Allis-Chalmers Model G Manuel de service

TT-.-I!_.MODEL "G" TRACTOR-Allis--Chalmers Mfg. Co.d> - TRACTOR DIVISIONMILWAUKEE, WISCONSIN-U. S. A..;~#CU 279 Xl-~"..•...,. )

RemovalDRAWBARnut from the drawbar pivot pin.Remove the four capscrews attaching thedrawbar guide to the cylinder block anti re-move the guide. Remove

EU':CTRICAL SYSTEM...•RED TR.CUTOUT RELAYHEAD LIGHTCONNECTORTAIL LIGHTWIRING DIAGRA~,-"--.j-}-III - Discharge side of anlmeter to cutout.HZ

IGNITION SWITC Hr!-nwhich is cut into or out of the circuit andlimits the arnoWlt of electrical current allowedto pass ttnough the field coils of the

STARTER.;'Removallnspectio n. .See the general section of the service mimualfor details on the starter. The starter shouldbe repaired only by an

FAN BELTRemovalIiLoosen the generator brace and move thegenerator closer to the cylinder block. Re-move the upper right capscrew and spacerattaching t

DISTRIBUTOR••..• -.-- .-t---,..,.::.. ~.: '. -: '. -.- ..CONDENSOR--'-- ---' -_.. ..~..- ...•... ~--- ..',~!.~;~,DISTRIBUTO

rrOrrTIMING GEAR COVERRemovalRemove the hood and hood support. Dis-connect the carburetor link rod and the gov-ernor spring. Remove crank jaw. Use twc

the screw should be turned in slowly untilsurging is overcome. If the surge screw isturned in too deeply, it will increase ther.p.IX1oat which governo

RemovalOIL SUMPoughly and inspect the screen for brokenmeshRemove the drawbar guide and swing thedrawbar to one side. Drain the oil sumpand remove the

CRANKSHAFT. ,PUlLEYPULLING CRANKSHAFT GEARRemovalRemove the engine from the tractor. Re-move the clutch and flywheel. Remove thecrankshaft fan pulley

·. ~.ALLIS-CHALMERS MANUFACTURING CO.Milwaukee, WisconsinAllis-Chalmers Model "G"Allis-Chalmers HD19HALLIS-CHALMERS MODEL "G"Allis

CRANKSHAFT OIL SEALSTT!rthe bronze washer •• 002" and .008" shimsare used between the steel thrust washer andthe shoulder on the crankshaft

per square inch and can be obtained by ad-"_"",;justmentof theoi! press~e reliefvalve-. < '00- _._not atter.1pt to adjust low o

rIOIL PRESSURE RELIEF VALVETRemovalThe oil pressure relief valve is located on theflange of the cylinder block near the oil pump.It may be removed by

driven from the cylinder block.is necessary. ~Always use a suitable driver.The valve face and seat angles are 450• Theseat width should be approximate

marked on the piston top.The connecting rod as used in production ismarked both on the rod dnd the cap on thecamshaft side. 1£the standard bearing doe

ENGINE-OILING SYSTEM ,l'0-The Model lti" engine use. regular sradelubricating oil of the followinSspecifications:For heavyduty servic~ above

.•...journal. This hole lines up with the two notchescut in the camshaft thrust plate allowing twospurts of oil from each revolution to reach thethrus

_',CLUTCH THROWOUT BEARINGS. FORK-; : -ClUTCH ADJUSTING NUTRemovalSeparate the engine from the clutch housingand remove the pedal rod from the pe

FLYWHEEL AND STARTER RING GEARTTOTT)RemovalSeparate the engine from the clutch housingand remove the clutch. Remove the starterring gear fr'om th

REAR WHEEL & AXLE HOUSING' .. :"; .. ;..RemovalDrain transmission to pre_ve!1!C)ilfrom con-tacting brake bands. Remove the-rear-whee!to

1-,, j,'-"'""SERVICE MANUAL FOR THE tv«:>DEL''0'' TRACTORThe {'ngine for the model "c'·

lA new Rear Axle Kit 80090Zhas been providedfor service. It consists of the axle, a new oilseal 800906, a bearing spacer 800904, ann:1brake drum space

"," ~NOTES.'!"

