Deere VEHICLES

JOHN DEERE1972-1982

400 CCW500 CCW

400 CCW500 CCW600 CCWJDX4 KohlerJDX8 CCW

300 Kohler400 CCWJDX4-Special CCWJDX6 CCW500 CCW600 CCWJDX8 CCW

300 Kohler400 Kioritz600 . . . Kioritz800 KioritzJDX4 KioritzJDX6 KioritzJDX8 Kioritz

300 Kohler400 . KioritzCyclone340 .KioritzCyclone440 .KioritzUquifire340 .KioritzLiquifire440 .KioritzJD295/S KiofitzJD340/S Kioritz

300 Kohler400 KioritzCyclone340 .KioritzCyclone440 .KioritzLiqulfire340 .KioritzLiquifire440 .Kioritz

Spitfire340 ..KohlerCyclone340 .KioritzCyclone440 .KioritzLiquifire340 .KioritzLiquifire440 .Kioritz

Spitfire Kohler

Trailfire340.. FireburstTrailfire440. .FireburstSportfire . . . .FireburstLiquifire Fireburst

Spitfire FireburstTrailfire 340. . FireburstTrail fire 440. .FireburstSportfire . . . .FireburstLiquifire.... .Fireburst

Spitfire FireburstTrailfire 340. . FireburstTrailfire 440 . . FireburstSportfire . . . .FireburstLiquifire Fireburst

KEC340KEC440

KEC340KEC440KEC440K295-2AX440/21

K295-2AX4KEC340/5KEC340/5KEC400/22KEC440/5KEC440/5KEC440/22

K295-2AX4KEC340/5KEC440/5KEC440/22KEC340/22KEC400/22KEC440/22

K295-2AXKEC340/22AKEC340/22AKEC440/22AKEC340/23LC

339CC436CC

339CC436CC436CC292CC438CC

292CC339CC339cc399CC436CC436CC438CC

292CC339CC436CC438CC339cc399CC438CC

292CC339CC339CC438CC

; 339CCKEC440/23LC 438ccKEC295RS/2KEC340RS/2

K2952AXY340/22A340/22B440/22B340/23ALC440/23ALC

K340-2FAKEC340/22BKEC440/22B

295CC339CC

292CC339CC339CC438CC339CC438CC

338CC339cc438CC

KEC34Q23ALC339CCKEC44Q23ALC438CC

K-340-2FA

TA340ATA440ATA440BTC440A

TB340-ATA340-ATA440-ATA440-BTC440-A

TB340-ATA340-ATA440-ATA440-BTC440-A

338CC

339CC436CC436CC436CC

338CC339CC436CC436CC436CC

338CC339CC436CC436CC436CC

WalbroWalbro

WalbroWalbroWalbroWalbroWalbro

WalbroBendixBendixWalbroBendixBendixWalbro

WalbroBendixBendixWalbroWalbroWalbroWalbro

WatbroWalbroMikuniMikuniMikuniMikuniMikuniMikuni

WalbroWalbroMikuniMikuniMikuniMikuni

MikuniMikuniMikuniMikuniMikuni

Mikuni

MikuniMikuniMikuniMikuni

MikuniMikuniMikuniMikuniMikuni

MikuniMikuniMikuniMikuniMikuni

1972WR7-5WD8-5

1973WR7-5WD8-5WDWRWD

1974WDA3116121612WRA3116121612WRA31

1975WDA3116121612WRA31WRA31WRA31WRA31

1976WDB31WRA31VM34-83VM34-84VM34-79VM34-80VM3455VM34-68

1977WDB31WRA31VM34VM34VM34VM34

19782-VM28VM34VM34VM34VM34

1979VM-28 orB34/32-2VM-34VM-34VM-34VM-36

1980B34/32-1VM-34VM-34VM.34VM-36

1981B34/32-1VM-34VM-34VM-34VM-36

16:3516:35

16:3516:3516:3516:3516:35

16:3516:3516:3518:3716:3516:3518:37

16:3916:3516:3516:3516:3518:3718:37

16:3916:3521:3924:4021:3924:4016:39

16:3916:3521:3924:4021:3924:40

Direct21:3924:4021:3924:40

Direct

21:3925:3921:3922:35

Direct17:3521:3921:3922:35

Direct17:3521:3921:3922:35

35-235-2

35-235-235-235-235-2

35-235-235-235-235-235-235-2

35-235-235-235-235-235-235-2

35-235-2SilentSilentSilentSilent35-2Silent

35-235-2SilentSilentSilentSilent

NoneSilentSilentSilentSilent

None

SilentSilentSilentSilent

NoneSilentSilentSilentSilent

NoneSilentSilentSilentSilent

Salsbury 780Salsbury 910

Salsbury 780Salsbury 850Salsbury 850Salsbury 780Salsbury 850

Salsbury 780Comet 100CComet 100CComet 100CComet 100CComet 100CComet 100C

Salsbury 780Comet 101Comet 101Comet 101Comet 101Comet 101Comet 101

Salsbury 780Comet 102CComet 102CComet 102CComet 102CComet 102CComet 101CComet 102C

SalsburyDeere/CometDeere/CometDeere/CometDeere/CometDeere/Comet

Comet 94DComet 102CSComet 102CSComet 102CSComet 102CS

Comet 94C

Comet 94CComet 102CComet 102CComet 102C

Comet 94CComet 102CComet 102CComet 102CComet 102C

Comet 94CComet 102CComet 102CComet 102CComet 102C

11.511,5

11.511.511.511.511.5

11.511.511.511.511.511.511.5

11.511.511.511.511.511.511.5

11.511.511.511.511.511.511.513

11.511.511.511.511.511.5

10.511.511.511.511.5

10.5

11.511.511.511.5

10.811.511.511.511.5

10.811.511.511.511.5

M63123M63124

M63911M63912M63912M63911M63912

M64549M64550M64550M64550M64550M64550M64550

M64549M64550M64550M64550M64550M64550M64550

M64549M64550M66345M66345M66345M66345M64550M65703

M64549M63911M66345M66345M66345M66345

M66345M66345M66345M66345M66345

M66345

M66345M66345M66345M68715

M66345M66345M66345M66345M68715

M66345M66345M66345M66345M68715

44

VEHICLES

Model

Spitfire . . .Trailfire340TrailfireLXSportfire ..Liquifire...

Make

.Fireburst

. Fireburst

. Fireburst

. Fireburst

.Fireburst

Enfllne

Model

TB340-ATA-340-ATA-440-ATA-440-BTC-440-A

LUBRICATION

Displ.

