Komatsubulldozersmall ( - d39)
Komatsu D31Q-17(S/N 32001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D31Q-1CT (S/N 32001-UP) is a compact crawler loader within the D31 series, engineered for utility earthmoving and construction. This machine features a Komatsu 4D105-5 engine delivering approximately 66 hp (49.2 kW) and an operating weight of roughly 15,430 lb (6,999 kg). Produced between 1984 and 1991, it offers configurations including standard and swamp applications, characterized by its 1.1 yd³ (0.8 m³) heaped bucket capacity and a 4.1 mph (6.5 km/h) maximum travel speed.
The D31Q-17 represents a specific generation in the D31 lineage, following the D31Q-16 series. While earlier models focused on basic utility, the -17 series integrated more robust engine and design features for improved durability. In today's used market, this machine remains significant due to its manageable operating weight and specialized configurations like the swamp application, making it a valuable asset for access-limited jobsites where larger dozers cannot operate.
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 D31Q-17(S/N 32001-UP) specifications
Engine
| Engine Model | 4D105-5 |
| Net Power | 65.7 hp (49 kW) to 66 hp (49.3 kW) |
| Displacement | 264 cu in (4.3 L to 4.4 L) |
| Engine Speed at Max Torque | 2,350 rpm |
Weights
| Operating Weight | 15,430 lb (6,999 kg) |
Dimensions
| Transport Length | 13.28 ft (4.04 m) to 13.3 ft (4.04 m) |
| Transport Width | 7.38 ft (2.25 m) to 7.39 ft (2.25 m) |
| Transport Height | 8.87 ft (2.71 m) to 8.88 ft (2.71 m) |
| Track Width | 23.6 in (600 mm) to 23.63 in (600 mm) |
| Track Gauge | 64.97 in (1,650 mm) |
| Track Shoe Width | 23.6 in (600 mm) to 23.63 in (600 mm) |
| Length of Track on Ground | 6.17 ft (1,880 mm) |
| Ground Clearance at Full Height and Dump | 103.94 in (2,640 mm) |
| Reach at Dump Height | 2.47 ft (750 mm) to 3.3 ft (1 m) |
Performance
| Max Speed | 4.04 mph (6.5 km/h) to 4.1 mph (6.6 km/h) |
| Ground Pressure | 4.41 psi (30.4 kPa) to 4.5 psi |
| Static Tipping Load | 9,770 lb (4,431.6 kg) |
| Breakout Force - Std Bucket | 14,990 lb (66.7 kN to 67.99 kN) |
Blades/Buckets
| Bucket Capacity - Heaped | 1.0 yd³ (0.8 m³ to 1.1 yd³) |
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.
D31Q-17(S/N 32001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase (w/ filter) | 10w/30, 15w/4/0 Engine Oil (varies by climate/series; 10w/30 Low Saps also noted for Komatsu range) | |
| Cooling System | 22 L (5.9 gal) | Antifreeze Blue Concentrate or Red OAT 5 Year Antifreeze Coolant |
| Fuel Tank | 115 L (30.4 gal) | |
| Transmission/Powertrain (Powershift Transmission + Bevel Gear/Steering Compartments) | CAT 10w or CAT 30w Transmission Fluid; 80w/90 GL4 or GL5 Gear Oils for Axle/Gearbox/Hubs | |
| Final Drives (each) | 80w/90 EP GL5 | |
| Hydraulic System/Tank | Komatsu Hydraulic Oil (ISO HLP 32, 46, or 68; HVI 32 or 46 also noted for Komatsu range) | |
| Grease |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu D31Q-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 |
|
| Every 4,000 h |
|
Servicing the D31Q-17(S/N 32001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize oil analysis to monitor engine and hydraulic health. Regularly check the bevel case dipstick and transmission dipstick located under the seat for proper levels. Monitor the cooling system fluid capacity, which holds approximately 5.9 gal (22 L), to prevent overheating. Early detection of oil loss in the steering area can prevent expensive damage to steering components.
Corrective & Common Repairs
Address transmission jerking or high-pitched whining by inspecting and cleaning the transmission strainer. If movement ceases despite a running engine, verify the fuel/hydraulic system integrity. For electrical issues, reference fault codes such as E15 for engine sensors or AB00KE for low charging voltage. Ensure all hydraulic hoses are inspected for leaks to prevent pump cavitation.
