Komatsuhydraulic excavatorlarge (pc300 - )
Komatsu PC300-2(S/N 11001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC300-2 (S/N 11001-UP) is a heavy-duty crawler excavator designed for high-production excavation, demolition, and earthmoving. Belonging to the 30-ton class, this machine features a robust hydraulic system and a powerful engine configuration optimized for digging, leveling, and loading tasks. It supports various attachments including breakers, grapples, and thumbs.
As a second-generation series model, the PC300-2 represents a critical era in Komatsu development of integrated machine monitoring and hydraulic efficiency. This series remains valued for its durability and component availability. Many core parts are compatible with subsequent generations.
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 PC300-2(S/N 11001-UP) specifications
Engine
| Model | Komatsu SAA6D114E-3 |
| Type | Water-cooled, 4-cycle, direct injection |
| Aspiration | Turbocharged, aftercooled |
| Cylinders | 6 |
| Displacement | 8.27 l (5/05 in³) |
| Bore x Stroke | 114 mm (4.49 in) x 135 mm (5.31 in) |
| Gross Power | 194 kW (260 HP) |
| Net Power | 184 kW (246 HP) |
| Rated rpm | 1,950 |
| Emissions Tier | EPA Tier 4 Final |
Weights
| Operating Weight (PC300-8, 31.5 in shoes) | 32,000 kg (70,570 lb) |
| Operating Weight (PC300-8, 28 in shoes) | 31,200 kg (68,560 lb) to 31,600 kg (69,800 lb) |
| Operating Weight (PC300-8, 24 in shoes) | 31,100 kg (68,560 lb) to 31,600 kg (69,800 lb) |
| Operating Weight (PC300LC-8, 31.5 in shoes) | 32,665 kg (72,000 lb) |
| Operating Weight (PC300LC-8, 28 in shoes) | 32,190 kg (70,990 lb) |
| Operating Weight (PC300LC-8, 24 in shoes) | 31,600 kg (69,670 lb) |
| Ground Pressure | Varies by configuration: 2.76 kg/cm² (6.63 psi) to 4.05 kg/cm² (9.12 psi) |
Dimensions
| Track shoe width | Varies by configuration: 610 mm (24 in), 711 mm (28 in), or 800 mm (31.5 in) |
Performance
| Maximum travel speed (High) | 3.4 mph |
| Maximum travel speed (Mid) | 2.8 mph |
| Maximum travel speed (Low) | 2.0 mph |
| Swing speed | 9.5 rpm |
| Gradeability | 70% (35°) |
| Maximum drawbar pull | 264 kN (59,300 lb) |
Forces
| Hydraulic relief valve setting (Implement) | 5,400 psi |
Service capacities (summary)
| Fuel tank | 160 US gal |
| Hydraulic tank | 49.7 US gal |
| Engine oil | 9.2 US gal |
| Coolant | 8.5 US gal |
| Diesel Exhaust Fluid (DEF) tank | 10.3 US gal |
| Swing drive | 4.4 US gal |
| Final drive, each side | 2.4 US gal |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC300-2(S/N 11001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Cooling system | not specified | Komatsu Super-coolant AF-NAC |
| Fuel tank | 605.12 L (160 US gal) | not specified |
| Hydraulic system total AND hydraulic tank | 188 L (49.67 US gal) inside tank; 275 L (72.66 US gal) total tank capacity | not specified |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC300-2(S/N 11001-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,500 h |
|
Servicing the PC300-2(S/N 11001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize oil wear analysis at every major service interval to monitor engine oil for wear metals, soot, and fuel dilution. Regularly sample hydraulic fluid to track particle counts and oxidation levels. Monitoring coolant pH and SCA concentrations prevents internal corrosion. These analyses allow for the detection of pump or engine degradation before failure occurs.
Corrective & Common Repairs
Monitor hydraulic oil coolers for signs of clogging, which causes sluggish movement or delayed functions. Inspect engine oil coolers specifically for core leaks that may lead to overheating. Regularly check the condition of pins, bushings, and attachment points for excessive play. Address any identified cracks in hydraulic hoses or radiator fins immediately to prevent secondary damage to the pump or cooling system.
Overhaul & Rebuild Points
Plan for major component evaluations during 2,000-hour services. Key rebuild focus areas include inspecting turbocharger integrity and checking valve clearances. Monitor undercarriage wear, specifically measuring idler guide width and track frame thickness against repair limits. For high-hour machines, prepare for hydraulic pump servicing or final drive oil changes to maintain structural and hydraulic performance standards.
Seasonal & Environment Servicing
During cold weather operation, ensure the machine is prepared for low-temperature starts and check all fluid viscosities. In dusty environments, increase frequency of air filter element inspections and radiator cleaning to prevent overheating. For long-term storage, follow OEM protocols for machine stabilization and protection against moisture ingress in the cab and hydraulic cylinders.
PC300-2(S/N 11001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-8291 | Cartridge,Fuel Filter | Fuel system service | Check fitment → |
| 6710-11-3381 | Screen,Filter | Scheduled service item | Check fitment → |
| 02890-01018 | O-Ring,Filter | Scheduled service item | Check fitment → |
| 207-977-1610 | Filter Ass'Y | Scheduled service item | Check fitment → |
| 07002-03334 | O-Ring, At Transmission Filter | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC300-2(S/N 11001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E03 | Swing parking brake system fault | Safety lever system connectivity or alignment issues. | Inspect lever connectivity and alignment. |
| E10 | Engine controller power failure or engine control drive system circuit malfunction | Engine stall or electrical disruption to the ECM. | Inspect ECM power connections, fuses, or ground wires. |
| E11 | Engine control system failure | Reduction of output power to protect the engine. | Check coolant temperature, oil pressure, and air filter. |
| E15 | Engine sensor fault | Deviation in temperature, fuel pressure, or oil pressure sensor metrics. | Ensure sensor integrity and inspect interconnections. |
| E20 | Hydraulic return filter challenge | Filter contamination or blockage. | Perform filter cleaning or replacement. |
| E0E | Network failure or electronic control system fault | Communication error within the electronic control system/module. | Power off machine and disconnect battery to clear residual power. |
| AA10NX | Air filter clogging | Accumulated dust or debris in the air cleaner. | Replace the air filter. |
| B @ BCNS | Engine coolant overheating | High engine temperature levels. | Check radiator fins, fan belt, and coolant level. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
PC300-2(S/N 11001-UP) attachments & work tools
Buckets
Standard configurations include digging buckets, ditching buckets, and rotary screening buckets. Clamshell bucket capacities reach 1 m³ (1 yd³), while crusher buckets allow for on-site processing of up to 30 tons per hour.
