TM 9-1350 155 MM GUN AND CARRIAGE M1 AND M1A1, 1942

7/28/2019 TM 9-1350 155 MM GUN AND CARRIAGE M1 AND M1A1, 1942

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AGE

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AGEMlAND M1A1

MENT,

ember3,1942.

schangedas follows:

essure.

uouspressuredropin eithercyl-

ds shouldbeappliedtoall threadcon-

orrepair.

orswith nitrogen.Retractvalve

topreventtheescapeofgas already

eteecapfromfilling tube,and

fig.5).Connectflexibletubeto

omakesureairrelease valveis

eopeneruntil theliftingofthe

g.11)fromits seatcanbefelt.

veslightlytoallowgas toflowinto

osenitrogencylindervalvewhen

ressureisindicatedon pressure

rtoallowequilibratorvalveto

ubeandreplaceteecap onfilling

nerhandleto openequilibrator

ssureonthe gage.Ifthepressure

enreleasevalveand allowaslow

perpressureisindicated,thenreseat

eairfillingtubeandreplaceclos-

bothequilibratorsshouldalways

airin thehead.

C1,Nov.3, 1942.)

ARYOFWARI

INGOFFICEt1942

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AGE,MlANDM1A1

,":

943.

cuperatorandproperfunctioningofoil

e(orreserveoil)* * * droptozero.

tutes1quart.Whentheregulator

contactasabove,thereiszerore-

l pumpsshouldbetestedtodeter-

srequiredto pump1quartofoil.

tecycleofthepumphandle.)The

ximumpointofmovementat60

mp.Thisdoesnotconstitutea full

ypumpingoilwillcontinueuntil

iredto pump1quartofoil has

emperatures* * * hourspreceding

ancesaresuchthatitis impossible

ctions,thefollowingprocedure

ntheprescribedmanner,for

indicated,fireoneserviceround,

ime ofcounterrecoil.

ctionssatisfactorilywiththe

ndslowcounterrecoil,firingmay

alactionisobtained.


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coilrodstuffing box,counterrecoil

odstuffingbox.

errecollrod* * * arewelllubricated.The

arytoovercomethecombinedfrictionis20Opsi.The

ow190psi orabove350psi.

essure.

anytemperature* * * intableI.

h5 F.changeintemperaturethereis

f1.2kgpersq cm(17.3psi).Therecoil

serviceablewithavariationofplusorminus

si.If notwithintheselimits,the

gotoabaseshop.

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IAGE,MlANDM1A1C2

ffiringpinprotrusion.Disassemblethe

newpin.Assemblethemechanismand

rotrudesy32inchwhenthe firingpinguide

pletely.Testadjustmentof* * * twoservice

a.ScopeofmaintenanceJ>yordnance

.Fortheproperfield maintenanceof155-mm

M3,ordnancemaintenancepersonnelmay

ble,repair,* * * baserepairshops.

ns.

A1Class3,Division185

nismM3Class3,Division186

2,May28, 1948.)

TARYOFWAR:

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RDEPARTMENT,

N,April27,1942.

E

AGEMlANDM1A1

raph

r.

s12

14

ces53

publishedfortheinformationandguid-

ancepersonnel.Itcontainsdetailedin-

isassembly,assembly,maintenance,and

nd carriageMlandM1A1,supplementary

alsandTechnicalManualspreparedfor

escriptivematterandillustrationsare

a completeworkingknowledgeofthe

TM9-1S50,July15,1941.


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AGE,MlANDM1A12-3

________________ 3

_________ 5

_______ 6

____ 7

nisundertakenforthepurpose ofde-

hemateriel;to findoutifrepairs or

andwhatprecautionsarenecessaryto

insuchserviceableconditionthatit will

ofall inspectionandmaintenancewill

nBook,O.O.Form5825.Instructions

kareoutlinedtherein.(See alsoOFSB

linspectiondescribedherein, aroutine

asoutlinedin TM9-350.

oolsofaspecial natureareusedinin-

aterielMland MlAlbyordnancemain-

reincludedintheset ofspecialrepair

SNLD-14.

thcontents. Figure2showsthechest

Thisapparatusis usedintestingthe

genpressureandfrictionof recoiling

edas follows:

3548)isusedwhenthe oilindexof

atesthatoil isrequiredfora fullreserve

X1B)isused whenreplenishing

37652)isusedtoestablisha full

mechanismwhentheoilhas beenreleased

ystem.

beissuedinthe futuretoreplacetheabovepump.

lverelease(A1001)isusedwhen

awthereserveoilfromthesystem.

