Komatsubulldozersmall ( - d39)
Komatsu D37PX-21A(S/N 5501-UP (Overseas Version))
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D37PX-21A (S/N 5501-UP Overseas Version) is a compact crawler dozer engineered for versatile earthmoving, grading, and utility applications. This machine belongs to the D37 series and is powered by the Komatsu SAA4D102E-2 turbocharged and air-to-air aftercooled diesel engine, delivering 85 HP (63.4 kW). The PX configuration features a wide-track setup for low ground pressure, making it suitable for soft terrain operations.
This generation represents a refined iteration within the Komatsu crawler lineup, focusing on optimized hydraulics and improved operator visibility through its super-slant nose design. In today's used parts market, this machine is valued for its balance of maneuverability and durability. Maintenance of the dual-path hydrostatic transmission and the SAA4D102E-2 engine remains critical for ensuring operational reliability across various regional emissions configurations.
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 D37PX-21A(S/N 5501-UP (Overseas Version)) specifications
Engine
| Engine Model | Komatsu SAA4D10LE-2 |
| Net Power | 85 hp (63.4 kW) |
| Displacement | 240 cu in (3932.9 cc) |
| Number of Cylinders | 4 |
| Aspiration | Turbocharged and air-to-air aftercooled |
Weights
| Operating Weight | 13,910 lb (6,309.5 kg) to 16,976 lb (7.7 t) |
Dimensions
| Transport Length | 13.1 ft (4 m) |
| Transport Width | 10.66 ft (3.25 m) to 10.7 ft (3.25 m) |
| Transport Height | 8.83 ft (2.7 m) to 8.86 ft (2.7 m) |
| Width Over Tracks | 7.42 ft (228.6 cm) to 90 in (228.6 cm) |
| Ground Clearance | 1.25 ft (39.6 cm) to 15.6 in (39.6 cm) |
| Track Gauge | 5.42 ft (167.6 cm) to 66 in (167.6 cm) |
| Length of Track on Ground | 7.33 ft (225.6 cm) to 88.8 in (225.6 cm) |
| Track Width | 23.6 in (600 mm) |
Performance
| Max Speed Forward | 5.3 mph (8.5 km/h) |
| Max Speed Reverse | 5.3 mph (8.5 km/h) |
| Transmission Type | Dual-path, hydrostatic transmission |
| Number of Forward Gears | 3 |
| Number of Reverse Gears | 3 |
| Ground Pressure | 4.12 psi (0.3 bar) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D37PX-21A(S/N 5501-UP (Overseas Version)) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (w/ filter) | 12.5 L (3.3 gal) | Verify with dealer per factory literature; engine is SAA4D102E-2 turbocharged/aftercooled model for this serial range. |
| Cooling system | 26.9 L - 27 L (7.1 gal) | Verify with dealer per factory literature. |
| Fuel tank | 165 L (43.6 gal) | Verify with dealer per factory literature. |
| Transmission/powertrain (dual-path hydrostatic) | Not specified | Verify with dealer per factory literature. |
| Bevel gear/steering compartments | Not specified | Verify with dealer per factory literature. |
| Final drives (each) | 3.4 L - 3.5 L (0.9 gal) | Verify with dealer per factory literature. |
| Hydraulic system/tank | 46.9 L - 47 L (12.4 gal) | Verify with dealer per factory literature. |
| Grease | Not specified | Verify with dealer per factory literature; lubrication of all grease points required every 250 hours service. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu D37PX-21A(S/N 5501-UP (Overseas Version)) 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 D37PX-21A(S/N 5501-UP (Overseas Version)) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Komatsu Oil Wear Analysis (KOWA) to monitor engine and hydraulic health. Regularly check the 3.3 gal (12.5 L) engine oil capacity and 12.4 gal (46.9 L) hydraulic system for contaminants. Monitor the 7.1 gal (26.9 L) cooling system for degradation. Proactive analysis of these fluids prevents failures in the SAA4D102E-2 and hydrostatic transmission components, extending the service life of the powertrain.
Corrective & Common Repairs
Address frequent issues such as hydraulic control valve malfunctions or transmission pump failures if movement becomes erratic. Inspect for track creep or engagement issues by checking the brake and hydraulic pressure. If the engine fails to start, verify battery voltage and terminal connections. For undercarriage maintenance, regularly inspect track shoe bolts and adjust tension to prevent premature wear on rollers and idlers.
Overhaul & Rebuild Points
Major service milestones include the 2000-hour hydraulic oil change and filter replacement. During engine overhauls, focus on inspecting the turbocharger rotor play and adjusting valve clearances. For the undercarriage, monitor the wear of track shoes and rollers. Rebuilding the hydrostatic transmission requires precise inspection of the dual-path components to restore original torque and speed specifications.
Seasonal & Environment Servicing
In cold climates, utilize the electrical intake air heater and follow specific cold-weather starting procedures. During high-dust operations, prioritize cleaning the air cleaner element and radiator fins to prevent overheating. For long-term storage, ensure the machine is cleaned, the fuel tank is stabilized, and all critical components are protected from moisture to prevent corrosion of the chassis and hydraulic cylinders.
