TM 9-748 90-MM GUN MOTOR CARRIAGE M36B1, 1945

7/30/2019 TM 9-748 90-MM GUN MOTOR CARRIAGE M36B1, 1945

1/444

CALMANUAL

Publ

icDomain,Google-digitized

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NICALMANUAL

ersedesthefollowingpublicationsinsofarastheyapplytothis

nsremaininforceuntilsuchtimeas theyareincorporatedinother

ficallyrescinded:OFSTB700-90,dated11August1943;OFSTB

ber1943;OFSTB731G-8,dated14September1943;OFSTB

ber1943;WDTBORD20,dated24January1944;WDTBORD60,

TBORD83,dated25 April1944;WDTBORD88,dated4May

d22May1944;WDTBORD125,dated 22July1944;WDTB

44;WDTBORD130, dated1August1944;andWDTBORD217,

ANUARY1945

TONOFRESTRICTEDMATTER

byvirtueofhisgrade orpositiontoknowl-

sifiedmatter.Suchmatteris entrustedonly

officialdutiesrequiresuchknowledgeor

graph23*,AR380-5,15March1944.)

PublicDomain,Google-digitized

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nuary1945

orCarriageM36B1,ispublishedfor

nceofallconcerned.

5)RJ

ARYOFWAR:

GF(10);ASF(2); SDivASF(1);

rm &SvBd(2);

S (1);PE(OrdO)

O, 9(3);R egO, 9(3);

ntralizedSub-O,9(3);

MA(2);A (10);CHQ

9-7(3);9-9(3);

;9-76(2);9-127(3);

(2); 9-327(3);9-328

-27 (3).

ls,seeFM21-6.)


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ION

.....................1-21-5

....3-45 9

sories5-89-23

GINSTRUCTIONS

.......................924

10-1224-29

ts13-1430- 39

ary

.15-1639-43

era-

6

quip-

-52

al

.24-2752-57

28 2958-59

ANCEINSTRUCTIONS

........................3060

ltools

3160-63

.........32-3364-78

nce

34-3978-114

..........40-52115-129

nd

3 60129157

nstal-

61-62157-165

xhaust

63-76165-187

.........77-85188-197

............86-91198-210


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stem92-95210-212

ngsys-

horn102-109221-228

15228-239

ometer,

9-242

-261

esuppres-

270

niversal

y138-147288-320

ks148-159320-360

71

nt173-176371-382

EQUIPMENT

177383

tion178-179383-387

gin-

96

ontrol

406

-195406-408

one

418

dlimitedstor-,

424-427


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ersedesthefollowingpublicationsinsofarastheyapplytothis

nsremaininforceuntilsuchtimeas theyareincorporatedinother

ficallyrescinded:OFSTB700-90,dated11August1943;OFSTB

ber1943;OFSTB731O-8,dated14September1943;OFSTB

ber1943;WDTBORD20,dated24January'1944;WDTBORD60,

TBORD83,dated25 April1944;WDTBORD88,dated4May

d22May1944;WDTBORD125,date


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caseofaccidentresultingininjuryor

filled outbythedriveron thespot,oras

after.

RMNo.48,DRIVER'STRIPTICKET

ENANCESERVICERECORD.Thisform,prop-

shedtothe driverwhenhisvehicleisdis-

ssions.Thedriverandtheofficialuserof

ndetailappropriatepartsof thisform.

sued forvehiclesinconvoyorontactical

ofthis formcontainsthedriver'sdaily

aintenanceservicereminderschedule.

.478,M.W.O.ANDMAJORUNITAS-

ECORD.Thisform,carriedonthevehicle,

elcompletingamodificationormajorunit

ission,transfercase,andtracks)replace-

descriptionofworkcompleted,date,

ge,andMWOnumberornomenclatureof

performingtheoperationwillinitialinthe

pairs,parts,andaccessoryreplacements

.6,DUTYROSTER.Thisform,slight-

schedulingandmaintainingarecordof

rations.Itmaybe usedforlubrication

.462,PREVENTIVEMAINTENANCE

LINSPECTIONWORKSHEETFORFULL-TRACK

DVEHICLES.Thisformwillbe usedforall

hour(1,000-mile)services,andfortech-

vehicles.

.9-70,SPOT-CHECKINSPECTIONRE-

EHICLES.Thisformmaybeusedby all

eirstaffrepresentativesinmakingspot-

ehicles.

.468,UNSATISFACTORYEQUIPMENT

usedforreportingmanufacturing,design,

ateriel,withaviewto improvingandcor-

orusein recommendingmodificationson

be usedforreportingfailures,isolated

nctionsofmaterielresultingfromfairwear

age,norforthe replacement,repair,orthe

nt.It doesnotreplacecurrentlyauthorized

cerecords.


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o.9-81,EXCHANGEPARTORUNIT

stag,properlyexecuted,maybeused

ceableitemsforlike serviceableassemblies,

ols.

3,and4).

arriageM36B1is anarmoredfull-

ehiclepoweredbya500-horsepower,V-type,

ankengine.Theengineislocatedintherear

steeredbytwoleverslocatedinthe driver's

ofthehull. Ithasfivespeedsforwardand

wiredfor radioandforaninterphonesys-

rret canberotatedthrough360degrees.

venbya1-cylinder2-cyclegasolineengine,

batterieswhenthemaingeneratorisnot oper-

alunitsin thevehicledrawlargeamountsof

ngposition)24 ft6l/2in.

velingposition)23ft 10in.

shield)8ft SVain.

83in.

(approximate)65,500Ib

(approximate)68,000Ib

80

d(onhardroadsurface)26mph

peeds(varyingterrains)4to 26mph

nespeed(noload)2,800rpm

eed500rpm


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SCOPE

TOWAGE

GUN

SHER

E


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es

gability60pet

ngability60pet

attankwillcross 90in.

e,suchaswall,thattankwill

tlowestforwardspeed)36 in.

efueling(approximate)100mi

mate)50mipergal

city164qt

4gal

SSORIES

reforinformationonlyand mustnot

isition.

owage

rLocation

etsonrearplate

ointBracketonrearplate

/carrierToolboxundersub-

ketonrearplate

outhandle)Bracketonrearplate

Bracketonrearplate

e-face,10-lbBracketonrearplate


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awage

rLacatian

ch,round,%g-in.

)Toolbag

tension,handy

ong

tension,V-j-in.

9)Toolbag

8-in.(41-C-

n.(41 -F-1030)Toolbag

(41-F-1572)Toolbag

ecting(41-F-

lpeen,32-oz

ee,Vi-in.sq

09-55)Toolbag

ee,3/4-in.sq

09-60)Toolbag

drive,12in.long

sible,Vi-in.sq

oolbag

sqdrive,17in.

sqdrive,(41-

.spout,1pt.

oor

p-joint,8in.

Toolbag

gnetic)(41-S-

ount

ist's,5-in.blade

purpose,13/4-in.

g


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es

owage

rLocation

purpose,IVa-in.

bag

ngle-end,8in.

ngle-end,12in.

ehd,alloy,steel,

Toolbag

ehd,alloysteel,

00)Toolbag

ehd,alloysteel,

005-5)..Toolbag

ehd,alloysteel,

ehd,alloysteel,

5)Toolbag

ehd,alloysteel,

1)Toolbag

ex(fortrans-

-W-

ex(fordifferen-

1-W-

%2-m.hex

Vs-in.hex

%e-in.hex

Vi-in.hex

%G-in.hex

3/s-in.hex

s/s-in.hex

sqdrive,3/s-in.


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owage

rLocation

sqdrive,%6-in-

sqdrive,Va-in.

g

sqdrive,%6-in.

sqdrive,5/a-in.

sqdrive,3/s-in.

sq.drive,7/a-in.

sqdrive,i:>/w

ag

sqdrive,1-in.

sqdrive,1Vie-

bag

sqdrive,1Va-

ag

.sqdrive,1Va-in.

ng(41-W-640-

emovingToolbox

ovingToolbox

N.

,3-in.blade

ox

M6Sparepartsbox

barrelbearing

N.

M2Toolbox


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es

NT,

,hand,M9

16-in.

sedof:

C-99

:

b,COo

rationsfor5men

ationsfor5men

rm5825


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owage

rLocation

affandwiper

etonengine

ead

8Ongun brush

reech

muzzle

) Toolbox

ox

AXS-808)(in

ssD,spec

nloadingBracketonengine

oxundersub-

11CD)

x

bag

Toolbox

box

N.

al..30Ongun

oundsIncal..30ammunition

0,MlSeeammunitionstow-

ing,M6Sparepartsbox in

0,M2Sparepartsboxin

pareparts boxin

ocontents)....Sparepartsboxin


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es

owage

rLocation

(flexbowgun)Ongun

0(flexbowgun)Ongun

..30Onsparebarrel

Ml(w/ocon-

artridge,MkIVInsmalltoolbox1

podmountOn tripod,M2

egun,M2Onfloornextto wall

ozSparepartsbox

.30Sparepartsbox

al..30,MlOneineachof two

w/o

tents)Sparepartsbox

N.

olbox undersub-

racketundersub-

0,M4Toolboxundersub-

Toolboxundersub-

,MlToolbox undersub-

egunOncal..50MG

nsparebarrel

al..50,M3Bracketonturret

Ml(w/ocon-

artridgeToolboxundersub-


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owage

rLocation

egunmountOnmount

M3Strappedtotop of

oolbox undersub-

M7,cal..50Toolboxundersub-

A2.

