Caterpillarengine - machine(no series)

Caterpillar 3046

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 3046 is a factory-fit diesel engine rather than a standalone machine: a mechanically governed, direct-injection inline-six built on the Mitsubishi S6S block under a long-running Cat-Mitsubishi supply arrangement. Displacement is 5.0 liters (305 cu in). The naturally aspirated 3046 and the turbocharged 3046T together cover roughly 57 to 93 kW (77 to 125 hp), depending on rating and host machine. Cat fitted this engine family across the D3C, D4C, and D5C Series III and D3G, D4G, and D5G small track-type tractors, the 933, 933C, 939, and 939C Hystat track loaders, and the 315B, 315BL, 315C, 317B, and 318B mini and mid excavators, spanning roughly the early 1990s through the mid-2000s. Because it powers several unrelated chassis, there is no single operating weight for the 3046 itself; host machines range from small dozers around 7 tonnes up to mid-size excavators near 18 tonnes (15,000 to 40,000 lb). It succeeded the diesels used in the preceding B-series small dozers and mini excavators, and Cat later moved these product lines to its own electronically controlled diesels.

Across that production run the core mechanical architecture stayed fixed. Cat never moved this engine family to electronic fuel control, so every 3046 and 3046T runs a mechanical inline injection pump and governor with no ECM and no diagnostic fault codes. The main change from series to series was rating and aspiration: lighter Series III and early G-series dozers generally ran the naturally aspirated 3046, while the heavier D5C, the 939C loader, and the 315 through 318 excavator range used the turbocharged 3046T for more power from the same block. In the used-equipment and parts market that mechanical simplicity is the draw. These dozers, loaders, and excavators are old enough to be budget machines, the engine has no electronics to fail, and it shares major components and machining specs with the widely supported Mitsubishi S6S industrial engine, so parts sourcing is broader than the Cat part number alone suggests. Later dozers, loaders, and excavators in these size classes moved on to Cat's own electronically controlled diesels, which is why the 3046/3046T generation is now a legacy, parts-and-rebuild-market engine rather than a current Cat offering.

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 3046 specifications

Engine

Model / familyCat 3046 industrial diesel, base naturally aspirated rating plus turbocharged 3046T (turbo-aftercooled on most later ratings). Confirmed factory fitment across three generations: Series III small dozers (D3C, D3C XL, D3C LGP, D4C, D5C XL Hystat), G-series small dozers (D3G, D4G, D5G), Hystat track-type loaders (933, 933C, 939, 939C), and small hydraulic excavators (315B, 315C, 317B)
ConfigurationFour-stroke-cycle, water-cooled, inline 6-cylinder, cast-iron block, direct injection. Naturally aspirated on the base rating; 3046T rating adds a turbocharger, with air-to-air aftercooling on most turbocharged installations
Gross powerNaturally aspirated rating approx. 58 kW (78 hp) at 2400 rpm (D3C Series III). Turbocharged (3046T) rating range approx. 57-75 kW (77-100 hp) at 2400 rpm depending on host machine and generation — varies by configuration
Net powerNaturally aspirated rating approx. 52-53 kW (70-71 hp) at 2400 rpm (D3C Series III, 933 track loader). Turbocharged (3046T) rating range approx. 60-81 kW (80-109 hp) at 2400 rpm depending on host machine — D4G approx. 60 kW (80 hp), D5C XL III Hystat and 939C approx. 67 kW (90 hp), 315B approx. 74 kW (99 hp), 317B approx. 81 kW (109 hp). Varies by configuration/series
Governed/rated speed2400 rpm across published ratings, both naturally aspirated and turbocharged
Displacement5.0 L (305 in³ / 305.2 cu in)
Bore x stroke94 mm x 120 mm (3.70 in x 4.72 in); one source rounds stroke to 119 mm (4.70 in)
Compression ratioNot published on a single consistent factory sheet reviewed; secondary sources place it in the 17:1-19:1 range depending on naturally aspirated vs. turbocharged rating — treat as indicative only and verify against the nameplate
Emissions tierNo uniform emissions certification is published across this engine's production span; factory literature for the machines that carried it (Series III, G-series, Hystat loaders, B-series excavators) documents the power rating but not a formal EPA/EU tier figure common to the whole family

Weights

Net dry engine weightApprox. 757 kg (1670 lb); figure comes from a single source and is not independently cross-checked, treat as approximate
Operating weight / shipping weight / ground pressureNot applicable to the engine itself. This engine is installed across small dozers (roughly 7-10 tonnes operating weight), Hystat track-type loaders (roughly 8.5-9.5 tonnes), and small hydraulic excavators (roughly 15-17 tonnes), so no single chassis weight or ground-pressure figure applies

Dimensions

Engine block dimensionsNot consistently published in the factory literature reviewed
Transport length/width/height, wheelbase, track gauge, ground clearanceNot applicable to the engine alone. These are host-chassis figures that vary widely across the dozer, track-loader, and excavator platforms this engine powers

Performance

Governed speed rangeRated at 2400 rpm on all published ratings; low-idle/high-idle defaults not consistently published
Travel speed, gradeability, drawbar/dig/lift figuresNot applicable to the engine alone. Travel speed, gradeability, and drawbar or hydraulic performance are functions of the host machine's drivetrain and hydraulics, not the engine rating by itself

Service capacities (summary)

Engine oil (crankcase refill)Approx. 13.0-13.2 L (13.7-14 qt / 3.4-3.5 US gal); consistent across the installations checked (D3C Series III, 933C)
Cooling system (engine coolant)Approx. 20.8-21.2 L (5.5-5.6 US gal); consistent across the installations checked (D3C Series III, 933C, 939C)
Fuel tankNot applicable to the engine itself; tank size is set by the host chassis and varies widely, for example around 157 L (41.5 US gal) on the 933C/939C track loaders versus a smaller tank on the D3C-class dozers
Hydraulic systemNot applicable to the engine itself; hydraulic reservoir and circuit capacity are set by the host machine, not the engine

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

3046 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)About 13 L (13.7 qt / 3.4 US gal) on track-type tractor and small-excavator installs (D3C Series III, D4C Series III, 315B/317B with 3046/3046T). Track-loader installs (933C, 933C LGP) report a deeper sump near 21 L (22.2 qt / 5.6 US gal). Capacity varies by configuration/series and by which oil pan the host machine uses.Cat Diesel Engine Oil (Cat DEO). SAE 15W-40 for temperate-to-warm ambient temperatures; SAE 10W-30 for cold-weather starting and pumpability. Single-grade SAE 30 was also used on early mechanical builds in narrow temperature bands. Follow the host machine OMM for exact change interval, typically every 250 service hours.
Cooling systemAbout 19-21 L (20-22 qt / 5.0-5.5 US gal) on track-type tractor and excavator installs (D3C Series III near 20.9 L, 315B near 19.3 L). Track-loader installs (933C) report roughly 13 L (3.5 US gal). Varies by radiator/cooling package and configuration/series.Cat Diesel Engine Antifreeze/Coolant (Cat DEAC), a fully formulated concentrate mixed with clean, low-mineral (deionized or distilled) water. Standard 50% DEAC/50% water blend gives freeze protection to -37 degC (-34 degF); a richer 60/40 blend extends protection to -52 degC (-62 degF) for extreme cold. Never mix with untreated tap, well, or surface water. Check supplemental coolant additive concentration at every oil change; flush and refill the system every 3,000 hours or 3 years, whichever comes first.
Fuel tankNot covered in the engine's own literature. The 3046 is a factory-installed powerplant across several Cat machine families (dozers, excavators, track loaders); fuel tank size is set by the host chassis, not the engine documentation.No. 2-D diesel fuel under normal conditions; No. 1-D permitted for cold-weather starting. Refer to the host machine OMM for tank capacity and fuel grade notes by season.
Transmission / powertrainNot applicable at the engine level. Powertrain type (mechanical, hydrostatic, or torque-converter/power-shift) and its oil capacity depend entirely on the host machine (dozer, excavator, or track loader) and are set out in that machine's own OMM, not the 3046 engine documentation.Not applicable at the engine level; consult the host machine OMM for the correct transmission fluid (typically Cat TDTO-class oil in dozer and loader powertrains).
Final drives (each)Not applicable at the engine level. Final drive presence and capacity depend on the host machine (track-type tractors and track loaders have final drives; wheel-based machines and excavators do not use the same arrangement) and are documented in that machine's OMM.Not applicable at the engine level; host machine OMM specifies Cat TDTO-class gear oil where final drives are fitted.
Hydraulic system and tankNot applicable at the engine level. Hydraulic system and tank capacity belong to the host machine (implement/steering hydraulics on a dozer, or the full hydraulic circuit on an excavator or hydrostatic loader) and are not part of the engine's own fluid chart.Not applicable at the engine level; host machine OMM specifies the hydraulic oil, commonly Cat DEO (shared with engine oil on some dozer implement circuits) or a dedicated Cat hydraulic oil depending on the machine.
Axles / differentialsNot applicable. Machines built around the 3046 (track-type tractors, track loaders, excavators) use final drives and swing/travel drives rather than axle differentials in the wheeled-machine sense.Not applicable.
Grease (spec only)Not documented as a fill capacity; grease points (idler and accessory-drive pivots, linkages) are chassis items covered by the host machine OMM rather than the engine's own literature.Where grease points exist on the installation, Cat Multipurpose Grease (Cat MPGM), NLGI Grade 2, is the standard factory recommendation; low-temperature Cat Arctic Platinum-type grease for sub-zero climates per host machine OMM.