D37PX-21A(S/N 5501-UP (Overseas Version)) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 09637-30163 | Plate? Instruction,Air Cleaner (Single Element) | Air intake service | Check fitment → |
| 09637-81163 | Plate? Instruction,Air Cleaner Element Mainte | Air intake service | Check fitment → |
| 14X-911-7741 | Filter,Air | Air intake service | Check fitment → |
| 17M-911-3530 | Element,Air | Air intake service | Check fitment → |
| 113-60-43321 | Cartridge,Hydraulic Oil Filter (D31s) | Hydraulic service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D37PX-21A(S/N 5501-UP (Overseas Version)) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E10 | Engine controller power malfunction | ECM power connection failure, blown fuses, or faulty ground wires | Inspect ECM power connections, fuses, and ground wires |
| E11 | Engine protection—output power reduced | High coolant temperature, low oil pressure, or restricted air filter | Check coolant temperature, engine oil pressure, and air filter condition |
| CA115 | Engine crankshaft speed sensor failure | Broken sensor, wiring harness damage, or connector corrosion | Replace the speed sensor and verify voltage at the pin connector |
| CA234 | Engine overspeed | Improper throttle calibration, excessive engine load, or operator misuse | Verify throttle calibration and evaluate engine load cycle |
| CA451 / CA452 | Common rail pressure error | Malfunctioning fuel rail pressure sensor or issues in the pump lines | Diagnose the fuel rail pressure sensor and inspect pump lines |
| CA553 / CA559 | Fuel pressure high/low | Malfunction in the fuel pump regulator (IMV/PCV) | Evaluate the fuel pump regulator (IMV/PCV) functionality |
| DW43KA / DW43KB | Travel speed solenoid open/short circuit | Electrical short or open circuit in the travel speed control solenoid | Replace the solenoid valve |
| DXA8KA / DXA8KB | Front pump EPC solenoid valve circuit fault | Wire chafing or electrical short in the solenoid circuit | Inspect the wiring harness for chafing or shorts |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D37PX-21A(S/N 5501-UP (Overseas Version)) attachments & work tools
Blades
Standard blade width is 3250 mm (10.7 ft) with a cutting depth of 380 mm (15 in). Available configurations include PAT, U-blades, and angle blades.
Rippers
Ripper attachments are available for this model; specific single-shank or multi-shank weight specifications are not documented for this exact serial range.
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
The machine features a cab with silicon oil filled damper mounts to isolate the operator compartment; specific forestry or waste guarding configurations are not documented.
Hydraulic arrangement notes
The system utilizes a dual-path hydrostatic transmission and has a relief valve pressure 2990 psi (20615.4 kPa). The engine used is the Komatsu SAA4D102E-2.
All D37PX-21A(S/N 5501-UP (Overseas Version)) assemblies by section
Every catalogued assembly group for the Komatsu D37PX-21A(S/N 5501-UP (Overseas Version)). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Accessory
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Accessory : Cap And Overall
| 09***50 | Overall,(Special Order) | 1 |
| 09***57 | Cap,(Special Order) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Accessory : Spare Parts
| 09***00 | Box,Spare Parts (Except Usa) | 1 |
| 11***21 | Cartridge,Hydraulic Oil Filter (D31s) | 1 |
| 71***11 | Element, Transmission Oil Filter | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Accessory : Tool
| 07***50 | Pump, (Bellows Type) | 1 |
| 07***03 | Cartridge - Grease | 1 |
| 07***17 | Nozzle | 1 |
Cooling System
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Cooling System : Cooling (Cover)
| 01***20 | Bolt,(For Mono Lever Steering) | 15 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 17 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Cooling System : Cooling (Mount)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 3 |
| 01***40 | Bolt (Op) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Cooling System : Cooling (Piping)
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Cooling System : Cooling (Radiator And Oil Cooler)
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
| 01***30 | Bolt,(With Body Positioner) | 7 |
| 01***00 | Bolt,(For Front Brake Release) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Cooling System : Reserve Tank
| 01***25 | Bolt,(Rear Attachment Less) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Electrical System
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Back-Up Alarm
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***00 | Bolt,(For Front Brake Release) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Back-Up Buzzer
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 11***50 | Buzzer | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Battery
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Battery (Large Capacity Type)
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 08***00 | Terminal? (+),(10l) (Not Shown) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Battery Wiring
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Electrical System (Engine Wiring)
| 01***12 | Bolt - Front Cover Mounting | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***30 | Bolt - M8 X 30lg | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Electrical System (Engine Wiring) (For Corrosion Resistor)
| 01***12 | Bolt - Front Cover Mounting | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Electrical System (Engine Wiring)(#5686-)
| 01***12 | Bolt - Front Cover Mounting | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Electrical System (Horn And Floor Wiring Clip)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 8 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Electrical System (Vehicle Wiring)(#5501-5774)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 10 |
| 01***20 | Bolt,(For Mono Lever Steering) | 23 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Electrical System (Vehicle Wiring)(#5775-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 10 |
| 01***20 | Bolt,(For Mono Lever Steering) | 24 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Komtrax Harness (Controller) (For Except Japan)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 7 |
| 04***08 | Clip | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Komtrax Harness (Wiring Harness) (For Except Japan)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 04***10 | Clip,(With Accumulator) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Electrical System : Vehicel Lamp
| 11***72 | Lamp | 3 |
| 42***30 | Bulb? 70w,24v 70w | 2 |
Engine Related Parts
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : After Cooler (Air To Air)
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 1 |
| 01***65 | Bolt,(Used With Pin Puller) | 3 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Air Cleaner
| 01***16 | Bolt - Box Mounting | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***23 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Air Cleaner (With Pre-Cleaner)
| 01***16 | Bolt - Box Mounting | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***23 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Air Conditioner (Compressor)
| 01***25 | Bolt,(Rear Attachment Less) | 1 |
| 01***90 | Bolt,With Cover | 3 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 9 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Corrosion Resistor
| 01***35 | Bolt,(F4320-52a0 -5 ) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Damper
| 01***30 | Bolt,(With Body Positioner) | 12 |
| 01***32 | Washer,(With Auto Emergency Steering) | 12 |
| 07***11 | Plug,(For Shipping) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Engine Mounting Parts
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Engine Related Parts (Except Japan)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***30 | Bolt,(With Body Positioner) | 8 |
| 01***65 | Bolt - Return Line And Suction Linehose Clamps | 3 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Fuel Lift Pump