B5757)isusedtomeasurethe quantity

stem.

167298)isusedto loosenortighten

uts.


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AGE,MlAND'M1A13

ster,withcontents,complete.(!)

hest(fig.3) isusedfortesting theac-

suregage(C6385)withthemaster pressure

entconsistsofthetester,mastergage,

ptersandspare partsusedtherewith.

atubewithaconnectionateachend

gages.It isfilledwithliquidwhichcan

ER-B748-,//

etester.

ymeansof anoperatingscrewpressure

tobothpressuregages.

getester,clampitin aviseinthe

testerwithoil, recoil,heavy.Attach

oone endofthetesterand theservice

end. Applypressurebymeansofthe

nections,complete.Thepressuregage

susedin testingforpressureinthe


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E

eandconnections.

n.Therecoilpistonscrewjack(fig.

nterrecoilpistonrodtotherear when

smforpressure.

stonscrew.

rfillingtube (C69285)isusedin

reinequilibrators.

e.Theflexibleairfillingtube(C419)

the airfillingtubewhentestingthe

ressures.

daverageaccuracylifeinfullservice

Ml andM1A1is2,000rounds.Guns

dat approximately10percentand90


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AGE,MlAND'M1A14^5

averageaccuracylifeinroundsfired,and

0percentof theoriginalestimatedlife

eirservice.Theyshouldalso bestar-

ctordeemsitnecessarybecauseofdoubtful

esshowsignsof unusualwearorother

goftheboresofcannonbeforestar-

star-gagingtheseguns,thegreatest

twhichstar-gagemeasurementsareto

fectsoftheboreofthe gunrequiring

plasterofparisshouldbe usedifprac-

surfacethangutta-perchaandthusgives

ment.'

edforan extendedperiodortobe

speciallyifthevoyageis overwater,the

rust preventiveasprescribedinTM

tiontheboremustbe coatedwithoil,

ratureslessthan32 F.andSAE30for

n32 F.

General. (1)Therecoilmechanism

index.

plenisher.

ssednitrogen.

ckings.

desandcradleways.

therecoilmechanismdependsupon

whichis indicatedbytheoilindex

herpiston.It shouldbecheckedas

ecoilingpartsandthepropernitrogen

kedbythemanometertest.(Seepar.6.)

oil,thereserveoilshouldbechecked

entocheckthenitrogen pressureand

ts.Thenif thereserveoil,pressure,

rrect,therecoil mechanismisoutoforder

theChiefofOrdnancefordisposition

tempted.

vethefillinganddrainplugs(B155851)

mineforleakageofoilthroughthevalves.


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GE,MlAND'M1A1 5


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NCE

lcylinderfronthead(fig.9)andcheckfor

errecoilpiston.Examinethefaceofthe

rhead.Checktheoilindex,eachendof

chendofthe replenishercylinderfor

kage.Pistonandstuffingboxpackings

untofoil whichinsureslubrication.A

esnot exceed3dropsperminuteim-

tconsideredserious.Aleak atany

oilmechanismshouldnot,however,exceed

eratorcmdproperfunctioningofoil

(orreserveoil) isatermappliedto that

rmallyseparatesthefloatingpistonfrom

ssednitrogenactstoputpressureon the

oil betweentheregulatorandfloating

nentscomeincontact,furthermovement

evented,sopressureontheoil willdrop

lreserveconstitutesthevolumecor-

etheoil indextravelsbetweenitsextremes

eis1quart.Whenthe regulatorand

ctasabove,there iszeroreserveoil

g,an incorrectindicationofthe

begiven.If thegunisfired witheither

erveoil,damagetothegunwill result.

ntionshouldbegiventotheoil index.

easingthereserveoil,note iftheindexis

dinganddoesnotmoveits fulldistance

eproceedasfollows:Removethefilling

fig.10) fromtherecuperatorcylinder

rtinits placetheoilrelease(A1001).Draw

xstopsmoving.

andassemblethe adapter(B158805)

screwfiller(oroilpump)to theadapter

emovingallairfromthe linewhenforcinginthe

ngslightlyoneconnectionintheline,letting the

bubblesappearatthejoint,then tighteningthe

untiltheoilindexstarts moving,thenforcein

to100strokesof theoilpump(M2A1))whichis

adapterandreplacethe fillinganddrainplug.


