Komatsuhydraulic excavatorsmall ( - pc90)
Komatsu PC75R-2(S/N 22E5200001-Up)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC75R-2 is a crawler midi excavator manufactured from 1999 to 2007. It operates in the 7.16 to 7.95 ton class with a net engine power of 51 kW (68 HP). The machine features a compact design with a transport length of 5.875 meters and a width of 2.05 meters. Configurations include monoboom or two-piece boom options, short or long digging arms, and track choices of 450, 500, or 600 mm steel tracks or 450 mm rubber tracks. It succeeded the PC75-1 and was followed by the PC78MR-6.
The PC75R-2 introduced the Closed Load Sensing System (CLSS) for improved hydraulic control and productivity. Its compact dimensions and reduced track gauge allowed access to tight spaces inaccessible to larger models. In the used market, it remains relevant due to its versatility for landscaping and utility work. The machine's durability and availability of parts sustain its value, though serial range differences affect specific component compatibility.
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 PC75R-2(S/N 22E5200001-Up) specifications
Engine
| Model | Komatsu 4D98E-1FB |
| Net Power | 51 kW (68 HP) |
| Displacement | 3.3 L |
| Emissions Tier | Varies by configuration/series |
Weights
| Operating Weight | 7,160–7,950 kg (15,785–17,527 lb) |
| Ground Pressure | Varies by configuration/series |
| Transport Weight | 7,600 kg (16,755 lb) |
Dimensions
| Transport Length | 5.875 m (19 ft 3 in) |
| Transport Width | 2.05 m (6 ft 9 in) |
| Transport Height | 2.69 m (8 ft 9 in) |
| Track Shoe Width | 450 mm |
| Undercarriage Length | Varies by configuration/series |
Performance
| Max Dig Depth | 4.25 m (13 ft 8 in) |
| Max Reach at Ground | 7.77 m (25 ft 5 in) |
| Max Dump Height | Varies by configuration/series |
| Max Cutting Height | Varies by configuration/series |
| Swing Speed | 10.2 RPM |
| Travel Speed | Varies by configuration/series |
| Gradeability | Varies by configuration/series |
| Drawbar Pull | Varies by configuration/series |
Forces
| Bucket Digging Force | Varies by configuration/series |
| Stick/Arm Digging Force | Varies by configuration/series |
Service capacities (summary)
| Fuel Tank | Varies by configuration/series |
| Hydraulic System/Tank | Varies by configuration/series |
| Engine Oil | Varies by configuration/series |
| Cooling System | Varies by configuration/series |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu PC75R-2(S/N 22E5200001-Up) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the PC75R-2(S/N 22E5200001-Up) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor hydraulic oil condition using Komatsu KOWA analysis. Check hydraulic oil level at the sight glass when the boom is lowered. Inspect the hydraulic tank breather cap every 2000 hours. Analyze engine oil for wear metals to detect internal component degradation. Check coolant concentration to prevent corrosion in the aluminum heat exchangers. Monitor fuel water separator for contamination to protect the injection system.
Corrective & Common Repairs
Address hydraulic hose leaks by inspecting ORFS couplings for damage. Replace worn track shoes to maintain proper ground pressure and undercarriage life. Fix boom cylinder seal leaks to prevent fluid loss and contamination. Replace the air cleaner element if differential pressure indicators show clogging. Repair electrical connector corrosion to resolve fault codes. Replace the fuel filter to restore engine performance.
Overhaul & Rebuild Points
Rebuild the hydraulic pump if flow or pressure drops below specifications. Inspect the swing bearing for play or noise and replace if necessary. Overhaul the engine if valve clearance exceeds limits or compression is low. Replace the turbocharger if shaft play is excessive or oil consumption is high. Rebuild the hydraulic cylinders if rod scoring or seal failure occurs. Inspect the final drive gears for wear during major service intervals.
Seasonal & Environment Servicing
Check antifreeze protection level before winter to prevent coolant freezing. Inspect the battery for charge retention in cold temperatures. Clean radiator and oil cooler fins to prevent overheating in dusty environments. Use low-viscosity hydraulic oil in cold weather to ensure proper flow. Check track tension to prevent slippage on wet or muddy ground. Inspect the cabin heater and defroster for operator comfort and visibility.
