Komatsubulldozersmall ( - d39)
Komatsu D31S-17(S/N 32001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D31S-17 (S/N 32001-UP) is a compact crawler loader designed for utility earthmoving, land clearing, and grading. This machine belongs to the D3 31 series and features a 4D105-5 engine delivering approximately 66 hp (49 kW). It operates within a weight class of roughly 14,771 lb (6,700 kg) and is configured with a track gauge of 57.09 in (1450 mm). The series follows the D31S-16 lineage and serves as a predecessor to later iterations like the D31S-20.
The -17 generation represents a specific evolution in the D31 series, characterized by its distinct engine configuration and hydraulic performance. In today's used equipment market, this machine is valued for its specialized footprint and low ground pressure of 7.68 psi (52.96 kPa), making it ideal for sensitive job sites. Maintenance of the -17 series focuses on preserving the integrity of the 4D105-5 powertrain and managing undercarriage wear to maintain resale value and operational reliability.
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 D31S-17(S/N 32001-UP) specifications
Engine
| Engine Model | 4D105-5 |
| Net Power | 66 hp (49.3 kW) |
| Displacement | 264 cu in (4.4 L) |
Weights
| Operating Weight | 14,771 lb (6,700 kg) |
Dimensions
| Length With Bucket On Ground | 13.6 ft in (4145 mm) |
| Width To Outside Of Tracks | 5.88 ft in (1790 mm) |
| Height To Top Of Cab | 8.72 ft in (2655 mm) |
| Clearance At Full Height And Dump | 8.34 ft in (2540 mm) |
| Reach At Dump Height | 2.73 ft in (830 mm) |
| Track Gauge | 57.09 in (1450 mm) |
| Length Of Track On Ground | 6.17 ft in (1880 mm) |
| Track Shoe Width | 13 in (330 mm) |
Performance
| Max Speed | 4.1 mph (6.5 km/h) |
| Ground Pressure | 7.68 psi (52.96 kPa) |
| Static Tipping Load | 9,390 lb (4259.3 kg) |
| Breakout Force - Std Bucket | 14,110 lb (62.8 kN) |
Blades
| Bucket Capacity - Heaped | 1.1 yd3 (0.8 m3) |
Service Capacities
| Fuel Capacity | 30.4 gal (115 L) |
| Cooling System Fluid Capacity | 5.9 gal (22 L) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D31S-17(S/N 32001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Cooling System | 5.9 gal (22 L) | not documented |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu D31S-17(S/N 32001-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the D31S-17(S/N 32001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor the 4D105-5 engine oil and hydraulic fluids regularly. Use fluid analysis to detect early signs of metal wear or coolant contamination. For this series, track cooling system fluid levels (approx. 5.9 gal / 22 L) to prevent overheating. Regularly check fuel tank levels (30.4 gal / 115 L) and inspect for water separation in the fuel system to protect injectors.
Corrective & Common Repairs
Address hydraulic leaks at cylinder seals or hose connections immediately to prevent pressure loss. Monitor steering clutch and brake performance, as these components are critical for maneuverability. If electrical failures occur, inspect the wiring harness for corrosion or blown fuses. Watch for airlock issues in the transmission pump, a known concern on older Komatsu crawler units, which can cause erratic shifting.
Overhaul & Rebuild Points
Plan major overhauls around engine displacement limits and compression loss in the 4D105-5 diesel unit. Inspect final drive components for gear wear and shaft seal integrity during rebuild cycles. When rebuilding the undercarriage, evaluate the condition of the five track rollers per side and the drive sprockets. Ensure all structural pins and bushings are replaced to restore factory-spec blade and arm clearances.
Seasonal & Environment Servicing
In muddy or high-dust environments, increase frequency of air cleaner cleaning and radiator flushing. During winter operations, ensure the cooling system is prepared for low temperatures and check track tension to prevent excessive lugging. For machines sitting idle, run the engine periodically to prevent seal drying and verify that fuel does not degrade in the 30.4 gal (115 L) tank.