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AGE',MlANDM1A15-6

ilcylinderandfunctioningofthere-

operationofthereplenisher,insertascale

replenisherpiston guideagainstthe

eleaseoilbyscrewingthefilling anddrain

lcylinderdrainhole.I fmovementofthe

ace,itisworkingsatisfactorilyasa gage

ecoilsystem.

enisherpistonwithrespecttothe

rcylinderis usedtodeterminetheamount

llingoftherecoilcylinder.Normaldis-

stonfromthe rearfaceofthereplenisher

hes).Thispositioni ndicatesthata

esentinthereplenisher.Thepositionof

uldbecheckedandwhenthe pistonis10.2

therearfaceofthe replenisher,oilshould

lcylinderbeforefiringis continued.When

movedinto 20cm(7%inches)ormore

eplenisher,oilshouldbeadded.

Ifnitrogenleakspastthefloatingpiston

sputteringandfoamyappearanceofthe

omthemechanism.

rpose.Thepurposeofthemanometer

ssure.

e floatingpiston.

edfrictionofthecounterrecoilpiston,

uffingbox,andrecoilrodstuffingbox.

emperaturestheoilinthemechanism

usesgreaterfrictioninthepistonand

erraticactionoftheoil whenpassing

gorifices.Thereforenitrogenpressure

hthemechanismatlowtemperaturesare

mustbe testedincoldweather,the

eplacedin aroomwarmedtoatleast

ingthetest.

heguninbatteryat0 elevation,remove

romthereplenisher.Insertthefilling

ddrawoff theoilinthe replenisher.Remove

release.

rain plugontherecuperatorcylin-

connecttheoil releasetotheendof the

offthereserveoilintoa suitablereceptacle.

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NCE

echanismwillcausetheoiltospurt outinastream.

entheoilindexrecedesbelow,thesurfaceof the

rinthereserveoil drainedfromthe

cordofthetemperature.Keepthether-

is shouldrepresentasaccuratelyas

nsidetherecoilmechanism.

coilcylinderfrontheadandattachthe

7336).Bymeansofthejackmovethe

10.2cm(4inches)tothe rear,permit-

ughtheoilrelease.Disconnectthegun

mbyremovingthenutsfromthe recoil

B105455)inthefilling anddrainhole

r.Attachthepressuregage(C6385)to

avingthisconnectionslightlyloosefor

onnection(A141612)tothe pressuregage

nnection.Pumpslowlyto"purge"theline

s.

coilrodstuffing box,counterrecoil

odstuffingbox.Backoutthejackscrew.

orcingoil intothecylinders.Whileboth

enthecounterrecoilpistonisbetween3and

osition,takethe gagereading.While

gagelightly toovercometheeffectoffric-

sreadingrepresentsthecombinedfriction

x, counterrecoilpistonandcounterrecoil

oteof thereading.)Obtainthreeuni-

errecoilrodasufficientnumberoftimes toinsure

adingsarepracticallyuniform.Thisisimportant

scannotbeobtaineduntilthe packingsarewell

essurenecessarytoovercomethecombinedfriction

ould neverbebelow142psinor above355psi.

yuntilthe rodsareinbatteryposition

oving(5mmbeyondthefaceofthe head),

.Thisreading representsthenitrogen

istonfriction(AP +F).(Makeanote

ectionsufficientlytoallowtheoilto

thegagehandasthe pressuredropsand

ehandbecomesstationary.Thisreading

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AGE,MlANDM1A16

essureminusthefloatingpiston friction

urementstocheckresults.

essure.(1)Thenitrogenpressurein

fthesumofthe readingsobtainedinc(1)

(7)133.5kgpersq cm

(8)120.5kgpersq cm

er254.0kg persqcm

2 127.0kgper sqcm

anytemperaturemaybe foundbyre-

sandpressuresin tableI.It willbenoted

eintemperaturethereisacorresponding

m(14.62psi).Therecoilmechanismis

thavariationofplusorminus 6kgper

hinthelimits,the recoilmechanism

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ANCE

5.2psi.ThevalueofF shouldnotbe

psi.

vebeenassembledforaconsiderableperiodoftime

hisisdue toabsorptionofoilby therubberpackings.

