,and

ntingnutsand screwsaretight.Examine

NKAGE.Inspectgearcaseandall rods

amage,orexcessivelubricantleaks.

DBUMPERS.Inspectforloosenessor

NNECTIONS.Inspectforloosenessor

obesureit operatesfreelyandlocks

ARPAULIN.Inspectcabandtoptar-

tdoorsand latchesoperateproperly,and

ecoverare secure.

NATOR.Besureit ispresent,fully

EQUIPMENT.Besureallitemsare

properlymountedorstowed.

RATION.Beforevehicleisputin

sreachedoperatingtemperatureandidles

ecelerateandlistenfor anyunusualvi-

unsatisfactoryoperatingcharacteristics

ke.

RMITANDFORM26.Drivermusthave

person.ChecktoseethatAccident

anual,andlubricationguidearepresent

perlystowed.

ERATIONCHECK.TheDuring-operation

sstartimmediatelyafterthevehicleisput

ERVICE.

on,listenforanysoundssuchas rat-

umsthatmayindicatetrouble.Lookfor

olingsystemandsmokefromany part


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RTRUCK(FEDERAL)

lerttodetectanyodorof overheated

asgenerator,brakesorclutch,fuelvapor

,exhaustgasorothersignsof trouble.

ed,gears shifted,orvehicleturnedcon-

eanyunsatisfactoryorunusualperformance.

nstantly.Noticepromptlyanyunusual

maysignifypossibletroubleinsystemto

es.

erationServicesconsistofobserving

ngtotheproceduresfollowingeachitem,

cationsofserioustrouble.Noticeminor

edorreportedatearliestopportunity,usually

NDBRAKES.Footbrakesshouldstop

ctivelywithnormalpedalpressure,andre-

ediatelyfootpressureisreleased.If

d,testhandoperatedairapplicationvalve

eactionontrailer issatisfactory.Hand

onareasonableincline,leavingl/2 ratchet

dlocksecurelyin appliedposition.

chshouldnotgrab,chatter,orsqueal

pwhenfullyengagedunderload.Pedal

avelbeforemeetingresistance.

N.Gearsshouldshiftsmoothlyand

of meshduringoperation.

ansferunitrangegearsanddeclutch-

fteasilyandquietlyand notcreepoutof

ONTROLS.Thedrivermustbeon the

ngineperformancesuchaslackofusual

,unusualnoiseorvibration,indications

veexhaustsmoke.Observeifenginere-

controlsappeartobein properadjust-

ylooseorbinding.

S.Observereadingsofallinstruments

ontobesureunits towhichtheyapplyare

dingshouldshownormaloperating

s.

rationwithalllampsandaccessories

tershouldindicatea postive(+) chargeat

ychargedbatteriesandregulator unitcut

mmetershouldalsoshow positive(+)

eorreportexcessivenegative()readings.

age.Readingshouldincreasegradu-

maloperatingtemperature,160 F.


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hicleuntilenginetemperaturehas

msafetemperature200 F.

erationviscometerpointershould

inrangereadingmayindicateoil di-

gmayindicateoilcontaminationsuchas

Abnormalreadingsshouldbe investi-

mumreadingshouldbe105 pounds,

ntershouldregisteractualengine

dredpointershould notexceedmaximum

volutionsperminute.

shouldindicateactualvehiclespeed

stertotalaccumulatingmileage.

ouldcontinueto registerapproxi-

k.

AR.Noteanyindicationoflooseness

e,wandering,shimmy,wheeltramp,orun-

R.Beonalert foranyunusualop-

noisefromwheels,axles,orsuspensionunits

essordamage,orunderinflatedtires.

ynoiseor abnormalconditionthat

osetoptarpaulinorcurtains,looseor

e,floororinspectionplatesormounted

regardedasminimummaintenancepro-

formedunderalltacticalconditionseven

aintenanceservicesmustbeslightedor

vicesconsistofinvestigatinganyde-

eration,inspectingitemslistedbelow

esfollowingtheitems,andcorrectingany

enciesnotcorrectedshouldbereported

dindividualinauthority.

DWATERSUPPLY.Checkthefuel

quatetooperatethevehicleto thenext

eling,usesafetyprecautionsforground-

lowspaceforexpansioninfiller neck.

pen,pressurecapvalvesmustbe freeand

urely.Checkthecrankcaseoilleveland,

per level.Removeradiatorfillercapbeing

yifapressurecapis usedandcheckcoolant

vel,and replenishasnecessary.Donot


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RTRUCK(FEDERAL)

esufficientspaceforexpansion.Ifengine

ineisrunningata fastidle.

ES:HUBS,BRAKEDRUMS,TRANSFER,

ES.Placehandcautiouslyoneachbrake

ifitis abnormallyhot.Inspecttransfer

xlehousingsforoverheatingandnoteany

ANSFERVENTS.Wipecleanand

orclogging.Ventsmustbekept open.

HAFTS.Inspectalldriveshaftsand

mage,andexcessivelubricantleaks.Re-

woundaroundshaftsorjoints.

SUSPENSIONS.Inspectforbrokenor

agedorlooseU-bolts,eyebolts,shackles,

orberbodiesandlinkage,or excessive

KAGE.Examineallsteeringcontrol

kagefrictionaljointsforloosenessordamage.

onditionnotedduringoperation.

LANGENUTS.Seethatall wheel

nutsarepresentand secure.

all tiresforunderinflationor dam-

objectsintreadsorcarcassesandfrom

pareisinflated andsecureincarrier.

ERAL.Lookundervehicleandwithin

ndicationoffuel,oilorcoolantleaks.Trace

nd correctorreportthem.

ESANDBELTS.Examineallaccessible

age.Besure generator,fan,andcom-

s satisfactory.Ifradionoisecontributable

was observed,examineallradionoise

osenessanddamage,particularlyresistor-

sanddistributor.See paragraphs181-185

RS.Ifoperatingunderextremelydusty

ctaircleanerandbreathercapto seethat

elivercleanairproperly.Serviceasneces-

DBUMPER.Inspectfrontbumperand

ardsfor loosenessordamage.

NNECTIONS.Inspectallconnections

Besurelockingdevicesaresecure,and

ssupportedsoasnot tochafeonother

ARPAULIN.Inspectfordamage,or

shiftingofcab.


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nallwindshield,mirror,light,and

dinspectfordamage.

DWEEKLYSERVICE.

ngisparticularlyimportantbecauseat

shis vehicletodetectanydeficienciesthat

correctsthoseheispermittedto handle.