338CC339CC436CC436CC436CC

(

Make

MikuniMikuniMikuniMikuniMikuni

)perate Drot

Model

1982B34/32-1VM-34VM-34VM-34VM-36

)erlv at -40

SprocketRatio

Direct17:3521:3924:4021:39

deerees F

ChainSize

NoneSilentSilentSilentSilent

or

ShaftMake Center

Comet 94C 10.8Comet 102C 11.5Comet 102C 11.5Comet 102C 11.5Comet 102C 11.5

ADJUSTMENT

Deere

BeltNumber

M66345M66345M66345M66345M69170

The engine is lubricated by oil mixedwith the fuel. Use John Deere Snow-mobile Oil or a suitable BIA equivalent.Use Regular or Premium gasoline, 90octane or better on early models andRegular or Non-Leaded gasoline, 88 oc-tane or better on later models. Recom-mended fuel:oil ratio is 20:1 for units1974 or earlier, and 50:1 for later modelswithout oil injection.

For models with oil injection, gasolineand oil should be mixed to a 50:1 ratiobefore installing fuel in tank whenweather temperature is - 40 degrees For below. Oil injection system may not

LOWER IRUBBER?

Fig. 1 — Chain case lubricant lavat should be iustbelow iower inspection hole after removing

tower rubber piug.

below.The pressed steel chaincase should

contain SAE 30 engine oil to a level V4-V2inch below inspection plug hole afterremoving lower rubber plug as shown inFig. 1.

Models with right-hand mounted die-cast chaincase should be filled to level oflower plug (L - Fig. 2) with SAE 90 gearoil. Add oil if needed through upper fillplug (F). Old oil should be removed usinga suction gun at lower plug hole every200 hours, 2 years or 1000 miles andnew oil put in to bring fluid to correctlevel.

Except for using light oil on hinges orpivots whenever necessary to preventbinding, all other parts are self lubri-cating and do not require periodic atten-tion.

Fig. 2— View of right-hand mounted dlecastchaincase showing fill plug (F) and check

plug (L). D. Drag linkIllustrations for Fig. 1, Fig. 2, Fig 3 and Fig. 3A reproduced bypermission of Deere & Company. Copyright Dep~ & Company.

Fig. 3'Vlew of steering system used on earlysingle tie rod models. Distances (A and B) mea-sured at wear bar studs on skis should be equaLFinal instailed length of drag link adjuster (M)should not exceed two Inches (50 mm). Final In-stalled length of tie rod end (X) should not ex-

ceed r-S/f$ inches (33 mm).

STEERING AND SKIS. Steeringskis should be parallel to each other andwith vehicle frame when handlebar is innormal straight driving position.

On models with two tie rods, tie rodsare adjusted by turning center sectionafter loosening locknuts. For earlymodels, nominal length of each tie rod is11.87 inches and 13.25 inches on latermodels. Both tie rods should be adjustedalike.

Adjust steering system as follows forearly models with a single tie rod(T-Fig. 3) and drag link (D). Exhaustsilencer must be removed on mostmodels for access to tie rod ends.Loosen locknuts and turn center tube ortie rod until distances (A and B) meas-ured at ski wear bar nuts are equal. Ad-just drag link (D) until handlebars arestraight when skis point straight ahead.Extended length adjuster (M) must notexceed two inches (50 mm). Late models(Fig. 3A) are adjusted same as earlymodels with exception of drag link (D).Adjust drag link by loosening jam nuts

T. Tie r(Kl

Fig. 3A — View showing late model steeringsystem. Refer to Fig. 3 for Identification of parts

and measurements,

45

Deere VEHICLES

on ro(i ends anci turning center sleeve.Adjust sleeve until handlebars arestraight ahead when skis point straightahead, then retighten jam nuts.

Extended length of tie rod ends(X-Fig. 3) on both early and late modelsmust not exceed 1-5/16 inches (33 mm).

DRIVE CHAIN. Early models used a35-2 roller drive chain while all latemodels have silent type chain. Allmodels are equipped with spring-loadednylon tighteners and no adjustment isprovided. If excessive backlash is noted,remove inspection plug or side cover anciexamine chain, sprockets and tightenersfor wear or other damage.

BRAKE (Band Type). The band typebrake should fully apply when free endof hand lever is approximately one inchfrom handlebar grip. To adjust thebrake refer to Fig. 4 and repositionbrake cable housing anchor by turningjam nuts. If end of threads is reachedbefore proper adjustment is attained,withdraw brake band anchor pin andreposition in rear hole of attaching boss.

Brake light switch (Fig. 5) is normallyclosed but is held open by brake linkagewhen brake is released. With brake inreleased position, loosen front jam nutand tighten rear nut until brake lightcomes on, then reverse the procedureuntil light just goes out. Recheck to besure brake light comes on when ac-tuating lever is depressed but stays off

Fig. 4 — Normal brake adjusimeni is made by tur-ning lam nuts toward end of brake cable threads.Reposition anchor pin In rear hoie if end of

threads is reached.

with lever released. Light switch mayneed to be repositioned when brake link-age is adjusted.

(Disc Type). On early models withdisc type brake, refer to Fig. 6. Adjustcable housing anchor nuts (1) ifnecessary, until push pins center invalleys of actuating arm with brake re-leased; then tighten actuating stud nut(2) until brake fully applies with one inch(25 mm) clearance remaining betweenend of brake hand lever and handlebargrip.

For later models refer to Fig. 6A.Loosen cable locknut (top arrow) and ad-just actuating lever (bottom arrow)parallel with track tunnel, then tightencable locknut. Pull brake lever back andmeasure distance between lever andhandlebar, distance should be 1-1V2 inch-es. If adjustment is needed loosen jamnut (1) and turn adjusting bolt (2) untilcorrect adjustment is reached, thenretighten jam nut.

Check to be sure brake light comes onwhen brakes are applied and goes out

STRAIGHTEDGE

CAM

Fig. 6 — For early type disc brake, adjust cablehousing anchor nuts (1) if necessary until pushpins (inset) center in valleys of actuating arm;then adiust stud nut (2) until brake futiy applieswith one inch (25 mm) clearance remaining on

hand Ittvmr

DRIVENSHEAVE

DRIVESHEAVE

fig. 7-Distance "A" should be equal at frontand rear of driven sheave rim and S^2-lnch on

Modei 400 or 'A inch on Model 500.

when lever pressure is released. Brakelight switch is not adjustable.

DRIVE BELT ALIGNMENT (EarlyModels). With drive belt removed andengine not running, place a straightedgealong engine side of drive sheave asshown in Fig. 7; then measure clearance(A) between straightedge and nearestrim of driven sheave. Distance should beequal at front and rear and measure9/32-inch on Model 400 or V4-inch onModel 500. No adjustment of shaftcenter distance is provided.