D31S-17(S/N 32001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 09637-30161 | Plate? Instruction,Air Cleaner (Single Element) | Air intake service | Check fitment → |
| 103-98-21850 | Plate? Caution,Oil Filter | Lubrication service | Check fitment → |
| 01220-40820 | Screw, Filter Mounting | Scheduled service item | 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.
D31S-17(S/N 32001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E10 | Engine controller power failure | Faulty ECM power connections, blown fuses, or defective 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 |
| CA122 | Intake air pressure high voltage | Malfunctioning intake pressure sensor or wiring fault | Verify the intake pressure sensor and associated wiring |
| CA123 | Intake air pressure low voltage | Sensor short circuit or airflow restriction in the intake system | Check for sensor shorts or physical intake obstructions |
| CA451 | Common rail pressure sensor feedback value too high | Malfunctioning fuel rail pressure sensor or actual overpressure condition | Diagnose the fuel rail pressure sensor or inspect pump lines |
| B@BCNS | Engine coolant overheating | Low coolant level, radiator fin blockage, or fan belt failure | Check radiator fins, fan belt, and coolant level |
| B@HANS | Hydraulic oil overheating | Contaminated hydraulic oil or clogged hydraulic filter | Change hydraulic oil and filter; inspect the cooler fan |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D31S-17(S/N 32001-UP) attachments & work tools
Blades
Available configurations include S, SU, and A types. Some units may feature VPAT options; specific widths and capacities vary by configuration.
Rippers
MS ripper attachments with 2 cylinders are available for this model.
Winches
Not documented for this exact serial range — verify with your dealer.
Drawbars/counterweights
Not documented for this exact serial range — verify with your and dealer.
Cab/ROPS guarding options
Not documented for this exact serial range — verify with your dealer.
Hydraulic arrangement notes
The machine features two lever blade raises and a hydroshift transmission. The engine is a direct injection Komatsu diesel engine.
All D31S-17(S/N 32001-UP) assemblies by section
Every catalogued assembly group for the Komatsu D31S-17(S/N 32001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Damper And Transmission
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : 1st Housing
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : 2nd Housing
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***55 | Bolt | 10 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 12 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Damper
| 01***18 | Bolt (Op) | 12 |
| 01***30 | Bolt,(For France Noise Suppression) | 16 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 16 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Forward And 3rd Housing
| 04***24 | Pin,Dowel (For No.3 Housing) | 2 |
| 04***20 | Ring, Snap | 1 |
| 06***07 | Bearing,Ball | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Inching Pedal (1/2)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***07 | Nut,L.H. Thread (D31s) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Inching Pedal (2/2)
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Modulation Valve
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***60 | Bolt,(Without Alternator Bracket) | 2 |
| 01***70 | Bolt | 6 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Reverse Housing
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***12 | Washer,Holder | 1 |
| 04***00 | Key | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Selector And Inching Valve
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***50 | Bolt,(For Trimming Dozer) | 5 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Transmission Case
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Bolt,(Without Auto Priming System) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Transmission Control Lever(#32001-32431)
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***20 | Screw, Filter Mounting | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Transmission Control Lever(#32432-)
| 01***30 | Bolt,(For Mechanical Governor) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***20 | Screw, Filter Mounting | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Transmission Control Linkage
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***05 | Nut,L.H. Thread (D31s) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Damper And Transmission : Transmission Pump
| 01***55 | Bolt,(For Trimming Dozer) | 7 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 7 |
| 07***14 | O-Ring,(F4350-63a0 -20 ), O-Ring | 2 |
Komatsu : D31s-17(S/N 32001-Up) : 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 |
Engine Related Parts And Electrical System
