TM 9-1350 155 MM GUN AND CARRIAGE M1 AND M1A1, 1942
Transcript of TM 9-1350 155 MM GUN AND CARRIAGE M1 AND M1A1, 1942
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E
AGE
Publ
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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,MlA2STOM1A15
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CE
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GE,MlANDM1A15
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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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E
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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npuller.
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GE,MlANDM1A110
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CE
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GE,Ml AND'M1A110
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GE,MlANDM1A110
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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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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
Class3,Division188
TARYOFWAK:
lsseeFM21-6.)
dentofDocuments,-Washington,D.C.
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