,tothedesignatedindividualin authority

on.Ifthisscheduleisperformedthoroughly,

yto rollagainona moment'snotice.The

withafewexceptions,isthen necessary

hicleisinthesameconditionin whichit

oftheAfter-operationService.TheAfter-

everbeentirelyomittedeveninextreme

ybereducedtothebare fundamentalser-

ltServiceifnecessary.

ormingtheAfter-operationServicethe

dconsideranyirregularitiesnoticedduring

eration,During-operation,andAt-haltSer-

nServiceconsistsofinspectingandser-

ThoseitemsoftheAfter-operationServices

risk (* )requireadditionalweeklyservices,

reindicatedinsubparagraph(b)of each

ATION.Testengineforsatisfactory

dle.Accelerateanddecelerateengineand

orbackfire.Listenfor anyunusualnoise

atewornor inadequatelylubricatedparts,

tfuelmixture,orfaultyignition.Noteany

nvestigateandcorrectorreportanyde-

eration.

S.Checkallpertinentinstrumentsto

roperlyandcontinuetoregisterori ndicate

eunitstowhichtheyapply.Stopengine,

ourorfiveminutesif itisat orbeyond

DWATERSUPPLY.Fillfueltanks:

ull.)Checkcrankcaseoilandadd as

ctlevel. Checkcoolantlevelandaddas

ctlevel.NOTE:Donotoverfill fuel

omforexpansion.Infreezingweather

ofcoolantisnecessaryhaveantifreeze

fficienttoprotectcoolingsystemagainst

ntwhileengineis toohot.Fillallspare

supplyhasbeenused.

NDSHIELDWIPERS.Inspecttoseeif


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RTRUCK(FEDERAL)

not damaged.Iftacticalconditionspermit,

onand tone.

EARVISIONMIRROR.Cleanandinspect

ountingsare secure.

S)ANDREFLECTORS.Inspectfor

cticalsituationpermits,testallli ghtsand

ion.Cleanlenses.

ISHER.Inspectforloosenessordam-

guisherhas beeninuseor valves

xchange.

ATOR.Inspectforloosenessor damage

ort forrefillorexchange.

that theyareclean,secure,andnot

hatcellcapsare fingertight.

topof batteries.Ifterminalcon-

ded,cleanthemthoroughlyandapply

e.Tightenterminalboltsif loose.Remove

ofelectrolyte.Addwaterifrequired,

batterywillnotbe damagedduringfreez-

yshouldbesecure,notbulgingorcracked

terycarriershouldbesecure,clean,freeof

ountingsare loose,tightenthemcau-

ethebatterycase.Reportanydefects.

ESANDBELTS.Inspectunitssuchas

ankingmotor,fan,waterpump,compressor,

ndoilfilters, forlooseness,damageor

d~adjustmentofdrivebelts.Shouldhave

suredeflection.Investigateandcorrector

accessoryunitsordrivesnotedduring

LWIRING.Inspectallignitionwiringfor

eoffexcessivegreaseormoisture.Also

ccessiblelow-voltagewiringandconnec-

ageandbe sureallwiringis supported,so

er vehicleparts.Examineallradionoise

graphs181-185,forloosemountingsor

snecessary.

ERANDBREATHERCAPS.

damage.Examineoilin reservoirsfor

edirt.Whenoperatinginsandyor dusty

iceaircleanerandbreathercapasoften

eanerandbreatherreservoirsand

aningsolvent,refillreservoirswithcleanoil


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ureallgasketsseal properlyandthat

secure.

R.

amageandfuelleaks.

mentbowldrainpluganddrainoff

ater.Ifdrainingof fuelpumpsediment

orwater,removeandcleanelementin

TROLS.Examineallengineoperating

ess,damage,excessivewear,andadequate

ngsparesfor damageandexcessive

edforeignmatter,suchasnails,glass,or

rcassesandfrombetweenduals.Check

erpositionof valvestemandpresenceof

ctpressureasneeded 65pounds

ywornorotherwiseunserviceabletires.

owabnormalwearshouldberelocatedto

.Apparentmechanicaldeficienciescausing

tedforattentionby higherechelon.

DSUSPENSIONS.Inspectforlooseness

ngsag,shiftedspringleaves,andshock

gateanynoiseorunusualconditionnoted

NKAGE.Inspectforloosenessordam-

arcaseandfrictionaljointsforexcessive

oflubrication.Investigateanyunusual

dduringoperation.

SHAFTS.Inspectalldriveshaftsand

mageandexcessiveoilleaks.Remove

daroundshaftsorjoints.

RANSFERVENTS.

ngandtransfercaseventsarepresent,

an.Inspectforindicationsoflubricant

sandcleanoutpassages.Reinstall

ERAL.Lookinenginecompartment

ationsoffuel,engineoil, coolant,orgear

VELS.Checkgearoillevelsin dif-

ransmissionandsteeringgearhousing,and

sarefrom loweredgeoffillerholeto


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RTRUCK(FEDERAL)

TANKS.

or loosenessordamage.Openreser-

offall accumulatedcondensate.

mountingsandlineconnections.Clean

reaseoroil.

DBUMPERS.Inspectfrontfendersand

ardsfor loosenessordamage.

NNECTIONS.

rucktractorfifthwheel(ifused) or

nsforlooseness,excessivewearordamage.

ndinggear,ifconnected,andunhitch

urfacesoffifthwheelplate,andkingpin

tthemforwearanddamage,andapplya

se.Rehitchthetrailer,noticingwhetherthe

dwhetherthelatchingmechanismcloses

curely.

ARPAULIN.Inspectcabcarefullyfor

aminetoptarpaulinandside curtainsfor

e,andsee thattheyaresecure.

.

orexternalassemblynutsor screws

ehasindicatedthenecessity.

mountingandaxleflangenutsand

,eyebolts,shacklesandreboundclips;

s;enginemountings,transfercasemountings;

nections,oranyothermountingorassembly

ionorexperienceindicatesarenecessaryon

EASNEEDED.

as shackles,hinges,latches,control

anypointwhereinspectionhasindicated

needed..

ointsofthevehicleindicatedon the

nglubricationonaweeklyor amileage

GINEANDVEHICLE.

oroildrippingsfrominside cab,and

tandexteriorofengine.Wipeoffexcess

vehicle.

whenpossible.Ifnotpossible,wipe

ntorcamouflagepatternforrustor for

auselightreflections.Seethatvehicle

scoveredfortacticalreasons.CAUTION:

er forwashing,caremustbetakentosee

getintowheelbearings,gear casesorbrakes,

ring.


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DEQUIPMENT.

eandtoollists(par.18), toseethatall

temstosee thattheyarein goodcondi-

orstowed.

andequipmentof rustordirt,and

necessarywhenpossible.Seethattools

pand properlyprotectedandthatallitems

owed.NOTE:Whenservicesarecom-

onplatesare replacedsecurely.

ationGuide(fig.6)prescribeslubri-

to5-tontractortruck(Federal).Localized

ratedinfigures7, 8,9,and10.

cedon orisissuedwith eachvehicle

atall times.Intheeventthevehicleis

heusingarmsshall immediatelyrequisi-

eCommandingOfficer,FortWayneOrd-

Mich.

sontheguidearebindingon allechelons

shallbeno deviationsfromtheseinstruc-

edontheguideare fornormalopera-

eseintervalsunderextremeconditions

rlowtemperatures,prolongedperiodsof

erationinsandordust, immersioninwater,

nyoneof whichmayquicklydestroythe

ubricantandrequireservicingin orderto

rdamagetothemateriel.

edinthe"Key"in accordancewiththree

ve+32F.,+32F.to0F.,andbelow0F.

ngegradesoflubricantsby maintaining

ofthevehicleduring theapproachto

arlyobservantwhenstartingtheengine.

ationof thickenedlubricantsandthe

prescribedfor thenextlowertemperature

ecessarytochangegradesof lubricants

esareconsistentlyinthenext higheror

nctioningoccurssoonerduetolubricants

y.