(7)133.5kgpersq cm

(8)120.5kgpersq cm

omthe

qcm

2 6.5kgpersq cm

ixmtonormal.(1)Removethepump

rveoiltodrain.Removetheadapter

rainvalyerelease(A1001)and dis-

einplaceoftheadapter(B105455)an-

andinsertinthe fillinganddrainplug

ter"purging"forceoil intothecyl-

rtstomove.Thenapply100 full

ceapproximately1quartofoilintothe

nnectionsandassemblethefillingand

kscrew,havethescrewall theway

dtopreventthe endofthescrewfrom

derwall.

B158805)withoilpumpand connec-

ereplenisherandforce inoiluntilthe

ximately5%inchesbelowthefaceofthe

esthereservefortherecoilcylinder.

ndassemblethedrainplug.

matelyevery6months,thefollowing

e.

essure.(1)Placethegunat 0 or

ehexagonheadplugontheair filling

acethe airfillingtube(C69285)(fig.5).

ytoallowtheescapeof anyairwhich

ureagainsttheplugdueto afaultyvalve.

ve,theequilibratorpressuremustbedis-

edorreplaced,andtheequilibrator

opener(B128853)onthe fillingtube

valveis closed,theteecap(A130646)is

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AGE.,MlANDM1A17

ageisattached,beforeassemblingtothe

air fillingvalveopenbyscrewing

Thepressureinthe equilibratorwill

ge.The gagereadingshouldcoincide

leforthetemperatureandthe position

Itshouldbe notedthattheultimate

sureisthe wayinwhichthemechanism

atedbytherelativeforcesonthe ele-

houtthefullrangeofelevation.

ER/PLUG-AI96H-

ureatdifferenttemperatures

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ANCE

dicatesalossin pressure,soapsuds

readconnectionsoftheequilibratorto

heconnections.Iftheconnectionsare

icateslossofpressure,thegreaseseals

y,andtheequilibratorshouldbe re-

seshopforrepair.

airinthe.head.Withthegun atzero

(A19611,fig.11)fromthe rearheadof

omaximumelevationandreplacetheplug.

ARParagraph

s12

14

nceinstructionsaredescribedinthe se-

intheassemblyof thecarriageproperandthe

blies.

rtstobeassembledmustbe freefrom

must besmoothedbyuseofa smooth

stone.Bursandsharpedgesmustbe

ntactshouldbecoveredwithoil,engine,

ad properlyafterassembly.Bolts,

ght andsafeguardedproperlywithlock-

ewsdrilledforlockingwires mustbe

erremovingtheoldbushing removeall

d aroundthehole.Fitthenew bushing

ntothehole.Lubricatetheexteriorofthe

aceabolt withwashersonbothends

ehole anddrawthebushingintoplace

bushingis insuchapositionthat the

befollowed,placeapieceofhardwoodagainst

toplacewithahammer.Reamthe

afterassembly.

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GE,MlANTCM1A19

l.Lubricationfacilitiesmustfunc-

interruptedpassageoflubricant.At

antifrictionbearingsmustbepackedfrom

withtheproper lubricant.(Seelubrica-

3.)Lubricationfittingsmustbepainted

I,

THSiBts[

nism

uidefor155-inmgunMlandM1A1.

ylocated.Whenassemblingoilretainers,

figure andplacethesealingelementof

nspecified.

mperatures.ForoperationatArctic

ationsfromthelubricationchartsmustbe

ectedtosustainedtemperaturesbelow

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useoil,lubricating,foraircraftinstru-

whereveroil,engine,SAE10 orSAE30,

nthelubricationchart. Underlikecon-

ytorelubricatethevehiclewithgrease.

egrease,O.D., No.0,specifiedinthe

M

M

GM

W

.

ort

0r

arings

arings

w

gs

BER

uideforbogieciirrinyeandlimber.

ytoforceinthe prescribedgreasewith

ithoutanypreliminaryremovalofold

byordnancemaintenancepersonnelat

n.Thefollowingpointsarelubricatedby

rsonnel:

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AGE,MlANDM1A19-10

nion.Bearings,bogieandlimberwheel.

