Caterpillar 301.8C
Caterpillarmini hydraulic excavator(no series)

Caterpillar 301.8C

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 301.8C is a compact mini excavator designed for high-performance excavation, landscaping, and demolition in tight-access environments. This machine belongs to the under 2-ton weight class, with a documented operating weight of approximately 1.78 tonnes (3,936 lbs). It features a Mitsubishi L3NE NA Diesel engine delivering 19 hp (14 kW) or 18.1 hp (13.5 kW) depending on ISO rating. The series includes various configurations such as standard and long stick options, with a tail swing radius of 3.58 ft (1.09 m).

The 301.8C was manufactured between 2005 and 2015. This generation is highly valued in the used market due to its durable Mitsubishi powertrain and ease of service via ground-level access points and a tilt-up cab design. The machine remains a critical asset for owners seeking reliable performance in utility trenching and small-scale earthmoving, offering high stability and compatibility with various Caterpillar work tools through its mechanical quick coupler system.

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 301.8C specifications

Engine

ModelMitsubishi L3NE NA Diesel (also listed as C1.1 or L3E)
Gross Power21.60 hp (16.10 kW)
Net PowerVaries by series: 18.1 hp (13.5 kW) to 21.00 hp (15.70 kW)
Displacement53 cu in (868 cc) to 69.00 cu in (1.10 l)
Cylinders3
Emissions TierMeets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 standards

Weights

Operating WeightVaries by configuration: 3703 lb (1680 kg) to 4473 lb (2029 kg)
Ground Pressure3.90 psi (26.80 kPa) to 4.30 psi (29.60 kPa)

Dimensions

Transport LengthVaries by configuration: 12.08 ft to 146.50 in (3720 mm)
Transport Width3.22 ft (980 mm) to 4.42 ft (1350 mm)
Transport Height7.17 ft (2200 mm) to 90.60 in (2300 mm)
Tail Swing Radius3.58 ft (1091 mm) to 39.20 in (995 mm)
Track Shoe Width230 mm (9 in) to 230 mm (9.10 in)
Ground Clearance150 mm (0.49 ft) to 150 mm (5.90 in)
Undercarriage Length62.60 in (1590 mm)

Performance

Max Dig DepthVaries by stick: 6.8 ft (2073 mm) to 101.2 in (2570 mm)
Max Reach at GroundVaries by stick: 9.8 ft (3000 mm) to 158.70 in (4030 mm)
Max Dump Height7.7 ft (2344 mm) to 103.90 in (2640 mm)
Max Cutting Height10.9 ft (3323 mm) to 11.33 ft (3453 mm)
Swing Speed9.8 rpm to 10.5 rpm
Travel SpeedLow: 1.8 mph (2.9 km/h) to 1.8 mph (2.9 km/h); High: 2.7 mph (4.4 km/h) to 3 mph
Gradeability30 degrees

Forces

Bucket Digging Force15.4 kN (3462 lbf) to 19.60 kN (4406.30 lbf)
Stick/Arm Digging ForceStandard: 9.9 kN (2226 lb) to 11.3 kN (2540.30 lbf); Long: 8.8 kN (1978 lb) to 9.8 kN (2203.10 lbf)

Service capacities (summary)

Fuel Tank22 L (5.8 gal) to 26 L (6.90 gal)
Hydraulic System/TankHydraulic Tank: 18 L (4.8 gal) to 26 L (6.9 gal); Total System: 37 L (9.8 gal)
Engine Oil4.2 L (1.1 gal) to 4.4 L (1.2 gal)
Cooling System3.9 L (1.0 gal) to 4.2 L (1.1 gal)

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

301.8C fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)4.1 l (1.1 gal US)Cat Lube Oil
Cooling system4 l (1.06 gal US)Not specified
Fuel tank22 l (5.8 gal US)ULSD (ultra-low sulfur diesel fuel) with 15 ppm sulfur or less; can be blended with up to 20% biodiesel FAME, 100% renewable diesel, HVO, or GTL fuels
Hydraulic system total37 l (9.8 gal US)Not specified
Hydraulic tank24 l (6.3 gal US)Not specified
Grease

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

Caterpillar 301.8C maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition
  • Inspect hydraulic fluid level via sight glass
  • Verify coolant level and cap integrity
  • Drain water from fuel/water separator
  • Check air filter restriction indicator
  • Inspect for external fluid leaks
Every 250 h
  • Change engine oil and filter
  • Grease all boom, stick, bucket, and swing points
  • Drain fuel/water separator
  • Perform visual inspection of machine components
  • Check air filter primary element
  • Inspect belts and hoses
Every 500 h
  • Replace fuel filter
  • Replace hydraulic return filter
  • Perform battery service
  • Conduct detailed undercarriage inspection
  • Test coolant additive/SCA levels
  • Complete all PM1 tasks
Every 1,000 h
  • Perform hydraulic oil sample analysis (S.O.S)
  • Service final drive oil
  • Inspect turbocharger
  • Check ROPS bolt torque
  • Measure undercarriage wear
  • Complete all PM2 tasks
Every 2,000 h
  • Change hydraulic system oil
  • Perform coolant flush and replace
  • Conduct comprehensive structural inspection of boom/stick welds
  • Evaluate major components
  • Complete all PM3 tasks

Servicing the 301.8C beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize Cat S.O.S Services to monitor engine oil, hydraulic fluid, and coolant. Analyze wear metals like iron or copper and check for silicon contamination from dust ingestion. Use the hydraulic oil sight gauge and S.O.S valve for efficient sampling. Regular analysis of hydraulic fluid particle counts (ISO cleanliness) prevents premature pump and valve failure by detecting degradation before catastrophic damage occurs.

Corrective & Common Repairs

Monitor hydraulic hoses for cracks, abrasion, or leaks to prevent pressure loss. Inspect pins, bushings, and linkage connections regularly; worn components lead to boom backlash. Ensure the mechanical quick coupler remains free of debris traps to maintain secure tool changes. If hydraulic performance drops, inspect the variable displacement pump and check for contamination in the return filters or valve control elements.

Overhaul & Rebuild Points

Plan major interventions around the 2,000-hour mark, focusing on a full hydraulic oil change and coolant flush. Conduct comprehensive structural inspections of boom and stick welds to identify fatigue. Evaluate major components including the engine, final drives, and swing drive. During rebuild points, check turbocharger integrity and torque all ROPS bolts to factory specifications to ensure machine safety and structural longevity.