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TRUCK(FEDERAL)

5


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Z

UJ


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RTRUCK(FEDERAL)

E

BERLINK

RAGLINK

L

EL

nts A


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RING

LUGS

INKAGE

AKE

nts B


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RTRUCK(FEDERAL)

DALS,DIS-

ETERADAPTER

nts C


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oints D

ONINSTRUCTIONS.

Eachpieceofmaterielissupplied

tadequatetomaintainthemateriel.Be

ntbothbefore andafteruse.Operate

andinsuchmannerasto insureaproper

t.

glubricationfittings,greasecups,

emreadilyidentifiableonthe vehicle.

rsandthesurroundingsurfacebeforelu-

provided,applynewlubricantuntil

om thevent.Exceptionsarespecifiedin

uide.

ividualUnitsandParts.Thefol-

mentthosenotesontheLubricationGuide

nandserviceofindividualunits andparts.

uide itselfaretothesubparagraphbelow

number.

eapplyinglubricant.Lubricateuntil

mthebearing,unlessotherwisespecified.

spo/nfsafterwashingtruckandtrailer.

ndicatedarefornormalservice.For

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

by%orVi, ormoreifconditionswarrant.

ngsolventorDieselfueloilwillbe

parts.Useofgasolineforthis purposeis

thoroughlydry beforerelubrication.

hecklevelandrefilloilreservoirof


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RTRUCK(FEDERAL)

evel withusedcrankcaseoilorSAE30

ndSAE10-f 32F.to0F.Every1,000

edustconditions,removeandwashall

eoilandoperatedry.Washcrankcaseoil

breatherlocatedonrightrearside ofengine,

twithusedcrankcaseoilor SAE30engine

0+32F.to 0F.Below0F.,use

Every1,000miles,removecompressor

akestrainer.Wash curledhairandreoil

SAE30 engineoilabove+32F.and

ow0F.,uselightshockabsorberfluid

eairstraineratinlet elbowofbrake

thestrainercap.Washstrainer and

ywhenengineishot(B,fig. 8).

ge.Gagereachedthroughinspection

Runengine afewminutesandrecheck

epressuregageindicatesoilis circu-

00miles,removedrainplugin filter

gcabskirtpanelonleft side)todrain

esormoreoftenif filterbecomesclogged,

rrenewingelementrefillcrankcaseto

engineafewminutes,checkcrankcase

"FULL"markongage(SAE30above

0F.;below0F.,referto OFSB6-11).

A,fig. 7;A,fig.9).Weekly,check

oundand, ifnecessary,addlubricantto

elwhencoldortoplug levelwhenhot

sindicatedonguide.Drainonlyafter

seventsclean(doublereductionfront

eforerefilling,pourV2quartof universal

lugopeningsin differentialdrivepinion

clutchingunithousing.

efillHoudeabsorberswithheavyshock

absorberswithlightshockabsorberfluid.

ONTWHEELS)(C,fig.7).Withtruck

spectionpluginlowerside ofuniversal

h fittinginwheelhubto levelofplughole.

Every6,000miles,removestarter,clean

with.6to8drops ofspecialpreservative

9).Every6,000miles,wipedistributor

o.1generalpurposegrease above-(-32F.

dlubricatebreakerarmpivot andwick


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odropsofSAE30 engineoilabove-f32F.;

tpreservativelubricatingoilbelow0F.

WHEEL).Sometypesofearlymodels

s.Keeptheturntable,couplerpinlocking

atedwithNo.1 generalpurposegrease

low+32F.Ifcoveredwithgrit orsand,

ry1,000miles,lubricatethekingpinlock

ove+32F.;SAE10+32F.to 0F.;

ngoilbelow0F.topermiteasyoperation

emovebearingconeassembliesfrom

nside ofhub.Inspectbearingracesand

tjespindleandinside ofhubandhubcap

greaseto amaximumthicknessofYi$inch

bearingconesandgreaseseals.Inspect

LubricatebearingswithNo.2generalpur-

or byhand,kneadinglubricantintoall

"extremecaretoprotectbearingsfrom dirt

bleandreplacewheel.Thelubricantinthe

videlubricationuntilthe nextservice

ubcap.Anyexcessmightresultin

m.

dE,fig.8;C, fig.7;CandD, fig.9;

000miles,lubricatethrottleandspark

hinges,latches,pintlehook,footbrake

,emergencybrakecontrolleverspringand

ckerarmshaftwithSAE30engineoil

2F.to0F.;lightpreservativelubricating

Every1,000miles,applyhydraulic

berlinks(somemodels).CAUTION:Do

O-LUBRICATIONSERVICE.Chassis

gplates,aircompressor.

EDAND/ORLUBRICATEDBYORDNANCE

EL.

ValveStem.Every12,000miles,the

orshouldberemovedandthe uppervalve

dropsof specialpreservativelubricatingoil.

perBearing.Whenthe steeringgearis

ggeartubeupperbearingwillbe cleanedand

erbearinggrease.


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RTRUCK(FEDERAL)

STOWAGEONTHEVEHICLE

IPMENT,ANDSPAREPARTS.

toolbox(fig.11) attachedtotheframe

hetruckjustaheadofrear wheels.A1-

e-plungertypefireextinguisherisstoredon

oseats.Thelists belowareforinformation

rrequisition.Toolsequipmentandspare

ws:

peen,16-oz

wrench

ench

andle

nt,6-in.

.

eend,12-in.

-end,3/a-x~/iQ-in.

-end,%6-x1%-in.

-end,V2-x1%2-in.

-end,s/a-x2%2-in-

-end,3A-xVg-in.

e,auto,type,15-in.

eelbearingnut

elbearingnut

udnut

ndle

rts.

her

acity

c,chassis

ong)

linder(exceptair

single(1pair)

dual(1pair)


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STOWAGEONTHEVEHICLE

HAIN

NTTIRECHAIN

NUTWRENCH

GNUTWRENCH

NTCOMBINATIONPLIERS

8-IN.

USTABLEWRENCH

BALLPEENHAMMER

EAD,15-DEGREEENGINEER'SWRENCH,%7/16-IN.

EAD,15-DEGREEENGINEER'SWRENCH,Vt19/32-IN.

EAD,15-DEGREEENGINEER'SWRENCH,9/1611/16-IN.



