Komatsubulldozermedium (d40 - d75)

Komatsu D40PLF-1(S/N 2201-UP)

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu D40PLF-1 is a heavy crawler bulldozer designed for mass earthmoving and production work. It belongs to the D40 series, which includes variants such as the D40A-1, D40F-3, and D40P-3. The D40PLF-1 specifically denotes a forestry or low-ground-pressure configuration within the PLF lineage. Operating weights for the D40 series generally range from 23,000 to 24,000 lbs (10,432 to 10,886 kg) depending on the specific model and attachment package. The D40 series succeeded earlier D40 models and was followed by newer generations incorporating advanced emissions and control technologies. Configurations offered include standard dozer, forestry, and low-ground-pressure variants to suit different terrain conditions.

Across the D40 series generations, Komatsu updated engine emissions compliance, hydraulic system efficiency, and undercarriage durability. The D40PLF-1 remains relevant in the used and parts market due to its robust powertrain and widespread use in forestry and heavy construction. Its modular design allows for extensive parts availability, including undercarriage components, engine parts, and hydraulic assemblies. The machine's longevity and the availability of remanufactured components make it a cost-effective option for fleet managers seeking reliable heavy dozers with established service networks.

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 D40PLF-1(S/N 2201-UP) specifications

Engine

ModelS4D105-3
Number of Cylinders4
Displacement264.3 cu in (4,330 cc)
Gross Power80 hp (59.7 kW)
Power Measured @2400 rpm

Weights

Operating Weight22,707.7 lb (10,300 kg)

Dimensions

Length w/ Blade15.31 ft (4.67 m)
Width Over Tracks8.14 ft (2.48 m)
Height to Top of Cab8.57 ft (2.61 m)
Length of Track on Ground8.5 ft (2.59 m)
Ground Clearance1.42 ft (0.43 m)
Length w/o Blade11.78 ft (3.59 m)
Track Gauge5.78 ft (1.76 m)
Standard Shoe Size28.35 in (720 mm)
Number of Shoes Per Side720
Number of Carrier Rollers Per Side1
Number of Track Rollers Per Side6
Track Pitch6.89 in (175 mm)

Performance

Ground Pressure3.41 psi (23.5 kPa)
Transmission TypeDD
Number of Forward Gears4
Number of Reverse Gears3

Blades

Standard Blade Width9.9 ft (3.02 m)
Standard Blade Height35.5 in (902 mm)
Standard Blade Capacity3.2 cu yd (2.45 cu m)
Standard Blade Cutting Depth15 in (381 mm)

Service Capacities

FuelNot documented for this exact serial range — verify with your dealer
HydraulicNot documented for this exact serial range — verify with your dealer
Engine OilNot documented for this exact serial range — verify with your dealer
CoolingNot 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.

Komatsu D40PLF-1(S/N 2201-UP) maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition.
  • Check hydraulic fluid level at sight glass.
  • Check coolant level and ensure cap is secure.
  • Drain water from fuel separator.
  • Check DEF level.
  • Check air filter restriction indicator.
  • Inspect track tension and shoe/pad condition.
  • Inspect hydraulic hoses for cracks or leaks.
  • Check pins, bushings, and attachment points.
  • Clear debris from radiator and oil cooler fins.
  • Check for fluid leaks under the machine.
  • Verify ROPS/FOPS integrity and seat belt.
  • Test horn, backup alarm, and lights.
  • Ensure emergency shutoff is accessible.
  • Start engine and verify gauges and KOMTRAX display are normal.
  • Test all controls for smooth response.
  • Check service and parking brakes.
Every 250 h
  • Change engine oil and filter.
  • Grease all points including blade, ripper, and push arms.
  • Check fluid levels.
  • Check air filter outer element.
  • Inspect belts and hoses.
  • Perform visual walk-around inspection.
Every 500 h
  • Replace fuel filter.
  • Replace hydraulic return filter.
  • Perform battery service and load test.
  • Test coolant SCA concentration.
  • Collect KOWA oil sample.
  • Perform detailed undercarriage inspection.
Every 1,000 h
  • Collect hydraulic oil sample.
  • Change final drive oil on both sides.
  • Inspect turbocharger.
  • Take wear measurements on undercarriage components.
  • Check valve adjustment status.
  • Perform structural inspection of frame and welds.
Every 2,000 h
  • Change hydraulic oil.
  • Flush and replace coolant.
  • Service transmission and torque converter.
  • Perform comprehensive component evaluation.
  • Inspect KDPF system.
  • Torque ROPS bolts.
  • Check cutting edge and end bit bolt torque.
  • Inspect swing machinery oil and change if necessary.