Seasonal & Environment Servicing

In high-dust or quarry environments, check air filters daily and clean radiator/oil cooler fins frequently. Shorten engine oil intervals to 200 hours if operating in extreme sand conditions. For machines used in snow removal, inspect the dozer blade float function and ensure all lights and backup alarms are operational. Always verify battery condition and terminal cleanliness before seasonal storage or use in cold climates.

301.8C common service parts

Part numberPart
139-4834Filter Element As-AirCheck fitment →
249-8558Filter Element As-Cab AirCheck fitment →
266-8337Filter Element-OilCheck fitment →
278-3369BreatherCheck fitment →
149-4533Filter Element-OilCheck fitment →

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

301.8C fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
110-0Engine coolant temperature above normal rangeLow coolant level, thermostat failure, or radiator blockageInspect cooling system, refill coolant, and test thermostat function
110-3Engine coolant temperature sensor voltage highOpen circuit or sensor failureCheck wiring harness and replace sensor if fault persists
41-38-Volt DC supply voltage above normalShort to power on the 8V reference circuitInspect sensors sharing the 8V supply and isolate the fault
41-48-Volt DC supply voltage below normalShort to ground on the 8V reference circuitDisconnect sensors one at a time to locate the short
190-8Engine speed abnormal frequencySpeed sensor air gap, sensor failure, or tone ring damageCheck sensor gap and test the speed sensor and tone ring
174-3Engine fuel temperature voltage above normalOpen circuit in sensor wiringInspect wiring harness and replace sensor if necessary

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

301.8C attachments & work tools

Buckets

Reference capacity is 0.1 yd³. Available configurations include standard and long stick options with varying digging depths. Attachments may include rotary screen, clamshell, ditching, or tilt buckets.

Hydraulic hammers

Compatible with hydraulic breaker/hammer class attachments for the 301.8 series. Includes excavator mounted vibro hammers and advanced breaker attachments.

Quick couplers

Supports excavator couplers, hitches, and tilt quick couplers. Precision-engineered couplers are designed for swift attachment changes.

Thumbs/grapples

Available in rigid, hydraulic, or progressive link configurations. Grapple options include log grapples, orange peel/scrap grabs, and rock grapples.

Rippers

Includes multi-ripper teeth for rocky landscapes and specialized rippers designed for harsh conditions.

Hydraulic-kit notes

Primary auxiliary circuit provides 8.70 gpm (33.00 L/min) at 3553.40 psi (245.00 bar). Secondary auxiliary circuit provides 3.70 gpm (14.00 L/min) at 3553.40 psi (245.00 bar).

