Caterpillar PR-450C
Caterpillarcold planer(no series)

Caterpillar PR-450C

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar PR-450C is a track-mounted, self-propelled cold planer (asphalt milling machine) built for full-depth removal and profiling of asphalt and composite pavement. It runs a Caterpillar 3408C diesel, a mechanically governed V8 in the same displacement class as the base 3408 fitted to the original PR-450 and the 3408B used partway through that production run; gross output on the base PR-450 platform is documented at roughly 336 kW (450 hp), consistent with the "450" horsepower-class naming Caterpillar used across its early PR-series planers. Operating weight runs in the neighborhood of 25.7-26.5 t (56,700-58,500 lb) depending on configuration and installed options. The PR-450C rode on a three-track undercarriage, cut a path around 1.92 m (6.3 ft) wide to a maximum depth near 254 mm (10 in), and belongs to Caterpillar's first cold-planer lineup alongside the PR-75, PR-105, PR-275, and PR-750B, sitting below the larger PR-1000/PR-1000C in the same family tree. It was introduced in the 1980s as the base PR-450 and carried through the PR-450B into the PR-450C by the early-to-mid 1990s.

The letter suffix on this machine tracks its engine, not a structural redesign: the base PR-450 shipped with the 3408, mid-production machines moved to the 3408B, and the PR-450C closed out the line on the 3408C, each step bringing incremental fuel-system and durability refinements while staying fully mechanical with no electronic engine controls. Caterpillar later regrouped its cold planer range under the PM naming scheme, so the PR-450C has no documented one-for-one successor; it represents the end point of the original PR-series rather than a model that was directly replaced. In the used and parts market today, that mechanical simplicity is the draw: no ECM, no emissions aftertreatment, and a drivetrain that a shop can rebuild without OEM diagnostic tools. Surviving units are valued as rebuild candidates and parts sources for cutting drum, undercarriage, and rotor-drive components shared loosely across the 3408-family Cat planer line.

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 PR-450C specifications

Engine

Engine modelCat 3408 mechanical diesel; later production carries the 3408C designation. Machines built from serial prefix 7PJ are documented as 3408-powered.
Gross power336 kW (450 hp)
Net powerNot published in available spec sheets — verify with dealer for a specific serial range
Displacement18.0 L (1,098.5 cu in)
Cylinders8, V-configuration
Emissions tierMechanical, non-electronic diesel; predates U.S. EPA nonroad tier certification — no tier rating applies

Weights

Operating weight, full load25,760 kg (56,791 lb) — figure reported for the PR-450 line generally; confirm against the specific machine's build sheet, as C-series-only weight is not separately published
Shipping weightNot separately documented — treat as close to operating weight less consumables
Ground pressureNot published

Dimensions

Transport/operating length13.29 m (43.6 ft)
Shipping width2.87–2.90 m (9.4–9.5 ft), varies by configuration/series
Shipping height4.27 m (14.0 ft)
Milling width1.92 m (6.3 ft)
Maximum milling depth254 mm (10 in)
Discharge conveyor width762 mm (30 in)
Track pad width (front and rear)307 mm (12.1 in)
Ground clearanceNot published

Performance

Milling/operating speedUp to 53.6 m/min (175.9 ft/min)
Travel speed3.2 km/h (2 mph)
GradeabilityNot published

Service capacities (summary)

Fuel tank757 L (200 gal)
Water spray system2,650 L (700 gal)
Hydraulic systemNot documented in available spec sheets
Engine oilNot documented in available spec sheets
Cooling systemNot documented in available spec sheets

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

PR-450C fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter) - Cat 3408 DITA V8Not documented in public sources for this exact machine; the 3408 family runs roughly 38-61 L (10-16 US gal) depending on pan/application - verify against the PR-450C OMM lubricant chart or dealerCat DEO (Diesel Engine Oil), multigrade per ambient temperature; Cat DEO-ULS on later emissions-compliant builds
Cooling systemNot documented in public sources for this exact machine - verify against the PR-450C OMM lubricant/coolant chartCat ELC (Extended Life Coolant) or Cat DEAC (Diesel Engine Antifreeze/Coolant), pre-mixed to local climate; Cat ELC Extender at scheduled intervals if ELC used
Fuel tankabout 757 L (200 US gal)Diesel fuel, No. 2-D or equivalent per ambient temperature (low-sulfur/ULSD on later emissions-tier builds)
Water spray/dust suppression systemabout 2,650 L (700 US gal)Clean water; anti-freeze additive per Cat guidance in cold climates to prevent line/tank freezing
Hydraulic system (tank and system)Not documented in public sources for this exact machine - varies by configuration; verify against the PR-450C OMM lubricant chartCat HYDO Advanced or Cat TDTO (machines that share hydraulic and drivetrain oil), viscosity grade selected by ambient temperature per the OMM cold/hot-climate chart
Final drives / track drive compartments (each)Not documented in public sources for this exact machine - verify against the PR-450C OMM lubricant chartCat TDTO (Transmission and Drive Train Oil), viscosity grade per ambient temperature
Grease points (chassis, cutter drum bearings, conveyor pivots)Spec only, no fill volume listedCat Advanced 3Moly grease (or Cat Multipurpose/Utility grease as an alternate), NLGI grade selected per ambient temperature

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

Caterpillar PR-450C maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil, coolant, and fuel levels before start-up and drain water/sediment from the fuel water separator
  • Walk the cutting drum and inspect tool holders and bits for chipping, flats, or missing tools before milling
  • Clean packed millings and debris from the track roller frames, idlers, and undercarriage pivot points
  • Check water spray nozzles in the cutting chamber and clear any clogged or misaligned nozzles
  • Check conveyor belt tracking, tension, and scraper contact on primary and discharge conveyors
  • Grease all chassis, track frame, and cutting-chamber pivot points per the lubrication chart
Every 250 h
  • Change engine oil and replace the engine oil filter
  • Replace primary and secondary fuel filters and inspect fuel lines for chafing or leaks
  • Inspect and adjust rotor drive and conveyor drive belt or chain tension
  • Check hydraulic oil level and inspect hoses and fittings for wear, chafing, or seepage
  • Inspect cutting drum bearing seals for grease purge and check for lubricant leakage
  • Check track roller frame and undercarriage mounting bolts for correct torque
Every 500 h
  • Pull engine oil and coolant samples for fluid analysis
  • Replace hydraulic system return and case-drain filters
  • Inspect track chain tension and pad wear, adjust as needed
  • Inspect rotor drive belts, chains, and sprockets for stretch or tooth wear
  • Clean the radiator and hydraulic oil cooler cores of packed milling dust
  • Check alternator output, battery condition, and clean battery terminals
Every 1,000 h
  • Replace primary and secondary engine air filter elements
  • Change hydraulic system oil or extend the interval based on sample results
  • Inspect the turbocharger, boost lines, and wastegate linkage for play or leakage
  • Check and adjust engine valve lash to factory clearance
  • Inspect the rotor gearbox oil level and condition, top off or change as required
  • Inspect and repack track idler and roller bearings on the undercarriage frames
Every 2,000 h
  • Change engine coolant or extend per extended-life coolant sample results
  • Inspect fuel injection lines and injectors, replace as condition warrants
  • Sample or change track drive motor and final drive gear oil
  • Inspect rotor gearbox seals and bearings for wear, rebuild if leaking or noisy
  • Perform a full hydraulic system inspection covering pumps, motors, and cylinder rod seals
  • Inspect the main frame and undercarriage structure for cracking at lift points and oscillation pivots
Every 4,000 h
  • Tear down the rotor gearbox for bearing, seal, and gear inspection or replacement
  • Overhaul or inspect the track drive motors and final drives to factory tolerances
  • Replace cutting chamber side plate and housing wear liners
  • Inspect the engine top end, including cylinder liners, injectors, and turbocharger, for overhaul
  • Conduct a full structural inspection of the main frame, moldboard, and track oscillation mounts

Servicing the PR-450C beyond the schedule

Predictive Maintenance & Fluid Analysis

Pull engine oil, coolant, and hydraulic oil samples on a fixed schedule to track wear metals from the 3408C's cylinder liners, bearings, and rotor gearbox before they show up as failures. Watch for silica in oil samples, a sign that milling dust is bypassing seals on the cutting drum bearings or track drive motors. Trend hydraulic sample results to catch pump or motor wear early, since this machine's rotor drive and propel systems both run off the same hydraulic circuit.

Corrective & Common Repairs

Expect frequent cutting-tool and tool-holder replacement given the abrasive duty cycle; worn holders lead to uneven cut depth and drum vibration. Water spray nozzles clog with milling fines and need regular clearing to keep dust and bit temperatures controlled. Conveyor belt mistracking and scraper wear are recurring complaints on high-hour machines. On the 3408C, injector and turbocharger boost issues are the most common driveline repairs reported on this engine family.