Servicing the D40PLF-1(S/N 2201-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize KOWA oil analysis at every 500-hour interval to monitor engine wear metals, hydraulic particle counts, and coolant SCA concentration. Track hydraulic oil viscosity and oxidation levels to predict pump and valve failures. Monitor transmission and final drive oil for gear wear indicators. Use KOMTRAX telematics to track load frequency and fuel consumption trends, identifying inefficiencies before they cause component stress. Regular fluid sampling prevents catastrophic powertrain failure and extends service life.

Corrective & Common Repairs

Address frequent undercarriage wear by measuring roller, idler, and sprocket dimensions at 1,000-hour intervals. Replace hydraulic return filters promptly to prevent contamination of the main hydraulic system. Inspect and replace worn track chains and shoes to maintain proper tension and reduce ground pressure issues. Check and torque ROPS bolts and cutting edge fasteners to prevent structural loosening. Replace worn seals on cylinders to prevent hydraulic fluid leaks and maintain blade and ripper performance.

Overhaul & Rebuild Points

Plan major powertrain overhauls around the 2,000-hour mark, including hydraulic oil changes and transmission service. Inspect turbocharger condition and valve adjustments during major services. Evaluate final drive gear wear and replace seals and bearings as needed. Assess engine compression and injector performance to determine the need for cylinder head or piston ring replacement. Structural inspections of the frame and welds are critical before committing to major component rebuilds.

Seasonal & Environment Servicing

In cold climates, ensure coolant concentration is adequate to prevent freezing and check DEF fluid levels for proper SCR system operation. In dusty environments, inspect and clean the air filter outer element frequently, replacing it as needed to protect the engine. Clear debris from radiator and oil cooler fins daily to prevent overheating in high-temperature operations. Adjust track tension for muddy or rocky terrain to prevent excessive wear and improve traction. Grease all pivot points more frequently in abrasive conditions to extend undercarriage and attachment life.

D40PLF-1(S/N 2201-UP) common service parts

Part numberPart
07000-02135O-Ring,Hydraulic Oil FilterCheck fitment →
07000-02075O-Ring,Steering Oil FilterCheck fitment →
08036-01414Clip,(For Add.Filter)(Except Japan)Check fitment →
(12F-49-00010)Filter Ass'YCheck fitment →
01010-31295Bolt, Mount Filter SupportCheck fitment →

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

D40PLF-1(S/N 2201-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
CA115Engine crankshaft speed sensor failureBroken sensor, wiring issue, or connector corrosionReplace the speed sensor and verify voltage at the pin connector
CA111Internal engine controller faultECM hardware failureReplace or reprogram the ECM
CA441Battery voltage too lowWeak battery or charging system failureReplace the alternator or battery; check the voltage regulator
CA442Battery voltage too highAlternator overcharging or regulator failureReplace the alternator or battery; check the voltage regulator
AA10NXAir cleaner cloggingDirty or blocked air filter elementReplace the air filter
CA451Common rail pressure sensor feedback value too highMalfunction in the rail sensor or actual overpressure conditionDiagnose the fuel rail pressure sensor or pump lines
CA234Engine overspeedThrottle calibration error, engine load cycle issue, or operator misuseVerify throttle calibration and engine load cycle
CA122Intake air pressure high voltageSensor malfunction or wiring issueVerify the intake pressure sensor and wiring
CA123Intake air pressure low voltageSensor short or airflow restrictionCheck for a sensor short or an airflow restriction
CA153Intake air temperature sensor error (high)Sensor failureReplace or test the IAT sensor

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

D40PLF-1(S/N 2201-UP) attachments & work tools

Blades

The D40PLF-1(S/N 2201-UP) is a forestry configuration dozer; standard blade types (S/SU/A) and VPAT availability are not documented for this specific serial range in the provided sources, which only list general attachment categories for the D40 series.

Rippers

Multi-shank and single-shank ripper options for the D40PLF-1(S/N 2201-UP) class are not specified in the provided text, which only references rippers for other models like the D39P-1 and D61/65 series.

Winches

Towing winch options and class compatibility for the D40PLF-1(S/N 2201-UP) are not detailed in the provided sources, which only mention winches as a general attachment category for Komatsu bulldozers.

Drawbars/Counterweights

Specific drawbar and counterweight configurations for the D40PLF-1(S/N 2201-UP) are not documented in the provided text, which only lists drawbars for models like the D65PX.

Cab/ROPS Guarding

Forestry and waste configuration guarding options for the D40PLF-1(S/N 2201-UP) are not specified in the provided sources, which only note that the machine is a forestry spec dozer.

Hydraulic Arrangement

Front/rear tool hydraulic arrangement notes for the D40PLF-1(S/N 2201-UP) are not provided in the sources, which only reference general hydraulic fluid specifications and fault codes.