All 301.8C assemblies by section

Every catalogued assembly group for the Caterpillar 301.8C. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
246-4172 Air Cleaner Gp
22***15Manifold-Exhaust1
22***16Gasket1
22***18Stud4
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240-3256 Air Cleaner Gp
09***28Indicator-Air Filter Change; (Air Filter Service)1
13***34Filter Element As-Air; (Primary)(Air Compressor)1
15***66Valve1
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223-0085 Manifold Gp-Exhaust
19***12Bolt; (M6x1x18-mm)4
22***85Manifold Group-Exhaust1
22***98Bolt2
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265-7846 Manifold Gp-Inlet
12***39Bolt; (M10x1.25x25-mm)1
13***70Gasket1
15***59Bolt; (M12x1.25x95-mm)2
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240-3267 Muffler & Mounting Gp
15***81Pin-Clevis1
24***67Muffler & Mounting Group1
25***46Bracket1
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Basic Engine
223-0069 Camshaft Gp
22***69Camshaft Group1
22***27Key; (Crankshaft)1
22***31Camshaft1
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223-0074 Cover Gp-Valve Mechanism
22***74Cover Group-Valve Mechanism1
22***40Gasket1
22***41Pipe1
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223-0068 Crankshaft Gp
22***68Crankshaft Group1
22***26Crankshaft1
22***27Key; (Crankshaft)2
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223-0105 Cylinder Block As
10***11Cap-Sealing2
19***80Cap3
22***05Cylinder Block As1
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223-0064 Cylinder Block Gp
14***17Bolt; (M10x1.25x25-mm)6
19***05Pin-Dowel2
19***09Bushing2
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267-4395 Cylinder Head As
19***80Cap1
22***34Cap3
22***35Guide-Valve6
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265-7840 Cylinder Head Gp
22***36Gasket1
22***37Bolt8
22***38Bolt3
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240-3226 Drain Gp-Engine Oil -Ecology
24***26Drain Group-Engine Oil; -Ecology1
24***73Plug-Drain; (Engine Oil)1
25***58Tube As-Ecology Drain1
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265-7842 Flywheel Gp
22***87Gear-Ring1
22***88Bolt4
26***42Flywheel Group1
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223-0077 Gear Gp-Front
19***22Bolt; (M6x1x16-mm)2
22***77Gear Group-Front1
22***76Gear-Camshaft1
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223-0420 Gear Gp-Front
19***66Gasket1
19***76Plug1
19***39Plunger1
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223-0076 Housing Gp-Front
19***15Cap As; (Engine Oil Filler)1
19***18Seal-O-Ring1
19***12Bolt; (M6x1x18-mm)4
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223-0072 Lifting Gp-Engine
22***72Lifting Group-Engine1
22***39Plate-Lifting2
3B***05Washer,Lock Tube Assembly Mounting; Used On Engine P/N 5r6982
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240-3219 Mounting Gp-Engine
12***39Bolt; (M10x1.25x25-mm)6
15***59Bolt; (M12x1.25x95-mm)4
16***95Washer; (16.5x71.5x3-mm Thk)6
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265-7843 Pan Gp-Oil
19***07Tube1
19***66Gasket1
19***67Plug; (Engine Oil Drain)1
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223-0065 Piston & Rod Gp
22***65Piston & Rod Group1
22***23Set-Bearing1
22***24Set-Bearing; (0.25-mm Us)1
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279-7134 Pulley Gp
16***63Pulley1
27***34Pulley Group1
28***41V-Belt; (Fan Pulley)1
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265-7841 Pulley Gp-Crankshaft
22***83Nut1
22***84Washer1
22***85Washer1
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223-0075 Valve Mechanism Gp
19***61Washer3
19***02Washer; (8.5x16x1.2-mm Thk)3
19***87Retainer6
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Cooling System
265-7851 Fan Gp-Suction
22***53Plate1
24***46Hose; (Upper Radiator)1
24***53Hose; (Lower Radiator)1
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240-3270 Lines Gp-Coolant
19***12Bolt; (M6x1x18-mm)6
22***70Bolt1
22***73Bolt1
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265-7845 Pump Gp-Water
12***43Seal; (70-cm)0
14***36Tank As-Coolant; (Recovery)1
14***38Cap As; (Coolant Recovery)1
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240-3228 Radiator & Mounting Gp
24***28Radiator & Mounting Group1
24***70Hose-Air1
24***72Air Cleaner Group1
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Electrical And Starting System
241-3765 Alarm Gp-Travel
10***12Seal; (Interface)1
12***72Switch As-Ball; (Load Limit)2
14***95Shim; (0.5-mm Thk)4
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265-7850 Alternator Gp-Charging
10***43Seal; (32-cm Each)0
11***90Fuse; (10 Amp)4
11***91Fuse; (15-Ampere)3
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241-3754 Battery & Wiring Gp -Center
14***47Lighting Group-Flood; -Boom1
23***53Wiring Group-Engine1
24***24Wiring Group-Lighting; -Canopy1
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239-8556 Electrical Ar
14***47Lighting Group-Flood; -Boom1
23***08Wiring Group-Console; -Adjustable Gauge Undercarriage1
23***53Wiring Group-Engine1
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239-8559 Electrical Ar
22***87Glow Plug3
22***88Plate1
23***59Electrical Ar1
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223-0090 Glow Plug Gp
22***90Glow Plug Group1
26***33Element As-Jacket Water Heater; (12-Volt, 400-Watt)1
26***34Cord As-Heater Element; (12-Volt, 15-Ampere)1
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322-0305 Heater Gp-Jacket Water
16***56Bracket; (Lamp Retaining)1
17***91Bracket Assem.1
17***92Body Assem.1
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268-0843 Heater Gp-Jacket Water
26***43Heater Group-Jacket Water1
31***31Element As-Jacket Water Heater; (120-Volt, 400-Watt)1
32***56Cord As-Heater Element; (120-Volt, 15-Ampere)1
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212-9347 Lamp Gp-Flood -Vertical
16***56Bracket; (Lamp Retaining)1
20***14Lens As; (Floodlight)1
21***47Lamp Group-Flood; -Vertical-Cab1
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240-0102 Lamp Gp-Flood -Canopy
24***02Lamp Group-Flood; -Canopy1
27***00Lens; (Amber)(Warning Beacon)1
9R***42Plug As1
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309-1325 Lamp Gp-Warning Beacon -Amber
1S***93Strap; (Cable) (0.62in Dia)1
21***49Lamp Group-Flood; (12-Volt)(Boom, Rh)1
23***40Harness As-Lighting; (Boom)1
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149-7847 Lighting Gp-Flood -Boom
14***47Lighting Group-Flood; -Boom1
1S***93Strap; (Cable) (0.62in Dia)1
21***49Lamp Group-Flood; (12-Volt)(Boom, Rh)1
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310-4994 Lighting Gp-Flood -Boom
30***25Lamp Group-Warning Beacon; -12-Volt, Amber1
31***94Lighting Group-Flood; -Boom1
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152-8151 Lighting Gp-Warning Beacon
15***51Lighting Group-Warning Beacon1
22***86Bolt2
27***57Motor As-Electric1
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272-0456 Starting Motor Gp-Electric
11***99Gasket; (Air Conditioner Control)1
11***90Fuse; (10 Amp)1
11***92Fuse; (20 Amp)1
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248-5710 Wiring Gp-Cab
11***99Gasket; (Air Conditioner Control)1
24***71Harness As-Console; (Adjustable Gauge Undercarriage)1
24***91Switch As-Rocker; (Adjustable Gauge Undercarriage)1
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241-3769 Wiring Gp-Console
08***30Cable As-Chassis1
13***89Clip; (Ladder)2
14***22Nut; (M5x0.8-Thd)1
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238-8408 Wiring Gp-Console -Adjustable Gauge Undercarriage
09***62Washer; (Hard) (3.4x7x0.8mm Thk)4
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
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239-8553 Wiring Gp-Engine
08***77Lamp Group-Dome; (12-Volt)1
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)1
21***54Lamp; (12-Volt)1
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241-3723 Wiring Gp-Lighting -Cab
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)1
24***02Lamp Group-Flood; -Canopy1
24***23Wiring Group-Lighting; -Cab1
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241-3724 Wiring Gp-Lighting -Canopy
24***24Wiring Group-Lighting; -Canopy1
24***53Motor Group-Travel2