Overhaul & Rebuild Points

The rotor gearbox and cutting drum bearings take the heaviest abuse and are the first major rebuild point on high-hour PR-450C units, along with track drive motor and final drive wear. The mechanical 3408C is well suited to an in-frame overhaul: liners, pistons, injectors, and turbocharger can be rebuilt without touching electronics. Undercarriage frames should be checked for cracking at track oscillation pivots and lift points before a full rebuild is scheduled.

Seasonal & Environment Servicing

In cold weather, run the correct fuel blend and check block heater and battery condition before start-up, since a mechanical V8 diesel this size is hard to crank cold without full charging capacity. In hot, dusty milling environments, clean the radiator and hydraulic oil cooler cores of packed dust frequently to prevent overheating. Flush and inspect the water spray system before each season change to prevent nozzle scaling or freeze damage in the cutting chamber lines.

PR-450C common service parts

Part numberPart
1R-0749Filter-FuelCheck fitment →
1D-4540Bolt,Machine Fuel Filter MountingCheck fitment →
077-3250Kit-FilterCheck fitment →

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PR-450C fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
Engine Oil Pressure - Low (shutdown lamp/alarm)Mechanical/electrical shutoff module senses oil pressure below the safe threshold and trips the warning lamp and buzzer, and can shut the engine down.Low oil level, worn oil pump, plugged oil filter, or a faulty pressure sender/wiring.Stop and idle down immediately, check oil level and the mechanical pressure gauge, inspect the sender and wiring before restarting.
Engine Coolant Temperature - High (shutdown lamp/alarm)Shutoff/alarm module detects coolant temperature above the safe limit and lights the warning lamp, sounds the alarm, and may derate or shut the engine down.Low coolant, a radiator or screen packed with milling dust, a slipping or broken fan belt, or a stuck thermostat.Idle down and stop, check coolant level, clear dust from the radiator core and screen, inspect belts and fan drive.
Charging System Fault (alternator warning lamp)Warning lamp indicates alternator output has dropped below the charging threshold and the battery is not being charged.Worn or slipping belt, failed alternator, bad regulator, or loose/corroded battery and charging wiring.Check belt tension and condition, inspect wiring and connections, test alternator output with a meter.
Low Coolant Level WarningCoolant level sender in the recovery tank or sight glass drops below the minimum mark and trips the lamp.External coolant leak, damaged hose or clamp, or a leaking radiator - common where milling debris abrades hoses.Inspect for visible leaks, top off with the correct coolant, check hoses, clamps, and the radiator cap.
Air Filter Restriction IndicatorService indicator shows the air filter differential pressure has reached its service limit.Primary or secondary air filter element clogged with milling dust, typical of heavy cold-planer duty cycles.Inspect and clean or replace the affected filter element, then reset the restriction indicator.
Hydraulic Oil Temperature - High WarningHydraulic tank temperature sensor trips the high-temperature lamp/alarm on the propel and conveyor drive circuit.Low hydraulic fluid level, a cooler core packed with dust, a failed cooling fan, or the system working under sustained heavy load.Check fluid level, clean the hydraulic cooler core, verify the cooling fan turns and pulls air, let the system cool before resuming work.

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

PR-450C attachments & work tools

Cutting rotor/drum

The PR-450C carries a single fixed-width milling rotor sized for the 1.9 m (6 ft 3 in) cutting-width class, built into the cutting chamber rather than offered as a swappable work tool. Alternate tooth-spacing (fine vs. standard pattern) drum kits are common across this era of Cat cold planer but are not confirmed as a factory-order option for this specific unit — verify with a dealer for the exact serial range.

Cutting tools and holders

Rotor tools are carbide-tipped conical bits seated in replaceable, quick-change tool holders, the standard wear-item system used across Cat's legacy cold-planer line of this size class. Holders and bits are consumable wear parts, not machine attachments, and are replaced individually as they dull or break.

Discharge conveyor

A single side-discharge conveyor, roughly 76 cm (30 in) wide, is fixed to the chassis for loading milled material into trucks running alongside the machine. It is a built-in system, not a mounted or coupler-based attachment.

Track undercarriage

The machine runs on a three-track crawler arrangement with rubber pads around 30 cm (12 in) wide, giving independent steering and grade-following at each corner. No wheeled or alternate undercarriage configuration is documented for this legacy self-propelled family.

Water spray / dust suppression

An onboard water tank feeds spray nozzles at the cutting drum and conveyor to cool the bits and control dust during milling. This is an integral system on the base machine rather than an add-on kit for this model.

Cutting-chamber guarding and depth reference

Side skid plates (moldboard-style) close the cutting chamber, define the cut edge, and ride the milled surface as a depth reference while milling. This chamber-guarding arrangement is standard equipment for self-propelled cold planers in this size class.

Grade and slope reference

Later-generation Cat cold planers use averaging-ski or sonic/mechanical grade sensors feeding an automatic grade-control system, but this is not confirmed as factory-fitted on the PR-450C itself. Treat any grade-control kit for this unit as unverified for this exact configuration — check with a dealer before ordering.

Family/parts commonality

The PR-450C shares electrical and drivetrain wear components with sibling large-format Cat cold-planer-family machines of its generation (including the PR-1000/PR-1000C profilers), reflecting a common chassis and control platform rather than any interchangeable work-tool system.