RIVERWITHINTEGRALHANDLE

NCHHANDLE

UBRICATINGGUN

RENCHHANDLE

WRENCH

HHANDLE

DLE

ACK

RANKRAPD

GE773*9

Tools


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RTRUCK(FEDERAL)

STRUCTIONS

ECORDS

TASSEMBLYREPLACEMENT

icleissuppliedwithacopyof AGO

esameansof keepingarecordofeach

unitassemblyreplaced.Thisformin-

clenameandU.S.A.RegistrationNumber,

formationpertinenttotheworkaccom-

ntthattheformbeusedas directedand

until vehicleisremovedfromservice.

sonnelperformingmodificationsor

cementsmustrecor4clearlyontheforma

mpletedandmustinitialthe forminthe

eachmodificationiscompleted,record

eage,andMWOnumbenXWhenmajor

ngines,transmissions,transfgfcases,are

hoursand/ormileageandnoSPenc^ature

rrepairsand minorpartsandaccessory

recorded.

onreceiptbyathirdor

vehicleformodificationorrepair,

ordtheMWOnumbersofmodifications

fAGOFormNo.478.

T

reconditionedvehicleisreceivedat

necessaryforsecondechelonpersonnelto

hevehiclewilloperatesatisfactorilywhen

urpose,inspectallaccessories,sub-

ools,andequipmenttoseethattheyarein

ed.Inaddition,theywillperforma run-in

directedin AR850-15,paragraph25,

eduresinparagraph21 below.


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T

es.Deficienciesdisclosedduringthe

illbetreatedasfollows:

eswithinthescopeofthemaintenance

zationbeforethevehicleis placedinservice.

ondthescopeofthemaintenance

zationtoa higherechelonforcorrection.

riousnaturetothe attentionofthe

URES,

eethatportableextinguisherispresent,

properoperation,andmountit securely.

R.Fillfueltank.Checkcrankcaseoil

dasnecessaryto bringtocorrectlevels.

nfueltankand radiator.Duringfreezing

freezeandaddas necessarytoprotect

ezing.CAUTION://thereisatagattached

eelconcerningengineoilincrankcase,fol-

oredrivingthe vehicle.

fuelfilterforleaks,damage,and

nections.Removedrainpluganddrain,

ofwaterordirt ispresent,removeelements

entsindry-cleaningsolvent.Replaceele-

rometerandvoltagetestofbatteries

dedto levelelectrolyteto%inchabove

ainair-brakereservoirtanks.Close

EATHERCAP.Examinecarburetor,air

andcrankcaseventilatorbreathercaptosee

onandsecure.Removeelementfromthese

indry-cleaningsolvent.Applyafilmof

ndfill aircleanerreservoirtobeadlevel

urely,makingsureallgasketsare ingood

rhornconnectionsaretight.

LTS.Seethataccessoriessuchascar-

tor,crankingmotor,distributor,waterpump,

pressoraresecurelymounted.Checkthe

pressorbeltsforgoodconditionand ad-

V2-to3/4-inchfingerpressuredeflection.

Examineallaccessiblewiringandcon-

oodconditionandsecurelyconnected.

s,includingspare,areproperlyinflated

ms areincorrectposition,allvalvecaps


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RTRUCK(FEDERAL)

emoveobjectslodgedintreadsandcar-

sandinspectfordamage.

NUTS.Seethatallwheelmountingand

tand secure.

ER.Examinefendersandbumperfor

ONS.Inspecttowinghooks,trucktractor

for loosenessordamage.

allcaband bodymountingsare

nts,hardware,glass,doorsandwindows,to

condition,secureandoperateproperly.

perlyassembled,ingoodconditionand

etrailer connectingmechanismoperates

rely.Seethattrailerbrakelines andcon-

tionandsecurelyconnectedorsupported.

shieldandwindowliftmechanism,tosee

torily.

acompletelubricationofthevehicle,

ordingtotheinstructionsonthelubrication

eptgearcases,wheelbearings,andotherunits

14).Checkallgearcaseoillevels,and

o correctlevel;changeonlyifconditionof

orifgear oilisnot ofpropergradefor

perature.NOTE:Performitems(15)

tion.

NSIONS.Inspectspringsforsag,broken

clips.Checkshockabsorbersforsecure

Seethatallsteeringarms,rods,and

onditionandsecure;andthatgear caseis

leakingexcessively.

NDUNIVERSALJOINTS.Inspectall

rsaljointstosee iftheyarein goodcondi-

,alined,secure,andnotleakingexcessively.

RVENTS.Seethataxlehousingand

sent,ingoodcondition,andnot clogged.

ketobesureit opensandclosesfully

chokebutton.

artengine,notingifcrankingmotor

anytendencytowardhardstarting.Set

atfastidleduringwarm-up.During

tonsoenginewillrunsmoothly,andto

oildilution.

afterenginestarts,observeifoil

ormaloperatingpressure,hot,isabout


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T

ionsperminute.)Stop engineifpres-

seconds.

etershouldshowslightpositivecharge

rtingengine,untilgeneratorrestoresto

rting."B"ammetershouldshowcharge

ceivingcurrentfromgenerator.

ginetemperatureshouldrisegradually

operatingrange,140F.to 160F.

ouldregister "FULL"iftankhas

neoilatnormaloperatingtemperature,

dealrange.If pointerremainsinheavy

rsludge,.Ifpointergoesto thinrange

ntershouldindicateactualengine

nygiventime.Red pointerindicatesand

onsperminuteattainedandshould not

ernedenginespeed,2,300revolutionsper

ngwarm-upperiodoperateengine

observewhetherornotair-brakepressure

specifiedmaximum(105pounds)and

tsoffairfromcompressor.Withtheengine

edair pressurefromsystembyrepeated

serveifcompressorcutsinat85 pounds.

zzer)shouldsoundatpressuresbelow

meter.Whenvehicleisinmotion,

atevehiclespeed,andodometershould

eage.

Observeifenginerespondsproperlyto

eratewithoutexcessiveloosenessorbinding.

ELDWIPERS.Seethattheseitemsarein

e.Iftacticalsituationpermits,testhornfor

.Seeifwiper armswilloperatethrough

adecontactsglassevenlyandfirmly.

WMIRRORS.Cleanallbodyglassand

senessanddamage.Adjustrearview mir-

REFLECTORS.Cleanlensesandin-

sand damage.Iftacticalsituationpermits,

itchestoseeiflampsrespondproperly.

okundervehicle,andwithinengine

onsoffuel,oil,andcoolantleaks.Trace

rrector reportthem.

ENT.Checktoolsandonvehiclestow-


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50/283

RTRUCK(FEDERAL)

be sureallitemsare present,andseethat

roperlymountedorstowed.

efollowingprocedures(1)to(11)

estof thevehicle.Onvehicleswhichhave

oreinthecourseof deliveryfromthe

nization,reducethelengthof theroad

ecessarytomakeobservationslistedbelow.

ationofthevehicleat speedapproaching

onthecautionplateshouldbeavoided

NDGAGES.Donotmovevehicleuntil

hes135F.Maximumsafeoperatingtem-

eadingsofoilgage,ammeters,temperature

chometer,viscometer,andfuelgagetobe

eproper functionoftheunitstowhichthey

ometerregistersthevehiclespeedand

cumulatingmileage.

