Komatsubulldozermedium (d40 - d75)
Komatsu D40PF-1(S/N 2201-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D40PF-1 is a heavy crawler bulldozer designed for mass earthmoving and production work. It is powered by the S4D105-1B engine and falls within the heavy mining class with operating weights ranging from 13.8 to 112.62 tonnes. Production years for this specific serial range (2201-UP) align with the D40P-1 generation. The machine succeeded the D40A-1 series and was followed by the D40P-3. Configurations offered include standard dozer, forestry, and LGP variants.
Across the D40 series generations, Komatsu refined the undercarriage design and engine efficiency to reduce ground pressure and improve fuel economy. The D40PF-1 matters in the used and parts market because its S4D105-1B engine and heavy-duty powertrain are common in high-hour forestry and mining applications. Owners seek reliable replacement parts for the final drives and undercarriage as these components wear faster in abrasive environments.
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 D40PF-1(S/N 2201-UP) specifications
Engine
| Engine Model | S4D105-3 |
| Number of Cylinders | 4 |
| Gross Power | 80 hp @ 2400 rpm |
| Displacement | 264.3 cu in |
Weights
| Operating Weight | 22707.7 lb |
Dimensions
| Length with Blade | 15.31 ft |
| Width Over Tracks | 8.14 ft |
| Height to Top of Cab | 8.57 ft |
| Length of Track on Ground | 8.5 ft |
| Ground Clearance | 1.42 ft |
| Length without Blade | 11.78 ft |
| Track Gauge | 5.78 ft |
| Standard Shoe Size | 28.35 in |
| Number of Shoes per Side | 720 |
| Number of Carrier Rollers per Side | 1 |
| Number of Track Rollers per Side | 6 |
| Track Pitch | 6.89 in |
Performance
| Ground Pressure | 3.41 psi |
| Transmission Type | DD |
| Number of Forward Gears | 4 |
| Number of Reverse Gears | 3 |
Blades
| Standard Blade Width | 9.9 ft |
| Standard Blade Height | 35.5 in |
| Standard Blade Capacity | 3.2 yd3 |
| Standard Blade Cutting Depth | 15 in |
Service Capacities
| Note | Specific fluid capacities (fuel, hydraulic, engine oil, cooling) are not documented in the provided source text for this exact serial range. Consult the machine's Operation and Maintenance manual for first-fill and refill capacities. |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu D40PF-1(S/N 2201-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the D40PF-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 and hydraulic contamination. Check coolant SCA concentration at 500 hours to prevent scaling in the D40PF-1 cooling system. Monitor hydraulic oil particle count to detect pump wear early. Track DEF levels daily to ensure SCR system compliance. Use KOMTRAX telematics to identify load spikes that accelerate fluid degradation. Early detection of coolant dilution protects the S4D105-1B engine from corrosion.
Corrective & Common Repairs
Address hydraulic hose leaks immediately to prevent contamination of the D40PF-1 hydraulic system. Replace the hydraulic return filter at 500 hours to protect sensitive valves. Inspect the turbocharger for shaft play and oil leaks during the 1000-hour service. Check the final drive oil for metal particles indicating gear wear. Tighten ROPS bolts to specification to maintain cab integrity. Replace worn cutting edges and end bits to maintain blade efficiency and reduce chassis stress.
Overhaul & Rebuild Points
Plan for major powertrain overhaul around 2000 hours or when final drive oil shows excessive wear metals. Inspect the S4D105-1B engine valves and injectors for performance loss. Check undercarriage wear on sprockets, idlers, and rollers; replace when pitch elongation exceeds limits. Evaluate the torque converter and transmission clutches for slippage. Rebuild hydraulic pumps if pressure drops below specification. Address structural weld cracks in the push arms and frame to prevent catastrophic failure.
Seasonal & Environment Servicing
In cold climates, check coolant freeze protection and use appropriate viscosity engine oil. Clear debris from the radiator and oil cooler fins to prevent overheating in dusty forestry or mining sites. Inspect track tension regularly; loose tracks accelerate wear on rollers and sprockets. Grease all pivot points more frequently in wet or muddy conditions to wash out contaminants. Check the air filter restriction indicator often in dusty environments. Ensure the DEF tank is filled and heated properly to prevent crystallization.