All PR-450C assemblies by section

Every catalogued assembly group for the Caterpillar PR-450C. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
4n-5833 Aftercooler Gp-Water
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting16
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)2
0S***17Bolt --Use Open Hole In Compressor Body1
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081-8036 Air Cleaner Gp
00***50Retainer; (Ring)1
08***36Air Cleaner As1
1N***61Nut-Special1
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1g-5445 Air Cleaner Gp
06***54Indicator; (Air Restriction)1
08***36Air Cleaner As1
08***26Hose As1
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1w-1653 Cartridge Gp-Turbocharger
0S***16Screw,Cap,Hexagon H Receptacle Mtg; Bolt Brackets To Firewall Assembly4
12***63Wheel-Compressor1
1P***20Ring-Seal1
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2w-0795 Lines Gp-Air
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting4
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter3
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
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8n-0080 Manifold Gp-Exhaust
10***06Manifold-Exhaust; (End)2
10***12Manifold-Exhaust2
10***12Spacer; (11.13x19.05x53-mm Thk)16
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1g-5446 Muffler Gp
08***62Band-Mounting2
08***83Guard As1
08***70Tube1
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7n-1830 Shield Gp-Manifold -Lh
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case6
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine2
11***23Spacer; (11.13x19.05x19-mm Thk)4
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4w-9142 Turbocharger Gp
1S***95Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold1
1W***80Turbocharger Group1
2N***65Bolt-High Temperature; (3/8-16x1.75-In)4
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1w-5580 Turbocharger Gp
1W***53Cartridge Group-Turbocharger1
1W***80Turbocharger Group1
6N***85Housing-Turbine; (Turbine)1
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Air System
087-0451 Control Gp-Air
08***51Control Group-Air1
08***91Adapter1
1G***64Valve As; (Power Takeoff Clutch)1
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087-0452 Lines Gp-Air Tank
00***63Elbow, 90 Deg Street, 3/4in. N.P.T.1
00***26Connector; (Flared)(3/4-16 Thd, 47 mm Long)1
08***93Tank; (Compressor)1
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8c-0496 Lubricator Gp-Air
03***50Locknut, Hex., 1/4in.-20 N.C.9
08***95Coupling-Half1
08***56Fitting2
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087-0450 Tank Gp-Air
00***63Elbow, 90 Deg Street, 3/4in. N.P.T.1
00***03Adapter-Pipe1
00***07Elbow; (90 Degree)1
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Basic Engine
7n-7700 Air Compressor Gp
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***466
2B***58Plug--To Block Upper Front Air Manifold3
3B***07Washer,Lock; Tube To Torque Converter,Tube To Oil Cooler And Tube To Hose4
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7n-7722 Air Compressor Gp
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly5
1D***19Nut-Retainer To Fan Bracket Assembly3
1L***76Stud; (1/2-13x3.54-In)2
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4n-1092 Balancer Gp
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold4
1B***82Bolt (1.25 In. Long X .313 In. Dia.)1
1W***49Shaft-Balance Weight1
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7w-7308 Belt Tightener Gp
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting2
1A***60Capscrew, Hex Head (1/2 - 13 X 2 G5); (Hex Head) (1/2-13x2 Gd 8 Z)2
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case4
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4n-0963 Camshaft Gp
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
10***74Gear-Camshaft Drive; (86-Teeth)1
1B***05Key; (Woodruff)1
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6i-4624 Cover Gp-Accessory Drive
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)3
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case1
0S***66Bolt-Pulley To Crankshaft Adapter3
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4n-6866 Cover Gp-Cylinder Block
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly12
23***37Seal-Integral1
23***71Seal-Integral1
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6i-4625 Cover Gp-Front Housing
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case1
2P***74Stud-Taperlock; (3/8-16x4.2-In)3
2P***72Cover Block R.H. Side1
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6n-3894 Cover Gp-Oil Pan -Engine
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
20***31Plug-Drain; (Magnetic)(Engine Oil Pan)1
2Y***37Plug2
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6i-4622 Cover Gp-Valve Mechanism
27***83Seal-O-Ring4
2N***09Clamp; (V-Band)1
4F***90Seal (2.10" Inside Diameter)1
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1w-5009 Crankshaft As
1W***09Crankshaft As1
4N***84Dowel; (.75 Long)1
7N***91Gear-Crankshaft; (80-Teeth)1
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1w-5010 Crankshaft Gp
1W***09Crankshaft As1
1W***10Crankshaft Group; Crankshaft Group1
25***52Plate-Thrust; (Crankshaft)2
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110-3779 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)8
11***79Cylinder Block As1
14***17Seal-O-Ring; (140.20mm Id)8
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1w-5081 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)24
1W***81Cylinder Block As1
2W***00Liner-Cylinder Block8
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1w-5082 Cylinder Block Gp
10***23Insert-Liner Seat; (5.21-mm Thk)(5.21mm Thk)0
11***27Seal-O-Ring; (19.18mm Id)4
11***09Cylinder Block As1
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7w-2225 Cylinder Head As
14***40Cylinder Head As1
17***88Guide-Valve; (Standard)16
2N***75Dowel8
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7w-2223 Cylinder Head As
1W***83Insert-Valve Seat; (Exhaust)(Standard)8
3B***23Core Plug--Flywheel Housing Pinion Shaft Hole8
3B***45Plug Flywheel Housing Turbocharger Drain Hole6
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143-0041 Cylinder Head As
14***40Cylinder Head As1
14***41Cylinder Head As1
17***88Guide-Valve; (Standard)16
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143-0040 Cylinder Head As
14***40Cylinder Head As1
1W***83Insert-Valve Seat; (Exhaust)(Standard)8
3B***23Core Plug--Flywheel Housing Pinion Shaft Hole8
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105-3788 Cylinder Head As
10***88Cylinder Head As1
1W***83Insert-Valve Seat; (Exhaust)(Standard)8
3B***23Core Plug--Flywheel Housing Pinion Shaft Hole8
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141-1207 Cylinder Head Gp
12***21Valve-Exhaust8
12***22Valve-Inlet8
14***07Cylinder Head Group1
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4w-7005 Cylinder Head Gp
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)11
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
0S***08Bolt-Support To Starting Engine Timing Gear Housing1
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7w-2224 Cylinder Head Gp
10***88Cylinder Head As1
11***67Valve (Exhaust)8
11***68Valve (Inlet)8
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7w-5290 Damper Gp
1A***03Bolt 12.07 cm(4.75 In.) Long6
4D***04Washer,Flat Cover Mtg,Accessory Drive6
4W***89Damper As1
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9n-0725 Drive Gp-Accessory
5P***40Seal-O-Ring1
6B***83Nut,Plain,Hexagon Lever1
7N***22Gear-Compressor Drive; (46-Teeth)1
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7w-6085 Drive Gp-Auxiliary
0T***73Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.)1
1B***17Ball Bearing1
1K***85Ring Part Of Kit P/N 1w***461
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7w-5288 Drive Gp-Fan
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender6
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)1
0T***65Bolt--3/8" X 3 1/2"--Use As Required; Bolt 5t***56 Plate To Cover Gp 4n***722
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7n-3060 Flywheel Gp
0S***01Bolt 2.75 In. (69.85 mm) Long12
4D***04Washer,Flat Cover Mtg,Accessory Drive12
4N***14Gear; (113-Teeth)(Flywheel Starter)1
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7n-2840 Gear Gp-Front -Timing
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
11***17Plate-Thrust1
11***12Shaft-Drive Idler1
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4n-3825 Gear Gp-Rear
1B***75Bolt (" " " ); Bolt ( " " " )4
4N***25Gear Group-Rear; Rear Timing Gear Group1
4W***85Gear-Camshaft; (86-Teeth)1
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4n-1890 Housing Gp-Flywheel
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
11***92Housing-Flywheel1
16***94Gasket1
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4n-5226 Housing Gp-Front
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender3
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)2
16***45Gasket-Cylinder Block1
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7n-1750 Lifting Gp-Engine
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine8
5P***45Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate)8
7N***50Lifting Group; Engine Lifting Group1
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7n-8230 Lines Gp-Air Compressor
00***43Elbow 5wd342 - Up Including 5wd329 - 335, 5wd337 - 3401
0S***50Clip (Small)1
0S***17Bolt --Use Open Hole In Compressor Body2
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9n-1225 Mounting Gp-Alternator
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
10***52Rod-Control1
1B***30Nut-- Flame Arrestor Or Adapter To Pipe Assembly2
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086-8409 Mounting Gp-Engine
00***07Elbow; (90 Degree)1
08***13Bar1
08***09Mounting Group-Engine1
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4n-1733 Pan Gp-Oil -Engine
2P***03Bolt-Washer Head; (3/8-16x1.25-In)32
4N***51Gasket; (Engine Oil Pan)1
4N***33Pan Group-Oil; -Engine1
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2w-9054 Piston & Rod Gp
13***61Ring-Piston; (Top)(Top)1
16***78Rod As-Connecting1
2P***17Ring-Piston; (Intermediate)(Intermediate)1
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4n-1718 Rocker Arm Gp
00***03Ring-Retaining2
0L***22Plug (.656" Dia.)2
10***03Screw; (3/8-24x1.67-In)(Intake)8
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319-7401 Seal Gp-Crankshaft -Front
14***67Seal Group-Crankshaft; (Front)1
31***01Seal Group-Crankshaft; -Front1
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319-0785 Seal Gp-Crankshaft -Rear
14***68Seal-Crankshaft; (Rear)(Flywheel Housing)1
31***85Seal Group-Crankshaft; -Rear1
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6n-6499 Support Gp-Engine -Front
