Komatsu PC03-2-K(S/N 15001-UP (FOR U.S.A.))
Komatsuhydraulic excavatorsmall ( - pc90)

Komatsu PC03-2-K(S/N 15001-UP (FOR U.S.A.))

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu PC03-2-K is a mini excavator manufactured from 1997 to 1998, designed for the U.S. market. It weighs approximately 0.82 tons (1,808 lb) and features a transport width of 0.8 meters (2 ft 7.5 in). The machine utilizes a compact diesel engine and hydraulic system typical of its class. Standard configurations include a 1357 mm (4 ft 5 in) boom and a 684 mm (2 ft 3 in) stick. It succeeded earlier PC03 series models and was followed by the PC03-2F generation. The PC03-2-K was offered with various attachment options, including quick hitches, to maximize utility in tight spaces.

Across the PC03 series, Komatsu refined the hydraulic efficiency and engine durability to meet evolving U.S. emissions and performance standards. The PC03-2-K remains relevant in the used and parts market due to its simple mechanical design and widespread use in landscaping and utility work. Its compact size allows access to confined areas where larger machines cannot operate. Parts availability for the undercarriage, hydraulic pumps, and engine components ensures continued serviceability. The machine's legacy lies in its role as a reliable entry-level excavator that established Komatsu's footprint in the mini-excavator segment.

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.

Komatsu PC03-2-K(S/N 15001-UP (FOR U.S.A.)) specifications

Engine

Engine Model1D84
Gross Power7.4 hp @ 2800 rpm
Displacement23.7 cu in

Weights

Operating Weight1918.1 lb
Ground Pressure3.4 psi

Dimensions

Transport Length9.22 ft
Transport Width2.63 ft
Tail Swing Radius2.53 ft
Track Shoe Width7.09 in
Ground Clearance0.56 ft
Track Length on Ground2.96 ft

Performance

Max Digging Depth4.93 ft
Max Reach at Ground9.06 ft
Max Dump Height6.53 ft
Max Cutting Height9.16 ft
Swing Speed7.5 rpm
Travel Speed1.19 mph

Service capacities (summary)

Fuel Tank Capacity3.5 gal
Hydraulic System Fluid Capacity3.2 gal

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

Komatsu PC03-2-K(S/N 15001-UP (FOR U.S.A.)) maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition.
  • Check hydraulic fluid level via sight glass.
  • Check coolant level and ensure cap is secure.
  • Drain water from fuel separator.
  • Check track tension and inspect shoe/pad condition.
  • Inspect hydraulic hoses for cracks or leaks.
  • Check radiator and oil cooler fins for debris.
  • Verify ROPS/FOPS integrity and seat belt function.
  • Test horn, backup alarm, and lights.
  • Test all hydraulic controls for smooth response.
Every 250 h
  • Change engine oil and filter.
  • Grease all points on boom, stick, bucket, and swing bearing.
  • Check air filter restriction indicator.
  • Inspect belts, hoses, and clamps.
  • Check final drive oil level.
  • Check swing machinery oil level.
  • Visual inspection of undercarriage wear.
  • Check battery terminals and alternator function.
Every 500 h
  • Replace fuel filter.
  • Replace hydraulic return filter.
  • Perform KOWA hydraulic oil sample.
  • Test coolant SCA concentration.
  • Load test battery.
  • Detailed undercarriage wear measurement.
  • Inspect structural welds on boom and stick.
  • Check swing machinery oil level.
Every 1,000 h
  • Change engine oil and filter.
  • Clean or replace air filter outer element.
  • Change final drive oil (both sides).
  • Change swing machinery oil.
  • Inspect turbocharger.
  • Measure undercarriage wear.
  • Check structural welds on boom and stick.
  • Inspect hydraulic hoses and replace worn items.
Every 2,000 h
  • Change hydraulic system oil.
  • Flush and replace coolant.
  • Replace hydraulic return filter.
  • Replace fuel filter.
  • Comprehensive undercarriage inspection.
  • Inspect and replace worn belts and clamps.
  • Load test battery.
  • Inspect swing circle and undercarriage components.

Servicing the PC03-2-K(S/N 15001-UP (FOR U.S.A.)) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize KOWA fluid analysis at 500-hour intervals to monitor hydraulic pump wear metals and coolant condition. Check the hydraulic oil sight glass daily for level and clarity. Inspect the air filter restriction indicator before each shift to prevent engine intake issues. Monitor coolant SCA levels at 500 hours to ensure corrosion protection for the engine block. Track undercarriage wear measurements at 500 and 1000 hours to predict roller and sprocket replacement needs. Analyze fuel filter water separation results to detect fuel system contamination early.

