Komatsu PC40-6(S/N 10001-UP)
Komatsuhydraulic excavatorsmall ( - pc90)

Komatsu PC40-6(S/N 10001-UP)

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu PC40-6 is a 4-ton mini excavator manufactured from 1989 to 1994. It features a compact design with a standard operating weight of approximately 9,260 lbs (4.33 tons). The machine is powered by a diesel engine and offers configurations including canopy and cab types. It succeeded the PC40-5 series and was followed by the PC40-7. The PC40-6 was designed for tight spaces, offering a transport width of 1.85 meters and a bucket capacity of 0.12 cubic meters.

The PC40-6 marked a shift in Komatsu's mini excavator lineup with its -6 generation engine and hydraulic systems. It remains relevant in the used market due to its durability and compact size, making it suitable for utility work and residential construction. Parts availability is supported by the extensive -6 series platform, though specific components like the hydraulic pump and final drives require serial number verification. The machine's legacy continues through its successors, the PC40-7 and PC40MR series, which introduced further refinements in emissions and operator comfort.

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 PC40-6(S/N 10001-UP) specifications

Engine

ModelSA6D125E
Gross Power305.8 hp (228 kW)
Power Measured @2050 rpm
Displacement673.8 cu in (11.1 L)
Cylinders6
Emissions TierNot documented for this exact serial range — verify with your dealer

Weights

Operating Weight91,271 lb (41,400 kg)
Ground Pressure11.2 psi (77.23 kPa)
Transport WeightNot documented for this exact serial range — verify with your dealer

Dimensions

Transport Length39.1 ft (11,915 mm)
Transport Width10.96 ft (3,340 mm)
Transport Height12.19 ft (3,715 mm)
Tail Swing Radius11.49 ft (3,500 mm)
Track Shoe Width23.63 in (600 mm)
Ground Clearance1.83 ft (555 mm)
Undercarriage Length (Track on Ground)13.19 ft (4,020 mm)

Performance

Max Dig Depth22.27 ft (6,785 mm)
Max Reach at Ground35.54 ft (10,830 mm)
Max Dump Height23.15 ft (7,055 mm)
Max Cutting Height33.78 ft (10,295 mm)
Swing Speed9.3 rpm
Travel Speed5.5 km/h (3.42 mph)
GradeabilityNot documented for this exact serial range — verify with your dealer
Drawbar PullNot documented for this exact serial range — verify with your dealer

Forces

Bucket Digging ForceNot documented for this exact serial range — verify with your dealer
Stick/Arm Digging ForceNot documented for this exact serial range — verify with your dealer

Service capacities (summary)

Fuel Tank605 L (159.9 gal)
Hydraulic System/Tank270 L (71.4 gal)
Engine OilNot documented for this exact serial range — verify with your dealer
Cooling SystemNot documented for this exact serial range — verify with your dealer

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

PC40-6(S/N 10001-UP) fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)Not documented for this exact serial range — verify with your dealerNot documented for this exact serial range — verify with your dealer
Cooling system5.0 liters (1.32 US gal)Super-coolant AF-NAC
Fuel tankNot documented for this exact serial range — verify with your dealerNot documented for this exact serial range — verify with your dealer
Hydraulic system total AND hydraulic tank60 liters (15.85 US gal)Komatsu EO or TO hydraulic oil
Final drive (each)Not documented for this exact serial range — verify with your dealerNot documented for this exact serial range — verify with your dealer
Swing driveNot documented for this exact serial range — verify with your dealerNot documented for this exact serial range — verify with your dealer
Pilot/other circuitsNot documented for this exact serial range — verify with your dealerNot documented for this exact serial range — verify with your dealer
Grease (spec only)N/AKomatsu grease

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

Komatsu PC40-6(S/N 10001-UP) maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and add oil if necessary.
  • Check hydraulic oil level and add oil if necessary.
  • Check coolant level and add coolant if necessary.
  • Check fuel water separator and drain water and sediment.
  • Check track tension and adjust if necessary.
  • Check all grease points and lubricate.
Every 250 h
  • Change engine oil and replace engine oil filter cartridge.
  • Check oil level in final drive case and add oil if necessary.
  • Check battery electrolyte level.
  • Replace hydraulic filter element.
  • Check fan belt tension and adjust.
Every 500 h
  • Replace fuel filter cartridge.
  • Clean and check radiator fins.
  • Clean inside of cooling system.
  • Check and adjust track tension (if equipped with rubber shoes).
  • Check rubber shoes (if equipped with rubber shoes).
Every 1,000 h
  • Change oil in swing machinery case.
  • Change oil in final drive case.
  • Check engine valve clearance and adjust.
  • Clean water separator element.
  • Check electric wirings.
Every 2,000 h
  • Change oil in hydraulic tank and clean strainer.
  • Check alternator and starting motor.
  • Check engine valve clearance and adjust.
  • Inspect hydraulic hoses for wear or damage.
  • Inspect undercarriage components for excessive wear.

Servicing the PC40-6(S/N 10001-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Monitor engine oil and hydraulic oil levels daily. Check coolant concentration and condition every 500 hours. Analyze oil samples for wear metals in the final drive and swing machinery cases at 1,000-hour intervals. Inspect the hydraulic strainer in the tank during the 2,000-hour service. Track fuel filter replacement to prevent injector issues. Use Komatsu EO or equivalent fluids for all systems.

Corrective & Common Repairs

Address track tension issues promptly to prevent undercarriage wear. Replace fan belts if tension drops below specification. Check and adjust engine valve clearance at 1,000 hours to maintain power. Inspect hydraulic hoses for leaks, especially around the control valve. Replace the fuel water separator element regularly to avoid engine stalling. Verify battery electrolyte levels to ensure reliable starting.

Overhaul & Rebuild Points

Plan for final drive oil changes every 1,000 hours to prevent gear wear. Inspect the swing circle and pinion for backlash and wear. Check the hydraulic triple gear pump for pressure loss. Evaluate the travel motor reduction gears for noise or vibration. Monitor the engine for compression loss and adjust valves as needed. Consider rebuilding the hydraulic cylinder seals if external leaks occur.

Seasonal & Environment Servicing

In cold weather, check the coolant freeze protection and use appropriate viscosity oil. Clean radiator fins frequently to prevent overheating in dusty conditions. Inspect rubber shoes for wear if equipped, and check track alignment. Drain water from the fuel tank and separator more often in humid climates. Ensure the battery is fully charged and insulated in freezing temperatures. Verify all safety lights and alarms function correctly.