(Late Models). On all models withcross shaft except Liquifire refer to Fig.8. Engine can be moved forward or rear-ward to adjust shaft centers, refer toCONDENSED SERVICE DATA forshaft center distance. Centerline adjust-ment is provided by adding or removingwashers (W-Fig. 8) which are availablein thicknesses of 0.018 and 0.060 inch(0.5 and 1.5 mm). The recommendedmethod of adjusting center distance andoffset is by use of the appropriate JohnDeere Special Tool as shown at (T); pro-ceed as follows:

Remove driven sheave, key and spacerwashers (W) from cross shaft. Slip hubof tool over cross shaft and drop freeend over drive sheave fixed face asshown. Loosen engine mounting boltsand slide engine forward or rearward asrequired until welded lugs of tool en-compass drive sheave rim. Slide tool in-ward until it contacts base of flange,then measure the clearance between in-ner end of tool hub and cross shaft bear-ing to determine required thickness of

7Fig. 5 —Make sure brake iight switch closeswhen brake is appiied by repositioning lam

nuts.

46

Fig. 8-Speciai tooi (T) permits quick and simpleadjustment of late model torque converter. Shaftcenter distance (D) Is adiusted by looseningmotor mounts. Washers (W) adiust offset.

Fig. 6A — View showing cable locknut (toparrow), actuating iever (bottom arrow), brake padadjusting bolt (2) and lam nut (1) for adjusting

brake system on late modei disc brake.

niustrations for Fig. 4, Fig. 5, Fig, 6, Fig. 6A, Fig. 7 and Fig. 8 reproducedby permission of Deere & Company. Copyright Deere & Company.

VEHICLES Deere

Fig, 8A — Vlaw showing Liqulfire driva bait alignmant componants, rafar to taxt for chackingand adjusting.

1. Key stock (Vi-inch x 20 inches) 2. Measured distance 3. Measured distance 4. Shims

shim pack (W). Install the required shimpack, coat exposed end of cross shaftwith "NEVER-SEEZ COMPOUND",then reinstall driven sheave and key.Tighten retaining cap screw to a torqueof 20 ft.-lbs. (2.8 kg-m).

On Liquifire models refer to Fig. 8A.Shaft center distance is non-adjustable,only clutch offset may be adjusted. Tocheck and adjust offset remove drivebelt, then use a %-inch x 20 inches longpiece of key stock and place betweenclutches as shown at 1-Fig. 8A.Measure distance two (2) and three(3)-Fig. 8A, add distances together anddivide the total by two (2). The answerwill give you the pulley offset. On early

Fig. 9—With machina unloadad, approxlmatalyhaif of raar fianga scraw (S) shouid appaar balowadga of brackat as shown in insat. Adfust byloosanlng clamp scraws (C) and turning adiust-ing scraw (A). Whan and of thraads is raachad,

mova clamp scraws to raar holas (H),

Fig. 10-Tansion bolt (arrow) adjusts tracktansion on siida suspension modals.

models offset should be between1.26-1.30 inches, later models 1.44-1.48inches. If offset is not within specifica-tion, add or remove shims (4) from be-tween driven sheave and secondaryshaft. For early models, shims are avail-able in 0.018 or 0.060-inch thickness and0.018, 0.031 or 0.049-inch thickness onlater models. Affer adjustment reinstalldriven sheave and check pulley align-ment, then install drive belt.

TRACK TENSION (Bogie WheelModels). With machine unloaded, ap-proximately half of rear bearing flangescrew (S-Fig. 9) should appear belowedge of adjustment bracket as shown ininset. Adjust by loosening the two clampscrews (C) and turning adjusting screw(A) on each side of machine an equalamount.

NOTE: Whenever track tension hasbeen adjusted, alignment MUST bechecked as outlined in TRACK SERVICESection of this manual.

(Slide Suspension Models). On 1976and 1977 models with slide suspension,track may be of one-piece constructionwith full length grouser bars molded in;or three piece belt design with 2/3-lengthriveted grouser bars.

On all models, track is adjusted by atension bolt on each side of rear idler ax-le as shown by arrow. Fig. 10. Raise rearof machine until track is clear. On earlymodels with riveted track, inside oftrack belt must not clear slide by morethan V4-inch (6 mm), measured beneathlower shock absorber mount as shown inFig. 11. On models with molded track,top of drive lug should not clear slide railby more than /g-inch (10 mm), measuredbeneath lower shock mount as shown inFig. 12. On 1978 models, inside of trackmust not clear slide by more than V4-inch(6 mm) as shown in Fig. 13. On all1979-1982 models except Liquifire,track to slide clearance is V4-inch (6 mm)

Fig. 11-On 1976 and 1977 rtvatad track modais,track should not ciaar siida mora than V4-inch (6mm) maasurad banaath iowar shock absorbar

mount as shown by arrows.

Fig. 12-On 197$ and 1977 modals with moidadtrack, top of driva lug shouid not ciaar siida bymora than Vt inch (10 mm) maasurad banaath

iowar shock mount as shown by arrows.

Fig. 13-On 1978 modais, insida of track mustnot ciaar siida by mora than V4-inch (6 mm)maasurad banaath iowar shock mount as shown

by arrows.

measured below lower shock mount. ForLiquifire models, track to slide clearanceis V2-inch (12 mm) measured below lowershock mount. A track that is either tooloose or too tight will affect perform-ance.

All slide suspension models have ameans of independently adjusting springrate. Increasing or decreasing springstrength at rear compensates for aheavier or lighter load. Increasingspring strength at front of track will de-crease ski effectiveness but permitoperation in deep or fluffy snow. De-creasing front spring strength willtransfer more weight to skis for bettersteering control on packed snow or ice.Refer to Figs. 14 through 18 for adjust-ment points.

Fig. 14 —Arrows show suspanslon spring adjust-ting scraws usad on 1976 and 1977 modais.Ttghtan front scraws for a firm rida, ioosan for asoft rida. Tightan raar scraws to pravant

bottoming according to ioad.

Illustrations for Fig. 8A, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13 and Fig. 14reproduced by permission of Deere & Company. Copyright Deere & Company. 47

Deere VEHICLES

Fig. IS —Arrows Indicate steering responsescrews on 1976 and 1977 models. Turningscrews out gives lift to skis and decreases

steering response.

OVERHAUL

SKIS AND STEERING. Skis, skilegs and springs are interchangeablefrom left to right. Steering arms onmodels with two tie rods are marked "R"and "L" for proper installation. Models

Fig. 16—On 1976 Liquifire only, a second hole(arrow) Is provided for maximum ski lift.