Corrective & Common Repairs

Address hydraulic hose leaks immediately by inspecting high-pressure lines near the boom and stick cylinders. Replace worn track shoes and adjust tension to prevent derailment on uneven terrain. Repair or replace cracked boom or stick welds during structural inspections at 500 and 1000 hours. Fix hydraulic pump seal leaks by replacing shaft seals and O-rings during major service intervals. Replace worn swing bearing bolts and check for excessive play during the 1000-hour inspection. Repair electrical faults by checking the ECM connections and sensor wiring for corrosion or damage.

Overhaul & Rebuild Points

Rebuild the hydraulic pump at 4000 hours or when flow and pressure drop below specifications. Overhaul the engine at 8000 hours, replacing piston rings, valves, and bearings as needed. Rebuild the final drives when oil contamination exceeds limits or output torque decreases significantly. Replace the entire undercarriage group when link pitch elongation exceeds 3 percent or roller diameters are worn down. Rebuild the swing motor if hydraulic leakage or bearing noise indicates internal failure. Replace the turbocharger if excessive oil consumption or boost pressure loss occurs.

Seasonal & Environment Servicing

In cold weather, drain water from the fuel separator daily to prevent freezing. Use low-temperature hydraulic oil to ensure proper flow during startup. Inspect the cooling system for leaks and ensure the coolant mixture provides adequate freeze protection. In dusty environments, clean the air filter more frequently and check the pre-cleaner. In wet conditions, inspect the undercarriage for mud buildup that can accelerate wear. Protect electrical connectors from moisture ingress by applying dielectric grease. Store the machine in a dry location to prevent rust on exposed hydraulic cylinders.

PC03-2-K(S/N 15001-UP (FOR U.S.A.)) common service parts

Part numberPart
YM119255-55620Fuel Filter Ass'YCheck fitment →
YM114654-55710Filter,FuelCheck fitment →
YM171051-92760Wrench,Fuel Filter? Water SeparatorCheck fitment →
YM102103-55520O-Ring,(For Fuel Filter)Check fitment →
YM19632-55620Filter,FuelCheck fitment →

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

PC03-2-K(S/N 15001-UP (FOR U.S.A.)) attachments & work tools

Buckets

The Komatsu PC03-2 is a mini excavator with a maximum bucket capacity of 0.02 cubic meters (0.026 cubic yards). The machine features a standard boom length of 1357 mm (4 ft 5 in) and a stick length of 684 mm (2 ft 3 in). Pin-on mounting is standard for this class; quick coupler compatibility varies by configuration and series.

Hydraulic hammers

The PC03-2 is a 0.82-ton class mini excavator. It is compatible with hydraulic hammers in the 100–300 kg (220–660 lb) weight class. Specific breaker models require verification against the machine's hydraulic flow and pressure specifications.

Quick couplers

The Komatsu PC03-2 supports both mechanical and hydraulic quick hitch systems. Compatibility depends on the specific boom and stick configuration installed on the unit.

Thumbs/grapples

Thumb kits and grapples are available for the PC03-2 mini excavator. Attachment dimensions must be verified against the specific boom and stick lengths (1357 mm boom, 684 mm stick) to ensure proper reach and clearance.

Rippers

Ripper attachments are listed as available for the PC03-2 series. Specific ripper width and pin diameter requirements vary by configuration and series.

Hydraulic-kit notes

The PC03-2 is a mini excavator manufactured from 1997 to 1998. Hydraulic kit specifications, including pressure ratings and flow requirements, are not documented in the provided source text for this exact serial range. Verify with your dealer.

All PC03-2-K(S/N 15001-UP (FOR U.S.A.)) assemblies by section

Every catalogued assembly group for the Komatsu PC03-2-K(S/N 15001-UP (FOR U.S.A.)). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