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

Caterpillar 3046 maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and coolant level before starting the engine.
  • Drain water and sediment from the primary fuel filter/water separator.
  • Walk around and check for fuel, oil, and coolant leaks at the engine and turbocharger (3046T).
  • Clear debris from the radiator core and guard so airflow is not restricted.
  • Check battery terminals, electrolyte, and charge weekly.
  • Listen for injector knock or unusual exhaust smoke that signals fuel system trouble.
Every 250 h
  • Change engine oil and replace the engine oil filter.
  • Pull an S·O·S oil sample for wear-metal trend before draining.
  • Check alternator and fan belt tension and condition.
  • Inspect the crankcase breather and valve cover gasket for oil seepage.
  • Grease the host machine's pivot and linkage points per its lubrication chart.
Every 500 h
  • Replace the secondary, engine-mounted fuel filter.
  • Drain and inspect the fuel tank sediment bowl.
  • Check turbocharger shaft play and boost hose clamps on the 3046T.
  • Inspect the fan belt, water pump, and alternator drive for glazing or cracking.
  • Check final drive or track/undercarriage oil level on the host machine.
Every 1,000 h
  • Check and adjust intake and exhaust valve lash to 0.25 mm (0.010 in) cold clearance.
  • Inspect and torque engine and bell-housing mounting bolts.
  • Test cranking and charging output and clean starter and alternator connections.
  • Check the mechanical inline injection pump linkage and governor rack for free movement.
  • Inspect turbocharger wastegate and boost lines and clamps on the 3046T.
Every 2,000 h
  • Sample coolant (S·O·S Level 1 or 2) and check SCA or glycol concentration.
  • Inspect water pump, hoses, and radiator mounts for cracking or seepage.
  • Clean and pressure-test the cooling system and replace the thermostat if due.
  • Inspect fuel injection lines and injector tips for leakage or carbon buildup.
  • Check the crankshaft vibration damper and engine mounts for cracking or softening.
Every 4,000 h
  • Send injectors out for pop-pressure test and recalibration at a diesel fuel injection shop.
  • Replace conventional coolant/antifreeze if not on extended-life coolant, per S·O·S results.
  • Inspect and reseat the cylinder head if compression trends are declining.
  • Check camshaft followers and the rocker assembly for wear.
Every 10,000 h
  • Plan for a top-end or inframe overhaul of pistons, liners, rings, and bearings, typically in the 8,000 to 12,000 hour range depending on load factor and duty cycle; confirm timing against S·O·S trend data rather than the hour figure alone.
  • Inspect the turbocharger core on 3046T units for shaft play and rebuild or replace as needed.
  • Check the cylinder head for valve seat recession and warpage before returning to service.
  • Evaluate the mechanical injection pump for a full rebuild or exchange.

Servicing the 3046 beyond the schedule

Predictive Maintenance & Fluid Analysis

The 3046's mechanical injection pump and governor throw no fault codes, so S·O·S oil and coolant sampling is the real early-warning system, not a dash light. Pull an oil sample at every 250-hour change to track fuel dilution from injection pump seal wear and metal from the shared S6S liner and ring set. On the turbocharged 3046T, watch coolant glycol and SCA levels closely since sustained boost runs the block hotter. On tracked host machines, pair engine oil sampling with a final-drive and undercarriage wear check.

Corrective & Common Repairs

Most 3046 complaints trace to the mechanical fuel system: leaking injector tips cause hard starting, rough idle, and black smoke, and are a common bench-test-and-reseal job on both the naturally aspirated 3046 and the 3046T. Turbocharged units are prone to shaft play and boost-hose clamp failures that show up as power loss under load. Water pump seals weep after extended service and are a routine seal-and-bearing kit repair. On dozer and loader applications, check the exhaust manifold and turbo mounting studs for cracking from repeated heat-cycling.

Overhaul & Rebuild Points

A 3046 top-end job centers on the cylinder head, valve seats, and the injector sleeves, since seat recession and sleeve leakage are the usual reasons compression falls off on this block. Liner and ring wear follow the same wear pattern as the Mitsubishi S6S it's built from, so liner kits and ring sets are readily available even where a Cat part number is scarce. The mechanical injection pump needs bench calibration, not software flashing, at rebuild time. On the 3046T, budget for a turbocharger core rebuild alongside the inframe work.

Seasonal & Environment Servicing

Cold-climate starts are the biggest seasonal risk on a mechanically governed engine with no electronic cold-start strategy: use ether or a glow-plug or grid-heater aid where fitted, and keep winter-blend fuel ahead of the inline pump to avoid gelling and pump-seizure risk. In hot, dusty dozer and loader work, service the air filter and the 3046T's turbo cooling more often than the standard interval, since airborne grit is what actually shortens ring and liner life on this block. Regrease undercarriage and linkage points weekly in mud or sand.

3046 common service parts

Part numberPart
118-5768Filter Element-FuelCheck fitment →
102-8119Name-Plate (Lubrication And Filter Maintenance Interval), Roller Ar-Track & CarrierCheck fitment →

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

3046 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
Oil Pressure Warning Lamp (red)Engine oil pressure has fallen below the safe minimum monitored by the block-mounted pressure switch.Low oil level, worn or failing oil pump, plugged suction screen, or a faulty pressure switch.Stop the engine at once, check oil level and condition, then check the switch and wiring before restarting.
Coolant Temperature Warning Lamp (red)Coolant temperature has risen above the safe operating limit sensed by the temperature switch.Low coolant level, blocked radiator core, slipping or broken fan belt, or thermostat stuck closed.Idle the engine down, then shut it off and let it cool before checking coolant level, belt, and radiator for blockage.
Charging System Warning LampThe alternator is not producing adequate charging current for the battery and electrical system.Broken or slipping alternator belt, worn brushes, failed alternator, or a loose/corroded wiring connection.Check belt tension and condition first, then test alternator output and battery connections.
Coolant Temperature Gauge - High/Red Zone ReadingThe analog coolant temperature gauge needle enters the red zone, indicating an overheat condition.Same as the coolant warning lamp: low coolant, airflow restriction at the radiator/oil cooler, or cooling fan drive fault.Reduce load, monitor the gauge, and shut down before the lamp illuminates if the needle stays in the red zone.
Air Filter Restriction Indicator (yellow, if equipped)Intake air restriction across the air cleaner element has reached the service limit.Dirty or clogged primary air filter element, or a collapsed intake hose.Service or replace the air filter element and reset the restriction indicator.

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

3046 attachments & work tools

Straight (S-type) dozer blade

Blades sized for this class run roughly 1.3 to 1.7 cu m (1.7 to 2.2 cu yd) capacity and about 2.5 to 2.9 m (8.2 to 9.5 ft) wide, varying by model and by Standard/LGP/XL frame. The moldboard pins to a C-frame trunnion mount rather than a universal quick coupler.

Power-angle-tilt (PAT/VPAT) blade

6-way PAT, later upgraded to VPAT with box-section reinforcement and an adjustable top pitch link, adds hydraulic angle and tilt through dual cylinders run from a single in-cab joystick. Dig depth runs about 450 to 490 mm (18 to 19 in) and lift height about 790 to 840 mm (31 to 33 in), the exact figures varying by series and configuration.

Multi-shank ripper

Rear parallelogram ripper offered with multiple shank positions (typically 3 to 5) for varied ground conditions, mounted on a hydraulically actuated rear linkage shared across this small-dozer family. Shanks and tips are wear items and are not interchangeable with unrelated dozer classes.

Single-shank ripper

Single-shank variant trades flexibility for maximum penetration force, used for hard, frozen, or rocky ground and for sustained production ripping. Uses the same rear hydraulic mount as the multi-shank ripper.

Compact track-loader bucket

The same engine family also powers a compact track-loader line in this size class, offered with general-purpose and multipurpose buckets around 1.05 to 1.1 cu m (1.4 cu yd). Buckets pin-mount to solid-plate lift arms rather than a quick-attach coupler.

Guarding, screens and sweeps

Optional guard package covers the radiator, fuel tank, lift cylinders, final drives and crankcase, plus cab overhead sweeps and rear/side screens for brush, forestry, or quarry duty. Sold and fitted as a bolt-on kit, not standard on the base machine.

Cable control winch

Rear-mounted cable control winch is a factory or dealer-fit option for self-retrieval and log-skidding work, taking the place of or supplementing the rear ripper mount depending on configuration.

Undercarriage/frame configuration

Available in Standard, LGP (low ground pressure, wider shoes and frame) and XL (extended track-on-ground) configurations. Frame choice sets which blade width and ripper reach fit the machine and is a factory build option rather than a bolt-on work tool.

Drivetrain configuration

Offered with a dual-path hydrostatic (Hystat) drive using single-lever joystick steering, or a mechanical/powershift drivetrain with conventional steering clutches and brakes. This is a factory driveline option that affects control layout but not work-tool fitment.