Bearings,brakecamshaft.

earGears,drumbrakeandpinion

t.Pins,brakeanchor.

mwheelYoke,clutchoperatingmechanism.

e.a.Trailsto'bottomcarriage.As-

ottomcarriagebymeansofthetrailpins

Locatethetrail pinsonthepins

securetheassemblybythe threaded

ttom.Locktheplugsby meansofscrew

eoilwells inthetrailpins arefitted

dwithlubricant.

e.Movethebogieintopositionover

ssemblethepins(A19489)(fig.19) inthe

end ofthebottomcarriage.

caniage.Assemblethe13heavyBelle-

.21)in theseatsprovidedinthe half

dofthe gun.Assemblethe7lightBelle-

herear halfcircle.Thismethodof

dtocompensateforthemuzzlepreponder-

thetop carriagesupportingrollerbear-

he bottomcarriagecircularliner

shing(B105024).Placethetopcarriage

carriageandassemblethepintle(C7187).

g(A171739)andthepintle bolt(C68849).

hteningtheboltfrdm thebottom.

dthepintle boltcover(B158579)andthe

ringplug(B158125).Assemblethetwo

3060andC73061).Adjustthepintlebolt

essary.010-inchclearancebetweenthetop

otopcarriage(seefigs.22 and23).

ngthebearingswhileclampingtoinsure

erlyagainstconerib. Heatthebearings

*4hoursto facilitateassembly.Fill

hgrease,O.D.,No.0. Assemble

0)onthe left-handendoftheelevating

heelevatinggearcoverassembly

ear(C7143)inpositionandinsert theshaft

ethegear onthethreekeyson the

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AGE,MlANDM1A110

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E

g(B104910)on therightendofthe

BBRX1AS)andtheelevatinggear

914).Assembletheelevatingmechanism

geandsecurethe cover(C73312).

74750)isprovidedfordisassemblyoftheshaft

sible replacementofshaft,gear,orrollerbearings.

eased,capsandnutsremoved,andtheshaft pushed

ontactstheleftroller bearing.Thegearpuller

eadedholesinthewebof thegearandforceis

screwcontactingtherightendoftheshaft.The

earingcantherebyberemovedfromtheshaft.

agepintle.

totopcarriage(seefigs.24and 25).

734)tothetop carriageandattachthe

eworm(C7205).Assemblethehand-

rriageandthe handwheelshafttothe

e figs.26to29,incl.).Assemblethe

ntheright andleftcaps(D5788and

placetherollerbearingsonthecradle

ringsbyinsertingthetaper sleeves

henuts(B105093)withthewasher

rightandleftcaps(B105202and

Notethespaceprovidedfortheexpansion

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AGE,MlAXDM1A110

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npuller.

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GE,MlANDM1A110

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GE,Ml AND'M1A110

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GE,MlANDM1A110

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GE,MlANDM1A110

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GE,Ml ANT)M1A110

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AGE,MlAJSTDM1A110

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TNANCE

e cap(B105202)andtheouterfaceof

ght-handtrunnion.Assemblethecradle

edtothe undersideofthecradle)and

s(D5788andD5782),respectively,tothe

eguides(C7255)tothecaps(figs. 26

ndtopcarriage.Oneendofeachof

uredto thecradleattheequilibratorcon-

theequilibratorare attachedtothe

rriage.Securethe cradlelockconnection

elockonthebogie,therebylockingthe

.Placethechargedequilibrators,with

d,intheirproperpositionandadjustthe

atorlocksuntilthe endsoftheequilibrators

eequilibratorpinssecurelyandremovethe

tethegunslidesandcradleguides

elockedintravelingposition,slidethe

takingcareto havethegunslidesin

cradleguides.Securetherecoiland

ecoilmechanismtothegunlug bymeans

ecounterrecoilrodnut.