Overhaul & Rebuild Points
Plan major overhauls around the 2,000-hour mark, focusing on valve adjustments and hydraulic oil replacement. When rebuilding the engine, verify compatibility with the Komatsu 4D105-5 model. For undercarriage rebuilds, inspect the five track rollers per side and the 600 mm (23.6 in) track shoe width for excessive wear to maintain optimal ground pressure.
Seasonal & Environment Servicing
In dusty or heavy-duty environments, tighten service intervals for air cleaner inspections and fuel filter replacements. For swamp application configurations, pay extra attention to undercarriage cleanliness and idler bracket integrity. Ensure the 30.4 gal (115 L) fuel tank is topped with clean diesel to prevent contamination in high-moisture or extreme temperature settings.
D31Q-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.
D31Q-17(S/N 32001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E15 | Engine sensors fault (temperature, fuel pressure, or oil pressure) | Faulty engine sensor or electrical circuit failure | Inspect engine sensors and wiring for damage or disconnection |
| E03 | Swing parking brake system fault | Electrical fault in the brake circuit | Verify electrical connections and brake solenoid operation |
| AB00KE | Low battery charge voltage | Alternator failure or malfunctioning charging system | Test alternator output and inspect battery health |
| AA10NX | Air cleaner clogging | Excessive dust intake or saturated air filter element | Inspect and replace the air cleaner element |
| CA428 | Water detected in fuel | Contamination in the fuel supply | Stop operation and drain the water separator immediately |
| E10 | Engine controller power failure or drive circuit malfunction | Electrical failure in the engine control system | Check engine controller power supply and circuits |
| CA144 | High coolant temperature sensor error | Sensor failure or actual engine overheating condition | Verify coolant temperature and inspect sensor wiring |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D31Q-17(S/N 32001-UP) attachments & work tools
Blades
Standard configuration includes a basic blade with ROPS cabin. Aftermarket MS Ripper compatible blades are available, though specific S/U/A or VPAT widths and capacities for this exact serial range are not documented in provided technical data.
Rippers
Multi-shank parallelogram style rippers are available for the D31 series. A complete set includes a structure with three shanks, three tips, two cylinders, and hoses, weighing 720 kg (1587 lb) with dimensions of 1.7 m (5.58 ft) length, 1.3 m (4.27 ft) width, and 0.8 m (2.62 ft) height.
Winches
Specific winch class or towing winch options for the D3/Q-17 (S/N 32001-UP) are not documented in the available technical specifications.
Drawbars/Counterweights
Counterweight and drawbar attachment availability is not specified for this exact serial range; however, these components are listed as general bulldozer attachment types for the D31 series.
Cab/ROPS Guarding
Standard configuration features a ROPS cabin. Specific forestry or waste-specific guarding options (such as screen/sweep or tree pushers) are listed as general attachment types for the D31 series but specific compatibility for this serial range is not detailed.
Hydraulic Arrangement
The machine utilizes a hydraulic system requiring regular checks; however, specific front/rear tool hydraulic flow or arrangement notes are not provided. Maintenance of the system requires ensuring cylinders are installed in non-contaminated hydraulic systems.