PC75R-2(S/N 22E5200001-Up) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| YM102103-55520 | O-Ring,(For Fuel Filter) | Fuel system service | Check fitment → |
| YM129470-55610 | Body, Fuel Filter | Fuel system service | Check fitment → |
| 21D-60-11170 | Oil Filter, Assembly | Lubrication service | Check fitment → |
| YM121850-55710 | Element | Scheduled service item | Check fitment → |
| YM119000-55600 | Filter Element | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC75R-2(S/N 22E5200001-Up) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor failure | Faulty Ne speed sensor, broken wiring, or corroded connector at the pin connector. | Replace the speed sensor and verify voltage at the pin connector. |
| CA111 | Internal engine controller fault | Critical internal failure of the Electronic Control Module (ECM). | Replace or reprogram the ECM. |
| CA441 | Battery voltage too low | Weak battery, faulty alternator, or poor connections. | Replace the alternator or battery; check the voltage regulator. |
| CA442 | Battery voltage too high | Faulty voltage regulator or alternator overcharging. | Replace the alternator or battery; check the voltage regulator. |
| CA122 | Intake air pressure high voltage | Intake pressure sensor malfunction or actual overpressure condition. | Verify the intake pressure sensor and wiring. |
| CA123 | Intake air pressure low voltage | Sensor short or airflow restriction in the intake system. | Check for a sensor short or an airflow restriction. |
| CA153 | Intake air temperature sensor error | Faulty Intake Air Temperature (IAT) sensor. | Replace or test the IAT sensor. |
| CA154 | Intake air temperature sensor error | Faulty Intake Air Temperature (IAT) sensor. | Replace or test the IAT sensor. |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse. | Verify throttle calibration, engine load cycle, or operator misuse. |
| CA451 | Common rail pressure sensor feedback value too high | Malfunction in the rail sensor or actual overpressure condition. | Diagnose the fuel rail pressure sensor or pump lines. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
PC75R-2(S/N 22E5200001-Up) attachments & work tools
Buckets
Factory specifications list a standard bucket capacity of 0.13 to 0.46 m³ (0.17 to 0.60 cu yd) with a typical width of 0.8 m (2.6 ft). The primary work tool bucket has a capacity of 0.25 m³ (0.33 cu yd) and a width of 0.8 m (2.6 ft). Bucket configurations vary by application, including options for low-impact materials, abrasive mixed dirt, and rock excavation.
Hydraulic hammers
The machine supports hydraulic breakers with a typical weight class of 1.5 to 2.5 t (3,300 to 5,500 lb), matching the 7.16 to 7.95 t (15,800 to 17,500 lb) operating weight range. The CLSS hydraulic system allows adjustment of flow-rate and pressure to accommodate various breaker specifications. Authorized optional equipment includes arrangements for the installation of demolition hammers.
Quick couplers
The PC75R-2 is equipped with options for both hydraulic quick hitch and mechanical quick hitch systems. These attachments facilitate the rapid switching between buckets, hammers, and other tools. The specific mounting interface dimensions vary by configuration and series.
Thumbs/grapples
The machine is compatible with auxiliary attachments such as thumbs and grapples to enhance versatility for landscaping and material handling. These tools utilize the adjustable auxiliary hydraulic lines for operation. Specific mounting hardware and hydraulic circuit requirements vary by configuration and series.
Rippers
Single-tooth ripper attachments are available for the PC75R-2 class to assist in breaking up compacted ground or rock. These tools require auxiliary hydraulic flow and pressure adjustments. Compatibility and mounting details vary by configuration and series.
Hydraulic-kit notes
The PC75R-2 utilizes a Closed Load Sensing System (CLSS) hydraulic circuit. The auxiliary lines feature adjustable flow-rate and pressure settings to support various attachment specifications. Operators must select between 'Power' and 'Economy' hydraulic modes to optimize performance for specific tool requirements.