Itwillrarelybe necessarytoremove

mortopcarriageexcepttocorrectmalfunc-

mortop carriage.Asthegunweighs

essarytoprovideliftingjacks,suitable

rsbeforesuchdismountingisattempted.

cking,andtimbersareavailable,select

owmovementofthe primemoverafter

sition fordismounting.

yandunlimberasforchangingto firing

einfiringposition,as outlinedinpara-

ptforthe trailswhichshouldbespread

l.

evation.Placesuitablecribbingunder

totakethestrain offtheelevatingmech-

wntotherear.Retractthegun into

softheprime mover.Blockasmaybe

nout ofthecradle,takingprecautionsnot

adlewaysasit.is beingremoved.

tors.Assembleequilibratorlocking

63)(fig.30)onthe bodyofextended

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AGE,MlANDM1A1 12

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AGE,MlAND'M1A112-14

bratorvalvehead(C59232)andthecase.

69096)untilthetensionof theequilibra-

removetheequilibrators.Disassemblyof

pecialfacilitiessuchasare availableat

Erectagarrisonginoranimprovised

onsin suchapositionthatit willbe

ecaps(B105202andB105201)(figs.26

ngcaps(D5788 andD5782)tolift the

thetopcarriageandtolower itsafely

cross-sectionview.

age.a.Ifitbecomesnecessaryto

ackupthetrails andbottomcarriageuntil

vetheplug (B158125)(fig.20).

derthebottomcarriageandremove

gtocrawlunderthecarriage.

exposetheheadofthepintle bolt

tleboltcover(B158579)andthenut

whenyou trytounscrewthenut,

dof thebolt(C68849).Removethetwo

1).Attachthepintleremovertool(fig.31)

)up throughitssocketuntilit is

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ENANCE

rcpiniongear.Blockthe.pintle inthis

agecarefullytothe rearuntilthetop

omcarriage.Thenplacethegarrison

ckin positionandliftthetop carriage

a.Toremoveseizedbreechblock.The

dbyexpansionoftheobturator,orthe seiz-

ofthebreechblockcarrierorin thebear-

aft(C70426).Unscrewthefiringmecha-

hardwoodor abarofsoft copper

echblockorbreechblockcarrier.Giveit

yhammeratthesametimepullingdown

ever.If itstillcannotbe openedtrya

berthroughtheboreas arammertoshock

eechhasbeenopened,examinethe

kcarrieraswellas thoseofthebreech

ryrepairs.Ifthethreadshavebecome

hthembyfilingand polishing.Scarsand

e ofthethreadscanneverbe removed

ngerofdestroyingtherelationof the

metalbyfilingandpolishing mustbe

ienttoremovethe raisedmetaland

rofthe threads.

firingfailuresthatareattributedto

sedbymalfunctionofthefiring mechanism.

.Disassemblethemechanism,clean

ry-cleaning,wipedryandoilwithoil,

ffiringpinprotrusion.Disassemble

examinethefiringpin.If brokenor

withanew pin.Assemblethemechanism

protrdues%2ofan inchwhenthefiringpin

pletely.Testadjustmentofthefiring

ngtwoserviceprimers.

e obturatorspindleplug.Thiscondi-

firedprimertoburnout. Incertain

remainin theprimerseatafterejectionof

ecasesblow-outmayoccur.Unscrew

Toremovethe spindlegasketusea

ydiameterslightlylessthanthe inside

adsofthe spindleandatit witharun-

areshouldbetakennotto removestock

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AGE,MlANDM1A115-16

.Replaceusedspindlepluggasketwith

knessand replaceusedspindleplugwith

gainstthe gasket,compressingitsuffi-

drelationbetweenthefiring pinandthe

ntholein thegaskettosize.

eat.Smoothbyfilingandpolishing,

en correctingthesameconditioninthe

eventbushing.Removetheeroded

orcounterbore.Besurenottodestroy

orspindle.Insertanewbushing,screw-

flush withthespindle;drilland

e rearend.Itmaybe necessarytoweld

a pieceofdrillrodto drilltheventhole

pindleventbushing.

s.Correctbyfilingorscrapingin

wingprocedure:

oximatelyhorizontalposition,placea

emuzzleendon thelowersurfaceofthe

dgeis notavailable,asingle-sided

gedagainstthetopof theborewithwooden

emustbeexactlyinthemiddleof thebore

edbythewedges.