Hydraulic hammers
Compatible hammer classes include 6-inch and 6.5-inch breaker hammers. Available configurations feature top, side, or box hammer mounting.
Quick couplers
The machine supports coupler attachments for rapid tool changes.
Thumbs/grapples
Available options include hydraulic thumbs, mechanical thumbs, hydraulic grapples, rotating hydraulic grapples, and wood grapples. Mechanical and hydraulic grapple types are also supported.
Rippers
Ripper attachments are available for specialized excavation tasks.
Hydraulic-kit notes
The system utilizes a closed-center load-sensing hydraulic design. Implement circuits feature a relief valve setting of 372 MPa (5,400 psi).
All PC300-2(S/N 11001-UP) assemblies by section
Every catalogued assembly group for the Komatsu PC300-2(S/N 11001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine Related Parts And Electrical System
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Air Cleaner And Connection
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Battery And Relay Switch
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : By-Pass Filter And Piping
| 01***16 | Bolt (With Air Heater & Conditioner) | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 9 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Electrical System (2/2)(#11001-11280)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***25 | Bolt,Without Revolution Sensor | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Electrical System (2/2)(#11281-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 6 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Engine Mount
| 01***85 | Bolt,(For Perforated Mask) | 8 |
| 01***85 | Bolt | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever And Linkage
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***60 | Capscrew | 2 |
| 01***65 | Bolt | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(For Rubber Shoe) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Instrument Panel (1/2)
| 01***20 | Bolt,(With Auto Emergency Steering) | 8 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 2 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Instrument Panel (1/2) (E.J.) (Fwc)
| 01***20 | Bolt,(With Auto Emergency Steering) | 9 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 2 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Instrument Panel (2/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***20 | Screw (Not Illustrated) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Instrument Panel (2/2) (E.J.) (Fwc)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***20 | Screw (Not Illustrated) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Muffler And Connection
| 01***30 | Bolt,(Not Used With Emergency Str.) | 5 |
| 01***20 | Capscrew - M12 X 1.75 | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Power Take Off
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 20 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 5 |
| 01***50 | Bolt,(For Strengthened Cover) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Radiator And Oil Cooler
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 10 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 15 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : Engine Related Parts And Electrical System : Radiator Piping
| 01***40 | Bolt,(With Service Valve R.H.) | 2 |
| 01***29 | Washer,Spring (Cold Weather Spec.) | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
N-855-1 S/N 162054-Up
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Air Cleaner
| 04***10 | Ring,See Fig. K4010-65a0 | 1 |
| 09***05 | Plate? Caution,(Not Shown) | 1 |
| 09***05 | Plate? Instruction,(Without Weather Cap Type) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Air Compressor
| 02***22 | Bolt | 2 |
| 02***70 | Bolt | 4 |
| 02***32 | Bolt,(With Joy Stick Steering) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Air Compressor And Piping (For Pc300-1)
| 01***20 | Bolt | 1 |
| 01***19 | Washer,(Not Used With Ventilator) | 1 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Air Intake Manifold And Ribbon Heater(#162054-181379)
| 01***29 | Washer,Spring (Cold Weather Spec.) | 9 |
| 01***16 | Washer,Radio Controlled Slag Handling | 9 |
| 02***51 | Bolt (Op) | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Air Intake Manifold And Ribbon Heater(#181380-)
| 01***29 | Washer,Spring (Cold Weather Spec.) | 9 |
| 01***16 | Washer,Radio Controlled Slag Handling | 9 |
| 02***70 | Bolt (Op) | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Alternator
| 60***70 | Alternator A. (25a) | 1 |
| KD***37 | Bearing,Ball? Front | 1 |
| KD***20 | Holder,Brush | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Alternator And Mounting
| 01***60 | Bolt, Trunnion Cap | 1 |
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Cam Follower And Push Rod
| 02***25 | Bolt | 17 |
| 02***24 | Washer,Radio Controlled Slag Handling | 17 |
| 66***10 | Housing Ass'Y,Cam Follower | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Camshaft
| 02***25 | Key | 1 |
| 66***30 | Washer,Thrust | 1 |
| 66***50 | Plug | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Corrosion Resistor
| 01***29 | Washer,Spring (Cold Weather Spec.) | 4 |
| 02***32 | Bolt,(With Joy Stick Steering) | 4 |
| 07***45 | Hose,Drain | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Crankshaft And Vibration Damper
| 01***30 | Bolt,Radio Controlled Slag Handling | 6 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
| 01***48 | Washer,Spring? Single Flange | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Cylinder Block
| 02***16 | Bolt | 12 |
| 02***25 | Bolt,(Cold Weather Spec.) | 4 |
| 02***16 | Washer,Radio Controlled Slag Handling | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Cylinder Head
| 02***04 | Plug, Pipe | 6 |
| 02***04 | Plug | 4 |
| 02***07 | Plug | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Engine Support
| 61***30 | Washer | 8 |
| 67***10 | Support,Front | 1 |
| 67***20 | Support,Front | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Exhaust Manifold
| 02***38 | Bolt | 8 |
| 02***95 | Bolt | 4 |
| 66***11 | Clamp,Exhaust Manifold | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Fan And Fan Pulley
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
| 01***35 | Bolt,(For Pedal Steering) | 2 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Flywheel And Flywheel Housing
| 01***16 | Bolt,(For Slag Handling) | 3 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 5 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Fuel Filter
| 01***29 | Washer,Spring (Cold Weather Spec.) | 4 |
| 02***32 | Bolt,(With Joy Stick Steering) | 4 |
| 07***12 | Gasket,Mechanical Pump Piping | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Gear Case Cover
| 01***34 | Washer,Spring | 18 |
| 02***25 | Bolt,(Cold Weather Spec.) | 3 |
| 02***64 | Bolt | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Injector
