Komatsubulldozersmall ( - d39)
Komatsu D31S-16(S/N 25001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D31S-16 (S/N 25001-UP) is a compact crawler loader designed for utility earthmoving and light grading. This machine belongs to the D series and features a Komatsu 4D105-5 engine, delivering approximately 63 hp (47 kW). It operates within a weight class of roughly 14,727 lb (6,680 kg) and is configured with a 1.1 yd³ (0.8 m³) heaped bucket capacity. The series includes related configurations such as the D31Q-16.
The D31S-16 represents a specific generation of Komatsu's small-scale earthmoving lineage, characterized by its narrow transport width of 5.87 ft (1.79 m) and low ground pressure. In today's used equipment market, this model remains significant due to its high parts availability for the 4D105 engine series and durable undercarriage design. Its compact footprint makes it a preferred choice 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 D31S-16(S/N 25001-UP) specifications
Engine
| Engine Model | 4D105-5 |
| Net Power | 63 hp (47 kW) |
| Displacement | 264 cu in (4.4 L) |
Weights
| Operating Weight | 14,726.9 lb (6,680 kg) |
Dimensions
| Length With Bucket On Ground | 13.64 ft in (4,155 mm) |
| Width To Outside Of Tracks | 5.88 ft in (1,790 mm) |
| Clearance At Full Height And Dump | 8.35 ft in (2,545 mm) |
| Reach At Dump Height | 31.89 in (810 mm) |
| Transport Width | 5.87 ft (1.79 m) |
| Transport Height | 8.42 ft (2.56 m) |
| Transport Length | 13.6 ft (4.14 m) |
Undercarriage
| Track Gauge | 57.09 in (1,450 mm) |
| Length Of Track On Ground | 6.17 ft in (1,880 mm) |
| Number Of Track Rollers Per Side | 5 |
| Track Shoe Width | 13 in (330 mm) |
| Ground Pressure | 7.68 psi (52.96 kPa) |
Performance
| Max Speed | 4.1 mph (6.5 km/h) |
| Breakout Force - Std Bucket | 6,400 lb (28.5 kN) |
| Static Tipping Load | 4,150 lb (1,882.5 kg) |
Blades/Buckets
| 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-16(S/N 25001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase (w/ filter) | not specified | Komatsu genuine diesel engine oil |
| Cooling System | 5.9 gal (22 L) | Komatsu super coolant |
| Fuel Tank | not specified | Diesel |
| Transmission/Powertrain (powershift transmission + bevel gear/steering compartments) | not specified | Komatsu powertrain oil |
| Hydraulic System/Tank | not specified | Komatsu hydraulic oil |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu D31S-16(S/N 25001-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-16(S/N 25001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor the 4D10SS engine oil and hydraulic fluid for particulate contamination. Regularly check the cooling system capacity, which holds approximately 5.9 gal (22 L), to prevent overheating. Use Komatsu genuine lubricants to maintain engineering standards. Analyze fuel water separator levels frequently to protect the injection pump from moisture-induced damage. Consistent monitoring of transmission oil levels prevents airlock issues common in older units.
Corrective & Common Repairs
Address steering clutch or brake issues immediately if pulling performance decreases on one side. Inspect transmission pumps for shaft seal failures if the system draws air, causing low pressure. Check blade tilt rods and angle cylinders if the blade fails to hold position or tilts unevenly. Ensure all hydraulic hoses are inspected for abrasions that could lead to sudden loss of breakout force during heavy digging.
Overhaul & Rebuild Points
Plan major engine overhauls around the 4D105-5 displacement limits and compression changes. Monitor undercarriage wear, specifically track roller and track shoe thickness, to determine when a full undercarriage rebuild is required. Evaluate the final drive and transmission gear sets during high-hour intervals. Rebuilding the hydraulic pump assembly is necessary if flow rates drop below factory specifications for bucket lifting speed.
Seasonal & Environment Servicing
In muddy or wet environments, clean the undercarriage daily to prevent mud buildup in the track rollers and idlers. During cold operations, ensure the cooling system is properly treated with Komatsu super coolant to prevent freezing. In dusty conditions, increase frequency of air pre-cleaner cleaning and inspect the radiator core for blockages. Check all grease points on the bucket linkage before seasonal transitions to maintain smooth articulation.