2d68e-3a Engine S/N 00101-Up
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Air Cleaner (Forwerded Individually Parts)
YM***00Case1
YM***80Bolt,Wing1
YM***02Nut1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Air Intake Manifold
YM***82Bolt1
YM***50Manifold,Air Intake1
YM***62Bolt Plated2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Alternator (20a) (Inner Parts)
YM***00Stator Ass'Y1
YM***02Alternator A. (20a)1
YM***00Nut,Ball1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Alternator And Mounting (20a)(#00101-10055)
YM***02Bolt Plated1
YM***02Nut1
YM***52Screw1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Alternator And Mounting (20a)(#10056-)
YM***02Bolt Plated1
YM***02Nut1
YM***50Bolt1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Camshaft And Tappet
YM***00Rod,Push4
YM***00Tappet4
YM***50Retainer, Bearing1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Crankshaft
YM***00Gear,Crank1
YM***80Bolt1
YM***41Washer1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Cylinder Block
YM***30Thrust Metal Ass'Y2
YM***00Main Metal Ass'Y (Std)3
YM***00Plug2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Cylinder Block Accsessory
YM***50Oil Pressure Transmitter1
YM***20Plug,Drain(Without Oil Cooler Type)1
YM***70Gauge,Oil Level1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Cylinder Head
YM***00Screw10
YM***00Cotter8
YM***00Plug1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Drive Gear(#00101-10055)
YM***22Retainer, Idle Gear1
YM***00Ring, Snap1
YM***52Shaft,Idler Gear1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Drive Gear(#10056-)
YM***22Retainer, Idle Gear1
YM***10Cam Ass'Y1
YM***00Ring, Snap1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Electrical Parts (Forwerded Individually Parts)
YM***21Indicator, Charging1
YM***20Timer,Solenoid1
YM***10Relay,Stop Solenoid1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Exhaust Manifold
YM***10Gasket (Kit)1
YM***00Manifold,Exhaust1
YM***22Stud4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Flywheel And Flywheel Housing
YM***20Bolt Plated3
YM***20Parallel Pin2
YM***80Parallel Pin2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Fornt Hanger
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Front Cover
YM***51Cap, Lub. Oil Supply1
YM***40O-Ring,Drain Plug1
YM***40O-Ring (Kit)2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Fuel Feed Pump
YM***21Feed Pump Ass'Y1
YM***50Bolt, Pipe Joint2
YM***02Seal,Ring (Kit)4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Fuel Filter
YM***20Fuel Filter Ass'Y1
YM***40Lever1
YM***00O-Ring (Kit)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Fuel Injection Pump (Pump) (Inner Parts)
YM***00Washer,Spring1
YM***00Washer1
YM***02Screw1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Fuel Injection Pump And Piping
YM***10Pipe,No.11
YM***10Pipe,No.11
YM***50Shim Ass'Y (Kit)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Fuel Nozzle And Spill Hose
YM***40Spacer, Valve Stop1
YM***00Fuel Injection Valve, Assembly2
YM***80Nut1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Fuel Piping Joint
YM***00Bolt, Pipe Joint1
YM***10Filter,Fuel1
YM***02Seal,Ring (Kit)2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Gasket Kit
YM***31Gasket (Kit)1
YM***40O-Ring,Drain Plug1
YM***40O-Ring (Kit)2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Glow Plug
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Governor(#00101-10055)
YM***30Link? 88.6mm1
YM***00Pin, Cotter1
YM***00Retainer, Shaft1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Governor(#10056-)
YM***30Link? 88.6mm1
YM***00Pin, Cotter1
YM***00Retainer, Shaft1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Head Cover
YM***00Pipe,Breather1
YM***51Cap, Lub. Oil Supply1
YM***31Gasket (Kit)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Muffler (Forwerded Individually Parts)
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Oil Filter
YM***50Nut1
YM***00Valve Ass'Y1
YM***50Cartridge,Engine Oil1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Oil Pan
YM***71Oil Pan Ass'Y1
YM***40Plug,Drain1
YM***52Bolt Plated16
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Oil Pump
YM***22Screw2
YM***30O-Ring (Kit)1
YM***20O-Ring,Cylinder Head Cover Bolt1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Piston And Connecting Rod
YM***00Piston Ring Ass'Y1
YM***10Bearing (--0.25 mm)1
YM***30Piston Ass'Y2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Rear Hanger
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Rocker Arm
YM***30Screw,Adjusting2
YM***40Shaft Ass'Y1
YM***50Rocker Arm Ass'Y,Intake2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Starting Motor (0.8kw) (Inner Parts)(#00101-10055)
