Komatsubulldozersmall ( - d39)
Komatsu D20P-3(S/N 20007-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D20P-3 is a compact crawler tractor designed for utility, landscaping, and light construction applications. This machine belongs to the D20 series and features a 4-cylinder 4D92-1A engine delivering 35 hp (26.1 kW). Operating within a weight class of approximately 7,936.7 lb (3,600 kg), it utilizes a direct drive transmission with 3 forward gears and 2 reverse gears. The configuration is optimized for maneuverability in tight work zones.
The D20P-3 represents a specific generation within the Komatsu crawler lineage, characterized by its robust 4D92-1A powertrain and specialized undercarriage setup. In today's used equipment market, this model remains highly relevant due to its availability of durable components and its suitability for low-impact earthmoving. Maintenance of the hydraulic steering system and engine cooling efficiency is critical for preserving resale value and operational uptime in secondary markets.
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 D20P-3(S/N 20007-UP) specifications
Engine
| Engine Model | 4D9-1A |
| Number of Cylinders | 4 |
| Gross Power | 35 hp (26.1 kW) |
| Power Measured @ | 2450 rpm |
| Displacement | 158.7 cu in (2.6 L) |
Weights
| Operating Weight | 7936.7 lb (3600 kg) |
Dimensions
| Length w/ Blade | 10.62 ft in (3235 mm) |
| Length w/o Blade | 8.17 ft in (2490 mm) |
| Width Over Tracks | 6.01 ft in (1830 mm) |
| Height To Top Of Cab | 6.93 ft in (2110 mm) |
| Ground Clearance | 1.24 ft in (375 mm) |
| Length of Track on Ground | 5.5 ft in (1675 mm) |
| Track Gauge | 4.34 ft in (1320 mm) |
| Standard Shoe Size | 20.08 in (510 mm) |
Undercarriage
| Ground Pressure | 2.56 psi (17.66 kPa) |
| Track Pitch | 5.32 in (135 mm) |
| Number of Shoes Per Side | 37 |
| Number of Track Rollers Per Side | 5 |
Performance
| Transmission Type | Direct Drive (DD) |
| Number of Forward Gears | 3 |
| Number of Reverse Gears | 2 |
Blades
| Standard Blade Width | 7.2 ft in (2180 mm) |
| Standard Blade Height | 23.1 in (585 mm) |
| Blade Capacity | 1 yd3 (0.8 m3) |
| Cutting Depth | 10.9 in (275 mm) |
Service Capacities
| Engine Oil Fluid Capacity | not documented for this exact serial range — verify with your dealer |
| Hydraulic System Fluid Capacity | not 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.
D20P-3(S/N 20007-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase (w/ filter) | not documented | 10w/30 or 15w/40 engine oil |
| Cooling System | not documented | Antifreeze Blue Concentrate or Red OAT |
| Transmission/Powertrain (Powershift) | not documented | 10w or 30w Transmission Fluid |
| Bevel Gear/Steering Compartments | not documented | 80w/90 GL4 or GL5 Gear Oil |
| Final Drives (each) | not documented | 80w/90 EP GL5 |
| Hydraulic System/Tank | not documented | ISO HLP 32, 46, or 68 Hydraulic Oil |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu D20P-3(S/N 20007-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the D20P-3(S/N 20007-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor 4D92-1A engine oil for particulate contamination to prevent cylinder wear. Regularly analyze hydraulic fluid quality; high moisture or metallic content indicates seal degradation or pump fatigue. Ensure Komatsu genuine lubricants are used to maintain viscosity standards. Track ground pressure and fluid clarity to detect early signs of component failure in the direct drive transmission.
Corrective & Common Repairs
Address hydraulic leaks at hoses and seals immediately to prevent loss of lifting capacity or sluggish blade response. Inspect steering clutch and brake components if uneven turning occurs, as this often indicates internal wear. Monitor the 4D92-1A engine for overheating symptoms, which may require cleaning the radiator or replacing thermostat components to restore proper thermal regulation.
Overhaul & Rebuild Points
Plan major undercarriage overhauls when track shoe wear or pitch elongation exceeds service limits. During engine rebuilds, focus on the 4D92-1A cylinder head and valve train integrity. Evaluate transmission rebuild requirements if gear engagement becomes inconsistent. Inspect final drive assemblies for gear pitting or bearing play to ensure long-term structural reliability of the crawler chassis.