carbine)Bandolierright front

oxMl D440701boxongun

t sponson

esundersubfloor

ssponson,

tion,Mk

M15 Rearofdriver

gitudinalcom-

gunmount

ete,composedInsponsonrightof

ketinturret

ndbulbstow-

onquadrant

oxC101039

squadrant,MlBracketinturret

opeOnturretbasketfloor


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es

owage

rLocation

ightsideof hull

escopebracket

(spare)In boxesbyassistant

opereticle

complete,

4

forelev

forpanoramic

amictele-

fortelescope

pemount

M39C(for

scope,T104E1Onbracketonright

)

g

nboxesbyassistant

ete,composed

401

M9Bracketinturret

Bracketinturret

caseM51

dard)orM76D

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owage

rLocation

,M12Incase,panoramic

e,lubr

nating,IVzqt,

Inleftfrontturret

f

1936Strap ontoturret

bracketwithbooks

tinflashlights,

tlights,

andassist-

g,18qtOn90-mmrearam-

20-ftOnupperhull

upandcover,

in

,SNLG-233Instructionbag

al.(QMCstand-

orOnazimuthindicator

)Inbrackets:2left

D48076or

onupper

d-operated)...Toolbag

acketleftupper


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es

awage

rLacatian

No.478-1No.

ualtray

te,consisting

ec.1583)Brackettoleft of

ht)

ehindinstrument

ettorightof

partsand

tructionbag

arDepartmentBracketleftofdriver

0,FM-23-65

0,MGM2

90-mm,TM

-viewInmirrorbrackets

sInguntool box

nshrimp,45-ftx

et

cketonturret

e,M1941,

dersubfloor

No.520

x50-inOnturret


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awage

rLacatian

e(OD),15

,30-ftroll Toolbox

placeonturret

olbox

-ftroll Toolbox

ompassInstructionbag

RTS,

llingplugToolbox

n,assembly,com-

/s-in.,

ting

nTool box

derToolbox

rToolbox

ungerToolbox

gerToolbox

ngToolbox


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es

owage

rLocation

N.

bearingSparepartsbox in

ounted

parepartsbox

of:1eachinsmall spare

oxeslocated

eareachcal..30

sembly

gof:Sparepartsbox

embly

roup

bly

r

p,consistingof:Sparepartsbox

embly

mbly

sistingof:Sparepartsbox

y

mbly

bly


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owage

rLocation

artsbox

artsbox

epartsbox

rtsbox

lySparepartsbox

it Sparepartsbox

partsbox

eparts box

box

lSpareparts box

parepartsbox

Sparepartsbox

x

N.

acketonturret

semblyToolbox

oolbox

x

r pivotstudToolbox

lbox

Toolbox

rToolbox

ringassemblyToolbox

onsistingof:. Toolbox

8914

8961

y,B8962

261110

A9351

lToolbox


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es

awage

rLacatian

ungerTool box

-Toolbox

oolbox

VBehindinstrument

ox

matchtrackfur-

-inStowedw/lubgun

T,maleStowedw/lubgun

3Toolbox

atchtrack

t

furnished)Toolbox


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uctions

NSTRUCTIONS

mationfortheguidanceofthe per-

operationofthe equipment.Itcontains

withdescriptionandlocationsofcontrols

OFEQUIPMENT

tionedvehicleisfirstreceivedatthe

essaryforsecondechelonpersonnelto

hevehiclewilloperatesatisfactorilywhen

urpose,inspectallaccessories,subassem-

ndequipmenttoseethattheyare inplace

addition,theywillperformar un-intest

ctedinAR850-15,paragraph25, tableIII,

nparagraph12below.

ICIENCIES.

uringthecourseoftherun-intest will

eswithinthescopeofthemaintenance

zationbeforethevehicleis placedin

ondthescopeofthemaintenanceeche-

ontoahigherechelonforcorrection.

riousnaturetothe attentionofthe

URES.

Seethatportableandfixedfireextin-

charged,andsecurelymounted.Fixed

efirmlysupported,nozzlesproperlyaimed,


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quipment

edsafety sealsonfixedfireextinguisher

9).

R.Fillmainengineandauxiliarygen-

roomforexpansion.Alsoseethat engine

AUTION:Mix3/8pintofSAE30 engine

tobeusedin auxiliarygeneratorengine

agattachedtoengineoil fillercap,follow

orestartingthe enginewhenitem19is

tlevelinradiatorsurgetankandreplenish

forexpansionofcoolant.Duringperiod

heckvalueofantifreezeandaddas needed

aryengineunit,closefuelvalveand

dscreen(fig.13).Washin dry-cleaning

penfuelvalveandcheckfilterfor leaks.

vityandvoltagetestofbatteries

ras necessarytobringelectrolytelevel

pectterminalconnectionstobesure

and secure.

LPANFILTER.Removecarburetor

ter.Washelementsandoilcupsin dry-

ectthemtoseethat theyareingoodcondi-

tlevelwithneworcleanusedoil (par.

r.33),and reassembletheseunitssecurely.

torengineairfilterandwashelementin

withcompressedairandexaminetosee

.Reoilelement(par.33)andreassemble

LTS.Examineallaccessibleaccessories,

waterpump,oilfilter,mainand auxiliary

seethat theyareingoodconditionand

tdrivebeltstoseethatthey areingood

usted.Fanbeltsshouldhave1-inchfinger-

3b)halfwaybetweenpulleys.

Examineallexposedwiringandcon-

lean,ingoodcondition,andsecurelysup-

gnmaterialfromtracksandsuspen-

ordamage,loosewedgenuts,connectors

racksarecorrectlyassembledandad-

withverticalvolutespringsuspension

a-inch,ormore than%-inchtracksag

ndrearsupportrollers(par.149c).

DFLANGENUTS.Seethatallsprocket,


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uctions

portrollerassembly,mounting,andflange

e.

SHIELDS.Examinefenders,sand

ardsto seethattheyarein goodcondition

ONS.Inspectcable,pintlehook,pintle

onnectionstoseethatthey areingood

tedandconnected:

NDCAMOUFLAGENET.Seethatall

re,doors,andescapedoorareingoodcon-

edoorhingesandlatchesandescapedoor

notexcessivelywornandareadequately

notfullyopenescapedoor.Besure

closefreely.Makesure thereareno

or rustandmarkingsarelegible.Ex-

agenettoseethat theyareingoodcondi-

ectperiscopeheadsandelbowsto

condition,clean,andsecurelyattachedto

scopesaresecurelymountedinholders.

estforwearorbind andseethatlocking

desiredposition.Examinespareperiscopes

geboxesto seethattheyarein goodcon-

CAUTION:Periscopewindowsmustbe

thor brush.

macompletelubricationofthe

ctionsonLubricationOrder,paragraph32,

tslubricatedorservicedin items(1)to

velsandadd oilasnecessarytobring

heoilonlyif conditionindicatestheneces-

r gradeforexistingatmospherictempera-

s(15)to(17)during lubrication.

NSIONS.Inspectallsuspensionbrackets,

uidestosee iftheyarein goodcondition,

secure.Seethatwheelsandrollersarenot

ls.Examinerollerandsuspensionwheel

tionfromwheels.

Examineallshafts,arms,rods,con-

toseethat theyareingoodcondition,

djusted.Checkreleasedpositionofsteer-

ectlypositionedwhenhorizontaldistance

ousingcovertofront edgeofleveris 7to

NDUNIVERSALJOINTS.Seethatpro-


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uipment

ointsare properlyalined,securely

excessivelyatseals.

missionanddifferentialunitbreather

dcondition,securelymounted,andnot

artengine,observingallprecautions

eactionofstarter toseethatit engages

nusualnoiseandhasadequatecranking

that enginewillrunat800 to1,000revo-

arm-up.Startandtest auxiliarygenerator

atesproperly.

AGES.

neoilpressure mustbeindicated

mustshow60to100 poundspressureat

ute.Stopengineimmediatelywhenlow

meson above1,000revolutionsperminute.

age.Readingshouldbeapproximately

emperature.Highwatertemperature

aximumsafeoperatingtemperature,235F.

hicleuntilenginetemperatureisabove

ayregisterahighpositive(+ )charge

engineuntilgeneratorrestorestobatteries

.Onlya slightchargeorzeroreadingis

ccessoriesturnedoffandbatteriesfully

orswitchin relativepositions,fuel

offuel ineachtank.

etershouldindicateenginespeedin

drevolutionscounterregisteraccumulating

Observewhetherenginerespondsto

ttlepromptlyandproperly,and ifthere

incontrols.Makesureengineidles

nsperminute.

ELDWIPER.Seethattheseunitsare in

situationpermits,testhornforproper

shield(driver'shood)is inuse,besure

.Testwipertosee ifitoperatesproperly,

assevenlyandfirmlythroughits fullstroke.

thatunitsarein goodconditionand

permits,openandcloseallswitchesand

rly.


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uctian*

Lookundervehicleandinengine,

partmentsforindicationoffuel,oil,orcool-

tanyleaksfound.