All PC75R-2(S/N 22E5200001-Up) assemblies by section
Every catalogued assembly group for the Komatsu PC75R-2(S/N 22E5200001-Up). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Control System And Revolving Frame
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Counter Weight (Optional)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***90 | Bolt | 3 |
| 01***10 | Bolt (Itl) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Fuel Control Lever
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (2nd Boom Ppc Valve Line)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 14***10 | Pedal Cap | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (Arm And Swing Ppc Valve Line) (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Screw | 4 |
| 21***80 | Union | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (Arm And Swing Ppc Valve Line) (2/2)
| 21***60 | O-Ring | 2 |
| 21***50 | Hose | 1 |
| 21***60 | Hose | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (Blade Valve Line)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 21***30 | Nut | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (Boom And Bucket Ppc Valve Line) (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Screw | 4 |
| 21***80 | Union | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (Boom And Bucket Ppc Valve Line) (2/2)
| 21***10 | Union Tee | 1 |
| 21***60 | O-Ring | 3 |
| 21***30 | Hose | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (Boom Swing Ppc Valve Line)
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (Travel Ppc Line) (1/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 21***30 | Elbow | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Hydraulic Piping (Travel Ppc Line) (2/2)
| 21***80 | Union | 2 |
| 21***70 | Union | 1 |
| 21***50 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Revolving Frame
| 01***60 | Bolt, Mount Pole | 4 |
| 22***10 | Rubber | 1 |
| 22***10 | Counter Weight | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Control System And Revolving Frame : Servocontrol System Starting Lever
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 21***30 | Switch | 1 |
| 21***20 | Nut | 1 |
Engine
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Air Intake Manifold
| YM***00 | Manifold,Air Intake | 1 |
| YM***21 | Gasket (Kit) | 1 |
| YM***52 | Screw | 9 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Camshaft And Driving Gear
| YM***00 | Idle Gear Ass'Y | 1 |
| YM***00 | Tappet Rod | 8 |
| YM***50 | Bearing, Thrust | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Cooling Water System
| 21***60 | Water Temperature Transmitter (Instrument) | 1 |
| YM***40 | Fan, Cooling | 1 |
| YM***90 | Valve,Water Drain | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Crankshaft And Piston
| YM***50 | Ring Set (+0.25 mm) | 4 |
| YM***00 | Crankshaft, Assembly | 1 |
| YM***80 | Flywheel, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Cylinder Block
| YM***60 | Cylinder Block, Assembly | 1 |
| YM***00 | Screw | 18 |
| YM***00 | Main Metal Ass'Y (Std) | 5 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Cylinder Head
| 22***00 | Engine, Assembly | 1 |
| YM***80 | Retainer, Spring | 0 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Engine Stop Device
| YM***00 | Pin, Cotter | 2 |
| YM***20 | Link | 1 |
| YM***00 | Coil | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Exhaust Manifold And Muffler
| YM***02 | Bolt Plated | 2 |
| YM***00 | Muffler | 1 |
| YM***02 | Nut | 6 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Feed Pump
| YM***40 | Gasket | 4 |
| YM***60 | O-Ring | 2 |
| YM***00 | Screw | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Flywheel - Lubricating Oil Sump
| 21***30 | Gasket (Only For Tbg) | 1 |
| 22***10 | Valve (Only For Tbg) | 1 |
| 22***20 | Union (Only For Tbg) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Fuel Injection Line
| YM***02 | Bolt Plated | 1 |
| YM***50 | Nozzle | 4 |
| YM***40 | Injection Pipe N. 4 | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Fuel Injection Pump
| YM***00 | Segment | 4 |
| YM***00 | Gasket Disc | 4 |
| YM***20 | Valve,Delivery | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Fuel Line
| YM***02 | Screw | 1 |
| YM***90 | Pipe L=500 | 2 |
| YM***10 | Banjo Fitting | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Gasket Set
| YM***40 | Seal,Valve? Exhaust (Kit) | 4 |
| YM***01 | Gasket (Kit) | 2 |
| YM***70 | O-Ring (Kit) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Gear Housing
| YM***02 | Bolt Plated | 3 |
| YM***02 | Screw | 10 |
| YM***02 | Screw | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Generator
| YM***41 | Cover, Rear | 1 |
| YM***50 | Cable | 1 |
| YM***80 | Pulley | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Governor
| YM***40 | Screw | 2 |
| YM***00 | Nut | 1 |
| YM***00 | Screw | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Lubricating Oil Pump
| YM***40 | Stud | 1 |
| YM***81 | Retainer | 1 |
| YM***50 | Oil Pressure Transmitter | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine : Starter Motor
| YM***80 | Holder Brush, Assembly | 1 |
| YM***10 | Retainer | 1 |
| YM***20 | Shift Lever Ass'Y | 1 |
Engine Related Parts And Electrical System
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Air Cleaner And Mounting
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 8 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 10 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Battery
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Dashboard, R.H.