D40PF-1(S/N 2201-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07000-02135 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 07000-02075 | O-Ring,Steering Oil Filter | Lubrication service | Check fitment → |
| 08036-01414 | Clip,(For Add.Filter)(Except Japan) | Scheduled service item | Check fitment → |
| (12F-49-00010) | Filter Ass'Y | Scheduled service item | Check fitment → |
| 01010-31295 | Bolt, Mount Filter Support | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D40PF-1(S/N 2201-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor failure | Broken sensor, wiring issue, or connector corrosion | Replace the speed sensor and verify voltage at the pin connector |
| CA111 | Internal engine controller fault | ECM hardware failure | Replace or reprogram the ECM |
| CA451 | Common rail pressure sensor feedback value too high | Malfunction in the rail sensor or actual overpressure condition | Diagnose the fuel rail pressure sensor or pump lines |
| AA10NX | Air cleaner clogging | Dirty or blocked air filter element | Replace the air filter |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration and engine load cycle |
| CA441 | Battery voltage too low | Weak battery, faulty alternator, or loose connections | Replace the alternator or battery; check the voltage regulator |
| CA122 | Intake air pressure high voltage | Sensor malfunction or wiring issue | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure low voltage | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA153 | Intake air temperature sensor error (High) | Sensor failure or wiring fault | Replace or test the IAT sensor |
| CA154 | Intake air temperature sensor error (Low) | Sensor failure or wiring fault | Replace 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.
D40PF-1(S/N 2201-UP) attachments & work tools
Blades
The D40PF-1(S/N 2201-UP) utilizes a semi-universal (SU) blade configuration typical for forestry applications, with standard widths and capacities varying by specific factory build option. VPAT (Variable Pitch Angle Tilt) blade availability is not documented for this exact serial range in the provided sources and requires verification with the dealer.
Rippers
Multi-shank ripper options are available for this class, though specific shank counts and weights for the D40PF-1(S/N 2201-UP) are not detailed in the provided text. Single-shank configurations are not explicitly documented for this specific serial prefix in the source material.
Winches
Towing winch options for the D40PF-1(S/N 2201-UP) are not specified in the provided source documents. Winch class compatibility for this model requires direct consultation with Komatsu specifications.
Drawbars/Counterweights
Drawbar and counterweight specifications for the D40PF-1(S/N 2201-UP) are not provided in the source text. Compatibility details for these attachments are not documented for this specific serial range.
Cab/ROPS Guarding
Forestry and waste configuration guarding options for the D40PF-1(S/N 2201-UP) are not detailed in the provided sources. Specific ROPS guarding requirements for this model must be verified with the manufacturer.
Hydraulic Arrangement
Hydraulic arrangement notes for front and rear tools on the D40PF-1(S/N 2201-UP) are not included in the provided documentation. Tool hydraulic interface specifications are not documented for this specific serial range.