All D40PLF-1(S/N 2201-UP) assemblies by section

Every catalogued assembly group for the Komatsu D40PLF-1(S/N 2201-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine Related Parts And Electrical System
Komatsu : D40plf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Battery
01***16Bolt,(For Slag Handling)2
01***08Nut, Regular Hexagon (M10-1.50)8
01***25Washer,Spring?(Sandy And Dusty Spec.)2
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Komatsu : D40plf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Electrical System
01***16Bolt (Welded)2
01***16Bolt,(For Slag Handling)2
01***16Bolt,(Sandy And Dusty Spec.)4
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Komatsu : D40plf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
01***50Bolt2
01***20Bolt,Front (Except Japan)2
01***45Bolt2
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Komatsu : D40plf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Fuel Control Lever
01***22Bolt2
01***30Bolt,(Cold Terrain Spec.)1
01***35Bolt,(Without Auto Priming System)2
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Komatsu : D40plf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Fuel Tank
01***16Bolt,(Sandy And Dusty Spec.)2
01***25Bolt,(For Slag Handling)6
01***30Washer,Spring(Sandy?Dusty Terrain S.)2
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Komatsu : D40plf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Instrument Panel
01***20Bolt2
01***16Bolt,(For Slag Handling)6
01***20Bolt,(Used When Towing Winch)2
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Komatsu : D40plf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Radiator
01***25Bolt,(Sandy? Dusty Terrain Spec.)44
01***40Bolt,(Dust And Dirt Protection)8
01***50Bolt - Torque Converter Totransmission Mounting12
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Komatsu : D40plf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Radiator Cover And Piping
01***20Bolt,(Large Capacity Type) (Std)10
01***25Bolt,(Sandy? Dusty Terrain Spec.)1
01***25Bolt - Rear Guard Mounting12
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Guard
Komatsu : D40plf-1(S/N 2201-Up) : Guard : Engine Bottom Guard
01***25Bolt - Rear Guard Mounting5
01***35Bolt,(For Pedal Steering)14
01***36Washer,Radio Controlled Slag Handling5
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Komatsu : D40plf-1(S/N 2201-Up) : Guard : Engine Hood And Guard
01***20Bolt,(Sandy? Dusty Terrain Spec.)3
01***20Bolt,(Large Capacity Type) (Std)2
01***22Bolt4
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Komatsu : D40plf-1(S/N 2201-Up) : Guard : Equalizer Bar
Komatsu : D40plf-1(S/N 2201-Up) : Guard : Fender And Rear Cover
01***25Bolt - Rear Guard Mounting6
01***30Bolt,Radio Controlled Slag Handling26
01***35Bolt - Torque Converter Totransmission Mounting6
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Komatsu : D40plf-1(S/N 2201-Up) : Guard : Floor Plate And Dashboard
01***10Bolt, Mount Flasher4
01***20Bolt,(Sandy? Dusty Terrain Spec.)4
01***30Bolt,(For France Noise Suppression)6
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Komatsu : D40plf-1(S/N 2201-Up) : Guard : Frame And Cover
01***12Bolt (M8-1.25x12)2
01***16Bolt,(For Slag Handling)8
01***18Bolt2
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Komatsu : D40plf-1(S/N 2201-Up) : Guard : Mark And Plate
04***60Screw, Serial Number Plate4
09***35Plate? Name,Machine (Limited Supply)1
09***01Plate? Instruction,Radiator Level1
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Komatsu : D40plf-1(S/N 2201-Up) : Guard : Operator'S Seat
01***30Bolt,(Cold Terrain Spec.)4
01***16Bolt,(Sandy And Dusty Spec.)2
01***20Bolt,(Large Capacity Type) (Std)8
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Main Clutch And Transmission
Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Clutch Pedal
01***30Bolt,Radio Controlled Slag Handling3
01***35Bolt - Torque Converter Totransmission Mounting3
01***12Screw3
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Counter Shaft And Gear
01***20Bolt,(Sandy? Dusty Terrain Spec.)2
01***30Bolt,(For France Noise Suppression)4
01***30Bolt,Radio Controlled Slag Handling4
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Gear Shift Fork
01***30Bolt,(For France Noise Suppression)2
01***35Bolt, Mounting - Flywheel Housing End2
01***09Nut2
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Gear Shift Lever
01***40Bolt,(Dust And Dirt Protection)2
01***36Washer,Radio Controlled Slag Handling2
01***45Washer1
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Inertia Brake
01***25Bolt,(Sandy? Dusty Terrain Spec.)3
