Caterpillartrack-type skiddertrack skidder

Caterpillar D4HTSK II

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar D4HTSK II is a high-drive, elevated-sprocket track-type skidder built for logging on steep or soft terrain, not a dozer conversion. It carries the Caterpillar 3204, a mechanically governed 4-cylinder turbocharged diesel of 5.2 L displacement rated around 71 kW (95 hp) gross, the same engine and driveline used in the D4H crawler tractor line. Operating weight runs roughly 12,380-12,909 kg (27,293-28,460 lb), varying by undercarriage and series. Cat offered the chassis with a tri-track, heavy-duty tri-track, quad-track, heavy-duty quad-track, or single-track undercarriage, paired with a front 6-way angling blade for trail work and a rear logging attachment: a PTO/hydraulic drum winch rated near 22.7 t (50,000 lb) line pull, or a hydraulic swing grapple. Cat built this Series II update through the mid-to-late 1980s, sitting between the earlier D4H TSK and the later D4HTSK III.

The Series II tag marks a mid-life refresh of the D4H TSK skidder rather than a new engine generation: it kept the 3204 while Cat broadened the multi-track undercarriage options for wetter and softer ground work. That puts it squarely between two different powertrains on the same nameplate. The original D4H TSK shared this 3204 setup, while the later D4HTSK III moved to the larger 3304 engine, a separate generation that does not interchange with Series II parts. In the used and parts market today, the D4HTSK II shows up mainly as a working forestry unit or a parts source; its mechanically governed engine keeps troubleshooting straightforward with no electronic control module to fault-code, and demand centers on winch and grapple driveline components, tri-track and quad-track undercarriage parts, and blade linkage wear items that see hard use in logging service.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar D4HTSK II specifications

Overview

Machine typeTrack-type skidder (TSK), based on the D4H crawler tractor platform, built for forestry skidding with a multi-track flotation undercarriage.
Series coveredBase D4H TSK and D4H TSK Series II. Both use the same 3204 engine family; Series II shows a modest weight increase and slightly different gross power rating versus the earlier build.
Undercarriage configurations offeredTri-track and quad-track arrangements per side, each also offered in a heavy-duty version, for extra flotation and stability skidding over soft or uneven ground. Published weight/dimension figures represent a mid-range configuration; exact figures shift with the track option fitted.
Serial prefixes referenced in sourcesMultiple factory serial-number prefixes are associated with this line (documented in service literature); exact prefix-to-configuration mapping should be confirmed against the machine's own plate.

Engine

Engine modelCaterpillar 3204, 4-cylinder turbocharged diesel. Consistent across both the base D4H TSK and the Series II — no engine change is documented between the two builds.
Displacement5.2 L (317.4 cu in)
Gross power71 kW (95.3 hp) reported for the Series II; 73.9 kW (99 hp) gross / 67.2 kW (90 hp) net reported for the earlier base build, measured at 2200 rpm. Treat as varying by series/rating convention rather than a true output change.
AspirationTurbocharged
Electrical system24V system with roughly 35A alternator output (documented for the base build; not separately re-published for Series II).
Contamination noteDo not carry over the 3304 engine used in the plain (non-TSK) D4H Series III crawler tractor — that is a different machine line with a larger engine, confirmed by independent sourcing.

Weights

Operating weight — base D4H TSK12,380 kg (27,293 lb)
Operating weight — D4H TSK Series II12,909 kg (28,460 lb)
NoteWeight varies by series and by which track configuration (tri-track vs. quad-track, standard vs. heavy-duty) is fitted; sources do not break out a separate figure per track option.

Dimensions

Overall width2460 mm (8.08 ft)
Height to top of cabapprox. 3160-3163 mm (10.37-10.38 ft), consistent across sources within rounding
Ground clearance559 mm (1.84 ft)
Blade width2640 mm (8.67 ft)
Length of track on groundapprox. 2636-2640 mm (8.65-8.67 ft), consistent across sources within rounding
Track shoe width460 mm (18.12 in)
Ground contact area2.42 m2 (3751 in2)
Track gauge / overall transport lengthNot documented in available spec sources for this model — varies with tri-track vs. quad-track fitment; verify with dealer or OEM literature for the specific unit.

Performance

Forward gears3-speed powershift
Maximum forward speedapprox. 10.2-10.3 km/h (6.3-6.4 mph)
Reverse gears3-speed (documented for the base build; Series II uses the same powershift transmission architecture)
Maximum reverse speedapprox. 12.3 km/h (7.6 mph) — documented for the base build; not separately re-published for Series II, presumed similar given the shared transmission
Ground pressureapprox. 50 kPa (7.25 psi) — documented for the D4H TSK line; may vary slightly between tri-track and quad-track undercarriage options, which is not broken out separately in available sources
Drawbar pullNot published in available spec sources for this model — check OEM service literature or your dealer for the applicable serial range
GradeabilityNot published in available spec sources for this model

Blades

Blade typeFront-mounted angling dozer blade for trail clearing and site prep ahead of skidding, paired with a rear arch and winch for log skidding. No S/SU/A/VPAT-style OEM blade-family designation is documented for this model — it functions as a clearing/utility blade rather than a production dozer blade.
Blade width2640 mm (8.67 ft)
Blade capacityVolumetric capacity (cubic meters/yards) is not published for this model — typical of skidder-mounted clearing blades rather than rated production dozer blades.

Hydraulic System

Pump typeVariable-displacement piston pump with load-sensing control
Pump flowapprox. 94.6 L/min (25 gpm) — documented for the base build; not separately re-published for Series II
Relief valve pressureapprox. 18,600 kPa (2700 psi) — documented for the base build; not separately re-published for Series II

Service Capacities

Fuel tank167 L (44.2 US gal)
Engine oilNot documented for this specific application in available spec sources — capacity depends on sump/filter configuration; confirm against the OEM service manual for this serial range rather than a generic 3204 engine figure.
Cooling systemNot documented for this specific application in available spec sources — radiator sizing is chassis-dependent and not confirmed for this model; confirm against the OEM service manual.
Hydraulic tankNot documented in available spec sources for this model.

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

D4HTSK II fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)About 15 L (4 US gal) for the Cat 3204 diesel as fitted to this chassis. The bare 3204 block is used across many Cat products with pan capacities reported anywhere from about 9.5 to 19 L depending on installation, so confirm level with the dipstick rather than relying on a generic engine figure.Cat DEO (Diesel Engine Oil), API CD/CE performance level. Use SAE 10W-30 for ambient range approximately -18C to 40C (0F to 104F); use SAE 15W-40 for approximately -9.5C to 50C (15F to 122F). Select the highest viscosity allowed for the expected ambient temperature range.
Cooling system27 L (7.2 US gal). This figure is consistent across spec listings for the D4H and D4H LGP chassis carrying the 3204 turbocharged engine, the same cooling package used on the TSK II.Factory-era fill was Cat DEAC (Diesel Engine Antifreeze/Coolant). Current dealer service practice for this vintage typically uses Cat ELC (Extended Life Coolant). Do not mix ELC with conventional coolant or with SCA-treated coolant.
Fuel tank167 L (44.2 US gal). This value is consistent across every spec source found for the D4H TSK II.No. 2-D diesel fuel meeting Cat's diesel fuel specification. Modern service fill is ultra-low-sulfur diesel (ULSD).
Transmission / powertrain (powershift transmission plus bevel gear and steering clutch compartment, combined)Roughly 117 to 120 L (31 to 32 US gal) total system fill. On this chassis the powershift transmission, bevel gear, steering clutches and brakes share one lubrication system rather than being topped off separately. This is a system-fill number, not a drain-and-refill number — oil trapped in lines, clutch packs and the housing means you will not recover the full quantity on a routine drain.Cat TDTO (Transmission and Drive Train Oil) meeting Cat TO-4 specification. SAE 10W for cold ambient (down to roughly -20C/-4F); SAE 30 for normal to warm ambient (roughly 0C to 35C / 32F to 95F).
Final drive (each side)About 6 L (1.6 US gal) per side per available spec data for this chassis. Only single-source figures were found for this exact number — verify against the dipstick/level plug on your machine.Cat TDTO, Cat TO-4 specification, same viscosity selection as the powertrain compartment.
Hydraulic system / tankReported figures vary by source and likely by configuration. One spec source lists as low as 29.5 L (7.8 US gal) for the base blade-only dozer chassis, while another lists 67.3 L (17.8 US gal). The TSK II's added skidder-arch and grapple circuit likely pushes the in-service system capacity toward the higher end of this range. Treat this as a range and confirm with the sight gauge/dipstick.Cat TDTO is commonly used as a shared hydraulic/powertrain oil on Cat track-type tractors of this era; use Cat HYDO where the machine's own manual calls for a dedicated hydraulic-only fill. Match viscosity grade to ambient temperature as for the powertrain oil.
Pivot / equalizer bar pins (no oil-filled pivot shaft on this high-drive chassis)No oil-fill capacity applies. This elevated-sprocket chassis uses grease-lubricated equalizer bar end pins and a center pin rather than an oil-filled pivot shaft compartment. The center pin has remote grease fittings located near the engine oil filler tube.Cat Multipurpose Grease (NLGI Grade 2, lithium complex). Lubricate equalizer bar end pins on the order of every 250 hours or monthly, and the center pin more frequently, on the order of every 50 hours or weekly, per the machine's lubrication chart.
Grease (general chassis/linkage lubrication points)Not a fluid-volume item; grease is applied per fitting at scheduled intervals per the lubrication chart rather than as a system capacity.Cat Multipurpose Grease, NLGI Grade 2, lithium complex base, for standard chassis and linkage fittings. For heavily loaded pins such as the skidder arch/grapple pivots and track adjuster, a heavier-duty NLGI Grade 2 calcium sulfonate complex grease (Cat's Extreme Application-class product) is the more suitable choice. Do not mix different grease types or brands in the same fitting.

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Caterpillar D4HTSK II maintenance schedule

Service intervalTasks
Every 10 h
  • Walk around the machine before starting and check for fresh fluid leaks, loose fasteners, and track or blade damage
  • Check engine oil level and coolant level, top off as needed before operating
  • Check winch or grapple hydraulic oil level and inspect wire rope, hoses, and cylinders for visible wear or damage
  • Drain water and sediment from the fuel tank and check the primary fuel filter/water separator (weekly)
  • Inspect track tension on each track frame (tri-track or quad-track) and adjust as needed (weekly)
  • Grease blade lift/tilt and winch or grapple mounting pivots (weekly)
Every 250 h
  • Change engine oil and replace the engine oil filter
  • Replace fuel filter elements and bleed the fuel system on the mechanically governed 3204
  • Service the air cleaner: check the restriction indicator, clean or replace elements as needed
  • Lubricate all track roller frame pivots, equalizer bar, and winch or grapple linkage points
  • Check fan belt condition and tension
  • Inspect the 6-way blade cutting edge and end bits for wear
Every 500 h
  • Change powertrain (transmission/bevel gear/final drive) oil and clean magnetic drain plugs
  • Change winch or grapple hydraulic oil and clean or replace the hydraulic filter
  • Check and adjust winch clutch and brake band linkage
  • Inspect undercarriage track shoes, rollers, and idlers for wear and measure track sag on each track frame
  • Clean the radiator core and test coolant condition with a coolant test kit
  • Check alternator, starter, and battery condition, clean terminals
Every 1,000 h
  • Change hydraulic tank oil and hydraulic filter on the blade, winch, and grapple circuits
  • Sample engine oil, coolant, and powertrain oil for lab analysis to track wear trends
  • Inspect the turbocharger for shaft play and check for boost leaks
  • Inspect 6-way blade tilt/angle cylinders and pins for wear, replace as needed
  • Check fuel injection pump timing and governor linkage adjustment on the mechanically governed engine
  • Inspect winch or grapple drive shaft and PTO coupling for wear
Every 2,000 h
  • Adjust engine valve lash on the mechanically governed 3204, since there is no ECM to flag it
  • Inspect and recalibrate fuel injection nozzles and the injection pump
  • Overhaul-inspect winch clutch discs, brake bands, and drum bearings, rebuild as needed
  • Evaluate undercarriage wear across all track frames (links, bushings, sprockets) and plan component replacement
  • Check steering clutches and final drives for wear
  • Inspect engine, radiator, and winch/grapple mounting frame for cracks from logging shock loads
Every 4,000 h
  • Drain, flush, and refill the cooling system with fresh coolant and inhibitor package
  • Replace winch wire rope or grapple hydraulic hoses once wear or kink limits are reached
  • Re-torque undercarriage frame and roller guard fasteners loosened by logging debris impact
  • Rebuild or exchange the winch gearbox or bevel gear set if backlash or noise indicates wear
Every 6,000 h
  • Plan a top-end or in-frame engine overhaul based on oil analysis and compression trends
  • Rebuild track roller frames, replacing rollers, idlers, and sprockets across the tri-track or quad-track assemblies
  • Overhaul the winch or grapple swing drive: bearings, seals, clutch and brake components
  • Rebuild the 6-way blade lift/tilt cylinders, replacing seals and pins