PC40-6(S/N 10001-UP) common service parts

Part numberPart
20T-98-42830Plate? Caution,Fuel FilterCheck fitment →
20S-98-12230Plate? Caution,Fuel FilterCheck fitment →
09637-30661Plate? Instruction,Air Cleaner (Single Element)Check fitment →
07000-02135O-Ring,Hydraulic Oil FilterCheck fitment →
07000-02080O-Ring,Hydraulic Oil FilterCheck fitment →

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

PC40-6(S/N 10001-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
E10Engine controller power failureECM power connection fault, blown fuse, or ground wire issueInspect ECM power connections, fuses, and ground wires
E11Engine protection—output power reducedHigh coolant temperature, low oil pressure, or clogged air filterCheck coolant temperature, oil pressure, and air filter condition
E227Abnormal engine speed sensorFaulty engine speed sensor or sensor circuit failureInspect engine speed sensor and associated wiring harness
E232PC-EPC solenoid valve short circuitElectrical short in the PC-EPC solenoid valve circuitInspect solenoid valve wiring and connectors for damage
E233PC-EPC solenoid valve circuit openBroken wire or disconnected connector in the PC-EPC solenoid circuitCheck continuity of the solenoid valve circuit and connectors
E316Governor motor out of adjustmentGovernor motor mechanical misalignment or calibration driftAdjust or replace the governor motor assembly
E317Governor motor circuit openBroken wire or open connection in the governor motor circuitInspect governor motor wiring for breaks or loose connections
E318Governor motor circuit short circuitShort to ground or power in the governor motor wiringInspect governor motor wiring for chafing or shorting
E306Abnormal feedback potential circuitFaulty potentiometer or feedback sensor in the control systemTest and replace the feedback potentiometer or sensor
E308Abnormal input of fuel dialFaulty fuel control knob or sensor signal errorInspect fuel control knob and associated sensor wiring

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

PC40-6(S/N 10001-UP) attachments & work tools

Buckets

The Komatsu PC40-6 (S/N 10001-UP) is a 4-ton mini excavator with a standard bucket capacity of 0.12 cubic meters (0.16 cubic yards). Typical widths for this class range from 400 mm to 600 mm (15.7 in to 23.6 in), varying by configuration and series.

Hydraulic hammers

The Teran THH400B hydraulic breaker is a verified attachment for the Komatsu PC40/45/50 series. This class of breaker is designed for mini excavators in the 4 to 5 ton operating weight range.

Quick couplers

The PC40-6 supports both mechanical and hydraulic quick hitch systems. Factory specifications list options for quick hitch hydraulic and quick hitch mechanical configurations.

Thumbs/grapples

Hydraulic thumb attachments are available for the PC40-6, with specific models like the JMA 3-Tooth Non Progressive Hydraulic Thumb listed for the PC40-5 series which shares the same platform. Adding a thumb increases productivity and control for material handling.

Rippers

A ripper attachment is listed as a compatible component for the Komatsu PC40-6 excavator. It is categorized under attachments and fits the machine's mounting interface.

Hydraulic-kit notes

The PC40-6 utilizes a hydraulic triple gear pump system. The machine features a 60-liter (15.9 US gal) hydraulic tank capacity. Standard engine idle speed is documented at 900 +100/-0 rpm.

All PC40-6(S/N 10001-UP) assemblies by section

Every catalogued assembly group for the Komatsu PC40-6(S/N 10001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