27***11Kit-Seal; (Travel Motor)1
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Engine Arrangement
239-8555 Engine Ar
23***55Engine Ar1
24***19Mounting Group-Engine1
24***28Radiator & Mounting Group1
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303-2860 Engine Ar-Primary
22***64Cylinder Block Group1
22***65Piston & Rod Group3
22***68Crankshaft Group1
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243-7063 Engine Ar-Primary
22***64Cylinder Block Group1
22***65Piston & Rod Group3
22***68Crankshaft Group1
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238-6818 Installation Ar-Engine
23***18Installation Ar-Engine1
24***19Mounting Group-Engine1
24***28Radiator & Mounting Group1
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Frame And Body
239-8563 Door Gp-Access -Engine Compartment
11***17Washer; (10.5x30x2.5-mm Thk)1
13***55Spacer; (10x20x7-mm Thk)1
13***40Pin As1
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230-5711 Frame Gp-Swing
09***24Plug-Button1
09***70Bolt-Socket Hd; (M12 X 1.75 X 45)1
11***10Grommet1
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239-8549 Frame Gp-Upper
23***49Frame Group-Upper1
25***96Insulation1
25***50Washer; (5x38-mm Dia)2
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283-4682 Insulation Gp-Sound Suppr
14***20Connector As4
25***90Hose As1
27***66Hose As1
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269-4620 Insulation Gp-Sound Suppr
20***37Support3
20***38Retainer3
25***39Insulation1
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254-6698 Insulation Gp-Sound Suppr
25***98Insulation Group-Sound Suppr1
25***92Insulation1
25***93Insulation1
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256-4591 Insulation Gp-Sound Suppr
25***91Insulation Group-Sound Suppr1
25***93Insulation1
26***14Insulation1
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283-1331 Insulation Gp-Sound Suppr
28***10Insulation1
28***11Insulation1
28***12Insulation1
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239-8561 Lines Gp-Grease
23***61Lines Group-Grease1
24***51Frame As-Undercarriage1
24***53Nut-Special; (M8x1.25-Thd)15
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Fuel System
239-8569 Control Gp-Governor
11***01Bowl As-Water Collection1
11***18Ring-Retaining1
11***19Nut1
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144-9962 Filter Gp-Water Sep & Fuel
09***74Nut; (M8x1.25-Thd)1
14***62Filter Group-Water Sep & Fuel1
19***61Washer1
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265-7849 Governor Gp
08***38Sleeve; (11x20x9mm Thk)1
14***62Filter Group-Water Sep & Fuel1
15***75Connector2
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240-3232 Lines Gp-Fuel
13***17Gasket3
13***18Gasket3
19***72Clip4
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265-7848 Lines Gp-Fuel
19***52Key1
22***32Bearing1
22***20Shaft1
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265-7847 Pump Gp-Fuel Injection
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)2
21***44Cap As-Filler; (Fuel)1
24***20Tank Group-Fuel1
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239-8551 Tank & Mtg Gp-Fuel
21***06Plug As; (Fuel Tank Drain)1
23***51Tank & Mtg Group-Fuel1
24***92Tank As-Fuel1
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244-2020 Tank Gp-Fuel
10***12Seal; (Interface)1
12***72Switch As-Ball; (Load Limit)2
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)1
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Hydraulic System
240-3237 Cooler Gp-Hydraulic Oil
14***80Seal-Lip Type1
14***81Seal-U-Cup1
14***82Ring-Wear1
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231-1209 Cylinder Gp-Blade
14***80Seal-Lip Type1
14***81Seal-U-Cup1
14***82Ring-Wear1
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231-1208 Cylinder Gp-Boom -Swing
09***45Seal-O-Ring1
14***80Seal-Lip Type1
14***81Seal-U-Cup1
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231-1207 Cylinder Gp-Boom
14***80Seal-Lip Type1
14***81Seal-U-Cup1
14***82Ring-Wear1
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226-9956 Cylinder Gp-Bucket
14***77Seal-U-Cup1
14***92Seal-Lip Type1
14***85Seal-Piston1
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231-1206 Cylinder Gp-Stick
09***45Seal-O-Ring1
09***07Seal-O-Ring (Id=43.70mm)1
14***80Seal-Lip Type1
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248-2593 Cylinder Gp-Undercarriage
24***93Cylinder Group-Undercarriage1
26***37Filter Element-Oil; (Hydraulic Oil)1
26***38Cap As1
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241-4083 Filter Gp-Oil -Hydraulic
22***92Strainer As; (Engine Oil)1
22***93Nut1
22***94Filter Element As-Engine Oil; (Engine)1
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238-2633 Hydraulic Ar
22***86Lines Group-Travel Motor1
23***33Hydraulic Ar1
24***79Lines Group-Swing Motor1
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238-2813 Hydraulic Ar
22***86Lines Group-Travel Motor1
22***87Lines Group-Blade1
22***90Lines Group-Boom1
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238-6825 Hydraulic Ar
22***88Lines Group-Travel Motor1
23***05Lines Group-Undercarriage Cyl; -Adjustable Gauge1
23***25Hydraulic Ar1
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238-6430 Hydraulic Ar
22***88Lines Group-Travel Motor1
22***90Lines Group-Boom1
22***97Lines Group-Bucket1
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243-0588 Lines Gp-Auxiliary Hydraulic -Long Stick
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)1
14***40Adapter; (Straight) (-8 Orb X -8 Orfs)1
14***42Connector Group1
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243-0586 Lines Gp-Auxiliary Hydraulic -Short Stick
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)1
14***40Adapter; (Straight) (-8 Orb X -8 Orfs)1
14***42Connector Group1
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243-0587 Lines Gp-Auxiliary Hydraulic -Long Stick, 1-Way
14***07Plug; (Hex Head) (-6 Orb) (Current) (16***35 Friction Disc Interchangeable With 11***47) (Use All Of One Part Number)1
15***96Fitting As; (Quick Disconnect, Male)(Quick Disconnect)1
15***97Fitting As; (Quick Disconnect, Female)1
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242-5020 Lines Gp-Auxiliary Hydraulic -Standard Stick, 1-Way
14***07Plug; (Hex Head) (-6 Orb) (Current) (16***35 Friction Disc Interchangeable With 11***47) (Use All Of One Part Number)1
15***96Fitting As; (Quick Disconnect, Male)(Quick Disconnect)1
15***97Fitting As; (Quick Disconnect, Female)1
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245-6337 Lines Gp-Blade -Adjustable Gauge Undercarriage
14***16Connector Group1
14***25Connector As.2
15***24Hex Head Plug; (-4sae) (D6r Iii)1
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224-9287 Lines Gp-Blade
14***25Connector As.2
14***68Elbow Group2
22***87Lines Group-Blade1
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224-9290 Lines Gp-Boom
14***66Hose As1
14***25Connector As.1
14***38Adapter, -6 Orb / Orfs X-Long1
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145-8889 Lines Gp-Boom Cylinder
14***66Hose As1
14***89Lines Group-Boom Cylinder1
14***25Connector As.1
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224-9297 Lines Gp-Bucket
14***25Connector As.2
14***51Elbow Group1
22***97Lines Group-Bucket1
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281-3182 Lines Gp-Bucket -2nd Auxiliary, Long Stick
08***02Bulkhead Adaptor1
11***61Seal Kit; (Includes Seals, Thrust Ring, Stem And Connectors)1
12***78Locknut; (M6x1-Thd)1
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232-1568 Lines Gp-Bucket -Long Stick
14***25Connector As.2
14***51Elbow Group1
23***76Hose As1
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281-3180 Lines Gp-Bucket -2nd Auxiliary
08***02Bulkhead Adaptor1
11***61Seal Kit; (Includes Seals, Thrust Ring, Stem And Connectors)1
12***78Locknut; (M6x1-Thd)1
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266-8339 Lines Gp-Front
14***25Connector As.9
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)1
14***78Elbow, 90°,-6 Orb /-6 Orfs; (90°) (-6 Orbx-6orfs)1
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224-9293 Lines Gp-Load Control Valve -Boom
13***60Spacer; (11x19x10-mm Thk)2
13***07Strap; (Cable)3
14***16Connector Group1