YM***00Stopper Set1
YM***10Holder Brush, Assembly1
YM***70Magnetic Switch A1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Starting Motor (0.8kw) (Inner Parts)(#10056-)
YM***00Stopper Set1
YM***40Cover Ass'Y1
YM***50Brush (+)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Starting Motor And Mounting (0.8kw)
YM***52Screw2
(Y***0)Starting Motor Ass'Y,(0.8kw) (See Fig.A6210-C0a1)1
(Y***1)Starting Motor Ass'Y,(0.8kw) (See Fig.A6210-B0a1)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Tool
YM***60Wrench,Fuel Filter? Water Separator1
YM***50Screw Driver1
YM***51Wrench,(For Engine Oil Filter)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Water Pump And Cooling Fan
YM***30Cover1
YM***10Tank Ass'Y,Sub1
YM***20Gasket (Kit)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : 2d68e-3a Engine S/N 00101-Up : Water Separator(#00101-10055)
YM***00Gasket2
YM***00O-Ring (Kit)1
YM***50Plug,Air2
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Accessory
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Accessory : Cap And Overalls (For Ec Spec.)
09***50Overall,(Special Order)1
09***57Cap,(Special Order)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Accessory : Spare Parts
07***23O-Ring,(For 2nd Travel Speed) (Op)1
21***50Cartridge,Hydraulic Filter1
YM***80O-Ring,Engine Oil Drain1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Accessory : Tool
09***06Wrench Set,8x10? 12x14? 13x17?1
09***80Wrench,Hydraulic Filter1
09***00Tag,(For South And North America)1
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Cooling System
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Cooling System : Cooling (Radiator And Piping)
01***55Bolt4
01***25Bolt,Without Revolution Sensor4
01***16Bolt, Mount Solenoid Valve2
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Electrical System
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Electrical System : Battery And Wiring (For Diesel Spec.)
01***06Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-108064
08***30Cap,(For Relay)1
21***20Cable1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Electrical System : Electrical (Panel And Main Harness) (For Diesel Spec.)
01***16Bolt - Seat And Tether Belt Mounting1
01***12Screw (Without Radio Or Stereo) (2)4
01***10Bolt - Relay And Flasher Mounting4
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Engine Related Parts
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Engine Related Parts : Dumper (For Diesel Spec.)
01***20Bolt,(For Quick Shift) (Mitsubishi)8
01***32Washer,(With Auto Emergency Steering)8
04***08Adapter Sleeves6
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Engine Related Parts : Engine Mounting Parts (For Diesel Spec.)
01***25Bolt,(For Canvas Canopy?Head Guard)15
01***06Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-108068
01***23Washer, Wiring Harness Mounting Bracket8
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Engine Related Parts : Engine Related Parts (Exhaust Pipe) (For Diesel Spec.)
01***16Bolt, Mount Washer Tank To Bracket, Bolt2
01***16Bolt (With Air Heater & Conditioner)4
01***20Bolt,(For Quick Shift) (Mitsubishi)3
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Engine Related Parts : Engine Related Parts (Muffler Cover) (For Diesel Spec.)
01***16Bolt, Mount Solenoid Valve4
21***11Cover1
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Fuel Tank And Related Parts
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Fuel Tank And Related Parts : Fuel Tank And Piping (For Diesel Spec.)
01***20Bolt,(With Auto Emergency Steering)2
01***65Bolt,R.H1
01***04Nut,(For Air Conditioner Less)4
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Guard
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Guard : Counter Wight
01***70Bolt, Accumulator Mounting Bracket2
01***32Washer,(Not Used With Emergency Str.)2
21***16Weight,Counter Paint(1)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Guard : Hood
01***20Bolt,(With Auto Emergency Steering)2
01***20Screw2
01***12Bolt,(With Speedometer)2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Guard : Hood (For Alterable Gauge Spec.) (Kuc Spec.)
01***20Bolt,(With Auto Emergency Steering)2
01***20Screw2
01***12Bolt,(With Speedometer)2
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Hydraulic System
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Actuator Line (1/2) (Swing? Travel? Blade Cylinder Line)
08***76Band2
20***70Sheet1
21***31Hose,Swing1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Actuator Line (1/2) (Swing? Travel? Blade Cylinder Line) (For Long Arm)
08***76Band2
20***70Sheet1
21***31Hose,Swing1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Actuator Line (2/2) (Arm? Boom Swing? Boom? Bucket Cylinder Line)