Seasonal & Environment Servicing
In dusty environments, increase air cleaner inspection frequency to prevent engine aspiration issues. During cold operations, verify battery charge levels and heater functionality for the 4D92-1A diesel engine. For wet or muddy conditions, prioritize cleaning track rollers and idlers to prevent debris buildup that accelerates undercarriage wear and increases ground pressure beyond 2.6 psi.
D20P-3(S/N 20007-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07000-02080 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 09655-00120 | Plate? Instruction,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 07000-02075 | O-Ring,Steering Oil Filter | Lubrication service | Check fitment → |
| 101-60-15171 | Element,Steering Oil Filter | Lubrication service | Check fitment → |
| 102-60-00222 | Oil Filter Ass'Y | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D20P-3(S/N 20007-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E03 | Swing parking brake system or safety lever system discrepancy | Lever connectivity issues or alignment problems | Inspect lever connectivity and alignment |
| E10 | Engine controller power failure or engine management system malfunction | Engine stall or circuit malfunction in the control drive system | Examine interfacing points; consider controller replacement if failure persists |
| E11 | Engine control system failure | System error causing reduction of output power to protect the engine | Check engine control systems for malfunctions |
| E14 | Feedback system failure | Abnormalities within the feedback loop | Inspect feedback system components |
| E15 | Engine sensor malfunction | Faults in temperature, fuel pressure, or oil pressure sensors | Verify integrity of engine sensors |
| CA2639 | Failure code check required when starting switch is ON | Not specified | Check for display of the code with starting switch in ON position |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D20P-3(S/N 20007-UP) attachments & work tools
Blades
Standard blade width is 7.2 ft (2.2 m) with a capacity of 1 yd³ (0.76 m³). Available configurations include level cut, U-type, SU-blade, straight, angle, and tilt blades.
Rippers
Compatible with multi-shank ripper attachments featuring high-strength alloy steel shanks. Heavy-duty rippers are available for rock, soil, and frozen ground applications.
Winches
not documented for this exact serial range — verify with your dealer.
Drawbars/counterweights
not documented for this exact serial range — verify with your dealer.
Cab/ROPS guarding options
Equipment may feature a 4-post canopy or specialized forestry/waste configurations; consult factory spec sheets for specific guard availability.
Hydraulic arrangement notes
System supports hydraulic tilt and angle-tilt frame components. Maintenance of steering and lifting functions requires monitoring hydraulic fluid levels and quality to prevent sluggish operation.
All D20P-3(S/N 20007-UP) assemblies by section
Every catalogued assembly group for the Komatsu D20P-3(S/N 20007-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 : D20p-3(S/N 20007-Up) : Engine Related Parts And Electrical System : Battery
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 8 |
Komatsu : D20p-3(S/N 20007-Up) : Engine Related Parts And Electrical System : Compression Release Lever
| 01***16 | Bolt,(For Slag Handling) | 3 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Engine Related Parts And Electrical System : Engine Attaching Parts
| 01***35 | Bolt,(For Pedal Steering) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 8 |
| 10***40 | Engine Ass'Y | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Engine Related Parts And Electrical System : Fuel Control Lever
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
Komatsu : D20p-3(S/N 20007-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(For Slag Handling) | 6 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Engine Related Parts And Electrical System : Head Lamp And Wiring
Komatsu : D20p-3(S/N 20007-Up) : Engine Related Parts And Electrical System : Instrument Panel Regulator And Fuse Box
| 01***14 | Bolt | 4 |
| 01***16 | Bolt (Welded) | 3 |
| 01***16 | Bolt,(For Slag Handling) | 7 |
Komatsu : D20p-3(S/N 20007-Up) : Engine Related Parts And Electrical System : Radiator
| 01***10 | Bolt, Mount Flasher | 4 |
| 01***14 | Bolt | 4 |
| 01***16 | Bolt (Welded) | 13 |
Final Drive And Steering System
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Bevel Gear And Shaft
| 01***30 | Bolt,Radio Controlled Slag Handling | 16 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 8 |
| 01***36 | Washer,Radio Controlled Slag Handling | 16 |
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Brake
| 01***12 | Bolt (M8-1.25x12) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
| 01***06 | Nut? L.H. Thread,R.H. Thread | 2 |
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Brake Pedal