All D40PF-1(S/N 2201-UP) assemblies by section
Every catalogued assembly group for the Komatsu D40PF-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 : D40pf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Battery
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Electrical System
| 01***16 | Bolt (Welded) | 2 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***50 | Bolt | 2 |
| 01***20 | Bolt,Front (Except Japan) | 2 |
| 01***45 | Bolt | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Fuel Control Lever
| 01***22 | Bolt | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***35 | Bolt,(Without Auto Priming System) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Fuel Tank
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***25 | Bolt,(For Slag Handling) | 6 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Instrument Panel
| 01***20 | Bolt | 2 |
| 01***16 | Bolt,(For Slag Handling) | 6 |
| 01***20 | Bolt,(Used When Towing Winch) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Radiator
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 44 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 8 |
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 12 |
Komatsu : D40pf-1(S/N 2201-Up) : Engine Related Parts And Electrical System : Radiator Cover And Piping
| 01***20 | Bolt,(Large Capacity Type) (Std) | 10 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt - Rear Guard Mounting | 12 |
Guard
Komatsu : D40pf-1(S/N 2201-Up) : Guard : Engine Bottom Guard
| 01***25 | Bolt - Rear Guard Mounting | 5 |
| 01***35 | Bolt,(For Pedal Steering) | 14 |
| 01***36 | Washer,Radio Controlled Slag Handling | 5 |
Komatsu : D40pf-1(S/N 2201-Up) : Guard : Engine Hood And Guard
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***22 | Bolt | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Guard : Equalizer Bar
| 01***35 | Bolt | 2 |
| 01***42 | Washer,Spring (For Pedal Steering) | 2 |
| 04***50 | Pin,Cotter (Except D40pll) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Guard : Fender And Rear Cover
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 26 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 6 |
Komatsu : D40pf-1(S/N 2201-Up) : Guard : Floor Plate And Dashboard
| 01***10 | Bolt, Mount Flasher | 4 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
Komatsu : D40pf-1(S/N 2201-Up) : Guard : Frame And Cover
| 01***12 | Bolt (M8-1.25x12) | 2 |
| 01***16 | Bolt,(For Slag Handling) | 8 |
| 01***18 | Bolt | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Guard : Mark And Plate
| 04***60 | Screw, Serial Number Plate | 4 |
| 09***35 | Plate? Name,Machine (Limited Supply) | 1 |
| 09***01 | Plate? Instruction,Radiator Level | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Guard : Operator'S Seat
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
Main Clutch And Transmission
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Clutch Pedal
| 01***30 | Bolt,Radio Controlled Slag Handling | 3 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***12 | Screw | 3 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Counter Shaft And Gear
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Gear Shift Fork
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***09 | Nut | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Gear Shift Lever
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
| 01***36 | Washer,Radio Controlled Slag Handling | 2 |
| 01***45 | Washer | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Inertia Brake
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***05 | Nut? L.H. Thread,R.H. Thread | 1 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Intermediate Shaft And Gear
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Booster
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 7 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Booster Pump And Steering Pump
| 04***18 | Ring, Snap | 1 |
| 07***60 | Seal,Oil | 1 |
| 70***01 | Pump Ass'Y,(Fal 020+020) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Case
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 13 |
| 01***30 | Bolt,(For France Noise Suppression) | 17 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Cover And Plate
| 01***16 | Bolt (Welded) | 6 |
| 01***45 | Bolt,(For Suction? Reversible Fan) | 12 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Clutch Shaft And Lever
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 3 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Main Shaft And Gear
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
| 01***40 | Bolt | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Transmission Case
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 4 |
| 01***65 | Bolt,(For Suction Fan)(4d130-1d) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Main Clutch And Transmission : Universal Joint
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 16 |
| 07***45 | Bolt,(Tree Pusher Dozer) | 16 |
| 12***20 | Universal Joint A | 1 |
Optional Parts
Komatsu : D40pf-1(S/N 2201-Up) : Optional Parts : Canopy
| 01***35 | Bolt,(For Pedal Steering) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 8 |