08***19Band - Tie Hose To Wire Harness1
08***76Band1
21***41Tube1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Actuator Line (2/2) (Arm? Boom Swing? Boom? Bucket Cylinder Line)(For Long Arm)
08***76Band1
21***41Tube1
21***10Hose,Arm Bottom1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Attachment Line (For 1-Way Control Spec.)
01***16Bolt, Mount Solenoid Valve2
07***12Plug,(For Backhoe)2
07***22Hose1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Attachment Line (For 2-Way Control Spec.)
01***16Bolt, Mount Solenoid Valve2
07***23O-Ring,(For 2nd Travel Speed) (Op)1
07***12Plug,(For Backhoe)2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Delivery Line
07***08Plug,See Fig. K4010-63a02
21***12Hose1
21***22Hose1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Hydraulic Control Valve (9-Spool) (1/3) (Inner Parts)
01***10Bolt8
01***40Bolt8
01***06Nut, Regular Hexagon (M8-1.25)6
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Hydraulic Control Valve (9-Spool) (2/3) (Inner Parts)
01***10Bolt10
01***40Bolt10
07***11O-Ring,(Tm8202-009)12
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Hydraulic Control Valve (9-Spool) (3/3) (Inner Parts)
01***06Nut2
07***23O-Ring,(F4350-66a1 -1c )2
07***23O-Ring,(For 2nd Travel Speed) (Op)3
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Hydraulic Control Valve (Elbow And Nipple)
07***23O-Ring,(For 2nd Travel Speed) (Op)20
20***21Nipple3
20***60Nipple3
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Hydraulic Pump (1/2) (Inner Parts) (For Diesel Spec.)
04***12Ring,Split, Ring-Snap1
70***10Seal,Oil1
70***50Pump Ass'Y,(Fbr-0 5.0+5.0)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Hydraulic Pump (2/2) (Inner Parts) (For Diesel Spec.)
07***14O-Ring,(F4350-63a1a-2 )1
70***50Plug1
70***50Pump Ass'Y,(Fbr-0 5.0+5.0)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Hydraulic Tank (For Diesel Spec.)
01***20Bolt,(With Auto Emergency Steering)3
01***16Bolt, Mount Solenoid Valve4
01***23Washer, Wiring Harness Mounting Bracket3
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Main Pump (Mounting And Elbow) (For Diesel Spec.)
01***25Bolt,Without Revolution Sensor2
01***23Washer, Wiring Harness Mounting Bracket2
07***14O-Ring,(F4350-61a0a-20 )2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Return Line
01***16Bolt, Mount Solenoid Valve2
07***45Hose1
07***59Clamp - Drain Hose4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Hydraulic System : Suction Line (For Diesel Spec.)
Main/Revolving Frame And Related Parts
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Main/Revolving Frame And Related Parts : Revolving Frame (For Diesel Spec.)
21***90Sheet4
21***10Frame1
21***11Revo Frame1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Main/Revolving Frame And Related Parts : Revolving Frame (Lubricating)
07***00Fitting, Grease - Upper Hinge Pin2
08***10Clip,See Fig. K4010-06a01
21***11Nipple3
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Main/Revolving Frame And Related Parts : Swing Bracket
01***20Bolt,(For Quick Shift) (Mitsubishi)5
01***16Bolt, Mount Solenoid Valve2
01***32Washer,(With Auto Emergency Steering)5
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Main/Revolving Frame And Related Parts : Swing Clinder (Inner Parts)
01***15Nut,(For Slag Handling)1
07***48O-Ring,(F4350-64a0 -21 )1
07***45O-Ring,(F4350-60a0 -9 )1
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Marks And Plates
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Marks And Plates : Marks And Plates (For Diesel Spec.) (Alterable Gauge) (Kuc Spec.)
04***60Screw,Machine Model (For Ec Reg.)8
09***30Plate? Name,(Limited Supply)1
09***05Plate? Name,Tops (Limited Supply)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Marks And Plates : Marks And Plates (For Diesel Spec.) (Kuc Spec.)
04***60Screw,Machine Model (For Ec Reg.)8
09***30Plate? Name,(Limited Supply)1
09***05Plate? Name,Tops (Limited Supply)1
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Operator'S Compartment And Control System
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Attachment Control Pedal
01***16Bolt, Mount Solenoid Valve2
01***25Bolt - Relay Mounting2
01***65Bolt,(For Alternator Bracket Mount)2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Floor Frame (Floor Mat)
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Handrail (Without Canopy)
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Main Control (1/8) (Bracket And Travel Lever)
01***20Bolt,(Without Air Con. Or Heater)4
01***16Screw1
01***05Nut,(For Air Conditioner Less), Nut4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Main Control (2/8) (Control Lever L.H.)
01***20Bolt,(Without Air Con. Or Heater)4