All D31Q-17(S/N 32001-UP) assemblies by section
Every catalogued assembly group for the Komatsu D31Q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-17(S/N 32001-Up) : Damper And Transmission : Transmission Control Lever(#32001-32483)
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***20 | Screw, Filter Mounting | 4 |
Komatsu : D31q-17(S/N 32001-Up) : Damper And Transmission : Transmission Control Lever(#32484-)
| 01***30 | Bolt,(For Mechanical Governor) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***20 | Screw, Filter Mounting | 4 |
Komatsu : D31q-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 : D31q-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 : D31q-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 : D31q-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Battery(#32001-32947)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***18 | Bolt | 1 |
Komatsu : D31q-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Battery(#32948-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***18 | Bolt | 1 |
Komatsu : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-17(S/N 32001-Up) : Engine Related Parts And Electrical System : Radiator And Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 14 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
| 01***60 | Bolt (M10-1.50x60) | 2 |
Guard
Komatsu : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-17(S/N 32001-Up) : Guard : Radiator Guard And Hood(#32001-32311)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***35 | Bolt,(For Pedal Steering) | 16 |
Komatsu : D31q-17(S/N 32001-Up) : Guard : Radiator Guard And Hood(#32312-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***35 | Bolt,(For Pedal Steering) | 16 |
Komatsu : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-17(S/N 32001-Up) : Optional Parts : Straight Blade
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***20 | Bolt | 2 |
| 01***15 | Nut | 2 |
Komatsu : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-17(S/N 32001-Up) : Track : Track Shoe (Lubricate Type)(#32001-32473)
| 01***20 | Nut,Shoe (Kit) | 330 |
| 11***10 | Shoe Bolt And Nut K.,(Except Swamp) | 1 |
| 11***11 | Bolt? Shoe,Track (Kit) | 330 |
Komatsu : D31q-17(S/N 32001-Up) : Track : Track Shoe (Lubricate Type)(#32474-)
| 01***20 | Nut,Shoe (Kit) | 330 |
| 07***22 | Plug,Large | 74 |
| 07***21 | Plug,(Small) | 74 |
Komatsu : D31q-17(S/N 32001-Up) : Track : Track Shoe (Master Pin Type)
| 01***20 | Nut,Shoe (Kit) | 346 |
| 11***10 | Shoe Bolt And Nut K.,(Except Swamp) | 1 |
| 11***11 | Bolt? Shoe,Track (Kit) | 346 |
Work Equipment
Komatsu : D31q-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 : D31q-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 : D31q-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 : D31q-17(S/N 32001-Up) : Work Equipment Control System : 2-Spool Control Valve (2/2)
| 01***05 | Nut,(For Air Conditioner Less), Nut | 1 |
| 07***12 | O-Ring (Itl) | 1 |
| 07***12 | Ring,Back-Up; Was 07001-02012, Ring,Back-Up (Itl) | 1 |
Komatsu : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 : D31q-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 |
D31Q-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 near the radiator support. Read the model prefix and serial number to identify the machine family and configuration.
| Prefix | Identifies | Notes |
|---|---|---|
| D31Q-17 | D31Q-17 (S/N 32001-UP) | Crawler dozer family. Q-series configuration. -17 generation. Engine is Komatsu 4D105-5H or 4D105-5T. Production years approximately 1984–1991. Origin: Japan. |
Frequently asked questions
What engine is used in the Komatsu D31Q-17?
The machine is equipped with a Komatsu 4D105-5 engine, providing approximately 66 hp (49.2 kW) of net power.
What is the operating weight of this model?
The operating weight for the D31Q-17 (S/N 32001-UP) is approximately 15,430 lb (6,999 kg).
What machine replaced the D31Q-17?
The D31Q-17 was part of a lineage that included subsequent generations such as the D31Q-18 and D31Q-20 series.
What D31Q-17(S/N 32001-UP) owners discuss
What are common symptoms of transmission or hydraulic pump failure in the D31Q-17?
Operators report intermittent jerking while moving, which may lead to the machine stopping entirely. A high-pitched whining noise accompanied by a refusal to move often indicates hydraulic pump failure. In some cases, cleaning or replacing the transmission filter/strainer can temporarily restore movement.
How should I check for oil leaks in the bevel case area?
Check the Bevel Case dipstick located under the seat. If the bevel case is losing oil into the steering area, it can cause significant damage to the steering components.
What specific engine and design changes occurred during this production era?
The D31Q-17 (S/N 32001-UP) utilizes a Komatsu 4D105-5 engine. Note that for the loader series, Komatsu implemented changes to both the engine and general machine design at the 17 or 18 series mark.
What is a known risk regarding brake and clutch adjustment?
Improperly adjusted brakes may engage before the clutches. This causes the machine to drive through the brakes, which can lead to premature wear or failure. Both systems require careful synchronization.
Where are the transmission strainers/filters located on this model?
Access points for filters include a 1/2 inch drive ratchet plug located at the top near the forward/reverse control plungers, and a small flat rectangular plate at the very back between the brake adjusters.
What should be inspected when purchasing a used D31Q-17 (S/N 32001-UP)?
Verify that the serial number on the riveted chassis plate matches the number stamped into the chassis frame casting. A mismatch is a primary indicator of stolen or tampered equipment. Additionally, check for any signs of oil loss in the bevel case and inspect the condition of the transmission strainer.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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