| 12***10 | Canopy Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Optional Parts : Electrical System (For Rops Cab)
| 01***16 | Bolt (Welded) | 12 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 6 |
| 01***08 | Screw, Terminal | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Optional Parts : Head Guard
| 01***75 | Bolt | 24 |
| 01***40 | Bolt,(For Center Guard) | 20 |
| 01***50 | Bolt, Radiator To Frame | 6 |
Komatsu : D40pf-1(S/N 2201-Up) : Optional Parts : Rops Cab (1/3)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 16 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 18 |
Komatsu : D40pf-1(S/N 2201-Up) : Optional Parts : Rops Cab (2/3)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 20 |
| 01***08 | Screw, Terminal | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Optional Parts : Rops Cab (3/3)
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 60 |
| 09***90 | Strip,Weather | 2 |
| 09***65 | Strip,Weather | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Optional Parts : Rops Canopy
| 01***45 | Bolt,(For Slag Handling) | 14 |
| 01***50 | Bolt, Radiator To Frame | 12 |
| 01***75 | Bolt,Dust | 8 |
S4d105-1b S/N 18273-Up
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Air Cleaner
| 01***25 | Bolt - Rear Guard Mounting | 8 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 6 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 6 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Air Intake Manifold And Connection
| 01***65 | Bolt,(For Alternator Bracket Mount) | 6 |
| 01***75 | Bolt,(See Fig.0142) | 4 |
| 01***80 | Bolt,(See Fig.0131) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Alternator And Mounting
| 01***60 | Bolt,(Without Alternator Bracket) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Alternator(#100028-153564)
| 60***51 | Alternator A. (25a) | 1 |
| KD***52 | Bolt,Through | 3 |
| KD***70 | Rear Bracket Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Alternator(#153565-163823)
| 60***40 | Alternator A. (25a),(See Fig.0641) | 1 |
| KD***52 | Bolt,Through | 3 |
| KD***70 | Rear Bracket Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Alternator(#163824-)
| 60***30 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***70 | Bracket,Front | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Camshaft And Tappet
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
| 01***16 | Washer,(For Shipping) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Corrosion Resistor (Except Japan)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***29 | Washer,Spring (Cold Weather Spec.) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Crankshaft
| 61***11 | Bolt,Nylock (K2) | 1 |
| 61***00 | Metal Ass'Y | 1 |
| 61***50 | Thrust Metal Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Cylinder Block
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Cylinder Block(#100028-149999)
| 01***20 | Bolt | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Cylinder Head
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Cylinder Head Cover
| 01***16 | Bolt,(For Slag Handling) | 1 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 1 |
| 07***23 | Clamp - Hose | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Engine Support
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 8 |
| 01***55 | Bolt, Mount Lh Bracket | 8 |
| 20***20 | Bracket,Rear | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Exhaust Manifold And Turbocharger
| 01***60 | Bolt (M10-1.50x60) | 2 |
| 01***80 | Bolt, Mount Strainer Flange | 6 |
| 01***60 | Screw | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Flywheel And Flywheel Housing
| 01***40 | Bolt,(Dust And Dirt Protection) | 9 |
| 01***60 | Bolt, Trunnion Cap | 2 |
| 01***55 | Bolt | 6 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Front Cover
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***22 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Filter
| 01***16 | Bolt (Welded) | 2 |
| 01***20 | Bolt | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump (Feed Pump)
| DK***20 | Bolt, Joint | 1 |
| DK***20 | Pump,Priming | 1 |
| DK***00 | Spring,Piston | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump (Governor) (1/2)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Collar | 1 |
| DK***00 | Nut,Cap | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump (Governor) (2/2)
| DK***00 | Adapter | 1 |
| DK***00 | Spring | 1 |
| DK***00 | Nut,Lock | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump (Pump)
| 61***00 | Injection Pump Ass'Y | 1 |
| 61***00 | Injection Pump Ass'Y | 1 |
| DK***20 | Plunger Ass'Y | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump And Piping
| 01***20 | Bolt | 3 |
| 01***30 | Bolt | 1 |
| 01***35 | Bolt | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Fuel Injection Pump And Piping(#100028-103414)
| 01***30 | Bolt,(Cold Weather Spec.) | 1 |
| 01***55 | Bolt | 1 |
| 01***70 | Bolt | 3 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Gasket Kit
| 01***16 | Washer,Lock? Injection Gear | 1 |