Fig. 17-Load adfustment on 1978-1982 modelsconsists of alternate anchors for rear springs.Move spring end to upper anchor for heavier

toad.

Fig. 19-Exploded view ofsteering skis and associatedparts used on a typicalsingle tie rod modeL Rightsteering arm Is shown at (R),

left steering arm at (L).

with single tie rod are identifiable asshown in Fig. 19.

Ski wear bars should be renewed ifworn to half their original thickness or ifotherwise damaged. Ski wear plates areprovided for installation under front endof spring. Wear plates should be re-newed if badly worn. Early models usedone, three and four-leaf springs asshown in Fig. 19. Late models use only asingle spring assembly. Spring leavesare renewable only as a complete springassembly which includes spring saddlesand bumpers, but saddles are renewableindividually on three and four leafsprings, and bumpers are renewable in-dividually on all models. Refer to Fig. 20or 21.

When installing steering linkage onmodels with two tie rods, adjust lengthof each tie rod (Fig. 22) to 11 Vs inches onearly models and 13V4 inches on latermodels measured from center to centerof attaching bolt holes on steering arms.After adjustment attach steering arms

to tie rods. Point both skis straightahead, then attach steering arms to skilegs. Inner end of right tie rod must beinstalled below steering post; inner endof left tie rod installed above steering

Fig. 22—On models with two tie rods, each oneshould be adjusted until distance (A) equals 11-Vt Inches (302 mm) on early models and 13 V4

Inches (336.6 mm) on late models.

Fig. 20—On three or four-leaf springs, saddles orbumpers can be renewed individually by re-

moving retaining nuts and bolts.

Fig. 18-Steering response on 1978-1982 modelsso equipped Is accomplished by tightening orloosening front spring adjustment Tighteningthe adjustment provides more ski lift and less

steering response.Fig. 21 On one-ieaf springs, bumper only canbe renewed by unscrewing from spring mount.

Fig. 23-On early models with single tie rod,steering arms must be installed to ski legs at a

30 degree Inward angle as shown.

48Illustrations for Fig. 15, Fig. 16, Fig. 17, Fig. 18, Fig. 19, Fig. 20, Fig. 21, Fig. 22 and Fig. 23reproduced by permission of Deere & Company. Copyright Deere & Company.

VEHICLES Deere

Fig. 24- With skis pointing straight ahaad, maa-sura from snowmobila frama to cantar of tia rodand as shown. DIstanca should maasura 6

Inchas (150 mm) ± Vi inch.

Fig. 25-Expiodad vlaw of traiiing arm bogiasystam usad on aariy modais.

post. Make minor ski alignment ad-justments after linkage is assembled.

On early models with a drag link andtie rod, both steering arms should angleinward about 30 degrees as shown inFig. 23. With skis pointing straight

Fig. 26—Bogia suspension units must baInstaliad as shown to pravant intarfaranca.

Fig. 28—Suspanslon framausad in 1976 and 1977

modais.

Fig. 29— Typical suspanslonframa usad on 1978-1982

modais.

ahead, measure from vehicle frame tocenter of tie rod attaching hole in steer-ing arm as shown in Fig. 24. Distanceshould be 6 inches (150 mm) plus orminus Vs-inch (3 mm). Late model steer-ing arms should be adjusted to wherethey are parallel with vehicle framewhen skis are pointed straight ahead.Exhaust silencer must be removed foraccess to steering arms.

TRACK AND SUSPENSION. Earlymodels are equipped with a trailing armbogie suspension system. Bogie wheelshave sealed ball bearings and are renew-able individually by removing themounting bolt. Six bogie support axlesare used. Units must be installed asshown in Fig. 26 to prevent interfer-ence. Refer to Fig, 27 for attaching pro-cedure for bogie clamps and springs.

Renew bogie wheel assemblies if tiresor bearings are damaged or worn.Renew bogie support tubes if bent to thepoint where they bind, or if bogie wheelsdo not run true and straight.

Refer to Fig. 28 for suspension frameused on 1976 and 1977 models, and toFig. 29 for a typical frame unit used on1978-1982 models.

To remove early frame unit, invert thesnowmobile and loosen track tension.

NOTE: Empty fuel tank and chaincaseand remove battery on models soequipped, to prevent fluid leakage.

Use a lV4-inch end wrench or Crescentwrench on shaft end of anchor arm(A-Fig. 30) to relieve spring pressure,and unbolt outer end of arm. Withspring pressure released on both sides,remove retaining screws securing frameto track tunnel and lift out the frame.

To remove the polyethylene slide railwear bars, remove the retaining nut andbolt at front end of slide rail. On modelsso equipped remove the stop from rearof rail, then use a hammer and chisel todrive the wear bar rearward out of sliderail slot.

NOTE: If difficulty Is encountered inloosening bar, drill a Va-inch hole in exactcenter of wear bar about 18 inches fromthe rear, and insert a V« x V4-inch capscrew to drive against, as shown In Fig.32.

Some rail slots are narrow. Measureslot width by sliding a 7/16-inch drill bitor rod the full length of the slot. Pry slotopen if gage rod is snug at any point.

Lubricate rail with grease and installnew wear bar from rear, using a softmallet to bump wear bar into position.

Fig. 30-Explodad viaw ofsuspansion frama supportusad on 1976 and 1977modals. A 1 V4'inch andwranch wiit fit on suspan-sion arm (A) to raiiava springprassura for disassambiy.

Fig. 27—Attaching datait for bogia supporttubas and springs.

Illustrations for Fig. 24, Fig. 25, Fig. 26, Fig. 27, Fig. 28, Fig. 29 and Fig. 30reproduced by permission of Deere & Company. Copyright Deere & Company. 49

Deere VEHICLES

Fig. 3i - Slide rail frame andassociated parts used on

T976 and 1977 models.

Fig. 3$-Removing chain and sprockets frommodels with welded steel chain case.

Install front retaining bolt and nut, andrear stop if so equipped.

To remove suspension frame on1978-1982 models, remove two hex headcap screws (Fig. 32A) on each side oftrack tunnel which secure suspension.Turn vehicle over on its right side, thenwithdraw suspension unit from track.

NOTE: Fluids should be drained orsiphoned out to prevent spiilage whenvehicle is turned on its side.

Slide rail wear bars are retained by astop (S - Fig. 33) at rear of rail and a cap(C) at front. To remove the wear bar,remove stop (S) and drive wear bar rear-ward out of slide rail slot using a woodenblock and hammer. Inspect and repairslot for burrs, bends or rust, thenlubricate slot and install new wear barfrom front using a soft mallet. Becareful not to damage surface of slideduring installation.