| 67***31 | Plunger Ass'Y | 1 |
| 67***10 | Adapter,Injector | 1 |
| 67***20 | Barrel,Injector | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Kit
| 02***18 | O-Ring,Filter | 1 |
| 02***20 | O-Ring,Barrel | 1 |
| 02***43 | O-Ring,Water Manifold | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Lubricating Oil Bypass Filter
| 02***19 | Bolt | 8 |
| 02***06 | Nut,Radio Controlled Slag Handling | 8 |
| 02***16 | Washer,Radio Controlled Slag Handling | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Lubricating Oil Cooler
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***60 | Bolt (M10-1.50x60) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 5 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Lubricating Oil Filter
| 01***34 | Washer,Spring | 4 |
| 01***48 | Washer,Spring? Single Flange | 1 |
| 01***26 | Washer | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Lubricating Oil Piping
| 01***16 | Bolt,(For Slag Handling) | 1 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 1 |
| 01***16 | Washer,(For 35a Alternator) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Lubricating Oil Pump
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
| 02***64 | Bolt | 2 |
| 02***25 | Bolt,(Europe Spec.) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Muffler
| 61***10 | Gasket,Turbocharger | 1 |
| 67***40 | Gasket,Muffler | 1 |
| 67***10 | Muffler | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Oil Pan
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Piston And Connecting Rod
| 02***13 | Pin,Dowel | 2 |
| 66***30 | Ring,Snap | 2 |
| 67***10 | Pin,Piston | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump (1/7)
| 02***04 | Nut | 2 |
| 02***04 | Plug | 4 |
| 02***18 | O-Ring,Filter | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump (2/7)
| 01***20 | Washer,Spring | 3 |
| 02***25 | Bolt,Radio Controlled Slag Handling | 2 |
| 02***05 | Nut | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump (3/7)
| 01***13 | Washer,Spring | 2 |
| 01***20 | Washer,Spring | 9 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump (4/7)
| 01***20 | Washer,Spring | 4 |
| 02***32 | Bolt,(Logging Spec.) | 2 |
| 66***20 | Ring,Snap | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump (5/7)
| 02***45 | Bolt | 2 |
| 02***12 | Washer,Spring | 4 |
| 66***30 | Washer,Spring | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump (6/7)
| 01***20 | Washer,Spring | 5 |
| 02***32 | Bolt,(Logging Spec.) | 3 |
| 02***38 | Bolt | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump (7/7)
| 01***20 | Washer,Spring | 2 |
| 02***32 | Bolt | 2 |
| 02***64 | Bolt,(For Shipping) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump And Piping(#162054-181379)
| 01***29 | Washer,Spring (Cold Weather Spec.) | 2 |
| 02***25 | Bolt,Radio Controlled Slag Handling | 4 |
| 02***13 | Bolt | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump And Piping(#181380-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***29 | Washer,Spring (Cold Weather Spec.) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Pt Fuel Pump Drive
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Rear Cover
| 02***16 | Bolt | 4 |
| 02***25 | Bolt | 2 |
| 02***32 | Bolt | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Regulator And Safety Relay
| 08***01 | Dust - Indicator | 1 |
| 60***90 | Signal,Heater | 1 |
| 60***90 | Relay, Ribbon Heaters | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Rocker Arm And Housing
| 66***20 | Shaft Ass'Y,Rocker Arm | 1 |
| 66***20 | Plug | 2 |
| 66***30 | Bushing,Arm | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Rocker Arm Housing Cover
| 02***25 | Bolt,(Cold Weather Spec.) | 6 |
| 02***51 | Bolt (Op) | 9 |
| 02***20 | Washer | 15 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Starting Motor
| 60***24 | Starting Motor A.,(11kw) (Cold Weather Spec.) | 1 |
| KD***00 | Seal Ass'Y,(Not Shown) | 1 |
| KD***82 | Screw,Dish | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Starting Motor And Mounting
| 01***45 | Bolt,(For Slag Handling) | 3 |
| 01***22 | Screw | 2 |
| 01***29 | Washer,Spring (Cold Weather Spec.) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Tension Pulley
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
| 01***40 | Bolt,(Cold Weather Spec.) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Water Manifold And Thermostat
| 01***29 | Washer,Spring (Cold Weather Spec.) | 6 |
| 01***29 | Washer, Spring | 12 |
| 02***25 | Bolt | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Water Pump
| 01***29 | Washer,Spring (Cold Weather Spec.) | 7 |
| 02***57 | Bolt | 7 |
| 02***04 | Plug,(For Shipping) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : N-855-1 S/N 162054-Up : Water Separator
| 07***12 | Gasket,Mechanical Pump Piping | 1 |
| 07***11 | Plug,(For Shipping) | 1 |
| 60***11 | Water Separator A | 1 |
Optional Parts
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Air Conditioner Piping : Unit_01_of_02
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 12 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Air Conditioner Piping : Unit_02_of_02
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***59 | Clamp,See Fig. K4010-05a0 | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Air Piping And Air Conditioner
| 01***12 | Bolt,(With Cylinder Cover) | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Car Cooler Piping (1/3)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 5 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Car Cooler Piping (2/3)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***20 | Bolt,(Used When Towing Winch) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Car Cooler Piping (3/3)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Clamshell Bucket? Digging Type
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 4 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Clamshell Cylinder
| 07***45 | O-Ring,Cover | 1 |
| 07***06 | Bushing | 2 |
| 07***60 | Seal,(Y1620-41a0a-14) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Clamshell Piping
| 01***50 | Bolt,(For Strengthened Cover) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Coloring Window Glass
| 20***80 | Proof,Dust | 2 |
| 20***10 | Sash | 1 |
| 20***20 | Lock Ass'Y | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Compressor And Control Panel
| 20***60 | Case Ass'Y | 1 |
| 20***70 | Switch | 1 |
| 20***80 | Resistor | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Compressor Related Parts
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Condenser Unit : Unit_02_of_02
| 20***50 | Condenser Ass'Y | 1 |
| 20***50 | Core | 1 |
| 20***60 | Shroud, Fan | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Condenser Unit : Unit_01_of_02
| 20***70 | Condenser | 1 |
| 20***80 | Motor,Fan | 1 |
| 20***90 | Shroud | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Control Unit
| 20***60 | Control Ass'Y | 1 |
| 20***00 | Switch | 1 |