ner'squadrantontheprotrudingend

ngthe guninanexactlyhorizontal

uadranttothelevelingplatesandre-

towardwhichthebubblemovesuntil

ctly.Maintaintheoriginallevelat right

tion.

urfacelargeenoughto coverboth

oatedwithprussianblue orredlead

gh spotsandinsuretheentire surface

newiththeother.

a.Scopeofmaintenancebyordnance

Fortheproperfieldmaintenanceof155-mm

ordnancemaintenancepersonnelmaydis-

ir,andreassembleanypartofthereplen-

linderfronthead,thefillinganddrain

ndtheoil indexpackingasdescribed

olutelyforbiddentoremoveanyother

ngboxes.Undernoconditionswill dis-

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GE,MlANDM1A116

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E

repairworkofanydescriptionbeper-

ecoilmechanismexceptbyordnance

ssemblyofthemechanismrequiresspecial

bleatbase repairshops.

enisher. (1)Releasethereserveoil

mbletheguard(C72622)andtube

ereplenisher.Removethescrewre-

hecradle.Fit theassemblybeneaththe

thefrontend up.Beardownonthe

167259)(fig.34)withthe drillpress

screwedfromthecylinder,sothatexpansion

agethethreadsofthecylinderor guide

dfromthecylinder.Withdrawthepiston

pistonextractor.

derbymeansofthe replenisherpiston

ethepistontodetermineif itisnecessary

episton isheldin aviseforreplacing

rjawsmustbe usedinthevise.

ailable,thefollowingprocedure

assemblethereplenisherpiston,there-

smounted,removethe6-mmlockingscrew

nguide.Screwtheshort threadedend

erpistonextractorfullyintotherear end

dscrewthe washerandnutagainstthe

efacespannerwrench,unscrewtheguide

ortit whilebackingoffthenutofthe

thespringtoexpanduntil theload

heextractormaybeunscrewedfromthe

nd springtakenoff.Reversetheguide

rendofthereplenishercylinder.Pass

hewasherandagain screwitintothe

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AGE,MlANDM1A116

erpiston.Operatetheextractornutto

rendofthe cylinder,usingwoodenblocks

guide sufficiently.Removetheextractor

erpistonnut sufficientlyuntilthecom-

kingis relieved.Neverremovethepiston

pttoenter itwiththenut drawnup

erpistonguide,especiallythesmall

ingtheextractionofthe piston.

nderwallis oftendamagedbylifting

dbe placedsothattheywillnot bear

l.Thereplenishercylindershouldnever

o jarthepistonwhenit isstuck.

sher. (1)Assemblethefiller(A158878),

(A175527),andspring(B155627);and

ghtlyagainsttheBellevillespring.Coat the

e,O.D.,No.0.Put thepistonheadintothe

keuponthe nutuntilit bearsagainst

Push thepistonintothe cylinderuntil

heendof thecylinderbore.Placethe

reof thecylinderandinsertthereplen-

isassemblybeneaththespindle ofa

espring untilitis possibletoscrewthe

hethreadsofthecylinder.Whenthe

s incontactwiththecylinder,assemble

X1BF).Attachthereplenishertothe

plenisherpistonis105-mm(4.13

malworkingzoneoftravelisfrom the

70-mm(14.56inches)fromtherearend.

replenisherpistontherecoilsystem

dallowedtostandfor10 hours,after

will beremovedtonotetheamountof

ston.Clear oilindicatesaleakandre-

lacementofpackings.

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AGE,MlANDM1A1

eLists.

ndlubricatingmate-

lSNLD-24

heavyfieldand anti-

nclatureListsareas

atelistofSNL's is

ncePublicationsfor

s.

ndlubricatingmaterials.TM9-850

TM9-350

procedure,materielin-

100

weldingOFSB5-2

thehandsof

tar-gagingequip-

pressions(now

oSNLN-9)_._ TM9-1860

orm5825

roofofgunsand

ivision89

3,Division89

ass3,Division 185

1Class3,Division185

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nismMlClass3,Division186

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TARYOFWAK:

lsseeFM21-6.)

dentofDocuments,-Washington,D.C.

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