D31S-16(S/N 25001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6127-61-2971 | O-Ring,Oil Cooler Element | Lubrication service | Check fitment → |
| 600-181-9200 | Element Ass'Y,Outer | Scheduled service item | Check fitment → |
| 600-181-9500 | Element Ass'Y | Scheduled service item | Check fitment → |
| 600-181-9600 | Element Ass'Y,(With Tension Pulley Type) | Scheduled service item | Check fitment → |
| 07271-01460 | Hose, Filter To Injection Pump | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D31S-16(S/N 25001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E03 | Parking brake system fault or swing parking brake system discrepancy | Connectivity issues, alignment problems, or mechanical failure in the lever/system | Inspect parking brake connectivity and alignment |
| E10 | Engine controller power failure or engine management system malfunction | Faulty ECM power connections, blown fuses, defective ground wires, or engine stall | Inspect ECM power connections, fuses, and ground wires; examine interfacing points |
| E11 | Engine control system failure causing reduced output power | High coolant temperature, low oil pressure, or restricted air filter | Check coolant temperature, engine oil pressure, and air filter condition |
| E14 | Feedback system abnormalities | Failure within the feedback loop or sensor communication | Verify feedback system integrity and sensor connections |
| E15 | Engine sensor malfunction | Faults in temperature, fuel pressure, or oil pressure sensors | Inspect engine sensors and associated wiring for faults |
| CA122 | Intake air pressure sensor feedback voltage is too high | Malfunctioning intake pressure sensor or wiring fault | Verify the intake pressure sensor and associated wiring |
| CA123 | Intake air pressure sensor feedback voltage is too low | Sensor short circuit or airflow restriction in the intake system | Check for sensor shorts or physical intake obstructions |
| B@BCNS | Engine coolant overheating | Low coolant level, radiator fin blockage, or fan belt failure | Check radiator fins, fan belt, and coolant level |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D31S-16(S/N 25001-UP) attachments & work tools
Blades
Specific blade types (S/SU/A) and VPAT availability are not documented for this exact serial range. Standard bucket capacity is listed at 1.1 yd³ (0.8 m³).
Rippers
Rear ripper configuration is listed as No for this model.
Winches
Winch options and towing winch classes are not documented for this exact serial range.
Drawbars/counterweights
Specific drawbar or counterweight configurations are not documented for this exact serial range.
Cab/ROPS guarding options
Air conditioning and Diesel Particulate Filter (DPF) availability is listed as No. Specific forestry or waste guarding options are not documented.
Hydraulic arrangement notes
Hydraulic system fluid capacity is 5.9 gal (22 L). Front/rear tool hydraulic arrangements are not specified.
All D31S-16(S/N 25001-UP) assemblies by section
Every catalogued assembly group for the Komatsu D31S-16(S/N 25001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
4d105-3c S/N 40138-Up
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Air Intake Connection And Air Cleaner(#40138-56494)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***80 | Bolt, Mount Strainer Flange | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Air Intake Connection And Air Cleaner(#56495-63805)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***80 | Bolt, Mount Strainer Flange | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Air Intake Connection And Air Cleaner(#63806-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***70 | Bolt, Spacer | 2 |
| 01***30 | Bolt, Mount Control Valve | 2 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Alternator
| 60***10 | Alternator A. (25a) | 1 |
| KD***30 | Holder,Brush | 1 |
| KD***72 | Slip Ring Ass'Y | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Alternator (For Trimming Dozer)
| 60***80 | Alternator A. (13a) | 1 |
| KD***30 | Holder,Brush | 1 |
| KD***72 | Slip Ring Ass'Y | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Alternator And Mounting
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
| 01***30 | Bolt,(For Trimming Dozer) | 1 |
| 01***25 | Bolt | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Camshaft And Tappet(#40138-40495)
| 01***18 | Bolt | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Camshaft And Tappet(#40496-)