AND.Testservicebrakestoseeifthey

thoutsidepull,chatter,orsquealing.Park-

cleona reasonableinclinewith%ratchet

ndapplicationvalvetoseeif itfunctions

tchoperatessmoothlywithoutgrab,

ement,orslippagewhenfullyengaged,

has IVainchfreetravelbeforemeeting

otride clutchpedalatanytime,and

genewclutchseverelyorunnecessarily

kshave becomeproperlywornin.Never

omelessthan 3Ainch.Adjustonlyac-

aragraph59.

RANSFER.Gearshiftmechanismshould

ly,andgearsshouldoperatewithoutun-

utofmesh.Testfrontaxledeclutchingfor

eeringactionforbindingorlooseness,

lltoone side,wander,shimmy,orwheel

acketandwheelaresecure.Paypar-

armtosee thatitis secure.

rtforanyabnormalengineoperating

noise,suchaslackofpullingpoweror

isfiring,stalling,overheating,orexcessive

fenginerespondsproperlytoallcontrols.

overnedspeedof 2,300revolutionsper

nthealertthroughoutroadtest forany

ndattachments,runninggear,suspensions


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NTIVEMAINTENANCE

atelooseness,damage,wear,inadequate

dtires.

ILEINTERVALSFORSERVICES(9)TO

AKS.Withtheairpressureatgoverned

applied,stopengine.Thereshouldnotbe

rewithin1 minute.

utiouslyhand-feeleachbrakedrumand

mperatures.Examinetransmission,trans-

ousingsforindicationsofoverheatingand

atseals,gaskets,orvents.NOTE:Transfer

rmallyhigherthanotherfearcases.

unning,andfuel,engineoil,and cool-

e,lookwithinenginecompartmentand

nsofleaks.

dReports.

atvehicleTechnicalManuals,Lubri-

rmNo.26(DriversReport-accident,Motor

OFormNo.478(MWOandMajorUnit

cord),areinthevehicle,legible,and prop-

registrationnumberandvehiclenomen-

nFormNo.478,fornewvehicles.

etionoftherun-intest,corrector

ted.Reportgeneralconditionsoftheve-

ualinauthority.

NTIVEMAINTENANCE

EVENTIVEMAINTENANCESER

ntenanceinspectionsandservicesarea

functionoftheusing arms,andarethere-

rsofoperatingorganizations.

uencyofthepreventivemaintenance

consideredaminimumrequirementfor

es.Underunusualoperatingconditions,

tures,dustyorsandyterrain,itmay beneces-

intenanceservicesmorefrequently.

CIPATION.Thedriversshouldaccom-

sistthemechanicswhileperiodicsecond

enanceservicesareperformed.Ordinarily

hevehiclefor ascheduledpreventive


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RTRUCK(FEDERAL)

easonablycleancondition;thatis,itshould

mudorgreasetosuchan extentthat

illbeseriouslyhampered.However,the

edorwipedthoroughlyclean,sincecertain

racks,leaks,andlooseorshifted partsor

entifthesurfacesare slightlysoiledordusty.

n thosecontainedinthegeneralpro-

specificproceduresinstep(5)whichfollow,

tperformanceofapreventivemaintenance

fadeficiency,othersectionsofthismanual

ved,ora designatedindividualinauthor-

S.Thesegeneralproceduresarebasic

efollowedwhenperformingtheservices

pecificprocedures.NOTE:Thesecond

ethoroughlytrainedintheseproceduresso

utomatically.

edsubassembliesareinstalledto correct

betakentoseethattheyare clean,correctly

ted,andadjusted.

ricantretainerseals,a coatingofthe

overthesealingsurfaceof thelipofthe

aleatherseal,itshould besoakedin

practicable)foratleast30minutes.Then

orkedcarefullybyhandbeforeinstalling

bescratchedormarred.

ofeachitemappliesalso toanysup-

ction,andusuallyincludesachecktosee

ngoodcondition,correctlyassembled,

rn.Themechanicmustbethoroughly

planationsoftheseterms:

condition"isusuallyan externalvisual

heunit isdamagedbeyondsafeorserv-

odconditionisexplainedfurtherby the

rtwisted,notchafedor burned,notbroken

yed,notdentedor collapsed,nottornorcut

toseethatit is"correctlyassembled"is

nspectiontoseewhetheror notitisin its

ninthevehicle.

todetermineifitis "secure"isusually

ation,awrench,hand-feelorapry-barcheck

pectionshouldincludeanybrackets,lock

gwires,orcotterpinsusedin assembly.

beunderstoodtomeanworncloseto,

its,andlikelytoresultin afailureifnot

cheduledinspection.


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ENTIVEMAINTENANCE

areindicatedby repeatingtheItem

hichshowthe intervalatwhichtheservices

howthat theparts,orassemblies,areto

yservices.Forexample,anitemnumberin

itea TIGHTENprocedure,meansthat

objectmustbeperformed.Thespecial

ryadjustmentsinaccordancewith the

nual,specialbulletins,or othercurrent

vehiclewithdry-cleaningsolventto

dirt,andotherforeignmaterial.Afterthe

min cleanfluidanddrythemthoroughly.

cleanuntilreassembled,andbecertain

yfromrubberor othermaterialthatit

protectivegreasecoatingfromnewparts

llynotagoodlubricant.

applieseitherto lubricationoperations

vehiclelubricationchart,orto itemsthat

butshouldbeperformedinconnectionwith

ns,ifpartshavebeendisassembledfor

sistsofperformingspecialoperations,

rywater,drainingandrefilling unitswith

gthe oilfilterorcartridge.

perationsshouldbeperformedwith

orceonthewrenchhandle) totightenthe

hanicalpractice.Use torque-indicating

onotovertighten,asthismaystrip threads

ningwillalwaysbeunderstoodto include

ck washers,locknuts,andcotterpins

tening.

tdifficultto performthecomplete

proceduresatonetime,theycansometimes

nningto completealloperationswithin

vailabletimeathalts,andin bivouacareas,

arytoassurethatmaintenanceoperations

edbythetactical situation,itemswith

mns,shouldbe givenfirstconsideration.

ventivemaintenanceproceduresthat

oseoutlinedon W.D.AGOFormNo.461,

ntenanceServiceWorkSheetforWheeled

ertainitemsontheworksheet,that do

renotincludedinthe proceduresinthis

mericalsequenceofitemson thework

anualprocedures,butinsomeinstances


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RTRUCK(FEDERAL)

ervationofthemechanic'stimeandeffort

ES.Theproceduresforperformingeach

nthly)and6,000-mile(6-month)mainte-

cribedinthefollowingchart.Eachpage

mnsatitsleftedgecorrespondingtothe

milemaintenancerespectively.Veryoften

cularproceduredoesnotapplyto both

orderto determinewhichprocedureto

mncorrespondingtothemaintenancedue,

berappearsperformtheoperationsin-

ber.