01***05Nut? L.H. Thread,R.H. Thread1
01***06Nut, Regular Hexagon (M8-1.25)1
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Intermediate Shaft And Gear
01***20Bolt,(Sandy? Dusty Terrain Spec.)2
01***30Bolt,(For France Noise Suppression)4
01***30Bolt,Radio Controlled Slag Handling2
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Booster
01***20Bolt,(Large Capacity Type) (Std)1
01***25Bolt,(Sandy? Dusty Terrain Spec.)7
01***40Bolt,(Dust And Dirt Protection)1
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Booster Pump And Steering Pump
04***18Ring, Snap1
07***60Seal,Oil1
70***01Pump Ass'Y,(Fal 020+020)1
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Case
01***25Bolt,(Sandy? Dusty Terrain Spec.)13
01***30Bolt,(For France Noise Suppression)17
01***08Nut, Regular Hexagon (M10-1.50)2
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Cover And Plate
01***16Bolt (Welded)6
01***45Bolt,(For Suction? Reversible Fan)12
01***06Nut, Regular Hexagon (M8-1.25)2
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Shaft And Lever
01***25Bolt,(Sandy? Dusty Terrain Spec.)3
01***40Bolt,(Dust And Dirt Protection)1
01***10Nut,(Dust?Drip Proof? Trimming S.)3
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Shaft And Gear
01***20Bolt,(Sandy? Dusty Terrain Spec.)2
01***40Bolt,(Dust And Dirt Protection)3
01***40Bolt2
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Transmission Case
01***30Bolt,(For France Noise Suppression)8
01***55Bolt,(For Suction? Reversible Fan)4
01***65Bolt,(For Suction Fan)(4d130-1d)2
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Komatsu : D40plf-1(S/N 2201-Up) : Main Clutch And Transmission : Universal Joint
01***30Washer,Spring(Sandy?Dusty Terrain S.)16
07***45Bolt,(Tree Pusher Dozer)16
12***20Universal Joint A1
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Optional Parts
Komatsu : D40plf-1(S/N 2201-Up) : Optional Parts : Canopy
01***35Bolt,(For Pedal Steering)8
01***42Washer,Spring (For Pedal Steering)8
12***10Canopy Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : Optional Parts : Electrical System (For Rops Cab)
01***16Bolt (Welded)12
01***16Bolt,(Sandy And Dusty Spec.)6
01***08Screw, Terminal1
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Komatsu : D40plf-1(S/N 2201-Up) : Optional Parts : Head Guard
01***75Bolt24
01***40Bolt,(For Center Guard)20
01***50Bolt, Radiator To Frame6
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Komatsu : D40plf-1(S/N 2201-Up) : Optional Parts : Rops Cab (1/3)
01***20Bolt,(Sandy? Dusty Terrain Spec.)8
01***25Bolt,(Sandy? Dusty Terrain Spec.)16
01***30Bolt,Radio Controlled Slag Handling18
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Komatsu : D40plf-1(S/N 2201-Up) : Optional Parts : Rops Cab (2/3)
01***20Bolt,(Sandy? Dusty Terrain Spec.)12
01***25Bolt,(Sandy? Dusty Terrain Spec.)20
01***08Screw, Terminal1
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Komatsu : D40plf-1(S/N 2201-Up) : Optional Parts : Rops Cab (3/3)
01***16Screw,(P.O.C. Model) (Except Japan)60
09***90Strip,Weather2
09***65Strip,Weather2
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Komatsu : D40plf-1(S/N 2201-Up) : Optional Parts : Rops Canopy
01***45Bolt,(For Slag Handling)14
01***50Bolt, Radiator To Frame12
01***75Bolt,Dust8
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S4d105-1b S/N 18273-Up
Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Air Cleaner
01***25Bolt - Rear Guard Mounting8
01***06Nut, Regular Hexagon (M8-1.25)6
01***25Washer,Spring?(Sandy And Dusty Spec.)6
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Air Intake Manifold And Connection
01***65Bolt,(For Alternator Bracket Mount)6
01***75Bolt,(See Fig.0142)4
01***80Bolt,(See Fig.0131)1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Alternator And Mounting
01***60Bolt,(Without Alternator Bracket)2
01***25Bolt,(Sandy? Dusty Terrain Spec.)1
01***30Bolt,(For France Noise Suppression)2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Alternator(#100028-153564)
60***51Alternator A. (25a)1
KD***52Bolt,Through3
KD***70Rear Bracket Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Alternator(#153565-163823)
60***40Alternator A. (25a),(See Fig.0641)1
KD***52Bolt,Through3
KD***70Rear Bracket Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Alternator(#163824-)
60***30Alternator A. (25a),(With Non Hardening Pulley)1
KD***57Bearing,Ball? Front1
KD***70Bracket,Front1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Camshaft And Tappet
01***25Bolt,(Without Auto Priming System)2
01***25Washer,Spring?(Sandy And Dusty Spec.)2