ENT.Checktoolsandequipment

8to besureallitems arepresent,service-

edorstowed.

vehicle,besurethatturretcontrollever

ee thatgunbreechandbarreltravel locks

dto preventinjurytopersonnelanddam-

efollowingprocedures(1)to(10)

eston thevehicle.Onvehicleswhich

or moreinthecourseof thedeliveryfrom

organization,reducethelengthoftheroad

ecessarytomakeobservationlistedbelow.

ationoftheengineat speedsapproach-

donthecautionplateshouldbe avoided

NDGAGES.CAUTION:Donotdrive

eraturereaches100 F.Observeallperti-

ethey registertheproperfunctionofthe

Withvehiclein motion,speedometer

eedandodometershouldregisteraccumu-

ststeeringleverstoseeif theyhave

velattop(fig. 139)andseethatlever

sinappliedpositionforparking.With

kestosee iftheystopvehicleeffectively

whenappliedindependentlybeforelevers

.139).

freetravelmustnotbe lessthan2

ches(fig. 114).Clutchshouldnotgrab,

engagementorslip whenengagedunder

hrougheachspeedrangeoftrans-

rgearshiftleveroperatesproperly,and

sualvibrationsornoise inanyspeedrange

e,excessivewear,loosemountings,orim-

rtduringtestrunfor anyunsatis-

haracteristics,suchasstalling,misfiring,

on,oranyunusualnoisethat mightindi-

essivelyworn,orinadequatelylubricated

s.


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quipment

onthealertfor anyunusualnoise

orpowertrainthatmightindicatelooseness,

orimproperlubrication.

EINTERVALSFORSERVICES(7)TO

ehandcautiouslyoneachtrackwheel

bto seewhethertheyareabnormallyhot.

otouchwiththe hand,bearingsmaybe

damaged,orimproperlyadjusted.Check

esforoverheatingorexcessiveoilleaks.

EL,ANDWATER).Afterstopping

partment,fightinganddrivingcompart-

sforfuel,oil,or coolantleaks.Examineall

hoses,and connectionsforleaks.

TRAVERSINGMECHANISM).Disen-

placevehicleona10-degreelateralincline

geturretlock,andproceedwiththefol-

ehandand powercontrols,traversethe

degreerangeandobservewhetherthereis

Withthegun pointedforwardorrear-

itsentirerangeto seeifthereis anybind-

ticaction.Atcompletionoftests,besure

manualposition,andgunbreechand barrel

ockareengaged.

ALROADTEST).Aftermakingthe

on hardlevelsurface,inspecttrackstosee

satisfactory.Onvehiclesequippedwith

ension,tracksshouldhavenotlessthan

nchsag(fig.151) halfwaybetweencenter

eels(par.149 c).

dReports.

atvehicleOperator'sManual,Lubri-

rmNo.26(Driver'sReportAccident,

dW.D.,A.G.O.FormNo.478(MWOand

acementRecord)areinthevehicle,are

ed.NOTE:U.S.A.registrationnumberand

stbefilledinonFormNo. 478fornew

etionoftherun-intest,correctorre-

d.Reportgeneralconditionofthevehicle

authority.


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uctions

ENTS

containsdescription,location,and

onofeachofthe controlsusedindriving

noperationofthevehicle,however,are

oftheinstrumentsandcontrolsin ve-

ainedinSectionVII.

g.6).Twosteeringlevers,oneto

tedimmediatelyinfrontofthedriver. To

teeringlever onthesidetowardwhichit

backononeofthe leversslowsdownthe

speedoftheothertrackis automatically

bothleversatonceslowsdownor stops

theamountofpull exerted.Thus,the

brake controlleversofthevehicle.

L(fig.7).Theparkingbrakepedal,

ofthesteeringlevers,raisesand lowers

uadrantsonthesteeringlevers.Whenthe

wardpositionandthesteeringleversare

ebrakesare lockedinparkingposition.

backon thesteeringleversandpushthe

oallowthesteeringleversto "bemoved

AL(fig.7).Thefootthrottlepedal,

rightfrontofthedriver, isdepressedto

dreleasedtodecreaseenginespeeddownto

.6).Thehandthrottle isbracket-

lcaseabovethefootthrottle.Pulling out

sesenginespeed.To lockthehandthrot-

ushinonthe lockbuttoninthecenterof

6).Theclutchpedal,locatedonthe

sconvenienttothedriver's leftfoot.To

missiongears,theclutchis disengagedby

al.

riming pumpisbracket-mounted

oprimethe engine,pulloutonthe primer

ackin, thuspumpingfueltothe intake


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2

T).Iftheflangeon oneside

e other,thewheelspindlemaybebent.

hewheelrimandif wheelisoutofline

espindle(par. 153h).Examinewheel

sathubcapor oilretainersatinnerside

ehubcapgasketor oilretainers(par.

excessiveendplayandwearwhenever

dlerwheelbyspinningand rockingthe

magedbearings(par.152b).Make


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Instructions

erWheelBracket

ndrelief fittingsareingoodcondition.

ngfittings.

ollers.Examinetracksupport

ackoffrollers,andspin androckrollers

wear,orlooseness.Replaceunserviceable

minerollersfor indicationofexcessive

s.Replaceleakingretainers.Makesure

gsarein goodcondition.Replacedam-

ethat allattachingnutsandcapscrews

els.Movethevehicleasrequired

wheelsandtires.Inspectwheelsand

vewear.Iftires havedeepcuts,grooves,

hasseparatedfromtherim duetoblow-

ewallsaregougedoutby theconnectors,

eel(par.156).Iftires arewornsothat

eris19Vzinchesor less,ortreadwidthis

e suspensionwheekExaminewheelsfor

easeleaksatoilseals.Replaceleakingoil


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eels(par.156 b(2))and spinand

sforwear,bind, damage,orlooseness.

amagedbearings(par.156). Make

ttingsare ingoodcondition.Replace

s.

mblies.Inspectsuspensionmount-

springs,andspringseatsfor cracks,dam-

rts.Replaceunserviceableparts(par.

tesonarmsandlevers (fig.170),and

ordamagedplates(par.159).Withvehi-

spectvolutesuspensionspringsfor weak

hasweakened,takenapermanentset,

eupperorloweredgeof anyonecoilis

f anothercoil,thespringmustbereplaced

eonnutsand attachingcapscrewsto

specttrackskid tomakesureitis not

mounted.

eachtrackconsistsof79linksjoined

rsintoanendless tread(fig.150).Tracks

ypesof linksarecurrentlyuseddepend-

ditionsunderwhichthevehicleistobe

ypesoftracksarelistedand identifiedon

art(par. 149d).Thecenter-to-center

helinkpinsareidenticaland,therefore,the

dgesareusedwitheachtypelink.The

duction.Thistypelinkismadeup of

evron-typehardenedsteelgrouseris

ngsarebondedtothe pins.Thesebush-

dwhenthepinsare pressedintothetwo

ock.Thetwistingactionof thepinsas

absorbedwithintherubberbushings.

eendsof thepinstoreceivethetapered

wistthe bushingssothatthetracktends

saroundthesprocketandidlerwheel.A

ondandthirdbushingon eachendofthe

etweenthepinandblockto dissipateor

ndthusreduceradiointerference.The

onnectorsjointhelinkstogetherand guide

erthesuspensionwheelsandoverthesup-

wheels.Thesprocketteethengagethe

ichthusreceivethedrivingwear instead

ectorsareheldinplacebythe tapered


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eInstructions

S

ckTensionwithWrench(41-W-640-400)


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ION.Placevehicleonhardlevel

sreleased.Raiseandlockexhaustde-

foruseonbracketretainingboltsand

gratchethead(41-H-1838)intotubular

dinstallingsocketwrench(41-W-3058-

oretainingboltsinthei dlerwheel

rclockwiseseveralturns(fig.154).

boltsoutof threadsinbracket.Turn

erclockwiseasrequiredtospreadthebracket

dusingforceonspreaderscrew.

ench(41-W-640-400)onhexendof

dofadjusting wrenchslightlytorelieve

ethecollarretainingspring anddrive

dle.If necessaryslidecollarbackonto

hilerepositioningthe adjustingwrench.

wheelisloweredintoneutralposition

eased.

DLERWHEEL.Whentracktension

enterofthe idlerwheelwillbebelowthe

oftheverticalaxisofthe spindleinthe

ngthetopof thetrack(fig.155),or

essary,andplaceastraightedgeontop

eadjustingwrenchhandleuntil sag

weencenterand reartracksupport

Ainchnorless thanVfcinch.

INDLE.Alineserrationsonspindle

etainingspringanddrivecollaronto

echecktracktension.Backoutspreader

ectintoslotinbracket.Tightenboth

securely.Thentightenspreaderscrew

workingloose.Lowerandlockexhaust

ors.

erenttracklinkconnectoristobe

hasbeenwornnearlyequalto theaverage

hichhaswearequal totheconnectoron

k.Ifthisis notdone,theunequalwear

onthelink pinbushingsandwearonthe

sengagedbythe sprocketteeth.

NECTOR.Followprocedureinsub-

movethe connector,exceptdonotre-

theconnectorononeside beforeremoving


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Instructions

rackConnectorWithLeft-hand

2997-289)

ECTOR.Followprocedureinsub-

nstall theconnector.Checktrack

ors.

vingwearononeend ofthetrack

chedtheserviceablelimit(fig.152),the

versedtoequalizethewearby exchanging

ontheoppositeside ofthetrackorby

ar.hbelow).

NECTORS.Marktheconnectorson

paint.Disconnecttrackatrearidler

y trackonthegroundin frontof

ectorsfromeachsideofthesectionof

hiclebydrivingthemoffthe pinsafter

LCONNECTORS.Installconnectors

movedfromoutersideoftrackon the

eninstalltheotherconnectorsonthe

necttracksectionsandmovevehicle

nsuntilallconnectorsareinterchanged.