Servicing the D4HTSK II beyond the schedule

Predictive Maintenance & Fluid Analysis

The 3204 in the D4HTSK II runs mechanical governing and injection, so there is no ECM to flag wear early. Oil sampling is the main predictive tool: pull engine oil, powertrain oil, and winch or grapple hydraulic oil at scheduled intervals and track trends in wear metals, soot, and coolant contamination rather than waiting for a failure. Test coolant condition on the cooling system feeding the turbocharged engine, and watch injection pump and winch clutch performance for gradual drift that signals an approaching adjustment or rebuild.

Corrective & Common Repairs

Typical repairs on the D4HTSK II trace back to logging duty cycles: winch wire rope wear and hydraulic hose failures on grapple-equipped units, undercarriage roller, idler, and sprocket wear from running tri-track or quad-track frames through debris and mud, and worn pins and bushings on the 6-way blade linkage from constant trail-clearing use. Because the 3204 is mechanically governed, injection pump timing and governor linkage drift are common corrective adjustments rather than software resets, and fuel filter and water separator service is frequent given typical woods fuel handling.

Overhaul & Rebuild Points

Plan engine top-end or in-frame overhaul on the 3204 around oil analysis and compression trends, since there is no onboard diagnostic history to lean on. Undercarriage rebuilds hit hardest on this model: with tri-track or quad-track frames doing the work of a single dozer track, roller, idler, and sprocket wear accumulates across more contact points and warrants a full frame evaluation at major overhaul time. Winch or grapple swing gearboxes, clutch packs, and brake bands are the other big rebuild point on high-hour logging machines.

Seasonal & Environment Servicing

Cold starts on the mechanically governed 3204 rely on glow plug or ether starting aid, not electronic cold-start strategy, so check that system before winter logging season. Forestry duty packs bark, chips, and mud into the radiator core and around the winch drum or grapple swing bearing; clear debris often to keep cooling airflow and winch cooling adequate. Undercarriage seals on tri-track and quad-track frames take a beating in wet, swampy cutting blocks, so watch for water intrusion at track rollers and idlers between wear-item changes.

D4HTSK II common service parts

Part numberPart
1D-4540Bolt,Machine Fuel Filter MountingCheck fitment →
1P-2299Filter As-FuelCheck fitment →
4N-3294Insert-Fuel FilterCheck fitment →
7W-5389Filter Element As-AirCheck fitment →
8N-4901Filter Element As-AirCheck fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

D4HTSK II fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
EMS panel - Coolant Temperature lamp (upper left position)Engine coolant temperature has risen above the normal operating range.Low coolant level, blocked radiator core or fins, slipping or broken fan belt, failed water pump, or a thermostat stuck closed.Reduce load and let the engine idle to cool. Once safely cooled, check coolant level and radiator core for debris; do not open a hot radiator cap. Inspect belt and water pump if the lamp recurs.
EMS panel - Engine Oil Pressure lamp (center left position)Engine oil pressure has dropped below the safe minimum.Low oil level, plugged oil filter, worn oil pump, or a failed pressure sending switch.Shut the engine down immediately rather than continuing to run. Check oil level and filter condition, and confirm actual pressure with a mechanical test gauge before restarting.
EMS panel - Hydraulic Oil Temperature lamp (lower left position)Hydraulic system oil (arch/blade and implement circuit) is running hotter than normal.Low hydraulic fluid level, a clogged hydraulic oil cooler, a relief valve holding open under sustained load, or extended high-load skidding work.Ease off hydraulic demand and idle to allow cooling. Check fluid level and inspect the cooler for debris or restricted airflow.
EMS panel - Power Train (Transmission) Oil Temperature lamp (upper right position)Torque converter/powertrain oil is overheating.Low transmission oil level, sustained lugging or converter stall under heavy skidding loads, or a restricted power train oil cooler.Reduce load, avoid prolonged converter stall, and return to low idle to cool. Check oil level and cooler airflow once stopped.
EMS panel - Alternator (charging system) lamp (center right position)The charging system is not producing adequate output to the battery.A slipping or broken alternator belt, a failed alternator, a faulty regulator, or a loose/corroded charging circuit connection.Check belt condition and tension first, then battery voltage. Inspect wiring and replace the alternator if output is still absent.
EMS panel - Power Train Oil Filter Bypass lamp (lower right position)The transmission oil filter bypass valve has opened because flow through the filter is restricted.A plugged/dirty transmission filter, extended service interval, or cold, high-viscosity oil not yet warmed up.Let the machine warm up fully before heavy work if the lamp only shows briefly at cold start. If it stays on once warm, replace the transmission filter and check oil condition.
Action alarm lamp with audible buzzer (general fault annunciator)A general warning tone and lamp that activates together with whichever specific EMS gauge light (coolant, oil pressure, power train temp/filter, or alternator) has gone out of range.Any one of the individual monitored conditions above tripping its threshold.Do not silence and ignore the buzzer. Scan the EMS panel to identify which specific lamp is lit and follow that system's own check.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

D4HTSK II attachments & work tools

Blades

Front-mounted dozer blade on the D4HTSK II is a factory 6-way angling/tilting blade, roughly 2.6 m (8 ft 8 in) wide, in line with the machine's own overall-width class. This is the conventional angle blade of that era, not the current S/SU/A/VPAT lineup used on today's small Cat dozers, which postdates this platform and is not documented against this model. Blade doubles as ballast against rear winch or grapple loads and is used for building and clearing skid trails and log landings; published capacity figures for this exact blade are not available, treat width as approximate since it varies slightly across spec listings.

Rippers

The rear of the D4HTSK II is normally occupied by the arch/winch or grapple, so a factory ripper is not part of the standard skidder package. The shared D4H dozer chassis in this size class was offered with both a single-shank ripper (better penetration in rock, hardpan, frozen ground) and a multi-shank parallelogram-style ripper (better for loosening a wider strip of lighter or frozen material); shank weight for this exact size class is not documented, verify with a dealer if retrofitting a ripper to this skidder.

Winches

Cable-equipped units in this size class are commonly fitted with a roughly 22.7 t (50,000 lb) line-pull PTO/hydraulic winch, such as the Carco 50 model, spooled with 5/8 in wire rope; rigged cable length in field service runs to around 30 m (100 ft) or more depending on setup. Grapple-equipped machines substitute a hydraulic swing-type grapple in place of, or alongside, the cable winch, with a root rake sometimes carried as an added rear tool.

Drawbars/counterweights

No separate rear counterweight block is standard equipment; the extended track-roller frame under the rear arch/winch position, combined with the forward dozer blade, gives the fore-aft balance needed to handle a loaded drawbar or a swung grapple, the same design logic used on later Cat track-type skidders in this class. A drawbar-pull rating specific to the D4HTSK II is not published; verify against the shop manual or dealer records for your serial range.

Cab/ROPS guarding for forestry/waste configs

Typical forestry-duty configuration is a fully screened open ROPS canopy, a rollover-protection structure with mesh guarding rather than a sealed cab, which sheds slash and debris while still protecting the operator. An enclosed cab, polycarbonate window guards, and heavier ballistic-rated screening are aftermarket upgrades fitted to machines in this class rather than documented factory options for the II.

Hydraulic arrangement (front/rear tools)

A single engine-driven, piston-type hydraulic pump circuit supplies both the front blade lift/angle/tilt functions and the rear winch or grapple/arch circuit on this class of track skidder. Grapple-equipped units add auto-grab/hold hydraulics to maintain clamp pressure on the log bundle during boom swing, the same basic split used on later Cat track skidders in this size class; exact valve and pump routing for the D4HTSK II itself is not published in public sources, consult the service manual for circuit detail.