01***05Nut,(For Air Conditioner Less), Nut2
01***08Nut (Op)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Main Control (3/8) (Control Lever R.H.)
01***20Bolt,(Without Air Con. Or Heater)1
01***05Nut,(For Air Conditioner Less), Nut2
01***08Nut (Op)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Main Control (4/8) (Boom Swing Control Pedal)
01***25Bolt,(Rear Attachment Less)1
01***23Washer, Wiring Harness Mounting Bracket1
04***24Pin, Spring1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Main Control (5/8) (Fuel Contorol Cable)
01***12Screw1
01***16Bolt, Mounting Transmission Control Switch2
01***07Nut2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Main Control (6/8) (Valve And Munting Parts)
01***16Bolt - Seat And Tether Belt Mounting3
01***40Bolt1
01***06Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-108062
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Main Control (7/8) Lock Lever)
01***12Bolt,(See Fig. K0210-16a0)2
01***16Bolt, Mounting Transmission Control Switch6
01***23Washer, Flat1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Main Control (8/8) (Linkage And Switch)
01***20Bolt,(Without Air Con. Or Heater)3
01***25Capscrew2
01***20Bolt, Wiring Harness Mounting Bracket2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Operator'S Seat
01***16Bolt (With Air Heater & Conditioner)4
01***06Nut12
20***40Spacer4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Operator'S Compartment And Control System : Tops Canopy
01***30Bolt,(With Body Positioner)10
01***32Washer,(With Auto Emergency Steering)10
21***11Pole1
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Swing Circle And Related Parts
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Swing Circle And Related Parts : Swing Circle
01***25Bolt,(For Canvas Canopy?Head Guard)10
01***45Bolt,(For Power Tilt Mech Angle)12
04***28Pin, Dowel - Transmission Case, Pin-Dowel2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Swing Circle And Related Parts : Swing Machinery And Motor (Mounting)
01***30Bolt,(For Quick Shift) (Mitsubishi)4
01***30Bolt,(Tm8072-121)2
01***32Washer,(With Auto Emergency Steering)4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Swing Circle And Related Parts : Swing Motor (Inner Parts)
20***00Motor Ass'Y1
20***30Spacer1
20***40Geroler Ass'Y1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Swing Circle And Related Parts : Swivel Joint (Inner Parts)
01***16Bolt (Op)4
04***18Ring,Snap (With Emergency Steering)1
70***10Swivel Joint Ass'Y1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Swing Circle And Related Parts : Swivel Joint (Swivel Joint And Mounting)
01***20Bolt,(With Auto Emergency Steering)4
01***30Bolt,(For Quick Shift) (Mitsubishi)2
01***23Washer, Wiring Harness Mounting Bracket4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Swing Circle And Related Parts : Swivel Joint (Swivel Joint And Mounting) (For Alterable Gauge Spec.) (Kuc Spec.)
01***20Bolt,(With Auto Emergency Steering)4
01***30Bolt,(For Quick Shift) (Mitsubishi)2
01***23Washer, Wiring Harness Mounting Bracket4
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Travel And Lower Piping
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Travel And Lower Piping : Final Drive (Travel Motor Mounting)
01***20Bolt, Adapter Mounting14
07***14O-Ring,(F4350-61a0a-20 )4
20***10Nipple4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Travel And Lower Piping : Lower Piping
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Travel And Lower Piping : Lower Piping (Selector Valve) (For Alterable Gauge Spec.)
01***60Bolt, Mounting4
07***23O-Ring,(For 2nd Travel Speed) (Op)6
07***10Union,(For Cross Link)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Travel And Lower Piping : Lower Piping (Travel Motor And Blade Cylinder Line) (For Alterable Gauge Spec.) (Kuc Spec.)
08***14Band,(D60p)2
08***02Guard, Hose (See Fig. K4200-23a0)1
21***11Hose,(L=195mm)1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Travel And Lower Piping : Sprocket
01***25Bolt,See Fig. K4010-65a018
21***10Sprocket2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Travel And Lower Piping : Travel Motor (Inner Parts) (1/3)
20***70Plug3
20***10Floating Seal Ass'Y1
20***20Bearing2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Travel And Lower Piping : Travel Motor (Inner Parts) (2/3)
04***12Pin, Spring6
04***10Ring,See Fig. K4010-65a01
04***12Ring, Snap1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Travel And Lower Piping : Travel Motor (Inner Parts) (3/3)
01***20Screw6
04***12Pin,Spring (See Fig.0201)1
07***10O-Ring,Plate4
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Under Carriage
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Under Carriage : Front Idler