3d95s-W-1e Engine S/N 13618-Up
Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Air Cleaner (Double Element)
60***30Cup1
60***70Baffle1
60***80Washer, Seal2
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Air Cleaner (Single Element)
09***61Plate? Instruction,Air Cleaner (Single Element)1
09***61Plate? Instruction,(French-English)1
09***61Plate? Instruction,Air Cleaner1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Air Intake Manifold And Connection
01***50Bolt,(With Corrosion Resistor)2
01***55Bolt,(With Engine Stop Motor Type)2
01***60Screw2
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Air Intake Manifold And Connection (With Dust Indicator Outlet)
01***50Bolt,(With Corrosion Resistor)2
01***55Bolt,(With Engine Stop Motor Type)2
01***60Screw2
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Alternator (35a)
60***40Alternator A. (35a),(35a)1
ND***01Bushing,Insulate1
ND***00Pulley1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Alternator And Mounting
01***30Bolt,(Water Separator Spec.)1
01***25Bolt,(With Corrosion Resistor)1
01***45Bolt1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Camshaft And Tappet
01***20Screw2
04***16Fitting Wedge1
62***00Camshaft Ass'Y1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Crankshaft
61***20Bolt1
62***00Crankshaft Ass'Y1
62***10Pulley?Non Hardening,Crank1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Cylinder Block
04***20Pin,Dowel (Welded)2
04***28Pin, Dowel - Transmission Case, Pin-Dowel2
04***08Adapter Sleeves4
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Cylinder Head
01***16Bolt, Mount Solenoid Valve4
01***32Washer,(Not Used With Emergency Str.)13
02***04Plug, Pipe1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Cylinder Head Cover
61***20Screw2
61***30Washer,(B)2
61***42Packing,Cylinder Head Cover2
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Exhaust Manifold
01***25Stud3
01***25Bolt - Relay Mounting6
62***10Manifold,Exhaust1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Feed Pump
YM***00Feed Pump Ass'Y1
YM***50Gasket,(Square Type)1
YM***20O-Ring,(Round Type)1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Flywheel And Flywheel Housing
01***40Bolt6
01***35Bolt1
01***40Bolt,Reamer6
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Front Cover And Gear
01***70Bolt,(For 75a Alternator)1
01***16Bolt2
01***20Bolt,(With Tachometer Outlet)6
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Fuel Filter And Piping
01***12Bolt,(See Fig.0501)1
01***25Bolt,(With Corrosion Resistor)2
07***12Gasket,Mechanical Pump Piping1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Fuel Injection Pump
62***21Injection Pump Ass'Y1
YM***60O-Ring,Fuel Injection Pump1
YM***70Retainer, Spring3
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Fuel Injection Pump And Piping
01***25Stud3
01***06Nut3
01***12Washer,Lock (Noise Suppression Spec.) (K2)1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Fuel Nozzle And Spill Pipe
07***10Tube,(See Fig.0421-14)2
07***28Tube,Spill1
08***10Clip,(With Corrosion Resistor)1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Gasket Kit
01***12Washer,Lock (Noise Suppression Spec.) (K2)1
07***35O-Ring,Hydraulic Oil Filter1
07***40O-Ring,Water Pump Mount2
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Governor
YM***30Label, Fuel Pump; Was Ym171353-51930, Label,Fuel Pump1
YM***10Pin,Stop Lever1
YM***90Shaft,Governor Lever1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Lubricating Oil Filter
20***51Plate? Instruction,(English) (For Melroe)1
60***30Cartridge1
60***20Plate? Caution,(Italian-English)1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Lubricating Oil Pump And Suction Pipe
01***12Bolt,(See Fig.0501)1
01***16Screw10
01***25Bolt,(With Corrosion Resistor)1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Muffler
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***06Nut4
01***16Washer,(For Shipping Parts)4
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Oil Pan(#13618-16971)
01***16Bolt, Mount Solenoid Valve24
01***16Screw24
07***16Gasket,(For Pc750-6) (See Fig.A2110)1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Oil Pan(#16972-18618)
01***16Bolt, Mount Solenoid Valve24
07***16Gasket,(For Pc750-6) (See Fig.A2110)1
62***11Pan,Oil1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Oil Pan(#18619-)
01***20Bolt,(Forwarded Individually Parts)24
07***16Gasket,(For Pc750-6) (See Fig.A2110)1
62***11Pan,Oil1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Piston And Connecting Rod
04***12Ring, Snap6
62***21Piston (S)3
62***21Piston (S)3
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Rocker Arm
01***12Bolt,(Without R.P.C.U.)1
01***65Bolt,(For Alternator Bracket Mount)4
61***30Nut6
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Starting Motor
60***50Starting Motor A.,(2.0kw)1
ND***20Starter Kit1
ND***60Bearing,Ball1
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Starting Motor And Mounting
01***25Stud1
01***35Screw1
01***10Nut,(Dust?Drip Proof? Trimming S.)2
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Komatsu : Pc40-6(S/N 10001-Up) : 3d95s-W-1e Engine S/N 13618-Up : Water Pump And Cooling Fan
01***16Screw5
01***20Screw6
01***35Screw4
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Control System And Revolving Frame
Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Arm Control Linkage (6-Way Shift Pattern Spec.)(#11899-)
01***20Bolt,(With Auto Emergency Steering)4
01***30Bolt,(For Mechanical Governor)2
01***30Bolt,(For Quick Shift) (Mitsubishi)8
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Blade Control Lever And Linkage
01***30Bolt,(For Mechanical Governor)1
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***60Bolt, Mount Tube To Switch Pump2
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Blade Control Lever And Linkage (1/2) (For Power Tilt Mech. Angle Dozer)(#11899-)
01***20Bolt,(For Quick Shift) (Mitsubishi)4
01***30Bolt,(For Quick Shift) (Mitsubishi)3
01***60Bolt, Mount Tube To Switch Pump2
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Blade Control Lever And Linkage (2/2) (For Power Tilt Mech. Angle Dozer)(#11899-)
01***20Bolt,(With Auto Emergency Steering)4
01***30Bolt,(For Mechanical Governor)2
01***25Bolt,(For Canvas Canopy?Head Guard)4
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Boom Control Linkage (6-Way Shift Pattern Spec.)(#11899-)
01***20Bolt,(With Auto Emergency Steering)4
01***30Bolt,(For Mechanical Governor)3
01***30Bolt,(For Quick Shift) (Mitsubishi)4
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Boom Swing Control Lever
01***20Bolt,(With Auto Emergency Steering)2
01***30Bolt,(For Mechanical Governor)4
01***30Bolt,(For Quick Shift) (Mitsubishi)3
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Boom Swing? Arm? Swing Control Linkage (For I.S.O. Pattern)
01***06Nut,L.H. Thread (For Russian)3
01***08Nut,(For Straight Tilt Dozer) (D65p)3
04***10Pin, Cotter3
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Boom? Bucket Control Lever (For I.S.O. Pattern) (Except Japan)
01***30Bolt,(For Mechanical Governor)2
01***30Bolt,(For Quick Shift) (Mitsubishi)4
01***06Nut,L.H. Thread (For Russian)2
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Bucket Control Linkage (6-Way Shift Pattern Spec.)(#11899-)
01***20Bolt,(With Auto Emergency Steering)7
01***30Bolt,(For Mechanical Governor)3
01***35Bolt,(For Position Fixing)2
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Contor Pedal (For Attachiment)
01***25Bolt,Without Revolution Sensor1
01***30Bolt,(For Mechanical Governor)2
01***25Bolt,(For Canvas Canopy?Head Guard)4
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Control Pedal (For Breaker Spec.)
01***25Bolt,Without Revolution Sensor1
01***30Bolt,(For Mechanical Governor)2
01***25Bolt,(For Canvas Canopy?Head Guard)4
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Fuel Control Lever And Linkage
01***16Bolt, Mount Washer Tank To Bracket, Bolt2
01***20Bolt,(Without Maintenance Monitor)2
01***16Bolt, Battery To Frame Ground Wire Attaching1