All D4HTSK II assemblies by section

Every catalogued assembly group for the Caterpillar D4HTSK II. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
8n-6972 Air Cleaner Gp
2W***57Cup As-Air Cleaner1
7W***89Filter Element As-Air; (Primary)1
8N***01Filter Element As-Air; (Secondary)1
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6n-6622 Air Cleaner Gp
1T***22Bolt-12 Point Head; (3/8-16x0.75-In)(Torsional Coupling To Flywheel)2
2K***73Locknut Inside Guard Assembly6
3V***31Washer; (10.2x16x2-mm Thk)(16mm Od)2
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8g-4464 Guard Gp-Precleaner
5P***14Stud-Weld; (3/8x16x.874in Oal) (22.22mm .875inoal)4
6V***01Nut; (3/8-16-Thd)(Plate To Rh And Lh Bracket As)4
8G***69Guard Assem.1
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6n-6902 Lines Gp-Air
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold1
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting6
0S***07Spacer-Pawl; (13/3 X 3/4 X 25/64in Thk)1
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4w-5025 Lines Gp-Air
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
2M***80Seal--To Connector Pump Outlet1
4W***29Pipe-Outlet; (Compressor)1
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6n-6085 Manifold Gp-Exhaust
6L***23Bolt-High Temperature4
6L***62Stud-Taperlock; (3/8-16x1.77-In)4
6N***85Manifold Group-Exhaust; Exhaust Manifold Group1
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4w-1742 Muffler Gp
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)4
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
11***65Muffler As1
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4m-0310 Precleaner Gp
1M***50Bowl1
1S***63Bolt (5/16)1
4M***10Precleaner As1
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5m-2734 Prescreener Gp
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks1
1M***50Bowl1
4F***74Clamp1
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4w-5118 Shield Gp-Exhaust
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
1D***16Nut,Plain,Hexagon Clip Uoc:Bsv,Bsx2
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6n-5079 Turbocharger Gp
6N***79Turbocharger Group; Turbocharger Group1
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Basic Engine
4w-8593 Housing Gp-Flywheel
0T***19Bolt Hose Assembly At12
2B***58Plug--To Block Upper Front Air Manifold1
4W***92Housing-Flywheel1
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8n-9509 Belt Tightener Gp
2D***23Ring (Internal)1
4K***49Plug-Cup1
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)1
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2w-1337 Camshaft Gp
0L***39Bolt (3/8-24x2.25in); (3/8-24x2.25-In)4
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
1W***02Gear-Camshaft (80 Teeth)1
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1w-1352 Cover Gp-Valve Mechanism
1W***53Cover-Armature Base1
1W***52Cover Group-Valve Mechanism; Valve Mechanism Cover Group1
1W***23Base-Arm Cover1
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7c-0688 Crankshaft Gp
1W***11Bearing-Main; (Intermediate)2
1W***12Bearing (Main, No. 1, 3, 5,)3
1W***71Crankshaft Assem.1
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2w-7902 Cylinder Block As
1A***23Dowel (1" Long)1
1M***35Dowel (.843" Long)1
1W***20Bearing-Camshaft1
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7n-4821 Cylinder Block As
1A***23Dowel (1" Long)1
1M***35Dowel (.843" Long)1
1W***20Bearing-Camshaft1
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6n-9049 Cylinder Block Gp
6N***49Cylinder Block Group; Cylinder Block Group1
7N***21Cylinder Block As1
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7c-3805 Cylinder Head As
2B***58Plug--To Block Upper Front Air Manifold1
5M***13Plug To Turbocharger Lubrication Valve Body Assembly2
5P***45Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate)2
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9y-6111 Cylinder Head As
2N***43Insert-Intake; 47.2mm(1.86in)Id4
8M***60Plug-Cup; (Marked Z)4
9N***37Insert-Seat Exhaust; 41.1mm(1.62in)Id4
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7c-2296 Cylinder Head As
2N***43Insert-Intake; 47.2mm(1.86in)Id4
7C***96Cylinder Head As1
8M***60Plug-Cup; (Marked Z)4
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7w-9394 Cylinder Head Gp
1W***59Spring-Valve8
1W***60Retainer-Spring8
1W***97Washer-Spring Seat8
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6n-2397 Cylinder Head Gp
0L***29Bolt- 7.63 cm(3 In.) Long - Location "H"4
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
1A***64Bolt (4.75 In. Long-Location "B")1
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7c-0399 Drive Gp-Fan
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***825
1D***74Bolt (L.H. Side Flywheel Housing)1
3B***85Fitting-Hydraulic; Fitting 45 Degrees Angle--Used As Required1
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6n-3108 Drive Gp-Fan -Belt
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
1W***38Shaft-Fan1
1W***39Hub-Fan Pulley1
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2w-4002 Drive Gp-Water Pump
1A***36Bolt; (5/16-18x0.687-In)4
2W***02Drive Group-Water Pump; Water Pump Drive Group1
2W***72Pulley-Water Pump1
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4w-5975 Flywheel Gp
2W***45Flywheel As1
4W***75Flywheel Group1
6V***91Bolt-Sealing8
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1w-1355 Gear Gp-Front
0S***17Bolt --Use Open Hole In Compressor Body1
1A***35Bolt 2.00 In. (5.08 cm) Long1
1W***55Gear Group-Front; Front Gear Group1
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1w-1353 Housing Gp-Front
0L***29Bolt- 7.63 cm(3 In.) Long - Location "H"2
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case1
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1w-5554 Lifting Gp-Engine
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
0T***20Bolt (1.25 In. Long X .438 In. Dia.)1
1W***53Plate-Lifting Eye1
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9y-9681 Mounting Gp-Engine Flexible
0L***29Bolt- 7.63 cm(3 In.) Long - Location "H"4
1D***16Bolt 15.24 cm(6 In.) Long2
3B***53Bolt- 114.30 mm(4.50 In.) Long1
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6n-3052 Pan Gp-Oil
0S***18Bolt; (5/16-18x1-In)(Hydraulic Pump)24
1D***38Bolt-Top Tank,Bottom Tank To Accessory4
1W***56Pan As-Oil1
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2w-1040 Piston & Rod Gp
1N***21Bearing-Connecting Rod; (.254mm Us)1
1N***22Bearing-Connecting Rod; (.510mm Us)1
1W***06Bearing-Connecting Rod1
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2w-4841 Piston Gp
2W***31Body As-Piston; (Standard)1
2W***41Piston Group1
2W***65Ring Group-Piston; (Consists Of A Complete1
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7c-3383 Pulley Gp
1W***24Pulley-Crankshaft1
4W***27Pulley-Alternator1
6V***01Nut; (3/8-16-Thd)(Plate To Rh And Lh Bracket As)6
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6n-5094 Pulley Gp
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)6
0T***73Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.)6
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks6
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6n-7205 Pulley Gp-Auxiliary Drive
4W***80Pulley-Crankshaft1
5L***75Key1
6N***05Pulley Group-Auxiliary Drive; Auxiliary Drive Pulley Group1
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9y-9677 Support Gp-Engine
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case1
1A***64Bolt (4.75 In. Long-Location "B")3
4S***91Washer To Mainshaft Lube Cap4
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1w-5720 Valve Mechanism Gp
1D***40Bolt,Machine Fuel Filter Mounting4
1W***18Bracket-Shaft1
1W***20Valve Mechanism Group; Valve Mechanism Group1
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Cooling System
9n-5659 Cooler Gp-Engine Oil
9L***81Divider-Core1
9N***33Core As-Oil Cooler1
9N***59Cooler Group-Engine Oil1
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1w-8094 Cooler Gp-Engine Oil
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
11***89Gasket-Oil Cooler1
11***51Hose-Engine Oil Cooler1
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6n-2336 Fan Gp-Blower
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case8
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case8
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks2
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2w-8458 Fan Gp-Reversible
12***21Fan As-Reversible1
2W***25Plate1
2W***84Guard As-Fan1
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4n-0188 Lines Gp-Water
00***40Connector; (Flared)1
1N***99Tube Assem.(Cooling System Vent)1
1W***24Clamp-Hose1
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4n-0660 Pump Gp-Water
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
1W***46Shaft-Water Pump1
1W***47Spacer1
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9y-5162 Radiator Gp
1F***48Nut 12.70 mm(.50 In.) Thread2
2W***55Strap As (To Core As)4
2W***36Channel As; (Each Includes)2
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9y-7326 Radiator Gp
2W***36Core As-Radiator; (Folded Core)5
2W***63Strap Assem.4
2W***36Channel As; (Each Includes)2
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7e-4751 Radiator Gp
4p-0254 Radiator Gp
1W***20Block2
3J***90Plug Adapter Turbo Oil Supply; Plug-Adapter Turbo Oil Supply1
3Y***12Clip4
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4p-7041 Radiator Gp
1F***48Nut 12.70 mm(.50 In.) Thread2
2W***55Strap As (To Core As)4
2W***36Channel As; (Each Includes)1
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8n-7031 Radiator Gp-Folded Core
1W***20Block2
3J***90Plug Adapter Turbo Oil Supply; Plug-Adapter Turbo Oil Supply1
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)4
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4p-7042 Radiator Gp-Multirow Module
1F***48Nut 12.70 mm(.50 In.) Thread2
2W***55Strap As (To Core As)4
2W***44Boss; (5/16-18-Thd)4
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Electrical And Starting System
9x-6775 Lamp Gp-Flood
8T***37Screw; (Machine) (M4x0.7x12mm)2
9X***55Body As-Lamp1
9X***63Lamp-Halogen; (24-Volt, 70-Watt)(Floodlight)1
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9x-6774 Lamp Gp-Flood
8T***37Screw; (Machine) (M4x0.7x12mm)2
8T***21Washer-Hard; (11x21x2.5-mm Thk)(M10x1.50x30mm)1
8T***33Nut (M10x1.50 Thd)1
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9x-1439 Lamp Gp-Flood
8T***37Screw; (Machine) (M4x0.7x12mm)2
9X***39Lamp Group-Flood; -Rear-Ladder Access-Engine Work Light1
9X***55Body As-Lamp1
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3t-9343 Switch Gp-Filter Bypass
1S***17Ring-Retaining2
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)1
3N***48Spring1
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9g-9813 Alarm Gp
7N***79Socket-Governor Solenoid Wire To Housing1
7N***80Pin-Connector; (14-Ga To 18-Ga)1
7N***37Housing-To Air Start Solenoid Valve1
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6t-7223 Alternator Gp-Charging
1B***05Key; (Woodruff)1
1H***44Lockwasher (Bracket To Cab)1
2H***20Lockwasher (11.38mm Id)1
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4y-3566 Alternator Gp-Charging
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine1
0T***73Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.)1
1B***05Nut--Neutral Connection2
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9g-9538 Alternator Gp-Charging
1B***05Key; (Woodruff)1
2K***21Locknut (5/8-18 Thd)1
3T***85Coil As-Field1
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3t-1888 Alternator Gp-Charging
1L***89Lockwasher1
2K***21Locknut (5/8-18 Thd)1
2P***16Frame; (Drive End)1
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5s-9088 Alternator Gp-Charging
3T***88Alternator Group-Charging; Alternator Group Delco-Remy 24 Volt, 50 Ampere1
5S***88Alternator Group-Charging1
6T***23Alternator Group-Charging; Alternator Group-Nippondenso -- 24 Volt, 50 Ampere1
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8g-3915 Battery & Wiring Gp
03***55Locknut; (5/16-18-Thd)(Marked X)4
03***63Clip-Wire1
03***97Boot1
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8e-6260 Lighting Gp
1F***50Nut Rops Support1
1V***09Grommet 11.17 mm(.44 In.) Thick)1
3K***82Fuse; (10-Ampere)1
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8e-2378 Lighting Gp
3K***82Fuse; (10-Ampere)1
4K***22Holder As. (Fuse) (Each Includes)1
5M***62Bolt; (3/8-16x0.75-In)7
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8e-2377 Lighting Gp
1V***09Grommet 11.17 mm(.44 In.) Thick)1
3K***82Fuse; (10-Ampere)1
3S***93Strap-Cable-To Tie Harnesses Together5
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8p-8669 Starting Aid Gp-Ether
2H***22Lockwasher1
2V***13Tag-Notice; (Starting Aid)(Ether)1
3B***01Lockwasher (Part Of 3f***99 Switch)1
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8c-3594 Starting Motor Gp-Electric
03***21Shim Lever Housing1
03***23Bolt; (1/4-28x1-In)5
1H***29Plate,Insulation Starter Motor Assembly2
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6v-4645 Starting Motor Gp-Electric
5C***74Nut (M5x.8 Thd); (M5x0.8-Thd)2
6V***45Starting Motor Group-Electric1
7X***62Washer-Hard; (13.5x19x0.8-mm Thk)5
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3t-2764 Starting Motor Gp-Electric