| 01***20 | Screw,Set | 3 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Final Drive And Sprocket(#20011-31196)
| 01***22 | Bolt,(Cold Terrain Spec.) | 12 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Final Drive And Sprocket(#31197-)
| 01***22 | Bolt,(Cold Terrain Spec.) | 12 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Steering Booster Spring Housing
| 01***12 | Bolt (M8-1.25x12) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 17 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Steering Case And Main Frame
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 4 |
| 01***20 | Bolt,(Used When Towing Winch) | 6 |
| 01***30 | Stud - M12 X 1.75 | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Steering Clutch
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 1 |
| 01***40 | Bolt | 1 |
| 01***10 | Nut,(For Slag Handling) | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Final Drive And Steering System : Steering Control Lever
| 01***35 | Bolt, Mounting - Flywheel Housing End | 7 |
| 01***20 | Screw,Set | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 7 |
Main Clutch And Transmission
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Clutch Pedal
| 01***06 | Nut? L.H. Thread,R.H. Thread | 2 |
| 01***08 | Nut,R.H. Thread | 3 |
| 04***15 | Pin,Cotter (Op) | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Gearshift Lever And Fork
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***12 | Screw | 4 |
| 01***20 | Screw,Set | 3 |
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Inertia Brake And Universal Joint (1/2)
| 01***12 | Bolt,(Without R.P.C.U.) | 4 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Inertia Brake And Universal Joint (2/2)
| 01***12 | Bolt,(Without R.P.C.U.) | 4 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Main Clutch Housing And Booster Spring
| 01***12 | Bolt,(Without R.P.C.U.) | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Main Clutch Plate
| 01***10 | Bolt, Mount Flasher | 6 |
| 01***16 | Bolt (Welded) | 6 |
| 01***18 | Bolt | 6 |
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Oil Cooling Piping
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 2 |
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Shaft And Gear
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***10 | Nut | 1 |
| 01***10 | Nut | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Main Clutch And Transmission : Transmission Case
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
Optional Parts
Komatsu : D20p-3(S/N 20007-Up) : Optional Parts : Angle Blade
| 01***45 | Bolt,(Cold Terrain Spec.) | 8 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 12 |
| 01***05 | Bolt | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Optional Parts : Canopy
| 01***25 | Bolt - Rear Guard Mounting | 8 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***10 | Nut,(Without Air Conditioner) | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Optional Parts : Head Guard
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***75 | Bolt,(For D65e) | 24 |
Komatsu : D20p-3(S/N 20007-Up) : Optional Parts : Mask? Reinforced Type
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 04***20 | Pin,Cotter (For Russian) | 4 |
Tool And Kit
Komatsu : D20p-3(S/N 20007-Up) : Tool And Kit : Service Kit
| 01***18 | Nut? Shoe (Kit) | 50 |
| 04***10 | Wire,Lock? Lever Set Bolt | 3 |
| 04***20 | Wire (Kit) | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Tool And Kit : Tool
| 07***00 | Nozzle, Grease Pump (Flexible Type) | 1 |
| 07***00 | Grease Pump Ass'Y | 1 |
| 09***06 | Wrench Set,8x10? 12x14? 13x17? | 1 |
Track And Guard
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Carrier Roller
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Engine Hood? Guard And Fender
| 01***16 | Bolt,(For Slag Handling) | 14 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Front Idler
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
| 01***11 | Nut,(For Center Guard) | 2 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Hitch(#20011-31196)
| 01***35 | Bolt,(For Pedal Steering) | 4 |
| 01***42 | Washer,Spring (For Pedal Steering) | 4 |
| 04***12 | Pin,Cotter? Inertia Brake | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Hitch(#31197-)
| 01***35 | Bolt,(For Pedal Steering) | 4 |
| 01***42 | Washer,Spring (For Pedal Steering) | 4 |
| 04***40 | Pin,Cotter | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Mark And Caution Plate
| 04***60 | Screw, Serial Number Plate | 4 |
| 09***35 | Plate? Name,Machine (Limited Supply) | 1 |
| 09***00 | Plate? Instruction,Water Level | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Operator'S Seat(#20011-31196)
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Operator'S Seat(#31197-)
| 01***25 | Bolt,(Without Auto Priming System) | 6 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 7 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Recoil Spring(#20011-32011)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Recoil Spring(#32012-)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Rigid Bar