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Revolving Frame (For Breaker And Attachment)(#10001-11898)
01***20Bolt,(With Auto Emergency Steering)4
01***20Bolt,(For Quick Shift) (Mitsubishi)13
01***60Bolt, Tube To Oil Cooler6
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Revolving Frame (For Breaker And Attachment)(#11899-)
01***20Bolt,(With Auto Emergency Steering)4
01***20Bolt,(For Quick Shift) (Mitsubishi)13
01***60Bolt, Tube To Oil Cooler6
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Revolving Frame (For Moment Limit System) (Without Cab Of Except Japan)
20***12Frame,Revolving1
20***10Frame,Revolving1
(2***1)Frame Group,Revolving (For Moment System)1
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Revolving Frame(#10001-11898)
01***20Bolt,(With Auto Emergency Steering)4
01***20Bolt,(For Quick Shift) (Mitsubishi)13
01***60Bolt, Tube To Oil Cooler6
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Revolving Frame(#11899-)
01***20Bolt,(With Auto Emergency Steering)4
01***20Bolt,(For Quick Shift) (Mitsubishi)13
01***60Bolt, Tube To Oil Cooler6
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Swing Control Lever (6-Way Shift Pattern Spec.)(#11899-)
01***20Bolt,(With Auto Emergency Steering)2
01***30Bolt,(For Mechanical Governor)2
01***30Bolt,(For Quick Shift) (Mitsubishi)1
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Travel Control Lever (1/2) (6-Way Shift Pattern Spec.)(#11899-)
01***30Bolt,(For Mechanical Governor)2
01***25Bolt,(For Canvas Canopy?Head Guard)7
01***25Screw2
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Travel Control Lever (1/2) (For I.S.O. Pattern) (Except Japan)
01***30Bolt,(For Mechanical Governor)2
01***25Bolt,(For Canvas Canopy?Head Guard)5
01***25Screw2
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Travel Control Lever (2/2) (6-Way Shift Pattern Spec.)(#11899-)
01***20Bolt,(With Auto Emergency Steering)2
01***25Bolt,Without Revolution Sensor2
01***30Bolt,(For Mechanical Governor)3
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Travel Control Lever (2/2) (For I.S.O. Pattern) (Except Japan)
01***25Bolt,Without Revolution Sensor2
01***30Bolt,(For Mechanical Governor)2
01***25Washer,Spring?For Additional Rear Lam4
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Travel Speed Pedal (For I.S.O. Pattern) (Except Japan)
01***16Bolt (With Air Heater & Conditioner)2
01***30Bolt,(For Mechanical Governor)1
01***06Nut,L.H. Thread (For Russian)1
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Travel Speed Pedal And Linkage (6-Way Shift Pattern Spec.)(#11899-)
01***16Bolt (With Air Heater & Conditioner)2
01***30Bolt,(For Mechanical Governor)2
01***32Screw1
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Work Equipment Control Lever (1/2) (6-Way Shift Pattern Spec.)(#11899-)
01***16Bolt, Mount Washer Tank To Bracket, Bolt8
01***30Bolt,(Not Used With Emergency Str.)6
01***23Washer,(With Auto Emergency Steering)8
See all parts with full part numbers in Heavy Parts AI →
Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Work Equipment Control Lever (1/2) (For I.S.O. Pattern) (Except Japan)
01***25Bolt,Without Revolution Sensor2
01***35Bolt,(For Quick Shift) (Mitsubishi)2
01***30Bolt,(Not Used With Emergency Str.)3
See all parts with full part numbers in Heavy Parts AI →
Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Work Equipment Control Lever (2/2) (6-Way Shift Pattern Spec.)(#11899-)
01***40Bolt,(With Air Conditioner)2
01***35Bolt,(For Quick Shift) (Mitsubishi)5
01***60Bolt, Mount Tube To Switch Pump1
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Work Equipment Control Lever (2/2) (For I.S.O. Pattern) (Except Japan)
01***25Bolt,Without Revolution Sensor2
01***35Bolt,(For Quick Shift) (Mitsubishi)2
01***30Bolt,(Not Used With Emergency Str.)3
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Komatsu : Pc40-6(S/N 10001-Up) : Control System And Revolving Frame : Work Equipment Control Linkage (6-Way Shift Pattern Spec.)(#11899-)
01***20Bolt,(With Auto Emergency Steering)2
01***30Bolt,(For Quick Shift) (Mitsubishi)2
01***32Screw1
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Engine Related Parts And Electrical System
Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Air Cleaner Connection
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***30Washer, Spring (Supplied W/Spider Assembly), Washer-Spring4
07***09Clamp,(See Fig. K0210-16a0)3
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Battery
01***16Bolt (With Air Heater & Conditioner)2
01***16Bolt, Battery To Frame Ground Wire Attaching3
01***06Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-108062
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Battery (For Cold Terrain Spec.)
01***16Bolt, Battery To Frame Ground Wire Attaching3
01***06Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-108062
01***30Washer, Spring (Supplied W/Spider Assembly), Washer-Spring3
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Car Radio
01***12Screw,(Additional Sun Visor)8
01***25Screw,(Except Japan)2
01***13Washer,Spring(For Wiper Switch Earth)10
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Electrical System (Boom Side)
01***20Bolt,(For Quick Shift) (Mitsubishi)1
01***32Washer,(With Auto Emergency Steering)1
08***60Bulb? 60w1
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Electrical System (For Moment Limit System) (Without Cab For Except Japan)
20***70Switch,Auto Deceleration And Parking1
20***30Wire Ass'Y1
20***10Wire Ass'Y1
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Electrical System(#10001-11898)
01***12Bolt, Bolt,(No Need To Quick Shift)1
01***16Bolt, Mount Washer Tank To Bracket, Bolt2
01***16Bolt (With Air Heater & Conditioner)4
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Electrical System(#11899-)
01***12Bolt, Bolt,(No Need To Quick Shift)1
01***16Bolt, Mount Washer Tank To Bracket, Bolt2
01***16Bolt (With Air Heater & Conditioner)4
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
01***30Bolt,(For Quick Shift) (Mitsubishi)14
01***40Bolt, Mount Master Brake Cylinder2
01***35Bolt, Bolt, Mount Tubes To Switch And Work Pumps6
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Exhaust Piping
01***25Bolt,Without Revolution Sensor3
01***20Bolt,(For Quick Shift) (Mitsubishi)2
01***30Washer, Spring (Supplied W/Spider Assembly), Washer-Spring2
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping (1/2)
01***16Bolt, Battery To Frame Ground Wire Attaching3
01***30Bolt,(Not Used With Emergency Str.)4
01***16Screw,(Sandy And Dusty Terrain S.)3
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping (2/2)
01***65Bolt,R.H1
01***16Bolt, Battery To Frame Ground Wire Attaching1
01***23Washer, Wiring Harness Mounting Bracket1
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Gauge Claster
20***40Gauge Ass'Y,Cluster1
20***10Gauge Ass'Y,Cluster1
KA***00Gauge,Water Temperature1
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Instrument Panel
01***20Bolt,(Without Maintenance Monitor)3
01***35Bolt2
01***20Bolt,(With Auto Emergency Steering)3
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Instrument Panel (For Power Tilt Mech. Angle Dozer)(#11899-)
01***20Bolt,(Without Maintenance Monitor)3
01***35Bolt2
01***20Bolt,(With Auto Emergency Steering)3
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Power Take Off
01***40Bolt,Reamer6
04***12Pin,Spring (See Fig.0201)6
20***00Coupling Ass'Y1
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Radiator And Piping(#10001-11898)
01***16Bolt (With Air Heater & Conditioner)6
01***20Bolt,(With Auto Emergency Steering)4
01***25Bolt,(For Canvas Canopy?Head Guard)4
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Radiator And Piping(#11899-)
01***16Bolt (With Air Heater & Conditioner)9
01***20Bolt,(With Auto Emergency Steering)4
01***25Bolt,(For Canvas Canopy?Head Guard)4
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Komatsu : Pc40-6(S/N 10001-Up) : Engine Related Parts And Electrical System : Radiator Reservoir Tank
01***16Bolt, Mount Washer Tank To Bracket, Bolt2
01***23Washer,(With Auto Emergency Steering)2
07***37Clamp, Overflow Hose2