All 3046 assemblies by section

Every catalogued assembly group for the Caterpillar 3046. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
1318975 Air Cleaner Gp
1318974 Air Cleaner Gp
1275924 Cover Gp-Turbocharger
12***24Cover Group-Turbocharger; (Turbocharger)1
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7y1583 Extension Gp-Exhaust
1318971 Lines Gp-Air
1023837 Lines Gp-Drain
1068270 Manifold Gp-Exhaust
10***70Manifold Group-Exhaust; (Exhaust)1
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1515284 Manifold Gp-Inlet
5i8151 Muffler Gp
1166709 Turbocharger Gp
Basic Engine
1169987 Flywheel Gp
1515279 Cover Gp-Valve Mechanism
15***79Cover Group-Valve Mechanism; (Valve Mechanism)1
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1169988 Camshaft Gp
1073675 Cylinder Block As
1068230 Cylinder Block Gp
1515305 Cylinder Gp-Head
1166715 Flywheel Gp
1166710 Gear Gp-Front
1166718 Housing Gp-Flywheel
11***18Housing Group-Flywheel; (Flywheel)1
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1166713 Housing Gp-Front
1068236 Lifting Gp-Engine
1318976 Mounting Gp-Engine
1515318 Pan Gp-Oil
1283296 Piston & Rod Gp
1068232 Piston & Rod Gp
1477015 Pulley Gp
1166711 Pulley Gp-Crankshaft
11***11Pulley Group-Crankshaft; (Crankshaft)1
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1166712 Pulley Gp
1068238 Valve Mechanism Gp
Cooling System
1068262 Cooler Gp-Engine Oil
10***62Cooler Group-Engine Oil; (Engine Oil)1
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5i8150 Fan Gp-Suction
1166725 Lines Gp-Water
11***25Lines Group-Water; -Water Temperature Regulator1
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1166724 Pump Gp-Water
1318972 Radiator & Hyd Oil Cooler Gp
13***72Radiator & Hydraulic Oil Cooler Group1
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1318973 Radiator & Hyd Oil Cooler Gp
13***73Radiator & Hydraulic Oil Cooler Group1
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1859008 Radiator & Hyd Oil Cooler Gp
18***08Radiator & Hydraulic Oil Cooler Group1
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1859006 Radiator & Hyd Oil Cooler Gp
18***06Radiator & Hydraulic Oil Cooler Group1
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1477106 Radiator & Hyd Oil Cooler Gp
14***06Radiator & Hydraulic Oil Cooler Group1
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Electrical And Starting System
3e7738 Alarm As-Backup
1114696 Alarm Gp-Travel
5i8085 Alternator Gp-Charging
1166730 Alternator Gp-Charging
11***30Alternator Group-Charging; (Charging)1
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1709488 Battery & Wiring Gp-Part 3 Of 3
1321888 Battery & Wiring Gp -Part 3 Of 3
1321888 Battery & Wiring Gp -Part 1 Of 3
1321888 Battery & Wiring Gp -Part 2 Of 3
1709488 Battery & Wiring Gp-Part 1 Of 3
1709488 Battery & Wiring Gp -Part 2 Of 3
1321891 Battery & Wiring Gp-Cold Weath
13***91Battery & Wiring Group; -Cold Weather1
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1160080 Cable As
1343275 Cable As
1343274 Cable As
1363996 Cable As
1059917 Cable As
1327792 Control & Mtg Gp-Electronic
1712595 Control Gp-Electronic
17***95Control Group-Electronic; (Electronic)1
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1385190 Control Gp-Electronic
13***90Control Group-Engine Electronic; -Engine Shutdown1
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1706874 Panel Gp-Electronic
1160136 Converter Gp-Electrical
1507021 Converter Gp-Electrical
1347022 Cover Gp-Starting Motor
13***22Cover Group-Starting Motor; (Starting Motor)1
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1166728 Plug Gp-Glow
1709426 Harness As -Part 1 Of 3
1532490 Harness As -Part 1 Of 2
1532476 Harness As -Part 1 Of 3
1532476 Harness As -Part 2 Of 3
1709426 Harness As -Part 2 Of 3
1495027 Harness As
14***27Harness As, Ring; Piston Guide Ring1
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1495029 Harness As
14***29Harness As1
15***89Harness As1
15***90Harness As1
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1385127 Harness As
1507023 Harness As
1532489 Harness As -Part 1 Of 2
1532490 Harness As -Part 2 Of 2
1160243 Harness As
1495040 Harness As -Part 1 Of 3
1532477 Harness As -Part 1 Of 3
1495040 Harness As -Part 2 Of 3
1532489 Harness As -Part 2 Of 2
1343298 Harness As
1495029 Harness As -Part 1 Of 2
1673498 Harness As
1532476 Harness As -Part 3 Of 3
1507024 Harness As
1507013 Harness As -Part 1 Of 3
5q3056 Harness As
1495039 Harness As -Part 2 Of 3
5q3058 Harness As
1709426 Harness As -Part 3 Of 3
1933534 Harness As
1532477 Harness As -Part 2 Of 3
1495036 Harness As
1532535 Harness As
1160258 Harness As
11***58Harness As1
11***59Harness As1
11***60Harness As1
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5q3057 Harness As
1507013 Harness As -Part 3 Of 3
1160260 Harness As
1532477 Harness As -Part 3 Of 3
1160259 Harness As
1507022 Harness As
15***22Harness As1
15***23Harness As1
15***24Harness As1
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1495029 Harness As -Part 2 Of 2
1495039 Harness As -Part 1 Of 3
1495039 Harness As -Part 3 Of 3
1507013 Harness As -Part 2 Of 3
1532454 Harness As-Console
1114843 Harness As-Console
1532494 Harness As-Console -Part 2 Of 2
107014 Harness As-Console
15***14Harness As-Console1
15***93Harness As-Console; (Console)1
15***94Harness As-Console; (Console)1
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1532494 Harness As-Console -Part 1 Of 2
1114842 Harness As-Console
1532493 Harness As-Console -Part 2 Of 2
1532493 Harness As-Console -Part 1 Of 2
1114841 Harness As-Console
11***41Harness As-Console1
11***42Harness As-Console; (Console)1
11***43Harness As-Console; (Console)1
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1506992 Harness As-Wiring
15***92Harness As-Wiring1
15***93Harness As-Wiring; (Wiring)1
15***94Harness As-Wiring; (Wiring)1
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1532556 Harness As-Wiring
1506989 Harness As-Wiring
15***89Harness As-Wiring1
15***90Harness As-Wiring; (Wiring)1
15***91Harness As-Wiring; (Wiring)1
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1506990 Harness As-Wiring
1706946 Harness As-Wiring
1673451 Harness As-Wiring
1532555 Harness As-Wiring
15***55Harness As-Wiring1
15***56Harness As-Wiring; (Wiring)1
15***57Harness As-Wiring; (Wiring)1
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1506994 Harness As-Wiring
1114796 Harness As-Wiring
1114795 Harness As-Wiring
1506993 Harness As-Wiring
1506991 Harness As-Wiring
1532557 Harness As-Wiring
5i8159 Instrument Gp
1532523 Lamp Gp-Flood
15***23Lamp Group-Flood; -Horizontal Rh1
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1532452 Lamp Gp-Flood
1114813 Lamp Gp-Flood
1532521 Lamp Gp-Flood
15***21Lamp Group-Flood; -Chassis, Boom-Boom, Rear1
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5i8250 Lamp Gp-Flood
15***78Lamp Group-Flood1
15***52Lamp Group-Flood1
5I***50Lamp Group-Flood; -Boom1
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1506978 Lamp Gp-Flood
5i8251 Lamp Gp-Flood
1400919 Lighting Gp-Boom
1321890 Lighting Gp-Boom
1114694 Lighting Gp-Cab
7y8189 Lighting Gp-Cab
4i5409 Lighting Gp-Chassis
4I***09Lighting Group-Chassis; -Front, Rh1
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1495035 Panel Gp-Circuit Breaker
1706875 Panel Gp-Circuit Breaker
1532495 Panel Gp-Circuit Breaker
1507030 Speaker Gp-Radio
1417818 Starting Motor Gp-Electric
12***19Starting Motor Group-Electric; (Electric)1
14***18Starting Motor Group-Electric; (Electric)1
2Y***29Nut-Hard; (M10 X 1.5)2
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1275819 Starting Motor Gp-Electric
12***19Starting Motor Group-Electric; (Electric)1
13***22Cover Group-Starting Motor; (Starting Motor)1
13***23Starting Motor Group-Electric; (Electric)1
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1347023 Starting Motor Gp-Electric
13***23Starting Motor Group-Electric; (Electric)1
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1114799 Switch As
11***99Switch As; (Hydraulic Lockout, Neutral Start)1
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7n0718 Switch As-Disconnect
7N***18Switch As-Disconnect; -Battery-Ground Level1
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1752313 Switch As-Magnetic
1752314 Switch As-Magnetic
1140421 Switch As-Toggle
11***21Switch As-Toggle; (Counterweight Removal)1
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1107884 Switch As-Toggle
11***84Switch As-Toggle; (Momentary)(Manual Engine Speed Control)1
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7n0719 Switch As-Disconnect
7N***19Switch Group-Disconnect; -Battery1
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1251302 Switch As-Magnetic
12***02Switch Group-Magnetic; -Starting Motor, Start Relay1
17***13Switch As-Magnetic; (Magnetic)1
17***14Switch As; (Magnetic)1
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1060107 Switch As-Rotary
10***07Switch Group-Rotary; -Autodig Material Select-Throttle Position1
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9g7641 Switch Gp-Rotary
9G***41Switch Group-Start; -Engine, Key-Vims Service1
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1114870 Timer As
5q3059 Wiring Gp
1673450 Wiring Gp
1160159 Wiring Gp
1060054 Wiring Gp-Cab
1495026 Wiring Gp-Console