| 01***18 | Bolt | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Crankshaft
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 02***04 | Plug,(Not Shown) | 4 |
| 04***25 | Key | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Cylinder Block
| 01***22 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 7 |
| 01***65 | Bolt | 3 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Cylinder Head
| 01***16 | Bolt,(For Slag Handling) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 6 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Cylinder Head Cover(#40138-63805)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***50 | Bolt,(For Trimming Dozer) | 8 |
| 01***70 | Bolt | 4 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Cylinder Head Cover(#63806-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***50 | Bolt,(For Trimming Dozer) | 8 |
| 01***70 | Bolt | 4 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Emergency Relay And Resistor
| 60***70 | Switch,Air Intake Heater | 1 |
| 60***60 | Switch,Heater Relay | 1 |
| 61***50 | Resistor | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Exhaust Manifold And Muffler
| 01***20 | Capscrew - M10 | 2 |
| 01***25 | Bolt, Mount Cover | 4 |
| 01***40 | Bolt, Mount Retainer | 8 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Flywheel And Flywheel Housing
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 15 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 5 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 6 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Front Cover
| 01***45 | Bolt,(For Suction? Reversible Fan) | 7 |
| 01***75 | Bolt,(For D57sr) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 9 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Fuel Filter And Mounting
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Fuel Injection Pump (Feed Pump)
| 61***10 | Injection Pump Ass'Y,(See Fig.1451) | 1 |
| DK***00 | Tappet | 1 |
| DK***20 | Housing | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Fuel Injection Pump (Governor) (1/2)
| 61***10 | Injection Pump Ass'Y,(See Fig.1451) | 1 |
| DK***00 | Gasket | 1 |
| DK***00 | Adapter | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Fuel Injection Pump (Governor) (2/2)
| 61***10 | Injection Pump Ass'Y,(See Fig.1451) | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Collar | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Fuel Injection Pump (Pump)
| 61***10 | Injection Pump Ass'Y,(See Fig.1451) | 1 |
| 61***11 | Injection Pump Ass'Y | 1 |
| DK***20 | Plunger Ass'Y | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Fuel Injection Pump And Piping
| 01***25 | Bolt (M6-1.00x25) | 1 |
| 01***35 | Stud | 6 |
| 01***35 | Stud | 4 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Fuel Nozzle And Spill Pipe
| 01***65 | Bolt | 8 |
| 07***12 | Gasket,Mechanical Pump Piping | 6 |
| 61***52 | Bolt, Joint | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Gasket Kit
| 01***23 | Washer,Lock (K2) | 1 |
| 07***65 | O-Ring,Injection Pump Case | 1 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Intake Air Heater(#40138-63805)
| 01***16 | Bolt,(For Slag Handling) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***05 | Nut (Welded) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Lubricating Oil Filter(#40138-52218)
| 01***16 | Bolt,(For Slag Handling) | 8 |
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Lubricating Oil Filter(#52219-)
| 01***16 | Bolt,(For Slag Handling) | 11 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***45 | Bolt,(For Suction? Reversible Fan) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Lubricating Oil Pump
| 01***30 | Bolt,(For France Noise Suppression) | 5 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 5 |
| 01***16 | Washer,Radio Controlled Slag Handling | 5 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Lubricating Oil Strainer
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Oil Pan
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 23 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Piston And Connecting Rod
| 61***14 | Bolt | 2 |
| 61***15 | Bolt,(Service Parts) | 2 |
| 61***22 | Nut,(Service Parts) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Rocker Arm
| 01***12 | Bolt,(Without R.P.C.U.) | 1 |
| 01***80 | Bolt,(Shim 5 Pieces Over) | 4 |
| 01***19 | Washer,(Not Used With Ventilator) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Starting Motor (#42792-..)