tuationdoesnotpermita

eitems whichrequirelittle,

hicle.Whenaroad testis

referably5milesandnotover

Performthebefore-operation

agraph12.

vernorCut-off,Low-pres-

rm-upperiodoperateengine

observeifair-brakepressure

ospecifiedmaximum(105Ib)

soffair fromcompressor.

gspeed,bleed airpressure

brakeapplicationandobserve

out 85pounds.Low-pressure

oundatpressuresbelow60

opinairpressureexceptfrom

einvestigatedbymaking

sasdescribedinparagraph124.

es.

sureshouldbe 40pounds

onsperminute,10to 15

eed.CAUTION:Stop

olowforsafeengineoperation

rshouldshowapositive

after startingengine,until

eriescurrentusedin starting.


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55/283

NTIVEMAINTENANCE

ionofchargeof batteries

.Withbatteriesfullycharged

mmetermayshowzero or

metershouldshowcharge

ceivingcurrentfromgen-

vestigatedischarge()

ngandlightsand accessories

oilatnormaloperating

ouldremainin"ideal"range.

y"rangeinspectoil fordirt

o"thin"rangeitmayindicate

e.Readingshouldincrease

tonormaloperatingtempera-

TION:Donotmove

eraturehasreached135P.

re200F.

ershouldindicateactual

uteatanygiventime.Red

ainsathighestrevolutionper

dnotexceedrecommended

,300revolutionsperminute.

cleisinmotion,speedom-

vehiclemilesperhour, and

otalaccumulatedmileage.

approximateamountof

oitem2 forspecifications

hieldWipers.Iftacticalsitu-

rproper operationandtone.

andwipersto seeifthey

secure.Testoperationof

wiperblades contactglass

htheirfullrange without

motormountings.Adjust

ctvision.

ng,BrakingEffect,Feel,Side

Travel,HandControl).Op-

eedsduringroad test


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RTRUCK(FEDERAL)

tpedalsufficientlytostop

ceandobservetheireffective-

unusualnoise,orchatter.

ittleeffort,and shouldreturn

eased.Applyhandapplica-

onswithoutbinding.

eonreasonableincline;

bserveifit holdsvehicle

atleast%travel inreserve,

atchthe appliedbrake

Noise,Chatter,Grab,Slip).

IVi inchesbeforemeeting

rdragwhenshiftingintolow

sewhenpedalis depressed

tiveordryreleasebearing.

noteanytenttencyto chatter

gedor slippagewhenfully

reeplaytobecomeless

r(LeverAction,Declutching,

houldmoveintoeachgear

uietly.Testdeclutching

eengagesproperly.Noteany

eloosemountingsornoise

ed,excessivelywornorin-

ts.

Wander,Shimmy,SidePull,

vehicleinmotionmove

directionsand observe

tionofloosenessor binding.

der,shimmy,orpullto one

mnandwheelare ingood

,Power,NoiseandGoverned

peratingcharacteristicsas

oothlywithoutstalling.

knocksandrattlesasthe


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57/283

NTIVEMAINTENANCE

decelerated,andwhileitis

loads.

Operatetheengineatvari-

os,notingifthe vehiclehas

cceleration.Noteanyten-

.Aslight pingduringfast

ntinuedorheavypingmay

avyaccumulationofcarbon.

vehicleinalow gear,

ratortothetoeboardandby

erreading,seeifthevehicle

eed,thegovernedspeedspeci-

bservetachometerreading

edexceedsthespecified2,300

ents,Cab,Wheels).Beon

nynoisethatmayindicate

mentsmountedonvehicle,loose

s,doors,windshieldorhard-

orindicationsofloosewheel

Withtheairpressureatthe

hebrakesapplied,stopthe

ea noticeabledropinpres-

ny pressuredropoccurs

air-brakesystemforleaks by

ms,Hubs,Axles,Transmis-

dcautiouslyonallbrake

ee iftheyareabnormally

,transmissionandtransfer

rheating.

Fuel).'Lookinenginecom-

cleforindicationsofengine

aceanyfoundto their

rtthem.

NS

ely

Axles,Transmission,and

ugsinfrontandrear axles,


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RTRUCK(FEDERAL)

rcaseandchecklubricant

oweredge offillerhole

whencold.Allowsufficient

ebeforecheckinglevels.

t.Ifan oilchangeisdue

nditionoflubricantindicates

drainand refillunitswith

y indicationsofexcessive

r gaskets.

elts,Accessories,Transmis-

oints,AxlesandWheelBear-

observeasfollows:

ories.Accelerateandde-

entarilyandlistenforanyun-

thatmightindicatedamaged,

engineparts,drivebeltsor

olocateandcorrectorreport

eardduringthe roadtest.

ropellerShaftsandJoints,

s.Withthetransmissionin

frontdrivingaxleengaged,

onstant,moderatespeedby

d listenfor-anyunusual

amaged,looseorexcessively

veallpropeller shaftsand

un-out,andforvibrationin the

cateloosenessorunbalance.

ndicatetightbrakesorwheel

cate,correct,orreport any

st

ts.Lookforcracksorin-

compressionleaksaround

kets.CAUTION:Cylinder

nedunlessthere isdefinite

ningisnecessary,usetorque-

htenheadnutsinthe proper

t-poundstension.Besurebond

nce,CoverGaskets).Adjust

yifnoisy.Intakevalveclear-

ot;exhaustvalveclearance,


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59/283

NTIVEMAINTENANCE

arancetoabovespecifica-

prings,seatsand locks,are

yassembledandsecure.In-

rethey areingoodcondition.

ingnewgasketsifnecessary.

wn,Carrier,RecordGravity

erycaseforcracksandleaks.

ctcables,terminals,bolts,

wnsforgoodcondition.Test

eandrecordonW.D.AGO

vityreadingsbelow1.225

rechargedorreplaced.Elec-

vetopof platesandmayex-

getestaccordingtoinstruc-

hichaccompanytestinstru-

nW.D.AGOFormNo.461.

emorethan 30percent

stbeabove1.225tomake

levelbyaddingdistilled

ebatteryandcarrier.Re-

eanbatterycableterminals,

dbatteryposts andgrease

viceability.Tightenter-

refullytoavoiddamageto

ocoverbondstraps.

ts).Withoutremovalwipe

latorsfordamageor indica-

s.

minetoseeif theyarein

ularattentiontobroken

bonoroxidedeposits,andto

eanplugsthoroughly.If

e,installnew orrecondir

otinstallplugs untilitem

etpluggaps to0.025inchby

ectrodes.