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Battery(#32001-32955)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***18 | Bolt | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Battery(#32956-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***18 | Bolt | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Electrical System
| 01***16 | Bolt (Welded) | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***20 | Bolt,Front (Except Japan) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever (1/2)
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever (2/2)
| 01***30 | Bolt,(Cold Terrain Spec.) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***05 | Nut,L.H. Thread (D31s) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Instrument Panel (For Lever Steering)
| 01***16 | Bolt (Welded) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Instrument Panel (For Pedal Steering)
| 01***16 | Bolt (Welded) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Oil Cooler And Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***70 | Bolt, Spacer | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 6 |
Komatsu : D31s-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Radiator And Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
| 01***60 | Bolt (M10-1.50x60) | 2 |
Guard
Komatsu : D31s-17(S/N 32001-Up) : Guard : Cross Bar
| 01***50 | Bolt, Fuel Tank Mounting - Front Left | 28 |
| 01***65 | Bolt, Mount Side Weights | 8 |
| 01***60 | Flat Washer - M20 (Hardened) | 36 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Engine Bottom Guard
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***35 | Bolt,(For Pedal Steering) | 16 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Hitch
| 01***55 | Bolt, Strut Mounting - To Radiator And Rear Frame | 2 |
| 01***60 | Flat Washer - M20 (Hardened) | 2 |
| 11***20 | Hitch Ass'Y | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Marks And Plates (English) (Except Japan)
| 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 : D31s-17(S/N 32001-Up) : Guard : Marks And Plates (French And English) (Except Japan)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (For France) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Marks And Plates (German And English) (Except Japan)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (German) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Marks And Plates (Indonesian And English) (Except Japan)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Marks And Plates (Spanish And English) (Except Japan)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (Spanish) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Operator'S Seat
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Radiator Guard And Hood(#32001-32319)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***35 | Bolt,(For Pedal Steering) | 16 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Radiator Guard And Hood(#32320-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***35 | Bolt,(For Pedal Steering) | 16 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Rear Cover And Hydraulic Tank
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 42 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Guard : Side Frame And Floor Plate
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 16 |
| 01***35 | Bolt,(For Pedal Steering) | 2 |
| 01***40 | Bolt,(For Center Guard) | 12 |
Optional Parts
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Additional Fuel Strainer
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Back-Up Alarm
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***20 | Screw | 3 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Back-Up Alarm (Able To Avail)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 08***10 | Tape,For Additional Rear Lamp | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Battery-Large Capacity
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***65 | Bolt,(For Suction Fan)(4d130-1d) | 1 |
| 08***15 | Battery (145g51),(Except Japan) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Brake Pedal
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***30 | Bolt,(For France Noise Suppression) | 5 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Bucket Indicator
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 8 |
| 01***09 | Nut,(With Body Positioner) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Bucket Positioner
| 01***30 | Bolt | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : 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 : D31s-17(S/N 32001-Up) : Optional Parts : Car Heater (For Steel Cab) (1/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 6 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Car Heater (For Steel Cab) (2/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 1 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Upper) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Control Valve (For Bucket Positioner) (1/2)