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Guard
Komatsu : Pc40-6(S/N 10001-Up) : Guard : Canopy
01***25Bolt,(For Canvas Canopy?Head Guard)15
01***30Bolt,(For Quick Shift) (Mitsubishi)4
01***20Bolt,(Without Rops Guard? Canopy)1
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Car Heater (For Cab)
01***25Bolt,(For Canvas Canopy?Head Guard)5
01***32Washer,(With Auto Emergency Steering)7
07***12Plug,(With Canvas Or Rops Canopy)10
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Electrical Systen (For Cab)
01***16Screw,(Sandy And Dusty Terrain S.)2
01***16Screw, Mount Parking Lights2
01***10Washer,(For Am Radio)2
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Floor (1/2)
01***20Bolt,(For Quick Shift) (Mitsubishi)4
01***80Bolt,(For Adjustable Rod)3
01***16Bolt - Starting Motor Ground Cable5
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Floor (1/2) (For Breaker And Attachment)
01***20Bolt,(For Quick Shift) (Mitsubishi)4
01***80Bolt,(For Adjustable Rod)3
01***16Bolt - Starting Motor Ground Cable5
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Floor (2/2)
01***20Bolt,(Without Maintenance Monitor)2
01***25Bolt,(For Canvas Canopy?Head Guard)9
01***10Screw, Mount Wire Assembly6
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Floor (2/2) (For Power Tilt Mech. Angle Dozer)(#11899-)
01***20Bolt,(Without Maintenance Monitor)2
01***25Bolt,(For Canvas Canopy?Head Guard)9
01***16Screw,(P.O.C. Model) (Except Japan)4
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Machinery Compartment (1/2) (For Vandalism Protection)
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***12Bolt,(With Cylinder Cover)2
01***30Bolt,(For Quick Shift) (Mitsubishi)4
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Machinery Compartment (1/2)(#10001-11898)
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***30Bolt,(For Quick Shift) (Mitsubishi)4
01***12Washer,(With Body Positioner)2
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Machinery Compartment (1/2)(#11899-)
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***12Bolt,(With Cylinder Cover)2
01***30Bolt,(For Quick Shift) (Mitsubishi)4
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Machinery Compartment (2/2)(#10001-11898)
01***30Bolt,(For Quick Shift) (Mitsubishi)4
01***30Bolt-Hex, Bolt,(With Center Guard)6
01***10Nut,(Without Air Conditioner)1
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Machinery Compartment (2/2)(#11899-)
01***20Bolt,(For Quick Shift) (Mitsubishi)3
01***30Bolt,(For Quick Shift) (Mitsubishi)4
01***30Bolt-Hex, Bolt,(With Center Guard)6
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Cab (1/4)
01***30Bolt,(For France Noise Suppression)9
01***10Bolt,(With Auto Emergency Steering)2
01***12Bolt,(With Cylinder Cover)4
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Cab (2/4)
20***20Sash Ass'Y1
20***30Sash1
20***60Glass1
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Cab (3/4)
01***08Screw2
01***08Screw4
04***12Rivet2
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Cab (4/4)
01***25Bolt,(Sandy? Dusty Terrain Spec.)10
01***16Bolt, Mount Washer Tank To Bracket, Bolt2
01***12Screw,(For Side Lamp) (Not Shown)4
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Seat (For Cab)(#10001-12140)
01***20Bolt,(For Quick Shift) (Mitsubishi)9
01***10Nut,(Without Air Conditioner)8
01***30Washer, Spring (Supplied W/Spider Assembly), Washer-Spring5
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Seat (For Cab)(#12141-)
01***20Bolt,(With Auto Emergency Steering)4
01***25Bolt,Without Revolution Sensor8
01***20Bolt,(For Quick Shift) (Mitsubishi)4
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Seat (For Canopy)(#10001-12140)
01***35Bolt,(For Position Fixing)2
01***20Bolt,(For Quick Shift) (Mitsubishi)9
01***50Bolt,(With Service Valve R.H.)2
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Seat (For Canopy)(#12141-)
01***20Bolt,(With Auto Emergency Steering)4
01***25Bolt,Without Revolution Sensor8
01***20Bolt,(For Quick Shift) (Mitsubishi)4
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Operator'S Seat (Op) (With Oil Suspension)
01***35Bolt,(For Position Fixing)4
01***20Bolt,(For Quick Shift) (Mitsubishi)8
01***25Bolt,(For Canvas Canopy?Head Guard)3
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Komatsu : Pc40-6(S/N 10001-Up) : Guard : Window Washer
01***20Bolt,(Without Maintenance Monitor)2
01***19Washer,Spring (With Extinguisher) (D31p)2
01***10Washer,(For 35a Alternator)2
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Mark Plate? Tool And Kit
Komatsu : Pc40-6(S/N 10001-Up) : Mark Plate? Tool And Kit : Marks And Plates (Arabic)
04***60Screw,Machine Model (For Ec Reg.)4
09***00Plate? Safety,Swing Lock Lever1
09***00Plate? Safety1
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Komatsu : Pc40-6(S/N 10001-Up) : Mark Plate? Tool And Kit : Marks And Plates (English)
04***60Screw,Machine Model (For Ec Reg.)4
09***00Plate? Safety,Lock Lever (With Lock Pin)1
09***00Plate? Safety,Starting And After Operating1
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Komatsu : Pc40-6(S/N 10001-Up) : Mark Plate? Tool And Kit : Tool
07***50Pump, (Bellows Type)1
07***03Cartridge - Grease1
07***45Nozzle, Grease Pump (Non-Flexible Type)1
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Swing System
Komatsu : Pc40-6(S/N 10001-Up) : Swing System : Swing Circle
01***70Bolt, Accumulator Mounting Bracket40
04***34Pin-Dowel, Pin,Dowel (For Shipping)2
07***00Fitting, Grease - Upper Hinge Pin3
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Komatsu : Pc40-6(S/N 10001-Up) : Swing System : Swing Machinery
01***35Bolt,(For Quick Shift) (Mitsubishi)4
01***00Bolt, Tube10
01***32Washer,(With Auto Emergency Steering)4
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Under Carriage
Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Front Idler
01***45Capscrew - M10 X 1.252
01***30Washer, Spring (Supplied W/Spider Assembly), Washer-Spring2
07***28O-Ring, Strainer To Control Pump Line2
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Recoil Spring
01***60Bolt, Tube To Oil Cooler8
01***27Nut2
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)8
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Sprocket
01***30Bolt,(Not Used With Emergency Str.)18
01***32Washer,(Not Used With Emergency Str.)18
20***10Sprocket2
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Swamp Shoe Related Parts
01***25Bolt,(Without Rops Guard? Canopy)4
01***35Bolt, Bolt, Mount Tubes To Switch And Work Pumps8
01***45Bolt,(For Travel Motor) (Not Show)12
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Frame
01***16Bolt, Battery To Frame Ground Wire Attaching4
01***20Bolt,(For Quick Shift) (Mitsubishi)8
01***85Bolt,(For 2nd Travel Speed) (Op)8
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Frame (For Power Tilt Mech. Angle Dozer)(#11899-)
01***20Bolt,(For Quick Shift) (Mitsubishi)8
01***45Bolt,(For Power Tilt Mech Angle)4
01***95Bolt,(For 2nd Travel Speed) (Op)8
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Roller
01***35Bolt, Hydraulic Tank Mounting20
01***45Washer,(For Travel Motor) (Not Show)20
07***28O-Ring, Strainer To Control Pump Line2
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Rooler (For Swamp Shoe) (Op)
01***35Bolt, Hydraulic Tank Mounting20
01***45Washer,(For Travel Motor) (Not Show)20
07***28O-Ring, Strainer To Control Pump Line2
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Shoe (Flat Type) (Bolt On Type)(#10735-)
01***18Nut? Shoe (Kit)346
20***00Shoe Bolt And Nut K.,(Except Swamp)1
20***10Bolt? Shoe (Kit)346
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Shoe (Flat Type) (Mono-Block Type)(#10001-10734)
20***24Track Shoe Ass'Y1
20***31Shoe Ass'Y74
20***50Pin,Regular72
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Shoe (Rubber Type)
Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Shoe (Swamp Type) (Bolt On Type) (Op)
01***18Nut? Shoe (Kit)346
20***00Shoe Bolt And Nut K.,(Except Swamp)1
20***10Bolt? Shoe (Kit)346
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Shoe (Triple Grouser With Rubber) (Bolt On Type)(#10735-)