| 20***10 | Ornament | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Cooling Unit : Unit_01_of_02
| 20***60 | Evaporator | 1 |
| 20***70 | Case Ass'Y | 1 |
| 20***80 | Grille Ass'Y | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Cooling Unit : Unit_02_of_02
| 20***10 | Cooling Unit | 1 |
| 20***10 | Case Ass'Y | 1 |
| 20***20 | Case Ass'Y | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Defroster
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 3 |
| 01***03 | Nut,(With Joy Stick Steering) | 3 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Deluxe Seat (1/2)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 20***40 | Belt,Seat | 1 |
| 20***60 | Washer | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Deluxe Seat (2/2)
| 20***00 | Seat Ass'Y | 1 |
| 20***50 | Cushion,Seat | 1 |
| 20***60 | Cushion,Back | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Ditch Cleaning Bucket
| 09***96 | Pin, Mount Center Teeth (Tip Type) | 6 |
| 20***70 | Tooth | 6 |
| 20***41 | Adapter (Welded) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Electrical System
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Falling Object Protective Structure
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 19 |
| 01***40 | Bolt,(With Center Guard) | 24 |
| 01***50 | Bolt,(For Tbg/Abe Spec.) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Freon Gas Compressor
| 04***20 | Ring, Snap | 1 |
| 14***90 | Bearing | 2 |
| 14***10 | Clutch Ass'Y | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Head Guard
| 01***80 | Bolt, Mount Tubes To Switch And Work Pumps | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Light Work Bucket? 1.4m3? 1500mm
| 09***16 | Pin,(Except Japan) | 6 |
| 20***41 | Adapter (Welded) | 6 |
| 20***42 | Adapter (Welded) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Long Arm
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 4 |
| 01***45 | Washer | 4 |
| 01***32 | Washer | 16 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Long Life Tooth
| 20***80 | Tooth | 0 |
| (0***6) | Pin | 0 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Machinery Compartment (Tbg Spec.)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***08 | Screw, Terminal | 4 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Marks And Plates (Tbg Spec.)
| 01***08 | Screw | 4 |
| 09***43 | Plate? Name,(Limited Supply) | 1 |
| 15***60 | Seat,Non Slip (Large) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Operator'S Cab (Tbg Spec.)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***10 | Screw,(For Lighter) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Over Load Warning Device (1/2) (Tbg Spec.)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Over Load Warning Device (2/2) (Tbg Spec.)
| 01***55 | Bolt,(10m) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Pre-Fuel Filter
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Rear View Mirror
| 01***25 | Bolt,See Fig. K4010-65a0 | 6 |
| 08***16 | Mirror,(Tbg Spec.) | 1 |
| 08***23 | Mirror,(For Japan) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Revolving Frame (Tbg Spec.)
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***08 | Screw, Terminal | 1 |
| 01***20 | Screw (Not Illustrated) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Ripper
| 09***08 | Pin,(Without Pin Puller) | 1 |
| 19***31 | Point,Short?(Yellow) | 1 |
| 20***10 | Ripper Ass'Y | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Ripper Bucket? 0.8m3? 1200mm
| 09***08 | Pin,(Without Pin Puller) | 3 |
| 19***31 | Point,Short?(Yellow) | 3 |
| 20***10 | Bucket | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Rock Bucket? 1.02m3? 1170mm
| 09***16 | Pin,(Except Japan) | 4 |
| 20***41 | Adapter (Welded) | 4 |
| 20***42 | Adapter (Welded) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Self Supply Pump (1/2)
| 07***20 | Hose | 1 |
| 07***59 | Clamp - Drain Hose | 2 |
| 20***30 | Wire | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Self Supply Pump (2/2)
| 20***30 | Pump | 1 |
| 20***30 | Case | 1 |
| 20***40 | Bracket | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Short Arm
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
| 07***00 | Fitting, Grease (Steering Cylinder) | 1 |
| 07***00 | Seal,Dust (Kit) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Slope Finishing Bucket
| 20***10 | Bucket | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Super Short Arm (2200mm)
| 01***45 | Bolt | 8 |
| 01***60 | Flat Washer - M20 (Hardened) | 8 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Three Shank Ripper
| 01***20 | Bolt | 3 |
| 01***13 | Nut,(For Adjustable Rod) | 6 |
| 09***08 | Pin,(Without Pin Puller) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Trapezoidal Bucket
| 20***10 | Bucket,Trapezoidal | 1 |
| 20***20 | Plate (Welded) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Trenching Bucket? 1.0m3? 1125mm
| 01***32 | Nut | 10 |
| 09***16 | Pin,(Except Japan) | 4 |
| 19***30 | Bolt,Shoe (Kit) | 10 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Vandalism Protection
| 07***00 | Cap,(For Vandalism Protection) | 1 |
| 20***30 | Key,(For Vandalism) | 1 |
| 20***10 | Cover | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Window Washer : Unit_02_of_02
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***12 | Screw,(Additional Sun Visor) | 2 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts : Window Washer : Unit_01_of_02
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***12 | Screw,(Additional Sun Visor) | 2 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 2 |
Optional Parts (Special Application Parts)
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Additional Piping (Attachment Side) (1/2)
| 01***90 | Bolt,(Without Giant Ripper) | 24 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 1 |
| 01***10 | Seat (Welded) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Additional Piping (Attachment Side) (2/2)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 8 |
| 01***90 | Bolt,(Without Giant Ripper) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Additional Piping (Control Valve To Change Rotor Block)
| 01***00 | Bolt, Tube | 2 |
| 01***11 | Nut,(With Under Mirror) | 10 |
| 01***32 | Washer,(With Auto Emergency Steering) | 10 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Additional Piping (Pilot Line)
| 01***80 | Bolt,(For Long Lever Control) | 3 |
| 01***06 | Seat (Welded) | 1 |
| 01***23 | Washer,(For Shipping) | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Cab Guard? For Additiional Piping
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***35 | Bolt | 4 |
| 01***09 | Seat,(Welded To Revolving Frame) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Change Rotor Block
| 01***30 | Bolt,(Not Used With Emergency Str.) | 9 |
| 01***05 | Bolt, Mount Tube | 8 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 17 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Check Valve Block (For U.S.A.)