| 01***20 | Bolt (Itl) | 4 |
| 01***30 | Bolt | 4 |
| 07***30 | Ring, Seal - Between Sections | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Control Valve (For Bucket Positioner) (2/2)
| 01***05 | Nut,(For Air Conditioner Less), Nut | 1 |
| 07***21 | O-Ring,Oil Cooler Pipe | 1 |
| 07***12 | Ring,Back-Up; Was 07001-02012, Ring,Back-Up (Itl) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Front Hook
| 01***35 | Bolt,(For Pedal Steering) | 10 |
| 01***50 | Screw | 6 |
| 01***42 | Washer,Spring (For Pedal Steering) | 10 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Front Hook (Able To Avail)
| 01***35 | Bolt,(For Pedal Steering) | 10 |
| 01***42 | Washer,Spring (For Pedal Steering) | 10 |
| 07***18 | Plug,(With Extinguisher) (D31p) | 6 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Head Guard
| 01***45 | Bolt,(For Slag Handling) | 8 |
| 01***65 | Bolt - Battery Box | 8 |
| 01***75 | Bolt,Dust | 24 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Hinge Type Mask
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***35 | Bolt,(For Pedal Steering) | 2 |
| 01***00 | Bolt | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Inching Pedal (For Lever Steering) (1/2)
| 01***32 | Bolt | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Inching Pedal (For Lever Steering) (2/2)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Large Bucket
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***20 | Bolt | 2 |
| 01***15 | Nut | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Operator'S Seat (Oil Damper Reclining)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 09***00 | Belt,Lap (Without Tbg Spec.) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Operator'S Seat (Oil Damper)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 09***00 | Belt,Lap (Without Tbg Spec.) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Perforated Engine Side Cover
| 11***70 | Cover,L.H | 1 |
| 11***80 | Cover,R.H | 1 |
| 13***90 | Knob | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Radiator Shutter
| 01***20 | Screw (Not Illustrated) | 4 |
| 01***03 | Nut,(With Joy Stick Steering) | 4 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rain Cap Cover
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rear Counter Weight
| 01***16 | Nut - M20 | 8 |
| 01***60 | Flat Washer - M20 (Hardened) | 8 |
| 11***10 | Stud | 8 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rops Cab (1/6)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***16 | Screw,(Sandy And Dusty Terrain S.) | 8 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rops Cab (2/6)
| 01***40 | Bolt,(For Center Guard) | 16 |
| 01***45 | Bolt,(For Slag Handling) | 18 |
| 01***65 | Bolt - Battery Box | 6 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rops Cab (3/6)
| 01***20 | Bolt | 4 |
| 01***45 | Bolt | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rops Cab (4/6)
| 01***16 | Bolt (Welded) | 8 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rops Cab (5/6)
| 01***16 | Bolt (Welded) | 8 |
| 01***12 | Screw,(Additional Sun Visor) | 1 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rops Cab (6/6)
| 01***16 | Bolt (Welded) | 9 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***19 | Washer,(Not Used With Ventilator) | 9 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Rops Canopy
| 01***40 | Bolt,(For Center Guard) | 16 |
| 01***45 | Bolt,(For Slag Handling) | 18 |
| 01***65 | Bolt - Battery Box | 6 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Sandy Spec (Without Cab)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 08***00 | Fuse? 20a,(For 800w Alternator) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Steering Control Lever
| 01***16 | Bolt (Welded) | 2 |
| 01***10 | Nut,(Without Air Conditioner) | 2 |
| 01***09 | Nut (Itl) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Steering Control Linkage (1/2)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***05 | Nut,L.H. Thread (D31s) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Steering Control Linkage (2/2)
| 01***40 | Bolt,R.H. Outside And L.H. Inside, Bolt | 2 |
| 01***06 | Nut? L.H. Thread,L.H. Thread (For Chinese) | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Strengthened Double Mask
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***35 | Bolt,(For Pedal Steering) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Strengthened Lower Guard
| 01***35 | Bolt,(For Pedal Steering) | 18 |
| 01***42 | Washer,Spring (For Pedal Steering) | 18 |
| 07***18 | Plug,(With Extinguisher) (D31p) | 6 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Strengthened Mask
| 10***20 | Mark | 1 |
| 11***10 | Grille | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Swing Drawbar
| 01***55 | Bolt, Strut Mounting - To Radiator And Rear Frame | 14 |