14***26Wiring Group-Console; (Console), Scraper Ring; Piston Seal1
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1495028 Wiring Gp-Console
14***28Wiring Group-Console; (Console)1
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1431625 Wiring Gp-Console
14***25Wiring Group-Console1
14***26Wiring Group-Console; (Console), Scraper Ring; Piston Seal1
14***28Wiring Group-Console; (Console)1
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1400865 Wiring Gp-Console
14***65Wiring Group-Console; (Console)1
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1160094 Wiring Gp-Radio
1400867 Wiring Gp-Console
1507025 Wiring Gp-Radio
1114695 Wiring Gp-Lower Wiper
Engine Arrangement
1318980 Engine Ar
12***24Cover Group-Turbocharger; (Turbocharger)1
13***80Engine Ar1
14***07Engine Ar1
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1698143 Engine Ar
12***24Cover Group-Turbocharger; (Turbocharger)1
16***43Engine Ar1
18***83Engine Ar1
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1318979 Engine Ar
12***24Cover Group-Turbocharger; (Turbocharger)1
13***79Engine Ar1
14***08Engine Ar1
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1494607 Engine Ar -Part 1 Of 2
10***38Valve Mechanism Group1
10***30Cylinder Block Group1
10***32Piston & Rod Group1
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1862583 Engine Ar -Part 3 Of 3
10***31Kit-Gasket; (Top)1
10***32Kit-Gasket; (Bottom)1
11***28Glow Plug Group; (Glow)1
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1494607 Engine Ar -Part 2 Of 2
10***62Cooler Group-Engine Oil; (Engine Oil)1
10***68Lines Group-Fuel Injection; (Fuel Injection)1
10***70Manifold Group-Exhaust; (Exhaust)1
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1494608 Engine Ar -Part 1 Of 2
10***38Valve Mechanism Group1
10***30Cylinder Block Group1
10***32Piston & Rod Group1
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1704053 Engine Ar -Part 1 Of 3
10***30Cylinder Block Group1
10***32Piston & Rod Group1
10***36Lifting Group-Engine; (Engine)1
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1862583 Engine Ar -Part 1 Of 3
10***30Cylinder Block Group1
10***32Piston & Rod Group1
10***36Lifting Group-Engine; (Engine)1
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1704053 Engine Ar -Part 3 Of 3
10***31Kit-Gasket; (Top)1
10***32Kit-Gasket; (Bottom)1
11***28Glow Plug Group; (Glow)1
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1626270 Engine Ar
12***24Cover Group-Turbocharger; (Turbocharger)1
16***70Engine Ar1
17***53Engine Ar1
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1494608 Engine Ar -Part 2 Of 2
10***70Manifold Group; (Exhaust)1
10***62Cooler Group-Engine Oil; (Engine Oil)1
10***68Lines Group-Fuel Injection; (Fuel Injection)1
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1626269 Engine Ar
16***69Engine Ar1
16***70Engine Ar1
16***50Wiring Group1
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1862583 Engine Ar -Part 2 Of 3
10***62Cooler Group-Engine Oil; (Engine Oil)1
10***68Lines Group-Fuel Injection; (Fuel Injection)1
10***70Manifold Group-Exhaust; (Exhaust)1
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1704053 Engine Ar -Part 2 Of 3
10***62Cooler Group-Engine Oil; (Engine Oil)1
10***68Lines Group-Fuel Injection; (Fuel Injection)1
10***70Manifold Group-Exhaust; (Exhaust)1
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Frame And Body
1219101 Box & Mtg Gp-Storage
1466973 Box & Mtg Gp-Storage
1351294 Box & Mtg Gp-Storage
13***94Box & Mtg Group-Tool; (Storage)1
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1466974 Box Gp-Storage
1219102 Box Gp-Storage
1540653 Box Gp-Storage
1483295 Bumper Gp-Side
1324051 Cooling Ar
13***51Cooling Ar1
14***34Door Group-Access1
14***05Pulley Group1
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1219138 Counterweight Gp
1219139 Counterweight Gp
1351348 Door Gp-Hood
1449234 Door Gp-Hood
1351343 Door Gp-Hood
1466970 Fender & Cover Gp
1332527 Frame As-Undercarriage
5q4845 Frame As-Upper
1372797 Frame Gp-Undercarriage
1304385 Frame Gp-Upper
1484568 Gear & Bearing Gp
1026435 Gear & Bearing Gp
1392988 Guard Ar-Bottom
13***88Guard Ar-Bottom1
14***42Guard Group-Swivel; (Swivel)1
14***80Guard Group-Bottom; (Bottom)1
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1449360 Guard Gp-Bottom
1219140 Guard Gp-Bottom
1449380 Guard Gp-Bottom
1413542 Guard Gp-Swivel
1066774 Guard Gp-Track Guide
1066775 Guard Gp-Track Guide
10***75Guard Group-Track Guide; -Front1
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0875908 Guard Gp-Track Guide
08***08Guard Group-Track Guide; -Center1
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1066773 Guard Gp-Track Guide
10***73Guard Group-Track Guide; -Sprocket1
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1066772 Guard Gp-Track Guide
10***72Guard Group-Track Guide; -Sprocket1
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1332819 Guard Gp-Travel Motor
1449231 Handhold Gp
1449230 Handhold Gp
1449223 Hood & Guard Gp -Part 3 Of 3
1449223 Hood & Guard Gp -Part 1 Of 3
1449223 Hood & Guard Gp-Part 3 Of 3
1449223 Hood & Guard Gp-Part 2 Of 3
1449223 Hood & Guard Gp-Part 1 Of 3
1449223 Hood & Guard Gp -Part 2 Of 3
1420949 Hood Gp-Engine
1132907 Idler Gp-Front
1309331 Idler Gp-Front
1309333 Idler Gp-Front
1309330 Idler Gp-Front
1792987 Link As-Track
1941134 Link As-Track
1941133 Link As-Track
1792986 Link As-Track
1028129 Link As-Track
1028124 Link As-Track
1324183 Mounting Gp-Grease Gun
13***83Mounting Group-Grease Gun; (Grease Gun)1
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1028119 Roller Ar-Track & Carrier
10***19Name-Plate (Lubrication And Filter Maintenance Interval), Roller Ar-Track & Carrier1
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1028120 Roller Ar-Track & Carrier
1175045 Roller Gp-Track-Single Flange
8e5600 Roller Gp-Track Carrier
8E***00Roller Group-Track Carrier; (Track Carrier)1
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1614143 Roller Gp-Track-Single Flange
16***43Roller Group-Track-Single Flange; (Track) (Single Flange)1
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1557082 Box Gp-Storage
1557081 Box & Mtg Gp-Storage
1362367 Track Adjuster & Recoil Gp
1362368 Track Adjuster & Recoil Gp
1309332 Track Adjuster & Recoil Gp
1309334 Track Adjuster & Recoil Gp
1764851 Track Gp
12***61Shoe-Track; (500mm Wide)41
17***51Track Group1
19***33Link As-Track; (Track)1
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1793025 Track Gp
12***62Shoe; (Track)41
17***86Link As-Track; (Track)1
17***25Track Group1
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1793028 Track Gp
12***63Shoe-Track44
17***28Track Group; -2-Required1
19***34Link As-Track; (Track)1
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1793026 Track Gp
12***63Shoe-Track41
17***26Track Group1
19***33Link As-Track; (Track)1
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1028125 Track Gp
10***25Track Group1
10***29Link As-Track; (Track)1
12***61Shoe-Track; (500mm Wide)44
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1793027 Track Gp
12***61Shoe-Track; (500mm Wide)44
17***27Track Group; -2-Required1
19***34Link As-Track; (Track)1
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1028121 Track Gp
10***21Track Group1
10***24Link As-Track; (Track)1
12***61Shoe-Track; (500mm Wide)41
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1028127 Track Gp
10***27Track Group1
10***29Link As-Track; (Track)1
12***63Shoe-Track44
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1028123 Track Gp
10***24Link As; (Track)1
10***23Track Group1
12***63Shoe-Track41
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1028122 Track Gp
10***24Link As; (Track)1
10***22Track Group1
12***62Shoe; (Track)41
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1764852 Track Gp
12***62Shoe; (Track)44
17***52Track Group; -2-Required1
17***87Link As-Track; (Track)1
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1028126 Track Gp
10***26Track Group1
10***29Link As-Track; (Track)1
12***62Shoe; (Track)44
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1704851 Track Gp
12***61Shoe-Track; (500mm Wide)41
17***51Track Group1
17***86Link As-Track; (Track)1
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Fuel System
1327794 Control Gp-Governor
1515573 Filter Gp-Fuel
1376384 Governor As-Fuel Injection
1624176 Governor As-Fuel Injection -Part 1 Of 5
11***37Housing As1
11***39Cover1
11***40Pin1
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1624176 Governor As-Fuel Injection -Part 4 Of 5
11***18Support-Lever1
11***19Plate1
11***20Spring1
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1624176 Governor As-Fuel Injection -Part 3 Of 5
11***91Bolt2
11***92Seal1
11***93Lever1
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1624176 Governor As-Fuel Injection -Part 2 Of 5
11***57Key-Woodruff1
11***58Flyweight As1
11***59Washer1
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1624176 Governor As-Fuel Injection-Part 5 Of 5
11***76Adapter1
11***78Adapter1
11***79Ring1
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1351292 Lines Gp-Fuel
1351291 Lines Gp-Fuel
1449354 Lines Gp-Fuel
1515563 Lines Gp-Fuel Filter
15***63Lines Group-Fuel Filter; (Fuel Filter)1
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1515583 Lines Gp-Fuel Injection
15***83Lines Group-Fuel Injection; (Fuel Injection)1