1B***86Bolt-Bracket Assembly To Timing Gear8
2M***49Washer-Retainer To Fan Bracket Assembly8
6N***99Support Group-Engine; Engine Support Group-Front1
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4n-4298 Valve Mechanism Gp
10***88Valve Lifter Assem16
2N***42Screw; (3/8-24x1-In)(Bridge Adjusting)2
2P***45Bolt-Head Assembly To Cylinder Block8
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Braking System
1g-6002 Brake Gp
1G***02Brake Group1
1G***84Lines Group-Conveyor1
1G***85Valve & Mtg Group-Conveyor Speed1
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Cooling System
6i-4618 Coolant Conditioner Gp
00***98Elbow (For Use With Deep Pan)1
0S***14Bolt (.25" Diameter-.50" Long)2
0T***55Bolt; (3/8-16x4.25-In)(Location S)2
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7w-2206 Cooler Gp-Engine Oil
10***77Seal-O-Ring; (100.97mm Id)2
7C***39Core As; (Engine Oil Cooler)1
7W***06Cooler Group-Engine Oil1
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4n-3093 Fan Gp-Blower
4N***91Spider As; (8-Blade)1
4N***93Fan Group-Blower1
5P***66Capscrew; (Hex Hd) (1/2-13 Nc X 1 1/2) (Gd 8 Z)6
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6i-4623 Lines Gp-Water
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender1
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter7
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***822
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9l-6414 Lines Gp-Water
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting4
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)3
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***823
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137-1338 Pump Gp-Water
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
10***30Bearing As-Roller1
11***21Plug-Felt; (Water Pump Housing)1
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4n-7498 Pump Gp-Water
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly1
1A***35Bolt 2.00 In. (5.08 cm) Long1
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4n-1951 Pump Gp-Water
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly1
1D***17Nut-Plate And Angle Assembly To Hydraulic And Fuel Tanks; Nut Plate And Angle Assembly To Hydraulic And Fuel Tanks4
4N***51Pump Group-Water; Water Pump Group1
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105-0197 Pump Gp-Water
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
10***97Pump Group-Water1
10***85Retainer1
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134-1486 Pump Gp-Water
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
10***85Retainer1
10***90Housing As-Pump1
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7w-5291 Radiator Gp
1B***71Clip--Cable To Flywheel Housing2
2P***30Gasket Assem.1
2S***46Retainer-Gasket1
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1g-5444 Radiator Gp
08***98Mount; (Lower Oil Cooler)2
08***99Mount; (Upper Oil Cooler)2
08***00Bracket; (Lower Oil Cooler)1
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7w-8916 Radiator Gp
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter56
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***8224
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly24
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Electrical And Starting System
3e-6328 Alarm Gp
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
3E***65Wedge; (Receptacle Lock) (2 Pin)1
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4n-3986 Alternator Gp-Charging
10***31Fan-Alternator; (11-Blade)1
10***32Collar; (Alternator)1
10***62Kit-Alternator Terminal1
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266-7227 Alternator Gp-Charging
08***53Lamp; (24-Volt)(Remote Engine Stop)1
08***41Switch; (Machine/Engine Remote Stop)1
08***48Block - Contact1
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1g-7250 Box Gp-Control -Console
08***53Lamp; (24-Volt)(Remote Engine Stop)1
11***73Knob; (Red)(Emergency Stop)1
11***75Switch As-Push Button; (Parking Brake)1
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7r-9103 Box Gp-Control
03***93Screw-Machine; (10-32x19.05-mm)4
0T***84Bolt 19 mm(.75 In.) Long1
1G***40Enclosure-Electrical1
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1g-7249 Box Gp-Control -Console
08***53Lamp; (24-Volt)(Remote Engine Stop)1
11***73Knob; (Red)(Emergency Stop)1
11***75Switch As-Push Button; (Parking Brake)1
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1g-8021 Box Gp-Junction
03***50Locknut, Hex., 1/4in.-20 N.C.8
10***19Angle1
10***20Plate1
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101-9199 Control & Mtg Gp-Water Spray
10***99Control & Mtg Group-Water Spray1
3L***87Lockwasher 7.24mm(.285in.)O.D.; (3.7x7.24x.48mm Thk)3
4D***36Switch As-Toggle; (Engine Protection Override)3
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102-0524 Control Gp-Electronic
03***49Nut-Self Lock; (No.10.Unc)3
10***24Control Group-Electronic1
1G***49Box Group-Control; -Console1
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1g-6954 Electrical Gp-Console
1G***54Electrical Group-Console1
1G***66Sensor Group; (Cutter Box)2
1G***37Plate5
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1g-6952 Electrical Gp-Lighting
10***36Plate1
10***64Mount-Sandwich3
1G***52Electrical Group-Lighting1
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1g-6953 Electrical Gp-Power
03***97Boot1
1G***53Electrical Group-Power1
1G***21Box Group-Junction1
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7r-4436 Control Gp-Additive
08***35Counter0
08***36Kit-Hardware0
08***47Receptacle As0
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9x-1439 Lamp Gp-Flood
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
8T***29Pin-Connector; (16-Ga To 18-Ga)(Throttle Position Sensor)2
9X***39Lamp Group-Flood; -Rear-Ladder Access-Engine Work Light1
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3e-6466 Lamp Gp-Signal
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
3E***71Wedge; (Receptacle Lock) (3 Pin)1
3E***66Lamp Group-Signal; -Rear Turn, Parking1
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3e-6467 Lamp Gp-Signal
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
3E***67Lamp Group-Signal; -Rear Turn; Stop, Tail1
5P***37Washer 5t***54 Plate To 7t***28 Cable As3
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110-7563 Lamp Gp-Warning Beacon -Strobe Light
08***42Resistor1
11***63Lamp Group-Warning Beacon; -Strobe Light1
1G***68Connector As1
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338-1132 Lamp Gp-Warning Beacon -Amber, Strobe
1G***68Connector As1
1G***78Plate-Relay1
33***32Lamp Group-Warning Beacon; -Amber, Strobe1
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9x-9556 Lamp Gp-Warning Beacon
1g-7455 Panel Gp-Relay
10***15Cover-Terminal2
17***01Solenoid As; (Governor Shut Off)1
1G***55Panel Group-Relay1
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4p-0303 Shutoff Gp-Electrical
04***65Screw 19.05 mm(.750 In.) Long4
3B***02Washer,Lock Circuit Breaker Uoc:Bsv,Bsx2
3H***80Nut,Plain,Hexagon Terminal Stud3
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3t-4704 Solenoid As-Starting Motor
03***21Shim Lever Housing1
03***23Bolt; (1/4-28x1-In)13
1H***23Packing,Preformed Part Of Kit P/N 5r***251
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7t-8854 Solenoid As-Starting Motor
03***21Shim Lever Housing1
03***23Bolt; (1/4-28x1-In)13
1H***23Packing,Preformed Part Of Kit P/N 5r***251
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6v-0885 Starting Motor Gp-Electric
2H***22Lockwasher2
6F***45Nut-Full; (3/8-24-Thd)2
6V***85Starting Motor Group-Electric; -Cold Weather1
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3t-8967 Starting Motor Gp-Electric
3T***67Starting Motor Group-Electric; -24 Volt1
4D***04Washer,Flat Cover Mtg,Accessory Drive3
4N***59Gasket; (Starting Motor)3
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5n-2685 Starting Motor Gp-Electric
03***21Shim Lever Housing1
03***23Bolt; (1/4-28x1-In)13
04***65Screw 19.05 mm(.750 In.) Long4
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3t-8955 Starting Motor Gp-Electric
3T***55Starting Motor Group-Electric2
4D***04Washer,Flat Cover Mtg,Accessory Drive3
4N***59Gasket; (Starting Motor)3
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7n-0718 Switch Gp-Disconnect -Battery
08***86Clamp18
08***99Bar5
08***00Bar2
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9g-7641 Switch Gp-Start -Engine, Key
01***30Lockwasher8
03***60Cup-Roller Bearing1
03***61Cone-Roller Bearing1
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Engine Arrangement
6i-2450 Engine Ar
10***63Lines Group-Fuel Filter1
16***13Pump Group-Engine Oil1
1N***23V-Belt Set; (Includes 2-Belts)(Includes 2 Belts)1
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Frame And Body
8t-4039 Counterweight Gp
08***96Bracket2
08***21Plate1
08***25Plate1
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087-0051 Door Gp-Access
08***05Cowling; (Front)1
08***06Cowling; (Top)1
08***07Cowling; (Side)1
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1g-6826 Enclosure Gp-Engine
08***76Cap-Leg1
08***36Cylinder Group-Hydraulic1
1B***11Nut-Slotted1
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6r-3999 Frame Gp
08***64Rod-Threaded1
08***76Cap-Leg1
09***57Hose As2
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6r-3984 Frame Gp-Telescoping
08***64Rod-Threaded1
08***76Cap-Leg1
09***57Hose As2
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6r-3985 Frame Gp-Telescoping
08***42Idler Group1
08***93Cylinder1
08***94Piston1
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6r-3986 Frame Gp-Telescoping
08***41Fitting1
08***93Cylinder1
08***94Piston1
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134-9927 Idler Gp-Track
13***27Idler Group-Track1
1C***74Pointer; (Left Rear)1
4B***58Screw (Identification Plate) Mounting8
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1g-9282 Indicator Gp-Leg
08***79Tube3
1G***62Ladder As3
1G***82Indicator Group-Leg1
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086-9862 Indicator Gp-Leg -Rh
08***62Indicator Group-Leg; -Rh1
08***79Tube3
1G***62Ladder As3
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1g-9143 Ladder Gp
1G***43Ladder Group1
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)4
6B***78Pin-Track Link28
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6y-8950 Link As-Track
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine4
2M***49Washer-Retainer To Fan Bracket Assembly4
3N***95Ring (For Extreme Temperatures)2
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8t-4037 Mount As-Sensor
03***73Bolt; (3/8-16x1.5-In)4
08***40Pin-Averaging Ski; (Used For Mounting)1
1C***65Retainer2
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3t-4352 Roller Gp-Track