01***10Nut,(Without Air Conditioner)592
01***32Washer,(Not Used With Emergency Str.)592
01***18Nut? Shoe (Kit)346
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Shoe (Triple Grouser With Rubber) (Mono-Block Type)(#10001-10734)
Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Shoe (Triple Grouser) (Bolt On Type)(#10735-)
01***18Nut? Shoe (Kit)346
20***00Shoe Bolt And Nut K.,(Except Swamp)1
20***10Bolt? Shoe (Kit)346
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Komatsu : Pc40-6(S/N 10001-Up) : Under Carriage : Track Shoe (Triple Grouser) (Mono-Block Type)(#10001-10734)
20***16Track Shoe Ass'Y1
20***21Track Shoe Ass'Y1
20***31Track Shoe Ass'Y1
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Work Equipment
Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Arm
01***35Bolt, Hydraulic Tank Mounting2
07***00Fitting, Grease - Upper Hinge Pin2
07***75Fitting,Grease (Without Lub. Piping)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Arm Cylinder
07***80O-Ring,Hydraulic Oil Filter1
07***75O-Ring,Cylinder Head1
07***05Bushing (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Blade
01***20Bolt,(For Quick Shift) (Mitsubishi)2
01***25Bolt,(Without Rops Guard? Canopy)4
01***32Washer,(With Auto Emergency Steering)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Blade (For Power Tilt Mech. Angle Dozer)(#11899-)
01***30Bolt,(Not Used With Emergency Str.)3
01***32Washer,(Not Used With Emergency Str.)3
01***45Washer,(For Quick Shift) (Mitsubishi)14
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Blade (Wide Spec.)
20***40Blade Ass'Y,Wide Type1
20***41Blade Ass'Y,Wide Type1
20***20Edge (Welded)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Blade Cylinder
07***00O-Ring,(F4350-65a1 -5 )1
07***95O-Ring,(Y1620-11a0a-12)1
07***00Fitting, Grease - Upper Hinge Pin1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Blade Frame (For Power Tilt Mech. Angle Dozer)(#11899-)
01***30Bolt,(Not Used With Emergency Str.)5
01***32Washer,(Not Used With Emergency Str.)5
04***55Ring,Snap8
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Boom
01***12Bolt, Bolt,(No Need To Quick Shift)4
01***12Bolt,(With Cylinder Cover)2
01***20Bolt,(For Quick Shift) (Mitsubishi)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Boom (For Breaker And Attchment)
20***10Boom Ass'Y1
20***11Boom Ass'Y1
(0***2)Bolt4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Boom Cylinder (For Cab)
01***25Bolt,(Sandy? Dusty Terrain Spec.)2
01***32Washer,(With Auto Emergency Steering)2
07***90O-Ring,(Dk029369-0020) (K2)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Boom Cylinder (For Canopy)
01***25Bolt,(Sandy? Dusty Terrain Spec.)2
01***32Washer,(With Auto Emergency Steering)2
07***90O-Ring,(Dk029369-0020) (K2)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Boom Swing Bracket
01***25Bolt,(Without Rops Guard? Canopy)3
01***30Bolt,(Not Used With Emergency Str.)1
01***35Bolt, Bolt, Mount Tubes To Switch And Work Pumps2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket 0.05m3 (Mini 0.09m3) Width 300mm
02***60Bolt (Op)2
02***15Nut (Op)2
20***10Shim Ass'Y1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket 0.05m3 (Mini 0.09m3) Width 300mm With Hook (Except Japan)
01***25Screw,(Except Japan)1
01***04Nut,(For Air Conditioner Less)2
02***60Bolt (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket 0.14m3 (Mini 0.24m3) Width 600mm (Reinforced Type)
01***65Bolt6
01***28Nut (Std)6
10***40Tooth4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket 0.14m3 (Mini 0.24m3) Width 600mm With Hook (Except Japan)
01***25Screw,(Except Japan)1
01***04Nut,(For Air Conditioner Less)2
02***60Bolt (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket 0.16m3 (Mini 0.26m3) Width 700mm
02***60Bolt (Op)2
02***15Nut (Op)2
20***10Shim Ass'Y1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket 0.16m3 (Mini 0.26m3) Width 700mm With Hook (Except Japan)
01***25Screw,(Except Japan)1
01***04Nut,(For Air Conditioner Less)2
02***60Bolt (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket Cylinder
01***11Nut,(With Under Mirror)2
01***32Washer,(With Auto Emergency Steering)2
07***80O-Ring,Hydraulic Oil Filter1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket Link
01***10Bolt,(Noise Suppression Spec.)4
01***10Nut,(Without Air Conditioner)8
07***00Fitting, Grease - Upper Hinge Pin4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Bucket? 0.13m3 (Mini 0.22m3) Width 600mm
02***60Bolt (Op)2
02***15Nut (Op)2
20***40Bucket Ass'Y1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Arm Cylinder Line) (Hoe Side)
01***25Bolt,(For Canvas Canopy?Head Guard)3
01***32Washer,(With Auto Emergency Steering)3
20***80Clamp1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Attachment Line)
01***25Bolt,(For Canvas Canopy?Head Guard)6
01***32Washer,(With Auto Emergency Steering)6
02***23O-Ring2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Blade Cylinder Line)
04***10Ring, Retaining1
07***23O-Ring,(For 2nd Travel Speed) (Op)2
07***34O-Ring,(For Without Brake Assistor)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Blade Cylinder Line) (For Power Tilt Mech. Angle Dozer)(#11899-)
04***10Ring, Retaining1
07***23O-Ring,(For 2nd Travel Speed) (Op)2
07***34O-Ring,(For Without Brake Assistor)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Boom Cylinder Line) (Hoe Side)
01***30Bolt,(For Mechanical Governor)2
01***35Bolt,(For Position Fixing)4
01***90Bolt,(Without Giant Ripper)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Breaker Line)
01***25Bolt,(For Canvas Canopy?Head Guard)6
01***32Washer,(With Auto Emergency Steering)6
02***23O-Ring2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Bucket Cylinder Line) (Hoe Side)
01***25Bolt,(For Canvas Canopy?Head Guard)8
01***32Washer,(With Auto Emergency Steering)8
20***80Hose2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Swing Cylinder Line)
01***35Bolt,(For Quick Shift) (Mitsubishi)1
01***30Washer, Spring (Supplied W/Spider Assembly), Washer-Spring1
07***23O-Ring,(For 2nd Travel Speed) (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Swing Cylinder Line) (For Power Tilt Mech. Angle Dozer)(#11899-)
01***35Bolt,(For Quick Shift) (Mitsubishi)1
01***30Washer, Spring (Supplied W/Spider Assembly), Washer-Spring1
07***23O-Ring,(For 2nd Travel Speed) (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Hydraulic Piping (Tilt Cylinder Line) (For Power Tilt Mech. Angle Dozer)(#11899-)
01***16Bolt, Battery To Frame Ground Wire Attaching3
01***35Bolt,(For Quick Shift) (Mitsubishi)2
01***50Bolt,(With Service Valve R.H.)3
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Long Arm
01***30Bolt,(For Quick Shift) (Mitsubishi)4
01***35Bolt, Hydraulic Tank Mounting2
01***32Washer,(With Auto Emergency Steering)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Swing Cylinder
01***30Bolt,(For Quick Shift) (Mitsubishi)1
01***32Washer,(With Auto Emergency Steering)1
07***95O-Ring,(Y1620-11a0a-12)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment : Tilt Cylinder (For Power Tilt Mech. Angle Dozer)(#11899-)
01***20Bolt,(For Quick Shift) (Mitsubishi)1
01***32Washer,(With Auto Emergency Steering)1
04***25Ring,Snap (Kit)4
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Work Equipment Control System
Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 3-Spool Valve (1/2) (Swing? Travel Speed? Blade)
01***10Bolt6
01***16Bolt (Op)6
01***20Bolt (Itl)3
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 3-Spool Valve (2/2) (Swing? Travel Speed? Blade)
01***08Nut (Op)1
07***11O-Ring (Kit)1
07***34O-Ring,(Not Used When (B) Spec.)3
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 4-Spool Valve (1/2) (Swing? Travel Speed? Blade? Att.)
01***10Bolt8
01***16Bolt (Op)8
01***20Bolt (Itl)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 4-Spool Valve (1/2) (Swing? Travel Speed? Blade? Tilt)(#11899-)
01***10Bolt8
01***16Bolt (Op)8
01***20Bolt (Itl)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 4-Spool Valve (2/2) (Swing? Travel Speed? Blade? Att.)
01***08Nut (Op)1