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1073650 Lines Gp-Fuel Injection
1515581 Lines Gp-Fuel Injection
1068268 Lines Gp-Fuel Injection
10***68Lines Group-Fuel Injection; (Fuel Injection)1
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1624178 Pump As-Fuel Injection-Part 1 Of 4
09***33Bolt, Eye1
11***41Stud3
11***44Spring1
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1179170 Pump As-Fuel Injection
11***70Pump As-Fuel Injection1
11***86Pump Group-Fuel Tfr & Priming; (Fuel Transfer & Prim)1
11***11Nut1
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1624178 Pump As-Fuel Injection -Part 4 Of 4
09***40Washer4
11***42Valve6
11***43Valve6
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1624178 Pump As-Fuel Injection-Part 2 Of 4
11***51Seat6
11***53Seat6
11***54Housing As6
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1624178 Pump As-Fuel Injection -Part 3 Of 4
11***63Shim-Shaft; (0.1-mm Thk)(0.1mm-Thk)3
11***64Shim-Shaft; (0.12-mm Thk)(0.12m-Thk)3
11***65Shim-Shaft; (0.14-mm Thk)(0.14mm-Thk)3
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1515579 Pump Gp-Fuel Injection
15***79Pump Group-Fuel Injection; (Fuel Injection)1
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1515580 Pump Gp-Fuel Injection
15***80Pump Group-Fuel Injection; (Fuel Injection)1
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1376383 Pump As-Fuel Injection
1166708 Pump Gp-Fuel Injection
11***08Pump Group-Fuel Injection; (Fuel Injection)1
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1179186 Pump Gp-Fuel Transfer & Prim
11***86Pump Group-Fuel Tfr & Priming; (Fuel Transfer & Prim)1
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1376387 Pump As-Fuel Transfer -Part 1 Of 4
09***00Bolt (20mm Long)4
09***06Bearing1
09***07Bearing1
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1376387 Pump As-Fuel Transfer -Part 3 Of 4
11***63Shim-Shaft; (0.1-mm Thk)(0.1mm-Thk)3
11***64Shim-Shaft; (0.12-mm Thk)(0.12m-Thk)3
11***65Shim-Shaft; (0.14-mm Thk)(0.14mm-Thk)3
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1376387 Pump As-Fuel Transfer -Part 2 Of 4
08***07Seat, Lower6
08***09Shim (1.0mm Thick)3
08***10Shim (1.5mm Thick)3
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1376387 Pump As-Fuel Transfer -Part 4 Of 4
09***30Spring6
09***34Tappet Assembly.6
09***75Washer2
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1351289 Tank & Mtg Gp-Fuel
1449355 Tank & Mtg Gp-Fuel
1351301 Tank Ar-Additional
12***35Tank Group-Fuel1
12***01Box & Mounting Group1
13***01Tank Ar-Fuel1
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1219035 Tank Gp-Fuel
1449356 Tank Gp-Fuel
1351290 Tank Gp-Fuel
Hydraulic System
4i1536 Accumulator Gp
4I***36Accumulator Group-Hydraulic; -Charged-Pilot Oil1
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5i8416 Accumulator Gp
5I***16Accumulator Group-Hydraulic; -Charged-Pilot Oil1
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0874456 Accumulator Gp
08***56Accumulator Group-Hydraulic; -Charged-Pilot Oil1
4I***36Accumulator Group-Hydraulic; -Charged-Pilot Oil1
5I***16Accumulator Group-Hydraulic; -Charged-Pilot Oil1
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0874454 Accumulator Gp
08***54Accumulator Group-Hydraulic; -Charged-Pilot Oil1
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4i6188 Valve As-Ball
4I***88Ball Valve Assembly; (Counterweight)1
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1733503 Block Gp-Hydraulic
17***03Base Group-Oil Filter; -Hydraulic1
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5q2112 Control Ar-Auxiliary
5Q***59Wiring Group1
5Q***12Control Ar-Auxiliary1
5Q***40Lines Group-Pilot; (Pilot)1
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1321762 Control Ar-Auxiliary
11***28Control Group-Hydraulic Pedal; -Auxiliary1
13***69Lines Group-Front; (Front)1
13***70Lines Group-Pilot; (Pilot)1
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1321761 Control Ar-Auxiliary
11***28Control Group-Hydraulic Pedal; -Auxiliary1
13***67Lines Group-Front; (Front)1
13***68Lines Group-Pilot; (Pilot)1
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1321763 Control Ar-Auxiliary
11***28Control Group-Hydraulic Pedal; -Auxiliary1
13***71Lines Group-Front; (Front)1
13***72Lines Group-Pilot; (Pilot)1
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1540569 Control Gp-Pilot Operated Hyd
1337899 Control Gp-Pilot Operated Hyd
13***99Control Group-Handle; -Lh Joystick1
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1337900 Control Gp-Pilot Operated Hyd
13***00Control Group-Handle; -Rh Joystick1
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1116428 Control Gp-Hydraulic
11***28Control Group-Hydraulic Pedal; -Auxiliary1
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1764986 Valve Gp-Pilot
17***86Control Group-Joystick; -Lh-Stick & Swing1
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1764985 Valve Gp-Pilot
17***85Control Group-Joystick; -Rh-Boom & Work Tool1
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1426579 Control Gp-Pilot Operated Hyd
11***32Pin1
14***79Control Group-Pilot Operated Hydraulic; (Pilot Operated Hydraulic)1
14***81Knob As1
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1116284 Control Gp-Pilot Operated Hyd
11***84Control Group-Pilot Operated Hydraulic1
15***68Control Group-Travel1
15***69Control Group-Handle1
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1426580 Control Gp-Pilot Operated Hyd
11***32Pin1
14***80Control Group-Pilot Operated Hydraulic; (Pilot Operated Hydraulic)1
14***81Knob As1
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1023829 Coupling Gp-Pump
1336628 Cylinder & Lines Gp-Boom
13***76Lines Group-Boom Cylinder; (Boom Cylinder)1
13***28Cylinder & Lines Group-Boom; (Boom)1
15***50Cylinder & Seal Group-Boom; (Boom)1
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1336627 Cylinder & Lines Gp-Boom
13***75Lines Group-Boom Cylinder; (Boom Cylinder)1
13***27Cylinder & Lines Group-Boom; (Boom)1
15***50Cylinder & Seal Group-Boom; (Boom)1
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1336634 Cylinder & Lines Gp-Bucket
13***78Lines Group-Bucket Cylinder; (Bucket Cylinder)1
13***34Cylinder & Lines Group-Bucket; (Bucket)1
15***54Cylinder & Seal Group-Bucket; (Bucket)1
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1336631 Cylinder & Lines Gp-Stick
13***77Lines Group-Stick Cylinder; (Stick Cylinder)1
13***31Cylinder & Lines Group-Stick; (Stick)1
15***52Cylinder & Seal Group-Stick; (Stick)1
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1559250 Cylinder & Seal Gp Boom
15***50Cylinder & Seal Group-Boom; (Boom)1
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1559254 Cylinder & Seal Gp-Bucket
15***54Cylinder & Seal Group-Bucket; (Bucket)1
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1559252 Cylinder & Seal Gp-Stick
15***52Cylinder & Seal Group-Stick; (Stick)1
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1559251 Cylinder Gp-Boom
1733490 Cylinder Gp-Bucket
1559253 Cylinder Gp-Stick
1141517 Drive Gp-Swing
1026439 Drive Gp-Swing
1141518 Drive Gp-Swing
1262075 Filter Gp-Hydraulic
12***75Filter Group-Oil; -Hyraulic Oil-Hydraulic, Case Drain1
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1262080 Filter Gp-Hydraulic
1843995 Filter Ar
18***95Filter Group-Oil; -Hydraulic1
18***48Filter Group-Oil; -Hydraulic Return1
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1884148 Filter Gp-Hydraulic
18***48Filter Group-Oil; -Hydraulic Return1
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4i6078 Filter Gp-Hydraulic
1076995 Filter Gp-Hydraulic
10***95Filter Group-Oil; -Hydraulic Return1
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1843997 Housing Gp-Filter
1321745 Installation Ar-Auxiliary
13***74Lines Group-Front; (Front)1
13***75Lines Group-Pilot; (Pilot)1
13***45Installation Ar-Pilot Lines1
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1426581 Knob As
08***70Sleeve8
12***52Kit-Cap1
13***06Control Group-Handle; (Joystick)1
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1282132 Knob As
1282133 Knob As
1319973 Lines Gp-Pilot
1321749 Lines Ar-Auxiliary Hydraulic
13***49Lines Ar-Auxiliary Hydraulic1
13***50Lines Group-Auxiliary Hydraulic; (Auxiliary Hydraulic)1
13***51Stick Group-Hoe; (Hoe)1
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1321752 Lines Ar-Auxiliary Hydraulic
13***52Lines Ar-Auxiliary Hydraulic1
13***53Lines Group-Auxiliary Hydraulic; (Auxiliary Hydraulic)1
13***54Stick Group-Hoe; (Hoe)1
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1321746 Lines Ar-Auxiliary Hydraulic
13***46Lines Ar-Auxiliary Hydraulic1
13***47Lines Group-Auxiliary Hydraulic; (Auxiliary Hydraulic)1
13***48Boom Group1
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1321750 Lines Gp-Auxiliary Hydraulic
13***50Lines Group-Auxiliary Hydraulic; (Auxiliary Hydraulic)1
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1321747 Lines Gp-Auxiliary Hydraulic
13***47Lines Group-Auxiliary Hydraulic; (Auxiliary Hydraulic)1
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1321753 Lines Gp-Auxiliary Hydraulic
13***53Lines Group-Auxiliary Hydraulic; (Auxiliary Hydraulic)1
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1321744 Lines Gp-Auxiliary Hydraulic