03***73Bolt; (3/8-16x1.5-In)4
1C***65Retainer2
1G***51Guide As; (Rh)1
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081-9035 Idler Gp-Track
08***35Roller-Idler1
1C***74Pointer; (Left Rear)1
4B***58Screw (Identification Plate) Mounting8
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086-9865 Ski Gp-Averaging -Rh
08***65Ski Group-Averaging; -Rh1
3B***89Fitting-Grease; (Fan And Alternator Drive)1
8C***46Coupler1
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086-9859 Ski Gp-Averaging
07***67Spring1
08***20Arm-Sensor Support, . Support1
08***59Ski Group-Averaging1
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086-9861 Support Gp-Grade Sensor
08***61Support Group-Grade Sensor1
6R***71Track Group3
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7r-8832 Tensioner Gp-Track
6R***71Track Group1
7R***32Tensioner Group-Track1
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6r-4039 Track Ar-Rubber
6R***79Track Group1
6R***80Track Group1
6R***81Track Group1
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6r-4040 Track Ar-Rubber -(Front)
07***09Gasket1
07***67Spring1
08***87Guide1
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6r-3980 Track Gp
08***35Roller-Idler1
3B***36Pin-Cotter1
3B***85Fitting-Hydraulic; Fitting 45 Degrees Angle--Used As Required2
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6r-3979 Track Gp
03***92Seal; (126.59mm Id)1
5E***24Fender As1
5E***26Fender As-Front1
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6r-3983 Track Gp
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)108
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)4
6R***83Track Group1
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6r-3982 Track Gp
13***27Idler Group-Track1
3B***36Pin-Cotter1
3B***85Fitting-Hydraulic; Fitting 45 Degrees Angle--Used As Required2
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6r-4370 Track Gp
06***70Pin2
08***36Support-Rh1
10***41Plate2
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6r-4371 Track Gp
06***70Pin2
08***36Support-Rh1
10***41Plate2
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6r-3978 Track Gp
03***92Seal; (126.59mm Id)1
5E***24Fender As1
5E***26Fender As-Front1
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6r-3981 Track Gp
13***27Idler Group-Track1
3B***36Pin-Cotter1
3B***85Fitting-Hydraulic; Fitting 45 Degrees Angle--Used As Required2
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086-9860 Wheel Gp-Grade Sensor
08***60Wheel Group-Grade Sensor1
08***08Hose As1
09***57Hose As1
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Fuel System
1w-8685 Control Gp-Governor
1W***85Control Group-Governor; Governor Control Group1
7B***42Bolt, Hex. Hd., 1/4in.-20 N.C. X 1 1/4in.1
7N***57Control Group-Governor1
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7n-7457 Control Gp-Governor
7N***56Spring1
7N***57Control Group-Governor1
8S***03Ring-Retaining1
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2w-3986 Drive Gp-Governor & Fuel Pump
2W***83Spring; (Inner)2
2W***84Spring; (Middle)2
2W***85Spring; (Outer)2
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9y-3336 Fastener Gp-Fuel Inj Pump
05***94Bolt-12 Point Head; (3/8-16x1.75-In)1
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender1
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting4
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8h-7204 Filter Gp-Fuel
1L***69Ring-Retaining1
1N***83Base-Fuel Filter1
2H***29Ring - Retaining External1
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4n-1981 Filter Gp-Fuel -Engine
1N***89Base As-Filter; (Fuel)1
1R***49Filter-Fuel; (Advanced Efficiency)(Secondary)1
4N***81Filter Group-Fuel1
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4w-6013 Governor Gp
03***59Screw-Head Bolt4
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly1
13***07Seal-Lip Type; (6.39mm)2
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7n-4574 Housing Gp-Fuel Pump
1P***32Ball,Bearing8
1P***34Pin,Grooved8
4M***74Pin-Lifter Guide4
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1g-5447 Lines Gp-Fuel
06***93Bushing-Reducer; (1/2-14 Nptf)2
1G***47Lines Group-Fuel1
1G***36Hose As1
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6n-8969 Lines Gp-Fuel Filter -Lh
03***42Elbow Hose Assembly To1
03***47Elbow-Filtered Fuel From Based Assembly3
03***08Tee1
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108-8763 Lines Gp-Fuel Filter
03***42Elbow Hose Assembly To1
03***47Elbow-Filtered Fuel From Based Assembly3
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold2
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6i-0030 Lines Gp-Fuel Injection
10***38Screw-Machine1
10***39Screw As2
12***45Line As-Fuel Injection; (No. 5)1
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4w-6310 Lines Gp-Fuel Injection
06***38Spacer; (11.12x19.05x7.9-mm Thk)4
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
1S***04Seal-O-Ring (18.42mm Id)2
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4n-2328 Meter Gp-Service
1P***23Kit-Meter Window Service; (Window)1
4M***03Packing,Preformed Hourmeter Mtg1
4N***28Meter Group-Service; Meter Group-Service1
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6n-3212 Mounting Gp-Primary Fuel Fltr
00***43Elbow 5wd342 - Up Including 5wd329 - 335, 5wd337 - 3401
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***822
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case2
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4w-7018 Injector Gp-Fuel
11***62Seal-O-Ring1
1W***91Tip As-Fuel Injector1
27***89Seal-Washer1
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4w-7374 Plate Gp-Governor Adapter
03***60Bolt-Self Locking; (5/16-18x1.0)2
11***11Sleeve-Valve1
11***12Riser-Governor1
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7w-1983 Pump Gp-Fuel Injection
0S***18Bolt; (5/16-18x1-In)(Hydraulic Pump)3
11***18Seal-O-Ring; (26.64mm Id)8
1T***84Bolt-Socket Head; (5/16-18x1-In)1
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7w-0561 Pump Gp-Fuel Injection
1W***87Valve As-Check; (Fuel Injection Pump)1
1W***71Bonnet-Valve1
7C***78Bolt-Plunger Gear; (Fuel Pump)1
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4n-3287 Pump Gp-Fuel Priming
10***08Pump As; (Fuel Priming)1
1P***36Gasket; (Fuel Priming Pump)(Fuel Priming Pump)1
4N***87Pump Group-Fuel Priming; Pump Group-Fuel Priming1
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4n-1101 Pump Gp-Fuel Transfer
0S***17Bolt --Use Open Hole In Compressor Body2
2D***76Bearing-Flange1
4N***91Housing Assem.1
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4w-5477 Pump Gp-Fuel Transfer
13***36Gasket-Liquid; (8-Oz Can)0
1J***71Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter1
1W***77Shaft-Idler1
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4w-7180 Pump Gp-Gov, Fuel Inj & Tfr
2N***28Washer; (Spring-Two Waves)2
2P***43Gasket1
2P***56Washer; (1.17x1.5x0.06-In Thk)(Flat)1
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082-2695 Tank Gp-Fuel
08***95Tank Group-Fuel1
08***02Cover; (Access Door)1
08***03Tank-Fuel1
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4n-4267 Torque Control Gp
1P***52Insulator,Bushing Governor1
1P***58Insulator .813mm(.032 In.) Thick1
2S***91Bar-Stop; 2.997mm(.118in)Thick1
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Hydraulic System
1g-8466 Control Ar-Conveyor
1G***66Control Ar-Conveyor1
1G***82Valve & Mtg Group-Press Control1
1G***83Lines Group-Hydraulic1
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1g-8463 Control Ar-Hydraulic
1G***38Valve Group-Control1
1G***39Valve Group-Control1
1G***63Control Ar-Hydraulic1
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1g-8464 Control Ar-Hydraulic
1G***64Control Ar-Hydraulic1
2K***73Locknut Inside Guard Assembly1
4D***20Bolt-Hex Socket Head; (3/8-16x38.1mm)1
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1g-6822 Control Gp-Hydraulic
1G***22Control Group-Hydraulic1
2K***73Locknut Inside Guard Assembly1
4B***06Setscrew-Socket; (1/4-20x0.25-In)1
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8c-9480 Cylinder Gp-Hydraulic
11***21Seal1
11***22Wiper-Rod1
11***23Bag-Polyethylene1
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7r-9550 Cylinder Gp-Hydraulic
2K***37Nut (National Fine); (3/4-16-Thd)2
2K***73Locknut Inside Guard Assembly1
4D***20Bolt-Hex Socket Head; (3/8-16x38.1mm)1
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7r-9552 Cylinder Gp-Hydraulic -Elevation
08***66Ring-Retaining1
2K***68Locknut1
4B***08Setscrew; (1/4-20x0.5-In)1
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1g-6047 Cylinder Gp-Hydraulic
1G***47Cylinder Group-Hydraulic1
2K***73Locknut Inside Guard Assembly1
2K***68Locknut1
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082-2836 Cylinder Gp-Hydraulic
08***36Cylinder Group-Hydraulic1
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold2
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting4
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115-3357 Cylinder Gp-Hydraulic
00***41Elbow-Pipe1
11***57Cylinder Group-Hydraulic1
1P***98Fitting2
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7n-2645 Drive Gp-Pump
10***33Elbow1
6V***00Seal-O-Ring (Id=30.01mm)1
7N***45Drive Group-Pump1
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101-9198 Filter & Mtg Gp-Hydraulic
07***17Seal-O-Ring2
07***80Gasket2
07***40Gasket4
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1g-6008 Filter & Mtg Gp-Hydraulic
07***17Seal-O-Ring1
07***80Gasket1
07***50Kit-Filter; (Standard Efficiency)1
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8t-9960 Filter Gp-Oil
03***70Guide1
03***74Washer; (6.6x19x1.5-mm Thk)1
03***15Bolt 5t***53 Cable As To 5t***18 Lever1
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8t-4021 Filter Gp-Oil
12***13Valve & Mtg Group-Solenoid1
12***75Lines Group-Hydraulic1
8T***21Filter Group-Oil; (Hydraulic Oil)1
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122-8289 Hydraulic Ar-Auxiliary
08***91Hose As2
11***57Cylinder Group-Hydraulic4
11***98Plate2
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115-7923 Lift Gp-Hydraulic Blade
08***00Bar2
11***23Lift Group-Hydraulic Blade1
1G***90Tube As1
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1g-8484 Lines Gp-Conveyor
1G***84Lines Group-Conveyor1
1G***36Hose As2
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve2
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1g-5860 Lines Gp-Conveyor
08***00Bar2
1G***60Lines Group-Conveyor1
1G***90Tube As1
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1g-5863 Lines Gp-Conveyor
08***09Adapter2
08***73Clamp32
08***35Tee1
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101-9197 Lines Gp-Hydraulic
06***10Plug-Steel Pipe1
08***79Elbow1
08***73Clamp4
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122-7075 Lines Gp-Hydraulic