ompressionwithallspark

sionpressureatcranking

pounds.Thereshouldbe

PublicDomain,

Google-d

igitized

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_use#pd-g

oogle


60/283

RTRUCK(FEDERAL)

ariationbetweencylinders.

suresonspaceprovidedonback

1.

vel).Withengineidling

ecovers,timing-gearcover,and

.Stopengineand afteroil

e,checktoseeifit isupto

geisdue,orconditionofoil

aincrankcaseandrefillto

ecifiedoil.NOTE:Do not

m23 hasbeenperformed.

ctfiltersand externalengine

goodcondition,secure,and

bodydrainplugsanddrain

rcartridgeandcheckcon-

sdue,or conditionindicates

hnewcartridgebeingsure

hten coversanddrainplugs

ntings,Hose,CapandGas-

verflowPipe).Inspectall

ey areingoodcondition,

esureoverflowpipeis not

neconditionofcoolanttosee

atedthatcoolingsystemshould

ecessary,proceedonly

tivescoveringproperpro-

dcleaner,neutralizer,andin-

nsects,dirtor greaseue-

esandinspectfor bentcooling

suitablyshapedpieceof

ostraightenfins. Ifanti-

tectivevalueandrecordin

worksheetFormNo.461.

alllooseradiatormount-

ndhoseclampsandbondstraps.

ectpumptosee ifitis in

dnotleaking.Examineshaft

oseness.Inspectfantosee

dthatbladesand hubare

andexaminefanforhubor

PublicDomain,

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igitized

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oogle


61/283

NTIVEMAINTENANCE

beltslooseuntiladjustment

waterpumpandfanas-

s.

witch.Inspectgenerator,

ngmotorswitchtoseeifthey

relymounted,andifwiring

secure.Seethatgenerator

ureandnot damaged.

ankingmotorinspection

mutatorsandbrushestoseeif

and clean;ifbrushesarefree

sufficientspringtensionto

twithcommutators;andif

esecureandnotchafing.

torendofgeneratorand

pressedair.Ifcommutators

0flintpaper(do notuse

suitablesizedpieceof wood

crankingmotormounting

Valve,Governor,Lines).

ortoseethat itisin good

withitsdrivepulleys,and

alveforsatisfactoryvalve

rnorappearstobein good

the compressorwater,oil,

compartmentareingood

thatoiland waterlinesdonot

rairstrainerin dry-clean-

a thinfilmofengineoil to

yafewdropsofengineoil

umpin.

eneor dry-cleaningsolvent

ernor.

rance0.010inchto0.015


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62/283

RTRUCK(FEDERAL)

aminealldrivebelts for

ion,excessivewear,anddeteri-

lleysandhubs toseeifthey

ecurelymounted.

drivebeltshavel/2- to3A-

ction.

apter.Seeiftheyarein good

mbled,andsecure.Inspectthe

s,andconnectionforindica-

ints,Shaft,AdvanceUnits).

yandexternalattachmentare

re.Examineotherpartsas

eandirtfromcapand re-

ndbreakerplatetosee if

secureandserviceablyclean.

cracksincapandrotor,

connections,andtoburned

Seethat pointsarewell

0inchwhenwide open.

rty,removeassembly,clean

withcompressedairand

erylightly.Whencleaning

oncup,cleanthem,reoiland

ributor.Ifbreakerpointsare

n unserviceabledegree,re-

nserifpointsareburnedasthis

eaningpointsusefine file

eemery)and blowout

r.

eelfor excessivewearin

allrotoronshaftandtest

gerforcefornormalrangeof

mechanism.Noteifitwill

henreleasedwithouthang

catecamsurfaces,breaker

ngtolubricationguidein-


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63/283

NTIVEMAINTENANCE

apsto0.020 inch.

l,ignitionwiringincluding

eif theyareingoodcondi-

ectedandproperlysupported.

-suppressorsonsparkplug

and coilfilterunitarein

lyconnected.Inspectalllow

mpartmentinalike manner.

spectforlooseness,damage

s.Examineforevidenceof

yindicatedbycarbonstreaks.

allmanifoldassemblyand

retoraircleanertoseeif

urelymountedandconnected

eservoirandelement,clean

y,fillreservoirtoproper level

assemble.Besure gaskets

dstraps,andalljointsand

nkcasebreathercaptoseeif

ureandnotleaking.Remove

washcleanindry-cleaning

hfreshengineoil andreas-

tle,LinkageandGovernor).

ndition,correctlyassembled,

tcarburetordoesnotleak;

dingchokeandthrottleshaft,

hokevalveopensfullywhen

dposition;ifthrottlevalve

eratorisfullydepressed;

ureandproperlysealed.

inefilterto seeifitis in

mountedandconnectedand

ndremovefiltersediment

eanin dry-cleaningsolvent

beingsuregasketsareinplace.


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64/283

RTRUCK(FEDERAL)

notbecleanedbywashing

eelementtoclean).Turn

kforleaks.

pectpumptoseeif itisin

mountedandnotleaking.Re-

creenandwashindry-clean-

tis inplaceandservice-

ed.

ure sideoffuelpumpand

item39seethatpressure is

oundsminimum,33/4pounds

eed).Starttheengineob-

crankingmotoris satisfactory,

sandoperatesproperlywith-

sadequatecrankingspeed;

adily.Also,assoonasengine

ssuregageand ammeterin-

dWater).Withengine

ofoil,fuel andcoolingsystems

tosourceand corrector

.Withenginerunningand

ted,observeifignitiontim-

etherautomaticcontrols

neisacceleratedgradually.

pecificationsinparagraph

est.Inspectasfollows:

mgagetointakemanifold,

idlespeedbymeansof

enadjustthe idle-mixture

uumgageindicatesasteady

elatteradjustmentsaremade

besaved.

ginerunningatnormal

eshouldreadabout18to 21

besteady.Abadly fluctuating

nchesmayindicatea defec-


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65/283

NTIVEMAINTENANCE

orvalve.Anextremelylow

kinintake manifoldorgas-

erateenginequickly.If

lstodroptoapproximately2

d,andthen failstorecoilto

tleisclosed,itmaybe an

orpistonring sealing,or

buretor,aircleaner,orex-

ngsapplytosealevel.

ya1-inchdropfor each

ons,Voltage,Current,and

runitandradiosuppression

goodcondition,securely

ndclean.

ge-circuittesterandob-

currentregulator,andcut-

-putproperly.Followinstruc-

thosewhichaccompanytest

tshowsfaultyoperation.

bemadeonlyafterregu-

maloperatingtemperature.

ection,Line).Inspecttire

ervetanktoseethatit isin

Besurecapis presentand

n.Notewhethervalveturns

elyworn.Examineairhose

kfordamageorclogging.

temforproperfunctionwhen

msandCaps,Condition,

eCarrier).Inspectasfollows:

bserveifallvalvestems

correctposition,andifall

installedsecurely.Donot

sforcuts,bruises,breaks,

eddedglass,nails,andstones.