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 08***19 | Band - Tie Hose To Wire Harness | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Heater (Piping)
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
| 04***11 | Clamp, Vinyl | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Heater (Plug)
| 10***20 | Hose | 1 |
| 11***40 | Plug | 1 |
| 11***60 | Clip | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Heater Switch
| 60***70 | Switch,Air Intake Heater | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Muffler
| 01***25 | Bolt | 4 |
| 01***12 | Bolt,(With Speedometer) | 1 |
| 01***16 | Bolt, Mount Solenoid Valve | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Pre-Cleaner
| 60***30 | Body | 1 |
| 60***30 | Pre-Cleaner Ass'Y | 1 |
| 61***90 | Trap,Dust | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Engine Related Parts : Spare Parts
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 2 |
| 67***11 | Gasket,Air Intake Heater | 1 |
| 67***81 | Gasket, Valve Cover | 4 |
Fuel Tank And Related Parts
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Fuel Tank And Related Parts : Fuel Line
| 01***20 | Bolt,(For Mono Lever Steering) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 9 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Fuel Tank And Related Parts : Fuel Line (With Fuel Pump)
| 01***30 | Screw | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Fuel Tank And Related Parts : Fuel Tank
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***12 | Screw | 5 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Fuel Tank And Related Parts : Water Separator
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***45 | Bolt,(For 60ton Dump Body) | 4 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Fuel Tank And Related Parts : Water Separator (With Fuel Pump)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***45 | Bolt,(For 60ton Dump Body) | 4 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 4 |
Guard
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Engine Hood
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***45 | Bolt, Mounting Cranking Motor | 4 |
| 01***20 | Bolt,Sems | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Engine Hood (With Precleaner)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***45 | Bolt, Mounting Cranking Motor | 4 |
| 01***20 | Bolt,Sems | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Engine Side Cover (Lower)
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Engine Side Cover (Upper)
| 01***45 | Bolt,(With Water Separator Type) | 16 |
| 01***12 | Washer,(With Body Positioner) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 16 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Engine Side Cover (Upper) (For Eu)
| 01***45 | Bolt,(With Water Separator Type) | 16 |
| 01***12 | Washer,(With Body Positioner) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 16 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Floor Cover
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***16 | Bolt | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Floor Cover (For Air Condtioner)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 11***60 | Plate | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Floor Cover (For Air Condtioner) (For Air Suspension Seat)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 11***70 | Plate | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Front Hook
| 01***40 | Bolt,(For Slag Handling) (For Usa) | 6 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 6 |
| 11***10 | Hook | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Radiator Guard (Grid Mask) (For Rops Sweep)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
| 01***35 | Bolt,(With Rops) | 10 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Radiator Mask (For Rops Sweep)
| 01***55 | Bolt,(Not Used For Chip Dozer) | 4 |
| 01***25 | Bolt,(Without Gps Antenna Bracket) | 4 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Rear Cover
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 12 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Rear Cover (For Air Condtioner)
| 01***16 | Bolt - Box Mounting | 4 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 7 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Rear Guard (Battery Cover)
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***16 | Bolt - Box Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Rear Guard (Fender)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 3 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 5 |
| 01***40 | Bolt,(For Slag Handling) (For Usa) | 24 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Rear Guard (Front Bracket)
| 01***70 | Bolt,(With Wear Guard) | 8 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 8 |
| 04***24 | Pin,Spring | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Rops Mount
| 01***40 | Bolt,(For Slag Handling) (For Usa) | 24 |
| 01***45 | Bolt,(For L=529mm Pin) | 4 |
| 01***19 | Nut - M24 | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Guard : Under Guard
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 10 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 5 |
Hydraulic System
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Angle Cylinder Line
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***40 | Bolt (Op) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Angle Cylinder Line (Bracket)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 6 |
| 01***20 | Bolt,(For Mono Lever Steering) | 16 |
| 01***07 | Nut,(With Body Positioner) | 12 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Dozer Oil Line (For Pat)
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Drain Line
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
| 02***14 | Elbow | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Hudraulic Pump (Harness Bracket)
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Hydraulic Pump
| 01***40 | Screw, Hex Socket | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 8 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Hydraulic Pump Line (Delivery)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***65 | Bolt - Return Line And Suction Linehose Clamps | 2 |
| 01***09 | Nut,(For Japan) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Hydraulic Pump Line (Suction)
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 1 |
| 01***09 | Nut,(For Japan) | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Hydraulic Tank
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***45 | Bolt,(With Water Separator Type) | 4 |
| 01***16 | Screw | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Hydraulic Tank (For Ripper)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***45 | Bolt,(With Water Separator Type) | 4 |
| 01***16 | Screw | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Hydraulic Tank (Mount And Filter)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***40 | Bolt,(For Slag Handling) (For Usa) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Lift Cylinder Line (Hose)
| 01***20 | Bolt,(For Mono Lever Steering) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***70 | Bolt - Bracket And Oil Inlet Tubemounting | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Main Valve (Mount And Elbow)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***65 | Bolt,(Used With Pin Puller) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Main Valve (Mount And Elbow) (For Rear Attachment)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***65 | Bolt,(Used With Pin Puller) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Oil Cooler Line
| 01***20 | Bolt,(For Mono Lever Steering) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Ppc Line (Charge Filter)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Ppc Line (Elbow)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 02***10 | Elbow | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Ppc Line (Hose)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 13 |
| 01***32 | Washer,(With Auto Emergency Steering) | 15 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Ppc Line (Solenoid Valve)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