Fig. 32-A sticking wear bar can be removed bydriiiing a hoie and instaiUng a boit to drive

against as shown.

Fig. 32A — View showing cap screws used to boitsuspension to tunnel frame.

50

Most slide rail models have rivetedpolyethylene wear bars in top of tracktunnel which are renewable. Removeseat and suspension as outlined earlierin section. Continue to turn vehicle overon its top side and place track over frontof vehicle. Drill out rivets and cut headsoff using a sharp chisel and hammer.Renew wear bars and install rivets fromwear bar side.

On all models, install slide suspensionby reversing removal procedure, thenadjust as previously outlined.

WELDED STEEL CHAINCASE.Refer to Fig, 35 for an exploded view.

Fig. 33-Slide raii frame andassociated parts used onmost 1978-1992 models.Wear bar is retained by capfC> at front end and stop (S)

at rear.

Refer to CONDENSED SERVICEDATA tables for standard sprocketratio for each model. Automatic spring-loaded chain tensioners are used and ad-justment is not required.

The 35-2 endless chain is renewableonly as a unit and repair links are notprovided. To remove the chain, removethe two rubber access plugs, remove thetwo cap screws securing the chain ten-sioner blocks and lift out tensioner units.Work drive chain off lower sprocket andlift chain out through upper access plughole. Refer to Fig. 36.

Upper chain sprocket can be slippedoff of secondary shaft splines after

Fig. 34- Exploded view of atypical suspension framesupport used on 1978-1982modeis. Some models differ

siightiy.

Fig. 35 —Exploded view ofwelded steel chain case andassociated parts used on

early modeis.

Illustrations for Fig. 31, Fig. 32, Fig. 32A, Fig. 33, Fig. 34, Fig. 35 and Fig. 36reproduced by permission of Deere & Company. Copyright Deere & Company.

VEHICLES Deere

Fig. 37~A special puller (JDM't3) Is requindto nmove Iow0i chain sprockat

BRAKEBAND

Fig. 38~Sacondary shaft and braka Is usad onmodals with waldad staal chain casa.

removing cotter pin and slotted nut.Removal of lower sprocket requires theuse of a special puller (JDM-13) as shownin Fig. 37. Remove sprocket through up-per access hole after sprocket is pulledfrom track drive shaft splines.

To remove the secondary shaft, brakemechanism or secondary shaft bearings,first remove drive belt. Disconnect

Fig. 40—Chain casa can ba ramovad by ramov-Ing two bolts attar attaching componants

ara ramovad.

Fig. 41 - Ramowad flaw of chain tansion blocksusad on modals with waldad chain casa.

steering column from steering post andslide steering column up about six inchesto provide clearance; then removedriven pulley. Remove drive chain andupper sprocket as previously outlined.

Loosen the locking flange on right-hand bearing (Fig. 38) by driving topside rearward, then remove the bearing.Loosen the locking flange on left-handbearing and slide secondary shaft out ofleft-hand bearing, brake drum and gear-case unit.

Refer to Fig. 39 for an exploded viewof brake assembly. The drum can be re-newed after removing secondary shaftas previously outlined. The bonded type

Fig. 42~Explodad viaw ofright-hand mountad diacastchaincasa usad on tatarmodals. Chain tansionar as-sambiy shown in Insat (A)was usad on 197$ modals,insat (B) shows tansionarunit usad on 1977 and latar

modats so aquippad.

brake band can be renewed when drumis out or by rolling the band arounddrum with secondary shaft and drum in-stalled.

Drive chain and lower sprocket mustbe removed before track drive shaft canbe removed. Raise rear of machine,loosen track and remove rear trackidler. Remove lubricant from chaincaseusing a suction pump. Unbolt right-handbearing flange and speedometer drive.Loosen locking flange on left-hand bear-ing. Loosen the three flange bolts ongearcase side to allow bearing outer raceto turn; move opposite end of track driveshaft until drive wheels clear tunnelwall, then withdraw the shaft, drivewheels and right bearing as an as-sembly.

Gearcase can be unbolted and re-moved after drive axle and secondaryshaft are out, by removing the two boltsshown in Fig. 40. When installing gear-case, leave the two bolts (Fig. 40) looseuntil track drive shaft is installed andflange bolts tightened.

Assemble gearcase components byreversing the disassembly procedure.Tighten cap screw retaining lowersprocket to 30-35 ft.-lbs. (4.2-4.8 kg-m).Paint secondary shaft in area of brakedrum and driven sheave with NeverSeezand install secondary shaft, brake, up-per sprocket and sprocket nut BEFOREtightening the cap screw retainingdriven sheave. Tighten the sheave re-taining cap screw to a torque of 20ft.-lbs. (2.8 kg-m).

Install chain tension blocks as shownin Fig. 41 and tighten retaining capscrews to 100 inch-pounds (1.2 kg-m).Fill chaincase with five ounces of SAE30 engine oil when unit is assembled.

RIGHT-HAND MOUNTED DIE-CAST CHAINCASE. Refer to Fig. 42for an exploded view and to CON-DENSED SERVICE DATA tables forstandard sprocket ratios. Silent chainwith automatic tensioner unit is used.

To remove chain and sprockets, loosencover screws and allow fluid to drain,then remove cover. Remove sprocket re-taining cap screws. On 1976 models,remove chain tension assembly (A), bothsprockets and chain as a unit. On 1977

Fig. 39-Bxpiodad viaw of band typa braka usadon modals with waldad staai chain casa.

Illustrations for Fig. 37, Fig. 38, Fig. 39, Fig. 40, Fig. 41 and Fig. 42 reproducedby permission of Deere & Company. Copyright Deere & Company. 51

Deere VEHICLES

and later models except Liquifire, with-draw chain tension block (B-Fig. 42)from pin; then remove chain and bothsprockets as an assembly. On Liquifiremodels loosen chain tensioner (Fig. 42A)adjusting screw and remove tensioner,sprockets and chain.

On all models except Liquifire, chain isavailable as an endless assembly only; in62, 66 and 68 pitch lengths. Correctlength for standard and optional driveratios are as follows:

SpeedRatio1.56:11.67:11.72:11.86:12.06:12.47:1

Upper Lower ChainSprocket Sprocket Length

252422211717

394038393542

626866666266

On Liquifire models, chain is availableas an endless assembly only; in 66, 68and 70 pitch lengths. Correct length forstandard and optional drive ratios are asfollows:

SpeedRatio1.56:11.59:11.67:11.77:11.86:11.91:11.96:12.05:1

Upper LowerSprocket Sprocket

2522242221222019

3935403939423939

ChainLength7066706868706666

Fig. 42A—Vi0w of chain tensioner used on Liqui-fire modais.