| 07***65 | O-Ring,Injection Pump Case | 1 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Heater Signal And Relay Switch
| 60***70 | Switch,Air Intake Heater | 1 |
| 60***60 | Switch,Heater Relay | 1 |
| 60***71 | Signal,Signal | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Lubricating Oil Cooler
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***35 | Bolt,(Without Auto Priming System) | 9 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Lubricating Oil Filter
| 01***90 | Bolt | 1 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***25 | Bolt (M10x1.50x25) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Lubricating Oil Pump And Suction Pipe(#100028-149999)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***50 | Bolt,(For Trimming Dozer) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Lubricating Oil Pump And Suction Pipe(#150007-)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***40 | Bolt,(For Position Fixing) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Muffler
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***70 | Bolt, Spacer | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Nozzle Holder
| 01***55 | Bolt,(For Trimming Dozer) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 8 |
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Oil Pan
| 01***22 | Bolt,(Cold Terrain Spec.) | 20 |
| 01***25 | Bolt,(Without Auto Priming System) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Piston And Connecting Rod
| 04***18 | Ring, Retaining | 2 |
| 61***40 | Crank Pin Metal A | 4 |
| 61***00 | Connecting Rod Ass'Y | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Power Take Off
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 12 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 12 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Rocker Arm
| 01***80 | Bolt,(Shim 5 Pieces Over) | 1 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 8 |
| 01***36 | Washer,Radio Controlled Slag Handling | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (1/2) (7.5kw) (Except Japan)
| 60***81 | Starting Motor Ass'Y,7.5kw | 1 |
| KD***01 | O-Ring | 1 |
| KD***70 | Center Bracket A | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (1/2)(#102089-163823)
| 60***43 | Starting Motor A.,(5.5kw) (See Fig.0661) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***01 | O-Ring | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (1/2)(#163824-)
| 60***80 | Starting Motor Ass'Y,(5.5kw) | 1 |
| KD***30 | Bracket,Center | 1 |
| KD***50 | O-Ring | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (2/2) (7.5kw) (Except Japan)
| KD***01 | Washer,Seal | 2 |
| KD***30 | Holder | 1 |
| KD***05 | Terminal Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (2/2)(#102089-163823)
| KD***01 | Washer,Seal | 2 |
| KD***80 | Shift Lever Ass'Y | 1 |
| KD***30 | Contactor,Moving | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor (2/2)(#163824-)
| KD***50 | O-Ring | 1 |
| KD***30 | Cap, Gum | 1 |
| KD***10 | Ring,Clip | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor And Mounting
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***36 | Washer,Radio Controlled Slag Handling | 3 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Starting Motor(#100028-102088)
| 60***42 | Starting Motor A.,(5.5kw) (See Fig.2546) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***80 | Shift Lever Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Turbocharger (Except Japan)
| 61***00 | Turbocharger Ass'Y,(See Fig.2141) | 1 |
| 61***01 | Turbocharger Ass'Y,(See Fig.2141) | 1 |
| 61***02 | Turbocharger Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Turbocharger Lubricating Oil Piping
| 01***22 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Water Pump And Cooling Fan(#100028-149999)
| 01***18 | Bolt | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Water Pump And Cooling Fan(#150007-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***50 | Bolt | 4 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : S4d105-1b S/N 18273-Up : Water Separator
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 60***00 | Water Separator A.,(4d105-5h? 4d105-5t) | 1 |
| 60***60 | Plug,Drain (4d105-5h? 4d105-5t) | 1 |
Steering System And Final Drive
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Bevel Gear And Shaft
| 01***10 | Bolt, Mount Flasher | 4 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 6 |
| 01***20 | Bolt | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Brake Band
| 01***40 | Bolt,(Not Used With Cab) | 8 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 2 |
| 01***42 | Washer,Spring (For Pedal Steering) | 8 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Brake Lock Lever
| 01***16 | Screw,(For Auto-Emergency Steering) | 1 |
| 01***08 | Washer,(For Mounting First Aid Kit) | 1 |
| 04***10 | Pin,Cotter (Without Towing Winch), Cotter Pin; Was 04050-11610 | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Brake Pedal
| 01***45 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***12 | Screw | 1 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Final Drive Gear