| 20***30 | Starting Switch,Starting | 1 |
| 21***60 | Switch, Switch | 2 |
| 21***10 | Bulb | 9 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Electrical System (Engine Line)
| 01***30 | Bolt | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Electrical System (Fuse And Line)
| 01***16 | Screw | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 21***10 | Connector | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Electrical System (Light And Service Line) (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 21***60 | Reflex Reflector | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Electrical System (Light And Service Line) (2/2)
| 01***14 | Bolt | 2 |
| 01***20 | Bolt,(Without Maintenance Monitor) | 2 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***40 | Bolt | 4 |
| 01***35 | Screw | 16 |
| 01***60 | Flat Washer - M20 (Hardened) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Fuel Piping (1/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Fuel Piping (2/2)
| 01***70 | Bolt (Op) | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
| 21***81 | Cock | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Left Dashboard
| 21***30 | Screw | 5 |
| 21***30 | Screw | 3 |
| 21***10 | Screw | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Muffler And Piping
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***20 | Bolt | 3 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Power Take Off
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***30 | Screw | 12 |
| 21***80 | Washer,Spring | 12 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Radiator
| 01***20 | Bolt,(Without Maintenance Monitor) | 3 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***60 | Bolt, Tube To Oil Cooler | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Engine Related Parts And Electrical System : Self Fuel Supply Pump
| 01***14 | Bolt | 4 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
| 21***80 | Filter | 1 |
Guard And Operator'S Cab
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Cabin (1/6)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Cabin (2/6)
| 01***04 | Nut,(For Air Conditioner Less) | 4 |
| 01***08 | Washer,(For Fixed Type Ripper) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Cabin (3/6)
| 01***25 | Bolt,(For Automatic) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 10 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 9 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Cabin (4/6)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Cabin (5/6)
| 21***40 | Ring, Snap | 8 |
| 21***30 | Spacer | 16 |
| 21***10 | Roof Hatch, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Cabin (6/6)
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Control Valve Side Cover
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***40 | Screw | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Electrical System (Operator'S Cab)
| 01***30 | Bolt | 1 |
| 01***14 | Screw | 3 |
| 01***04 | Nut,(For Air Conditioner Less) | 3 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Engine Side Cover
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***40 | Bolt,(With Air Conditioner) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Floor Plate (1/2)
| 01***25 | Bolt,Without Revolution Sensor | 10 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***10 | Bolt (Itl) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Floor Plate (2/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 8 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Heating System (1/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Heating System (2/2)
| 21***60 | Hose-Clamp | 1 |
| 21***60 | Hose-Clamp | 5 |
| 21***10 | Air Intake | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : L.H. And R.H. View Mirror (Optional)
| 01***20 | Screw | 4 |
| 01***25 | Screw | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Operator'S Cab (Equipment)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
| 01***23 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Operator'S Seat
| 01***14 | Screw | 4 |
| 01***80 | Screw | 2 |
| 21***60 | Washer,Spring | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Revolving Frame Under Cover
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 25 |
| 01***32 | Washer,(With Auto Emergency Steering) | 25 |
| 21***60 | Gasket | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Sound-Proofing
| 21***20 | Rabbet | 33 |
| 21***30 | Sheet | 1 |
| 21***80 | Sheet | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Guard And Operator'S Cab : Top And Front Guard (Cab)
| 01***55 | Bolt, Mount Tube To Switch Pump | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***65 | Bolt, Mount Radiator To Frame (Bottom) | 2 |
Mark Plate
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Mark Plate : Mark Plate
| 22***40 | Mark Plate, Lifting Capacity (With 1-Piece Boom) | 1 |
| 22***50 | Mark Plate, Lifting Capacity (With 2-Piece Boom) | 1 |
| 22***80 | Mark Plate, Hammer - Rotating And Cutting Shovel | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Mark Plate : Tools
| 21***70 | Wrench | 1 |
| 21***40 | Wrench, Strainer | 1 |
| 21***50 | Fitting | 1 |
Swing Circle And Final Drive
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Swing Circle And Final Drive : Swing Circle
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***80 | Bolt,(For Adjustable Rod) | 3 |
| 01***90 | Bolt | 36 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Swing Circle And Final Drive : Swing Machinery (1/2)
| 04***12 | Ring, Snap (4) | 6 |
| 07***65 | Seal,Oil Output Shaft | 1 |
| 07***00 | Fitting, Grease (Steering Cylinder) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Swing Circle And Final Drive : Swing Machinery (2/2)
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 10 |
| 01***00 | Bolt, Mount Back-Up Alarm | 12 |
| 01***32 | Washer,(With Auto Emergency Steering) | 12 |
Under Carriage
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Carrier Roller
| 21***10 | Shaft | 1 |
| 21***20 | Collar | 1 |
| 21***40 | Gasket, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Front Idler
| 21***80 | Plug | 1 |
| 21***50 | O-Ring | 2 |
| 21***50 | Spring Pin | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Recoil Spring (For Rubber Shoe)
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 4 |
| 01***10 | Bolt (Op) | 2 |
| 21***00 | Spring Washer | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Recoil Spring (For Steel Shoe)
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 4 |
| 01***10 | Bolt (Op) | 2 |
| 21***00 | Spring Washer | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Sprocket
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 24 |
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 24 |
| 21***20 | Washer | 24 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Track Roller
| 01***70 | Bolt, Accumulator Mounting Bracket | 40 |
| 21***80 | Plug | 1 |
| 21***30 | O-Ring | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Track Shoe (For Rubber Shoe (L=450)
| 22***60 | Rubber Shoe, Assembly | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Track Shoe (L=450 Mm)
| 21***90 | Screw | 168 |
| 21***10 | Nut | 168 |
| 22***11 | R.H. Track Shoe, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Track Shoe (L=500 Mm)
| 21***90 | Screw | 168 |
| 21***10 | Nut | 168 |
| 22***31 | R.H. Track Shoe, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Track Shoe (L=600 Mm)
| 21***90 | Screw | 168 |
| 21***10 | Nut | 168 |
| 22***51 | Track Shoe, Assembly | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Under Carriage (For Rubber Shoe)
| 01***20 | Bolt,(With Auto Emergency Steering) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
| 01***10 | Bolt (Itl) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Under Carriage : Under Carriage (For Steel Shoe)
| 01***20 | Bolt,(With Auto Emergency Steering) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 12 |
Work Equipment
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : 1st Boom
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 21***20 | Bushing | 2 |
| 21***40 | Spacer | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : 2nd Boom
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***10 | Bolt,(Noise Suppression Spec.) | 2 |
| 20***40 | Spacer? 1.0mm | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : 2nd Boom Cylinder, L.H.