01***16Washer,(For Shipping)2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Corrosion Resistor (Except Japan)
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***29Washer,Spring (Cold Weather Spec.)4
01***30Washer,Spring(Sandy?Dusty Terrain S.)4
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Crankshaft
61***11Bolt,Nylock (K2)1
61***00Metal Ass'Y1
61***50Thrust Metal Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Cylinder Block
01***20Bolt2
01***20Bolt,(Sandy? Dusty Terrain Spec.)1
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Cylinder Block(#100028-149999)
01***20Bolt2
01***20Bolt,(Sandy? Dusty Terrain Spec.)1
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Cylinder Head
01***25Bolt,(Sandy? Dusty Terrain Spec.)1
01***30Bolt,(For France Noise Suppression)1
01***30Washer,Spring(Sandy?Dusty Terrain S.)2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Cylinder Head Cover
01***16Bolt,(For Slag Handling)1
01***25Washer,Spring?(Sandy And Dusty Spec.)1
07***23Clamp - Hose1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Engine Support
01***45Bolt,(For Power Tilt Mech Angle)8
01***55Bolt, Mount Lh Bracket8
20***20Bracket,Rear2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Exhaust Manifold And Turbocharger
01***60Bolt (M10-1.50x60)2
01***80Bolt, Mount Strainer Flange6
01***60Screw2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Flywheel And Flywheel Housing
01***40Bolt,(Dust And Dirt Protection)9
01***60Bolt, Trunnion Cap2
01***55Bolt6
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Front Cover
01***20Bolt,(Sandy? Dusty Terrain Spec.)6
01***22Bolt,(Cold Terrain Spec.)4
01***25Bolt,(Without Auto Priming System)5
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Filter
01***16Bolt (Welded)2
01***20Bolt2
01***35Bolt, Mounting - Flywheel Housing End2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump (Feed Pump)
DK***20Bolt, Joint1
DK***20Pump,Priming1
DK***00Spring,Piston1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump (Governor) (1/2)
DK***40Gasket,Air Compressor2
DK***00Collar1
DK***00Nut,Cap1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump (Governor) (2/2)
DK***00Adapter1
DK***00Spring1
DK***00Nut,Lock1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump (Pump)
61***00Injection Pump Ass'Y1
61***00Injection Pump Ass'Y1
DK***20Plunger Ass'Y4
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump And Piping
01***20Bolt3
01***30Bolt1
01***35Bolt1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump And Piping(#100028-103414)
01***30Bolt,(Cold Weather Spec.)1
01***55Bolt1
01***70Bolt3
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Gasket Kit
01***16Washer,Lock? Injection Gear1
07***65O-Ring,Injection Pump Case1
07***00O-Ring,(F4350-65a1 -5 )1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Heater Signal And Relay Switch
60***70Switch,Air Intake Heater1
60***60Switch,Heater Relay1
60***71Signal,Signal1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Lubricating Oil Cooler
01***25Bolt,(Without Auto Priming System)5
01***30Bolt,(Cold Terrain Spec.)3
01***35Bolt,(Without Auto Priming System)9
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Lubricating Oil Filter
01***90Bolt1
01***35Bolt, Mounting - Flywheel Housing End1
01***25Bolt (M10x1.50x25)1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Lubricating Oil Pump And Suction Pipe(#100028-149999)
01***25Bolt,(Without Auto Priming System)1
01***30Bolt,(Cold Terrain Spec.)2
01***50Bolt,(For Trimming Dozer)4
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Lubricating Oil Pump And Suction Pipe(#150007-)
01***25Bolt,(Without Auto Priming System)1
01***30Bolt,(Cold Terrain Spec.)3
01***40Bolt,(For Position Fixing)1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Muffler
01***30Bolt,(For France Noise Suppression)4
01***70Bolt, Spacer3
01***32Washer,(With Auto Emergency Steering)3
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Nozzle Holder
01***55Bolt,(For Trimming Dozer)8
01***25Washer,Spring?(Sandy And Dusty Spec.)8
07***12Gasket,Mechanical Pump Piping2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Oil Pan
01***22Bolt,(Cold Terrain Spec.)20
01***25Bolt,(Without Auto Priming System)8
01***30Bolt,(Cold Terrain Spec.)2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Piston And Connecting Rod
04***18Ring, Retaining2
61***40Crank Pin Metal A4
61***00Connecting Rod Ass'Y4
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Power Take Off
01***30Bolt,(For France Noise Suppression)12
01***55Bolt, Mount Tube To Switch Pump12
01***30Washer,Spring(Sandy?Dusty Terrain S.)12