3T***71Starting Motor Group-Electric; Electric Starting Motor Group1
3T***64Starting Motor Group-Electric1
6V***41Starting Motor Group-Electric1
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6v-4641 Starting Motor Gp-Electric
6V***41Starting Motor Group-Electric1
6V***45Starting Motor Group-Electric1
6V***46Starting Motor Group-Electric1
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6v-4940 Starting Motor Gp-Electric
3E***25Cover As; (Starting Motor)1
3E***27Kit-Bearing; (Starting Motor)(Incl Bearing Seals & Spacers)1
3E***28Kit; (Brush) (Includes O-Rings, Screw, Spring, & Brush)1
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6n-1678 Starting Motor Gp-Electric
2L***54Terminal-Ring; (6-Ga, 1/2-In Screw)2
3T***64Starting Motor Group-Electric1
4H***69Gasket Starter Mtg Part Of Kit P/N 5r***251
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3t-2371 Starting Motor Gp-Electric
1D***19Nut-Retainer To Fan Bracket Assembly2
2H***80Screw-Drive; (No 2x0.125-In)2
2L***67Terminal-Ring; (10-Ga To 12-Ga, 1/4-In Screw)1
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6v-4646 Starting Motor Gp-Electric
03***21Shim Lever Housing1
03***23Bolt; (1/4-28x1-In)5
2H***29Ring - Retaining External1
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9x-4454 Starting Motor Gp-Electric
3E***27Kit-Bearing; (Starting Motor)(Incl Bearing Seals & Spacers)1
3E***28Kit; (Brush) (Includes O-Rings, Screw, Spring, & Brush)1
3E***29Kit; (Hardware) Includes Washers, Bolts, Lockwashers, Nuts, Bushings, & Plate)1
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7n-0718 Switch Gp-Disconnect
2H***22Lockwasher2
6F***45Nut-Full; (3/8-24-Thd)2
7N***18Switch As-Disconnect; -Battery-Ground Level1
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7n-8001 Switch Gp-Toggle
3L***87Lockwasher 7.24mm(.285in.)O.D.; (3.7x7.24x.48mm Thk)2
6T***31Nut-Hexagon-(15/32-32 Thd)2
6T***32Lockwasher 15.08mm(.59in.)O.D.1
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9x-7781 Switch Gp-Bypass -Filter
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)1
4B***43Nut,Plain,Hexagon Plate Mtg2
4B***63Washer; (4.7x11x1.2-mm Thk)2
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3w-6895 Switch Gp-Power Train Oil Temp
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain1
3T***25Switch As; (Power Train Temp)1
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9g-7641 Switch Gp-Start
6V***62Screw-Machine; (8-32x0.31-In)4
7T***99Nut-Mounting; (1-32-Thd)1
9B***33Lockwasher; (Int'L Tooth)4
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9n-4838 Warning Gp-Backup
3K***82Fuse; (10-Ampere)1
3S***93Strap-Cable-To Tie Harnesses Together2
3T***15Alarm Group; (Backup)(Back-Up)1
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3w-6641 Wiring Gp-Hydraulic
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain1
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3w-7439 Wiring Gp-Air Conditioner
3T***48Clip Assembly - Housing Plug To Housing Recp.1
3W***39Wiring Group-Air Conditioner1
4D***94Clip-- Compressor Clutch Wire To Compressor Body2
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Engine Arrangement
7e-2301 Engine Ar
1W***52Cover Group-Valve Mechanism; Valve Mechanism Cover Group1
1W***53Housing Group-Front; Front Housing Group1
1W***54Lines Group-Fuel Injection; Fuel Injection Lines Group1
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Frame And Body
9n-4810 Case & Frame Gp
2H***32Seal--To Bottom Cover On Selector Valve1
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)1
4T***69Plug-Drain1
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3w-6707 Door Gp-Hood Side
2V***74Handle Assem.4
2V***76Pin4
2V***34Ring1
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9n-4817 Enclosure Gp
1F***48Nut 12.70 mm(.50 In.) Thread21
3V***62Catch1
3W***10Plate As; (Rh)1
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9n-4837 Fender Gp
1F***48Nut 12.70 mm(.50 In.) Thread4
3P***38Strip-Wear2
3W***09Fender As; (Lh)1
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3w-3005 Floorplate Gp
3W***05Floorplate Group1
3W***37Support Assem. (L.H.)1
3W***30Support Assem. (R.H.)1
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8e-5543 Floorplate Gp
3W***37Support Assem. (L.H.)1
3W***30Support Assem. (R.H.)1
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)10
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8y-0088 Grill Gp
9n-4809 Guard Gp-Bottom
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)2
6Y***25Spacer6
7X***44Bolt-Plt; (5/8unc X 1 3/8)6
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9n-4835 Guard Gp-Radiator
1F***48Nut 12.70 mm(.50 In.) Thread13
1K***50Spring1
3J***69Nut (Part Of 4s***81 Assem.)8
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9n-4826 Guard Gp-Rear -Grapple
1K***50Spring1
1S***08Plate1
3W***47Door1
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3w-6463 Guard Gp-Rear
1K***50Spring1
3W***47Door1
3W***00Cover As1
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8g-5237 Guard Gp-Track Guide
3K***89Locknut; (5/8-11-Thd)4
5P***25Bolt; (5/8-11x11-In)4
6K***40Spacer8
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8y-0345 Guard Gp-Track Roller
3K***89Locknut; (5/8-11-Thd)10
5P***25Bolt; (5/8-11x11-In)10
6K***40Spacer40
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9w-3673 Guard Gp-Winch
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard6
5M***27Block4
5P***45Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate)6
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8g-2451 Hood Gp
2M***95Pin,Straight,Headed2
3B***07Cotter--Yoke Assembly2
3W***14Angle4
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7g-5893 Hook Gp-Front Pull
5P***76Washer Guard To Support Assembly And Guard Assembly4
7B***65Plug-Tube Assembly-- Water Pump To Oil Cooler1
7G***93Hook Group-Front Pull1
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9n-4812 Panel Gp-Side
03***12Rivet (To Fuel Tank)5
3W***97Strip1
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)12
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9n-4818 Platform Gp
2N***58Rivet-Pop14
2Y***79Plug1
3W***97Handle-Grab1
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6y-3390 Sweep Gp
1P***72Spacer; (1.031x1.219x0.75-In Thk)8
2H***91Nut4
3W***73Plate2
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Fuel System
5g-3612 Cap Gp-Protection
1P***80Cap-Filler; (Fuel Tank)1
3B***15Pin,Cotter Governor And Decelerator Control2
4J***05Shim; (0.79-mm Thk)(.031 In Thk)2
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8g-3913 Control Gp-Decelerator
1A***90Washer [1.66mm(.0650 In.)Thick]2
1B***06Key-Woodruff1
3B***07Cotter--Yoke Assembly2
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8g-2447 Control Gp-Governor
03***25Coupler1
09***15Washer-Hard; (20x35x1.6-mm Thk)1
1B***04Key,Woodruff Governor And Decelerator Control2
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7c-8995 Fastener Gp-Fuel Inj Pump
0S***14Bolt (.25" Diameter-.50" Long)2
2S***83Bolt (3.25" Long-Drilled Head)1
4F***57Screw,Cap,Hexagon H Shock Mount To Bracket6
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9y-0215 Filter & Lines Gp-Fuel
00***49Connector-Second Type1
00***29Tee1
0S***87Bolt-Bracket Assembly To Timing Gear2
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8h-4681 Filter Gp-Primary Fuel
1L***69Ring-Retaining1
1N***83Base-Fuel Filter1
2H***29Ring - Retaining External1
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7w-2217 Pump Gp-Gov & Fuel Inj
03***79Seal-O-Ring (Id=10.82mm)1
0S***14Bolt (.25" Diameter-.50" Long)2
0S***16Screw,Cap,Hexagon H Receptacle Mtg; Bolt Brackets To Firewall Assembly2
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1w-8730 Governor Gp
03***16Bolt-Self Locking; (1/4unc X 3/4)3
0S***16Screw,Cap,Hexagon H Receptacle Mtg; Bolt Brackets To Firewall Assembly6
13***07Seal-Lip Type; (6.39mm)1
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8g-4060 Lines Gp-Fuel
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve6
3J***54Packing,Preformed Part Of Kit P/N 5r***272
3W***22Plate1
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1w-1354 Lines Gp-Fuel Injection
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender1
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case1
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
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7n-0042 Lines Gp-Fuel Injection
1H***23Packing,Preformed Part Of Kit P/N 5r***258
1W***42Adapter As-Fuel Inj4
1W***21Line As-Fuel Injection; (No. 1)1
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1w-6539 Pump Gp-Fuel Injection
1W***39Pump Group-Fuel Injection1
1W***41Plunger And Barrel Assem, Including:1
1W***87Valve As-Check; (Fuel Injection Pump)1
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4w-0469 Pump Gp-Fuel Injection
0S***15Bolt 19 mm (.75 In.) Long Return Air Console To Enclosed Rops4
1S***53Bearing-Rack; (Rear)1
1S***40Dowel; (Dim 4.755mm)4
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4n-4314 Pump Gp-Fuel Priming
10***08Pump As; (Fuel Priming)1
1B***90Bolt; (5/16-18x1.375-In)(Rh Front Cover)1
1H***14Bolt,Machine Engine Oil Filter Assembly1
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2w-4403 Pump Gp-Fuel Transfer
0S***15Bolt 19 mm (.75 In.) Long Return Air Console To Enclosed Rops2
1W***68Pump Group-Fuel Transfer1
2W***03Pump Group-Fuel Transfer; Fuel Transfer Pump Group1
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1w-0568 Pump Gp-Fuel Transfer
03***95Connector-Flared1
1W***57Cover-Transfer Pump1
1W***65Ring-Retaining1
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9n-4819 Tank Gp-Fuel
3F***34Baffle; (Fuel Tank Fill Cap)1
4B***23Gasket-Baffle1
4B***49Filter Element-Fuel; (Fuel Cap)2
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4w-5063 Torque Control Gp
1P***52Insulator,Bushing Governor1
2P***85Spacer (.635 mm Thk); (0.635-mm Thk)1
2W***34Bar-Load Stop; (4.0mm Thk)1
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3t-9926 Valve Gp-Pressure Control
0S***17Bolt --Use Open Hole In Compressor Body8
1A***12Spring (Inner)1
2F***60Flange1
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Hydraulic System
9g-9288 Cover Gp-Hydraulic Tank Cap
1L***72Dowel (Part Of 8s***99 Assem.)1
2J***61Ring-Retaining1
5D***11Cover-Hydraulic Cap1
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8g-4479 Control Gp-Hydraulic Hand
1B***76Pin,Straight,Headed Governor And Decelerator Control2
2K***73Locknut Inside Guard Assembly1
2L***67Locknut; (3/8-24-Thd)1
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8g-4480 Control Gp-Hydraulic Hand
03***55Locknut; (5/16-18-Thd)(Marked X)1
1B***76Pin,Straight,Headed Governor And Decelerator Control2
3B***15Pin,Cotter Governor And Decelerator Control2
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8g-4481 Control Gp-Hydraulic Hand
03***55Locknut; (5/16-18-Thd)(Marked X)3
1B***76Pin,Straight,Headed Governor And Decelerator Control3
1B***04Key,Woodruff Governor And Decelerator Control1
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9n-4828 Control Gp-Hydraulic Hand
03***55Locknut; (5/16-18-Thd)(Marked X)2
1B***76Pin,Straight,Headed Governor And Decelerator Control3
1B***04Key,Woodruff Governor And Decelerator Control1
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8c-9429 Cylinder Gp-Grapple
1K***95Washer (Leather)1
2H***28Seal-Top Cover & Filter Group1
3K***92Ring-Back-Up2
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8c-9412 Cylinder Gp-Grapple
1H***28Seal (3.73 In. Inside Diameter)1
2K***30Ring-Back-Up1
3K***15Seal-O-Ring (Id=101.27mm)1
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9t-9247 Cylinder Gp-Angling
0S***73Bolt 50.80 mm(2 In.) Long1
2H***31Packing,Preformed Plate Part Of Kit P/N 4j***801
2H***49Ring; (Retaining)2
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100-6174 Cylinder Gp-Angling
10***29Piston Assem.1
10***31Washer1
10***34Spacer1
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6e-0366 Cylinder Gp-Arch Lift -2 Required
13***11Kit-Seal1
15***51Seal-Lip Type1
1U***63Bearing1
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6e-0365 Cylinder Gp-Lift
1H***27Seal 10.1 cm(3.984 In.) I.D.1
3B***89Fitting-Grease; (Fan And Alternator Drive)1
3S***49Washer-Hard; (31x52.5x6-mm Thk)1
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9t-9557 Cylinder Gp-Tilt
13***62Kit-Hydraulic Cylinder Seal1
1H***27Seal 10.1 cm(3.984 In.) I.D.1
1K***85Ring Part Of Kit P/N 1w***461
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8c-9430 Hydraulic Gp-Grapple
0S***89Bolt, Hex. Hd., 5/8"-11 N.C. X 1 3/4"4
0S***03Bolt,Machine Fuel Pump Drive Gear Mounting4
3B***08Lockwasher Handrails To Dash4
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8c-9416 Hydraulic Gp-Grapple
0S***89Bolt, Hex. Hd., 5/8"-11 N.C. X 1 3/4"4
0S***03Bolt,Machine Fuel Pump Drive Gear Mounting4
3B***08Lockwasher Handrails To Dash4
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8g-4485 Lines Gp-Angle & Tilt
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)4
3P***03Clip--(Tab)1
3P***04Clip (Slotted)1
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1u-2387 Lines Gp-Angle & Tilt
1K***72Locknut Horn To Guard6
1U***87Lines Group-Angle & Tilt; Angle And Tilt Lines Group1
2K***73Locknut Inside Guard Assembly2
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9n-4813 Lines Gp-Grapple