| 01***90 | Capscrew | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Ppc Line (Toe Valve)
| 01***09 | Nut,(For Japan) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 04***16 | Pin (Itl) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Ppc Line (Valve)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 02***08 | O-Ring (Kit) | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Tilt Cylinder Line
| 02***08 | O-Ring (Kit) | 2 |
| 02***09 | O-Ring,(F4350-61a0 -41 ) | 2 |
| 11***10 | Tube,R.H | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Hydraulic System : Travel Line
| 01***20 | Bolt,(For Mono Lever Steering) | 6 |
| 01***75 | Bolt (M10-1.50x75) | 4 |
| 01***85 | Bolt, Divider Valve Mounting | 4 |
Main Frame And Related Parts
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Main Frame And Related Parts : Main Frame
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Marks And Plates
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Accumulator Plates
| 09***7B | Plate? Safety,Acc. (Except The Americas) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Center Of Gravity Mark
| 09***11 | Mark Plate,Hanging Point Mark | 2 |
| 09***01 | Mark,Location Of Center Of Gravity | 4 |
| 09***02 | Mark,Lift Point Mark | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Mark (Galeo) (Canopy)
| 09***30 | Plate? Mark,Mark? Galeo | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Mark And Plates (Turkish)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***81 | Plate? Safety,Warning Before Ope.And Mainte | 1 |
| 09***81 | Plate? Safety,Hot Oil Hazard? Hydraulic. Tank Cap | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Marks And Plates (English)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***63 | Plate? Instruction,Air Cleaner (Single Element) | 1 |
| 09***81 | Plate? Safety,Warning Before Ope.And Mainte | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Marks And Plates (English) (For Eu)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***63 | Plate? Instruction,Air Cleaner (Single Element) | 1 |
| 09***81 | Plate? Safety,Warning Before Ope.And Mainte | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Marks And Plates (English) (For U.S.A)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***63 | Plate? Instruction,Air Cleaner (Single Element) | 1 |
| 09***01 | Plate? Safety,Warning Before Ope.And Mainte | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Marks And Plates (German) (For Eu)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***63 | Plate? Instruction,Air Cleaner Element Mainte | 1 |
| 09***81 | Plate? Safety,Warning Before Ope.And Mainte | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Marks And Plates (Portugal) (For Eu)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***63 | Plate? Instruction,Air Cleaner Instruction | 1 |
| 09***81 | Plate? Safety,Warning Before Ope.And Mainte | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Rops Plates (English)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| (****0) | Plate,(Limited Supply) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Rops Plates (English) (For U.S.A.)
| 04***08 | Rivet | 4 |
| (****0) | Plate,(Limited Supply) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Rops Plates (German)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate,(Rops And Fops) | 1 |
| 09***80 | Plate,Rops/Fops | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Rops Plates (Portugal)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| (****0) | Plate,(Limited Supply) | 1 |
| (****0) | Plate,(Limited Supply) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Marks And Plates : Rops Plates (Turkish)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 11***50 | Plate,Rops | 1 |
| (****0) | Plate,(Limited Supply) | 1 |
Miscellaneous
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Miscellaneous : Vandalism Protection
| 09***00 | Lock,(With Vandalism Protection) | 1 |
Operator'S Compartment And Control System
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Air Hose)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Capacitor)
| 11***31 | Capacitor | 1 |
| 20***50 | Resistor, Blower | 1 |
| 41***80 | Bolt,Washer | 5 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Compressor)
| 09***07 | Hose,Defroster | 1 |
| 11***12 | Air Conditioner Unit | 2 |
| 11***10 | Cover,Dust | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Condenser)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 12 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Cooling)
| 19***40 | Clamp | 1 |
| 20***00 | Packing | 1 |
| ND***61 | Screw,Tapping | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Duct)
| 01***16 | Bolt - Box Mounting | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***20 | Screw | 5 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Filter)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***20 | Bolt,(Without Air Con.) | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Heater) (1/4)
| 11***00 | Heater Ass'Y | 1 |
| TW***20 | Heater Core | 1 |
| TW***80 | Case | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Heater) (2/4)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 08***10 | Bracket, Bucket Position Sensor | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Heater) (3/4)
| 11***00 | Heater Ass'Y | 1 |
| TW***70 | Filter | 1 |
| TW***03 | Seal | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Heater) (4/4)
| 11***00 | Heater Ass'Y | 1 |
| TW***10 | Duct | 1 |
| TW***01 | Seal | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Unit)(#5501-5598)
| 01***12 | Bolt - Front Cover Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***35 | Bolt | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Air Conditioner (Unit)(#5599-)
| 01***12 | Bolt - Front Cover Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 10 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Arm Rest(#5501-5673)
| 01***32 | Plain Washer | 4 |
| 07***30 | Bolt,(For Tree Pusher) | 4 |
| 11***12 | Arm Rest,L.H | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Arm Rest(#5674-)
| 01***16 | Screw | 10 |
| 01***32 | Plain Washer | 4 |
| 07***30 | Bolt,(For Tree Pusher) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Center Floor (Brake Pedal 1/2)
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
| 01***45 | Bolt, Mounting Cranking Motor | 1 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Center Floor (Brake Pedal 2/2)
| 01***16 | Bolt - Box Mounting | 2 |
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Center Floor (Cover Mount)
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 12 |
| 01***30 | Bolt, Mounting - Front Hand Rails | 12 |
| 11***61 | Cover | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Center Floor (Deccel Cable)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 01***10 | Washer,(For 35a Alternator) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Center Floor (Deccel Cable) (For Cab)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***30 | Bolt, Mounting - Front Hand Rails | 8 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Center Floor (Deccel Pedal)
| 01***16 | Bolt - Box Mounting | 2 |
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 01***30 | Bolt - M8 X 30lg | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Cup Holder (With Cab)
| 01***25 | Screw | 2 |
| 01***23 | Washer,(Without Air Con.) | 2 |
| 11***90 | Bracket | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Cup Holder (Without Cab)
| 01***20 | Screw | 2 |
| 01***30 | Screw | 2 |
| 01***23 | Washer,(Without Air Con.) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Fire Extinguisher (English) (With Cab)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 6 |
| 01***25 | Screw | 4 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Fire Extinguisher (English) (Without Cab)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 4 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Accumulator)
| 01***35 | Bolt,(For Fix Position) | 4 |
| 01***50 | Bolt,(Spark Arrester Spec.) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Blade Control)
| 01***10 | Bolt | 3 |
| 01***16 | Washer,(With Water Separator) | 1 |