01***30Bolt,(For Quick Shift) (Mitsubishi)4
01***25Bolt2
01***16Bolt, Mount Solenoid Valve4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Under Carriage : Track Frame
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Under Carriage : Track Frame (For Alterable Gauge Spec.) (Kuc Spec.)
01***20Bolt,(For Quick Shift) (Mitsubishi)8
01***25Bolt,(For Canvas Canopy?Head Guard)8
01***16Bolt, Mount Solenoid Valve4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Under Carriage : Track Frame Cover
01***12Bolt,(With Speedometer)2
01***16Bolt, Mount Solenoid Valve4
01***75Screw2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Under Carriage : Track Roller
01***25Bolt,(For Canvas Canopy?Head Guard)8
04***12Ring,Snap (For Ripper)2
04***18Ring, Snap2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Under Carriage : Track Shoe (For Color Rubber Shoe)
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Under Carriage : Track Shoe (For Rubber Shoe)
Work Equipment
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Arm (Arm And Pin)
01***20Bolt,(For Mono Lever Steering)2
01***32Washer,(With Auto Emergency Steering)2
07***00Fitting, Grease - Upper Hinge Pin2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Arm Cylinder
01***15Nut,(For Slag Handling)1
07***48O-Ring,(F4350-64a0 -21 )1
07***45O-Ring,(F4350-60a0 -9 )1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Attachment Hydraulic Control Line
01***16Bolt, Mount Solenoid Valve6
08***19Band - Tie Hose To Wire Harness3
21***30Elbow2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Blade (Blade And Pin)
01***20Bolt,(For Quick Shift) (Mitsubishi)4
01***32Washer,(With Auto Emergency Steering)4
20***20Pin4
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Blade Cylinder
01***15Nut,(For Slag Handling)1
07***48O-Ring,(F4350-64a0 -21 )1
07***45O-Ring,(F4350-60a0 -9 )1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Blade Cylinder (For Alterable Gauge Spec.) (Inner Parts)
01***15Nut,(For Slag Handling)1
07***48O-Ring,(F4350-64a0 -21 )1
07***45O-Ring,(F4350-60a0 -9 )1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Blade Cylinder (For Alterable Gauge Spec.) (Kuc Spec.)
Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Boom (Boom? Pin And Working Lamp)
01***20Bolt,(For Mono Lever Steering)4
01***16Bolt, Mount Solenoid Valve1
01***16Bolt - Starting Motor Ground Cable1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Boom (Boom? Pin And Working Lamp) (For Breaker Spec.)
01***20Bolt,(For Quick Shift) (Mitsubishi)2
01***20Bolt,(For Mono Lever Steering)2
01***16Bolt, Mount Solenoid Valve1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Boom Cylinder
01***20Bolt,(With Auto Emergency Steering)2
01***13Nut,Plate (Welded)1
01***23Washer, Wiring Harness Mounting Bracket2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Boom Cylinder (Boom Cylinder And Cover)
01***16Bolt - Seat And Tether Belt Mounting1
01***23Washer, Wiring Harness Mounting Bracket1
20***10Guide2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Breaker (Inner Parts)
20***20Bushing6
20***11Seal,Dust (Kit)6
21***11Breaker,Hydraulic1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Breaker Accessary (Chisel? Dummy Chisel And Dummy Link)
21***01Breaker Ass'Y1
21***20Chisel1
21***30Dummy Chisel1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Bucket Cylinder
01***16Bolt (With Air Heater & Conditioner)1
01***15Nut,(For Slag Handling)1
01***23Washer, Wiring Harness Mounting Bracket1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Bucket Link
01***20Bolt,(For Mono Lever Steering)4
01***32Washer,(With Auto Emergency Steering)4
07***00Fitting, Grease - Upper Hinge Pin2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Bucket Pin
01***20Bolt,(For Mono Lever Steering)2
01***32Washer,(With Auto Emergency Steering)2
07***00Fitting, Grease - Upper Hinge Pin2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Bucket? (0.015m3) (Mini 0.02m3) Width 250mm
20***20Tooth (Welded)2
20***20Edge (Welded)1
21***60Edge,Side (Welded)2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Bucket? (0.025m3) (Mini 0.04m3) Width 400mm
20***20Tooth (Welded)4
20***20Edge (Welded)1
21***60Edge,Side (Welded)2
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Bucket? (0.02m3) (Mini 0.04m3) Width 350mm
20***20Tooth (Welded)3
21***60Edge,Side (Welded)2
21***10Bucket1
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Komatsu : Pc03-2-K(S/N 15001-Up (For U.S.A.)) : Work Equipment : Long Arm (Arm And Pin)
01***20Bolt,(For Mono Lever Steering)2
01***32Washer,(With Auto Emergency Steering)2
07***00Fitting, Grease - Upper Hinge Pin2
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PC03-2-K(S/N 15001-UP (FOR U.S.A.)) serial number reference