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ECTING

-F-2997-388)

PD339454

PinsWhilePullingTrackCannectar

5)below).Adjusttracktension(sub-

erenttracklinkisto beinstalled,

ehaving wearnearlyequaltotheaverage

ary,trimthetreadfromnewrubber

eightofthe otherlinksinthe track.If

tofthenewlink willsubjectitandthe

essiveshocksandwearandcausethevehicle

Movevehicletopositionlinkto

eenrearidlerwheelandtheground.Dis-

2)below).Removeconnectorsfromthe

mor drivingthemoff.

nstalltheconnectorstojointhe

etrack.Connectthetrack(subpar.g(5)

on(subpar.babove).

ks.

ckistheterm commonlyusedto

torsononeside haveclimbeduponto

over theteethonthedrive sprocket.

useinalmosteverycaseis insufficient

asclimbedthe idlerwheel,itoftencan

sconnectingthetrack.Ifthetrackhas

h,itmustalwaysbedisconnected.Pro-


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Instructions

ECTINGFIXTURE(41-F-2997-389)

nectoronInnerSideofTracfc

hrowntrackalsodependsuponthe ac-

sethe vehicleisbogged.

TRACK.Ifvehicleislocatedso that

isconnectingbetweensprocketandsus-

suspensionwheel,disconnecttrackat

e.Towvehicleontodrysolidgroundand

ow).Whenvehicleislocatedso work

tension(subpar.h(1) above).Ifthe

eel,tryrepositioningit withcrowbars.If

st tracktension(subpar.habove).In

sitioned,disconnecttrackmidwaybetween

nwheel(subpar.g(2) below)'.Then

5)below)andadjusttracktension.When

esprocket,disconnecttrackbetweendrive

sionwheel.Repositiontrackandadjust

anbedisconnectedmidwaybe-

esprockets(fig.160)or therearidler

158).If thetracksaretobe disconnected


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PinsWithRight-handConnectingFixture

tallingConnector

ectorsorlinks, itisusuallydoneat the

oberemoved,thetrackis usuallydis-

movethefendersandsandshieldsas

Releasetracktension(subpar.b(1)

utfromouterwedgeanddriveoutwedge.

onnectingfixture(41-F-2997-389)on

asshowninfigure157. Alinethefixture

onnectorstraightoffandtakeupslack.

positionbyturningtheadjustingscrew.

connectorabouthalf-wayoffwhile

ywithhammer.Removeadjustingscrew

-F-2997-388).Installfixtureasshown

ns.Tightenjackuntil fixtureissnug

nnectorasitisremoved.Pulloff theout-

wedgefrominsideconnector.Withright-

eendsofpins, installtheleft-handfixture

shownin figure158.Pulltheconnector

sofpins.Removetheleft-handfixture

screw.Install thefixturetoholdthe

mannerastheright-handfixtureinfigure


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Instructions

ectoroffthepins. Operatethefixture

the tracklinksuntiltracktensionis re-

iftedoff thepins.

ophalfoftrackto therearofthe

ound.

ethenewtrackaheadofthevehicle

oved.Temporarilyjointhetracksby

partway.Ifold trackiscompletely

pensionwheelsarerestingontheground,

of thefrontsuspensionwheeldeepenough

thenewtrack.Useaboardor crowbars

rampwhenthe vehicleistowedonto

icleforwardontothenewtrack to

ntend.Blocksuspensionwheelstokeep

onnectthenewtrackfromtheold.Move

eextremeforwardposition.Tempo-

ghten theretainingbolts.Attachcable

Useatowingvehicleandpull thetrack

wheelandrollersuntil itengagesthe

nnectthecable.Turnthesprockethub

rstobringthe endsofthetracktogether.

k.

movetheadjustingscrewsfromthe

(41-F-2997-86).Placethefixturesinline

endstogetherasshownin figure160.

connectorswillslideontopins.Drive

n,andremovethefixtures.Thendrive

againstlink.Insertthetrackconnector

ynut.Tightennut,using 80foot-pounds

tlyon wedgetoseatitsecurely.Repeat

acktension(subpar.habove).Install

iouslyremoved(par.166c).

Tracks.

inksshowinggreaterwearonthe

nbeinterchangedwiththetrackonthe

ewear.Rubbertrack,modelT51,with

ersedorturnedend forendtoequalize

ectorsorblocks.Allchevron-typetracks

KS.Withthevehicleonahardlevel

racksatthefrontandtowthe vehicleoff

ckinto positionwiththerearend of

htfrontsuspensionwheel.Positionthe

suspensionwheel.Towvehicleonto

dadjusttracktension.


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dCannectingTrack


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eInstructions

owsameprocedureasinstep(2)

urnedend forendandinstalledon the

omwhichthey wereremoved.

CKETSANDHUBS.

procketisboltedtothe outer,and

chtrackdrivesprockethub(fig.I5O).

gagethetrackendconnectorstosupport

ketscanbeinterchangedonthehubs

ssemblyononesideofthevehiclecanbe

emblyontheothersideto equalizewear

sprocketteeth.Whenreplacingorex-

ctapairwhichhavenearlyequalwearso

force.Thetrackdrivesprockethubis

ketshaftflangebysix studsandsafety

peredwedgerings)are usedonthe

fitthetaperin holesinhub.Whenthe

dgestakeupany clearancebetweenthe

the hubfromworkingonthestudsand

DriveSprocket.

ESPROCKET.Ifonlythe outertrack

moved,itisnotnecessarytodisconnect

nder(par.166b).Releasetrackten-

thecapscrewswhichattachsprocket

cketwhilethelast capscrewisbeing

ofthesprocketandlowerthe sprocketto

ESPROCKET.Setparkingbrakes.

sitionandwhileit isbeingheld,screwin

hecenteroftheupperrear quarterofthe

s apivot,forcethesprocketintoplace

s.Screwinseveralcap screws,thenre-

mainderofthe capscrewsandtighten

dsoftorquetodraw sprocketupevenly

tension(par.150b(2) ).Installfront

ocketAssembly.Ifhuband

obeinterchanged,thefollowingprocedure

thsides ofthevehicleatthesame time.

andshield(par.166).Loosenall hub

eeor fourturns.Disconnecttrackmid-

dfrontsuspensionwheel(par.150g(2) ).

kclearssprocket.Rapwithhammeron


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ehubstuddowels(wedgering) loose.

supporthub.Pryevenlyagainst inner

mtoforcehub offstuds.Removehub

orHubandSprocketAssemblies.

e hubarebeinginterchanged,remove

nterchangesprockets.Tightencapscrews

dsoftorque.Ifhubandsprocketassem-

ed,replaceoldstylecapscrewswithnew

e.Tightenallsprocketcapscrewswith

nds.Shifthub andsprocketassemblies

e.

inaldrive mustbeinspectedfor

htenboltsorreplacegasket(par.144b).

Assembly.Raisetheassemblyand

e sprocketshaftstuds.Placedowel

installnew safetynuts,andtightennuts

necttrack(par.150g).Installfenders

removed.

S.

erwheels,whichsupportthetracks

eavy-dutyballbearingsmountedonlarge

spindleis eccentricviththeinnerend

gbracket(fig.161).This providesa

sitionofthe idlerwheeltoadjusttrackten-

CK.Removerearfender(par.166).

par.150b).Disconnectthetrackbelow

oved(par.150g)andmoveuppersection

upportrollers.

keoutsixcapscrewsandremove

hecotterpinfromspindlenut. Unscrew

1-W-3058-480)asshowninfigure162,and

Attachtheidlerwheelpuller(41-P-2940-

apscrewsandwashers.Holdpullerfrom

dyofpuller, andturnthepullerscrew

nwheelisfree,liftit straightoffspindleto

ers.Removeidlerwheelpuller.

Supportidlerwheel,outersideup,

hehub bore.Prybearingspacertoone

gand oilretainersbyworkingdrift


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Instructions


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earIdlerWheelNut

urnwheeloveron blocksandliftout

bearingracepuller(41-P-2905-60)and

erbearing,or driveitoutby working

terrace.

ycleanthespindleandtheinsideof

ngsandoil retainersindry-cleaning

cracksordamage,andhubborefor wear.

ageorcrackedorchippedballs,andspin

freeandnotworn.Makesure bearing

magedorgalled ontheends.Examine

ge.Makesuregroundsurfacesincontact

nginner racesarenotscuffedorscored.

n,orunserviceableparts.

heel,outersideup,onblocks.Pack

g.161)withgeneralpurposegrease(par.

yintohub bytappinglightlyonouter

buntil itseatsagainsttheshoulderby

undthe bearingouterrace.Turnwheel

spacer,smallerenddown,in thehub.

hgeneralpurposegrease(par. 33).Start

hubbytappinglightlyonthe outerrace.


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Instructions

dlerWheelWith IdlerWheelPuller

itseatsagainsttheshoulderby working

bearingouterrace(fig.164).