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)6
3P***03Clip--(Tab)2
3P***04Clip (Slotted)2
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9n-4825 Lines Gp-Grapple
2J***30Strap,Retaining2
2J***31Clamp,Spacer,Hose Tilt Cylinder Hose4
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)2
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8g-4484 Lines Gp-Lift Cylinder
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)6
3P***03Clip--(Tab)2
3P***04Clip (Slotted)2
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6y-7232 Lines Gp-Oil
03***64Nipple1
0S***13Bolt-- Contactor To Bracket1
1A***50Clip-- Throttle And Choke Wire1
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9n-4822 Lines Gp-Pump
13***45Clip-Loop1
1P***05Seal (Check Valve Outlet)1
1S***15Conduit Clip (Use As Required)7
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3t-4961 Lines Gp-Winch
00***98Elbow (For Use With Deep Pan)1
03***68Elbow (For Use With Shallow Pan)3
3T***61Lines Group-Winch1
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8g-4494 Lines Gp-Winch
1P***05Seal (Check Valve Outlet)1
1P***06Seal; 57.9mm(2.28in.)I.D.2
1P***76Flange-Half (Hose To Pump); Flange-Half (32.54mm Bore)2
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9n-4829 Mounting Gp-Valve
4L***37Hex Head Capscrew, 3/8 Nc X 1 1/2 In. (38 mm)3
5G***14Boss1
5P***75Washer-Hard; (10.2x22.5x3-mm Thk)(Shield To A/C)4
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8g-4478 Mounting Gp-Valve
3T***90Boss1
3W***74Plate Assem.1
4L***37Hex Head Capscrew, 3/8 Nc X 1 1/2 In. (38 mm)3
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3g-8931 Pin Gp
3G***31Pin Group; Cylinder Pin Group1
4T***31Retainer2
4T***25Pin2
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9t-4104 Pump Gp-Piston
6K***07Seal-O-Ring; (43.69mm Id)1
8T***82Elbow-90 Degree1
9T***90Pump Group-Piston1
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7g-5720 Pump Gp-Gear
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler2
7G***19Pump Group-Gear1
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7g-5719 Pump Gp-Gear
2P***37Cover As-Oil Pump1
2S***31Bearing (Part Of 1p***87 Assem.)4
3V***31Washer; (10.2x16x2-mm Thk)(16mm Od)4
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9t-0290 Pump Gp-Piston
00***55Ring-Retaining1
00***93Seal-O-Ring (Id=52.07mm); (52.07-mm Id)2
2M***80Seal--To Connector Pump Outlet1
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9t-2031 Rotating Gp-Pump
00***83Ring-Snap1
9T***31Rotating Group-Pump; -Steering, Pilot1
9T***57Pin3
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1u-2741 Tank & Filter Gp-Hydraulic
1D***88Washer1
1H***03Spring-Governor; (Outer)1
1U***41Tank & Filter Group1
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6e-0364 Valve Gp-Bank
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks3
1U***45Valve Group-Control1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
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9t-9183 Valve Gp-Bank
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks3
1U***45Valve Group-Control1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
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6e-4701 Valve Gp-Check
6E***01Valve Group-Check; -Pilot Oil1
6E***21Valve Group-Check1
6E***22Valve Group-Check1
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6e-0363 Valve Gp-Control
03***14Bolt-Self Locking; (1/4unc X 1/2)2
03***85Bolt 5t***57 Plate As To Fuel Pump Group1
1P***63Seal-O-Ring1
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6e-0362 Valve Gp-Control
03***14Bolt-Self Locking; (1/4unc X 1/2)2
03***85Bolt 5t***57 Plate As To Fuel Pump Group1
1P***63Seal-O-Ring1
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9t-6697 Valve Gp-Control
03***14Bolt-Self Locking; (1/4unc X 1/2)2
1P***63Seal-O-Ring1
1U***44Valve Group-Check1
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9t-9182 Valve Gp-Control
03***14Bolt-Self Locking; (1/4unc X 1/2)2
03***85Bolt 5t***57 Plate As To Fuel Pump Group1
1P***63Seal-O-Ring1
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1u-2745 Valve Gp-Control
03***14Bolt-Self Locking; (1/4unc X 1/2)2
03***85Bolt 5t***57 Plate As To Fuel Pump Group1
1P***63Seal-O-Ring1
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6e-0361 Valve Gp-Control
03***14Bolt-Self Locking; (1/4unc X 1/2)2
03***85Bolt 5t***57 Plate As To Fuel Pump Group1
1P***63Seal-O-Ring1
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9t-6859 Valve Gp-Press & Flow Cmpnstr
1J***71Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter1
2S***00Dowel1
3F***52Ball (Small)1
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9t-6695 Valve Gp-Relief
4K***88Seal; Adapter To Oil Pump Outlet Manifold1
7M***01Dowel (2" Long)1
9T***57Plug1
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6e-0359 Valve Gp-Relief
4K***88Seal; Adapter To Oil Pump Outlet Manifold1
6E***58Ring-Back-Up1
6E***59Valve Group-Relief1
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6e-0772 Valve Gp-Relief
4K***88Seal; Adapter To Oil Pump Outlet Manifold1
6E***58Ring-Back-Up1
6E***72Valve Group-Relief; -Pilot Oil Pressure-Line, Blade Angle1
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6e-0360 Valve Gp-Relief
2M***80Seal--To Connector Pump Outlet1
5P***99Ring-To Clutch Piston Pins1
6E***60Valve Group-Relief1
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3t-9924 Valve Gp-Selector & Press Cont
1F***11Bolt 3.50 In. (8.89 cm) Long6
3B***63Nipple-Pipe1
3T***24Valve Group-Selector & Press Cont1
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3t-9927 Valve Gp-Selector & Press Cont
0S***17Bolt --Use Open Hole In Compressor Body2
1A***12Spring (Inner)1
1D***39Bolt-Top Tank,Bottom Tank To Accessory2
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Implements
3g-9308 Bit & Cutting Edge Gp
2J***06Nut Front Support To Frame; Nut-Front Support To Frame20
3G***06Edge-Cutting2
3G***08Bit & Cutting Edge Group1
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9u-8855 Blade As
1U***80Bracket1
4T***72Trunnion1
6Y***85Sleeve1
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6y-6089 Blade Gp-Angling
1U***80Bracket1
3G***17Pin1
3G***08Bit & Cutting Edge Group1
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9n-4804 Bulldozer Ar-Angling
1U***87Lines Group-Angle & Tilt; Angle And Tilt Lines Group1
3G***31Pin Group; Cylinder Pin Group1
6E***65Cylinder Group-Lift2
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3t-9925 Bypass Gp-Filter
0S***17Bolt --Use Open Hole In Compressor Body4
1H***00Pin--To Compression Release Shaft1
2M***41Slug1
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6y-6953 C-Frame Gp
2G***75Washer; (1.78x4x0.19-In Thk)(4.78mm .188in Thk)4
2G***76Washer; (1.781x4x0.06-In Thk)(1.52mm .060in Thk)12
3G***87Collar1
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6y-7231 Case & Covers Gp-Winch
0L***24Gasket Drain Tube Bushing To Flywheel Housing1
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold46
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case4
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9u-8162 Case & Covers Gp-Differential
0L***24Gasket Drain Tube Bushing To Flywheel Housing1
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold46
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case4
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9w-4638 Case & Covers Gp-Winch
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case22
2D***90Plug-Magnetic1
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain1
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8e-0305 Clutch & Gear Gp
06***11Ring-Retaining2
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold6
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)8
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9w-4637 Clutch & Gear Gp
00***01Cone-Bearing4
03***01Washer1
0L***01Nut; (1-1/2-12-Thd)1
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9n-4827 Control Gp-Grapple
03***55Locknut; (5/16-18-Thd)(Marked X)1
1B***76Pin,Straight,Headed Governor And Decelerator Control6
1F***03Clevis,Rod End Governor And Decelerator Control1
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9n-4814 Control Gp-Winch
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)3
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve5
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain5
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6y-9514 Control Gp-Winch
11***63Sleeve1
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks1
2V***82Spring1
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3w-5721 Control Gp-Winch
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter20
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly6
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3t-9923 Control Gp-Winch
00***03Seal-O-Ring1
03***10Bearing As-Needle2
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case3
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6y-7225 Conversion Gp-Winch
6Y***25Conversion Group-Winch; Winch Conversion Group1
7G***56Gear --To Pinion1
7G***60Gear-Input; (30-Teeth)1
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7g-4789 Cover Gp-Shipping
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
1P***77Flange-Half (For Tilt Ports On Valve)2
1P***79Flange (Half)2
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8c-9372 Crosshead Gp
111-3394 Crosshead Gp
10***64Crosshead As1
10***65Crosshead1
11***94Crosshead Group1
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6t-1531 Fairlead Gp-Winch
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case6
3B***47Pin-Cotter; (Cotter)2
3B***89Fitting-Grease; (Fan And Alternator Drive)6
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9n-4824 Frame Gp-Grapple
1U***63Bearing2
2B***94Dowel Rear Bracket Assembly To Frame; Dowel-Rear Bracket Assembly To Frame2
2J***30Strap,Retaining4
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9n-4947 Frame Gp-Grapple
1U***63Bearing2
2B***94Dowel Rear Bracket Assembly To Frame; Dowel-Rear Bracket Assembly To Frame2
2J***30Strap,Retaining4
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9n-4872 Grapple Ar
6E***64Valve Group-Bank1
6E***66Cylinder Group-Arch Lift; -2 Required2
9N***13Lines Group-Grapple1
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8c-7945 Grapple Ar
8C***45Grapple Ar1
8C***03Grapple As-100"1
8C***10Installation As-Boom1
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9n-4806 Grapple Ar
6E***64Valve Group-Bank1
6E***66Cylinder Group-Arch Lift; -2 Required2
9N***06Grapple Ar1
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9u-9726 Grapple Ar
11***61Hose As1
11***63Hose As1
11***64Sleeve-Protection1
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8c-7944 Grapple Ar
8C***44Grapple Ar1
8C***02Grapple As-82"1
8C***10Installation As-Boom1
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9u-9727 Grapple Ar
11***61Hose As2
11***63Hose As2
11***64Sleeve-Protection1
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8c-9303 Grapple Gp
01***89Bolt; (1/2-13x0.75-In)2
0L***72Bolt 1.91 cm(.75 In.) Long2
0S***92Bolt--Cover To Flywheel Housing4
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8c-9302 Grapple Gp
01***89Bolt; (1/2-13x0.75-In)2
0L***72Bolt 1.91 cm(.75 In.) Long2
0S***73Bolt (102mm Long); (1/2-13x4-In)2
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7t-9865 Installation Ar-Winch
3B***88Coupling,Pipe Breather1
3W***21Control Group-Winch1
7G***20Pump Group-Gear; Pump Gp-1 Section1
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8c-9310 Crosshead Gp
12***80Valve-Relief1
5G***86Bearing-Sleeve4
8C***10Installation As-Boom1
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8c-9401 Motor Gp-Hydraulic
8C***01Motor Group-Hydraulic; -Grapple Rotation1
8C***39Bolt4
8C***40Seal1
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7g-6859 Mounting Gp-Winch
0S***56Bolt 4 1/4 In. (108 mm) --Front Support Assembly To Frame12
5P***48Washer--Bracket To L.H. Support Rail12
7G***59Mounting Group-Winch; Winch Mounting Group1
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7g-5664 Screen Gp-Magnetic
7G***64Screen Group-Magnetic; Magnetic Screen Group1
8S***29Filter-Magnetic; (Torque Converter Scavenge)1
8S***30Screen-Suction; (Torque Converter Scavenge)1
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8e-2737 Singletree Gp
3B***85Fitting-Hydraulic; Fitting 45 Degrees Angle--Used As Required2
3G***32Pin2
4J***05Washer; (1.781x2.5x0.12-In Thk)6
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8e-3350 Valve Gp-Winch
0S***17Bolt --Use Open Hole In Compressor Body4
0T***02Bolt; (3/8-16x0.625-In)(Shield To Head)6
2P***71Spool-Control1
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9w-4574 Winch Ar
3T***61Lines Group-Winch1
4B***58Screw (Identification Plate) Mounting4
5P***40Hose 66.04 cm (24 In.)1
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8e-0306 Winch Ar-Towing
6Y***25Conversion Group-Winch; Winch Conversion Group1
8E***04Winch Ar-Towing1
8E***06Winch Ar-Towing1
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8e-0304 Winch Ar-Towing
3T***23Control Group-Winch1
6V***32Plate & Film Group1
6Y***32Lines Group-Oil; Winch Oil Lines Group1
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Lubrication System