| 01***60 | Washer | 14 |
| 04***12 | Pin,Cotter (For Ripper) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Vandalism Protection
| 07***20 | Cap,(Lock Type) | 1 |
| 09***00 | Lock,(With Vandalism Protection) | 1 |
| 09***02 | Lock,(With Vandalism Protection) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Vehicle Inspection Parts (1/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***13 | Nut,(For Adjustable Rod) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Optional Parts : Vehicle Inspection Parts (2/2)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 1 |
Steering System And Final Drive
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Bevel Gear And Shaft
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 8 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Brake Band
| 01***35 | Bolt,(For Pedal Steering) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 8 |
| 01***26 | Washer | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Final Drive Gear
| 01***30 | Bolt,(For France Noise Suppression) | 36 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 36 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Final Drive Housing
| 01***30 | Bolt,Radio Controlled Slag Handling | 12 |
| 01***40 | Bolt,(For Center Guard) | 36 |
| 01***70 | Bolt - Thrust Plate Mounting | 10 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Parking Brake Lever
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***60 | Screw | 2 |
| 01***20 | Screw | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Sprocket And Shaft
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
| 01***45 | Bolt,(For Slag Handling) | 32 |
| 01***13 | Nut - Cylinder Mounting | 24 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Case And Main Frame
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 9 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 14 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Case Cover
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 22 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Clutch
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***12 | Screw,(D31s) | 2 |
| 01***10 | Nut (K10) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Control Linkage (1/2)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***05 | Nut,L.H. Thread (D31s) | 2 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Control Linkage (2/2)
| 01***40 | Bolt,(Not Used With Cab) | 2 |
| 01***06 | Nut? L.H. Thread,L.H. Thread (For Chinese) | 4 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 4 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Control Pedal
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
| 01***06 | Nut? L.H. Thread,L.H. Thread (For Chinese) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Control Valve (For Lever Steering)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 5 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Control Valve (For Pedal Steering)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 8 |
| 04***16 | Pin, Spring | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Steering System And Final Drive : Steering Oil Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 11 |
| 01***70 | Bolt, Heater Hose Clip | 1 |
Tool And Kit
Komatsu : D31s-17(S/N 32001-Up) : Tool And Kit : Service Kit
| 01***12 | Washer,Holder | 1 |
| 01***20 | Nut,Shoe (Kit) | 150 |
| 04***10 | Lock,Holder | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Tool And Kit : Tool
| 07***00 | Pump,Grease | 1 |
| 07***00 | Cartridge,Grease | 1 |
| 07***22 | Nozzle, Grease Pump | 1 |
Track
Komatsu : D31s-17(S/N 32001-Up) : Track : Carrier Roller
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***45 | Bolt, Fuel Tank Mounting - Front Right | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Track : Idler
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 8 |
| 01***10 | Nut,(Fig.F2820-01a3-12) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Track : Recoil Spring
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***40 | Bolt,(For Center Guard) | 12 |
| 01***45 | Bolt,(For Slag Handling) | 16 |
Komatsu : D31s-17(S/N 32001-Up) : Track : Track Frame
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***30 | Bolt,(For Center Guard) | 16 |
| 01***40 | Bolt,(For Center Guard) | 52 |
Komatsu : D31s-17(S/N 32001-Up) : Track : Track Roller
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***45 | Bolt,(For Slag Handling) | 40 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 12 |
Komatsu : D31s-17(S/N 32001-Up) : Track : Track Shoe (Lubricate Type)(#32001-32452)
| 01***41 | Nut | 148 |
| 01***42 | Washer,Spring (For Pedal Steering) | 148 |
| 01***20 | Nut,Shoe (Kit) | 330 |
Komatsu : D31s-17(S/N 32001-Up) : Track : Track Shoe (Lubricate Type)(#32453-)
| 01***41 | Nut | 148 |
| 01***42 | Washer,Spring (For Pedal Steering) | 148 |