RSONSPINDLE.Soaktheretainersto

minutesinwarmedengineoil tosoften

wo-piecespacernotover\\K inchthick

othoilretainersin thehubtoprovide

tsideretainerandtheflangeonspindle.A

bemadebyremovingthe thickringfrom

ner(greaseseal)andsawingit inhalf.

doil retainerleathersealswithgeneral

etaineronthe spindlewiththeleather

eand carefullyworkitontotheshoulder

ositionthe secondoilretainer(grease

atherlip facingthespindleflange.Insert

eviouslymade,betweenthefirstoil re-

eso theouteredgesareevenwiththe oil


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earIdlerWheelInnerBearing

ainerstightlyagainstspacerto holditin

ONSPINDLE.Screwthepilotofin-

50)onspindle(fig.165).Pushthe idler

s itwillgoby hand.Slidethecupof the

41-T-3216-150)ontothescrewandin-

nstallingtoolscrew(fig.166)and push

ndle,watchingto seethattheoil retainers

venlyaswheelis beingpushedon.Stop

ngsare felttoseatfirmlyagainstshoulders

nutatleastthreefull turns.Usingawood

linnerflange,drivethe wheeloutward

fthesplit spacerusedtoseattheoil re-

beremovedwitha screwdriver.Again

oolnutto seatthebearingsonthe spindle.

pindle.Installflat washerandnut

(fig. 162),usingsocketwrench

ndspreadnewcotterpin.Usingnew


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Instruetions

otofTool(41-T-3216-150)onRear

eelhubcap withsixcapscrewsandlock

crews.Fillhubwithgeneral purpose

track(par.150g)and adjusttrack

MOUNTINGBRACKETS.

erwheelmountingbracketsare

erearcornerof thehull,oneoneachside

pindlehousing issplitatthe bottomso

ampedin thebracket.

rfender(par.166).Releasetrack

nnecttrackbelowrearidler wheel(par.

ff trackforwardofidlerwheel.Remove

bolt(fig. 154)fromthebracket.Remove

le andslideoffthelockingcollar.Sup-


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earIdlerWheelWithInstallingTaal

orkspindleoutofbracket.Removethe

ingbracket.

eusedto alinebracketwithhull,

gcompound(51-C-1616)andposition

etintoposition.Coatthreadsof bolts

int sealingcompound(51-C-1616).In-

Raiseidler wheelandspindle,andinsert

ltheinnerretaining bolt.Slidethelock-

dleandinstallanew cotterpin.Pullthe

backoverthe rearidlerwheel.Connect

st tracktension(par.150b).Install

LLERS.

ksupportrollers(fig.150) areof

Therollersturnonballbearings(fig. 167)


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eInstructions


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upportRollerBearingLockRingWith

260)

tedin therollerbracket,

andarelief fitting.

dureinparagraph155andremove

romthe suspensionmountingbracket.

chattachrollershaftto thebracketand

Placerollershaftinvise, innerend

sherdownoutof notchinlockring.Re-

erwrench(41-W-3260)asshowninfigure

emovebearingretainerwithspanner

owninfigure169.Liftroller offshaft

spacer.Placerolleronblocksspacedto

longdrift, driveoutthelowerbearing

drift aroundbearingouterrace.Turn

bearinginnerspacer.Driveoutthe other


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Instructions

ollerBearingRetainerWithSpanner

tsandcenterbore ofroller.Care-

xcessivewearordamage.Makesurebear-

en turninginrollerboreand thatrolleris

ftfordamageorwearon surfacescontacted

ofbearingsonshaft toseethatthereis

tbearingspacersfordamageorwear.

ndrelieffittings areingoodcondition.

damagedwhenremoved,theymustbe

koilretainersin warmedengineoil

in visewithinnerorflangedend down.

nnerend up.Packbearing,andcoat

withgeneralpurposegrease(par.33).

rollerbore.Drive bearingintoplace

ore byworkingdriftaroundthebearing

aceofoilretainer withantiseizecompound

nersquarelyintorollerbore withlipof

nga punchwithasquareend,driveoil


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Instructiam

gSuspensionAssemblyPorts


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ERBRACKET

ER

EW

LUGS

GBRACKET

SPRING

SHING

CAPSCREW

BBINGPLATE

G

SEAT

CKETEND

CREWS

BBINGPLATE

T

AP

CAPLOCK

CAPSTUDS

EW

HEELEND

ACINGPLATE

SHINGS

ACERS

shoulderinroller bore,takingcarenotto

er.Insert outerbearingspacerintothe

erededgedown.Turnroller overon

bearing spacer.Installtheotherbearing

owertheroller downontotheshaft.

rontoshaftwithspannerwrench(41-W-

sheronthe shaft.Installandtighten

pannerwrench(41-W-3260).Securethe

lockwasherintonotchinring.

oplaceon bracket.Installand

boltswithsafetynuts. Applylubricantas

der(par.32).Followprocedureinpara-

bracketwithroller.

LLERBRACKETSANDSKIDS.

upportrollerbracketsareheavy

of eachsuspensionmountingbracket(fig.

ntingbrackettrackskids,atthetopof

trackwhenitdropsbelowthe rollerwhen

movesandshields(par.166).Re-

whichattachtrackskidtothe suspension

eskidoutfromunderthe track.


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Instructioni

Bracket.Withahydraulicjack

nbracket,raisethetracksufficientlyto

pportthebracketand rollerandremove

chittothe suspensionmountingbracket.

bracket.

cket.Raisebracketandroller

twocapscrewswithinternal-toothedlock'

spensionbracket.Installtheothercap

tencapscrewsevenly,andsecurethem

ethroughthethreescrewson,eachside

vehydraulicjack.

rackskidinto position.Install

ewswithinternal-toothedlockwashers.

ewithaloopof lockingwirethrougheach

LS.

pensionwheelssupportthevehicle

track(fig.150).Thewheelsareof

yturnontaperedrollerbearingssup-

d gudgeonthroughtheendsofthe arms.

izedto rimswhicharepressedontothe

spressure.Onlythelatesttypewheelswith

discussedinthe followingsubparagraphs.

UT.Removearmwheelendgudgeon

.Ifnecessary,prywrenchhandledown

sswrenchhandleandunderedgeofhull

HEEL.Placethebogiewheellift"

nderthearmsof thewheeltobelifted

pointingawayfromthe wheel(fig.173).

therforwardorbackward,dependingupon

oved,topushtheliftinto averticalposition.

NOTE:Itwill benecessarytodiscon-

rocketwhenusinglift toraisefrontwheel.

touterendofarmwheelendgudgeon,

washerusedtoprotectthe threadsonthe

threadedendofslide-hammertype

7-27)intoendofthegudgeon(fig.174).

t)outhardagainstnuton endofpuller

geon.Rollwheelawayfromarmsand


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uspensianArmWheelEndGudgeanNut

eel,outersideup,onblocks.Bend

rdownoutof notchinbearinglocknut.

unscrewlocknutfrombearingsleevewhile

sleevefromturning.Removenut,lock

kingplate(fig.175).Removepinfrom

inpin holesinadjustingnut,unscrew

amagethreadsonsleevewhileholdingit

adjustingnut.Turnwheeloverand pull

cknut, lockwasher,oilflinger,and

emovedin thesamemannerwhileholding

gdriftthroughthe upperbearingcone

ndthe lowerbearingcuptodriveoutthe


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Instructions

RACKET

ensionWheelWithLift(41-L-1375)


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ensionArmWheelEndGudgeonWith

-2957)

Turn wheeloveranddriveoutthe other

oroughlycleanallpartsand the

nwheelhub. Carefullyinspectbearing

r excessivewearordamage.Inspectbore

ngcuphasnotbeenturning inthehub.

gedwhenremovedandmustbe replaced.

akesureoil sealcontactsurfacesare

t ofbearingconeandrollerson sleeve

texcessivelyworn.Inspectgudgeonfor

sonkeyway.Makesurewheelisservice-

drelief fittingsareingoodcondition.

koilsealsin warmedengineoilfor

oattheinnersurfaceofthe bearingsleeve

orgeneralpurposegrease.Withwheelon

bearingcup squarelyintohubborewith

o placebymovingthedriftaroundthe


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Instrucf'ans


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)

pensianArmWheelEndGudgean

tsagainsttheshoulderi nhub.Packthe

he cupwithgeneralpurposegrease.Run

ngthofthethreadsonsleeve.Placethe

pandinsertthesleevethroughthe coneand

esonoilseal andadjustingnutwith

tarttheoilseal squarelyintohubbore

ownandrubber sealsideup.Usea square

roundtheoilsealtakingcarenot todistort

ving itintoplaceagainstbearingcup.

vewithlipside up.Turnadjustingnut

nutwith aholeinthe plate(fig.175).

plateinto adjustingnut.Installoilflinger

ewlockwasheron sleevewithinnertang

knut andtightenwithpunchandham-

rfrom turning.Bendoneofthelock

in locknut.Turnwheelover.Install

ollers.Screwthe adjustingnutonto

e.Installguide(41-G-1235-505)onarm


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Instructions

wninfigure 176.Insertthegudgeon

e.Useblockstosupportgudgeonso wheel

nbothdirectionswhiletighteningadjust-

seatedandaslightdrag isfelt.Thenback

toone-quarterturnto allowwheelto

ssiveendplay.Removethegudgeon.

turb theadjustingnut,installthe oilseal,

nger,lockwasher,and locknut.Tighten

lockwasher.

Woodruffkeyissecurelyinstalled

positionandi nsertgudgeon(fig.176)

ub.Alinekeyin gudgeonwithkeywayin

oplace.Coatcapscrewthreadswith

ndinstallcapscrewwithlockwasherin end

geonguide(41-G-1235-505).Installthe

eon.Applylubricanttowheelasinstructed

32).Movevehicleforwardorback-

sideofwheelthelift wasplaced,tolower

ovewheellift(41-L-1375).Beforedriv-

nwrench,ifnecessary,totightengudgeon

NSPRINGS.

steelvolutespringsareusedin each

eheldin averticalpositionbetweenthe

bottomand thesuspensionmounting

171).Nocenterguideisnecessarysince

ted withinanothercoil.

ovefendersandsandshields(par.

ar.150g)anddrivevehicleslowlyfor-

rssuspension.Applyparkingbrakeand

Placehydraulicjackunderedgeofhull

ensionmountingbracket.Operatejackto

leisseento raiseslightly.Removethe

kskid.Removebothplugs fromtopof

ugwrench(41-W-1960)(fig.177).Insert

rs(41-C-2556)intothebracketholesand

spring seat.Compressthespringsby

tsevenly(fig.178)until suspensionlevers

ms.