Locate the 17-character ISO PIN plate on the right-hand side of the cab lower frame, near the front idler or beneath the operator's window. The first three characters (positions 4–6 of the full PIN, or the model prefix on the chassis plate) identify the family; for the PC03-2-K, the chassis plate reads 'PC03-2-K' followed by the serial number starting at 15001.

PrefixIdentifies
PC03-2-KStandard undercarriage, US market

Frequently asked questions

What engine does the Komatsu PC03-2-K use?

The Komatsu PC03-2-K uses a compact diesel engine specific to the mini excavator class. Exact displacement and horsepower vary by configuration and serial range. Consult the factory spec sheet for the precise engine model and ratings for serial number 15001 and up.

What is the operating weight of the Komatsu PC03-2-K?

The operating weight is approximately 0.82 tons (1,808 lb). This weight varies by configuration, series, and installed attachments. Verify the exact weight for your specific serial number with your dealer.

What model replaced the Komatsu PC03-2-K?

The PC03-2F succeeded the PC03-2 series. It offered updated hydraulic systems and engine configurations to meet newer emissions standards. The PC03-2-K was manufactured from 1997 to 1998.

What PC03-2-K(S/N 15001-UP (FOR U.S.A.)) owners discuss

What are the typical powertrain and hydraulic behaviors observed in this machine class?
Hydraulic performance is sensitive to oil temperature. Functions may operate normally when cold but become sluggish as the oil warms, indicating internal leakage in the main pump, control valve, or motors. Engine power loss under load often stems from airflow restriction or fuel delivery issues rather than hydraulic overload. If all functions slow simultaneously, check hydraulic oil level, filter condition, and engine RPM. If only one function is weak, inspect the specific cylinder, control valve spool, or hose restriction. A machine that pulls to one side during travel usually has mechanical track binding or debris in the undercarriage rather than a hydraulic travel motor failure. Verify mechanical resistance before diagnosing hydraulic circuits. The cooling system is often marginal; debris packed between heat exchangers causes overheating that clears only after idling. Ensure the radiator house pan is removed during cleaning to prevent debris from being sucked back into the fins. Brass fragments in the hydraulic suction strainer indicate severe pump wear in older units of this era. Always confirm the exact serial range and configuration before troubleshooting, as specifications vary by model year and regional emissions package.
What undercarriage and wear patterns are typical for this machine type?
Undercarriage components including track pads, bushings, and bearings experience significant wear from continuous load and abrasive environments. Worn bushings cause noise and vibration, while degraded bearings lead to premature track failure. Track tension must be monitored regularly; repeated loosening indicates issues with the tensioner or component wear. Track width is 180 mm. Transport width is 0.8 meters. Operating weight is 0.82 tons. Bucket capacity is 0.02 cubic meters. Boom length is 1357 mm (4 ft 5 in). Stick length is 684 mm (2 ft 3 in). Operating length is 2896 mm (9 ft 6 in). Verify track condition and tension during operation to prevent drift or uneven wear.
What engine quirks are associated with this series?
Engine performance issues dominate serious fault lists. Loss of power, increased fuel consumption, or overheating may signal airflow restriction, injector wear, or failing fuel delivery components. Contamination, extended service intervals, and low-quality fuel accelerate engine wear. Overheating is a critical issue; the cooling system relies on radiators, water pumps, thermostats, and coolant. If the engine overheats during heavy work but cools during idling, cooling capacity is marginal. If coolant is expelled or the system pressurizes shortly after a cold start, deeper engine diagnosis is required. Check the air filter, fuel filters, fuel tank venting, intake hoses, and charge-air hoses on turbocharged engines. Loose clamps or damaged pipes contribute to power loss. Test fuel pressure to ensure it meets specifications. The engine control unit monitors and regulates fuel injection and ignition timing. Faulty sensors or unstable power supplies can trigger multiple warning signals or random shutdowns. Verify the exact engine designation for this serial range, as configurations vary.
What are common electrical or sensor issues?
Komatsu excavators rely on electronic control systems. A single faulty sensor or unstable power supply can trigger multiple warning signals. Owners report intermittent starting, dashboard failure, or random shutdowns. Common fault codes include low charging voltage, low oil pressure, low coolant level, and hydraulic oil overheating. Sensor power supply faults, such as low or high voltage on sensor power 2, indicate wiring or connector issues. Abnormal engine speed sensor readings or injector open/short faults require electrical diagnosis. Check battery state of charge, terminals, engine and chassis grounds, and the main starter cable. If the display dims heavily during starting, perform a load and voltage-drop test. Multiple fault codes often point to battery issues, poor grounds, or connector corrosion. Verify the exact electrical configuration for this serial range, as systems vary by model year.
What should be checked when buying a used PC03-2-K(S/N 15001-UP (FOR U.S.A.))?
Verify the exact serial-prefix specification sheet and installed attachment package. Confirm the operating weight, maximum dig depth, reach, bucket digging force, arm digging force, hydraulic flow, and counterweight configuration. Check the hydraulic oil condition and temperature behavior. Test all functions cold and hot to identify internal leakage. Inspect the undercarriage for track tension, roller condition, and track-chain wear. Check the cooling package for debris packed between heat exchangers. Verify the engine air filter, fuel filters, and coolant level. Inspect the radiator house pan for debris accumulation. Check for brass fragments in the hydraulic suction strainer. Verify the battery and starter operation. Confirm the exact engine designation and electrical configuration for this serial range, as specifications vary by configuration and series. Have your dealer verify the final values against OEM literature before purchase.

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

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