| 60***41 | Starting Motor Ass'Y,(See Fig.1545) | 1 |
| 60***42 | Starting Motor A.,(5.5kw) (See Fig.2546) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Starting Motor (1/2)(#..-)
| 60***43 | Starting Motor A.,(5.5kw) (See Fig.0661) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***01 | O-Ring | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Starting Motor (2/2)(#..-)
| KD***01 | Washer,Seal | 3 |
| KD***80 | Shift Lever Ass'Y | 1 |
| KD***30 | Contactor,Moving | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Starting Motor (For Trimming Dozer)
| 60***51 | Starting Motor A | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***80 | Field Coil Ass'Y | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Starting Motor And Mounting
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***36 | Washer, Spring | 3 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Starting Motor(#40138-42791)
| 60***40 | Starting Motor A.,(See Fig.1545) | 1 |
| 60***41 | Starting Motor A.,(See Fig.1545) | 1 |
| 60***42 | Starting Motor A | 1 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Water Pump And Cooling Fan(#40138-47893)
| 01***16 | Bolt,(For Slag Handling) | 3 |
| 01***25 | Bolt,(Without Auto Priming System) | 6 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : 4d105-3c S/N 40138-Up : Water Pump And Cooling Fan(#47894-)
| 01***16 | Bolt,(For Slag Handling) | 3 |
| 01***25 | Bolt,(Without Auto Priming System) | 6 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 8 |
Damper And Transmission
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-Up) : Damper And Transmission : 2nd Housing
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***60 | Bolt | 10 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 10 |
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-Up) : Damper And Transmission : Forward And 3rd Housing
| 04***24 | Pin,Dowel (For No.3 Housing) | 2 |
| 04***12 | Pin, Spring | 3 |
| 04***20 | Ring, Snap | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Damper And Transmission : Inching Pedal(#25001-27164)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Screw | 1 |
| 01***20 | Screw | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Damper And Transmission : Inching Pedal(#27165-)
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
| 01***35 | Screw | 1 |
| 01***20 | Screw | 1 |
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-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-16(S/N 25001-Up) : Damper And Transmission : Selector And Inching Valve(#25001-27164)
| 01***45 | Bolt,(S6d155-4b) | 14 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 1 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 14 |
Komatsu : D31s-16(S/N 25001-Up) : Damper And Transmission : Selector And Inching Valve(#27165-)
| 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-16(S/N 25001-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-16(S/N 25001-Up) : Damper And Transmission : Transmission Control Lever
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Damper And Transmission : Transmission Control Linkage
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 7 |
| 01***05 | Nut? L.H. Thread,R.H. Thread | 2 |
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-Up) : Damper And Transmission : Universal Joint
| 01***40 | Bolt,(For Position Fixing) | 16 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 16 |
| 07***20 | Plug,(D31s) | 1 |
Engine Related Parts And Electrical System
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Battery
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***18 | Bolt | 1 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Electrical System(#25001-28000)
| 01***12 | Bolt,(Without R.P.C.U.) | 2 |
| 01***16 | Bolt,(For Slag Handling) | 3 |
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Electrical System(#28001-)
| 01***12 | Bolt,(Without R.P.C.U.) | 2 |
| 01***16 | Bolt (Welded) | 2 |
| 01***16 | Bolt,(For Slag Handling) | 5 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Engin Mounting Parts
| 01***20 | Bolt,Front (Except Japan) | 4 |
| 07***09 | Clamp,(With Cylinder Cover) | 6 |
| 11***10 | Cushion | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping(#25001-28000)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***30 | Bolt,(For Center Guard) | 3 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping(#28001-)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping? With Additional Fuel Filter (Except Japan)(#25001-28000)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***30 | Bolt,(For Center Guard) | 3 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping? With Fuel Strainer (Except Japan)(#28001-)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Instrument Panel
| 01***16 | Bolt (Welded) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Oil Cooler And Piping(#25001-25002)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Oil Cooler And Piping(#25003-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 11 |
| 01***70 | Bolt, Spacer | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Engine Related Parts And Electrical System : Radiator And Piping
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 10 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 18 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
Guard
Komatsu : D31s-16(S/N 25001-Up) : Guard : Cross Bar(#25001-28000)
| 01***50 | Bolt, Fuel Tank Mounting - Front Left | 36 |
| 01***60 | Flat Washer - M20 (Hardened) | 36 |
| 04***42 | Pin,Dowel? Gear Case Cover | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Engine Bottom Guard
| 01***25 | Bolt | 3 |
| 01***35 | Bolt,(For Pedal Steering) | 16 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Hitch(#25001-28000)
| 01***55 | Bolt, Strut Mounting - To Radiator And Rear Frame | 2 |
| 01***60 | Flat Washer - M20 (Hardened) | 2 |
| 04***12 | Pin,Cotter (For Ripper) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Hitch(#28001-)
| 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-16(S/N 25001-Up) : Guard : Mark And Plate (Chinese)(#25001-28000)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) | 1 |