13***44Lines Group-Auxiliary Hydraulic; (Auxiliary Hydraulic)1
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1319960 Lines Gp-Boom
1319875 Lines Gp-Boom Cylinder
13***75Lines Group-Boom Cylinder; (Boom Cylinder)1
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1319876 Lines Gp-Boom Cylinder
13***76Lines Group-Boom Cylinder; (Boom Cylinder)1
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1319957 Lines Gp-Boom Cylinder
13***57Lines Group-Boom Cylinder; (Boom Cylinder)1
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1319878 Lines Gp-Bucket Cylinder
13***78Lines Group-Bucket Cylinder; (Bucket Cylinder)1
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1319971 Lines Gp-Front
1319969 Lines Gp-Front
1319967 Lines Gp-Front
1319974 Lines Gp-Front
1319952 Lines Gp-Front
1319975 Lines Gp-Pilot
5q4840 Lines Gp-Pilot
1319955 Lines Gp-Pilot
5q4844 Lines Gp-Pilot
1319965 Lines Gp-Pilot
1319972 Lines Gp-Pilot
1319959 Lines Gp-Pilot
1319956 Lines Gp-Pilot
1319970 Lines Gp-Pilot
1319968 Lines Gp-Pilot
1319954 Lines Gp-Pump
1319953 Lines Gp-Return & Filter-Part 2 Of 2
1319953 Lines Gp-Return & Filter-Part 1 Of 2
1319958 Lines Gp-Return & Filter-Part 1 Of 2
13***58Lines Group-Return & Filter; (Return & Filter)1
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1319958 Lines Gp-Return & Filter-Part 2 Of 2
13***58Lines Group-Return & Filter; (Return & Filter)1
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1319962 Lines Gp-Stick
1319961 Lines Gp-Stick
1319963 Lines Gp-Stick
1319877 Lines Gp-Stick Cylinder
13***77Lines Group-Stick Cylinder; (Stick Cylinder)1
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1049158 Lines Gp-Swing Motor
1319923 Lines Gp-Travel Motor
1319924 Lines Gp-Travel Motor
1119950 Valve Gp-Manifold & Reducing
11***50Manifold Group-Control; -Pilot Manifold1
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1195406 Motor Gp-Swing-Part 1 Of 2
1195406 Motor Gp-Swing-Part 2 Of 2
1467161 Mounting Gp-Valve
1318968 Pump & Mounting Gp
1336792 Pump Gp-Double Piston
1373640 Pump Gp-Hydraulic
1336766 Pump Gp-Piston & Gear
1076418 Screen Gp
1624696 Swivel Gp
1319862 Tank & Filter Gp-Hydraulic-Part 2 Of 2
1319862 Tank & Filter Gp-Hydraulic-Part 1 Of 2
1319861 Tank & Mtg Gp-Hydraulic
1315804 Valve Ar
13***04Valve Ar1
13***57Lines Group-Boom Cylinder; (Boom Cylinder)1
13***58Lines Group-Return & Filter; (Return & Filter)1
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1315806 Valve Ar-2 Way
11***84Valve Group-Pilot; -Alt Pattern Control, 2-Way1
12***00Film Group; -Alternate Pattern Control1
13***06Valve Ar-Alt Pattern Control1
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4i6363 Valve As-Ball
4I***63Valve As-Ball; (1-Pump/2-Pump Flow)1
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1461464 Valve As-Ball
14***64Valve As-Manual; -Auxiliary, Shutoff1
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1913149 Valve As-Ball
5i7083 Valve As Relief
7i7490 Valve Gp-Check
7i7496 Valve Gp-Check
1859063 Valve Gp-Check
18***63Valve Group-Check; -Slow Return1
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7i1285 Valve Gp-Check
1400663 Valve Gp-Check
1474181 Valve Gp-Check & Relief
1535231 Valve Gp-Control
1315763 Valve Gp-Main Control-Part 1 Of 2
1474141 Valve Gp-Control
1474168 Valve Gp-Control
1315763 Valve Gp-Main Control-Part 2 Of 2
1474278 Valve Gp-Control
1400818 Valve Gp-Control
1474178 Valve Gp-Control
14***78Valve Group-Control; (Travel) (Right)1
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1474166 Valve Gp-Control
1474226 Valve Gp-Control
14***26Valve Group-Control; (Work Tool)(Option)1
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1710189 Valve Gp-Flow Control
17***89Valve Group-Flow Control; -Cushion Swing1
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1057267 Valve Gp-Flow Control
1764984 Valve Gp-Pilot
17***84Valve Group-Pilot; -Joystick-Implement, Swing1
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1232148 Valve Gp-Pilot
12***48Valve Group-Pilot; -Platform Travel1
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1232604 Valve Gp-Pilot
12***04Valve Group-Pilot; -Third Pedal, Straight Travel1
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1185984 Valve Gp-Pilot
11***84Valve Group-Pilot; -Alt Pattern Control, 2-Way1
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1426571 Valve Gp-Pilot
13***14Valve Group-Pilot; (Implement, Swing)1
14***71Valve Group-Pilot; (Working Control)1
14***79Control Group-Pilot Operated Hydraulic; (Pilot Operated Hydraulic)1
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1426572 Valve Gp-Pilot
13***14Valve Group-Pilot; (Implement, Swing)1
14***72Valve Group-Pilot; (Working Control)1
14***80Control Group-Pilot Operated Hydraulic; (Pilot Operated Hydraulic)1
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1315914 Valve Gp-Pilot
13***14Valve Group-Pilot; (Implement, Swing)1
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1232146 Valve Gp-Pilot
1195219 Valve Gp-Pilot
11***19Valve Group-Pilot; -1-Pump, 2-Pump, Boom Priority1
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1843899 Valve Gp-Pilot
1315776 Valve Gp-Pilot
13***76Valve Group-Pilot; (Travel Control)1
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1843900 Valve Gp-Pilot
1232147 Valve Gp-Pilot
1020871 Valve Gp-Pilot Relief
1373641 Valve Gp-Compensator
1373642 Valve Gp-Compensator
1400633 Valve Gp-Pilot Relief
14***33Valve Group-Relief; (Line)(Variable Adjustable Boom)1
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0858724 Valve Gp-Relief
08***24Valve Group-Relief; -1-Way Flow-Line1
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7i1044 Valve Gp-Relief
1057460 Valve Gp-Pilot Relief
10***60Valve Group-Relief; (Work Tool)1
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1505908 Valve Gp-Relief
1400634 Valve Gp-Relief
1077058 Valve Gp-Selector
10***58Valve Group-Selector; -Hydraulic Activation Control1
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1373637 Valve Gp-Solenoid
3e9205 Valve Gp-Solenoid
3E***05Valve Group-Solenoid; -Variable Fan Speed1
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1211491 Valve Gp-Solenoid
12***91Valve Group-Solenoid; -Hydraulic Activation Control1
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1211490 Valve Gp-Solenoid
1119916 Valve Gp-Press Reducing Sol
11***16Valve Group-Solenoid; -Grapple Signal-Ground Saw, Grapple Control1
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Implements
1066757 Adjuster Gp-Bucket
10***57Adjuster Group-Bucket; (Bucket)1
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1349079 Boom & Bearing As
13***79Boom & Bearing As1
15***83Boom & Bearing As1
15***84Boom & Bearing As1
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1531484 Boom & Bearing As
1531483 Boom & Bearing As
1324007 Boom Ar-1 Piece Long
13***60Lines Group-Boom; (Boom)1
13***90Lighting Group-Boom; (Boom)1
13***07Boom Ar-1 Piece Long1
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1321748 Boom Gp
1332830 Boom Gp
1473947 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
14***47Bucket & Adjuster Group1
14***48Bucket As-Excavation; (Excavation)1
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1473943 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
14***43Bucket & Adjuster Group1
14***44Bucket As-Excavation; (Excavation)1
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1473951 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
14***51Bucket & Adjuster Group1
14***52Bucket As-Excavation; (Excavation)1
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1473945 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
14***45Bucket & Adjuster Group1
14***46Bucket As-Excavation; (Excavation)1
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1778182 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
17***82Bucket & Adjuster Group1
17***83Bucket As-Heavy Duty Rock1
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1778243 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
17***43Bucket & Adjuster Group1
17***44Bucket As-Heavy Duty Rock1
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1778024 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
17***04Bucket & Adjuster Group1
17***05Bucket As-Heavy Duty Rock1
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1473949 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
14***49Bucket & Adjuster Group1
14***50Bucket As-Excavation; (Excavation)1
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1778217 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
17***17Bucket & Adjuster Group1
17***18Bucket As-Heavy Duty Rock1
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1778230 Bucket & Adjuster Gp
10***57Adjuster Group-Bucket; (Bucket)1
17***30Bucket & Adjuster Group1
17***31Bucket As-Heavy Duty Rock1
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1473944 Bucket As-Excavation
14***44Bucket As-Excavation; (Excavation)1
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1473950 Bucket As-Excavation
14***50Bucket As-Excavation; (Excavation)1
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1473948 Bucket As-Excavation
14***48Bucket As-Excavation; (Excavation)1
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1473946 Bucket As-Excavation
14***46Bucket As-Excavation; (Excavation)1