ARMS.Placeahydraulicjackonthe

e twosuspensionarmspacers.Operate


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uspensianBracketPlugsUsingPlug

sthespacers.Bendearson bracketcap

udnuts.Removethestud nutsandpull

ck.Removebothsuspensionarmspacers

racketendgudgeons(fig.171).Rollthe

partaspossible.

INGS.Raisejackunderspringseat

aisedslightlyoff washerontopofbracket.

2inch atatimeandl owerjackuntilboth

eirfull length.CAUTION:Holdcompres-

ure theyarenotunscrewedfromspring

nuts.Removebothspringcompressors

suspensionleverswithacrowbarunder

underthe vehicle.Removejack,and


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nstructions

gVoluteSpringWithSpringCompressors

s.Liftsprings outofsidesof mounting

ensionlevers.

ringsurfacesclean.Inspectallparts

ngsonendsofspring seatandifexcessively

Removeringsfromspringseatbossesand

seorreplacetherings.Examinebushingsin

shingsareexcessivelyworn,replacethe

seat tomakesurebushingshaveaclear-

Examinerubbingplates onboththe

cessivelywornordamaged,replacetherub-

ethe gudgeonsoutofthesuspension

andbushingsandifexcessivelyworn,re-

ms.Alsoinspectthesuspensionarm spacers


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oved,spinthe supportrollertotestthe

ge.Examinethevolutespringsfor wear

prings,wheninstalled(par.149 j),re-

eplacebothspringsunlessthe springshave

shorttime;inwhichcase,onlytheweak

NGS.Makesureringsareinplaceon

ospringson thespringseatunderthe

tthetwospringcompressors(41-C-2556)

osuspensionleversonthespring seat

seatandhold itinplacein bracketby

ospringseat.Withahydraulicjack,raise

esametime,turncompressornutsto com-

ovethejack.

ARMS.Movewheelsandarmsinto

acket.Insertgudgeon,withholeinendto

terarmand throughaspacerintothe

rpairof arms.Raisearmsandplacea

dgeonsat eachend.Supportthearmsby

thetrackunderthe spacers.Turn

dsare vertical.Raisetheasesmblyuntil

sof bracket.Positionthecapsonendsof

hnewlocks.Tightennuts,and secureby

againstflaton nut.Removejacksfrom

movespringcompressors.Installsus-

tplugs,usingplugwrench(41-W-1960).

e). Connecttrack(par.150g)and

50b).Install fendersandsandshields

PENSIONASSEMBLIES.

utespringsuspensionassembly(fig.

unit.However,ifthemountingbracket

etobereplaced,it ismoreconvenientto

attachedtothevehicle(par.157 b).

ack(par.150g)andpullit offsup-

onwheelsonbothsidesof vehicle.Raise

raulicjacksuntil suspensionwheelsare

Placeblocking,levelwiththeconnectors,

wheels.Lowerthehulluntil wheelsrest

vethenutsandboltswhichattachmount-

hoistto suspensionassembly.Raisehull


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eInstructions

atinnerside ofbracket.Slideandlift

rhull.

uspensionassemblyontoblocking

ull.Lowerthehullas requiredtoaline

racketholeswith jointsealingcompound

htennutssecurely.NOTE:Makesure

reinstalledinthesamepositions anddirec-

eventinterferingwith ordamagingunits

steelremovablerubbingplatesare

esuspensionleversandoneachsuspension

teswhentheyaredamagedor excessively

esatany time.

pensionleverandblockit inraised

ewwhichattachesrubbingplatetosuspen-

arm.Removenutsfromscrewswhich

pensionarm.Driveout thescrewsand

plateonsuspensionarm.Install

nuts.Driverubbingplateinto positionin

ndtightencapscrewwithinternal-toothed

ck.

vehicleismadeofweldedarmor

ntotwosectionsbyabulkhead.The

catedintherearsection,thefighting com-

assistantdriver'sstationsare locatedin

TANTDRIVER'SDOORS.

hedriver'sdoors,locatedatthe front

eintothe driver'sandassistantdriver's

eismountedineachdoorona ballbear-

egreerotation.

aseleverandraisedoortofull open

withliftingtackle.Removehingepin


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W

VER

randPeriscapes

ialwasher.Removehexretainerandkey

ingdoorspring. Removedoorspringand

pinup outofdoorhinge,depressrelease

oronhulland installhingepinin

shing,andretainerwith key.Install

gadjustableseatswithremovable

ovidedforthedriver andassistantdriver

ustablein heightorinhorizontalposi-

ingsintheseatbaseassistin raisingthe

The assistantdriver'sseatcanbefolded


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eInitrurtioni

r InteriorView

cesstothe90-mmammunitionstowage

erationofseatcontrolsreferto paragraph

seatback.Operatereleaseleverand

on.Removeseatmountingscrewsandnuts

movetheseatassembly.

tondrivers'compartmentfloorand

dlockwashers.Installseatback.

LDERS.

opesarelocatedinthedrivers'com-

hichare stationaryandtwo,mountedin

be rotatedandtilted.Arotationset screw

e periscopeinposition.Theperiscope

vatethelineofvisionand canbelockedin

onthebackoftheperiscope.Asafetylock

mfallingoutif theknurlednutbecomes


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ver'sSeat

tylockback,loosentheknurlednut,

fromholder.

eriscopeinthe holder,tightenthe

esafetylock.

ENTDOORSANDCOVERPLATES.

heenginecompartmentcoverscon-

rs,twodoors,andanenginecompartment

mpartmentdoorsaremounteddirectlyto

ovidedwithshuttersunderthegrilles,and

peratedin thefightingcompartment.


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fnstruclians


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82).Removethetwobolts that

ng handles.Openbothdoorsanddiscon-

ablesatthe hingedendsofthedoors.

ecureeachof thehingeplatestothe hull.

geplatesfromthe hull.Removethecotter

gesandremovethehingepins.

182).Install thehingepinsand

positiononthehull.Usea long-nose

the hingeplatewiththeholesin thehull.

curethehingeplateand doortothehull.

olcableateachdoor.Closebothdoors,

ttheliftinghandles.

s(fig.182).Removetheengine

ngeplates(subpar.babove).Remove

atestohullandremovetheplates.

es(fig.182).Positionplates on

s.Installdoorsandhingeplates(subpar.

partmentFloorPlates(fig.186).

fromcapscrewsattachingfloorplateto

eavingoneateachcornerofthe floor

katcenterofthe plate,removethere-

rthefloorplate.

mpartmentFloorPlate(fig.186).

f floorplateandraisethe plateinposition

"Installa screwateachcornerofthe

Installthe remainingscrewsandsecure

edin thevehiclefloorbackofthe

183).Theescapedoori simportantto

shouldbecheckedfrequentlyforeaseof

oved,cleanedofdirtand rust,andits

tregularintervals.

ENDERS.

arecoveredbyremovablesand

frontandrearofthe vehicleandbyskirt

1). Thesandshieldsareattachedto the

edfasteningstudsandjoinedtothe skirt

oint. Thefendersserveasasupport for

areboltedtothehull.


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eInstructions

r Installed

DSHIELDS.Releaseallslottedfastener

dradiogroundfastenersat themiddleends

dshields.

ethreeboltsandnutsat eachend

aseslottedfasteningstudsattachingplateto

fasteneratuppercornerof skirtplate

ownfromtheslipjoint.

efrontsandshield(subpar.(1)h

ndbolts-attachingfendertodifferential

thefender.

DSHIELDS.Positionsandshieldson

andtightenslottedfasteningstuds.Install

ddleendsof shieldsandtightensecurely.

rtplatesin positiononsandshield

s andnutsateachend andtightenfasten-


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PELLERSHAFT-FIRE

TREARCOVER^EXTINGUISHER

partmentFlaar

derondifferentialhousing,install

rs.Installfrontsand shields(subpar.(1)

MENTFLOOR.

gcompartmentfloorconsistsofmetal

mmammunitionstorageboxes(fig.184).

eachother ortosupports.Theyareread-

dedbackfor quickaccesstotheammuni-

rowfloorplatescoverthepropeller shaft

pports.


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lintractions

CK.

velinglockishingedto brackets

ecompartmentcoverplate(fig.197).To

n travelinglock,pulldownontherelease

e,raisethegun.Tolockthe guninthegun

ntravelinglockjawsin ahalfwayopen

me,lower thegunintothegun traveling

elockpinfromtheright-handsideof

ingepinsfromthebracketsand remove

tionthegun travelinglockinthebrackets

pins,makingsurethelockpinhole inthe

lockpin holeineachbracket.Installthe

S.

xspring-loaded,poppet-typevalves

oortodrainthe vehicleofaccumulated

esin thedriver'scompartmentarelo-

antdriver'sseatandatthe rearsideofthe

ithoperatingrodsarelocatedon either

ingcompartment.Thetwovalvesinthe

enooperatingrods.

closedpositionfrombelow.Depress

valvestembelowknob.Drivelightlyon

eitfromknob.Removeknobandspring.

eratingrod, removescrewsattachingrod

androdretaineroutas aunit.Remove

efrombelow.