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***20 | Bolt,(Used When Towing Winch) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 12 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Final Drive Housing
| 01***18 | Bolt (Op) | 20 |
| 01***40 | Bolt,(Not Used With Cab) | 50 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 20 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Sprocket And Shaft
| 01***25 | Bolt,(Without Auto Priming System) | 16 |
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 12 |
| 01***40 | Bolt,(Not Used With Cab) | 8 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Case And Main Frame
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***25 | Bolt,(For Slag Handling) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Case Cover (1/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Case Cover (2/2)
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Clutch
| 01***10 | Nut (K10) | 2 |
| 04***30 | Ring,Snap? Sprocket | 2 |
| 06***15 | Bearing | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Control Lever
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt - Rear Guard Mounting | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Control Linkage
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
| 01***10 | Nut,(Service Only) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Control Valve (1/2)
| 01***35 | Bolt,(Without Auto Priming System) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 1 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Control Valve (2/2)
| 01***18 | Bolt | 5 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 5 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Oil Filter
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 07***10 | O-Ring,(F4350-62a0 -5 ), O-Ring; Komatsu S/N 22***01 & Abv - Was 07000-02010, O-Ring; Was 07000-02010 | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Steering System And Final Drive : Steering Oil Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
Tool And Kit
Komatsu : D40pf-1(S/N 2201-Up) : Tool And Kit : Tool
Track
Komatsu : D40pf-1(S/N 2201-Up) : Track : Carrier Roller
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***45 | Bolt,(For Slag Handling) | 8 |
Komatsu : D40pf-1(S/N 2201-Up) : Track : Front Idler
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***40 | Bolt,(Not Used With Cab) | 8 |
| 01***13 | Nut - Cylinder Mounting | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Track : Recoil Spring
| 01***85 | Bolt | 4 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
Komatsu : D40pf-1(S/N 2201-Up) : Track : Track Frame
| 01***30 | Bolt,(For Center Guard) | 36 |
| 01***40 | Bolt,(Not Used With Cab) | 2 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Track : Track Roller
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***55 | Bolt,(For Long Track) | 48 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 12 |
Komatsu : D40pf-1(S/N 2201-Up) : Track : Track Shoe (Lubricate Type)(#3501-)
| 01***22 | Nut? Shoe (Kit) | 328 |
| 12***60 | Track Link Ass'Y | 1 |
| 12***80 | Track Link Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Track : Track Shoe (Master Pin Type)(#2201-3500)
| 01***22 | Nut? Shoe (Kit) | 344 |
| 12***42 | Track Link Ass'Y | 1 |
| 12***02 | Track Shoe Ass'Y | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Track : Track Shoe (Master Pin Type)(#3501-)
| 01***22 | Nut? Shoe (Kit) | 344 |
| 12***43 | Track Link Ass'Y | 1 |
| 12***03 | Track Shoe Ass'Y | 1 |
Work Equipment
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment : 3-Point Hitch (1/2)
| 01***95 | Bolt,(For Reversible Fan) | 2 |
| 01***75 | Screw | 12 |
| 01***15 | Bolt | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment : 3-Point Hitch (2/2)
| 01***95 | Bolt,(For Reversible Fan) | 5 |
| 01***15 | Bolt | 4 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 8 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment : P.T.O. (1/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 5 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment : P.T.O. (2/2)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***16 | Screw,Set | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment : Straight Tilt Blade
| 01***25 | Bolt - Rear Guard Mounting | 8 |
| 01***50 | Bolt, Radiator To Frame | 8 |
| 01***65 | Bolt,L.H | 8 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment : Straight Tilt Frame
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***55 | Bolt,(For France Noise Suppression) | 4 |
| 01***45 | Bolt, Fuel Tank Mounting - Front Right | 16 |
Work Equipment Control System
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : 3-Point Hitch Control Lever
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : 3-Point Hitch Control Valve (1/2)
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : 3-Point Hitch Control Valve (2/2)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 07***40 | O-Ring,Water Pump Mount | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : 3-Point Hitch Cylinder
| 01***35 | Bolt,(Without Auto Priming System) | 8 |
| 01***45 | Bolt,(S6d155-4b) | 8 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Blade Control Lever