-0~~> LOCK NUT·.l~OPERATING LEVERBRAKESCheck the lining for wear. It must be re-placed when worn down to the rivet heads.Check the brake lever cam

•. '" 0·.··FUEL TANKRemoval.Remove the hood,fend~~s' ~d seal'. Shut offfuel valve under tank. Remove the-seat -andthe fuel line. R

TT C)TTTITIDIFFERENTIAL.•PINION 1HIUS'f WASte~: SlOfGEAI«? ~ ~ ~j-~ •..•.---.~SHAfTIEAlIHG CAIII9')/TTIRemovalDrain the transmission, remove

SPECIAL LOW -GEARRemoval chipping. Check the shifter shaft for wear atthe detent notches.I'-.7This amount is a noticeable drag, but mustnot be so

-(j'..~\!wear and chipped or rough teeth. Check theshafts for worn splines.AssemblyPlace the reverse idle gear, bearings andshaft in the case fir

GEARSHIFT MECHANISM-_THIRD SPEEDornNT &AU & SPRING-- .J 11 rn-.U,JIV!I-;LEVER GUIDE PINSLEVER GUIDE_RAIL'. :~WASHERSTHIRD SPEED SHIFT RAi

-0BEARING RETAINERSTEERING GEAR -JACKET TUBETUBE CLAMPADJUSTING SCREW!(J\COVER-_~1\BALL ARMRemovalRemove the steering gear ball arm and thetwo screws

FRONT AXLE A~D· SPINDLES--._--oRemovalRaise tractor and block securely. Removethe drag links from the steering arm. Re-move the key and n~t f.rom the

MODEL "G" TRACTOR INDEX(' .·SUBJI-.CTAIR CLEANERA t-.1t-.tF: Tl:'. RBATTF.RYnf-~l.T PULU-;: Y. BRAK~:SBRAKf>PFDAL AD] USTMENTCA

-0---0-37

'1'{~ SPRINGVALVE COVER~: L~·rVALVE LEVER"" ~. SCREWDETENTSPRING~~ OIL SEALN~/I .e'"I"":rCONTROlA VALVEWI . CO

GeneralMODEL IIG" HYDRAULIC PUMPPwnp Disassembly/)The Model "G" Hydraulic Pwnp is a gear typepump and develops approximately 900 P.S.I.

The relief valve spring should measure 3.131.16";'.~Us_ sealer on outside of needle bearing. Belong - free length. If 3/16" short it sh

BELT PULLEY (OLD STYLE)RemovalRemove the four capscrews attaching thepulley assembly to the clutch housing. Re-move the cap from pinion shaft and remo

Allis-Chalmers "GU,.

SPECIFICAI1Ul""ENGINF:F:NGINF.CRANKSHAFT1.999 to 2.000.0015" to .00l",0001",003"Adjustable.OOZ" &. ,DOh".0

OIL PUMPENGINE SPECIFICATIONS (ContI d.)PISTON RINGS7-1/2Clt, per min,.001" to' .002".005".004".004".002" to .0035&

CHASSIS SPECIFICATIONSLocation Left SideSpeed 1950 at 1800 of engineRatio Pulley to Engine 1.08 to 1High Idle 2275 R.P.M.~ize 6" dia. 4" fac

F:':'NGI~~HOODAND HOODSUPPORT-0RemovalThe hood and hood suppc·rt IndY be' removedtogether if the, capscrcws, attaching the hoodto the r

AIR QUT1ET TUBE DRAIN16\,<:u.T~~";~....--- .•.._-,•... ~'Check the air inlet pipe, air outl·~t t.ube drainfilter and air cleane