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241-4191 Lines Gp-Pilot -Control Pattern Change
09***27Setscrew-Socket; (M4x0.7x10-mm)1
13***13Band; (Marker) (Gray, P)2
13***07Strap; (Cable)1
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243-0592 Lines Gp-Pilot
14***26Adapter; (Straight) (-4 Orb X -4 Orfs)1
14***68Elbow Group2
14***69Adapter; (90° Elbow Orfs/Orb)2
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241-4076 Lines Gp-Pilot -Joystick, Main Control Valve
13***13Band; (Marker) (Gray, P)2
13***07Strap; (Cable)1
14***16Connector Group7
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262-4343 Lines Gp-Pump
08***45Tee1
09***25Clip1
10***96Bolt-Socket Head; (M10x1.5x50-mm)4
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263-8775 Lines Gp-Return
13***55Hose; (8-cm)0
14***53Hose; (272.2-cm)0
14***42Connector Group1
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230-5719 Lines Gp-Stick
14***25Connector As.2
23***19Lines Group-Stick1
23***77Hose As1
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241-4079 Lines Gp-Swing Motor
12***05Hose As1
14***94Hose As1
14***25Connector As.5
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243-0619 Lines Gp-Swing Motor
14***94Hose As1
14***25Connector As.7
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)7
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224-9288 Lines Gp-Travel Motor
14***25Connector As.2
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)8
14***69Adapter; (90° Elbow Orfs/Orb)4
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224-9286 Lines Gp-Travel Motor
14***25Connector As.2
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)4
14***53Elbow, 45,-6 Orb To-6 Orfs-Drum Clutch Port4
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230-3405 Lines Gp-Undercarriage Cyl -Adjustable Gauge
14***16Connector Group1
14***25Connector As.2
14***32Tee, -4; (-4)1
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264-8822 Manifold & Mtg Gp-Control -Hyd Lockout, Speed Select
09***68Bolt-Socket Head; (M5x0.8x8-mm)4
24***32Manifold Group-Control; (Hydraulic Lockout, Speed Select)1
25***30Kit-Seal; (Valve)1
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288-9885 Manifold Gp-Control -Hyd Lockout, Speed Select
09***68Bolt-Socket Head; (M5x0.8x8-mm)4
25***30Kit-Seal; (Valve)1
27***83Valve Group-Solenoid; (Hydraulic Lockout, Speed Select)1
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241-4078 Motor & Mtg Gp-Swing
24***78Motor & Mtg Group-Swing1
24***64Motor Group-Swing1
27***09Valve As-Relief; (Swing Cushion)2
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241-4085 Pump & Mtg Gp-Main Hydraulic
09***67Setscrew-Socket; (M10x1.5-Thd)2
22***22Housing1
24***85Pump & Mtg Group-Main Hydraulic1
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241-7971 Pump Gp-Main Hydraulic
16***22Coupling1
16***23Collar1
22***13Kit-Seal; (Main Hydraulic Pump)1
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230-7445 Swivel Gp
23***45Swivel Group1
23***57Kit-Seal; (Swivel)1
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237-4075 Swivel Gp
263-3812 Tank & Mtg Gp-Hydraulic
11***14Hose As1
13***79Washer; (11x32x3-mm Thk)4
16***34Plug As1
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317-8269 Tank Gp-Hydraulic
09***03Seal-O-Ring (Id=44.40mm)1
14***37Cap As-Filler; (Hydraulic Tank)1
14***18Connector As2
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263-3811 Tank Gp-Hydraulic
14***18Connector As1
14***25Connector As.1
16***34Plug As1
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241-4081 Valve & Mtg Gp-Bank
15***81Pin-Clevis2
24***81Valve & Mtg Group-Bank1
24***84Valve Group-Bank1
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242-8184 Valve Gp-Bank
09***78Seal-O-Ring (Id=9.80mm)1
09***82Seal-O-Ring (Id=13.80mm)1
13***75Seal4
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152-8179 Valve Gp-Load Control -Boom
15***79Valve Group-Load Control; -Blade1
15***47Valve1
15***54Block1
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164-2274 Valve Gp-Selector -2-Way
11***83Pin-Spring1
16***74Valve Group-Selector; -Joystick Pattern1
16***76Kit-Seal; (Select Valve)1
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Implements
224-9239 Boom Ar
22***39Boom Ar1
22***40Boom Group1
23***11Frame Group-Swing1
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224-9240 Boom Gp
13***67Shim; (1-mm Thk)2
13***68Shim; (0.5-mm Thk)2
16***78Cover-Boom Rod1
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226-2764 Linkage Gp-Bucket -With Lifting Eye
13***83Shim; (0.5-mm Thk)4
13***84Shim; (1-mm Thk)4
16***20Pin2
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226-2765 Linkage Gp-Bucket
13***83Shim; (0.5-mm Thk)4
13***84Shim; (1-mm Thk)4
16***20Pin2
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245-2125 Stick Ar-Hoe
22***96Stick Group-Hoe1
22***56Cylinder Group-Bucket1
23***19Lines Group-Stick1
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245-2126 Stick Ar-Hoe -Long
22***01Stick Group-Hoe; -Long1
22***56Cylinder Group-Bucket1
23***19Lines Group-Stick1
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224-9296 Stick Gp-Hoe
13***67Shim; (1-mm Thk)2
13***68Shim; (0.5-mm Thk)2
17***61Plug-Protective1
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224-9301 Stick Gp-Hoe -Long
13***67Shim; (1-mm Thk)2
13***68Shim; (0.5-mm Thk)2
17***61Plug-Protective1
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Lubrication System
265-7844 Filter Gp-Engine Oil -Engine
11***03Bolt; (M6x1x55-mm)4
19***67Spacer2
26***44Filter Group-Engine Oil; -Engine1
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Machine Arrangement
238-2632 Chassis Ar
243-0225 Chassis Ar
23***49Frame Group-Upper1
23***51Tank & Mtg Group-Fuel1
23***57Plate & Film Group1
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243-0590 Chassis Ar
23***08Wiring Group-Console; -Adjustable Gauge Undercarriage1
23***49Frame Group-Upper1
23***51Tank & Mtg Group-Fuel1
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242-9687 Chassis Ar
23***49Frame Group-Upper1
23***51Tank & Mtg Group-Fuel1
23***57Plate & Film Group1
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238-1763 Common Ar
22***25Undercarriage Ar1
22***39Boom Ar1
23***63Common Ar1
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238-6855 Common Ar
22***26Undercarriage Ar1
22***39Boom Ar1
23***43Operator Ar1
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Operator Station
247-5741 Accessory Gp-Cab
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
10***44Fan Group-Circulating1
18***35Pin-Connector; (16-Ga To 18-Ga)2
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238-1764 Cab Ar
23***64Cab Ar1
24***17Washer Group-Window1
24***32Mounting Group-Cab1
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243-0433 Cab Gp
24***23Wiring Group-Lighting; -Cab1
24***12Door Group-Cab1
24***13Cab Group1
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246-4820 Cab Gp
24***12Door Group-Cab1
24***13Cab Group1
24***20Cab Group1
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243-0413 Cab Gp
11***84Bumper2
11***29Washer; (6.6x22x2-mm Thk)2
12***78Locknut; (M6x1-Thd)10
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238-1765 Canopy Ar-Open Rops
23***65Canopy Ar-Open Rops1
24***34Mounting Group-Platform1
24***14Support Group-Seat1
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260-8422 Canopy Gp-Open Rops
12***11Adhesive; (Urethane)1
14***68Plug4
23***36Plug4
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260-8421 Canopy Gp-Open Rops
21***68Cover1
24***24Wiring Group-Lighting; -Canopy1
26***21Canopy Group-Open Rops1
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248-2802 Control & Mtg Gp-Joystick
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
19***12Valve-Pilot; (Joystick)1
24***02Control & Mtg Group-Joystick1
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243-0214 Control Gp-Blade
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
24***14Control Group-Blade1
24***59Cable As1
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239-8567 Control Gp-Hydraulic Hand -With Auxiliary Pedals-Auxiliary, Swing Boom, Travel
06***51Shim .7620 mm(.030 In.)Thick2
09***19Ring-Retaining1
09***32Knob; (Lh Travel Lever)1
