Komatsubulldozersmall ( - d39)
Komatsu D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer))
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D20P-5A (S/N 45003-UP) is a compact crawler tractor configured as a Power Angle Tilt Dozer. This machine belongs to the D20 series, featuring a 4-cylinder 4D92-2N engine delivering 39 hp (29.1 kW) at 2450 rpm. It operates with an approximate weight of 8620.1 lb (3910 kg) and utilizes a direct drive (DD) transmission with 3 forward gears and 2 reverse gears. The standard configuration includes a blade measuring 2560 mm (8.4 ft) in width and 590 mm (23.3 in) in height.
Across the D20 series, variations exist between straight tilt and power angle tilt configurations, as well as different serial number ranges for models like the D20P-5 and D20P-7A. The -5A designation specifically identifies the power angle tilt capability within this generation. This machine serves specialized utility in light clearing and grading, utilizing a compact footprint and the 4D92 engine series for performance in space-constrained 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 D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) specifications
Engine
| Engine Model | 4D92-2N |
| Number of Cylinders | 4 |
| Gross Power | 39 hp (29.1 kW) |
| Power Measured @ RPM | 2래50 rpm |
| Displacement | 179.5 cu in (2.9 L / 2941.5 cc) |
Weights
| Operating Weight | 8333.5 lb (3780 kg) to 8620.1 lb (3910 kg) |
Dimensions
| Length w/ Blade | 11.11 ft in (3385 mm) |
| Length w/o Blade | 8.11 ft in (2470 mm) |
| Width Over Tracks | 5.98 ft in (1820 mm) to 6.57 ft in (2000 mm) |
| Height To Top of Cab | 7.16 ft in (2180 mm) to 7.17 ft in (2185 mm) |
| Ground Clearance | 1.24 ft in (375 mm) to 16 in (406.4 mm) |
| Length of Track on Ground | 5.53 ft in (1685 mm) to 6 ft in (1707 mm) |
| Track Gauge | 4.3 ft in (1310 mm) to 52 in (1320.8 mm); varies by configuration |
| Standard Shoe Size | 20 in (510 mm) to 20.08 in (510.07 mm) |
| Track Pitch | 5 in (127 mm) to 5.4 in (137.16 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 |
| Ground Pressure | 2.7 psi (0.2 bar / 18.62 kPa) |
Blades
| Standard Blade Width | 7.2 ft in (2170 mm) to 8.4 ft in (2560 mm) |
| Standard Blade Height | 23.3 in (590 mm) |
| Blade Capacity | 0.86 m³ (1.2 yd³) to 1 m³ (1.3 yd³) |
| Cutting Depth | 12.6 in (320 mm) |
Service Capacities
| Fuel Capacity | 56.78 L (15 gal) |
| Engine Oil Fluid Capacity | Use 10W/30 or 15W/40 viscosity |
| Cooling System Fluid Capacity | Use Antifreeze Blue Concentrate or Red OAT 5 Year Antifreeze Coolant |
| Hydraulic System Fluid Capacity | Use 10W, 10W/30, or 10W Hydraulic Oil; HVI 46; ISO HLP 68; HVI 32 or 46 |
| Transmission/Powertrain Fluid Capacity | Use 80W/90 GL4 or GL5 Gear Oils; 85W/140 Axle, Gear Oil; 80W90 EP GL5 |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase (w/ filter) | not documented for this exact serial range — verify with your dealer | 10W-30, 15W-40 Engine Oil |
| Cooling System | not documented for this exact serial range — verify with your dealer | Antifreeze Blue Concentrate or Red OAT 5 Year Antifreeze Coolant |
| Fuel Tank | not documented for this exact serial range — verify with your dealer | not specified |
| Transmission/Powertrain (Powershift Transmission + Bevel Gear/Steering Compartments) | not documented for this exact serial range — verify with your dealer | 80W-90 GL4 or GL5 Gear Oils; Dexron II or Dexron III for Automatic Transmission and Steering Fluid |
| Final Drives (each) | not documented for this exact serial range — verify with your dealer | 80W-90 EP GL5 |
| Hydraulic System/Tank | not documented for this exact serial range — verify with your dealer | ISO HLP 32, ISO HLP 46, or HVI 46 Hydraulic Oil |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) 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 |
|
| Every 4,000 h |
|
Servicing the D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor the 4D92-2N engine oil and hydraulic system fluids regularly. Use Komatsu genuine lubricants to maintain engineering standards. Periodically analyze transmission oil for metal particulates to prevent gear failure. Check coolant strength and radiator cleanliness to avoid overheating during high-load operations. Consistent monitoring of fluid clarity helps identify early signs of component wear in the powertrain and hydraulic circuits.