| 01***25 | Screw | 8 |
| 21***10 | Screw | 6 |
| 21***80 | Nut | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : 2nd Boom Cylinder, R.H.
| 01***25 | Screw | 8 |
| 21***10 | Screw | 6 |
| 21***80 | Nut | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Arm Cylinder
| 01***25 | Screw | 8 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
| 21***10 | Screw | 6 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Arm Cylinder (For 2-Piece Boom)
| 01***25 | Screw | 8 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
| 21***10 | Screw | 6 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Arm, L=1700 Mm
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 20***40 | Spacer? 1.0mm | 4 |
| 21***10 | Bushing | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Arm, L=2100 Mm
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 20***40 | Spacer? 1.0mm | 4 |
| 21***10 | Bushing | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Blade Cylinder
| 01***30 | Screw | 8 |
| 21***90 | Flange | 1 |
| 21***10 | Screw | 12 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Blade L=2050 Mm
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Blade L=2250 Mm
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Boom
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***40 | Screw | 1 |
| 20***40 | Spacer? 1.0mm | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Boom Cylinder
| 01***25 | Screw | 8 |
| 21***10 | Screw | 6 |
| 21***70 | O-Ring | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Boom Swing Cylinder
| 01***25 | Screw | 8 |
| 21***10 | Screw | 12 |
| 21***40 | Bushing | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Bucket
| 21***30 | Bucket, L=500 mm | 1 |
| 21***40 | Bucket, L=400 mm | 1 |
| 21***50 | Bucket, L=300 mm | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Bucket Cylinder
| 01***25 | Screw | 8 |
| 21***10 | Screw | 6 |
| 21***40 | Bushing | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Bucket Link
| 20***40 | Spacer? 1.0mm | 10 |
| 21***20 | Bushing | 2 |
| 21***10 | Bushing | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Hydraulic Piping (Attachment Line)
| 21***10 | Union | 2 |
| 21***80 | O-Ring | 1 |
| 21***90 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Hydraulic Piping (Attachment Line) (Arm Side)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 21***60 | O-Ring | 7 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Hydraulic Piping (Attachment Line) (Boom Side)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***45 | Bolt, Bracket Mounting | 2 |
| 21***80 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Hydraulic Piping (Attachment Line) (For 2-Piece Boom) (Boom Side)
| 21***80 | O-Ring | 3 |
| 21***90 | O-Ring | 3 |
| 22***60 | Union, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Hydraulic Piping (Attachment Line) (Optional Cock)
| 21***60 | O-Ring | 1 |
| 21***80 | O-Ring | 1 |
| 21***90 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Hydraulic Piping (Blade Line) (Lower)
| 21***70 | O-Ring | 2 |
| 21***10 | O-Ring ` | 2 |
| 21***70 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Hydraulic Piping (Fast Coupling Line)
| 20***40 | Spacer? 1.0mm | 4 |
| 21***80 | Pin | 2 |
| 21***80 | Elbow | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Hydraulic Piping Hammer
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***50 | Screw | 4 |
| 01***25 | Bolt, Seal Cover Mounting | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment : Swing Bracket
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 3 |
| 01***40 | Bolt,(With Center Guard) | 2 |
Work Equipment Control System
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (1/7)
| 01***30 | Screw | 34 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 34 |
| 57***20 | O-Ring | 17 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (2/7)
| 07***20 | O-Ring,Cover? Transfer Case | 8 |
| 07***10 | O-Ring,Plate | 7 |
| 07***12 | O-Ring, Divider Valve Mounting | 3 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (3/7)
| 07***20 | O-Ring,Cover? Transfer Case | 1 |
| 07***10 | O-Ring,Plate | 1 |
| 07***34 | O-Ring,(For Front Attachment) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (4/7)
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***07 | O-Ring - (K10) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (5/7)
| 07***09 | O-Ring,(For Dual Tilt Dozer) | 1 |
| 07***16 | O-Ring,Suction And Relief Valve | 1 |
| 07***09 | Ring,Back-Up (Kit) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (6/7)
| 07***07 | O-Ring - (K10) | 2 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 1 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (7/7)
| 01***30 | Screw | 4 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 4 |
| 07***20 | O-Ring,Cover? Transfer Case | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (For 2-Piece Boom)
| 01***30 | Screw | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 4 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Control Valve (Safety Valve)
| 72***00 | Safety Valve | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (2nd Boom Cylinder Line) : Unit_01_of_02
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***35 | Bolt, Mount Bracket To Floor | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (2nd Boom Cylinder Line) : Unit_02_of_02