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243-0412 Door Gp-Cab
11***27Screw-Machine; (M6x1x30-mm)2
24***12Door Group-Cab1
25***11Seal1
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269-8964 Duct Gp-Cab Air -Rh
10***91Screw; (Flat Head) (No.6-20x0.5in)2
10***53Housing; (Center)1
10***54Housing; (End)2
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242-9685 Duct Gp-Cab Air
24***85Duct Group-Cab Air1
25***17Louver As2
25***31Duct As-Air1
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243-0249 Filter Gp-Cab Air
24***49Filter Group-Cab Air1
24***58Filter Element As-Cab Air1
25***58Duct1
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260-1650 Guard Gp-Cab
25***87Guard As1
26***50Guard Group-Cab1
8T***21Washer-Hard; (11x21x2.5-mm Thk)(M10x1.50x30mm)4
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242-9681 Guard Gp-Canopy
24***81Guard Group-Canopy1
25***87Guard As1
26***49Tube As1
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242-9680 Guard Gp-Window
24***80Guard Group-Window1
24***88Glass As-Window1
26***49Tube As1
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255-4092 Heater Ar-Cab
24***86Heater Group-Cab1
24***85Duct Group-Cab Air1
24***16Lines Group-Heater1
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242-1286 Heater Gp-Cab
08***89Grommet1
17***24Locknut; (M5x0.8-Thd)2
20***01Washer-Hard; (5.3x10x1-mm Thk)2
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249-7743 Heater Gp-Cab -Without Duct
20***98Knob-Control; (Temperature Select)1
23***83Converter1
23***52Nut; (7/16-28-Thd)1
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264-2967 Installation Gp-Radio -Nacd
18***44Cable-Lock1
26***81Radio1
26***67Installation Group-Radio; -Nacd1
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241-3738 Installation Gp-Radio -Eame
18***44Cable-Lock1
24***38Installation Group-Radio; -Eame1
26***81Radio1
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243-0216 Lines Gp-Heater
13***41Grommet1
16***45Sleeve-Abrasion; (62.25in)0
1P***78Clamp; (Hose)4
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145-8893 Literature Gp
12***58Lanyard1
14***93Literature Group1
19***09Key; (Corporate)(Start Switch)2
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236-1527 Mirror Gp-Rear View
13***66Mirror Group-Rear View1
14***71Clamp; (Top)(Top)1
14***72Clamp; (Bottom)(Bottom)1
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236-1533 Mirror Gp-Rear View
13***66Mirror Group-Rear View1
14***71Clamp; (Top)(Top)1
14***72Clamp; (Bottom)(Bottom)1
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310-4265 Mirror Gp-Rear View
13***66Mirror Group-Rear View1
14***71Clamp; (Top)(Top)1
14***72Clamp; (Bottom)(Bottom)1
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330-5032 Motor Gp-Window Wiper
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
18***35Pin-Connector; (16-Ga To 18-Ga)4
26***23Cap-Wiper1
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146-6431 Motor Gp-Window Wiper -12-Volt
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
14***31Motor Group-Window Wiper; -12-Volt1
18***35Pin-Connector; (16-Ga To 18-Ga)4
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210-2353 Motor Gp-Window Wiper
14***31Motor Group-Window Wiper; -12-Volt1
20***60Cover1
21***53Motor Group-Window Wiper1
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330-5043 Motor Gp-Window Wiper
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
18***35Pin-Connector; (16-Ga To 18-Ga)4
20***60Cover1
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243-0232 Mounting Gp-Cab
09***65Spacer; (17x40x3-mm Thk)2
14***95Mount As4
24***32Mounting Group-Cab1
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243-0234 Mounting Gp-Platform
24***34Mounting Group-Platform1
24***80Handrail As1
26***05Bolt; (M14x2x50-mm)4
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260-1657 Mounting Gp-Radio
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
12***07Screw-Hex Socket; (M4x0.7x20-mm)14
14***59Fuse; (5-Ampere)1
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310-4995 Mounting Gp-Radio
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
12***07Screw-Hex Socket; (M4x0.7x20-mm)14
14***59Fuse; (5-Ampere)1
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264-3384 Mounting Gp-Radio
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
12***07Screw-Hex Socket; (M4x0.7x20-mm)14
14***59Fuse; (5-Ampere)1
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238-2643 Operator Ar
14***93Literature Group1
23***43Operator Ar1
23***65Platform Group-Operator1
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242-9641 Operator Ar
14***93Literature Group1
23***65Platform Group-Operator1
23***67Control Group-Hydraulic Hand; -With Auxiliary Pedals-Auxiliary, Swing Boom, Travel1
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239-8565 Platform Gp-Operator
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)8
13***85Screw; (M6x1-Thd)3
15***81Armrest As2
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277-5024 Seal Gp-Cab
25***76Seal1
25***77Seal1
25***78Seal1
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280-2457 Seat Belt Gp
28***57Seat Belt Group1
7X***46Washer-Hard; (12x25.5x2-mm Thk)2
8T***81Bolt; (7/16-20x1-In)2
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242-9642 Seat Belt Gp -Retractable, 2-In
1L***80Bolt; (7/16-20x1.5-In)1
24***42Seat Belt Group; -Retractable, 2-In1
26***85Spacer; (11.5x19x7-mm Thk)1
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242-9640 Seat Belt Gp -2-In
1L***80Bolt; (7/16-20x1.5-In)1
24***40Seat Belt Group; -2-In1
26***85Spacer; (11.5x19x7-mm Thk)1
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220-2640 Seat Belt Gp
22***40Seat Belt Group1
7X***46Washer-Hard; (12x25.5x2-mm Thk)3
8C***92Bolt; (Locking) (M12x1.75x30mm)2
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242-9638 Seat Gp-Suspension -Vinyl
24***38Seat Group-Suspension; -Vinyl1
25***52Kit-Seat; (Seat Cushion)1
25***53Kit-Seat; (Seat Cushion, Back)1
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246-9241 Seat Gp-Suspension -Cloth, High Back
24***41Seat Group-Suspension; -Cloth, High Back1
25***54Kit-Seat; (Cover, Suspension)1
25***69Kit-Seat; (Seat Cushion)1
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242-9639 Seat Gp-Suspension -Cloth
24***39Seat Group-Suspension; -Cloth1
25***54Kit-Seat; (Cover, Suspension)1
25***69Kit-Seat; (Seat Cushion)1
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249-9114 Support Gp-Seat
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)1
13***07Strap; (Cable)2
17***32Bolt-Hex Head; (M4x0.7x16mm)2
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249-9115 Support Gp-Seat
17***32Bolt-Hex Head; (M4x0.7x16mm)2
22***92Lock As1
22***21Cam1
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322-4955 Tank Gp-Window Washer
12***72Seal; (135-cm)0
20***12Hammer Group1
21***89Screw; (M4x19-mm)2
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212-9334 Tank Gp-Window Washer
21***34Tank Group-Window Washer1
21***35Grommet; (Bottle)1
21***36Pump As1
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243-0423 Trim Gp-Cab
14***95Hose; (650-cm Each)0
21***34Tank Group-Window Washer1
24***23Trim Group-Cab1
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243-0217 Washer Gp-Window
14***95Hose; (650-cm Each)0
24***17Washer Group-Window1
31***80Bracket As1
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292-0448 Window Gp-Cab -Front
14***87Cushion1
15***76Knob1
15***68Catch As1
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261-2712 Window Gp-Cab -Front
26***12Window Group-Cab; -Front1
29***49Block2
29***50Latch As1
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261-2713 Window Gp-Sliding
13***94Nozzle As-Washer1
14***95Hose; (650-cm Each)0
14***46Clip1
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243-0415 Wiper Gp-Window
22***20Film-Warning; (Hot Surface)1
22***46Film-Warning; (No Ether Spray/Air Intk, Intl)1
22***22Film; (Warning) (Seat Belt) (Cab Post)1
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Power Train
241-4077 Motor & Mtg Gp-Travel
24***77Motor & Mtg Group-Travel2
24***78Motor & Mtg Group-Swing1
24***40Sprocket Group1
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238-6820 Power Train Ar