| 07***30 | Bolt,(For Tree Pusher) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Blade Lock Lever)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(Rear Attachment Less) | 7 |
| 01***30 | Bolt - M8 X 30lg | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Blade Lock Lever) (For Eu)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(Rear Attachment Less) | 3 |
| 01***30 | Bolt - M8 X 30lg | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Cover And Cap) (For Canopy)
| 01***16 | Bolt | 5 |
| 01***30 | Bolt | 2 |
| 01***20 | Bolt | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Cover)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***20 | Screw | 16 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Cover) (For Cab)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***06 | Screw | 2 |
| 01***16 | Washer,(For 35a Alternator) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Cover) (For Canopy)
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
| 01***08 | Nut, Accumulator Mounting | 1 |
| 01***23 | Washer, Flat | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Cover) (For Rear Attachment) : Unit_01_of_02
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***20 | Screw | 12 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Cover) (For Rear Attachment) : Unit_02_of_02
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Screw | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Electrical Lever)
| 01***20 | Bolt,See Fig. K4010-65a0 | 3 |
| 01***10 | Bolt | 3 |
| 08***14 | Band | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Floor Frame And Fuel Control 1/2)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***25 | Bolt,(Rear Attachment Less) | 1 |
| 01***30 | Bolt - M8 X 30lg | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Fuel Control 2/2)
| 01***16 | Bolt - Box Mounting | 2 |
| 01***18 | Bolt | 2 |
| 01***30 | Bolt - M8 X 30lg | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Horn Switch)
| 13***00 | Switch Ass'Y | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Mount)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Bolt,(With Gps Antenna Bracket) | 12 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Mount) (For Cab And Rear Attachment)
| 01***85 | Bolt,(Used With Pin Puller) | 11 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 11 |
| 09***12 | Cap,(With Auto Emergency Steering) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Mount) (For Cab)
| 01***85 | Bolt,(Used With Pin Puller) | 11 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 11 |
| 09***12 | Cap,(With Auto Emergency Steering) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Mount) (For Canopy And Rear Attachment)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***30 | Bolt,(With Gps Antenna Bracket) | 12 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (P.P.C Drain)
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 02***09 | O-Ring,(F4350-61a0 -41 ) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (P.P.C Valve)
| 01***25 | Bolt,(Rear Attachment Less) | 8 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 8 |
| 11***41 | Plate | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Plug) (For Cab)
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Seat Wiring)
| 04***10 | Clip,(With Accumulator) | 5 |
| 04***10 | Clip | 1 |
| 11***21 | Wiring Harness | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Steering Electrical)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***55 | Bolt,(See Service News) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Steering Lock Lever)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 6 |
| 01***35 | Bolt,(For Fix Position) | 2 |
| 01***25 | Bolt | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Wiring)
| 01***85 | Bolt - M8 X 85lg | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 23 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Work P.P.C Piping)
| 01***20 | Bolt,(For Mono Lever Steering) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 02***10 | Hose? 1000mm,Yellow | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Work P.P.C Piping) (For Eu)
| 01***20 | Bolt,(For Mono Lever Steering) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 02***10 | Hose? 1000mm,Yellow | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Frame (Work P.P.C Piping) (For Rear Attachment)
| 01***20 | Bolt,(For Mono Lever Steering) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 02***10 | Hose? 1000mm,Yellow | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Mat (With Cab)
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Floor Mat (Without Cab)
| 11***12 | Floor Mat | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Foot Rest
| 01***20 | Bolt | 4 |
| 01***32 | Washer,(Without Gps Antenna Bracket) | 4 |
| 09***12 | Cap,(With Auto Emergency Steering) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Fuel Control (1/2)
| 01***25 | Bolt,(Rear Attachment Less) | 1 |
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***30 | Bolt,Stopper | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Fuel Control (2/2)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***45 | Bolt,(With Water Separator Type) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Heater
| 01***20 | Bolt,(For Mono Lever Steering) | 8 |
| 01***20 | Bolt,(Without Air Con.) | 6 |
| 01***20 | Screw | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Lunch Box Bracket (With Cab)
| 01***25 | Screw | 4 |
| 01***23 | Washer,(Without Air Con.) | 4 |
| 11***40 | Bracket | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Lunch Box Bracket (Without Cab)
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
| 01***20 | Screw | 2 |
| 01***30 | Screw | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Operator'S Seat (Fabric Seat) (Air Suspension Type)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Operator'S Seat (Reclining Type) (Fabric Seat)
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***20 | Bolt | 4 |
| 01***16 | Washer,(For 35a Alternator) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Operator'S Seat (Reclining Type) (Fabric Seat) (With Head Rest)
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***20 | Bolt | 4 |
| 01***16 | Washer,(For 35a Alternator) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Operator'S Seat (Reclining Type) (Leather Seat)
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***20 | Bolt | 4 |
| 01***16 | Washer,(For 35a Alternator) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Operator'S Seat (Reclining Type) (Leather Seat) (With Head Rest)
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***20 | Bolt | 4 |
| 01***16 | Washer,(For 35a Alternator) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Panel (For Cab)
| 01***35 | Bolt | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***20 | Bolt | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Panel (For Cab) (For Eu)
| 01***35 | Bolt | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***20 | Bolt | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Panel (For Canopy)
| 01***35 | Bolt | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Panel (Vandalism Protection)
| 01***35 | Bolt | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rear View Mirror
| 01***20 | Bolt,(Without Air Con.) | 4 |
| 01***23 | Washer,(Without Air Con.) | 4 |
| 11***91 | Bracket | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Air Conditioner Control)
| 01***14 | Screw | 3 |
| 01***16 | Screw | 8 |
| 01***25 | Bolt | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Body) (For Except Japan)
| 01***20 | Screw | 4 |
| 01***16 | Screw | 4 |
| 01***23 | Washer | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Door)
| 01***20 | Screw | 10 |
| 01***16 | Screw | 16 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 24 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Duct)
| 01***12 | Bolt - M8 - 1.25 X 12 | 6 |
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***16 | Screw | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Electrical) (For Eu)
| 01***25 | Bolt,(Without Gps Antenna Bracket) | 6 |
| 01***12 | Screw | 2 |
| 01***14 | Screw | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Electrical) (For U.S.A.)