| 01***40 | Bolt,(Not Used With Cab) | 8 |
| 01***40 | Bolt,(For Center Guard) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 8 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Track Frame
| 01***35 | Bolt,(For Pedal Steering) | 16 |
| 01***45 | Bolt, Fuel Tank Mounting - Front Right | 20 |
| 01***42 | Washer,Spring (For Pedal Steering) | 16 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Track Roller
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 40 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 12 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Track Roller Guard
| 01***25 | Bolt,(For Slag Handling) | 36 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 8 |
| 01***36 | Washer,Radio Controlled Slag Handling | 8 |
Komatsu : D20p-3(S/N 20007-Up) : Track And Guard : Track Shoe
| 01***18 | Nut? Shoe (Kit) | 296 |
| 10***12 | Track Link Ass'Y | 1 |
| 10***13 | Track Link Ass'Y | 1 |
Work Equipment And Its Control System
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Blade
| 01***40 | Bolt,(Dust And Dirt Protection) | 8 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 16 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 12 |
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Control Valve
| 01***15 | Bolt | 2 |
| 01***75 | Bolt,(See Fig.0142) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Hydraulic Cylinder
| 01***35 | Bolt,(Without Auto Priming System) | 4 |
| 01***45 | Bolt,(S6d155-4b) | 4 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Hydraulic Filter
| 01***30 | Bolt,Radio Controlled Slag Handling | 3 |
| 01***45 | Bolt,(For Slag Handling) | 4 |
| 01***36 | Washer,Radio Controlled Slag Handling | 3 |
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Hydraulic Piping (Control Valve To Cylinder)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Hydraulic Piping (Tank To Pump To Filter To Control Valve)
| 01***35 | Bolt,(Without Auto Priming System) | 4 |
| 01***45 | Bolt,(S6d155-4b) | 8 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Hydraulic Pump
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 8 |
| 04***18 | Ring, Snap | 1 |
| 07***60 | Seal,Bracket | 1 |
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Hydraulic Pump Mounting
| 01***22 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
Komatsu : D20p-3(S/N 20007-Up) : Work Equipment And Its Control System : Hydraulic Tank And Control Lever
| 01***18 | Bolt | 2 |
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
Frequently asked questions
What engine is installed in the Komatsu D20P-3?
The machine is powered by a Komatsu 4D92-1A, 4-cylinder diesel engine with a displacement of approximately 158.7 cu in (2.6 L).
What is the operating weight of this model?
The operating weight for the D20P-3 is approximately 7,936.7 lb (3,600 kg).
What machine replaced the D20P-3?
Specific successor model information is not documented in the provided technical literature.
What D20P-3(S/N 20007-UP) owners discuss
What are the common hydraulic system failure modes for the D20P-3?
Hydraulic leaks frequently occur due to wear on hoses and seals. Insufficient fluid levels can result in sluggish machine operation and reduced lifting capacity. Additionally, hydraulic overheating is a known issue during operation.
What engine model is used in the Komatsu D20P-3 (S/N 20007-UP)?
The machine is equipped with a Komatsu 4D92-1A 4-cylinder engine, providing 35 hp (26 kW) of gross power at 2450 rpm.
What steering issues have been reported by operators using this model?
Operators have reported the machine stalling when attempting to turn left. Some units may also exhibit uneven turning, where the dozer turns more easily in one direction than the operating direction, often requiring steering clutch adjustment.
What are the typical undercarriage specifications for this machine?
The undercarriage features 37 shoes per side with a 5.4 in (13.7 cm) track pitch. The setup includes 5 track rollers per side and a standard shoe size of approximately 20.1 in (51.1 cm).
What engine-related maintenance concerns should be monitored?
Engine overheating can occur if the cooling system is not properly maintained, specifically due to radiator clogging or thermostat failure. Ensure regular checks of the cooling system and fuel quality.
What should be checked when inspecting a used D20P-3 (S/N 20007-UP) for purchase?
Verify that the serial number on the chassis plate matches the number engraved on the frame casting to rule out stolen equipment. Inspect the hydraulic system for leaks and check the steering clutches for consistent response in both directions. Have your dealer verify the engine serial number against the chassis serial to confirm original configuration.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific D20P-3(S/N 20007-UP) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.