| 04***93 | Ball,Steel | 4 |
| 07***23 | O-Ring,(Tbg Spec.) | 1 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Cold Weather Parts (A) (1/2) (For East Germany)
| 07***34 | O-Ring, O-Ring,Drain Plug? R.H. Half Tank | 2 |
| 07***12 | Plug,(For Ec) | 1 |
| 07***05 | Hose,(With Water Separator) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Cold Weather Parts (A) (2/2) (For East Germany)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 9 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Control Pedal And Linkage (1/2)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***25 | Bolt,Without Revolution Sensor | 1 |
| 01***60 | Capscrew | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Control Pedal And Linkage (2/2)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 1 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Motor Drain Piping (For U.S.A.) : Unit_02_of_02
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Motor Drain Piping (For U.S.A.) : Unit_01_of_02
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Motor Drain Piping (N.G.S.)(#11281-)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
| 01***50 | Bolt,(For Strengthened Cover) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : P.O.C. Valve Piping (Check Valve To Contorol Valve) (For U.S
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 24 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : P.O.C.Piping (For Propel Piping) (For U.S.A.)
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 7 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
| 07***08 | Plug,See Fig. K4010-63a0 | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : P.O.C.Valve Piping (P.O.C.Valve To Check Valve) (For U.S.A.)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
| 01***65 | Bolt,(Except Japan) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 9 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : P.O.C.Valve Piping (Pump To Valve ) (2/2) (For U.S.A.)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 3 |
| 01***11 | Nut,(With Under Mirror) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : P.O.C.Valve Piping (Swing Hold Brake Piping ) (For U.S.A.)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***35 | Screw | 8 |
| 01***35 | Screw | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Pre-Heater
| 20***00 | Pre Heater Ass'Y | 1 |
| 20***10 | Heater | 1 |
| 20***20 | Nozzle Ass'Y | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Propel Assist Valve (For U.S.A.)
| 01***32 | Washer,(Not Used With Emergency Str.) | 1 |
| 07***34 | O-Ring, O-Ring, Oil Level And Fill Plug | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 5 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Propel Sensing Valve (For U.S.A.)
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Selector Valve Control Linkage (For U.S.A.)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***50 | Bolt,(With Service Valve R.H.) | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Hold Brake Switch (For U.S.A.)
| 01***25 | Screw - Antenna Mounting | 2 |
| 01***06 | Nut | 1 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Machinery (1/2) (For U.S.A.)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***55 | Bolt,(For Reinforced Type) | 21 |
| 01***45 | Bolt,(For L=529mm Pin) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Motor (For U.S.A.)(#11001-11386)
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 8 |
| 07***55 | O-Ring,Front Accessory Drive | 2 |
| 07***35 | O-Ring, Upper Cooler Inlet And Outlet Ports | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Motor (For U.S.A.)(#11387-)
| 01***45 | Bolt | 8 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 8 |
| 07***55 | O-Ring,Front Accessory Drive | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Motor Brake Valve (For U.S.A.)(#11001-11386)
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***70 | Bolt,(With Wear Guard) | 8 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Motor Brake Valve (For U.S.A.)(#11387-)
| 07***22 | O-Ring,Lubricating Oil Pipe | 1 |
| 07***22 | Ring, Back-Up | 2 |
| 07***34 | O-Ring, At Transmission Filter | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Motor Parking Brake (For U.S.A.)(#11001-11386)
| 01***55 | Bolt,(Not Used For Chip Dozer) | 8 |
| 01***48 | Washer,Spring (For Slag Handling), Washer-Spring | 8 |
| 01***12 | Washer | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Motor Parking Brake (For U.S.A.)(#11387-)
| 01***55 | Bolt,(Not Used For Chip Dozer) | 8 |
| 01***48 | Washer,Spring (For Slag Handling), Washer-Spring | 8 |
| 01***12 | Washer | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swing Motor Shock-Less Valve (For U.S.A.)(#11001-11386)
| 07***05 | O-Ring (Kit) | 1 |
| 07***09 | O-Ring,(F4350-61a0 -33 ) | 1 |
| 07***16 | O-Ring,Suction And Relief Valve | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Swivel Joint To/From Propel Motor Piping (N.G.S.)(#11281-)
| 01***40 | Bolt,(With Air Conditioner) | 8 |
| 01***50 | Bolt (Kit) | 16 |
| 01***55 | Bolt,(10m) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Track Frame? Narrow Gage Spec.(#11281-)
| 20***11 | Guard (Welded) | 2 |
| 20***21 | Guard (Welded) | 2 |
| 20***10 | Frame | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Valve To From Swing Motor Piping (For U.S.A.)(#11001-11386)
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 01***32 | Washer, (Without Emergency Steering) | 24 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Valve To From Swing Motor Piping (For U.S.A.)(#11387-)
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 01***32 | Washer, (Without Emergency Steering) | 24 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Valve To/From Swivel Joint Piping (For U.S.A.)