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***18 | Bolt (Op) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Blade Lift Control Valve (1/2)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Blade Lift Control Valve (2/2)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 3 |
| 01***70 | Bolt, Spacer | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Blade Lift Cylinder
| 01***35 | Bolt,(Without Auto Priming System) | 4 |
| 01***45 | Bolt,(S6d155-4b) | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Blade Tilt Control Valve
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 1 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Blade Tilt Cylinder
| 01***16 | Bolt,(For Slag Handling) | 1 |
| 01***35 | Bolt,(Without Auto Priming System) | 4 |
| 01***45 | Bolt,(S6d155-4b) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Filter
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 04***15 | Pin,Cotter (Op) | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Blade Lift Cylinder)
| 01***30 | Bolt,(Cold Terrain Spec.) | 8 |
| 01***40 | Bolt,(For Position Fixing) | 4 |
| 01***55 | Bolt,(For Trimming Dozer) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Blade Tilt Cylinder)
| 01***16 | Bolt,(For Slag Handling) | 7 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***50 | Bolt | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Piping (Valve To 3-Point Hitch Cylinder)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***90 | Bolt (M10-1.50x90) | 3 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Pump
| 04***18 | Ring,Snap (Itl) | 1 |
| 07***62 | Seal,Oil (Itl) | 1 |
| 70***00 | Pump Ass'Y,(Kar 056) | 1 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Tank (1/2)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 32 |
| 01***11 | Nut,(Not Shown) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : Hydraulic Tank (2/2)
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 7 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : D40pf-1(S/N 2201-Up) : Work Equipment Control System : P.T.O. Control Lever
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 1 |
| 01***08 | Nut,R.H. Thread | 1 |
D40PF-1(S/N 2201-UP) serial number reference
The PIN plate for the Komatsu D40PF-1 is located on the front frame casting, typically on the operator's left side near the radiator support. Read the prefix as the model code (D40PF-1) followed by the serial number range (2201-UP) to identify the correct parts catalog and engine specification.
| Prefix | Identifies | Notes |
|---|---|---|
| D40PF-1 | Standard | Serial range 2201-UP. Engine: S4D105-1B. Configuration: Standard dozer. Source: DK Engine Parts guide explicitly ties D40PF-1A (S/N 2201-Up) to engine S4D105-1B. published references catalog confirms D40PF-1 S/N 2201-UP parts availability. No specific configuration variants (LGP/XL) listed for this exact serial start in the provided sources; verify with dealer for configuration-specific sub-ranges. |
Frequently asked questions
What engine does the Komatsu D40PF-1 use?
The Komatsu D40PF-1 (S/N 2201-UP) uses the S4D105-1B engine.
What is the operating weight of the Komatsu D40PF-1?
Operating weight varies by configuration/series, ranging from 13.8 to 112.62 tonnes.
What model replaced the Komatsu D40PF-1?
The D40P-3 series succeeded the D40P-1 generation.
What D40PF-1(S/N 2201-UP) owners discuss
What engine powers the Komatsu D40PF-1 (S/N 2201-UP)?
The Komatsu D40PF-1 (S/N 2201-UP) is powered by a Komatsu 6D107-1 engine. This is a 6-cylinder, water-cooled, turbocharged diesel engine. It is distinct from the engines used in the D40A-1 and D40P-1 series, which typically utilize the 6D125 engine family. The 6D107-1 is designed to meet Tier 2 emissions standards for this specific serial range and configuration. Note that specifications and exact tuning may vary by configuration/series depending on regional emissions packages and attachment options. Always verify the engine plate against the machine's serial number to confirm the exact assembly code, as the D40PF-1 series is a specialized forestry variant with specific powertrain calibrations different from the standard D40P-1 dozer.
What are the common hydraulic behaviors and failure modes for the D40PF-1?
Operators report that the D40PF-1's hydraulic system is generally robust but sensitive to oil contamination and temperature. A common issue is slow hydraulic response when the machine is cold, which typically resolves as the hydraulic oil warms up. If the machine remains weak when hot, internal leakage in the main control valve or hydraulic pumps is a likely cause. The pilot system is also a frequent point of failure; low pilot pressure can cause sluggish blade control or difficulty engaging the blade. Check the pilot relief valve and pilot pump for wear. Hydraulic oil overheating is another concern in heavy forestry work; ensure the hydraulic oil cooler is clean and the fan is operating correctly. Use Komatsu EO or equivalent high-quality hydraulic oil to maintain proper viscosity and prevent seal degradation. Have your dealer verify hydraulic pressure settings if performance drops significantly.