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1473952 Bucket As-Excavation
14***52Bucket As-Excavation; (Excavation)1
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1778183 Bucket As
1778205 Bucket As
1778218 Bucket As
1778231 Bucket As
1778244 Bucket As
1332831 Lines Gp-Grease
1324049 Linkage Ar-Bucket
13***49Linkage Ar-Bucket1
13***34Cylinder & Lines Group-Bucket; (Bucket)1
13***46Linkage Group-Bucket; (Bucket)1
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1324048 Linkage Ar-Bucket
13***48Linkage Ar-Bucket1
13***34Cylinder & Lines Group-Bucket; (Bucket)1
13***45Linkage Group-Bucket; (Bucket)1
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1348846 Linkage Gp-Bucket
1348845 Linkage Gp-Bucket
7y0729 Sidecutter Gp
1324045 Stick Ar-Hoe
13***62Lines Group-Stick; (Stick)1
13***45Stick Ar-Hoe1
13***34Stick Group-Hoe; (Hoe)1
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1324044 Stick Ar-Hoe
13***61Lines Group-Stick; (Stick)1
13***44Stick Ar-Hoe1
13***32Stick Group-Hoe; (Hoe)1
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1324046 Stick Ar-Hoe
13***63Lines Group-Stick; (Stick)1
13***46Stick Ar-Hoe1
13***35Stick Group-Hoe; (Hoe)1
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1332834 Stick Gp-Hoe
1332832 Stick Gp-Hoe
1332835 Stick Gp-Hoe
1321754 Stick Gp-Hoe
1321751 Stick Gp-Hoe
3g3237 Tip Gp-Penetration
4t2215 Tip Gp-Wide
8e3756 Tip Gp-Abrasion
8E***56Tip Group-Abrasion; -J-300, Heavy-Duty1
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9j3167 Tip Gp-Long
8e3751 Tip Gp-Long
8E***51Tip Group-Long; -J-300, Heavy-Duty1
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9w9189 Tip Gp
9W***89Tip Group-Penetration; -Sharp Corner1
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9w9188 Tip Gp
9W***88Tip Group-Penetration; -Sharp Center1
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9j3175 Tip Gp-Short
Lubrication System
1593125 Adapter Gp-Remote Oil Filter
15***25Adapter Group-Remote Oil Filter1
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1355710 Filter Gp-Engine Oil
1515283 Fumes Disposal Gp
1166720 Gauge Gp-Oil Level (Dipstick)
11***20Gauge Group-Oil Level (Dipstick); (Oil Level) (Dipstick)1
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1197218 Pump Gp-Engine Oil
11***18Pump Group-Engine Oil; (Engine Oil)1
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Operator Station
1502234 Air Conditioner & Mounting Gp
15***34Air Conditioner & Mounting Group1
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1300383 Air Conditioner & Mounting Gp
1540715 Air Conditioner Ar
15***34Air Conditioner & Mounting Group1
15***18Compressor Group-Refrigerant; (Refrigerant)1
15***15Air Conditioner Ar1
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1337967 Air Conditioner Ar
13***83Air Conditioner And Mounting1
13***83Compressor Group-Refrigerant; (Refrigerant)1
13***67Air Conditioner Ar1
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1300250 Air Conditioner Gp
1680808 Air Conditioner Gp
1484811 Air Conditioner Gp
1597855 Air Conditioner Gp
1116413 Air Conditioner Gp
1229602 Arm As-Wiper
1474833 Blower Gp
6i5444 Box Gp-Storage
1556995 Cab Gp
1116271 Cab Gp (Basic)-Part 2 Of 2
1244012 Cab Gp
1557019 Cab Gp (Basic)-Part 1 Of 2
1557020 Cab Gp (Basic)-Part 1 Of 2
1557020 Cab Gp (Basic)-Part 2 Of 2
1116294 Cab Gp (Basic)-Part 1 Of 2
1557019 Cab Gp (Basic)-Part 2 Of 2
1116294 Cab Gp (Basic)-Part 2 Of 2
1540674 Cab Gp
1116271 Cab Gp (Basic)-Part 1 Of 2
1116293 Cab Gp
1116270 Cab Gp
1244013 Cab Gp (Basic)-Part 1 Of 2
1244013 Cab Gp (Basic)-Part 2 Of 2
1116286 Heater Gp-Cab
11***86Cab Heater1
11***89Duct Group-Defroster1
11***91Duct Group-Air1
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1516618 Compressor Gp-Refrigerant
15***18Compressor Group-Refrigerant; (Refrigerant)1
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1318983 Compressor Gp-Refrigerant
13***83Compressor Group-Refrigerant; (Refrigerant)1
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1352247 Condenser & Mtg Gp-Air Cond
13***47Condenser & Mtg Group-Refrigerant1
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1566482 Condenser & Mtg Gp-Air Cond
15***82Condenser & Mtg Group-Refrigerant1
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1116280 Console Gp
1116278 Console Gp-Operator
1116279 Console Gp
1557084 Console Gp
1557008 Console Gp
1557039 Cover Gp
1557027 Cover Gp-Storage
1116277 Cover Gp-Storage
1680746 Distributor As
1557053 Door Gp-Cab
1557054 Door Gp-Cab
4i6974 Door Gp-Cab
4i6973 Door Gp-Cab
1397151 Duct As
1352255 Duct As
1243982 Duct As
1282150 Duct Gp-Air
4i1170 Duct Gp-Air
4I***70Duct Group-Air; Duct Gp-Air (Basic)1
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1116291 Duct Gp-Air
1397150 Duct Gp-Air
1282149 Duct Gp-Air
1243985 Duct Gp-Air
1282148 Duct Gp-Defrost
1116289 Duct Gp-Defrost
1324052 Guard Ar-Vandalism
12***07Guard Group-Vandalism1
13***52Guard Ar-Vandalism1
13***94Box & Mtg Group-Tool; (Storage)1
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1324053 Guard Ar-Vandalism
11***21Guard Group-Vandalism1
13***53Guard Ar-Vandalism1
13***94Box & Mtg Group-Tool; (Storage)1
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1282156 Guard Gp-Window
1116321 Guard Gp-Vandalism
1244007 Guard Gp-Vandalism
4i1273 Hatch Gp
4i4204 Hatch Gp
1229648 Headrest As
1519682 Heater & Mounting Gp
1300381 Heater & Mounting Gp
1519678 Heater Gp-Cab
12***48Duct Group-Defroster1
12***49Duct Group-Cab Air1
12***50Duct Group-Air1
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1597856 Heater Gp
1474854 Heater Gp
1116288 Heater Gp
1397258 Heater Gp
1680809 Heater Gp
4i5408 Horn Gp-Electric
1176265 Lever As
1597744 Lever As
15***44Lever Group-Control; (Hydraulic Controls Lockout) (Hydraulic Activation Control)1
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1337968 Lines Gp-Air Condottiere
13***68Lines Group-Air Conditioner; (Air Conditioner)1
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1566488 Lines Gp-Air Condottiere
15***88Lines Group-Air Conditioner; (Air Conditioner)1
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1566523 Lines Gp-Heater
1337963 Lines Gp-Heater
7y0059 Literature Gp
09***45Cable; (Lanyard)1
5P***58Sleeve; (Cable Splice)2
5P***00Key Total 2 Pieces Per Unit; (Literature Compartment)2
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1519670 Mirror Gp-Rear View
1060176 Monitor Gp-Operator
1133452 Motor As-Window Wiper
1229603 Motor As-Window Wiper
1540591 Platform Gp-Operator
1116285 Platform Gp-Operator
1400858 Radio Gp-Am/Fm
14***58Radio Group; (Am/Fm)1
14***65Wiring Group-Console; (Console)1
14***67Wiring Group-Radio1
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1219055 Mirror Gp-Rear View
1540775 Seat As
1597672 Seat As
1229625 Seat Belt Gp
12***25Seat Belt Group; -Retractable, 3-In1
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1502200 Seat Gp
1502201 Seat Gp
1116282 Seat Gp
1116283 Seat Gp
1243925 Seat Gp
1116360 Seat Gp-Heated
1519617 Seat Gp
1116281 Support Gp-Seat
1300340 Suspension As-Seat
1116391 Suspension Gp-Seat
1243926 Suspension Gp-Seat
4i0559 Tank As-Window Washer
8r1774 Bottle Gp-Windshield Wiper
1116313 Visor Gp-Sun
6i5387 Visor Gp-Protection-Rain
1338020 Washer Gp-Window
1843965 Window Ar-Cab
18***65Window Ar-Cab1
18***03Window Group-Cab1
18***04Film Group; -Cab Window, Rear1
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4i6966 Window As-Door
1843966 Window Gp
1844003 Window Gp-Cab
1557058 Window As-Door
1557045 Window Gp
1116273 Window Gp
1557043 Window Gp
1243963 Window Gp
1282139 Washer Gp-Window
1282138 Wiper & Washer Gp-Window
12***38Wiper & Washer Group-Window; -Lower1
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1232137 Wiper Ar-Lower
11***95Wiring Group-Window Wiper1
12***37Wiper Arrangement1
12***38Wiper & Washer Group-Window; -Lower1
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1116272 Wiper Gp-Window
1557041 Wiper Gp-Window
Power Train
1505909 Cap As
1089188 Carrier As-Planetary
1141326 Carrier As
1026434 Fastener Gp-Swing & Final Dr
10***34Fastener Group-Swing & Final Dr1
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1362798 Final Drive Gp -Part 1 Of 2
1342798 Final Drive Gp -Part 2 Of 2
1362850 Final Drive Gp
1484570 Final Drive Gp -Part 1 Of 2
1484570 Final Drive Gp -Part 2 Of 2
1505907 Head As
1373693 Head As
1028130 Sprocket Gp-Nonsegmented
Service Equipment And Supplies
1324143 Film Gp
1324144 Film Gp
1324142 Film Gp
1205100 Film Gp
12***00Film Group; -Alternate Pattern Control1
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1449113 Film Gp
1844004 Film Gp
1666124 Kit-Air Inlet Heater
16***24Kit-Starting Aid; (Air Inlet Heater)1
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1324139 Plate & Film Gp-Part 2 Of 3
1324136 Plate & Film Gp-Part 2 Of 3
1324136 Plate & Film Gp-Part 3 Of 3
1324136 Plate & Film Gp-Part 1 Of 3
1324139 Plate & Film Gp-Part 3 Of 3
1324146 Plate & Film Gp-Part 1 Of 3
1324146 Plate & Film Gp-Part 2 Of 3
1324145 Plate & Film Gp-Part 2 Of 3
1324145 Plate & Film Gp-Part 1 Of 3
1324145 Plate & Film Gp-Part 3 Of 3
1324146 Plate & Film Gp-Part 3 Of 3
1324139 Plate & Film Gp-Part 1 Of 3
1324182 Tool Ar
10***95Tool Group1
13***82Tool Ar1
13***83Mounting Group-Grease Gun; (Grease Gun)1
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1025495 Tool Gp