10***84Bolt-Socket Head; (M10x1.5x25-mm)18
13***04Sprocket; (19-Teeth)2
23***20Power Train Ar1
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243-5340 Sprocket Gp
12***43Seal; (70-cm)0
17***93Bumper; (Rubber)2
22***40Latch As1
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Service Equipment And Supplies
264-7999 Film Gp
19***68Coupler-Grease1
19***69Hose As1
26***99Film Group1
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245-3345 Film Gp
12***73Film-Identification; (Caterpillar)1
15***22Film; (Lh)(Cat)1
15***23Film; (Rh)(Cat)1
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245-3349 Film Gp
23***64Film-Identification; (One)1
23***65Film-Identification; (Two)1
23***66Film-Identification; (Three)1
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242-9611 Film Gp -International
22***45Film-Warning; (Do Not Use Ether, U.S)1
22***21Film-Warning; (Seat Belt)1
22***13Film; (Warning) (Jump Start) (Inside Of Lh Battery Box Cover)1
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242-9614 Film Gp -U. S.
12***73Film-Identification; (Caterpillar)1
15***22Film; (Lh)(Cat)1
15***23Film; (Rh)(Cat)1
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8f-9866 Grease Gun Gp
15***96Film-Notice; (Lift Eye Location)2
15***36Film-Warning; (Read Operation Manual)2
8F***66Grease Gun As1
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175-0286 Plate & Film Gp -Quick Coupler
13***58Film; (Identification) (On Radiator Filler Cap) (On Near Of Radiator Filler Cap)1
15***96Film-Notice; (Lift Eye Location)2
15***99Film-Instruction; (Console)1
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239-8557 Plate & Film Gp
15***27Tool Group-Hand1
18***44Cable-Lock1
23***57Plate & Film Group1
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242-9679 Tool Gp-Hand
Undercarriage
224-9235 Frame Gp-Undercarriage -Adjustable Gauge
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)3
21***17Bearing As-Swing1
22***35Frame Group-Undercarriage; -Adjustable Gauge1
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224-9227 Frame Gp-Undercarriage
22***27Frame Group-Undercarriage1
24***63Frame Group-Undercarriage1
24***53Nut-Special; (M8x1.25-Thd)15
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234-9371 Gear & Bearing Gp-Swing
14***94Bolt; (M8x1.25x55-mm)2
20***51Support1
22***49Idler Group-Front1
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224-2560 Idler Gp-Front
224-9233 Idler Gp-Front
13***70Shaft1
13***64Seal2
1B***67Ball Bearing2
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226-4049 Idler Gp-Front
22***49Idler Group-Front1
23***66Roller As-Track6
8T***39Capscrew; (Hex Hd) (M12 X 1.75 X 30l Gr 10.9)12
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224-9229 Roller Gp-Track-Center Flange
09***97Seal-O-Ring (Id=29.70mm)1
13***47Nut; (M20x1.5-Thd)1
13***48Ring-Backup1
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232-7685 Spring Gp-Recoil
23***11Track As2
23***85Spring Group-Recoil1
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224-9322 Track Gp -Rubber
22***27Frame Group-Undercarriage1
22***29Roller Group-Track-Center Flange1
22***33Idler Group-Front1
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242-9676 Undercarriage Ar
22***29Roller Group-Track-Center Flange1
22***33Idler Group-Front1
22***35Frame Group-Undercarriage; -Adjustable Gauge1
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224-9226 Undercarriage Ar
22***26Undercarriage Ar1
22***27Frame Group-Undercarriage1
22***29Roller Group-Track-Center Flange1
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224-9225 Undercarriage Ar
22***25Undercarriage Ar1
22***29Roller Group-Track-Center Flange1
22***33Idler Group-Front1
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242-9677 Undercarriage Ar
24***77Undercarriage Ar1
24***11Plate As1
24***12Plate As1
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Work Tools
236-7184 Adapter-Tip -2-Strap, Center
238-3204 Adapter-Tip -2-Strap, Center
243-0240 Blade & Mounting Gp
13***93Cover1
22***69Blade & Bearing As1
22***48Pin As4
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243-0241 Blade & Mounting Gp
13***93Cover1
22***44Blade & Bearing As1
22***51Blade As1
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243-0245 Blade Ar
22***87Lines Group-Blade1
23***09Cylinder Group-Blade1
24***40Blade & Mounting Group1
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243-0246 Blade Ar
23***09Cylinder Group-Blade1
24***41Blade & Mounting Group1
24***46Blade Ar1
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147-1020 Bucket Ar-General Purpose
14***20Bucket Ar-General Purpose1
14***32Tooth Group-Uni3
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190-7387 Bucket Ar-General Purpose
14***32Tooth Group-Uni3
19***87Bucket Ar-General Purpose1
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147-1018 Bucket Ar-General Purpose
14***18Bucket Ar-General Purpose1
14***32Tooth Group-Uni3
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147-1026 Bucket Ar-General Purpose
14***26Bucket Ar-General Purpose1
14***32Tooth Group-Uni4
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147-1023 Bucket Ar-General Purpose
14***23Bucket Ar-General Purpose1
14***32Tooth Group-Uni4
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317-0934 Bucket Ar-General Purpose
14***18Bucket Ar-General Purpose1
14***31Bucket As-Ditch Cleaning1
19***87Bucket Ar-General Purpose1
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147-1014 Bucket Ar-General Purpose
14***14Bucket Ar-General Purpose1
14***32Tooth Group-Uni3
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147-1029 Bucket As-Ditch Cleaning
14***29Bucket As-Ditch Cleaning1
15***04Plate-Instruction; (Bucket Specifications)1
16***89Tack-Fastener4
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147-1031 Bucket As-Ditch Cleaning
14***31Bucket As-Ditch Cleaning1
15***04Plate-Instruction; (Bucket Specifications)1
16***89Tack-Fastener4
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187-8802 Bucket Gp-Excavation
14***93Bolt; (M12x1.75x40-mm)6
18***02Bucket Group-Excavation1
23***99Tooth3
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187-8803 Bucket Gp-Excavation
14***93Bolt; (M12x1.75x40-mm)8
18***03Bucket Group-Excavation1
23***99Tooth4
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187-8804 Bucket Gp-Excavation
14***93Bolt; (M12x1.75x40-mm)8
18***04Bucket Group-Excavation1
23***99Tooth4
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187-8801 Bucket Gp-Excavation
14***93Bolt; (M12x1.75x40-mm)6
18***01Bucket Group-Excavation1
23***99Tooth3
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172-1155 Coupler Ar-Quick
17***55Coupler Ar-Quick; -Mechanical1
17***43Lock Group-Quick Coupler; -Mechanical1
17***86Plate & Film Group; -Quick Coupler1
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240-4044 Coupler Gp-Quick
09***28Fitting-Grease1
09***37Pin; (Spring)2
24***44Coupler Group-Quick1
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240-4043 Coupler Gp-Quick
16***45Pin2
24***43Coupler Group-Quick1
24***44Coupler Group-Quick1
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233-2951 Coupler Gp-Quick
16***45Pin2
17***30Shim; (1-mm Thk)4
17***31Shim; (0.5-mm Thk)4
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233-2950 Coupler Gp-Quick
15***96Pin As1
16***73Shim; (0.3-mm Thk)4
23***50Coupler Group-Quick1
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246-0149 Lock Gp-Pin -Quick Coupler
09***81Pin-Spring1
20***82Knob1
21***42Seal-O-Ring2
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172-8743 Lock Gp-Quick Coupler -Mechanical
17***43Lock Group-Quick Coupler; -Mechanical1
17***23Wedge1
17***24Spindle1
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154-2672 Mounting Gp-Bucket
15***72Mounting Group-Bucket1
16***20Pin2
22***47Pin As2
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237-4260 Pin & Follower Gp-Coupler
23***60Pin & Follower Group-Coupler1
24***49Lock Group-Pin; -Quick Coupler1
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147-1032 Tooth Gp-Uni
13***80Tooth-Uni1
14***32Tooth Group-Uni1
8T***83Bolt (M12x1.75x40mm); (M12x1.75x40-mm)2
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Frequently asked questions