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Rocker Arm
01***80Bolt,(Shim 5 Pieces Over)1
01***06Nut, Regular Hexagon (M8-1.25)8
01***36Washer,Radio Controlled Slag Handling4
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (1/2) (7.5kw) (Except Japan)
60***81Starting Motor Ass'Y,7.5kw1
KD***01O-Ring1
KD***70Center Bracket A1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (1/2)(#102089-163823)
60***43Starting Motor A.,(5.5kw) (See Fig.0661)1
KD***10Clutch Ass'Y,Over Running1
KD***01O-Ring1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (1/2)(#163824-)
60***80Starting Motor Ass'Y,(5.5kw)1
KD***30Bracket,Center1
KD***50O-Ring1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (2/2) (7.5kw) (Except Japan)
KD***01Washer,Seal2
KD***30Holder1
KD***05Terminal Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (2/2)(#102089-163823)
KD***01Washer,Seal2
KD***80Shift Lever Ass'Y1
KD***30Contactor,Moving1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (2/2)(#163824-)
KD***50O-Ring1
KD***30Cap, Gum1
KD***10Ring,Clip2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor And Mounting
01***35Bolt - Torque Converter Totransmission Mounting3
01***36Washer,Radio Controlled Slag Handling3
07***00O-Ring,(F4350-65a1 -5 )1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor(#100028-102088)
60***42Starting Motor A.,(5.5kw) (See Fig.2546)1
KD***10Clutch Ass'Y,Over Running1
KD***80Shift Lever Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Turbocharger (Except Japan)
61***00Turbocharger Ass'Y,(See Fig.2141)1
61***01Turbocharger Ass'Y,(See Fig.2141)1
61***02Turbocharger Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Turbocharger Lubricating Oil Piping
01***22Bolt,(Cold Terrain Spec.)2
01***35Bolt, Mounting - Flywheel Housing End2
01***25Washer,Spring?(Sandy And Dusty Spec.)2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Water Pump And Cooling Fan(#100028-149999)
01***18Bolt2
01***20Bolt,(Sandy? Dusty Terrain Spec.)2
01***30Bolt,(Cold Terrain Spec.)3
See all parts with full part numbers in Heavy Parts AI →
Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Water Pump And Cooling Fan(#150007-)
01***30Bolt,(Cold Terrain Spec.)3
01***50Bolt4
01***55Bolt,(For Suction? Reversible Fan)2
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Komatsu : D40plf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Water Separator
07***60O-Ring,(For Pc750?800?1800) (A2610)1
60***00Water Separator A.,(4d105-5h? 4d105-5t)1
60***60Plug,Drain (4d105-5h? 4d105-5t)1
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Steering System And Final Drive
Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Bevel Gear And Shaft
01***10Bolt, Mount Flasher4
01***35Bolt - Torque Converter Totransmission Mounting6
01***20Bolt4
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Brake Band
01***40Bolt,(Not Used With Cab)8
01***08Nut, Regular Hexagon (M10-1.50)2
01***42Washer,Spring (For Pedal Steering)8
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Brake Lock Lever
01***16Screw,(For Auto-Emergency Steering)1
01***08Washer,(For Mounting First Aid Kit)1
04***10Pin,Cotter (Without Towing Winch), Cotter Pin; Was 04050-116102
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Brake Pedal
01***45Bolt,(Cold Terrain Spec.)3
01***12Screw1
01***10Nut,(Dust?Drip Proof? Trimming S.)2
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Final Drive Gear
01***25Bolt,(Sandy? Dusty Terrain Spec.)24
01***20Bolt,(Used When Towing Winch)4
01***30Bolt,Radio Controlled Slag Handling12
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Final Drive Housing
01***18Bolt (Op)20
01***40Bolt,(Not Used With Cab)50
01***30Washer,Spring(Sandy?Dusty Terrain S.)20
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Sprocket And Shaft
01***25Bolt,(Without Auto Priming System)16
01***50Bolt - Torque Converter Totransmission Mounting12
01***40Bolt,(Not Used With Cab)8
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Case And Main Frame
01***16Bolt,(For Slag Handling)2
01***16Bolt,(Sandy And Dusty Spec.)2
01***25Bolt,(For Slag Handling)4
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Case Cover (1/2)
01***20Bolt,(Large Capacity Type) (Std)6
01***35Bolt, Mounting - Flywheel Housing End2
01***30Bolt,Radio Controlled Slag Handling4
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Case Cover (2/2)
01***20Bolt,(Large Capacity Type) (Std)4
01***40Bolt,(Dust And Dirt Protection)4
01***30Washer,Spring(Sandy?Dusty Terrain S.)4
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Clutch
01***10Nut (K10)2
04***30Ring,Snap? Sprocket2
06***15Bearing2