3046 serial number reference

The 3046 engine serial tag is a small stamped or riveted data plate on the engine itself, typically on the rocker cover (valve cover) near the fuel injection pump on the left side of the engine, with the engine serial number also stamped into the block - not on the machine's PIN plate in the cab. Read the first three characters as the engine prefix (identifies the production range) and the following digits as the sequential build number, e.g. 5XK01234. Because this is an engine serial number rather than a full machine PIN, it must be read separately from the excavator, dozer, or loader's own serial plate.

PrefixIdentifies
5XK3046 / 3046T inline-six, primary production range
MHK3046 / 3046T inline-six, secondary production range

Frequently asked questions

What engine is the Caterpillar 3046?

The 3046 is Cat's designation for a mechanically governed, direct-injection inline-six diesel built on the Mitsubishi S6S block, offered naturally aspirated (3046) and turbocharged (3046T). Displacement is 5.0 liters (305 cu in), with output roughly 57 to 93 kW (77 to 125 hp) depending on rating and turbo status. It carries no electronic controls or diagnostic fault codes.

What is the Caterpillar 3046's operating weight?

The 3046 is a component engine, not a standalone machine, so it has no operating weight of its own. Cat fitted it across several unrelated chassis, including small dozers, Hystat track loaders, and mini and mid excavators, spanning roughly 7 to 18 tonnes (15,000 to 40,000 lb) depending on the host model. Check the specific machine's page for its operating weight.

What replaced the Caterpillar 3046?

No single engine replaced the 3046 across the board, because it powered several different machine families. Cat phased it out model by model as its dozers, loaders, and excavators in these classes moved to Cat's own electronically controlled diesels, for example the C4.4 ACERT engine that followed in the D3K, D4K, and D5K small dozers. Check the later generation of your specific machine for its replacement engine.

What 3046 owners discuss

What exactly is the Cat 3046 engine, and does output differ much between the machines it's fitted to?
The 3046 is Caterpillar's designation for a Mitsubishi-built inline six closely related to the Mitsubishi S6S family, not a from-scratch Cat design. Displacement is 5.0 L (305 cu in), bore/stroke about 94 mm x 120 mm, four-stroke direct injection. Cat used the same basic block across small dozers (D3C/D3G, D4C/D4G, D5C/D5G), track loaders (933/933C, 939/939C) and mini/mid excavators (315B/315BL/315C, 317B, 318B), tuning output by application: naturally aspirated ratings run roughly 52 kW (70 hp) in the D3 class, 60 kW (80 hp) in the D4 class, and 67 kW (90 hp) in the D5 class, while the turbocharged 3046T in the excavator line runs higher, commonly cited near 71-74 kW (95-99 hp) though some rebuild listings show up to 89-93 kW (120-125 hp) depending on rating. Treat exact figures as varying by configuration/series. It is a different engine from the 3054 fitted to Cat skid steers, a mix-up that shows up often in parts searches.
Owners report steady oil consumption and oil weeping from the turbo. Is that a known 3046 trait?
Yes, it's a recurring complaint on the turbocharged 3046T. Reports describe noticeable daily oil consumption with visible oil at the turbo exhaust outlet ahead of the muffler, traced to worn turbo shaft seals letting oil migrate to the turbine side. Owners chasing this typically ruled out the head gasket and cylinder condition first (compression check, dry cylinders) before pulling the turbo, since seal wear is the more common culprit and the fix is a turbo cartridge/core rather than an engine teardown. A trigger mentioned alongside this and thrown-rod failures is continuing to run after a low-oil-pressure warning instead of shutting down immediately. The block uses dry-type cylinder liners, so once bearings or a rod let go from oil starvation it becomes a full inframe job rather than a quick liner swap.
Coolant is showing up in the engine oil. What do 3046 owners check first?
The troubleshooting order matches what's used across Cat's mechanical engine lineup: pull and pressure-test the oil cooler core first, since it fails more often than the head gasket. Bubbles appearing in the coolant during a static pressure or compression check point toward the head gasket or a cracked head/liner seal instead. If the cooler tests clean, the next step is pulling the head to check for cracks and gasket-surface damage. This involves a pressurized cooling system and head fasteners with a specific torque sequence, so have your dealer or a qualified shop verify the diagnosis and torque spec before reassembly.
What powertrain quirks show up on the small dozers this engine is paired with, hystat or clutch-steer?
On hystat-equipped D5C dozers, owners describe hesitation shifting into forward once the machine is warm, along with pressure loss and neutral-switch complaints traced to worn hydrostatic pump/motor components or air drawn into the charge circuit. A high-hour hystat pump is treated as a likely rebuild-or-replace item, and an oil sample is the common way owners judge whether a used unit's pump is still healthy rather than relying on a short test drive. On the older clutch-and-brake steering dozers in this family (D3C/D4C and early D5C), a recurring complaint is one side steering only under heavy brake pedal pressure, traced to worn linkage rollers, a weak valve spool return, or low steering-valve circuit pressure; the clutches need substantial circuit pressure to release cleanly. Steering and brake circuit work affects operator safety directly, so have your dealer verify pressures and clutch condition before returning the machine to service.
Is there a typical undercarriage wear pattern on these small dozers and loaders?
Yes, and it follows the same pattern reported across Cat's small track-type machines: bushings and link rail height wear down first, bottom rollers wear until they ride on the link pin boss instead of the rail, and idler travel runs out as the chain stretches. Owners flag audible squeal during operation as a sign of dry joints needing grease or early bushing wear. Undercarriage repair or replacement is one of the larger line items in reconditioning one of these machines, so daily removal of packed material from the roller frame, idlers and equalizer bar is the standard preventive habit reported by long-term owners.
What electrical issues come up with the 3046? Is it prone to sensor faults like newer Cat engines?
Not really. This engine predates electronic engine management, so there's no ECM fault-code layer to chase. Reported electrical complaints are basic charging-system issues: a no-charge alternator is more often traced to a blown fuse, a corroded ground, or failed ignition-excite wiring than to the alternator itself, so owners check fuses, wiring and grounds before swapping the alternator. On the oil pressure gauge side, some owners report low-teens psi at idle with normal pressure once rpm comes up, and treat that as within range for this engine as long as it's consistent. Persistently low pressure at both idle and running speed is treated as a pump or relief-valve issue worth investigating rather than a gauge or sensor fault.
What should I check before buying a used machine with a 3046 or 3046T engine?
Hours alone aren't the deciding factor; maintenance history matters more. As a reference point, owners treat 7,000-10,000 hours as when a major dozer or loader overhaul becomes likely, and roughly 9,000-10,000 hours for the excavator versions. Walk the engine for soot, weeping fittings and cracked hoses, and check the dipstick and filler for dark, gritty oil. Check the turbo exhaust outlet for oil residue (the seal-wear symptom noted above) and ask for injector and injection-pump service records, since leaking injectors and pump wear show up as black smoke and hard starting. On a hystat dozer, ask for a hydraulic oil sample rather than judging pump health from a short test drive. Finish with a full undercarriage inspection, since wear there is a major share of any reconditioning quote. Have your dealer or an independent tech verify compression/leak-down and hystat pump condition before you commit.

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

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