1w-7298 Breather Gp
1W***98Breather Group; Breather Gp-Crankcase1
3H***32Bolt 11.43 cm(4.50 In.) Long1
4K***90Washer; (8.6x17.3x1.6-mm Thk)1
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7e-0337 Filler Gp-Engine Oil
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
2A***11Washer; (5.5x12.3x0.8-mm Thk)1
2P***17Hasp-Oil Filler1
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9y-2298 Filler Gp-Engine Oil
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
4N***33Gasket-Cylinder Block (R.H. Side)1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler2
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8n-5930 Filter Gp-Engine Oil
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)2
1R***14Filter As-Engine Oil1
2M***80Seal--To Connector Pump Outlet1
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7n-6497 Fumes Disposal Gp
1S***51Support1
2S***40Clamp-Hose To Nipple1
3S***41Clip1
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7n-5438 Gauge Gp-Oil Level (Dipstick)
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)1
5S***83Capscrew; (Hex Hd) (3/8-16 Unc X 1.75 Gr8)1
6V***01Nut; (3/8-16-Thd)(Plate To Rh And Lh Bracket As)1
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6n-7196 Lines Gp-Turbocharger Oil
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender1
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly1
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case2
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2w-2833 Pump Gp-Engine Oil
0S***17Bolt --Use Open Hole In Compressor Body1
0S***18Bolt; (5/16-18x1-In)(Hydraulic Pump)4
1A***79Capscrew (5/16 - 18 Nc X 1 1/2 Gd5, Hex)1
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Operator Station
6w-1506 Adjuster Gp-Seat
4B***72Washer4
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)4
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler4
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6w-8505 Adjuster Gp-Seat
01***89Bolt; (1/2-13x0.75-In)1
1B***82Spacer1
4V***50Plate-Slide Track1
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9v-8786 Seat Gp
5P***57Sleeve (Not Shown)1
5P***58Sleeve; (Cable Splice)1
5V***74Screw-Forming; (10-16x0.625-In)4
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8y-5976 Seat Gp -Vinyl
06***03Shim (.060mm Thk); (1.52-mm Thk)4
09***78Pin-Spring1
10***21Pan Group-Backrest; -Seat Back1
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8g-6474 Seat Gp
03***35Bolt-Self Locking; 2.22cm(.875 In.) Lg4
03***23Screw6
5M***62Bolt; (3/8-16x0.75-In)4
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9c-5986 Seat Gp-Suspension -Cloth
03***71Capscrew, Csk. Hd., 3/8in.-16 N.C. X 1in.2
10***65Pin1
2K***73Locknut Inside Guard Assembly6
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8e-1304 Air Conditioner Ar
10***76Air Conditioner Group, . Body1
3W***39Wiring Group-Air Conditioner1
4P***42Radiator Group-Multirow Module1
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100-4976 Air Conditioner Gp
10***76Air Conditioner Group, . Body1
1V***13Clip (Small)1
2A***11Washer; (5.5x12.3x0.8-mm Thk)1
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6t-3389 Air Conditioner Gp
1V***13Clip (Small)1
2A***11Washer; (5.5x12.3x0.8-mm Thk)1
2G***01Valve1
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6t-3387 Blower Gp-Cab
11***94Wheel-Blower; (Ccw)1
11***95Wheel-Blower; (Cw)1
1M***30Nut And Lock Assem.; (No. 10-32)4
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8g-7277 Bottle Gp-Window Washer
3W***76Washer Group1
5S***79Hex Head Capscrew, 3/8 Nc X 7/8 In. (22 mm)2
6V***96Seal .21 M (8.27 In.) Each0
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8y-0689 Cab Ar
3W***51Step Group; Step Group1
3W***51Heater Ar-Cab1
3W***88Instrument Group; Instrument Group1
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8g-7276 Cab Ar
8G***34Cab Group; Cab Group1
8G***36Liner Group-Cab; Cab Liner Group1
8G***37Washer Group-Windshield1
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8g-4534 Cab Gp
00***92Screw-Washer Head; (1/4-20x0.5-In)4
1B***35Key-Woodruff2
1H***03Screw As-Machine3
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7t-8600 Compressor Gp-Refrigerant
1B***02Key-- Adapter To Compression Release Shaft1
1H***38Lockwasher, External Tooth (1/4); W/O Freespool Qty Is 63
1H***71Seal 20.22 mm(.796 In.)I. D.2
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7w-4952 Compressor Gp-Refrigerant
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)3
2P***32Vee Belt1
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)1
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8y-5959 Extension Gp-Backrest
8Y***77Pan As-Extension1
8Y***47Fastener2
8Y***59Extension Group-Backrest1
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8g-2999 Floorplate Gp
3W***37Support Assem. (L.H.)1
3W***30Support Assem. (R.H.)1
3W***13Floorplate1
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8g-4917 Gauge & Warning Gp
4W***83Gauge Group-Coolant Temperature; (Eng. Coolant)(24 V)1
4W***85Gauge Group-Oil Temperature; (Torque Converter, 24-Volt)1
5D***19Lamp (Miniature)3
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3w-7315 Guard Gp-Vandalism
3B***07Cotter--Yoke Assembly2
3W***15Guard Group-Vandalism; (Fuel Drain Lock)1
3W***16Lock As1
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5g-9980 Guard Gp-Vandalism
3H***66Stud-Weld; (1/4-20x0.625-In)2
5F***98Screw Assem.; (1/4-28)1
5G***55Bracket Assem.1
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3w-1051 Heater Ar-Cab
3W***51Heater Ar-Cab1
6T***88Heater Group-Cab; Cab Heater Group1
8G***10Lines Group-Heater1
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7x-1999 Heater Gp
09***52Film-Control; (Heater)1
13***53Hose; (192.5cm) (X2)0
1V***52Switch Group-Toggle1
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6y-3243 Heater Gp
00***10Elbow1
2V***99Knob-Control; (Tempurature Variable Control)1
3K***20Grommet2
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6t-3388 Heater Gp-Cab
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
0S***14Bolt (.25" Diameter-.50" Long)2
11***08Plate1
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8g-3524 Horn Gp-Electric
2H***22Lockwasher1
3B***01Lockwasher (Part Of 3f***99 Switch)1
3T***57Switch As; (Horn)(Forward Horn)1
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108-4582 Housing Gp-Seat Suspension
09***78Pin-Spring1
10***24Kit-Indicator; (Weight Adjustment)(Suspension Seat)1
10***79Kit-Bumper; (Weight Adjustment)(Suspension Seat)1
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8y-6823 Housing Gp-Seat Suspension
10***24Kit-Indicator; (Weight Adjustment)(Suspension Seat)0
10***79Kit-Bumper; (Weight Adjustment)(Suspension Seat)0
8Y***45Kit-Suspension Knob; (Height Adjustment)(Suspension Seat)0
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3w-1388 Instrument Gp
1V***09Grommet 11.17 mm(.44 In.) Thick)1
2D***35Locknut (Visor To Bracket)4
3D***09Grommet 1.75 In. (44.45 mm) Dia.2
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3w-1386 Instrument Gp
2D***35Locknut (Visor To Bracket)4
3D***09Grommet 1.75 In. (44.45 mm) Dia.1
3L***87Lockwasher 7.24mm(.285in.)O.D.; (3.7x7.24x.48mm Thk)4
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8g-4536 Liner Gp-Cab
6P***63Button (Spring Clip)10
8G***36Liner Group-Cab; Cab Liner Group1
8G***50Liner1
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8e-1305 Lines Gp-Air Conditioner
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
1B***57Clip Tube To Diesel Fuel Pump Housing2
1L***81Spacer .562 In. (14.28 mm) Thick1
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8g-4610 Lines Gp-Heater
2P***77Bracket1
3T***98Grommet; (Large)2
5D***26Clamp-Band; (9/16 To 1 1/16)4
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9p-9392 Mirror Gp-Rear View
5K***79Bolt-Round Head; (3/8-16x11-In)1
5P***75Washer-Hard; (10.2x22.5x3-mm Thk)(Shield To A/C)2
5P***74Mirror; (Rear View)1
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8g-4535 Mounting Gp-Cab
3T***45Mounting8
3T***62Plate4
7X***73Bolt; (3/4-10x5.5-In)4
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9p-6717 Mounting Gp-Rops
7X***06Capscrew; (Hex Head) (1-8x3 G8 Z)16
8G***79Support As1
8G***94Support As1
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8y-5992 Pan Gp-Seat
3K***97Pin 3.18 mm(.125 In.) Diameter4
6V***56Ring-Retaining2
8Y***92Pan As-Seat; (Bottom)1
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6v-6561 Wiper Pivot Gp
6A***18Washer; (8.1x12.5x1-mm Thk)1
6V***07Shaft As; (Pivot)1
6V***09Cap-Wiper1
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8g-4539 Pressurizer Gp-Cab
1T***99Pin-Spring1
2D***95Knob1
3E***04Filter Element-Cab Air; (Cab Air)2
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8g-4615 Protection Ar-Vandalism
3W***15Guard Group-Vandalism; (Fuel Drain Lock)1
5G***12Cap Group-Protection; Fuel Filler Protection Cap Group1
5G***80Guard Group-Vandalism; Vandalism Guard Group -- Dash1
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7c-0802 Protection Gp-Vandalism
5P***00Key Total 2 Pieces Per Unit; (Literature Compartment)2
5P***02Padlock Group; (Includes: Battery Compartments, Platform Compartments, Radiator Access Door, Firewall Doors)1
6V***74Cover-Padlock (Not Part Of This Group)1
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8g-7209 Protection Gp-Vandalism
5P***00Key Total 2 Pieces Per Unit; (Literature Compartment)2
5P***02Padlock Group; (Includes: Battery Compartments, Platform Compartments, Radiator Access Door, Firewall Doors)1
6V***74Cover-Padlock (Not Part Of This Group)1
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8y-1305 Rops Gp
1P***72Spacer; (1.031x1.219x0.75-In Thk)8
2H***91Nut4
3H***76Boss2
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8g-4381 Rops Gp
4B***58Screw (Identification Plate) Mounting4
8G***81Rops Group1
8G***64Rollover As1
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9n-4840 Screen Gp-Protection
3P***34Spacer; (16.75x33.3x25.4-mm Thk)4
5P***75Washer-Hard; (10.2x22.5x3-mm Thk)(Shield To A/C)4
7X***44Bolt-Plt; (5/8unc X 1 3/8)23
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8y-3792 Seat Belt Gp
8S***34Locknut; (Flange) (7/16-20 Thd)1
8T***60Washer-Hard (For Use With 7/16 In Bolts)1
8Y***92Seat Belt Group; -Retractable-Operator1
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8y-6179 Seat Gp-Suspension
4F***79Bolt Clip To Tube Assembly (Aftercooler Radiator Inlet)1
8Y***92Seat Belt Group; -Retractable-Operator1
8Y***88Suspension Group-Seat1
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9p-8935 Seat Gp-Suspension
03***35Bolt-Self Locking; 2.22cm(.875 In.) Lg4
1H***96Screw-Machine; (3/8-16x0.52-In)3
5M***62Bolt; (3/8-16x0.75-In)5
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6y-5423 Seat Gp-Suspension
03***35Bolt-Self Locking; 2.22cm(.875 In.) Lg4
03***23Screw6
5M***62Bolt; (3/8-16x0.75-In)4
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6w-9744 Seat Gp-Suspension -Vinyl
03***71Capscrew, Csk. Hd., 3/8in.-16 N.C. X 1in.2
10***65Pin1
2K***73Locknut Inside Guard Assembly6
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3w-0850 Step Gp
3W***50Step Group1
3W***09Step As1
3W***14Step As1
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8e-7149 Step Gp
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case4
5P***75Washer-Hard; (10.2x22.5x3-mm Thk)(Shield To A/C)4
8E***47Step As; (Rh)1
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3w-0851 Step Gp
3W***51Step Group; Step Group1
3W***22Step Assem.; (R.H.)1
3W***26Step Assem.; (L.H.)1
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6y-4950 Step Gp
5P***75Washer-Hard; (10.2x22.5x3-mm Thk)(Shield To A/C)4
6Y***50Step Group1
6Y***56Step As1
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9n-4821 Step Gp
2K***73Locknut Inside Guard Assembly8
6Y***47Step As2
6Y***54Clamp As4
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108-4082 Suspension Gp-Seat
10***03Fastener23
10***94Kit-Tether Belt; (Suspension Seat)(Seat Suspension)1
10***95Kit-Suspension Roller; (Suspension Seat)(Seat Suspension)1
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6w-8502 Suspension Gp-Seat
02***24Locknut; (1/4-20-Thd)2
16***61Arm As1
1B***93Bolt; (1/4-20x0.62-In)2
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8y-5888 Suspension Gp-Seat
10***94Kit-Tether Belt; (Suspension Seat)(Seat Suspension)1
10***95Kit-Suspension Roller; (Suspension Seat)(Seat Suspension)1
10***96Kit-Suspension Shaft; ((Includes Bearings)1
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3w-6876 Washer Gp-Window
3W***98Cap; (Window Washer Tank Fill)1
3W***99Packing1
3W***76Washer Group1
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8g-4537 Washer Gp-Window
2S***47Grommet 12.7 mm(.50 In.) Thick)1
2Y***29Grommet2
3H***48Boss1
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3w-4229 Window As-Lh
3W***29Window As-Lh1
3W***32Window As-Sliding-Lh; Window As.-Sliding(Alna Koki Co. Ltd.)1
8E***35Window Group-Cab; -Sliding, Lh1
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3w-4230 Window Gp
3W***30Window As-Rear1
3W***33Window As-Sliding-Rear; Window As.-Sliding(Alna Koki Co. Ltd.)1
8E***33Window Group-Cab; -Rear1
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3w-4228 Window As-Rh
3W***28Window As-Rh1
3W***31Window As-Sliding-Rh; Window As.-Sliding(Alna Koki Co. Ltd.)1