Corrective & Common Repairs
Address frequent issues such as track tension loss or leaking hydraulic fittings immediately. Inspect the power angle tilt mechanism for cylinder seal wear or linkage binding. If engine performance drops, check the fuel separator for water contamination and inspect air cleaner elements. Ensure all electrical connections are free from corrosion to prevent sensor faults or starting difficulties in the 4D9/4D92 series engines.
Overhaul & Rebuild Points
Plan major overhauls around the 4000-hour mark, focusing on engine valve adjustments and cooling system flushing. Inspect final drive components and track rollers for excessive play or wear. During transmission rebuilds, evaluate all gear faces and clutch plates. For the undercarriage, monitor shoe thickness and track pitch degradation to determine when replacing the shoes per side is necessary for structural integrity.
Seasonal & Environment Servicing
For cold weather operation, ensure battery voltage is sufficient and pre-heat the engine if required. In dusty environments, increase frequency of air cleaner cleaning and radiator inspections to prevent clogging. During high-moarm moisture seasons, check track tension and grease all pivot points more frequently to combat debris buildup. Always verify the integrity of seals in the hydraulic system before operating in extreme temperature fluctuations.
D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 103-98-21150 | Plate? Caution,Oil Filter | Lubrication service | Check fitment → |
| 08036-01414 | Clip,(For Add.Filter)(Except Japan) | Scheduled service item | Check fitment → |
| 103-98-21350 | Plate? Caution,Hydraulic Filter | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) 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 |
| E10 | Engine controller power malfunction | Faulty ECM power connections, fuses, or ground wires | Inspect ECM power connections, fuses, or ground wires |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issues, or operator misuse | Verify throttle calibration and engine load cycle |
| CA441 / CA442 | Battery voltage too low or too high | Faulty alternator, battery, or voltage regulator | Replace the alternator or battery; check the voltage regulator |
| AA10NX | Air cleaner clogging | Accumulated debris in air filter | Replace the air filter |
| CA451 / CA452 | Common rail pressure error | Malfunction in fuel rail pressure sensor or pump lines | Diagnose the fuel rail pressure sensor or pump lines |
| B@BCZK | Engine coolant level too low | Coolant leak or insufficient reservoir level | Fill coolant and inspect system for leaks |
| A570NX | Engine oil filter clogging | Saturated or restricted filter element | Replace filter element |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) attachments & work tools
Blades
Standard blade width is 8.4 ft (2560 mm) or 7.2 ft (2170 mm), varies by configuration/series. Standard blade height is 23.3 in (590 mm) with a capacity of 1.2 yd³ (0.9 m³).
Rippers
Ripper attachments are available for this model. Multi-shank rippers featuring high-lift designs and alloy steel shanks are available.
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
Loader frame and floor plate guards are available for S/N 50001- and up. Specific forestry or waste configurations are not documented for this exact serial range — verify with your dealer.
Hydraulic arrangement notes
The machine utilizes a Komatsu 4D92-2N engine. Hydraulic oil specifications should follow Komatsu standards such as Komatsu HYDO or compatible 10w hydraulic oils.
All D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) assemblies by section
Every catalogued assembly group for the Komatsu D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)). 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-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Air Cleaner Connection(#53731-)
| 07***09 | Clamp,(See Fig. K0210-16a0) | 2 |
| 10***60 | Boot | 1 |
| 10***70 | Pipe | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Battery
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***18 | Bolt | 2 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 6 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Electrical System
| 01***12 | Bolt (M8-1.25x12) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 12 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Engine Mounting Parts(#45003-53730)
| 01***10 | Bolt | 4 |
| 10***20 | Cushion,Rear | 8 |
| 11***20 | Washer | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Engine Mounting Parts(#53731-)
| 01***10 | Bolt | 4 |
| 10***20 | Cushion,Rear | 4 |
| 10***30 | Cushion,Front | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Fuel Control Lever
| 01***20 | Bolt,(Large Capacity Type) (Std) | 10 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***16 | Screw | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Fuel Tank And Piping
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
| 07***20 | Cap Ass'Y | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Fuel Tank? Additional Strainer And Piping(#51714-)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 3 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Fuel Tank? Additional Strainer Piping(#45003-51713)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 3 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Instrument Panel(#45003-53999)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Instrument Panel(#54000-)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Oil Cooler And Piping
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Radiator And Piping(#45003-53730)
| 01***12 | Bolt (M8-1.25x12) | 3 |
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Engine Related Parts And Electrical System : Radiator And Piping(#53731-)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
Guard
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Cross Bar
| 01***40 | Bolt,(Not Used With Cab) | 8 |
| 01***45 | Bolt,(For Slag Handling) | 16 |
| 01***45 | Bolt, Fuel Tank Mounting - Front Right | 8 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Engine Bottom Guard
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***30 | Bolt,(For Center Guard) | 14 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Hitch
| 01***40 | Bolt | 2 |
| 01***45 | Washer,(Without R.O.P.S.) | 2 |
| 10***12 | Drawbar | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Loader Frame And Floor Plate(#45003-50000)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***35 | Bolt,(For Pedal Steering) | 10 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Loader Frame And Floor Plate(#50001-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***35 | Bolt,(For Pedal Steering) | 10 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Mark And Plate (Except Japan) (For English)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Mark And Plate (Except Japan) (For Std Spec.)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Operator'S Seat