06***10Plug-Steel Pipe1
08***79Elbow1
08***73Clamp4
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1g-8483 Lines Gp-Hydraulic
10***38Valve Group-Check; (Mixing Chamber Tilt Cylinder)1
12***43Hose As1
12***18Hose As1
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1g-5859 Lines Gp-Hydraulic
08***34Hose As1
1G***59Lines Group-Hydraulic1
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain2
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1g-5865 Lines Gp-Hydraulic
00***01Elbow (To Serial No 1md225)2
00***04Elbow2
00***21Tee-Union1
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1g-5854 Lines Gp-Hydraulic Oil Cooler
06***10Plug-Steel Pipe1
08***79Elbow1
08***73Clamp4
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1g-5856 Lines Gp-Lift Cylinder
1G***56Lines Group-Lift Cylinder1
1G***06Tube As1
1G***12Tube As1
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1g-5855 Lines Gp-Lift Cylinder
08***73Clamp36
1G***55Lines Group-Lift Cylinder1
1G***13Tube As1
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1g-5866 Lines Gp-Lift Cylinder
08***78Elbow; (90 Deg)1
08***39Bracket1
08***02Elbow1
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1g-5864 Lines Gp-Lift Cylinder
08***91Adapter1
08***91Hose As1
1G***64Lines Group-Lift Cylinder1
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1g-8489 Lines Gp-Lift Cylinder
08***27Valve Group; (Restrictor)1
1G***14Tube As1
1G***20Tube As1
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1g-5861 Lines Gp-Lift Cylinder
1G***61Lines Group-Lift Cylinder1
1G***53Hose As1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve2
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1g-5867 Lines Gp-Return & Filter
08***27Valve Group; (Restrictor)2
08***10Hose As1
1G***73Hose As1
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1g-8487 Lines Gp-Swing Cylinder
11***14Bolt8
1G***09Shaft-Output1
1G***38Spacer1
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1g-5862 Lines Gp-Swing Cylinder
08***27Valve Group; (Restrictor)2
08***10Hose As1
1G***73Hose As1
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7r-8278 Motor Gp-Gerotor
1C***10Arm-Torque1
7R***78Motor Group-Gerotor2
8M***30Bolt-12 Point Head (1/2-13x1.25in); (1/2-13x1.25-In)4
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8c-7014 Motor Gp-Gerotor
00***55Ring-Retaining1
07***25Kit-Seal; (Incl Parts Marked J)1
07***11Kit-Seal1
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101-3060 Motor Gp-Hydraulic
10***60Motor Group-Hydraulic1
14***03Cover-Front1
1G***94Key-Camshaft2
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8t-6276 Motor Gp-Hydraulic
1G***94Key-Camshaft2
1G***95Bearing2
1G***96Ring-Snap2
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1g-5449 Motor Gp-Hydraulic
00***55Ring-Retaining1
03***44Spring2
03***51Washer2
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8c-1967 Motor Gp-Hydraulic
10***50Seal-Shaft1
10***40Ball Bearing1
1L***68Ring-Retaining1
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102-3690 Motor Gp-Piston
03***55Screw; (1/4-20x1-In)(1/4-20x1in)1
08***70Bracket1
08***71Film; (Line Reference)1
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8c-3866 Motor Gp-Piston
0S***20Bolt--Customer Grounding Bolt2
0S***21Bolt --Brace To Starting Engine Mounting Pad; Bolt-- Brace To Starting Engine Mounting Pad2
1A***79Capscrew (5/16 - 18 Nc X 1 1/2 Gd5, Hex)4
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8c-1842 Pendulum Gp
08***00Stud8
08***02Gear Set1
08***04Bushing-Terminal2
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086-9838 Pendulum Gp
00***37Pin; (43.3mm)4
00***41Retainer2
03***37Pin1
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033-0802 Kit-Pump
03***02Piston Group-Pump1
10***38Clamp-Half8
1G***15Hose As1
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8t-5518 Pump Gp-Piston
08***22Fitting; (Pipe)1
08***59Cover1
08***04Tank1
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7r-8276 Pump Gp-Gear
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
6R***21Gasket1
6R***22Gasket1
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1g-8057 Pump Gp-Piston
1G***57Pump Group-Piston1
1G***86Valve & Mtg Group-Conveyor Swing1
1G***87Lines Group-Swing Cylinder1
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1g-8465 Swing Ar-Conveyor
1C***59Valve; (Conveyor Speed Control)1
1G***65Swing Ar-Conveyor1
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)1
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082-0363 Tank Gp-Hydraulic
08***63Tank Group-Hydraulic1
1G***31Bracket2
4L***54Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller)4
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1g-8485 Valve & Mtg Gp-Conveyor Speed
03***50Locknut, Hex., 1/4in.-20 N.C.4
03***29Elbow1
07***35Valve; (Spray Bar)1
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101-9196 Valve & Mtg Gp-Conveyor Swing
10***96Valve & Mtg Group-Conveyor Swing1
10***59Valve As-Control1
1G***87Bracket1
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1g-8486 Valve & Mtg Gp-Conveyor Swing
1G***86Valve & Mtg Group-Conveyor Swing1
1G***25Valve Group-Pressure Control1
1G***45Valve Group-Relief1
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1g-8482 Valve & Mtg Gp-Press Control
10***31Manifold-Inlet1
10***32Kit-Seal; (Inlet Manifold Relief Valve)1
10***33Valve-Control1
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122-4613 Valve & Mtg Gp-Solenoid
10***31Manifold-Inlet1
10***32Kit-Seal; (Inlet Manifold Relief Valve)2
10***33Valve-Control1
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1g-7238 Valve Gp-Control
10***31Manifold-Inlet1
10***32Kit-Seal; (Inlet Manifold Relief Valve)1
10***36Cover1
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5e-4755 Valve Gp-Control -Pressure Reducing
1C***18Plug1
2H***29Ring - Retaining External1
3N***13Seal-Lip Type1
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1g-7239 Valve Gp-Control
7r-4634 Valve Gp-Sensor
10***18Coil1
12***33Valve-Solenoid1
2U***09Nut-Solenoid; (1/2-18-Thd)1
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7r-7349 Valve Gp-Sensor
7R***49Valve Group-Sensor1
8T***71Belt-Conveyor1
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122-4520 Valve Gp-Solenoid
08***54Bracket1
08***75Support As-Clutch1
12***20Valve Group-Solenoid1
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Implements
102-9290 Belt Ar-Conveyor
06***65Bolt; (1/2-13x1.25-In)12
08***82Locknut1
08***83Bolt6
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1g-6818 Clutch Gp-Power Take-Off
10***99Support As1
10***01Tube As1
10***04Plate2
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6r-0311 Clutch Gp-Power Take-Off
08***46Block; (Port)1
08***47Nut1
08***48Block-Mounting1
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101-4898 Control Gp-Backup
08***46Block; (Port)1
08***47Nut1
08***48Block-Mounting1
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117-8529 Conveyor Ar-First Stage
08***66Hopper1
08***23Nut-Jam2
10***68Bushing3
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082-2714 Conveyor Ar-First Stage
08***23Nut-Jam1
08***14Conveyor Ar-Lower1
08***46Block; (Port)1
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103-1928 Conveyor Gp-Second Stage
08***33Bolt42
08***44Bar; (Clamp)10
08***18Support-Flashing-Rh1
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6r-4008 Conveyor Gp-Second Stage
08***02Plate2
11***63Bolt-Socket Head8
12***33Shim; (0.01-In Thk)4
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1g-6817 Coupling Gp-Torque
08***26Shim; .1345 In(3.42mm)2
08***27Shim; .0598 In(1.52mm)1
08***28Shim; .0299 In(.76mm)2
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1g-8082 Cover Gp-Conveyor
1G***08Shaft-Drive1
1G***15Spindle As1
1G***82Cover Group-Conveyor1
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1g-5932 Drive Gp-Rotor
06***61Ring-Retaining3
06***93Ring-Retaining3
07***36Seal-O-Ring1
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082-1054 Drive Gp-Rotor
08***54Drive Group-Rotor1
1G***44Bracket2
1G***45Bracket2
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1g-6906 Drive Gp-Rotor
10***73Belt-Conveyor1
11***66Plate2
11***67Plate4
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119-0797 Extension Ar-Conveyor
08***21Housing As-Rotor1
08***22Door-Rh1
08***23Door; (Lh)1
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082-2740 Housing Gp-Rotor
08***40Housing Group-Cutter1
1G***15Tube As1
1G***42Tube As1
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6r-3277 Housing Gp-Output
08***54Housing As-Rotor1
08***55Door-Rh1
08***56Door; (Lh)1
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082-2738 Housing Gp-Rotor
06***66Bolt; (3/4-10x1.642-In)2
08***79Bracket-Idler1
08***80Adjuster-Idler1
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082-2963 Idler Gp-Rotor Drive
08***63Idler Group-Cutter Drive1
10***67Valve Group-Check1
10***84Tee-Face Seal1
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1g-5448 Lines Gp-Conveyor Motor
08***20Bar1
08***57Bushing-Terminal1
08***90Bolt1
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101-9202 Lines Gp-Motor
10***02Lines Group-Motor1
7R***22Spacer4
7R***51Reducer Group-Speed1
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1g-6819 Reducer Gp-Speed
00***53Elbow-Pipe; (1/2-14 Nptf Thd)1
07***46Coupling1
07***06Coupling1
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7r-9850 Reducer Gp-Speed
06***65Bolt; (1/2-13x1.25-In)10
08***33Bolt8
08***62Decal-Warning; (Insufficient Clearance)2
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7r-9851 Reducer Gp-Speed
06***65Bolt; (1/2-13x1.25-In)10
08***33Bolt8
08***62Decal-Warning; (Insufficient Clearance)2
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1g-7525 Rotor Ar
08***54Drive Group-Rotor1
1B***74Plug,Pipe Base Assembly,Engine Oil Filter Assembly2
1G***25Rotor Ar1
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1g-7517 Rotor Ar
08***54Drive Group-Rotor1
1G***98Rotor As1
1G***17Rotor Ar1
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1g-6905 Rotor Ar
06***65Bolt; (1/2-13x1.25-In)10
08***33Bolt8
08***62Decal-Warning; (Insufficient Clearance)2
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6r-3033 Rotor Gp
10***02Lines Group-Motor1
10***23Sizer Group1
6R***33Rotor As1
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1g-7526 Rotor Gp
10***01Sizer Group1
10***02Lines Group-Motor1
1G***26Rotor Group1
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1g-6907 Rotor Gp
08***54Drive Group-Rotor1
1G***99Rotor As1
1G***07Rotor Group1
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1g-7518 Rotor Gp
00***51Stud12
1G***18Rotor Group1
6Y***68Block-Bit Holder104
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1g-9409 Sizer Ar
03***84Angle2