| 01***35 | Bolt, Stopper | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (2nd Boom Cylinder Line) (Safety Valve)
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
| 21***30 | Hose-Clamp | 2 |
| 21***70 | O-Ring | 3 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Arm Cylinder Line)
| 01***55 | Bolt,(10m) | 3 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Arm Cylinder Line) (For 2-Piece Boom)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 21***20 | O-Ring | 1 |
| 21***60 | O-Ring | 6 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Arm Cylinder Line) (Safety Valve)
| 01***80 | Bolt,(For Long Lever Control) | 4 |
| 01***30 | Screw | 4 |
| 21***60 | Hose-Clamp | 20 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Blade Line) (Upper)
| 21***70 | O-Ring | 2 |
| 21***30 | O-Ring | 1 |
| 21***70 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Cylinder Line)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 8 |
| 21***60 | O-Ring | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Cylinder Line) (Safety Valve)
| 01***25 | Screw | 4 |
| 01***30 | Screw | 8 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Cylinder Line) (With 2-Piece Boom)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 8 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Swing Line)
| 21***60 | Hose-Clamp | 1 |
| 21***70 | O-Ring | 1 |
| 21***30 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 4 |
| 01***35 | Bolt, Mount Bracket To Floor | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line) (For 2-Piece Boom)
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 8 |
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
| 21***60 | O-Ring | 5 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line) (Safety Valve) : Unit_02_of_02
| 21***60 | O-Ring | 2 |
| 21***70 | O-Ring | 2 |
| 21***70 | O-Ring | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line) (Safety Valve) : Unit_01_of_02
| 21***60 | O-Ring | 2 |
| 21***70 | O-Ring | 2 |
| 21***70 | O-Ring | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Delivery Line)
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 3 |
| 01***35 | Screw | 4 |
| 01***30 | Screw | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Drain Line) (1/2)
| 21***30 | Elbow | 2 |
| 21***50 | Union | 1 |
| 21***30 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Drain Line) (2/2)
| 21***90 | Union | 1 |
| 21***50 | Union | 1 |
| 21***50 | Elbow | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Mode System - Load Sensing)
| 21***90 | Union | 1 |
| 21***20 | Elbow | 1 |
| 21***10 | O-Ring | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Oil Cooler And Return Line)
| 21***60 | Union | 1 |
| 21***40 | Elbow | 1 |
| 21***40 | Union | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Overload Sensor Line)
| 01***40 | Screw | 2 |
| 21***00 | Elbow | 2 |
| 21***10 | Union Tee | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Ppc Valve Delivery Line)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***20 | Screw | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Ppc Valve Return Line)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Suction Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***35 | Screw | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Swing Motor Line)
| 21***90 | Union | 1 |
| 21***70 | O-Ring | 1 |
| 21***30 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Travel Line) (1/2)
| 21***70 | O-Ring | 4 |
| 21***30 | O-Ring | 1 |
| 21***70 | O-Ring | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Travel Line) (2/2)
| 21***20 | O-Ring | 1 |
| 21***70 | O-Ring | 2 |
| 21***70 | O-Ring | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Piping (Travel Speed)
| 21***90 | Union | 1 |
| 21***40 | Elbow | 2 |
| 21***30 | Plug | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Pump (1/4)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
| 04***12 | Ring, Snap | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Pump (2/4)
| 01***05 | Nut,(For Air Conditioner Less), Nut | 1 |
| 04***18 | Bolt,(With Main Clutch Cooler) (D60p) | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Pump (3/4)
| 04***20 | Ring, Snap | 1 |
| 70***80 | Cylinder Block, Assembly | 1 |
| 70***60 | Spacer | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Pump (4/4)
| 01***06 | Nut | 1 |
| 70***40 | Pc Valve, Assembly | 1 |
| 70***30 | Ls Valve, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Hydraulic Tank
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Ppc Valve (For Travel) (1/2)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***45 | Screw | 4 |
| 01***16 | Screw (Without Radio) (1) | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Ppc Valve (For Travel) (2/2)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***55 | Screw | 2 |
| 01***12 | Screw | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Ppc Valve (Work Equipment)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***20 | O-Ring,(0202-007) | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Ppc Valve For Blade, Boom Swing, 2-Piece Boom
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 01***25 | Screw | 2 |
| 70***30 | Ppc Valve, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Ppc Valve, L.H.