| 01***25 | Bolt,(Without Gps Antenna Bracket) | 6 |
| 01***12 | Screw | 2 |
| 01***14 | Screw | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Mount)
| 01***85 | Bolt,(Used With Pin Puller) | 11 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 11 |
| 11***12 | Rubber | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Nozzle)
| 01***12 | Screw | 4 |
| 08***07 | Conduit | 1 |
| 08***16 | Conduit | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Open Lock)
| 01***20 | Bolt,Sems | 12 |
| 01***25 | Bolt | 8 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Radio Less) (For U.S.A.)
| 01***14 | Screw | 2 |
| 01***24 | Screw | 8 |
| 01***16 | Screw | 8 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Radio) (For Eu)
| 01***14 | Screw | 2 |
| 01***10 | Screw | 4 |
| 01***24 | Screw | 8 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Radio) (For U.S.A.)
| 01***14 | Screw | 2 |
| 01***10 | Screw | 4 |
| 01***24 | Screw | 8 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Roof Lining)
| 01***12 | Screw | 2 |
| 01***25 | Screw | 4 |
| 01***14 | Bolt - Plate Mounting | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Cab (Washer Tank)
| 01***16 | Bolt - Box Mounting | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***20 | Screw | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Rops Canopy (For Except Japan)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 6 |
| 01***10 | Screw | 4 |
| 01***12 | Screw | 6 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Sash Ass'Y
| 11***02 | Sash Ass'Y,L.H | 1 |
| 11***02 | Sash Ass'Y,R.H | 1 |
| BJ***28 | Seal | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Seat Belt
| 02***44 | Bolt | 2 |
| 09***01 | Bolt,(For Shipping) | 4 |
| 09***02 | Washer,(For Shipping) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Seat Belt (For Air Suspension Seat)
| 01***32 | Washer, (Without Emergency Steering) | 5 |
| 02***32 | Bolt | 2 |
| 09***00 | Safety Belt Assembly | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Side Floor (For Cab)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 6 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 6 |
| 11***84 | Cover,L.H | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Operator'S Compartment And Control System : Side Floor (For Canopy)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 3 |
| 01***30 | Bolt, Mounting - Front Hand Rails | 6 |
Power Train And Final Drive
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Power Train And Final Drive : Final Drive (Carrier)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 12 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 12 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Power Train And Final Drive : Final Drive (Hub)
| 01***50 | Capscrew | 18 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***15 | Bolt | 3 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Power Train And Final Drive : Final Drive (Mount)
| 01***60 | Capscrew | 48 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 48 |
| (1***0) | Final Drive Ass'Y,R.H | 1 |
Service Kit And Component Parts
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Angle Cylinder
| 02***09 | O-Ring,(F4350-61a0 -41 ) | 2 |
| 04***20 | Ring, Snap | 4 |
| 07***70 | O-Ring (Kit) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Compressor
| 20***10 | Air Compressor A. (Kit) | 1 |
| ND***70 | Clamp, Tapping | 1 |
| ND***40 | Compressor Assembly | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Control Valve (3-Spool) (1/6)
| 01***45 | Screw | 4 |
| 01***23 | Washer,(For Shipping) | 8 |
| 07***07 | O-Ring - (K10) | 3 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Control Valve (3-Spool) (2/6)
| 01***40 | Screw | 8 |
| 01***50 | Screw | 2 |
| 07***23 | O-Ring; Was 07002-10823, O-Ring,(Not Shown) | 3 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Control Valve (3-Spool) (3/6)
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 1 |
| 07***23 | O-Ring,(F4350-66a1 -1c ) | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Control Valve (3-Spool) (4/6)
| 07***07 | O-Ring - (K10) | 1 |
| 07***09 | O-Ring,(For Dual Tilt Dozer) | 1 |
| 07***07 | Ring,Back-Up | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Control Valve (3-Spool) (5/6)
| 70***10 | O-Ring (Kit) | 1 |
| 70***20 | Ring, Back-Up | 1 |
| 70***90 | O-Ring,Suction | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Control Valve (3-Spool) (6/6)
| 02***08 | O-Ring (Kit) | 1 |
| 04***15 | Bolt,Eye | 2 |
| 07***24 | O-Ring | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Electric Lever
| 01***12 | Bolt | 4 |
| 08***02 | Conduit,Flexible | 1 |
| 08***12 | Connector | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (1/14)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 07***80 | O-Ring | 1 |