03***41Bar2
08***20Bar1
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1g-9408 Sizer Ar
03***59Hose Assem. 12 In. (3.05 Dm)1
03***84Angle2
08***20Bar1
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102-0323 Sizer Gp
07***27Kit-Seal; (Counterbalance Valve)1
10***23Sizer Group1
10***86Seal-O-Ring1
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101-9201 Sizer Gp
08***57Link1
08***26Frame; (Spreader)1
10***01Sizer Group1
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7r-4049 Support Gp-Second Stage
00***53Elbow-Pipe; (1/2-14 Nptf Thd)1
00***54Nipple-Pipe4
04***01Coupling-Pipe1
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8t-6273 Valve Gp-Relief
00***53Elbow-Pipe; (1/2-14 Nptf Thd)1
00***54Nipple-Pipe4
04***01Coupling-Pipe1
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Lubrication System
2n-8220 Breather Gp -Crankcase
2N***09Clamp; (V-Band)1
2N***20Breather Group; Breather Gp-Crankcase1
4F***90Seal (2.10" Inside Diameter)1
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9y-2989 Breather Gp
2N***09Clamp; (V-Band)1
4F***90Seal (2.10" Inside Diameter)1
4N***68Breather As; (Crankcase)1
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4n-2481 Fastener Gp-Oil Pump Mounting -Engine
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender2
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)1
4N***81Fastener Group-Oil Pump Mounting; Oil Pump Mounting Fastener Group1
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6n-0936 Filter Gp-Engine Oil
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 Case2
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly9
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7n-7033 Fumes Disposal Gp
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
2S***53Clip; (34.92mm Id)4
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler4
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6i-4628 Gauge Gp-Oil Level (Dipstick)
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold1
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter1
0T***65Bolt--3/8" X 3 1/2"--Use As Required; Bolt 5t***56 Plate To Cover Gp 4n***721
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8n-3034 Lines Gp-Engine Oil
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold1
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case1
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
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4w-3757 Lines Gp-Turbocharger Oil
03***49Elbow; (90 Degree, 37 Degree Flared)1
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting2
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
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4n-8734 Pump Gp-Engine Oil
1M***44Bolt; (3/8-16x2-1/4 In)2
1W***38Shaft As-Pump Drive; (8-Teeth)1
1W***39Shaft As-Idler; (8-Teeth)1
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161-4113 Pump Gp-Engine Oil
12***56Cover As-Pump1
16***13Pump Group-Engine Oil1
1M***44Bolt; (3/8-16x2-1/4 In)2
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Operator Station
1g-6823 Console Gp-Instrument
01***37Clevis-Adjustable3
08***06Bracket1
08***14Spacer1
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1g-6820 Console Gp-Operator
08***35Lever1
13***44Control Group-Handle1
1G***20Console Group-Operator1
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1g-6821 Control Gp-Direction & Speed
08***20Knob; (Black)1
13***01Rod-Input1
1G***21Control Group-Direction & Speed1
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130-3444 Control Gp-Handle
13***44Control Group-Handle1
2N***62Screw-Machine; (10-24x1.25-In)3
4B***74Washer (Required Only When Bosch Alternator Is Fitted)3
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1c-4197 Control Gp-Handle
1C***97Control Group-Handle1
2N***62Screw-Machine; (10-24x1.25-In)3
4B***74Washer (Required Only When Bosch Alternator Is Fitted)3
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1g-6824 Literature Gp
08***96Decal-Water2
08***26Decal-Warning Belt; (Moving Belt)7
08***27Decal-Warning Track; (Moving Track)4
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105-1457 Voltmeter Gp
10***57Voltmeter Group; (24-Volt)(Instrument Panel)1
5P***98Coupling, Straight, 1/4in. N.P.T.1
5R***61Fitting As1
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Power Train
8c-7001 Planetary Gp-Final Drive
08***96Bracket3
08***21Plate1
08***25Plate1
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1g-5858 Lines Gp-Hydrostatic
1G***58Lines Group-Hydrostatic1
8C***82Arm; (Counterweight)1
8H***08Bolt; (1/4-20x0.5-In)1
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Service Equipment And Supplies
1g-8832 Plate & Film Gp
1C***09Rod End1
1C***10Shoe1
1G***32Plate & Film Group1
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7x-3667 Service Gp-Cutter Bit
1C***69Shipping Group-Conveyor1
7R***32Tensioner Group-Track1
7X***67Service Group-Cutter Bit2
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1c-4569 Shipping Gp-Conveyor
7r-7806 Tool Gp
Steering System
1g-5857 Lines Gp-Steering
1G***57Lines Group-Steering1
1G***88Valve & Mounting Group1
1G***89Lines Group-Lift Cylinder1
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Water System
101-9194 Bar Gp-Spray
00***70Nipple-Strainer To Flange1
00***07Elbow; (90 Degree)2
05***26Tee1
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122-6682 Filter Gp-Water
08***64Fitting1
08***86Clamp2
12***82Filter Group-Water1
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1g-7040 Filter Gp-Water
00***70Nipple-Strainer To Flange1
00***07Elbow; (90 Degree)2
05***26Tee1
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1g-7062 Lines Gp-Water Spray
1G***62Lines Group-Water Spray1
4S***99Str. Connector, 1/4in. J.I.C. X 1/4in. N.P.T.4
5R***61Fitting As1
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8c-1679 Lines Gp-Water Spray
00***99Tee To Bushing1
00***53Elbow-Pipe; (1/2-14 Nptf Thd)1
00***43Elbow 5wd342 - Up Including 5wd329 - 335, 5wd337 - 3401
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122-3564 Lines Gp-Water Spray
00***53Elbow-Pipe; (1/2-14 Nptf Thd)1
00***33Tee-Pipe1
00***50Adapter-Pipe1
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1g-7061 Lines Gp-Water Spray -Pump Supply
08***75Adapter1
08***08Fitting1
08***57Elbow1
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1g-7438 Lines Gp-Water Spray -Quick-Fill
08***64Fitting1
08***86Clamp2
1G***38Lines Group-Water Spray; -Quick-Fill1
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132-4866 Pump & Lines Gp-Water Spray
09***99Key-Square1
09***99Key1
10***25Bolt-Socket Head4
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1g-8539 Pump & Motor Gp-Water Spray
09***99Key-Square1
09***99Key1
10***25Bolt-Socket Head4
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101-9191 Pump & Motor Gp-Water Spray
133-1128 Pump & Motor Gp-Water Spray
13***28Pump & Motor Group-Water Spray1
3E***64Receptacle Assem.; (2-Pin)1
3E***65Wedge; (Receptacle Lock) (2 Pin)1
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1g-7063 Pump & Motor Gp-Water Spray -High Pressure
00***58Elbow-Flared2
06***96U-Bolt1
08***64Fitting2
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8t-8049 Pump Gp-Water Spray
00***07Elbow; (90 Degree)1
08***64Fitting1
11***33Pump Group-Water Spray1
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1g-5442 Pump Gp-Water Spray
09***99Key-Square1
10***65Kit-Valve; (Water Spray Pump)1
10***67Kit-Plunger; (Water Spray Pump)3
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1g-9996 Pump Gp-Water Spray
07***01Volute1
07***01Frame1
07***09Slinger1
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204-3392 Pump Gp-Water Spray
12***29Spray Group-Water1
1G***38Lines Group-Water Spray; -Quick-Fill1
20***92Pump Group-Water Spray1
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1g-6969 Pump Gp-Water Spray
07***04Bearing2
07***01Volute1
07***09Slinger1
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115-4333 Pump Gp-Water Spray
09***99Key-Square1
10***65Kit-Valve; (Water Spray Pump)1
10***67Kit-Plunger; (Water Spray Pump)3
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122-6152 Pump Gp-Water Spray
10***91Pump & Motor Group-Water Spray1
10***94Bar Group-Spray1
10***96Valve & Mtg Group-Conveyor Swing1
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122-8331 Spray Ar-Water
00***70Nipple-Strainer To Flange8
03***01Hose As1
05***26Tee1
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1g-9407 Spray Ar-Water
00***70Nipple-Strainer To Flange6
03***01Hose As1
05***26Tee1
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1g-7519 Spray Gp-Water
1G***42Pump Group-Water Spray1
1G***40Filter Group-Water1
1G***60Valve Group-Manual1
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086-9847 Spray Gp-Water
08***34Nipple; (3/4 Npt X 3/4 Hose)1
08***47Spray Group-Water1
3B***90Coupling-Pipe1
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087-0039 Spray Gp-Water
08***39Spray Group-Water1
12***64Lines Group-Water Spray1
12***52Pump Group-Water Spray1
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1g-7527 Spray Gp-Water
13***66Pump & Lines Group-Water Spray1
1G***61Lines Group-Water Spray; -Pump Supply1
1G***27Spray Group-Water1
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087-0040 Spray Gp-Water
08***40Spray Group-Water1
11***17Gasket1
11***18Screen1
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6r-4072 Spray Gp-Water -High Pressure
00***70Nipple-Strainer To Flange6
03***01Hose As1
05***26Tee1
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122-8329 Spray Gp-Water
11***14Screen; (Water Tank)1
11***15Gasket1
12***29Spray Group-Water1
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6r-4071 Spray Gp-Water -Cutter
08***31Coupling2
2Y***08Hose Assem. 183 cm(72.05 In.)1
3B***73Nipple (.25 In. Diameter-4 In. Long)2
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114-2554 Strainer Gp-Water
08***12Coupling-Hose4
10***31Cover As1
11***54Strainer Group-Water1
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116-2001 Strainer Gp-Water
00***63Elbow, 90 Deg Street, 3/4in. N.P.T.1
07***13Valve-Control1
08***34Nipple; (3/4 Npt X 3/4 Hose)1
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082-0364 Tank Gp-Water
00***49Connector-Second Type1
00***43Elbow 5wd342 - Up Including 5wd329 - 335, 5wd337 - 3401
00***63Elbow, 90 Deg Street, 3/4in. N.P.T.2
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101-9455 Valve Gp-Flow Control
08***53Lamp; (24-Volt)(Remote Engine Stop)1
08***12Lens-Clear; (Hazard Warning Lights)1
10***55. Coller, Valve Group-Flow Control1
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1g-7060 Valve Gp-Manual
1G***60Valve Group-Manual1
1G***33Console As1
1V***32Handle2
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PR-450C serial number reference