07***11O-Ring (Kit)2
07***34O-Ring,(Not Used When (B) Spec.)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 4-Spool Valve (2/2) (Swing? Travel Speed? Blade? Tilt)(#11899-)
01***08Nut (Op)1
07***11O-Ring (Kit)1
07***34O-Ring,(Not Used When (B) Spec.)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 6-Spool Valve (1/3) (Arm? Travel? Bucket? Boom? Boom Swing)
01***10Bolt12
01***16Bolt (Op)12
01***20Bolt (Itl)6
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 6-Spool Valve (2/3) (Arm? Travel? Bucket? Boom? Boom Swing)
01***08Nut (Op)1
07***11O-Ring (Kit)1
07***34O-Ring,(Not Used When (B) Spec.)3
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : 6-Spool Valve (3/3) (Arm? Travel? Bucket? Boom? Boom Swing)
07***34O-Ring,(Not Used When (B) Spec.)3
07***34O-Ring,(For Without Brake Assistor)2
70***70Spring3
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Arm Cylinder Line) (Chassis Side)
07***23O-Ring,(For 2nd Travel Speed) (Op)2
08***36Band,(For 2nd Travel Speed) (Op)2
20***40Cover,(For 2nd Travel Speed) (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Blade Cylinder Line) (For Power Tilt Mech. Angle Dozer)(#11899-)
01***30Bolt,(Not Used With Emergency Str.)4
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)4
04***64Pin,Snap (Welded)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Blade Cylinder Line) (Chassis Side)
01***30Bolt,(Not Used With Emergency Str.)4
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)4
04***64Pin,Snap (Welded)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Cylinder Line) (Chassis Side) (Except Japan)
01***20Bolt,(With Auto Emergency Steering)4
01***06Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-108062
01***25Washer,Spring?For Additional Rear Lam2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Breaker Line) (Chassis Side)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***45Bolt, Mounting Bracket To Radiator (Top)2
01***32Washer,(With Auto Emergency Steering)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line) (Chassis Side)
07***23O-Ring,(For 2nd Travel Speed) (Op)2
20***10Elbow1
20***20Elbow1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Drain)
07***34O-Ring,(Not Used When (B) Spec.)1
07***04Hose,See Fig. K4010-05a01
07***06Hose,(For Maintenance Monitor)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (For Attachment) (Chassis Side)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***45Bolt, Mounting Bracket To Radiator (Top)2
01***32Washer,(With Auto Emergency Steering)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Moment Limit System) (Without Cab For Except Japan)
01***45Screw,(For Dual Tilt Dozer)2
01***13Washer,Spring(For Wiper Switch Earth)2
01***08Washer,(For Fixed Type Ripper)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve)
01***25Bolt,Without Revolution Sensor6
01***30Bolt,(For Mechanical Governor)12
01***50Bolt,(For Strengthened Cover)3
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve) (For Power Tilt Mech. Angle Dozer)(#11899-)
01***25Bolt,Without Revolution Sensor6
01***30Bolt,(For Mechanical Governor)12
01***50Bolt,(For Strengthened Cover)3
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve) (For Attachment)
08***14Grommet,(For Eu Dynamic Noise)3
20***70Cushion6
20***30Bracket1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve) (For Breaker)
20***70Cushion6
20***30Bracket1
20***31Bracket,(For Power Tilt Mech Angle)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Return)
01***20Bolt,(For Quick Shift) (Mitsubishi)4
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***30Washer, Spring (Supplied W/Spider Assembly), Washer-Spring2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Swing Motor Line)
01***40Bolt,(With Service Valve R.H.)2
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)2
01***32Washer,(Not Used With Emergency Str.)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Pump)
01***30Bolt,(For Mechanical Governor)8
01***11Nut,(With Under Mirror)4
01***25Washer,Spring?For Additional Rear Lam8
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Tilt Cylinder Line) (For Power Tilt Mech. Angle Dozer)(#11899-)
07***23O-Ring,(For 2nd Travel Speed) (Op)2
07***34O-Ring,(For Without Brake Assistor)2
08***36Band,(For 2nd Travel Speed) (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Travel Motor Line) (For Power Tilt Mech. Angle Dozer)(#11899-)
01***35Bolt, Bolt, Mount Tubes To Switch And Work Pumps18
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)18
07***23O-Ring,(For 2nd Travel Speed) (Op)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Travel Motor Line) (Chassis Side) (Except Japan)
01***65Bolt,(Except Japan)2
01***32Washer,(With Auto Emergency Steering)4
07***34O-Ring,(Not Used When (B) Spec.)1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Piping (Travel Motor Line) (Track Side)
01***30Bolt,(Not Used With Emergency Str.)18
01***35Bolt, Bolt, Mount Tubes To Switch And Work Pumps18
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)18
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Pump (1/2) (For Breaker) (Except Japan)
01***25Bolt8
01***23Washer,(For Shipping)8
07***21O-Ring,Water Piping1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Pump (1/3) (Except Japan)
01***75Bolt4
01***32Washer, (Without Emergency Steering)4
04***20Pin,Dowel (Welded)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Pump (2/2) (For Breaker) (Except Japan)
01***25Bolt4
01***95Bolt4
01***23Washer,(For Shipping)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Pump (2/3) (Except Japan)
01***25Bolt6
01***75Bolt4
01***23Washer,(For Shipping)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Pump (3/3) (Except Japan)
01***25Bolt4
01***85Bolt4
01***23Washer,(For Shipping)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Hydraulic Tank
01***20Bolt,(For Quick Shift) (Mitsubishi)4
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***25Bolt,(Without Rops Guard? Canopy)4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Relief Valve (For Travel Motor)(#11899-)
01***08Nut (Op)1
07***11O-Ring (Kit)1
07***34O-Ring, O-Ring,Drain Plug? R.H. Half Tank1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Swing Motor (1/2)
04***18Ring, Snap1
07***23O-Ring,(For 2nd Travel Speed) (Op)2
07***12Plug,(With Lock Valve)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Swing Motor (1/2) (For Breaker Att)
04***18Ring, Snap1
07***23O-Ring,(For 2nd Travel Speed) (Op)2
07***12Plug,(With Lock Valve)2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Swing Motor (2/2)
07***16O-Ring1
07***16Ring, Back-Up1
07***34O-Ring, O-Ring,Drain Plug? R.H. Half Tank1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Swing Motor (2/2) (For Breaker Att)
07***16O-Ring1
07***16Ring, Back-Up1
07***34O-Ring, O-Ring,Drain Plug? R.H. Half Tank1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Swivel Joint
01***35Bolt,(For Position Fixing)4
01***25Washer,Spring?For Additional Rear Lam4
01***23Washer, Wiring Harness Mounting Bracket4
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Swivel Joint (For Power Tilt Mech. Angle Dozer)(#11899-)
01***35Bolt,(For Position Fixing)4
01***23Washer, Wiring Harness Mounting Bracket4
04***25Ring, Retaining1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Travel Motor (1/2)(#10001-11898)
01***20Bolt, Mount Spool Covers6
04***93Ball,Steel2
06***01Bearing,Ball1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Travel Motor (1/3)(#11899-)
04***15Ring, Snap1
06***02Bearing,Ball1
06***05Bearing, Ball1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Travel Motor (2/3)(#11899-)
FU***35Ring,Snap1
FU***83Carrier Sub Ass'Y1
FU***16Ring,Sliding1
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Travel Motor (3/3)(#11899-)
FU***90O-Ring10
FU***16Plug6
FU***90O-Ring2
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Komatsu : Pc40-6(S/N 10001-Up) : Work Equipment Control System : Travle Motor (2/2)(#10001-11898)
04***10Ring,Snap1
04***12Ring, Retaining3
07***07O-Ring - (K10)2
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PC40-6(S/N 10001-UP) serial number reference