Do not intermix sprocket or chaincombinations other than those listed.

NOTE: Changing to a slower (higher)speed ratio does not necessarily meanthat top speed wiii be reduced. Actuaiground speed results from a COMBiNA-TiON of drive ratio, ioad, engine torqueand drive ciutch setting.

On all models except Liquifire, the38-tooth lower sprocket requires a dif-ferent spacer (S-Fig, 42) than any ofthe other sprocket sizes. When changingto or from the 1.72:1 ratio, the optionalspacer must be obtained. Note and re-cord the total number of shims installedbehind each of the two sprockets whengearcase is disassembled. Shims controlsprocket alignment and permit sprock-ets to be tightly installed (without endfloat). Sprockets must align within0.010-inch (0.25 mm) and shaft endsmust be recessed in sprocket hubs whenproperly installed, A maximum of three0.018-inch (0.457 mm) shims may be us-ed between spacer and sprocket onlower shaft. A maximum of ten 0,010-inch (0.25 mm) shims may be used be-tween bearing and sprocket on uppershaft.

When checking sprocket alignment,install sprockets without the chain as

Fig. 43-Using a stralghtadga to check sprocketalignment Refer to text for detaiis.

52

Fig. 44-Tensloner tool (JDM-82) instailad (ar-row) to assist in assembling sprockets in

1976 modal chain casa.

shown in Fig, 43. When shim pack thick-ness is determined; remove sprocketsleaving shim packs installed, then rein-stall chain and both sprockets. On 1976models, tightener assembly must be in-stalled with the chain, with special tool(JDM-82) assisting in holding tensioneras shown in Fig. 44.

On later models except Liquifire thetensioner (Arrow-Fig. 45) is slipped in-to position after chain and sprockets areinstalled. Use LOCTITE on sprocket re-taining screw threads on final assembly.

On Liquifire models chain tensioner(Arrow-Fig. 42A) adjusting screwmust be adjusted to set tension on chain.Loosen jam nut and turn screw in untiltensioner is snug on chain. Turn drivensheave V2-turn forward and check ad-justment, then repeat. Back off adjust-ing screw V4-turn, then tighten jam nut.Use LOCTITE on sprocket retainingscrew threads on final assembly.

On early models with split cover gas-ket, install gasket ends at eleven o clockas shown at Arrow-Fig. 46. End gapshould be 1/16 to 3/16-inch (2-5 mm). Iflater endless gasket is installed on earlychaincase, drill a 1/16-inch hole in upperplug to provide a vent.

To remove secondary shaft, brakemechanism or secondary shaft bearings,first raise belt guard and remove drivebelt. Remove retaining cap screw andwasher, then slide driven sheave fromsecondary shaft. Retrieve and save ad-justing shim pack from behind drivensheave. Remove chain and sprockets aspreviously outlined. On some models airintake silencer assembly and hose willneed to be removed. On models so equip-ped, locking collar (Fig, 46A) will need

Fig. 45- View of chain tansioner usad on 1977and latar modals.

Fig. 46-On eariy modals with spilt covargaskat, install gasket ends at alavan o'clock

as shown by arrow.

Fig. 46A - Viaw showing locking collar and satscraw usad on modals so aquippad.

Illustrations for Fig. 42A, Fig. 43, Fig. 44, Fig, 45, Fig. 46 and Fig. 46A reproducedby permission of Deere & Company. Copyright Deere & Company.

VEHICLES Deere

Fig. 47A - View showing latemodel disc brake assembly.

Fig. 47— Exploded view of early type disc brakeassembly used on models with dlecast chain-

case.

to be removed. To remove collar, turnset screw out of housing, then loosen col-lar by tapping it clockwise. Remove left(pulley end) bearing and flanges, thenslide secondary shaft to left and out ofchaincase side bearing and brake disc.

Refer to Fig. 47 for an exploded viewof an early type disc brake assembly andFig. 47A for an exploded view of a latetype disc brake assembly. With second-ary shaft removed, unbolt cable bracketand brake puck body from chaincase,then lift out brake disc.

Pucks and/or brake disc can be re-newed at this time. If brake disc iswarped or pucks are cracked, installheavy duty brake kit. On early model(Fig. 47) brake assembly, stationarypuck is installed in chaincase with LOC-TITE. Heat puck to 400 degrees F tobreak the LOCTITE seal and loosen thepuck. Degrease housing recess and coatnew puck with LOCTITE or two-partepoxy when assembling. On late modelbrake assembly, renew pucks with refer-ence to Fig. 47A. When assembling out-side housing be sure to position puckwith metal part facing the actuatingscrew; not brake disc.

Coat secondary shaft in brake disc hubarea with NEVER-SEEZ when assem-bling. Brake disc must be free to slide onshaft or brakes will not work properly.

Adjust brake engagement systemafter assembly by referring to DISCBRAKE ADJUSTMENT section.

DRIVE SHAFT (Direct Drive). Re-move muffler, outer brake body, brakepuck, brake disc, shaft key, drivensheave and spacer shims. Remove twosuspension mounting bolts from eachside of tunnel. Drain fluids as needed toprevent spillage, then tip vehicle ontoright side and withdraw suspension as-sembly. Continue to turn vehicle over onits top side. Remove bolt securing right-hand drive wheel to shaft and slide drivewheel over to left side. Remove right-hand bearing assembly mounting bolts

and nuts, then withdraw bearing fromshaft and tunnel. Slide drive shaft as-sembly to right-hand side of tunnel,remove left-hand bearing assemblymounting bolts and nuts and then with-draw shaft assembly from tunnel.

Inspect drive shaft, bearings and drivewheels for excessive wear or any otherdamage. Renew all parts as needed. Re-assemble in reverse order of disassem-bly. Adjust brake assembly and tracktension as outlined in earlier sections.

(Chain and Sprocket Drive). Allmodels except Liquifire use two drivewheels, Liquifire models use three drivewheels.

To remove track drive shaft, firstempty fuel tank. Remove battery onelectric start models. Loosen chaincasecover retaining screws and allow fluid todrain. Remove cover, chain and sprocketas outlined in earlier section. Removetwo suspension mounting bolts fromeach side of tunnel. Tip vehicle ontoright side and withdraw suspension as-sembly. Continue to turn vehicle over onits top side. On models with two drivewheels, remove the two bolts securingdrive wheels to track drive axle and slidewheels toward center as shown in Fig.48. On all models, remove cap screwssecuring drive shaft bearing flanges totrack tunnel. Slide track drive shaft to-ward chaincase side, lift opposite end ofshaft and withdraw shaft, drive wheelsand bearings from track tunnel andtrack.