| 01***20 | Nut,Shoe (Kit) | 330 |
Komatsu : D31s-17(S/N 32001-Up) : Track : Track Shoe (Master Pin Type)
| 01***41 | Nut | 148 |
| 01***42 | Washer,Spring (For Pedal Steering) | 148 |
| 01***20 | Nut,Shoe (Kit) | 346 |
Work Equipment
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment : Bucket
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***20 | Bolt | 2 |
| 01***15 | Nut | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment : Side Frame And Lift Arm
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 24 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 12 |
Work Equipment Control System
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : 2-Spool Control Valve (1/2)
| 01***20 | Bolt (Itl) | 4 |
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 01***30 | Bolt | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : 2-Spool Control Valve (2/2)
| 07***34 | O-Ring, O-Ring, Oil Level And Fill Plug | 3 |
| 07***34 | O-Ring, At Transmission Filter | 1 |
| 70***61 | O-Ring,(Pc100ss) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : Bucket Dump Cylinder
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : Bucket Lift Cylinder
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***05 | O-Ring, Steering Pump Mounting | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : Hydraulic Control Lever
| 01***25 | Bolt | 1 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : Hydraulic Filter And Piping
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Tank To/From Pump To/From Valve)
| 01***40 | Bolt,(For Position Fixing) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Valve To/From Dump Cylinder)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 1 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Valve To/From Lift Cylinder)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***45 | Bolt,(For Suction? Reversible Fan) | 2 |
Komatsu : D31s-17(S/N 32001-Up) : Work Equipment Control System : Hydraulic Pump
| 04***18 | Ring, Retaining | 1 |
| 70***10 | Pump Ass'Y | 1 |
| 70***10 | Seal, Oil | 1 |
D31S-17(S/N 32001-UP) serial number reference
The PIN plate is located on the front frame casting, typically on the operator's left side. To read the prefix, identify the first three characters of the serial number sequence.
| Prefix | Identifies | Notes |
|---|---|---|
| 32001-UP | D31S-17 | Serial range starts at 32001. Configuration varies; verify exact start with dealer. |
Frequently asked questions
What engine is installed in the Komatsu D31S-17?
The machine is powered by a Komatsu 4D105-5 diesel engine, providing approximately 66 hp (49 kW) of net power.
What is the operating weight of this model?
The operating weight for the D31S-17 is approximately 14,771 lb (6,700 kg).
What model replaced the D31S-17?
The D31S-20 is a subsequent model in the D31 series, featuring a slightly higher operating weight of approximately 14,947.4 lb.
What D31S-17(S/N 32001-UP) owners discuss
What are the common transmission issues reported for the D31S-17?
Operators have reported transmission airlocks or jerking motions. This behavior is often attributed to a faulty pump shaft seal, which allows the system to draw air instead of oil. Cleaning or replacing the transmission filter may provide temporary relief, but a bad seal is a suspected root cause for older units.
What engine is installed in the Komatsu D31S-17 (S/N 32001-UP)?
The machine is powered by the Komatsu 4D105-5 diesel engine. This is a 4-stroke, water-cooled engine with a displacement of approximately 4.3 L (264 cu in) and delivers 49.2 kW (66 hp) net power.
What electrical failures should be monitored on this machine?
Common electrical issues include blown fuses and wiring corrosion, which can prevent the engine from starting or cause general operational malfunctions. Regular inspection of the wiring harness is necessary to maintain system integrity.
What are the typical undercarriage specifications for this model?
The D31S-17 features a track gauge of 1450 mm (57.09 in) and a track shoe width of 330 mm (13 in). The undercarriage includes 5 track rollers per side, with a ground pressure of approximately 52.96 kPa (7.68 psi).
What are the standard fluid capacities for the D31S-17?
The fuel capacity is 115 L (30.4 gal) and the cooling system fluid capacity is 22 L (5.9 gal).
What should be inspected when purchasing a used D31S-17?
Verify the serial number on the chassis plate against the machine's documentation to ensure authenticity. Check for any mismatch between the riveted plate and the engraved frame number, as this can indicate stolen equipment. Additionally, inspect the engine block near the injection pump for the engine serial number and check the condition of the hydraulic cylinders for leaks.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific D31S-17(S/N 32001-UP) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.