| 09***03 | Plate? Instruction,Radiator Water Level | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (English)(#25001-28000)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,Machine (Limited Supply) | 1 |
| 09***60 | Plate? Safety,Before Operating (Usa Spec.) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (English)(#28001-28685)
| 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-16(S/N 25001-Up) : Guard : Mark And Plate (English)(#28686-)
| 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-16(S/N 25001-Up) : Guard : Mark And Plate (French)(#25001-28000)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (Ex. France) | 1 |
| 09***01 | Plate? Caution,Fuel Tank Water Drain | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (French)(#28001-28685)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (French) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (French)(#28686-)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
| 09***35 | Plate? Name,(Limited Supply) (French) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (General Spec.) (Except Japan)(#25001-28000)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,Machine (Limited Supply) | 1 |
| 09***01 | Plate? Caution,Fuel Tank? Water Drain | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (German)(#25001-28000)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***70 | Plate? Operating,Bucket Lever | 1 |
| 09***16 | Plate? Operating,Ripper Control Lever Lock | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (German)(#28001-28685)
| 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-16(S/N 25001-Up) : Guard : Mark And Plate (German)(#28686-)
| 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-16(S/N 25001-Up) : Guard : Mark And Plate (Indonesian)(#25001-28000)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,Machine (Limited Supply) | 1 |
| 09***01 | Plate? Caution,Fuel Tank Water Drain | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (Spanish)(#25001-28000)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,Machine (Limited Supply) | 1 |
| 09***01 | Plate? Caution,Fuel Tank Water Drain | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Mark And Plate (Spanish)(#28001-28685)
| 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-16(S/N 25001-Up) : Guard : Mark And Plate (Spanish)(#28686-)
| 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-16(S/N 25001-Up) : Guard : Operator'S Seat(#25001-28000)
| 01***25 | Bolt (M6-1.00x25) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Operator'S Seat(#28001-)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Radiator Guard And Hood
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 21 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Rear Cover And Hydraulic Tank(#25001-28000)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 10 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 30 |
| 01***30 | Bolt,(For France Noise Suppression) | 11 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Rear Cover And Hydraulic Tank(#28001-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 22 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Side Frame And Floor Plate(#25001-28000)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 5 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 25 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Guard : Side Frame And Floor Plate(#28001-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 22 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
Optional Parts
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Battery-Large Capacity(#25001-28000)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 20 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Battery-Large Capacity(#28801-)
| 01***25 | Bolt? Wing | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Bucket Indicator
| 01***09 | Nut,(With Body Positioner) | 2 |
| 01***23 | Washer | 2 |
| 11***10 | Retainer | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Bucket Positioner(#25001-28000)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Bucket Positioner(#28001-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Canopy
| 01***25 | Bolt - Rear Guard Mounting | 8 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***40 | Bolt,(For Center Guard) | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Car Heater (Steel Cab)
| 01***10 | Bolt,(With Auto Emergency Steering) | 1 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Counter Weight For Large Bucket
| 01***55 | Bolt,(With Hook) | 8 |
| 01***16 | Nut - M20 | 2 |
| 01***60 | Washer,(For Large Size Tire) | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Door And Window (L.H.) (Rops Cab)(#25001-28000)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
| 01***08 | Screw, Terminal | 1 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Door And Window (L.H.) (Rops Cab)(#28001-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 1 |
| 01***10 | Screw,(For Wiper Switch Earth) | 6 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Door And Window (R.H.) (Rops Cab)(#25001-28000)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
| 01***08 | Screw, Terminal | 1 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Door And Window (R.H.) (Rops Cab)(#28001-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 1 |
| 01***10 | Screw,(For Wiper Switch Earth) | 6 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Door And Window (Steel Cab)
| 01***12 | Screw,R.H | 2 |
| 01***16 | Screw,(With Ashtray) | 1 |
| 01***12 | Screw | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Electrical System (Steel Cab)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 6 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Electrical System(#25001-28000)
| 01***16 | Bolt (Welded) | 6 |
| 01***12 | Screw,(Additional Sun Visor) | 1 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Electrical System(#28001-)
| 01***16 | Bolt (Welded) | 6 |
| 01***12 | Screw,(Additional Sun Visor) | 1 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Floor Mat (Rops Cab)(#25001-28000)
| 01***10 | Screw,(With Air Conditioner) | 17 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 17 |
| 08***08 | Grommet,(Without Beacon Lamp) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Floor Mat (Rops Cab)(#28001-)