Inspect drive shaft, bearings and drivewheels for excessive wear or any otherdamage. Renew all parts as needed. Onlate model Liquifire, drive wheels arepressed on track drive shaft. If renewalis needed, shaft and wheels must be re-newed as a complete unit. Reassemble inreverse order of disassembly. Refillfluids to proper levels. Adjust brakeassembly and track tension as outlinedin preceding sections.

CHAINCASE. To remove chaincase,first remove chaincase cover, drivechain and sprockets as outlined in earlier

section. As needed remove muffler, airintake silencer and hose. Remove upperand lower bearing flange nuts, thenremove drive belt, driven sheave andsecondary shaft as previously outlined.Remove brake cable from brake leverand bracket. Remove two nuts (Ar-rows-Fig. 49) securing chaincase tooutside of track tunnel, and lift offchaincase with brake assembly.

Reassemble by reversing removal pro-cedures. Locking flanges on both trackdrive shaft bearings must face towardchaincase side. Install a new gasket bet-ween track drive shaft bearing flangeand chaincase, and a new "0" ring onchaincase side bearing. Adjust brakecable and refill chaincase to proper levelwith recommended gear oil.

Fig. 48-View of track drive shaft with drivewheels slid to middle for shaft removal.

Fig, 49— To remove the diecast chainremove the two nuts (arrows) and upper and

tower bearing flange nuts.

Illustrations for Fig. 47, Fig. 47A, Fig. 48 and Fig. 49 reproduced bypermission of Deere & Company. Copyright Deere & Company. 53

Deere VEHICLES

Fig. SO-Expiodad viaw of drivan clutch andassodatad parts usad on lata modats.

DRIVE BELT AND SHEAVES. Re-fer to CONDENSED SERVICE DATAtables for belt and converter application,and to the appropriate components sec-tion for unit overhaul.

Late model machines with JohnDeere/Comet drives can be adjusted forengagement speed and governedspeeds. Clutch engagement speed is ad-justed by changing springs and weightsin drive clutch. Modifications in driveclutch will also affect maximum speed,however, upshift can be independentlyaltered by changing spring setting indriven sheave.

Fig. 51— To ramova John Daara drivan pullayramova ratalning cap scraw (arrow) and

washar.

Fig. 52— Viaw of John Daara clutch cam ramov-ad showing torqua spring anchor holas (A) whichara numbarad right to laft as shown in insat.

JOHN DEERE DRIVEN SHEAVE.Refer to Fig. 50 for an exploded view.The John Deere driven unit is unique inthat the actuating spring and torquecam are on the fixed face side of pulley.

To remove the driven pulley, raise beltshield and remove the drive belt.Remove cap screw (Arrow-Fig. 51) andwasher and slide pulley unit off of shaft.

Remove the three cap screws securingcam to moving face studs and lift offcam and spring. Note positioning of tor-que spring anchor in cam face as pulleyis disassembled. Cam is equipped withfour anchor holes as shown at (A-Fig.52) which are numbered counter-clock-wise as shown in inset. The correct holefor most applications is No. 2. Movingspring anchor to a higher numbered holeincreases spring tension and engine topspeed.

NOTE: When spring anchor is moved toNo. 4 hole, cam must be turned clockwiseTWO ramps (140 degrees). In all other an-

Fig. S2A~Explodad viaw of Modai 94C drivashaava.

1. Fixed face hub2. Spring3. Moveable face4. Wedge

5. Cover plate6. Flat washer7. Lock washer8. C ^ screw

chor hole positions, correct preioad isONE ramp.

Inspect Nylon ramp shoes in fixed facefor wear or damage. If removal is indi-cated, break off ramp shoe, then CARE-FULLY drill out shoe shank using a15/64 inch drill. Do not enlarge hole inramp post. Install new ramp shoes withepoxy, and tap into place with a softhammer.

Bushings in moveable hub and cam arerenewable. Bushing in hub must bepressed out and new bushing pressed inuntil flush with hub bore. Cam bushingcan be driven out with a hammer andpunch, and new bushing pushed in byhand.

Use NEVER-SEEZ lubricant spar-ingly when assembling on shaft and bothbushings. Make sure the removedspacers are installed between sheavehalves.

Recheck belt alignment when install-ing sheave, as previously outlined.

JOHN DEERE DRIVE SHEAVE.Clutch Models 94C and 102C are manu-factured for John Deere by Comet In-dustries. Refer to COMET CON-VERTER section for disassembly andrepair procedures. Refer to accompany-ing tables for making altitude adjust-ments. For identification of componentslisted in tables refer to Fig. 52A forModel 94C and Fig. 52B for Model 102C.

Trailfire 340-94C Clutch (Black Cover)

Altitude

Sea Levelto

3000 Ft.

3000to

6000 Ft.

Above6000 Ft.

ClutchEngagement

(rpm)

4000to

4300

4000to

4300

4000to

4300

GovernedSpeed(rpm)

6000to

6500

6000to

6500

6000to

6500

Primary SheaveNo. of Hole

Weights Size Spring

in.

63

36

Vs m.1 in.

Vs in.1 in.

White

White

White

Driven SheaveSpring CamPos. (Degrees)

No. 2

No. 2

No. 2

ChaincaseSprocket Chain

Teeth (Pitch)

44

44

44

21/39

17/35

17/35

66

62

62

54Illustrations for Fig. 50, Fig. 51, Fig. 52 and Fig. 52A reproducedby permission of Deere & Company. Copyright Deere & Company.

VEHICLES Deere

Trailfire 340-94C Clutch (Silver Cover)

Altitude

Sea Levelto

3000 Ft.

3000to

6000 Ft.

Above6000 Ft.

ClutchEngagement

(rpm)

3200to

3500

3300to

3600

3400to

3700

GovernedSpeed(rpm)

6000to

6500

6000to

6500

6000to

6500

Primary SheaveNo. of Hole

Weights Size Spring

3/4 in. White

in.in.

Driven SheaveSpring Cam

Pos. (Degrees)

White

in. White

No. 2

No. 2

No. 2

44

44

44

ChaincaseSprocket Chain

Teeth (Pitch)

21/39

17/35

17/35

66

62

62

Altitude

Sea Levelto

3000 Ft.

3000to

6000 Ft.

6000to

9000 Ft.

Above9000 Ft.

Spitfire-94C Clutch (Prior to 1980)

Primary Sheave Driven SheaveNo. of Hale Spring Cam

Weights Size Spring Pos. (Degrees)

in. White No. 2 44

in. White No. 2 44

3 3/4 in .

6 Vs in. White No. 2 44

1 in. White No. 2 44

Fig. 52B-Exploded vlaw ofModai 102C driva sheava.