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***08 | Nut (Op) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Ppc Valve, R.H.
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***08 | Nut (Op) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Servocontrol Feed Unit
| 01***16 | Screw | 2 |
| 01***25 | Screw | 2 |
| 01***40 | Screw | 4 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Swing Motor (1/2)
| 04***18 | Ring,Snap (Itl) | 1 |
| 70***81 | Swing Motor, Assembly | 1 |
| 70***50 | Engine, Assembly | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Swing Motor (2/2)
| 07***34 | O-Ring,(For Front Attachment) | 2 |
| 70***41 | Safety Valve | 2 |
| 70***10 | Plug | 2 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Swivel Joint
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 21***30 | Spring Washer | 2 |
| 21***40 | Fitting | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Swivel Joint (Mounting Parts)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 7 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Travel Motor (1/2)
| 01***30 | Screw | 8 |
| 04***93 | Ball,Steel | 2 |
| 06***03 | Bearing,Ball | 1 |
Komatsu : Pc75r-2(S/N 22e5200001-Up) : Work Equipment Control System : Travel Motor (2/2)
| 04***12 | Ring, Snap (4) | 3 |
| 04***52 | Ball,Detent | 1 |
| 07***07 | O-Ring - (K10) | 2 |
PC75R-2(S/N 22E5200001-Up) serial number reference
The PIN plate is riveted to the right-hand side of the cab on the lower frame, typically just behind the front idler or beneath the operator's window. The prefix is the first six characters of the 17-character ISO PIN (e.g., 22E520), which identifies the model family and generation.
| Prefix | Identifies | Notes |
|---|---|---|
| 22E520 | PC75R-2 (Standard) | Serial range 22E5200001-Up. Engine: Komatsu 4D98E-1FB (3.3 L, 67 hp / 51 kW). Note: Production manuals and parts catalogs often split this range at 22E5200763; verify the specific component catalog against the machine plate. |
Frequently asked questions
What engine does the PC75R-2 use?
The PC75R-2 uses a Komatsu 4D98E-1FB diesel engine with a net power of 51 kW (68 HP).
What is the operating weight of the PC75R-2?
The operating weight ranges from 7.16 to 7.95 tons (varies by configuration/series).
What replaced the PC75R-2?
The PC75R-2 was succeeded by the PC78MR-6 in Komatsu's midi excavator lineup.
What PC75R-2(S/N 22E5200001-Up) owners discuss
What engine powers the PC75R-2 (S/N 22E5200001-Up) and what are its key performance specs?
The PC75R-2 (S/N 22E5200001-Up) uses the Komatsu 4D98E-1FB engine. Net power is 51 kW (68 HP) at the rated speed. The engine provides high reserve torque and meets strict emissions standards. The machine features a Closed Load Sensing System (CLSS) hydraulic system with selectable Power and Economy modes. Hydraulic flow is 44.1 GPM (167 L/min) and swing speed is 10.2 RPM. Operating weight is approximately 16,755 lbs (7,600 kg). Transport dimensions are 5.875 m (19 ft 3 in) length, 2.05 m (6 ft 9 in) width, and 2.69 m (8 ft 9 in) height. Track width is 450 mm (17.7 in). Maximum digging depth is 13 ft 8 in (0.2 m) with a 25.5 ft (7.77 m) reach. Bucket capacity ranges from 0.18 to 0.35 cubic yards (0.14 to 0.27 cubic meters). Fuel capacity is not explicitly stated in the provided source data for this specific serial range; verify with the operation and maintenance manual for the exact tank volume. Engine oil and hydraulic fluid specifications should follow Komatsu EO, TO, or AXO standards as per the factory spec sheet. Have your dealer verify the exact fluid capacities and engine oil grade for this serial range.