| 07***28 | O-Ring | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (10/14)
| 01***85 | Bolt, Divider Valve Mounting | 4 |
| 01***40 | Bolt | 1 |
| 07***45 | O-Ring | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (11/14)
| 07***34 | O-Ring,(F2370-57a0 -42 ) | 4 |
| 72***90 | Valve Ass'Y,Relief | 4 |
| 72***50 | Spring | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (12/14)
| 01***11 | Nut - Mounting | 1 |
| 07***11 | O-Ring | 1 |
| 07***23 | O-Ring,(F3320-65a0 -34 ) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (13/14)
| 01***75 | Bolt | 4 |
| 07***09 | O-Ring,(For Dual Tilt Dozer) | 1 |
| 07***10 | O-Ring | 10 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (14/14)
| 02***03 | Hose | 1 |
| 02***11 | Elbow | 1 |
| 02***09 | O-Ring,(F2370-57a0 -46 ) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (2/14)
| 04***25 | Ring,Snap | 1 |
| 07***75 | O-Ring | 1 |
| 07***12 | O-Ring | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (3/14)
| (7***4) | Pump Sub Ass'Y | 1 |
| (7***1) | Pump Ass'Y | 1 |
| (****8) | Ring,Snap | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (4/14)
| (****0) | Retainer | 1 |
| (****0) | Retainer | 1 |
| (****1) | Sleeve | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (5/14)
| (****5) | O-Ring | 2 |
| (****0) | Cover | 1 |
| (7***4) | Pump Sub Ass'Y | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (6/14)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 07***80 | O-Ring | 1 |
| 07***28 | O-Ring | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (7/14)
| (****0) | Block Ass'Y,Rear | 1 |
| (7***4) | Pump Sub Ass'Y | 1 |
| (7***1) | Pump Ass'Y | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (8/14)
| (****0) | Retainer | 1 |
| (****0) | Retainer | 1 |
| (****1) | Sleeve | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hst Pump (9/14)
| (****5) | O-Ring | 2 |
| (****0) | Cover | 1 |
| (7***4) | Pump Sub Ass'Y | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Hydraulic Pump
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 4 |
| 04***24 | Pin,Dowel (For No.3 Housing) | 4 |
| 04***18 | Ring, Retaining | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Lift Cylinder
| 02***12 | O-Ring,(F2370-57a0 -49 ) | 2 |
| 07***80 | O-Ring (Kit) | 1 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Ppc Valve (1/4)
| 70***92 | Pilot Valve | 1 |
| 70***40 | Shim - 0.012 In. (0.30 mm) | 2 |
| 70***70 | Gasket | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Ppc Valve (2/4)
| 07***20 | O-Ring,(0202-007) | 1 |
| 70***40 | Shim - 0.012 In. (0.30 mm) | 2 |
| 70***70 | Gasket | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Ppc Valve (3/4)
| 07***20 | O-Ring,(0202-007) | 2 |
| 70***40 | Shim - 0.012 In. (0.30 mm) | 2 |
| 70***70 | Gasket | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Ppc Valve (4/4)
| 01***10 | Bolt | 2 |
| 07***70 | O-Ring (Kit) | 1 |
| 70***80 | O-Ring | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Rubber Antenna
| 19***10 | Rubber Antenna,(See Fig. Y1062-01a0) | 1 |
| EP***03 | Spring Washer | 2 |
| EP***01 | Wing Bolt | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Shoe Bolt And Nut Service Kit
| 11***11 | Bolt? Shoe (Y0320-K1) | 50 |
| 11***12 | Bolt? Shoe (Y0320-K3) | 50 |
| 11***00 | Shoe Bolt And Nut K | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Tilt Cylinder
| 02***08 | O-Ring (Kit) | 2 |
| 04***25 | Ring, Snap | 4 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Track Link (Lubricate Type) (For Single Grouser) (Supply Parts)
| 07***22 | Plug,Large | 82 |
| 07***21 | Plug,(Small) | 82 |
| 11***21 | Link,Track? L.H | 80 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Track Link (Lubricate Type) (For Swamp Type) (Supply Parts)
| 07***22 | Plug,Large | 82 |
| 07***21 | Plug,(Small) | 82 |
| 11***21 | Link,Track? L.H | 80 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Travel Motor (1/3) (L.H.)
| 70***91 | Motor Ass'Y | 1 |
| (****0) | O-Ring | 1 |
| (****0) | Piston | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Travel Motor (1/3) (R.H.)
| 70***01 | Motor Ass'Y | 1 |
| (****0) | O-Ring | 1 |
| (****0) | Piston | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Travel Motor (2/3) (L.H.)
| (****3) | Valve Ass'Y,Relief | 1 |
| (****0) | O-Ring | 12 |
| (****0) | Valve Sub Ass'Y | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Travel Motor (2/3) (R.H.)
| (7***1) | Motor Ass'Y,R.H | 1 |
| (****3) | Valve Ass'Y,Relief | 1 |
| (****0) | O-Ring | 12 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Travel Motor (3/3) (L.H.)
| (****1) | Spring | 6 |
| (****0) | Piston,Brake | 1 |
| (****1) | Flange | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Service Kit And Component Parts : Travel Motor (3/3) (R.H.)