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 15 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Operator'S Seat (Op)
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 8 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 15 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Radiator Guard And Hood(#45003-53730)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 15 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Radiator Guard And Hood(#53731-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 11 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Guard : Rear Cover And Hydraulic Tank
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 25 |
Main Clutch? Damper And Transmission
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Counter Shaft And Gear
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Gear Shift Lever And Fork
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***12 | Screw,(With Articulate Indicator) | 4 |
| 01***20 | Screw,Set | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Inertia Brake
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 5 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Intermediate Shaft And Gear
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Main Clutch Case
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Main Clutch Pedal
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Main Clutch Plate
| 01***10 | Bolt, Mount Flasher | 6 |
| 01***16 | Bolt (Welded) | 6 |
| 01***16 | Bolt,(For Slag Handling) | 6 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Main Clutch Pump
| 04***15 | Ring, Snap | 1 |
| 07***01 | Pump Ass'Y (Fal10) | 1 |
| 07***60 | Seal,Oil | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Main Clutch Pump Drive And Relife Valve
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***70 | Bolt, Spacer | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 8 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Main Clutch Yoke
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Main Shaft And Gear
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***10 | Nut | 1 |
| 01***10 | Nut | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Transmission Case
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Main Clutch? Damper And Transmission : Universal Joint
| 01***40 | Bolt,(For Position Fixing) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 8 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 1 |
Optional Parts
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Optional Parts : Back-Up Alarm
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***20 | Screw | 4 |
| 01***05 | Nut (Welded) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Optional Parts : Brake Pedal And Linkage (For Lever Steering)(#45003-50000)
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Optional Parts : Canopy
| 01***25 | Bolt - Rear Guard Mounting | 8 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Optional Parts : Head Guard
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***40 | Bolt,(Not Used With Cab) | 18 |
| 01***75 | Bolt,Dust | 24 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Optional Parts : Rops Canopy
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***40 | Bolt,(Not Used With Cab) | 26 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 8 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Optional Parts : Steering Lever And Linkage (For Lever Steering)(#45003-50000)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***06 | Nut? L.H. Thread,R.H. Thread | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Optional Parts : Steering Pedal And Linkage (For Pedal Steering)(#50001-52080)
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Optional Parts : Steering Pedal And Linkage (For Pedal Steering)(#52081-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
Steering System And Final Drive
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Bevel Gear And Shaft
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 6 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Brake Band
| 01***35 | Bolt,(For Pedal Steering) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 8 |
| 01***23 | Plain Washer | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Brake Pedal And Linkage (For Lever Steering)(#50001-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Final Drive Gear
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Final Drive Housing
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 16 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 26 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 16 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Parking Brake Lever
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Sprocket And Shaft
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***11 | Nut (M14-1.50 Thd), Nut; Was 01582-01411 | 24 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 8 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Case And Main Frame
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Case Cover
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 20 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Clutch
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 16 |
| 01***90 | Bolt (M10-1.50x90) | 8 |
| 01***10 | Nut,(For Slag Handling) | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Lever And Linkage (For Lever Steering)(#50001-52080)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***06 | Nut? L.H. Thread,R.H. Thread | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Lever And Linkage (For Lever Steering)(#52081-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
| 01***06 | Nut? L.H. Thread,R.H. Thread | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Oil Piping(#52081-)
| 01***16 | Bolt,(For Slag Handling) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Pedal And Linkage (For Pedal Steering)(#45003-50000)
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Valve (For Pedal Steering)(#52081-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 8 |
| 04***16 | Pin, Spring | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Valve And Piping(#45003-52080)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Steering System And Final Drive : Steering Valve(#52081-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 8 |
| 04***16 | Pin, Spring | 2 |
Tool And Kit
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Tool And Kit : Tool