8E***34Window Group-Cab; -Sliding, Rh1
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3w-4232 Window As-Sliding-Lh
3W***32Window As-Sliding-Lh; Window As.-Sliding(Alna Koki Co. Ltd.)1
3W***35Glass; (Tinted)1
3W***36Glass; (Tinted-Light Green)1
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9g-4598 Window As-Sliding-Lh
2H***22Screw-Self-Tapping; (10-16x0.77-In)2
3T***21Lock Assem.1
3W***39Glass; (Tinted)1
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3w-4233 Window As-Sliding
3W***33Window As-Sliding-Rear; Window As.-Sliding(Alna Koki Co. Ltd.)1
3W***37Glass1
3W***38Glass; (Tinted)1
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9g-4596 Window As-Sliding
2H***22Screw-Self-Tapping; (10-16x0.77-In)2
3T***21Lock Assem.1
3W***41Glass; (Tinted)1
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9g-4597 Window As-Sliding-Rh
2H***22Screw-Self-Tapping; (10-16x0.77-In)2
3T***21Lock Assem.1
3W***39Glass; (Tinted)1
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3w-4231 Window As-Sliding-Rh
3W***31Window As-Sliding-Rh; Window As.-Sliding(Alna Koki Co. Ltd.)1
3W***35Glass; (Tinted)1
3W***36Glass; (Tinted-Light Green)1
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8y-6442 Window Gp-Cab
08***11Screw-Pan Head; (M5x0.8x16-mm)(M5x0.8x16mm)2
6V***12Screw-Machine; (M6x1x25-mm)2
8T***77Screw-Machine; (M5x0.8x12mm)2
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8y-6437 Window Gp-Cab
08***11Screw-Pan Head; (M5x0.8x16-mm)(M5x0.8x16mm)2
6V***12Screw-Machine; (M6x1x25-mm)2
8T***77Screw-Machine; (M5x0.8x12mm)2
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8y-6450 Window Gp-Cab
08***11Screw-Pan Head; (M5x0.8x16-mm)(M5x0.8x16mm)2
6V***12Screw-Machine; (M6x1x25-mm)2
8T***77Screw-Machine; (M5x0.8x12mm)2
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8e-4934 Window Gp-Cab -Rh
8E***34Window Group-Cab; -Sliding, Rh1
8Y***21Seal-Window1
8Y***23Seal0
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8e-4933 Window Gp-Cab -Rear
8C***82Bolt-Socket Head; (M4x0.7x20mm)(M4x.7x20mm)1
8E***33Window Group-Cab; -Rear1
8Y***21Seal-Window1
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8e-4935 Window Gp-Cab -Lh
8E***35Window Group-Cab; -Sliding, Lh1
8Y***21Seal-Window1
8Y***23Seal0
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7x-1982 Wiper Gp-Window
3C***84Screw-Machine; (M5x0.8 Bg Thd)4
3T***59Bracket1
3T***86Crank Assem.1
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3t-7071 Wiper Gp-Window
3C***84Screw-Machine; (M5x0.8 Bg Thd)4
3T***59Bracket1
3T***71Wiper Group; -Door, Rh1
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9x-3337 Wiper Gp-Window
3C***84Screw-Machine; (M5x0.8 Bg Thd)4
3T***59Bracket1
3T***86Crank Assem.1
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3t-7072 Wiper Gp-Window
3C***84Screw-Machine; (M5x0.8 Bg Thd)4
3T***59Bracket1
3T***72Wiper Group; -Door, Lh1
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7x-1983 Wiper Gp-Window
3C***84Screw-Machine; (M5x0.8 Bg Thd)4
5C***53Bolt (M6x1.00x16mm); (M6x1x16mm Thk)3
5P***37Washer 5t***54 Plate To 7t***28 Cable As3
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8g-4538 Wiper Gp-Window
1H***03Screw As-Machine4
2S***47Grommet 12.7 mm(.50 In.) Thick)2
3T***45Clip As (Sure Seal Connector)5
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3t-7064 Wiper Gp
3T***64Wiper Group-Sensor1
7X***82Wiper Group; Wiper Group (Robert Bosch)1
7X***83Wiper Group; Wiper Group (Nippondenso)1
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Power Train
8g-4390 Control Gp-Transmission
00***88Yoke-Rod Offset1
03***35Bolt-Self Locking; 2.22cm(.875 In.) Lg2
1B***01Key-Woodruff1
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8p-8984 Control Gp-Transmission Hyd
03***33Washer; (0.516x1x0.12-In Thk)2
2K***11Pin (Spring-Outer)1
2M***72Bearing As-Needle; (Large)4
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3w-1233 Fastener Gp-Final Drive
2M***40Seal-O-Ring; (380.36mm Id)1
3W***33Fastener Group-Final Drive1
5P***06Seal-O-Ring (430.66mm Id)1
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3w-5229 Filler Gp-Power Train Oil
2W***25Cap As-Oil Filler; (Engine)1
3W***29Filler Group-Power Train Oil1
3W***30Gauge-Oil Level (Dipstick); (Final Drive)1
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8g-4388 Filter Gp-Transmission
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold2
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard6
13***33Filter Element-Transmission1
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8g-3974 Final Drive Gp
0S***87Bolt-Bracket Assembly To Timing Gear9
10***04Hub-Ring Gear1
1H***93Cone-Roller Bearing6
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3t-8317 Gear Gp-Bevel & Transfer
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case1
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine18
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9x-6547 Kit-Bearing
1T***43Ball Bearing1
2J***62Race And Roller As; (Outer)1
4S***38Bearing-Special Ball1
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9x-6541 Kit-Bearing
10***97Ball Bearing1
1T***43Ball Bearing1
1T***34Ring-Metal Seal1
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8y-1519 Lines Gp-Power Train Cooler
2M***80Seal--To Connector Pump Outlet1
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)3
3W***44Tube As1
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8g-2448 Lines Gp-Power Train Oil
03***83Nipple-Front Axle Suction Port1
03***79Elbow1
14***92Hose As1
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3t-9633 Mounting Gp-Transmission
3T***15Gasket (Small)1
3T***15Spacer; (13.5x19.05x29-mm Thk)2
3T***16Bracket1
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3t-8316 Planetary Gp-Transmission
00***16Ring3
06***11Ring-Retaining1
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold6
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3t-7897 Pump Gp-Gear
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
0T***55Bolt; (3/8-16x4.25-In)(Location S)4
1B***36Key-Woodruff1
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3t-7898 Pump Gp-Gear
0S***87Bolt-Bracket Assembly To Timing Gear2
1H***27Seal 10.1 cm(3.984 In.) I.D.1
3T***97Pump Group-Gear1
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7g-0841 Segment Gp-Sprocket -2 Required
3S***82Bolt; (5/8-18x1.84-In)20
6V***16Washer-Hard; (18.25x35x3.5-mm Thk)20
6Y***45Segment-Sprocket5
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7g-4032 Shaft Gp-Main Drive
0L***78Bolt 44.45 mm(1.75 In.) Long8
3T***88Yoke As1
3V***31Washer; (10.2x16x2-mm Thk)(16mm Od)8
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1t-1440 Torque Converter Gp
0S***84Bolt, Hex. Hd., 1/2"-20 N.C. X 1 3/4"1
0T***02Bolt; (3/8-16x0.625-In)(Shield To Head)6
1A***43Bolt (.75" Long); (5/16-24x0.75-In)8
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7g-0586 Torque Converter Gp
0S***84Cap Screw (2 1/4" Long)1
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine2
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***828
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3t-8315 Transmission Ar-Power Shift
3T***15Transmission Ar-Power Shift1
3T***16Planetary Group1
3T***17Gear Group-Bevel & Transfer1
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7g-5889 Universal Joint Gp
0L***78Bolt 44.45 mm(1.75 In.) Long8
3V***31Washer; (10.2x16x2-mm Thk)(16mm Od)8
5T***62Spider & Bearing As2
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8p-8985 Valve Gp
4B***03Bolt (4 In. Long)--101.6 mm)26
5M***14Pipe Plug Cylinder Block Oil Pressure4
6T***10Manifold-Bottom1
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8p-8986 Valve Gp
1J***53Pin-Spring2
1P***16Seal-O-Ring; (11.63mm Id)4
2A***46Plug 9.80mm(.386in.)Outside Dia.2
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2p-3675 Valve Gp-Relief
06***40Seal-O-Ring (Id=37.69mm)1
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly4
14***46Plug-Pipe1
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Service Equipment And Supplies
6v-1971 Literature Gp
5P***58Sleeve; (Cable Splice)1
5P***00Key Total 2 Pieces Per Unit; (Literature Compartment)2
5P***02Padlock Group; (Includes: Battery Compartments, Platform Compartments, Radiator Access Door, Firewall Doors)1
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6v-0532 Plate & Film Gp
2Y***84Plate-Serial Number; (Lh Side-Forward Edge)1
4B***58Screw (Identification Plate) Mounting4
6V***32Plate & Film Group1
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9x-2598 Plate & Film Gp
3N***90Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine1
5P***97Plate-Warning (Universal); In Operators Compartment On Left Front Panel Near Top1
5P***75Film--Transmission And Parking Brake Lock; On Vertical Surface Of Guard Assembly Adjacent To Level1
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Steering And Braking System
9n-4823 Clutch & Brake Gp-Steering
05***94Bolt-12 Point Head; (3/8-16x1.75-In)6
1S***68Ring-Retaining1
2B***58Plug--To Block Upper Front Air Manifold2
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3w-2907 Control Gp-Service Brake
1A***52Clevis,Rod End Governor And Decelerator Control2
1B***06Key-Woodruff2
1J***84Pin,Straight,Headed2
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8g-4330 Control Gp-Steer Clutch & Brk
03***73Bolt; (3/8-16x1.5-In)2
09***78Bearing-Roller2
11***60Rod1
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8g-1929 Shaft Gp-Steering Clutch Input
8G***29Shaft Group-Steering Clutch Input; Steering Clutch Input Shaft Group1
8G***47Shaft-Governor Control1
8G***48Shaft-Governor Control1
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3t-6498 Valve Gp-Control
0S***18Bolt; (5/16-18x1-In)(Hydraulic Pump)2
1J***97Valve; (Push-Pull)1
1S***38Ring-Retaining2
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Undercarriage
9n-4682 Cap Gp-Track Idler
1A***51Bolt,Machine Hydraulic Tank Mtg2
5P***47Washer (Bracket To Valve Support)2
6B***63Pin-Spring (.25in Od)1
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7g-4831 Cap Gp-Track Roller
1B***67Bolt, Hex. Hd., 5/8"-11 N.C. X 3"2
5P***47Washer (Bracket To Valve Support)2
7G***29Cap-Track Roller1
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8e-2490 Equalizer Bar Gp
1K***85Ring Part Of Kit P/N 1w***464
3B***85Fitting-Hydraulic; Fitting 45 Degrees Angle--Used As Required2
3J***52Adaptor (7/16 In). From Serial No 8sd 00330 - Up.2
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9n-4820 Frame Gp-Track Roller
1F***48Nut 12.70 mm(.50 In.) Thread2
1H***28Seal (3.73 In. Inside Diameter)2
1P***13Boss; (5/8-11x1.0in Oal)1
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6t-6986 Guide Gp-Roller
2P***58Sleeve4
2P***59Shaft Assem.2
2P***84Bar Assem.1
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7t-4400 Idler Gp-Track
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
13***18Washer-Thrust2
2H***45Retainer,Packing Body Part Of Kit P/N 4j***802
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6y-5410 Link As-Track
6Y***73Plug; (Clear)1
6Y***99Stopper As44
6Y***10Link Assembly-Track; Link As-Track1
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9n-4836 Pivot Bar Gp
1A***35Bolt 2.00 In. (5.08 cm) Long6
1D***28Bolt 8.26 cm(3.25 In.) Long22
8E***37Shaft As2
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124-8240 Roller Gp-Track-Double Flange
12***40Roller Group-Track-Double Flange1
12***41Rim As-Double Flange1
12***48Bushing Assem.2
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5g-8846 Scraper Gp-Idler
5G***16Scraper8
5G***17Scraper4
5G***46Scraper Group-Idler1
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8g-3163 Track Adjuster & Recoil Gp
16***27Spring2
2J***74Seal-O-Ring; 9.12mm(.36in) Id2
2S***78Seal-O-Ring (Id=37.47mm)2
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6y-9484 Track Gp
1M***08Nut-Track344
3T***01Bolt-Track Master; (5/8-18x2.63-In)4
5H***79Plug Compression Release Shaft Hole88
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8e-4289 Track Gp
1M***08Nut-Track172
3T***01Bolt-Track Master; (5/8-18x2.63-In)2
6Y***10Link Assembly-Track; Link As-Track1
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8e-4290 Track Gp
1M***08Nut-Track172
3T***56Shoe-Track44
3T***01Bolt-Track Master; (5/8-18x2.63-In)2
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8e-8529 Track Gp -Lh
1M***08Nut-Track258
3T***01Bolt-Track Master; (5/8-18x2.63-In)3
5H***79Plug Compression Release Shaft Hole44
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8e-8528 Track Gp -Rh
1M***08Nut-Track258
3T***01Bolt-Track Master; (5/8-18x2.63-In)3
5H***79Plug Compression Release Shaft Hole44
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8e-4291 Track Gp
1M***08Nut-Track172
3T***58Shoe As-Track44
3T***01Bolt-Track Master; (5/8-18x2.63-In)2
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7g-4837 Roller Gp-Track-Double Flange
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
1H***27Seal 10.1 cm(3.984 In.) I.D.2
3T***06Shaft-Track Roller1
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7g-4836 Roller Gp-Track-Single Flange
09***78Pin-Spring4
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
1H***27Seal 10.1 cm(3.984 In.) I.D.2
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D4HTSK II serial number reference