Ifdrainvalvesleakdueto corroded

byreseatingthe valveonthevalveseat.

tsurfaceofseatwithcoarsevalvegrinding

tsseatwithreciprocatingmotiontogrind

andtest forseating,usingprussianblue

valve(subpar.dbelow).

ein cage,-andblockinclosedposition

ndknob.Depressspring andinstall

grod wasremoved,installrodinrod

ngpin.Removeblockingfrombelow

mwithengineoilandoperatethevalve


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ve FightingCampartment

WAGEBOXESANDRACKS.

racksforammunitionandother

therightand leftsponsons.Boxesfor

ageareunderthefightingcompartmentfloor

eboltsorscrewsattachingboxesand

tothesponson.Toinstall,placeboxor

andinstallattachingboltsorscrews.


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Instructionf

LOORPLATE

ndEngineCompartmentRearDoor

NG.

peprotectivepaddingisattached

s'door openings(fig.179).

retainerisspot-weldedtounderside

eoldpaddingwithchiselandcleanthe

nstallnewpaddingandspot-weldto hull.

ANDPINTLEHOOK.

gshacklesareprovidedatthefront

herear.Apintlehookis mountedatthe

gatraileronly (fig.186).Thepintlehook

cketbymeansofalargehut ontheend

ethecotterpinandcastellatednutthat

e bracketandremovethepintle.To


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nthe bracketandinstallthecastellated

OR.

rygenerator(fig.13)isa Homelite

sistingofasingle-cylinder,two-cycle,air-

ectlyconnectedtoa30-volt,50-ampere

generatorwithintegralstartingwindings.

entissuppliedtothe sparkplugbyamag-

ne.Theengineis aircooledbyaflywheel

paratecontrolboxwith anammeter,

tbreaker.Thecarburetorisequippedwith

er. Thegeneratoroutputiscontrolledby

artothe enginegeneratorregulator(par.

k,abovethe generator,suppliesamixture

eneratorengineby gravity.

edon LubricationOrder(par.32),

etwomountingscrewsinend offilter.

oroughlycleanfilterindry-cleaningsol-

l,seasonalgrade,andallowitto drain

hecarburetorandinstallthescrewswith

leansedimentbowlwhenwateror

tedinthebowl.If fuelinbowlsoonagain

maybe necessarytodrainthefueltank

efuelvalveatbottomof fueltank.Loosen

tomoftheglasssedimentbowl(fig.13).

ayandremovebowl.Emptythebowland

remeshscreen,wipeit clean,andblow

stallthescreen,usingnew gasketif

wlagainstthegasketandsecureit bytight-

lveat bottomoftank.

Mixture.Ifengineruns slow,lacks

tmaybenecessarytoadjust carburetor

engineuntil ithasreachednormaloper-

veplugscrewfrombottomofstuffingbox

omturning,andloosenstuffingboxnut.

wdriver,turntheneedlevalveadjusting

oxnutclockwisefora leanermixture,and

ermixture.If enginecannotbestarted,


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Instructions

l itseatslightly,andthenbackit out1%

elfor starting.CAUTION:Neverforce

willdamageneedlevalveseat.With engine

derfull load,turnadjustingscrewclock-

tstarts tofalloff.Thenslowlyturn ad-

kwiseuntilenginereachesmaximumgov-

aturnmorefor correctfuelmixturesetting

orfromVstoVi turnforoperationinex-

dtheadjustingscrewfromturningwhile

nut.Readjustscrewsettingif enginespeed

oxnutis tightened.Installtheplugscrew

SparkPlug.Unscrewcouplingnut

msparkplug.Removesparkplug.Using

ggap.Ifgap ismorethan0.035inch,re-

nHO-14Ssparkplug.Cleantheplug ifit

onfromsparkplugadapterin topofcyl-

oredgesareburned,notifyhigherauthor-

sparkplug withnewgasketwithout

nnectconduittoplug.

eakerPoints.Removethemagneto

llernut atrearendofengine.Remove

e)to relievecompression.Turnflywheel

akerison peakofcamandpointsare wide

nditionofpointsto seethattheyarenot

orburned.Cleanthepointswitha cloth

vent,andwipewithacleandry cloth.Un-

oo badlypitted,canbedressed'withafine

thdryclothafter honing.Notifyhigher

sivelywornorunserviceablebreakerpoints.

pwitha0.020-inchfeelergage.If required,

ningthe screwwhichattachesthecontact

lowlymovethecontactawayfromor

ht dragisfeltwhengage isdrawnstraight

kerin contactwithpeakofcam.Tighten

ment.Againwipepointswithcleancloth

nstallthemagnetorotorandtighten

sparkplugand connectconduit.

utator.Wheninspectionreveals

ydirtyandthereisexcessivearcingatthe

commutator.Removeattachingscrewand

te.Cut apieceofwoodshapedto fit

atorbetweenthetwobrushholders.Place

grade 2/0,abrasivesideout,overendof

tlypresspaperagainst commutator.Be


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R

eratorMagnetoWithRotorRemoved

withcommutatorandmoveitbackand

untilcommutatoristhoroughlycleanand

ustoutof endofgenerator.Install

.Removethescrewsfromupper

er.Slidecoverupand swingitupon top

masterswitchisturnedoff.Disconnect

itch(fig.109).Removethetwoscrews

trolboxandliftout switch.Installswitch

rocedure.Installcoveronbox.

ovethethreescrewswhichattach

ver.Removecoverfrombox.Disconnect

mmeterandliftout ammeter(fig.109).


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eInstructions

firstattachittocontrolbox cover,then

allthecoveron thebox.

Removecontrolboxcover.Make

isturnedoff.Removethescrewswhich

acketincontrolbox(fig.109).Slide cir-

.Disconnectwiresfromterminalsandlift

allcircuitbreakerattachwireNo.31 to

dto theshunttotheother terminal.Com-

versingtheremainderof theremovalpro-

ratorRegulator.Removesafety

ortosupport(fig.109).Lift regulatoroff

eachterminalbox. Removeterminal

omterminals.Disconnectconduitsfrom

tor,connectwireNo.30to terminal"F",

and wireNo.29toterminal"B".Con-

ulator,install terminalcover,securethe

e.Oneachofthe mountingstudsplace

hedlockwasher,oneendofagrounding

on,theotherendof thegroundingstrap,

xternalteethlockwasher.Positionthe

installthesafetynuts.

movesedimentbowl(subpar.c

tainerwith6-galloncapacityunderfuel

ttomoftank andpermititto draindry.

llsedimentbowl.

.Raisefillercapcover.Remove

fromupperfillerneckadapter.Remove

acers.Removescrewswhichattachlower

ter.

ollowprocedureinsubparagraph11

iliarygenerator.Removecapscrewswhich

dhull(fig. 109).Slidethetankforward

ontrolsandlowerinner end,andlift

thefuel tankintopositionand

ead.Installthe attachingcapscrewswith

oweradapterandspacers.Positionthe

ckso neckiscenteredinhullopening,

ws.Connectfuelhosetovalveatbottom

nsubparagraphobelowandinstall

valveatbottomoftank.Fillfueltank


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Order(par.32).Installfiller cap,and

nerator.

DEXHAUSTLINES.Positiontheturret

cessible,andopenthe24-voltmaster

thecarburetorandfueltank.Discon-

thecarburetor.Removethebootaround

ttheflexibleexhaustline fromtheengine

e duct.Thesescrewsarethesafety-type,

afetyscrewwrench.

ASSEMBLY.Removetheattachingnuts

heauxiliarygeneratorregulatorbracket

onson.Raisetheregulatorandbracket,and

thebatterybox.NOTE:Donotdiscon-

Removethecoverfromthecontrol

wingit upoverthetopof thecontrolbox.

sfromstudsmarked"A","F",and"B"which

chedtothebottomof thecontrolbox.

ENERATORASSEMBLY.Removethe

holdtheanglemountingsof thegenerator

shions,anddisconnectthegroundstrap

.Raisethe generatoroffthemounting

ovideclearancetodisconnectthetwocon-

e controlbox.Pulltheconduitsandwires

movetheauxiliarygeneratorassemblyfrom

tothe assemblyandliftitout through

Generator.

SPONSONANDCONNECTCABLES.Lower

semblythroughtheturretwitha slingand

emovethecoverfromthecontrolboxon

up overthebox.Tipthegeneratorassem-

es fromthetwoconduitsintotherespec-

e surethewiresareinsertedfar enough

makethe connections.Thenattachthe

hten.

UTSANDCONNECTEXHAUSTPIPE.

mountingsandinstall theattachingnuts

xibleexhaustpipeflangetothe engine

s.Attachgroundstrapto sponson.

ASSEMBLY.Positiontheregulatorand

emountingstudsonthebatterybox.Install

thesponson(fig.109).


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eInstructions


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Connecttheflexiblefuelhosetothe

ubberbootover theairduct(fig.13).

nnectwireNo.29tothe"B"terminal,

minal,andwireNo.30to the"F"terminal

e controlboxcover.

NDTESTOPERATION.Turnonthefuel

closethe24-volt masterswitch,andstart

atordoesnot operatesatisfactorily,refer

ng,stopthe generatorengine,turnoffthe

openthe 24-voltmasterswitch.