What engine powers the Caterpillar 301.8C?

The machine is equipped with a Mitsubishi L3NE NA Diesel engine, providing approximately 19 hp (14 kW) of net power.

What is the operating weight of this model?

The Caterpillar 301.8C has an operating weight of approximately 1.78 tonnes (3,936 lbs).

What replaced the 301.8C?

Specific successor model information for the 301.8C is not documented in the provided source text.

What 301.8C owners discuss

What are the known hydraulic performance characteristics of the 301.8C?
The machine utilizes a variable displacement pump designed for efficient hydraulics. Operators have reported instances of the machine slowing down after approximately one hour of work, even following hydraulic pump replacement; check for related issues if power loss occurs after 15 minutes of usage.
What engine is used in the Caterpillar 301.8C and what fuel requirements apply?
The 301.8C is equipped with a Mitsubishi L3NE NA Diesel engine providing 19 hp net power. Engines require ULSD (ultra-low sulfur diesel) with 15 ppm sulfur or less, which can be blended with up to 20% biodiesel FAME, 100% renewable diesel, HVO, or GTL fuels.
What undercarriage features are standard on the 301.8C model?
The 301.8C comes standard with an expandable undercarriage and rubber tracks. The track width is 230 mm (9.06 in).
What common electrical or display panel issues are reported by users?
Users have reported instances of a blinking five-digit number appearing on the display panel after startup that does not clear. Additionally, some operators have noted difficulty identifying specific instrument panel lights related to dozer blade functions.
What maintenance access features are available for servicing this machine?
Routine check points are accessible at ground level through side doors. A large, swing-out rear door provides access to the engine enclosure, including the air filter, engine oil fill, radiator reservoir tank, and fuel/water separator. The cab features a unique tilt-up design to reach additional service areas.
What should be checked when purchasing a used 301.8C?
Verify the serial number prefix (e.g., JSB) as internal configurations vary significantly between series. Inspect the hydraulic cylinders for defects and check the dozer blade for any pin holes that would indicate if extensions can be inserted for width adjustment. Have your dealer verify the exact machine build date and configuration via the official SIS database.

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

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