| 01***30 | Bolt,(For Mechanical Governor) | 16 |
| 01***50 | Bolt,(For Strengthened Cover) | 2 |
| 01***60 | Bolt, Tube To Oil Cooler | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Optional Parts (Special Application Parts) : Working Lamp (Cab Under Side) (For East Germany)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 1 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 3 |
Revolving Frame And Cab
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Heater
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Machinery Compartment (1/5)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 10 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Machinery Compartment (2/5)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 25 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 25 |
| 20***33 | Cover | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Machinery Compartment (3/5)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 7 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 11 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Machinery Compartment (4/5)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 42 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 44 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Machinery Compartment (5/5)
| 01***20 | Bolt,(With Auto Emergency Steering) | 16 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Marks And Plates (English)
| 01***08 | Screw | 4 |
| 08***35 | Indicator,Dust (Japanese-English) | 1 |
| 09***00 | Plate? Safety,Lock Lever (With Lock Pin) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Marks And Plates (English) (Fwc)
| 01***08 | Screw | 4 |
| 08***35 | Indicator,Dust (Japanese-English) | 1 |
| 09***00 | Plate? Safety,Lock Lever (With Lock Pin) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Marks And Plates (German)
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Marks And Plates (German) (Fwc)
| 01***08 | Screw | 4 |
| 08***35 | Indicator,Dust (English-German) | 1 |
| 09***00 | Plate? Safety,Swing Lock Lever | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Cab (1/6)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 6 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 14 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Cab (2/6)
| 01***16 | Screw, Mount Parking Lights | 2 |
| 01***20 | Screw | 3 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Cab (3/6)
| 01***20 | Bolt,(With Auto Emergency Steering) | 10 |
| 01***12 | Screw,(Additional Sun Visor) | 2 |
| 01***25 | Screw | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Cab (4/6)
| 01***08 | Screw, Terminal | 2 |
| 01***08 | Screw | 6 |
| 01***12 | Screw,(Not Shown) (For Std Cab) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Cab (5/6)
| 01***20 | Bolt,(With Auto Emergency Steering) | 10 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 3 |
| 01***12 | Screw,(With Articulate Indicator) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Cab (6/6)
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 6 |
| 01***25 | Screw | 2 |
| 01***12 | Screw | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Cab Frame
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 10 |
| 01***75 | Bolt | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Cab Frame (E.J.) (Fwc)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 10 |
| 01***75 | Bolt | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Operator'S Seat
| 01***20 | Bolt,(Large Capacity Type) (Std) | 5 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Revolving Frame(#11001-11280)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 12 |
| 01***65 | Bolt,(With Canvas Or Rops Canopy) | 6 |
| 01***08 | Screw, Terminal | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Revolving Frame(#11281-)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***65 | Bolt,(With Canvas Or Rops Canopy) | 6 |
| 01***08 | Screw, Terminal | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Revolving Frame And Cab : Under Cover
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 56 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 8 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 64 |
Swing And Control Systems
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.N.C. Piping (1/2)
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 3 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 4 |
| 07***08 | Plug,See Fig. K4010-63a0 | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.N.C. Piping (2/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve
| 01***20 | Bolt,(With Auto Emergency Steering) | 10 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 10 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Arm And Swing) (E.J.) (Fwc)(#11001-11386)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Arm And Swing) (E.J.) (Fwc)(#11387-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Arm And Swing)(#11001-11386)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Arm And Swing)(#11387-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Boom And Bucket)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Boom And Bucket) (E.J.) (Fwc)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Pump To Valve) (1/2)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Pump To Valve) (1/2) (E.J.) (Fwc)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Pump To Valve) (2/2)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 2 |
| 01***11 | Nut,(With Under Mirror) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : P.O.C. Valve Piping (Pump To Valve) (2/2) (E.J.) (Fwc)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Relief Valve
| 01***05 | Nut (Welded) | 1 |
| 07***32 | O-Ring,Drain Plug? Main Clutch | 1 |
| 07***15 | O-Ring,Regulator Valve | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Swing Circle(#11001-11280)
| 01***45 | Bolt,(For L=529mm Pin) | 34 |
| 01***55 | Bolt,(For L=529mm Pin) | 36 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 70 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Swing Circle(#11281-)
| 01***40 | Bolt | 34 |
| 01***45 | Bolt,(For L=529mm Pin) | 36 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 70 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Swing Machinery (1/2) : Unit_01_of_02
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***55 | Bolt,(For Reinforced Type) | 21 |
| 01***45 | Bolt,(For L=529mm Pin) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Swing Machinery (1/2) : Unit_02_of_02
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***60 | Bolt,(For Ripper) | 12 |
| 01***70 | Bolt,Leaning Lock | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Swing Motor
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 8 |
| 07***55 | O-Ring,Front Accessory Drive | 1 |
| 07***35 | O-Ring, Upper Cooler Inlet And Outlet Ports | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Swing Motor Brake Valve
| 01***70 | Bolt,(With Wear Guard) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 8 |
| 07***70 | O-Ring (Kit) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Swing Motor Shock-Less Valve
| 07***05 | O-Ring (Kit) | 1 |
| 07***09 | O-Ring,(F4350-61a0 -33 ) | 1 |
| 07***16 | O-Ring,Suction And Relief Valve | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Valve Control Lever And Linkage (1/2)
| 01***40 | Bolt,(With Air Conditioner) | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Valve Control Lever And Linkage (2/2)
| 01***25 | Bolt,Without Revolution Sensor | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Valve Control Lever And Linkage? L.H. (E.J.) (Fwc)
| 01***40 | Bolt | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 5 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Valve Control Lever And Linkage? R.H. (1/2) (E.J.) (Fwc)
| 01***40 | Bolt | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***23 | Plain Washer | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Valve Control Lever And Linkage? R.H. (2/2) (E.J.) (Fwc)
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 10 |
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Valve To/From Swing Motor Piping(#11001-11386)
| 01***11 | Nut,(With Under Mirror) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 01***32 | Washer, (Without Emergency Steering) | 24 |