| 07***00 | Pump,Grease | 1 |
| 07***00 | Pump,Grease | 1 |
| 07***00 | Cartridge,Grease | 1 |
Track
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Track : Carrier Roller
| 01***25 | Bolt,(Without Auto Priming System) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Track : Front Idler
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
| 01***08 | Nut,R.H. Thread | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Track : Recoil Spring
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
| 01***35 | Bolt,(For Pedal Steering) | 20 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Track : Track Frame(#45003-45994)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 16 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***25 | Bolt,(For Slag Handling) | 36 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Track : Track Frame(#45995-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***25 | Bolt,(For Slag Handling) | 36 |
| 01***35 | Bolt,(For Pedal Steering) | 16 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Track : 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-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Track : Track Shoe
| 01***18 | Nut? Shoe (Kit) | 296 |
| 10***01 | Shoe Bolt And Nut K.,(Except Swamp) | 1 |
| 10***20 | Link,Track? L.H | 74 |
Work Equipment
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment : Angle Tilt Blade
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt - Rear Guard Mounting | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment : Angle Tilt Frame(#45003-53988)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***60 | Bolt (M20-2.50x60) | 6 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment : Angle Tilt Frame(#53989-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***60 | Bolt (M20-2.50x60) | 6 |
Work Equipment Control System
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Blade Angle Cylinder
| 04***20 | Ring, Retaining | 1 |
| 04***20 | Ring, Snap | 4 |
| 07***75 | O-Ring,Cylinder Head | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Blade Lift Cylinder
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
| 04***20 | Ring, Retaining | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Blade Tilt Cylinder
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
| 04***20 | Ring, Retaining | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Control Lever
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***16 | Screw | 5 |
| 01***03 | Nut? L.H. Thread,L.H. Thread | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Control Valve (1/2)
| 01***16 | Bolt (Op) | 8 |
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 01***30 | Bolt | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Control Valve (2/2)
| 04***93 | Ball,Steel | 1 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 3 |
| 07***34 | O-Ring, O-Ring,Drain Plug? R.H. Half Tank | 3 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Oil Piping (Pump - Valve)
| 01***45 | Bolt,(S6d155-4b) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Oil Piping (Valve - Angle Cylinder)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 14 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 9 |
| 01***30 | Bolt,(For France Noise Suppression) | 5 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Oil Piping (Valve - Lift Cylinder)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Oil Piping (Valve - Tilt Cylinder)(#45003-50000)
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Oil Piping (Valve - Tilt Cylinder)(#50001-)
| 01***35 | Bolt,(Without Auto Priming System) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Oil Pump(#45003-50000)
| 04***15 | Ring, Snap | 1 |
| 70***00 | Pump Ass'Y,(See Fig. 3601a) | 1 |
| 70***50 | Bracket | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Oil Pump(#50001-)
| 04***15 | Ring, Snap | 1 |
| 70***10 | Seal, Oil | 1 |
| 70***10 | Pump Ass'Y,(See Fig. 3601) | 1 |
Komatsu : D20p-5a(S/N 45003-Up (Power Angle Tilt Dozer)) : Work Equipment Control System : Hydraulic Tank And Filter
| 01***16 | Bolt,(For Slag Handling) | 7 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 3 |
D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) serial number reference
The PIN plate is located on the front frame casting, typically on the operator's left side near the radiator support. To read the prefix, identify the first three characters (the model family code) at the start of the serial number string.
| Prefix | Identifies | Notes |
|---|---|---|
| D20 | D20P-5A (Power Angle Tilt Dozer) | Identifies the crawler dozer family. The numeric portion indicates the machine size and weight class. |
Frequently asked questions
What engine powers the Komatsu D20P-5A?
The machine is equipped with a 4-cylinder 4D92-2N diesel engine, providing 39 hp (29.1 kW) at 2450 rpm.
What is the operating weight of this model?
The approximate operating weight for the D20P-5A is 8620.1 lb (3910 kg).
What machine replaced the D20 series?
The D20P-7A represents a later generation within the lineage.
What D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) owners discuss
What are the common engine performance issues reported for the D20P-5A?
Reported issues include high RPM, engine misfiring, and excessive smoke production.
How can a steering issue be identified in the D20P-5A transmission/clutch system?
A failure mode where the left track remains engaged and fails to move forward often indicates a steering clutch issue.
What are the suspected causes for an engine electrical shutdown on this model?
Electrical engine shutdowns are often attributed to issues with the servo motor or the wiring harness.
What is the primary concern regarding maintenance and long-term ownership of older Komatsu D20 series units?
The availability and cost of replacement parts are significant considerations for owners of older equipment.
Which engine model is used in the D20P-5A (S/N 45003-UP)?
The machine utilizes a 4D92-2N diesel engine, featuring 4 cylinders and producing 39 hp (29.1 kW) at 2450 rpm.
What should be checked when inspecting a used D20P-5A for potential theft or fraud?
Verify that the serial number on the riveted chassis plate matches the number engraved directly into the frame casting. A mismatch is a primary indicator of stolen equipment.
What procedure is used to access the steering clutch for replacement?
The process involves removing the seat and linkages, then unbolting the top housing; final drive removal is not required. Verify specific procedures with your dealer.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific D20P-5A(S/N 45003-UP (Power Angle Tilt Dozer)) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.