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Control Lever
01***20Bolt,(Large Capacity Type) (Std)2
01***25Bolt - Rear Guard Mounting2
01***30Bolt,Radio Controlled Slag Handling2
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Control Linkage
01***30Bolt,(Cold Terrain Spec.)2
01***35Bolt - Torque Converter Totransmission Mounting2
01***10Nut,(Service Only)2
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Control Valve (1/2)
01***35Bolt,(Without Auto Priming System)2
01***30Bolt,Radio Controlled Slag Handling1
01***35Bolt - Torque Converter Totransmission Mounting4
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Control Valve (2/2)
01***18Bolt5
01***06Nut, Regular Hexagon (M8-1.25)2
01***25Washer,Spring?(Sandy And Dusty Spec.)5
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Oil Filter
01***30Bolt,(For France Noise Suppression)4
01***30Washer,Spring(Sandy?Dusty Terrain S.)4
07***10O-Ring,(F4350-62a0 -5 ), O-Ring; Komatsu S/N 22***01 & Abv - Was 07000-02010, O-Ring; Was 07000-020101
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Komatsu : D40plf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Oil Piping
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***30Bolt,(For France Noise Suppression)2
01***35Bolt, Mounting - Flywheel Housing End4
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Tool And Kit
Komatsu : D40plf-1(S/N 2201-Up) : Tool And Kit : Tool
07***00Pump,Grease1
07***00Pump,Grease1
07***00Cartridge,Grease1
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Track
Komatsu : D40plf-1(S/N 2201-Up) : Track : Carrier Roller
01***20Bolt,(Large Capacity Type) (Std)2
01***25Bolt,(Sandy? Dusty Terrain Spec.)3
01***45Bolt,(For Slag Handling)8
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Komatsu : D40plf-1(S/N 2201-Up) : Track : Front Idler
01***25Bolt,(Sandy? Dusty Terrain Spec.)12
01***40Bolt,(Not Used With Cab)8
01***13Nut - Cylinder Mounting2
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Komatsu : D40plf-1(S/N 2201-Up) : Track : Recoil Spring
01***85Bolt4
01***16Bolt,(Sandy And Dusty Spec.)2
01***20Bolt,(Large Capacity Type) (Std)6
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Komatsu : D40plf-1(S/N 2201-Up) : Track : Track Frame
01***30Bolt,(For Center Guard)36
01***40Bolt,(Not Used With Cab)2
01***45Bolt, Mount Center Hinge Retainer (Lower)2
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Komatsu : D40plf-1(S/N 2201-Up) : Track : Track Roller
01***25Bolt,(Sandy? Dusty Terrain Spec.)12
01***55Bolt,(For Long Track)48
01***30Washer,Spring(Sandy?Dusty Terrain S.)12
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Komatsu : D40plf-1(S/N 2201-Up) : Track : Track Shoe (Lubricate Type)(#3501-)
01***22Nut? Shoe (Kit)328
12***60Track Link Ass'Y1
12***61Track Link Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : Track : Track Shoe (Master Pin Type)(#2201-3500)
01***22Nut? Shoe (Kit)344
12***42Track Link Ass'Y1
12***01Track Shoe Ass'Y1
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Komatsu : D40plf-1(S/N 2201-Up) : Track : Track Shoe (Master Pin Type)(#3501-)
01***22Nut? Shoe (Kit)344
12***43Track Link Ass'Y1
12***02Track Shoe Ass'Y1
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Work Equipment
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment : 3-Point Hitch (1/2)
01***95Bolt,(For Reversible Fan)2
01***75Screw12
01***15Bolt2
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment : 3-Point Hitch (2/2)
01***95Bolt,(For Reversible Fan)5
01***15Bolt4
01***08Nut, Regular Hexagon (M10-1.50)8
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment : P.T.O. (1/2)
01***20Bolt,(Large Capacity Type) (Std)5
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***30Bolt,(For France Noise Suppression)12
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment : P.T.O. (2/2)
01***30Bolt,(For France Noise Suppression)2
01***16Screw,Set1
01***30Washer,Spring(Sandy?Dusty Terrain S.)2
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment : Straight Tilt Blade
01***50Bolt, Radiator To Frame8
01***65Bolt,L.H8
01***00Screw1
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment : Straight Tilt Frame
01***25Bolt - Rear Guard Mounting12
01***55Bolt,(For France Noise Suppression)4
01***45Bolt, Fuel Tank Mounting - Front Right16
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Work Equipment Control System
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : 3-Point Hitch Control Lever
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : 3-Point Hitch Control Valve (1/2)
01***30Bolt,(For France Noise Suppression)2
01***35Bolt2
01***50Bolt2