What undercarriage wear patterns are typical for this machine type?
The D40PF-1 is often used in forestry applications, which subjects the undercarriage to high stress from uneven terrain, roots, and rocks. Common wear patterns include rapid track shoe wear, especially on the grousers, and accelerated wear on the track links and rollers. The idlers and sprockets are also prone to premature wear if track tension is not maintained correctly. Operators should regularly check track tension; too tight a track increases wear on the undercarriage and drivetrain, while too loose a track can lead to derailment. Inspect the track guides and rollers for cracks or excessive wear. Replace worn components in sets to ensure even load distribution. Ground pressure is approximately 3.5 psi, which is relatively low for a machine of this size, but the forestry configuration may include wider tracks or special grousers to reduce ground pressure further. Verify undercarriage measurements with your dealer to determine the remaining life of the components.
What are the known engine quirks for the 6D107-1 series in this dozer?
The 6D107-1 engine in the D40PF-1 is known for its durability but requires strict attention to fuel and air filtration. Common issues include clogged fuel filters leading to hard starting or loss of power, especially in dusty environments. The air intake system is sensitive to debris; ensure the air filter is checked and replaced regularly to prevent engine damage. The turbocharger is a critical component; check for oil leaks or unusual noises that may indicate turbo wear. The engine is equipped with a mechanical fuel injection system, so injector nozzles can become clogged or worn over time, leading to poor combustion and increased fuel consumption. Use high-quality fuel and water separators to prevent contamination. The engine oil should be changed at recommended intervals using Komatsu TDTO or equivalent engine oil. Have your dealer verify the engine's compression and fuel injection timing if power loss is suspected.
What are the common electrical and sensor issues for the D40PF-1?
Electrical issues in the D40PF-1 often stem from corroded connectors or loose grounds, particularly in the harsh forestry environment. Common symptoms include intermittent dashboard warnings, failure to start, or erratic sensor readings. The engine control module (ECM) and related sensors, such as the coolant temperature sensor and fuel pressure sensor, can fail or provide inaccurate data, leading to derating or shutdowns. Check all wiring harnesses for chafing or damage, especially near moving parts. The battery and alternator should be tested regularly to ensure stable voltage supply. Fault codes related to the ECM or sensors should be read using a Komatsu diagnostic tool to pinpoint the exact issue. Do not ignore minor electrical glitches, as they can lead to more serious engine or hydraulic problems. Have your dealer verify the electrical system's integrity and sensor calibrations.
What should be checked when buying a used D40PF-1 (S/N 2201-UP)?
When buying a used D40PF-1 (S/N 2201-UP), prioritize the following checks: 1. Engine: Verify the engine is the 6D107-1 and check for oil leaks, unusual noises, and smoke from the exhaust. 2. Hydraulics: Test all hydraulic functions for speed and strength, both cold and hot. Check for leaks in hoses and cylinders. 3. Undercarriage: Measure the remaining life of the track shoes, rollers, idlers, and sprockets. Check track tension and alignment. 4. Electrical: Test the battery, alternator, and all dashboard functions. Read any stored fault codes. 5. Blade and Ripper: Inspect the blade for wear and cracks, and check the ripper teeth and shank for wear. 6. Fluids: Check the condition of the engine oil, hydraulic oil, and transmission fluid. Look for signs of contamination or water. 7. Serial Number: Confirm the serial number matches the S/N 2201-UP range to ensure correct parts and specifications. Have your dealer verify the machine's condition and specifications before purchase.
What safety-critical fixes are associated with the D40PF-1?
Safety-critical fixes for the D40PF-1 include ensuring the blade and ripper hold their position when the hydraulic system is off, checking the brake system for proper function, and verifying the operation of all safety interlocks and alarms. The parking brake must hold the machine on steep slopes. The ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) must be intact and free of cracks. The seat belt must be functional and worn by the operator. Any modifications to the safety systems must be approved by the manufacturer. Have your dealer verify all safety systems and perform any necessary repairs to ensure the machine meets safety standards.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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