The serial number 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 model code (PC40-6) and serial number (starting at 10001) are stamped on this plate; the 17-character ISO PIN, if present, is on the emissions/export plate near the engine bay.

PrefixIdentifies
PC40-6Standard hydraulic excavator
PC40-6On rubber (wheeled variant)

Frequently asked questions

What engine does the Komatsu PC40-6 use?

The Komatsu PC40-6 uses a Komatsu diesel engine. Specific displacement and horsepower ratings vary by configuration and regional emissions package. Consult the machine's serial number-specific spec sheet for exact engine details.

What is the operating weight of the Komatsu PC40-6?

The standard operating weight is approximately 9,260 lbs (4.33 tons). This weight varies by configuration, including the presence of a cab, counterweight, and undercarriage type (steel tracks vs. rubber shoes).

What model replaced the Komatsu PC40-6?

The Komatsu PC40-7 succeeded the PC40-6 series. It introduced updated engine technology and emissions compliance, continuing the lineage of compact excavators in the 4-ton class.

What PC40-6(S/N 10001-UP) owners discuss

What engine does the Komatsu PC40-6 (S/N 10001-UP) use, and what are the standard idle speed and exhaust valve clearance specifications?
The PC40-6 uses a Komatsu diesel engine. Standard engine idle speed is 900 +100/-0 rpm. Exhaust valve clearance is 0.5 mm. The machine was manufactured from 1989 to 1994. The exact engine model designation is not specified in the available documentation for this serial range; verify with your dealer for the specific engine code stamped on the block.
What are the known hydraulic and cooling system behaviors for the PC40-6?
The PC40-6 is prone to overheating in summer conditions (85°F/29°C+) due to insufficient airflow. Check that all foam insulation around the radiator is intact; gaps cause cooling failure. The hydraulic system uses a CLSS (Closed Center Load Sensing System). A common failure point is the PC valve (pilot control valve) O-rings after 4,000 hours. If unload pressure at neutral exceeds 22 kg/cm² (313 psi), internal leakage causes overheating. Install a pressure gauge on top of the control valve to check this. The hydraulic tank capacity is 60 liters (15.9 gal).
What are the typical undercarriage wear patterns and inspection points for the PC40-6?
The PC40-6 has a standard track width of 400 mm (15.7 in). Common wear items include track pads, which often become beat up, and bucket bushings, which loosen over time. The slew ring bearing is a critical wear point. A rumbling noise during slewing indicates potential slew ring or ball bearing failure. Inspect the slew ring ball bearings by removing the inspection plate on the frame. If the bearings are slightly scarred, they may last with careful greasing, but excessive looseness (rocking in the frame) requires major repair. The standard operating weight is 9,260 lb (4,200 kg) to 9,560 lb (4,340 kg) depending on configuration.
What are the common electrical and sensor issues reported for this machine?
Komatsu excavators of this era rely on electronic control systems. Common issues include intermittent starting, dashboard failure, and random shutdowns caused by faulty sensors or unstable power supply. The PC40-6 may experience engine starting difficulties. Solenoid engagement issues are also reported. Verify wiring harness integrity and sensor connections if these symptoms appear.
What fluid specifications should be used for the PC40-6?
Use Komatsu EO or TO hydraulic oil. Use Komatsu Super-coolant AF-NAC or equivalent heavy-duty diesel coolant. Use Komatsu AXO or HO gear oil for final drives. Use Versimax HD12 15W-40 or equivalent heavy-duty diesel engine oil. The cooling system capacity is 5.0 liters (1.32 gal).
What are the key travel motor and final drive issues discussed by operators?
Loss of power in one track (e.g., left chain) while slewing or traveling is a common complaint. Causes include worn final drive oil seals leading to bearing failure, or travel motor issues. The idler may squeak under pressure. Check the idler by pulling the track down and attempting to rotate it by hand; it should turn freely. If the travel lever linkage is worn, valves may not open evenly. Swap travel hoses left-to-right to isolate pump vs. motor issues. If the problem moves with the hoses, the travel motor is faulty.
What to check when buying a used PC40-6 (S/N 10001-UP)?
1. Slew Ring: Listen for rumbling during slewing. Check for frame rocking. Inspect ball bearings via the access plate. 2. Cooling System: Verify radiator foam insulation is complete. Check for overheating history. 3. Travel Motors: Test travel power on both tracks independently. Check for idler squeak. 4. Bucket Bushings: Inspect for looseness; replacement is common. 5. Engine: Check idle speed (900 +100/-0 rpm) and exhaust valve clearance (0.5 mm). 6. Hydraulics: Check for leaks and test PC valve unload pressure (should be <= 22 kg/cm²). 7. Serial Verification: Confirm S/N 10001-UP range to ensure correct parts catalog.

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

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