Komatsu : Pc300-2(S/N 11001-Up) : Swing And Control Systems : Valve To/From Swing Motor Piping(#11387-)
| 01***11 | Nut,(With Under Mirror) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 01***32 | Washer, (Without Emergency Steering) | 24 |
Tool And Kit
Komatsu : Pc300-2(S/N 11001-Up) : Tool And Kit : Tool
| 07***00 | Pump,Grease | 1 |
| 07***02 | Cartridge,Grease | 1 |
| 07***45 | Nozzle, Grease Pump (Non-Flexible Type) | 1 |
Travel And Final Drive
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Final Drive Case And Sprocket
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 22 |
| 01***65 | Bolt | 40 |
| 01***95 | Bolt | 10 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Final Drive Gear
| 01***60 | Bolt,Reamer | 24 |
| 01***16 | Nut | 24 |
| 01***08 | Washer | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Motor Drain Piping(#11001-11386)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Motor Drain Piping(#11387-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Propel Control Lever And Linkage
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Propel Control Lever And Linkage (1/2) (E.J.)(#11001-11426)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Propel Control Lever And Linkage (1/2) (E.J.)(#11427-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Propel Control Lever And Linkage (2/2) (E.J.)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Propel Motor (1/2)
| 04***30 | Seal, Dust | 1 |
| 07***23 | O-Ring; Was 07002-10823, O-Ring,(Not Shown) | 1 |
| 07***07 | Plug,(Tbg Spec.), Plug; Was 07040-10807 | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Propel Motor (2/2)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 12 |
| 04***20 | Pin,Dowel (Welded) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Swivel Joint
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
| 04***30 | Ring, Retaining | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Swivel Joint To/From Propel Motor Piping(#11001-11161)
| 01***40 | Bolt,(With Air Conditioner) | 8 |
| 01***50 | Bolt (Kit) | 16 |
| 01***55 | Bolt,(10m) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Swivel Joint To/From Propel Motor Piping(#11162-)
| 01***40 | Bolt,(With Air Conditioner) | 8 |
| 01***50 | Bolt (Kit) | 16 |
| 01***55 | Bolt,(10m) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Travel And Final Drive : Valve To/From Swivel Joint Piping
| 01***30 | Bolt,(For Mechanical Governor) | 16 |
| 01***50 | Bolt,(For Strengthened Cover) | 2 |
| 01***60 | Bolt, Tube To Oil Cooler | 1 |
Under Carriage
Komatsu : Pc300-2(S/N 11001-Up) : Under Carriage : Carrier Roller
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***75 | Bolt, Hanger Bearing Mounting | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Under Carriage : Front Idler(#11001-11079)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 16 |
| 01***13 | Nut - Cylinder Mounting | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 16 |
Komatsu : Pc300-2(S/N 11001-Up) : Under Carriage : Front Idler(#11080-)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 16 |
| 01***13 | Nut - Cylinder Mounting | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 16 |
Komatsu : Pc300-2(S/N 11001-Up) : Under Carriage : Recoil Spring
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Bolt,(For Rubber Shoe) | 2 |
| 01***00 | Bolt - Cover Mounting | 16 |
Komatsu : Pc300-2(S/N 11001-Up) : Under Carriage : Track Frame(#11001-11280)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 3 |
| 01***50 | Bolt,(For Tbg/Abe Spec.) | 16 |
Komatsu : Pc300-2(S/N 11001-Up) : Under Carriage : Track Frame(#11281-)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***50 | Bolt,(For Tbg/Abe Spec.) | 16 |
Komatsu : Pc300-2(S/N 11001-Up) : Under Carriage : Track Roller
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***65 | Bolt,L.H | 56 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : Under Carriage : Track Shoe
| 01***26 | Nut? Shoe (Kit) | 360 |
| 14***24 | Link,Track? L.H | 90 |
| 14***34 | Link,Track? R.H | 90 |
Work Equipment
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment : Arm
| 01***45 | Bolt | 8 |
| 01***60 | Flat Washer - M20 (Hardened) | 8 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment : Boom
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 4 |
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 8 |
| 01***40 | Bolt | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment : Bucket 1.2m3? 1300mm
| 01***32 | Nut | 10 |
| 09***16 | Pin,(Except Japan) | 5 |
| 19***30 | Bolt,Shoe (Kit) | 10 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment : Link
| 01***19 | Nut - M24 | 8 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 4 |
| 20***80 | Seal,Dust (Kit) | 6 |
Work Equipment Control System
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Arm Cylinder
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 4 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Arm Piping (Chassis Side) (1/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 8 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Arm Piping (Chassis Side) (2/2)
| 01***60 | Bolt, Mount Tube To Switch Pump | 8 |
| 01***32 | Washer, (Without Emergency Steering) | 16 |
| 04***12 | Ring,Split, Ring-Snap | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Boom Cylinder(#11001-11097)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 4 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Boom Cylinder(#11098-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Boom Piping (Chassis Side)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***70 | Bolt, Accumulator Mounting Bracket | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Boom? Arm And Bucket Cylinder Piping
| 01***50 | Bolt,(For Strengthened Cover) | 14 |
| 01***60 | Bolt, Tube To Oil Cooler | 4 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Bucket Cylinder
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Bucket Piping (Chassis Side)
| 01***60 | Bolt, Mount Tube To Switch Pump | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 01***32 | Washer, (Without Emergency Steering) | 16 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Control Valve (F.L.H.P.A-L.B-H.A.S.)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***20 | Bolt, Mount Spool Covers | 14 |
| 01***25 | Bolt | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Control Valve (F.R.H.P.B-L.B-L.A.S.)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***20 | Bolt, Mount Spool Covers | 14 |
| 01***25 | Bolt | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Control Valve (For Arm High)
| 01***20 | Bolt, Mount Spool Covers | 4 |
| 07***32 | O-Ring,Drain Plug? Main Clutch | 1 |
| 07***35 | O-Ring,(F4350-61a0 -32 ) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Control Valve (For Bucket High)
| 01***20 | Bolt, Mount Spool Covers | 4 |
| 07***32 | O-Ring,Drain Plug? Main Clutch | 1 |
| 07***35 | O-Ring,(F4350-61a0 -32 ) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Hydraulic Pump (1/2)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt, Seal Cover Mounting | 8 |
| 01***30 | Screw | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Hydraulic Pump (2/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 8 |
| 04***15 | Ring, Snap | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Hydraulic Pump And P.C.Regulator Valve (F.P.A.A.) (1/3)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***90 | Bolt, Fan Mounting | 4 |
| 01***10 | Bolt, Fan Mounting | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Hydraulic Pump And P.C.Regulator Valve (F.P.A.A.) (2/3)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***10 | Bolt, Fan Mounting | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 12 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Hydraulic Pump And P.C.Regulator Valve (F.P.A.A.) (3/3)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 10 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Hydraulic Tank(#11001-11196)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Hydraulic Tank(#11197-)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Jet Sensor