| (****1) | Spring | 6 |
| (****0) | Piston,Brake | 1 |
| (****1) | Flange | 1 |
Under Carriage
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Carrier Roller
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***70 | Bolt,(With Wear Guard) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Front Idler
| 01***40 | Bolt,For Weight Adjusting Bolt | 8 |
| 01***10 | Nut,(Fig.F2820-01a3-12) | 2 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Idler Cushion
| 01***30 | Bolt - M8 X 30lg | 4 |
| 01***75 | Capscrew | 8 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Roller Guard
| 01***35 | Bolt,(With Rops) | 6 |
| 01***45 | Bolt,(For 60ton Dump Body) | 12 |
| 01***50 | Bolt,(For D60pl) | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Roller Guard (Full Guard)
| 01***30 | Bolt,(Not Used When Towing Winch) | 16 |
| 01***35 | Bolt,(With Rops) | 22 |
| 01***45 | Bolt,(For 60ton Dump Body) | 12 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Frame Cover
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 16 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 18 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Frame Cover (For Rear Attachment)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 12 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 10 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 4 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Frame Cover (For Swing Drawber)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 20 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 4 |
| 01***85 | Bolt,(Used With Pin Puller) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Roller
| 01***50 | Bolt,(For D60pl) | 48 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 48 |
| 07***42 | O-Ring, Between Tube And Divider Valve | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Roller (Double Grouser) (For Double Flange)
| 01***50 | Bolt,(For D60pl) | 16 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 16 |
| 07***42 | O-Ring, Between Tube And Divider Valve | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Roller (Single Grouser) (For Double Flange)
| 01***50 | Bolt,(For D60pl) | 32 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 32 |
| 07***42 | O-Ring, Between Tube And Divider Valve | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Shoe (Lubricate Type) (Single Grouser) (600mm Wide)(#5501-5585)
| 07***22 | Plug,Large | 82 |
| 07***21 | Plug,(Small) | 82 |
| 11***11 | Bolt? Shoe (Y0320-K1) | 320 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Shoe (Lubricate Type) (Single Grouser) (600mm Wide)(#5586-)
| 07***22 | Plug,Large | 82 |
| 07***21 | Plug,(Small) | 82 |
| 11***11 | Bolt? Shoe (Y0320-K1) | 320 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Under Carriage : Track Shoe (Lubricate Type) (Swamp Type) (600mm Wide)
| 07***22 | Plug,Large | 82 |
| 07***21 | Plug,(Small) | 82 |
| 11***21 | Link,Track? L.H | 80 |
Work Equipment
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Angle Cylinder (Pat)
| (7***2) | Cylinder Ass'Y | 2 |
| (7***3) | Cylinder Ass'Y | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Blade (Power Angle Power Tilt Dozer)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 24 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Blade (Power Angle Power Tilt Dozer) (For Narrow Gauge)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 22 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Blade Lift Cylinder (Pat)
| (7***2) | Cylinder Group,R.H | 1 |
| (7***2) | Cylinder Group,L.H | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Dozer Frame (Pat)
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***65 | Bolt,(Without Rops) | 8 |
| 01***55 | Bolt,(Without Rops Guard? Canopy) | 8 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Dozer Oil Line (Angle Cylinder Line) (Pat)(#5501-5559)
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***55 | Bolt,(See Service News) | 1 |
| 01***95 | Capscrew | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Dozer Oil Line (Angle Cylinder Line) (Pat)(#5560-)
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***55 | Bolt,(See Service News) | 1 |
| 01***95 | Capscrew | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Dozer Oil Line (Cover) (Pat)
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
| 01***50 | Bolt,(Spark Arrester Spec.) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Drawbar
| 01***60 | Capscrew | 4 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 4 |
| 04***12 | Pin,Cotter (For Ripper) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Drawbar (For Eu)
| 01***60 | Capscrew | 4 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 4 |
| 04***12 | Pin,Cotter (For Ripper) | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Drawbar (For Ripper)
| 01***60 | Bolt,Rear | 2 |
| 01***60 | Flat Washer - M20 (Hardened) | 2 |
| 11***20 | Hitch Ass'Y | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Link (Cylinder Pin) (Pat)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 18 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***95 | Screw | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Rear P.T.O.
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***90 | Capscrew | 4 |
| 01***65 | Bolt | 1 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Swing Drawbar
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
| 01***55 | Bolt,(Without Rops) | 16 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Swing Drawbar (For Eu)
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
| 01***55 | Bolt,(Without Rops) | 16 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : D37px-21a(S/N 5501-Up (Overseas Version)) : Work Equipment : Tilt Cylinder (Pat)
| (7***2) | Cylinder Ass'Y | 1 |
D37PX-21A(S/N 5501-UP (Overseas Version)) 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 of the serial number sequence following the model designation. Verify the serial number against the catalog title to ensure it matches the 5501-UP range for the D37PX-21A.
| Prefix | Identifies | Notes |
|---|---|---|
| D37 | D37PX-21A (Overseas Version) | Identifies the crawler dozer family and size class. The 'PX' suffix denotes LGP/wide-track configuration. The '-21A' dash number indicates the specific generation/series. Serial range 5501-UP applies to this overseas variant. |
Frequently asked questions
What engine powers this model?
The D37PX-2ly is powered by the Komatsu SAA4D102E-2 turbocharged and air-to-air aftercooled diesel engine, producing 85 HP (63.4 kW).
What is the operating weight?
The operating weight for this specific configuration is approximately 13,910 lb (6,309.5 kg).
What replaced this machine?
Information regarding a direct successor for the D37PX-21A is not documented in the provided technical literature.
What D37PX-21A(S/N 5501-UP (Overseas Version)) owners discuss
What are the common causes of movement failure in the transmission or hydraulics of a D37PX-21?
The machine may experience failures in forward or reverse movement due to transmission pump failures or malfunctions within the hydraulic control valves.
How does the AS valve affect the operation of the travel motors and work equipment?
Issues with the AS valve can result in a loss of hydraulics to both the travel motors and the work equipment, often linked to the HST brake quick return circuit.
What specific steering or tracking behavior has been reported during gear shifts or braking?
Operators have reported the right track moving backward when the brake is released regardless of shifter position. Additionally, some units may experience veering to the left when shifting into 2nd gear.
What are the known engine specifications and emissions compliance for this series?
The machine uses a Komatsu SAA4D102E-2 turbocharged and air-to-air aftercooled diesel engine. It provides an output of 63 kW (85 HP) and meets Tier II EPA, EU, and Japan emissions regulations.
What electrical or sensor issues are common in this model range?
Electrical problems have been documented for the D37EX-21A variant. Users should monitor for system controller errors and potential wiring issues in components like the fuel vapor solenoid.
What is the most critical factor to evaluate when purchasing a used D37PX-21A (S/N 5501-UP)?
Verify the ease and cost of parts availability, as this can be a significant issue for older Komatsu equipment. Additionally, check telematics logs for any discrepancies between dashboard hours and recorded data to rule out hour-meter rollback.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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