ar,watchingforanysign of

redges,andone-sidedwear.

enterof tread(orotherun-


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RTRUCK(FEDERAL)

hangeforneworretreaded

cienciescausingsuchcon-

edandcorrectedorreported.

hirregular wearshouldbe

Fronttires,wornirregularly,

heelpositions.

sandnondirectionaltires

samevehicle.Directional

be mountedsothatthe"V"

whenviewedfromthe

lfront wheelswillor-

t"V"of chevronswillpoint

tofvehicle.

rlyinflated,inspectthem

daccordingtoover-allcircum-

hetherspare-tirecarriers

ecure.

ckringsorflangesshould

cure.

rimflangeor lugnuts

nflatedto65 pounds

mferenceofalltires including

ountedon dualsorondriv-

havedifferencesinover-all

he3/4-inchlimitsspecifiedin

etins.Mountalldualtires

e.Thevalvestemoninner

dthe valvestemonouter

shouldbe oppositeeachother.

roperlyandmountedfor

eelsatintervalsnotexceed-

imeto dothisisduring

es.Afterperformingthetire-

einstallwheelsuntilwheel-

pleted.

ports,Cams,andShafts).In-

s:Removerearwheels.

ntenanceseveralwheelhear-


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67/283

NTIVEMAINTENANCE

52aregroup servicesand

derforeconomyoftime and

ndirtandgrease from

hields)keepingdry-cleaning

Examinedrumsandsup-

oodcondition,securely

excessivelywornorscored.

msandshafts,wherethey

worn:ifcamshaftsoperatefree

ollarsareworn.

pportcapscrewsandhub

s,Anchors,Springs).Ex-

ectionholestoseeif theyare

ontactdrumswithinnext1,000

ehasbeenoperatedin deep

emoverightrear wheeland

e.Ifthislining mustbere-

,checktheirbrakesandservice'

oclean,lubricateandadjustall

sdescribedinitem52,below,

normethodifnecessary.

nspectliningstosee ifthey

lysecuredtobrake shoes,in

hdrums,freeofdirtor lubri-

worn.Alsoseeifshoes arein

ecuredtoanchors,guidesand

springshavesufficienttension

releasedposition.Thickness

ntsshouldbeenoughforat

ebeforerivetheads arelikely

ease fromliningswith

ressedair.

elateditemsto60in-

ustshoesbyminormethod.If

alled,adjustbymajor method

7h.Adjustslackadjusters


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RTRUCK(FEDERAL)

velisat minimumasde-

.

eals,DriveFlangesandNuts).

ows:

seeifthey areingood

kforloosenessofwheel

olvewheelsandlistenforevi-

earings.Inspectaround

sforlubricantleaks.

oteif theyareingood

ghtenedsecurely.

heelbearingsandoilseals.

eaningsolventandexamine

seeif theyareingoodcon-

estheycontactareingood

y excessivewear.

nalloftherelateditems

eelbearingsaretobere-

saccordingtolubrication

.Coatthe cupsorouter

sealswith lubricantsand

ersealsif necessary.CAU-

ecavityin wheelhubs

withlubricant.Todosowill

als.

heelbearings,reassemble

ntoplaceand adjustwheel

ingtoparagraph135b.After

edandadjustmentsecurely

eneitherloosenorso tight

ports,CamsandShafts,Hose,

ndSeals,SlackAdjusters).

bers,pushrodsandseals,and

y areingoodcondition,cor-

ure.

nspectandserviceas


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NTIVEMAINTENANCE

nandinspectinsame

nsamemannerasin

s,Anchors,Springs).Inspect

m49.

ethodifnecessary.

nspectshoes,linings,

memanneras initem49at

nerasinltem49.

nnerasin item49after

to60inclusivearecompleted.

Bearings,Seals).Inspectto

ein goodcondition.Look

undsteeringarms.Seeif

ndsealflangesare ingood

movelubricationplugand

nttoseeif itappearstobe

velocityU-jointassembly.

eaningsolventwithoutdis-

ctpartstoseeif theyarein

cessivelyworn.Payparticular

rs,ballsandraces,axlesplines,

orbushings.

newlubricantwallinto

ntilitfillsall spacebetween

eassemblesteeringknuckle

unserviceablelubricantre-

ets.

ontoreinstallshimsand

tionfromwhichthey were

oinsurecorrectpivotbearing

ent.

es,U-Bolts,Hangers,and

n goodcondition,correctly

pringclipsandboltsshouldbe

uldnotbe shiftedoutoftheir


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RTRUCK(FEDERAL)

beanindicationofa sheared

onofbothsprings isnormal

me.Testhangersandbolts

nsofapry bar.

U-boltssecurelyand

Drag-link,Seals,andBoots,

nandWheel).Seeifthese

,correctlyandsecurelyas-

teeringgearcaseis leaking

at properlevel.Paypar-

armtosee ifitis securely

of itsnormalshape.Also

isin goodadjustment.See

mntobracketis secure.

rm-shaftnutsecurely.

-caseassemblyandmounting

enotto disturbadjusting

TION:Loosensteering

teningsteeringcasemounting

olumn.

dLinks.Seeifbodiesare in

rameandnotleaking,iflinks

edandif rubberbushingsare

kefluidtoexposedsurfaces.

bodieswithspecifiedfluid.

daddmore fluid.Repeat

pelledandreservoirisfull.

bserveifactionis normal.

d thereshouldberesistance

eals,Flanges,AxleEndPlay

eels,bearings,seals,drive

anneras initem52for similar

n,andinspectthefront-

lsin thesamemannerasde-

areto checktheU-jointend

e removedsothattheend

adeconveniently,when


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NTIVEMAINTENANCE

yinsamemannerasde-

ngsinsamemanneras

djust brakeshoesasdescribed

,Seal,VentandAline-

sto beoutofline,measure

eyebolttocenterof axle

stanceshouldbe equal.

eif itisin goodconditionand

onshaftforexcessiveend

ventthoroughly.

s,Alinement,Seals,and

sarein goodcondition,cor-

bledandmounted;iftheU-

itheachother andarenot

eslipjointis free,notexces-

ated;andthatthe sealson

donotleak.

assemblyandcompanion

dStrap,SideP9nel).These

onditionandsecurelymounted

examinebothfrontandrear

see,onrubbermountings,that

mits metalbacking.If

ghtenthemproperly,taking

emoveoilorgreasefrom

filmofbrakefluid ifrubber

t bondstrapsatenginesup-

Pawl,Linkage,Diskand

atchet,pawlandlinkage

re,andnotexcessivelyworn,

ly,andthatlining isnotoil

weenbrakediskandlining

eris released.


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RTRUCK(FEDERAL)

Linkage,andReturnSpring).

houldbeIViinchesbefore

minetoseeifpedalis securely

operatinglinkageisin good

excessivelywornatfriction

haspropertensiontobring

ositi

Documents

Tm 9-820 TRUCK TRACTOR FEDERAL 4- TO 5-TON