What are the common hydraulic and powertrain behaviors reported for this machine?
Operators report the CLSS hydraulic system provides excellent control and responsiveness, even for less experienced users. The machine offers two hydraulic power modes: Power and Economy. Loss of performance in one travel direction, particularly when going uphill, is a known issue often linked to the shock or relief valves in the travel motors. Switching the shock valves or checking travel motor pressure can resolve directional power loss. The hydraulic system is sensitive to contamination; worn seals or contaminated fluid lead to pressure loss and poor operation. The system uses ORFS couplings for hoses, which provide better sealing and easier replacement. Hydraulic flow and pressure adjustments are possible for auxiliary lines to accommodate various attachments.
What undercarriage wear patterns and structural issues are typical for the PC75R-2?
Undercarriage wear is a primary cost factor. Tracks, rollers, sprockets, and idlers require regular inspection for uneven wear, loose tension, and cracked rollers. The machine is available with 450, 500, or 600 mm steel tracks or 450 mm rubber tracks. Structural wear is common in the boom and stick linkage. The offset boom joints on the PC75UU-2 variant are prone to wear after approximately 3,000 hours if not regularly greased. Wear often occurs in the castings rather than just the replaceable pins and bushings. Boom position sensors are frequently disabled by owners due to damage from tree limbs or debris, which can lead to operational issues if not addressed. Check for excessive play in boom, stick, and bucket pins; significant slop indicates a need for pin and bushing replacement.
What electrical and sensor quirks are common in this series?
Electrical issues often stem from damaged wiring harnesses, particularly in the boom area where limbs can rip off wires. Owners sometimes disconnect wiring, leading to missing covers and broken cab windows. A common electrical fault involves the ECU behind the seat making a ticking sound that stops after 10-15 seconds, causing loss of fuel and coolant gauge readings. This is often traced to a faulty alternator or bad earth straps. The boom position sensor system is sensitive and may fail if the boom structure is damaged. Fault codes related to the EPC system, parking brake, and engine controller power failure are displayed on the monitor. Coolant temperature sensor feedback faults (codes CA144, CA145) indicate high temperature or low voltage/short circuit issues. Check battery isolators and alternator connections if gauges behave erratically.
What should be checked when buying a used PC75R-2 (S/N 22E5200001-Up)?
Inspect the engine for hard starting, excessive smoke, or knocking. Check for oil leaks and coolant levels. Test all hydraulic functions (boom, stick, bucket, swing, travel) for smooth operation, slow response, or whining pumps. Inspect the undercarriage for uneven wear, loose track tension, and cracked rollers. Check boom, stick, and bucket pins for excessive play and inspect welds for cracks, especially around the boom base and swing area. Verify the swing motor and slew ring for grinding or clunking noises. Check the boom position sensor and wiring harness for damage. Test the alternator and earth straps if electrical gauges are erratic. Verify the machine hours and maintenance history. Check for oil leaks in the hydraulic system and fuel lines. Ensure the shock valves are functioning correctly for travel power. Have your dealer verify the exact serial number configuration and fluid specifications before purchase.
How does the PC75R-2 perform in tight spaces and what are its transport considerations?
The PC75R-2 is designed for tight spaces and hard-to-reach areas. Its compact dimensions and reduced track gauge allow access to places inaccessible to other models in its class. The machine can be transported on standard trailers due to its width of 2.05 m (6 ft 9 in). The monoboom or two-piece boom options affect transport length and reach. The machine weighs approximately 16,755 lbs (7,600 kg), which influences trailer class and bridge limits. Ground pressure is affected by the choice of track width (450, 500, or 600 mm) and track type (steel or rubber). The compact radius tail swing enhances stability and maneuverability in confined job sites.
What are the maintenance intervals and fluid specifications for the PC75R-2?
Service points are grouped under two fully-opening panels for easy ground access. Hydraulic hoses use ORFS couplings for easier replacement. Engine oil, hydraulic oil, and coolant specifications should follow Komatsu standards (EO, TO, AXO, HO). The exact fluid capacities are not explicitly stated in the provided source data for this specific serial range; verify with the operation and maintenance manual. Regular inspection of the undercarriage and hydraulic system is critical. Grease the offset boom joints regularly to prevent wear. Check the fuel system for brittle lines and replace as needed. Radiator hoses may require replacement with specific shapes and diameters. Have your dealer verify the exact maintenance intervals and fluid capacities for this serial range.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Komatsu PC75R-2(S/N 22E5200001-Up). Related factory variants of the same model family:
PC75R-2(S/N 22E5200763-Up)PC75R-2(S/N 22E5210001-Up)
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