Locate the PIN plate on the machine frame per the diagram in the operator's manual or PIN ID guide (exact mounting side is not documented for this specific model here - confirm at the machine or with a dealer). Read the first three characters as the machine-series prefix, then use the trailing digits as the build sequence within that series (for example 7PJ00001 is the first unit built in the 7PJ series).

PrefixIdentifies
7PJPR-450C Cold Planer, single production series (S/N 7PJ1-UP)

Frequently asked questions

What engine does the Caterpillar PR-450C use?

A Caterpillar 3408C, a mechanically governed V8 diesel with no electronic engine controls. It follows the 3408 used in the original PR-450 and the 3408B fitted partway through that production run; the base-platform gross rating is documented around 336 kW (450 hp), consistent with the machine's horsepower-class name.

What is the operating weight of the PR-450C?

Roughly 25.7-26.5 t (56,700-58,500 lb), varying with track configuration and installed options. The documented figure for the base PR-450 platform is 25,760 kg (56,791 lb) at full load; treat the PR-450C's exact weight as configuration-dependent.

What replaced the Caterpillar PR-450C?

No single model is documented as its direct successor. The PR-450C closed out Caterpillar's original PR-series cold planers before the lineup was reorganized under the PM naming scheme, so its replacement was a generational shift in the product line rather than a like-for-like model swap.

What PR-450C owners discuss

What powertrain does the PR-450C run, and what should an owner expect from it day to day?
The PR-450C is built around the Cat 3408 mechanical diesel V8 — a pre-electronic engine with a mechanical injection pump and governor, no ECM. Owners and mechanics who work on 3408-powered machines describe it as rugged and straightforward to wrench on compared to later HEUI/electronic cold planers, but timing and fuel-delivery adjustments are done mechanically (pump calibration, injector pop-testing) rather than with a laptop. Hydraulics off engine-driven pumps handle propel, steering, and drum height/leveling. The most commonly reported complaint tied to this engine family is hard starting and excess smoke in cold weather, usually traced to a worn injection pump or eroded injector nozzles rather than the engine itself being weak.
What track and undercarriage wear patterns are typical on this class of Cat cold planer?
The PR-450C rides on a three-track mechanical undercarriage with narrow rubber pads. Owners of this generation of Cat planer report track pad and drive-sprocket wear as the main recurring cost, accelerated by constant pivot/crab-steering around a mill cut and by milled aggregate packing into the tracks. A machine that pulls to one side mid-pass is commonly linked to uneven pad wear or a dragging track motor/brake, and operators say it's worth chasing immediately since it also skews cut depth, not just a cosmetic wear issue. Track tensioning on machines of this era typically uses a spring-and-grease cylinder under heavy preload — releasing tension incorrectly can eject components with enough force to injure. Have your dealer verify the correct tensioning procedure before servicing.
What are the known quirks of the Cat 3408 engine as installed in this generation of cold planer?
Mechanics working on the 3408 family commonly flag camshaft wear/pitting linked to marginal lubrication or a sticking lifter, and cylinder head cracking tied to age, overheating, or sustained vibration. A cooling-system quirk noted across 3408 applications is electrolysis-driven corrosion, addressed in the field by fitting sacrificial zinc anodes in the cooling circuit. Running modern low-sulfur diesel through an engine designed around the old fuel spec is also frequently cited as accelerating injector nozzle erosion over time, gradually increasing fuel delivery and showing up as smoking. None of this is unique to the PR-450C — it's the standard 3408 experience — but it applies directly since the PR-450C's confirmed powerplant is this same mechanical 3408/3408C.
What electrical or sensor issues come up on the PR-450C?
This is a mechanical, pre-electronic-engine platform, so there's no ECM or engine sensor network to fault-diagnose the way later cold planers have. Community discussion around machines of this vintage centers on the basics: charging-system wiring (alternator, regulator, starter circuit) and connectors corrode fastest on equipment that lives outside in dust and constant water-spray exposure, and the operator's main early-warning system is analog oil-pressure and coolant-temp gauges rather than any digital diagnostics. If a unit has been retrofitted with an aftermarket ultrasonic (sonic-ski style) grade-control sensor for automated cut-depth control, that add-on is reported elsewhere in the cold-planer world to be sensitive to wind, rain, and mounting position — treat it as a separate system from the base Cat machine when troubleshooting.
What should the cutter drum, bits, and conveyor be checked for on a used unit?
General cold-planer buyer guidance applies directly here: check remaining carbide on the cutting tools and look for uneven wear across the drum width, which points to a bent drum shaft or bad bearing rather than normal tool wear. Drum bearing seals are a known wear point industry-wide — a leaking seal lets milled material and water into the bearing and shortens its life fast, so grease condition and any play in the drum shaft are worth checking before buying. On the discharge conveyor, inspect belt condition and the side-seal strips that keep millings from spilling; these seals wear with use and are a common owner complaint across the cold-planer category generally, not specific to Cat.
What does the water spray/dust suppression system commonly need attention for?
Cold-planer water systems cool the cutting drum and knock down dust, and the recurring owner complaint across this equipment category is pump or nozzle clogging from debris in the supply water. Field advice is to draw from the tank above any sediment layer rather than off the bottom, and to service the pump's regulating/relief valve on the same interval as its seals rather than waiting for a failure. In freezing conditions, standing water left in the tank and lines is a common cause of cracked fittings — draining or treating the system before cold storage is standard practice.
What should a buyer check before purchasing a used PR-450C?
Because this is an older mechanical-engine platform with thin public documentation, lean on the machine's own service history rather than published benchmarks. Pull hours and service/rebuild records, and get an oil analysis on a high-hour unit to catch camshaft or bearing wear before it's visible. Walk the undercarriage for pad and sprocket wear and confirm the machine tracks straight with no pull. Check for engine and hydraulic leaks, verify the injection pump starts and idles cleanly cold (a slow, smoky cold start is the 3408's most common tell of a tired pump or injectors), inspect the cutter drum bearings and remaining tool carbide, and confirm the water spray system holds pressure without clogging. Confirm the PIN prefix and engine serial match what the seller represents, since this model ran a single documented production series. Have your dealer verify engine compression and injector condition with a proper pop-test before finalizing a purchase.

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

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