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : 3-Point Hitch Control Valve (2/2)
01***30Bolt,(For France Noise Suppression)2
01***30Washer,Spring(Sandy?Dusty Terrain S.)2
07***40O-Ring,Water Pump Mount1
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : 3-Point Hitch Cylinder
01***35Bolt,(Without Auto Priming System)8
01***45Bolt,(S6d155-4b)8
01***40Bolt,(Dust And Dirt Protection)2
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Blade Control Lever
01***30Bolt,(Cold Terrain Spec.)1
01***18Bolt (Op)2
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Blade Lift Control Valve (1/2)
01***30Bolt,(For France Noise Suppression)2
01***35Bolt - Torque Converter Totransmission Mounting2
01***40Bolt,(Dust And Dirt Protection)2
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Blade Lift Control Valve (2/2)
01***25Bolt,(Sandy? Dusty Terrain Spec.)3
01***35Bolt, Mounting - Flywheel Housing End3
01***70Bolt, Spacer2
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Blade Lift Cylinder
01***35Bolt,(Without Auto Priming System)4
01***45Bolt,(S6d155-4b)4
01***40Bolt,(Dust And Dirt Protection)2
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Blade Tilt Control Valve
01***30Bolt,(For France Noise Suppression)2
01***55Bolt,(For Suction? Reversible Fan)1
01***35Bolt - Torque Converter Totransmission Mounting4
See all parts with full part numbers in Heavy Parts AI →
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Blade Tilt Cylinder
01***16Bolt,(For Slag Handling)1
01***35Bolt,(Without Auto Priming System)4
01***45Bolt,(S6d155-4b)4
See all parts with full part numbers in Heavy Parts AI →
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Filter
01***30Bolt,(For France Noise Suppression)4
01***30Washer,Spring(Sandy?Dusty Terrain S.)4
04***15Pin,Cotter (Op)2
See all parts with full part numbers in Heavy Parts AI →
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve)
01***20Bolt,(Large Capacity Type) (Std)1
01***25Bolt,(Sandy? Dusty Terrain Spec.)2
01***35Bolt, Mounting - Flywheel Housing End2
See all parts with full part numbers in Heavy Parts AI →
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Blade Lift Cylinder)
01***30Bolt,(Cold Terrain Spec.)8
01***40Bolt,(For Position Fixing)4
01***55Bolt,(For Trimming Dozer)4
See all parts with full part numbers in Heavy Parts AI →
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Blade Tilt Cylinder)
01***16Bolt,(For Slag Handling)7
01***25Bolt,(Sandy? Dusty Terrain Spec.)3
01***50Bolt4
See all parts with full part numbers in Heavy Parts AI →
Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Piping (Valve To 3-Point Hitch Cylinder)
01***20Bolt,(Large Capacity Type) (Std)2
01***35Bolt, Mounting - Flywheel Housing End4
01***90Bolt (M10-1.50x90)3
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Pump
04***18Ring,Snap (Itl)1
07***62Seal,Oil (Itl)1
70***00Pump Ass'Y,(Kar 056)1
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Tank (1/2)
01***16Bolt,(For Slag Handling)2
01***25Bolt,(Sandy? Dusty Terrain Spec.)32
01***11Nut,(Not Shown)4
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Tank (2/2)
01***30Bolt,(Cold Terrain Spec.)2
01***25Bolt,(Sandy? Dusty Terrain Spec.)7
01***30Bolt,(For France Noise Suppression)4
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Komatsu : D40plf-1(S/N 2201-Up) : Work Equipment Control System : P.T.O. Control Lever
01***30Bolt,(Cold Terrain Spec.)1
01***06Nut, Regular Hexagon (M8-1.25)1
01***08Nut,R.H. Thread1
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Frequently asked questions

What engine does the Komatsu D40PLF-1 use?

The D40PLF-1 uses a Komatsu diesel engine, part of the D40 series powertrain lineup. Specific engine model and displacement details vary by configuration and serial range; consult the machine's data plate or OEM spec sheet for exact designation.

What is the operating weight of the Komatsu D40PLF-1?

Operating weight varies by configuration, series, and attachment package. The D40 series generally falls in the 23,000 to 24,000 lbs (10,432 to 10,886 kg) range. Exact weight for the D40PLF-1 (S/N 2201-UP) depends on the specific blade, ripper, and undercarriage setup.

What replaced the Komatsu D40PLF-1?

The D40PLF-1 is part of the D40 series lineage. Successors in the Komatsu bulldozer lineup include newer generations with updated emissions compliance and technology, such as the D61EX/PXi series and subsequent models. Specific replacement models depend on the exact application and regional market requirements.

Need a specific D40PLF-1(S/N 2201-UP) part?

Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.