The PIN/serial plate on a D4HTSK II is a riveted metal tag on the left side of the main frame, near the front or under the operator's seat/step area, matching placement used on other H-series Cat track-type machines of this era. The serial number is an 8-character code: the first 3 characters are the prefix identifying model and build series (8ZF for this skidder), followed by a 5-digit sequence number for that unit, so 8ZF00001 is the first unit built in that run. Match the full 3-character prefix, not a partial match, since Cat reuses individual letters and digits across unrelated model lines.

PrefixIdentifies
8ZFD4HTSK II track-type skidder (D4H Track-Type Skidder Series II)

Frequently asked questions

What engine does the Caterpillar D4HTSK II use?

The Caterpillar 3204, a mechanically governed 4-cylinder turbocharged diesel of 5.2 L displacement, rated around 71 kW (95 hp) gross. There is no electronic control module; injection timing and governing are fully mechanical, matching the earlier D4H TSK. The later D4HTSK III replaced this engine with the larger Cat 3304.

What is the operating weight of the Caterpillar D4HTSK II?

Operating weight runs about 12,380-12,909 kg (27,293-28,460 lb). The exact figure varies by undercarriage configuration (tri-track, heavy-duty tri-track, quad-track, heavy-duty quad-track, or single-track) and by whether a winch or a hydraulic grapple is mounted at the rear.

What replaced the Caterpillar D4HTSK II?

The Caterpillar D4HTSK III replaced it, carrying the same high-drive skidder chassis concept forward but switching to the larger Cat 3304 engine. That is a different engine generation from the 3204 used in the D4HTSK II, not a running change within the same powertrain.

What D4HTSK II owners discuss

Why does the transmission run hot on the D4H TSK II when skidding?
Operators running these in continuous skidding cycles report powershift/torque-converter oil settling around 99-110°C (210-230°F) regardless of whether the turn is being pulled uphill or downhill. The high-drive chassis packs the cooling package tightly against a modest radiator/oil-cooler stack, so airflow and cooler capacity become the limiting factor once the machine works a full shift under sustained load. Fresh oil and a clean cooler core help, but a machine that still climbs into the high end of that range after routine service usually has an internal leak or a relief circuit that gets worse as the oil thins with heat. Have your dealer verify transmission pressures at full operating temperature before assuming a cooling fix alone will solve it.
What undercarriage wear pattern is typical for this machine?
Being a high-drive, elevated-sprocket chassis running tri- or quad-track shoes rather than a wide low-ground-pressure pad, chain and bushing wear runs faster than on a comparable dozer once the machine spends its life on soft, wet skid trails. Front idler wear accelerates noticeably if the idler yoke hardware backs off and lets the idler run out of alignment, showing up as uneven flange wear rather than even wear across the pad. The rear idler on this layout also sees more reversed loading than a conventional dozer because of how the chain wraps back toward the elevated drive, so it is common to see rear-end wear outpace the front on a machine that has worked hard in mud.
What engine quirks come with the 3204 in the D4H TSK II?
The turbocharged 3204 in this machine gets worked harder than the naturally aspirated version used in other applications, so top-end life on rings and valve guides tends to run shorter under sustained skidding load. Factory pistons carry a lighter ring pack than the heavier-duty ring sets sold as a rebuild upgrade, which is enough to pass a compression test when new but leaves the engine prone to blow-by and rising oil consumption as hours accumulate. The mechanical fuel system has a reputation for being fussy, with injectors and the injection pump sensitive to fuel quality and needing frequent attention. Front gear-train wear over time can also shift injection timing off spec, so a static timing check at top dead center is worth doing on a high-hour engine.
What hydraulic problems show up as pump vibration or lost pressure?
A vibration that develops in the hydraulic pump has been traced to a broken piston inside the pump on more than one of these machines, so it is worth pulling the pump for inspection rather than chasing the noise as a mount or coupling issue. Separately, worn seals in the blade and tilt valve section are a known source of slow pressure bleed-down, showing up as a blade or tilt function that will not hold position under load. Neither fault is unique to the skidder configuration; both are consistent with a machine that has logged a lot of hours pushing and lifting. Have your dealer verify pump and relief pressures at the test ports before condemning a cylinder or valve section.
Are there known electrical or gauge/sensor issues?
The hydraulic oil temperature warning light and its sender are a recurring nuisance-fault point on these machines; a light that stays on or trips falsely is usually the sender rather than an actual overtemperature condition, so confirm actual oil temperature before chasing a hydraulic fault. Gauge circuits on this era of machine use simple resistance-based senders, so a gauge that pegs one direction and will not move typically points to an open or shorted sender or a bad ground rather than a harness fault. Given the age of these machines, expect to spend as much time chasing corroded grounds and connector pins as replacing actual components.
What do owners say about the winch and how the machine handles logs?
The general view is that the winch on the D4H TSK II is on the light side for the machine's size. It pulls fine on normal turns, but leaning on it hard against a heavy turn is a good way to break the winch rather than the cable. Several operators note the arch does not lift the log far off the ground compared with a purpose-built rubber-tired skidder, limiting ground clearance under the load, and some run the machine sparingly in skidding service for that reason. It is regarded as easy to operate with good visibility, closer to a lighter-duty tracked skidder than a dedicated production grapple machine. Have your dealer or a rigging-qualified tech verify winch brake holding and cable condition before loading it to capacity.
What should you check before buying a used D4H TSK II?
Start with the undercarriage: remaining life on the chain, sprockets, and pads matters more here than on a comparable dozer, since tracked skidders spend their life in soft, wet ground that eats chain fast. Confirm the engine's rebuild history and watch for oil consumption, smoke under load, or hard starting that points to worn rings or a tired fuel system on the 3204. Cycle the transmission through every range and hold it under load to feel for delayed or slipping engagement, watching how far the temperature gauge climbs during that test. Check the winch for a documented rebuild and inspect the cable for kinks or broken strands, then cycle the blade and arch/grapple hydraulics to feel for pressure fade under sustained load. Because this model was superseded by purpose-built logging skidders, factory parts support has thinned, so confirm parts availability for the specific engine and hydraulic components before committing. Have your dealer verify hydraulic and transmission pressures and inspect the winch brake before finalizing the purchase.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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