1. Fixed face hub2. Steel washer3. Arm4. Bushing5. Moveable face hub6. Bearing7. Washer8. Plug9. Pin

10. Washers11. Roller12. Spicier13. Spring14. Cover plate15. Washer16. Washer17. Lock washer18. Cap acrew

Spitfire-94C Clutch (1980 and later)

Altitude

Sea Levelto

3000 Ft.

3000to

6000 Ft.

6000to

9000 Ft.

Above9000 Ft.

Primary SheaveNo. of Hole

Weights Size Spring

9

63

9

9

3/4 in.

3/4 in .% in.

Vs in.

1 in.

White

White

White

White

DrivenSpringPos. (]

No. 2

No. 2

No. 2

No. 2

SheaveCam

Degrees

44

44

44

44Illustrations for Fig. 52B and Fig. 53 reproduced by permissionof Deere & Company. Copyright Deere & Company.

Fig. 53— Viaw showing knock-out piug ramovadfrom frame and spadai John Daare JDM-41-1

puiier used to remove drive sheava.

55

Deere VEHICLES

Altitude

Sea Levelto

4000 Ft.

Above4000 Ft.

ClutchEngagement

(rpm)

3600to

3800

4300to

4500

GovernedSpeed(rpm)

6200to

6700

6200to

6700

Trailfire 340-102C Clutch

Primary Sheave Driven Sheave ChaincaseArm Spring Cam Sprocket ChainKit Spacers Spring Pos. (Degrees) Teeth (Pitch)

55159 Silver No. 2 38 17/35 62

Compound54287 2 Silver No. 2 AM55127 17/35 62

Trailfire 440 and LX-102C Clutch

Altitude

Sea Levelto

4000 Ft.

Above4000 Ft.

ClutchEngagement

(rpm)

3600to

3800

3700to

3900

GovernedSpeed(rpm)

6200to

6700

6200to

6700

Primary SheaveArmKit Spacers Spring

54281

54920

2

2

Silver

Silver

DrivenSpringPos.

No. 2

No. 2

SheaveCam

(Degrees)

44

44

ChaincaseSprocket Chain

Teeth (Pitch

21/39

21/39

66

66

Altitude

Sea Levelto

4000 Ft.

Above4000 Ft.

ClutchEngagement

(rpm)

3800to

4000

4300to

4500

GovernedSpeed(rpm)

6700to

7200

6700to

7200

Primary SheaveArmKit Spacers i

55195 2

54287 2

Sportfire 440-102C Clutch

Driven Sheave ChaincaseSpring Cam Sprocket Chain

Spacers Spring Pos. (Degrees) Teeth (Pitch)

CompoundSilver No. 2 AM55127 21/39

SilverCompound

No. 1 AM55127 21/39

66

66

Altitude

Sea Levelto

4000 Ft.

4000to

8000 Ft.

Above8000 Ft.

ClutchEngagement

(rpm)

4400to

4600

5000to

5200

5200to

5400

GovernedSpeed(rpm)

8000to

8200

8000to

8200

8200to

8400

Liquifire-102C Clutch

Primary Sheave Driven Sheave ChaincaseArm Spring Cam Sprocket ChainKit Spacers Spring Pos. (Degrees) Teeth (Pitch)

55172 2 Purple No. 2 44 22/35 66

55112 2 Green No. 2 44 22/42 70

55112 Gold No. 2 44 22/42 70

56

VEHICLES Deere

18 1920

14 13

(Model TR8qO). Drive sheaveassembly is centrifugally operated. Asengine speed increases, arms (8-Fig.54) swing out against ramps (4) on move-able face (3) forcing moveable face halfin towards face hub (1), Clutch spring,weight kit and ramp kit is available tomake altitude change adjustments onclutch.

To remove drive sheave, raise beltshield and remove drive belt. Removeknock-out plug from side of pan (Fig.53), then remove drive sheave retainingcap screw and washer. Using specialJohn Deere puller JDM-4M (Fig. 53) orsuitable equivalent withdraw drivesheave from crankshaft.

To disassemble sheave refer to Fig. 54for parts breakdown and identification.Press down on cover plate (18) andremove retaining screws equally. Cau-tion should be used during removal ascover plate is under spring pressure.Remove cover plate, spring and ramps(4). Remove locknut (11) and withdraw

Fig. 54-Exploded view ofModel TR800 drive sheave.

1. Fixed face hub2. Bushing3. Moveable face hub4. Ramp5. Washer6. Spider7. Bushing8. Arm9. Washer

10. Pin11. Locknut12. Weight13. Bolt14. Washer15. Sleeve16. Bushing17. Spring18. Cover plate19. Washer20. Cap screw

bolt (13) from arm (8). Complete disas-sembly of arm (8) by removing weights(12), washers (14), sleeve (15) and bush-ing (16). Use suitable tools and turnspider assembly (6) off hub (1). Inspectall parts for wear, cracks, pitting or anyother damage and renew as needed.

Reassemble sheave assembly inreverse order of disassembly. Ridge onarm (R-Fig. 55) must be aligned withsquare (S) to insure proper operation ofarm. Arrow (1-Fig. 56) on spidershould be aligned with arrow (2) onmoveable face during assembly to insureproper balance of sheave assembly.Complete reassembly with reference toFig. 54. Install drive sheave on crank-shaft and tighten retaining cap screwand washer to 50 ft-lbs. Install drive beltand check operation of unit.

Fig. SS-View showing alignment ridgearm and square (S) on spider.

on

Fig, SS'Vlew showing alignment arrows onspider ft) and moveable face hub (2).

Refer to table shown below for makingaltitude adjustments. Refer to Fig. 54for identification of drive sheave com-ponents listed in table.

Altitude

Sea Levelto

4000 Ft,

4000to

8000 Ft.

8000 Ft.and

Above

Clutch GovernedEngagement Speed

TR800 Drive SheaveSecondary

Sheave

(rpm)

4400to

4600

5100to

5300

5100to

5300

(rpm)

8000to

8200

8000to

8200

8000to

8200

Spacers

2

2

2

ClutchSpring

Green

Red

Red

WeightKit

6-AM55476

3-AM554763-AM55478

3-AM554763-AM55478

RampKit

No. 1AM55477

No. 2AM55479

No. 2AM55479

SpringPosition

No. 2

No. 2

No. 2

Cam

44

44

44

Chaincase

Sprocket ChainTeeth (Pitch)

21/39

20/39

19/39

68

66

66

Illustrations for Fig. 54, Fig. 55 and Fig. 56 reproduced by permissionof Deere & Conipany. Copyright Deere & Company. 57