NOFAUXILIARYGENERATOR.Make

O.FormNo.748,MWOandMajorUnit

cord,wheneverauxiliarygeneratororregu-

SYSTEM.

eisequippedwithacarbon-dioxide

emforusein smotheringfiresintheengine

hesystemconsistsoftwofixedfireex-

containing10poundsofcarbondioxide

ylindersareclampedverticallyinbrackets

nerofthefightingcompartmentbeneath

connectedbytubingtosix nozzlesinthe

evalvesareequippedwithremovablecon-

ratedbytwopullhandlesmountedonthe

boveand toleftofdriver's seat(fig.14),

outsideofhullat leftrearofturret (fig.

onnectionbetweenthetwocylinders

bepreventsthegas fromescapingintothe

erisoperatedwiththeother removed.

sherCylinders.Removeguard

g.184).Unscrewthecontrolheadswivel

emovethe head(fig.189).Loosenthe

ckvalveanddisconnectthetubesfromthe

inderclampboltsandliftoutthe cylinder.

uisherCylinders.Placethecylin-

heclampbolts.Connectthedischarge

ghten thetubestothecheckvalve(fig.

adon thecylinder.Installfireex-

Cable(Dual-pull-to-control-head).

.190).Unscrewthelargeswivelnut

adfromthecylinder.Disconnectthecon-

ovetheclampfromthebulkhead.Screw


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Instructions

sherCylindersandConnections

alpullmechanismanddisconnectthe

conduitoffthe upperendofthecable.

ovethelockwireand threescrews

tetothecontrolhead andremovethe

bleandpullitout ofthecontrolhead.

ndCable(Dual-pull-to-contri1-

serttheendsofthetwopull cables

cableintoa2-inchpieceofcoppertubing.

andslidethecoppertubeup totheupper

anism.Crimpeachendofthecoppertube

ldtheupper endofthetubeand twistthe

rnstosecurelyconnectthecables.

dethelowerhalfofthedual pull

rthe cable.Screwthebarrelintoplace


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chanism

heconduit.Install theconduitclamp-to

ONTROLHEAD(fig.191).Placea

ullcableandthe pulleyontopofthe dual

properslackinthecables.Turnthe pulley

seuntilthepiri contactsthestopandisin

controlbody.Withthepulleyin thatposi-

vertheVa-inchpinandconnectitto the

henremovethe pin.Installthecontrol

eheadon thecylinder.

oControlBoxon TopofHull).

removethecontrolhead frombothfire

emovethelockwireandthreescrewswhich

econtrolhead,and disconnectthecable

ttheconduitfromthebottomofthe dual

werhalfof thebarrelanddisconnectthe

cableout ofthecontrolbox.


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eInstructions

NE

DIS

dAssembly

(To ControlBoxonTopofHull).

ovetheplateandpulleysfromthe

opullhandleandthread cableoverpulley

ual pullbarrel.Pullbothcablestight

controlbox.

efertosubparagraphe(1)above.

LFOFDUALPULLBARRELANDCON-

ofthe dualpullbarrelinto placeand

barrel.

ONTROLHEAD.Refertosubparagraph

Conduit(To BracketOver

elargenutandremovethe controlhead

ylinder.Removethelockwireandthree

overplatetothecontrolhead anddiscon-

ad.Disconnecttheconduitfromthe bot-

.Unscrewthelowerhalfofthebarrel

.Pullthehandleandcableout ofthe

seat.Disconnecttheconduitatbothends.

psfromthehullandremovetheconduit.


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r Conduit(ToBracketOver

ONDUIT.Attachthecabletothepull

ethroughthe bracketabovethedriver's

oughtheconduitandpulley,and down

. Connectbothendsoftheconduitand

ull.

DUALPULLBARREL.Refertosub-

LFOFDUALPULLBARRELANDCON-

phg(3)above.

ONTROLHEAD.(Refertosubparagraph

ozzles.Usepreformedflaredcopper

nstalledwhenmakingreplacements.

esnugfittingwrenchesandholdelbowor

ectorisbeingremoved.Toremovetube

beclampsfromenginecompartmentwalls.

ketandunscrewtubecouplingnutat

ovetubeandnozzle,and disconnectthe

Nozzles.Attachoneend oftube

to tubeconnection,butdonottighten

zletobracketandinstalltube andclamps

alls.Tightenallcouplingnutsandcon-

TBLOWER.

ompartmentblowerisacentrifugal

nthedrivers'compartmentdirectlyabove

.Thebloweris drivenbya24-voltelec-

oggleswitchon thesideofthe blower.

bytwouniversaloutletelbowswhichare

y.

oltmasterswitch.Removecom-

tfromblower.Removetoggleswitchfrom

tchwiretoblowermotor.Removethree

hersattachingblowertoventilatorbase,

wertohullventilatorbaseand in-

andnuts.Connectblowerswitchwireto

oblower.Installcompartmentlightand


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ntfructians

rtmentBlawer

24-voltmasterswitch.Turnon blower

rtotestinstallation.

DWINDSHIELD.

ragraph22fordescriptionandoper-

indshield.

Wiper(fig.111).Unhookthe

eholdingscrewjust abovethewiperarm

f theshaft.Unscrewnutoncenterof

ollar.Removelocknut,rubberwasher,

twomountingboltsandnutson eachside

eofframe.Disconnecttwowirestowiper

tor.

dWiper(fig.111).Positionwiper

e,connectwirestowiperswitch,andinstall

stalllocknut, rubberwasher,andre-

hinge onendofmotorshaftand tighten

hinge.Installwiperblade.


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QUIPMENT

mationforguidanceofpersonnelre-

hisequipment.It containsonlytheinfor-

personneltoproperlyidentify,connect,

equipmentwhilebeingusedortransported

Detailedinstructionsonthisequipment

echnicalmanuals.

ON

XXXVIIIcontaininstructionsfor

mGunM3 intheGunMountM4 (T8).

munition,andcontainsinformationonthe

e90-mmgun.Forlubricationinstructions

SectionXIV.Forpreventivemainte-

orrection,disassemblyandassembly,and

ertoTM9-374.Lubricationinstructions

V.

the90-mmGun MotorCarriage

al..50HB M2mountedonapedestal

193),andaMachineGun cal..30

rontofthe tankontherightside (fig.

-mmGunMotor CarriageM36B1is

enemytanksandothergroundobjectives.

untedintheturret.Theturret canbe

nuallyorbya hydraulictraversingmecha-

beelevated30 degreesanddepressed

nin thefrontofthe gunmotorcarriage

edanddepressedmanually,andfiredbya


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ment


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pment


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ructions

ertoFM23-50forcompleteinformation

nis employedchieflyagainstenemy

dtraversedmanually,andfiredby acon-

hineguncanbetraversedindependently

3-65forthecompleteinformationon

STRUCTIONS

GUNINFIRINGPOSITION.

echcovers.

elinglock,pullreleasespring downon

evatethegun.Thegun travelinglockis

the gunmotorcarriage(fig.197).

hinturnreleasesthecradletraveling

egunin ordertodisengagethecradlelock

e (fig.196).

byturningthehandle,pulling itout,and

lockwise(fig.198).

emblybyboltingequilibratortothe

OTE:Equilibratorassemblyisused

nstalledto overcomethepreponderance

EFIRING.

Cylinder.Tocheckoillevel,de-

emovetopplugsattherear ofthecylinder.

rshouldreachbottomofhole.If oillevel

l untillevelisreached.Replaceplugs.

pecialrecoiloil.Takecarenottouse any

.Specialrecoiloilwill beusedforall

akesure itisfree fromallob-

operatinghandletolatchedposition.

eanliness.

aragraph195.


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pment

ingLack LackedPasitian

ET.

licturrettraversingmechanism

versetheturret quicklyandaccurately

permitsquickreversalforchanging

ationin eitherdirectionforfollowinga

nmotorcarriageisin motionorwhengun-

entwithtelescopicsight.Througha single

keepguns accuratelysightedonasta-

henthegun motorcarriageisinmotion.

etraversingturretbymeansofthe

hanism,makesurepersonnelareclearof

hiftleverin frontofgunnerandunder

werposition(pullleverup towardtopof

ytoslightly turnthemanualtraverse

ar mechanismtoengagegears.Turn

the"ON"positiontostart electricdrive

ck.NOTE:Itisimportantto haveturret

edbeforetraversingturret,andtolockin

ngis completed.Thepowertraversecon-

etraversepumptotheright ofthegun


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ructians


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ment

NGPEDAL\\POWERTRAVERSEVAZIMUTH

)CONTROLHANDLE(INDICATORM20

ntrols

trolsthespeedanddirectionoftheturret

ttothe right,turnthepowertraverse

totheright.To traverseturrettothe

econtrolhandleso thetopisto theleft.

peed,turnthepower traversecontrolhandle

dependinguponthedirectionofthe

urrettraverse,releasepowertraverse

otheuprightor naturalposition.Turret

stantlywithoutdamagetothefluid power

98).Ifelectricpowerfailsor if

willnotoperateduetosome othercause,

y themanualtraversecontrolhandle

mechanismtotherightofthegunner's

k.Movegearshiftleverundergear

position(turnleverdowntowardturret

toslightly turnthemanualtraverse

e gearmechanismtoengagegears.The

arethenengagedwiththeturret ringgear

ltraversecontrolhandleand itsassociate

echanisminfrontofthegunnerto release


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Documents

TM 9-748 90-MM GUN MOTOR CARRIAGE M36B1, 1945