| 01***65 | Screw | 4 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Pump To Valve Piping (1/3)
| 01***30 | Bolt,(For Mechanical Governor) | 16 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***30 | Bolt, Tension Adjustment | 4 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Pump To Valve Piping (2/3)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Pump To Valve Piping (3/3)
| 01***30 | Bolt,(For Mechanical Governor) | 16 |
| 01***55 | Bolt,(10m) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Relief Valve
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 07***16 | O-Ring | 1 |
| 07***16 | Ring, Back-Up | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Return And Oil Cooler Piping (1/3)
| 01***20 | Screw | 4 |
| 01***11 | Nut,(With Under Mirror) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Return And Oil Cooler Piping (2/3)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***95 | Bolt, Mount Tube To Transmission | 2 |
| 01***11 | Nut,(With Under Mirror) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Return And Oil Cooler Piping (3/3)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***70 | Bolt, Mount Bracket And Oil Inlet Tube, Bolt | 2 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Safety Valve
| 07***34 | O-Ring,Transmission And Steering Case | 1 |
| 70***00 | Valve Ass'Y | 1 |
| 70***20 | O-Ring | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Servo Cylinder (1/4)
| 01***80 | Bolt | 4 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
| 07***09 | O-Ring,(F4350-61a0 -33 ) | 3 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Servo Cylinder (2/4)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
| 07***09 | O-Ring,(F4350-61a0 -33 ) | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Servo Cylinder (3/4)
| 07***23 | O-Ring,(F4320-61a0 -29 ) | 2 |
| 07***07 | Plug,Housing No.2?3?4?5?6 | 2 |
| 70***00 | Nc Valve Ass'Y | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Servo Cylinder (4/4)
| 70***00 | Co Valve Ass'Y | 1 |
| (7***1) | Servo Cylinder A | 1 |
| (7***0) | Hydraulic Pump Ass'Y | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Shuttle Valve (Assist For Swing)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***50 | Bolt (Kit) | 2 |
| 01***40 | Bolt | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Slow Return Valve (Variable Type)
| 01***55 | Bolt, Mount Lh Bracket | 4 |
| 01***65 | Bolt, Mount Radiator To Frame (Bottom) | 4 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Suction And Safety Valve : Unit_02_of_03
| 07***34 | O-Ring,Transmission And Steering Case | 1 |
| 07***34 | O-Ring,See Fig. K4010-65a0 | 1 |
| 70***70 | Spring | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Suction And Safety Valve : Unit_03_of_03
| 07***34 | O-Ring,Transmission And Steering Case | 1 |
| 07***34 | O-Ring,See Fig. K4010-65a0 | 1 |
| 70***70 | Spring | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Suction And Safety Valve : Unit_01_of_03
| 07***34 | O-Ring,Transmission And Steering Case | 1 |
| 07***34 | O-Ring,See Fig. K4010-65a0 | 1 |
| 70***70 | Spring | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Suction Valve
| 07***34 | O-Ring,Transmission And Steering Case | 1 |
| 07***34 | O-Ring,(F2310-59a0 -4 ) | 1 |
| 70***70 | Spring | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : T.C.C. Valve
| 07***23 | O-Ring,(F4320-61a0 -29 ) | 3 |
| 07***07 | Plug,Housing No.2?3?4?5?6 | 3 |
| 70***00 | T.C.C. Valve Ass'Y | 1 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Tank To Pump Piping (1/2)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***40 | Bolt,(With Service Valve R.H.) | 8 |
Komatsu : Pc300-2(S/N 11001-Up) : Work Equipment Control System : Tank To Pump Piping (2/2)
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
| 01***95 | Bolt, Mount Tube To Transmission | 8 |
| 01***55 | Bolt,(For Reinforced Type) | 8 |
PC300-2(S/N 11001-UP) serial number reference
The factory PIN or serial plate is riveted to the right-hand side of the cab on the lower frame, often behind the front idler or beneath the operator window. The serial is also stamped directly into the chassis frame casting on the right-hand side; cross-check the riveted plate against the engraved frame number to verify integrity. To read the prefix, identify the first two characters (e.g., 'PC') which denote the equipment family.
| Prefix | Identifies | Notes |
|---|---|---|
| PC | Standard/LC (Long Carriage) | Identifies the hydraulic crawler excavator family. The numeric '300' indicates a 30-tonne class machine. The 'PC' prefix denotes a crawler-mounted hydraulic excavator. |
Frequently asked questions
What engine is used in the PC300-2?
The specific engine designation for the PC3/N 11001-UP is not documented for this exact serial range — verify with your dealer.
What is the operating weight of this machine?
The operating weight varies by configuration and attachment package; documented ranges for the PC300 series include approximately 35,610 lb to 36,214 kg (78,500 lb to 79,807 lb).
What model replaced the PC300-2?
Subsequent generations such as the PC300-7 and PC300-8 series follow the PC300-2 in the Komatsu excavator lineage.
What PC300-2(S/N 11001-UP) owners discuss
What are the common causes of hydraulic power loss or slow movement on a PC300?
Loss of digging power is typically caused by hydraulic pressure escaping rather than engine horsepower loss. Common causes include relief valves opening too early due to wear or debris, internal leakage in the main control valve, and cylinder piston seal bypass where oil crosses the piston internally. Worn main pumps are also a common cause, often presenting as good performance when cold but weakness after 20–30 minutes of operation. Additionally, suction restrictions from clogged screens or collapsed hoses can starve the pump and cause noisy hydraulics.
How can I diagnose if the issue is the main pump or a valve problem?
If all hydraulic movements have stopped, check the pilot pressure first. If there is at least 3/2.1 MPa (300 PSI) at the pump output via a manual gauge, the pilot pressure reducing valve may be the culprit rather than the pump itself. For single-function weakness (e.g., only boom or only bucket), look for localized valve wear or cylinder leaks. If the machine feels 'lazy' or pressure builds late, inspect the load-sensing (LS) lines for leaks or blockages.
What are the typical symptoms of a failing hydraulic oil cooler on this series?
A failing hydraulic oil cooler typically manifests as sluggish, delayed, or weaker hydraulic movements, particularly after extended operation. This is distinct from engine oil overheating, which usually triggers an engine temperature or oil pressure warning.
What electrical symptoms should I look for when troubleshooting a PC300?
The machine uses electronic control systems that can trigger multiple warnings from a single faulty sensor. For swing function issues, check the wiring to the solenoid, as this is a common cause of stuck swing brakes. Additionally, a small computer mounted behind the cab uses red and green diodes for troubleshooting; if these lights do not function, it indicates wiring harness problems.
What engine-related starting issues are reported for PC300 models with Cummins engines?
On units equipped with a Cummins 8.3L Common Rail engine, difficulty starting or engine stalling may occur if an injector shows a short or open code. If the machine will not start unless the fuel pump is unplugged, check the fuel pump relay and wiring for shorts or stuck contacts that may be causing over-pressurization.
What should I check when buying a used Komatsu PC300-2 (S/N 11001-UP)?
Verify the hydraulic service history, specifically looking for metal flakes in the filters which indicate pump wear. Check for signs of internal cylinder bypass by performing a cap-test. Inspect the final drives; while generally reliable, finding replacement parts for broken differential units can be difficult. Finally, confirm the exact serial-prefix specification sheet and installed attachment package, as configurations like long sticks or auxiliary hydraulics change operating weights and reach.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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