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 12 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 10 |
| 01***19 | Washer | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Front? Rear Window And Floor Mat (Steel Cab)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 7 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 32 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 39 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Front? Rear Window And Seal (Rops Cab)(#25001-28000)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 7 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 12 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Front? Rear Window And Seal (Rops Cab)(#28001-)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 5 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 5 |
| 09***28 | Strip,Weather | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Head Guard(#25001-28000)
| 01***45 | Bolt,(For Slag Handling) | 8 |
| 01***55 | Bolt,(For Long Track) | 4 |
| 01***75 | Bolt,Dust | 20 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Inching Pedal (1/2) (For Brake Linkage Inching Control)(#28001-)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 1 |
| 01***07 | Nut,L.H. Thread (D31s) | 3 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Inching Pedal (2/2) (For Brake Linkage Control)(#28001-)
| 01***35 | Bolt,(For Position Fixing) | 2 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 2 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Large Bucket (1.0m3)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***20 | Bolt | 2 |
| 01***20 | Bolt | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Lift Arm Positioner(#25001-28000)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Lift Arm Positioner(#28001-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Operator'S Seat? With Suspension(#25001-28000)
| 01***25 | Bolt,(For Automatic) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Operator'S Seat? With Suspension(#28001-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
| 11***90 | Hinge (Welded) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Parking Brake Lever (For Brake Linkage Inching Control)(#28001-)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***35 | Bolt,(For Position Fixing) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Perforated Engine Side Cover(#25003-)
| 11***10 | Cover,L.H | 1 |
| 11***20 | Cover,R.H | 1 |
| 13***90 | Knob | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Radiator Grille? Jungle Specification(#25003-28000)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Radiator Grille? Jungle Specification(#28001-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Rops Cab And Mounting(#25001-28000)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***40 | Bolt,(With Center Guard) | 16 |
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 12 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Rops Cab And Mounting(#28001-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***40 | Bolt,(With Center Guard) | 16 |
| 01***45 | Bolt,(For Travel Motor) (Not Show) | 18 |
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-Up) : Optional Parts : Snow Bucket (1.0m3)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(For Rubber Shoe) | 15 |
| 01***35 | Bolt, Hydraulic Tank Mounting | 10 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Steel Cab And Mounting
| 01***35 | Bolt, Hydraulic Tank Mounting | 8 |
| 01***40 | Bolt,(With Center Guard) | 8 |
| 01***60 | Bolt,(For Ripper) | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Steering Control Lever (1/4)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 12 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Screw | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Steering Control Lever (2/4)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***06 | Nut? L.H. Thread,L.H. Thread (For Chinese) | 4 |
| 01***10 | Nut,(Without Air Conditioner) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Steering Control Lever (3/4)(#25001-28000)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***35 | Bolt,(For Position Fixing) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Steering Control Lever (3/4)(#28001-)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***35 | Bolt,(For Position Fixing) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Steering Control Lever (4/4)(#25001-28000)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***18 | Plug,(With Extinguisher) (D31p) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Steering Control Lever (4/4)(#28001-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
| 07***18 | Plug,(With Extinguisher) (D31p) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Steering Pedal And Linkage(For Brake Linkage Inching Control(#28001-)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 12 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Strengthened Lower Guard(#25003-)
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 18 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 18 |
| 07***18 | Plug,(With Extinguisher) (D31p) | 6 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Swing Drawber(#25003-)
| 01***55 | Bolt, Strut Mounting - To Radiator And Rear Frame | 14 |
| 01***60 | Washer | 14 |
| 04***12 | Pin,Cotter (For Ripper) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Vandalism Protection(#25001-28000)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 3 |
Komatsu : D31s-16(S/N 25001-Up) : Optional Parts : Vandalism Protection(#28001-)
| 01***23 | Plain Washer | 1 |
| 07***20 | Cap Ass'Y,(For Vandalism Protection) | 1 |
| 09***00 | Lock,(With Vandalism Protection) | 1 |
Steering System And Final Drive
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-Up) : Steering System And Final Drive : Brake Band
| 01***35 | Bolt,(For Pedal Steering) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 8 |
| 01***23 | Washer | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Final Drive Gear
| 01***30 | Bolt,(For France Noise Suppression) | 36 |
| 01***20 | Bolt,(Used When Towing Winch) | 4 |
| 01***08 | Screw | 8 |
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-Up) : Steering System And Final Drive : Parking Brake Lever(#25001-28000)
| 01***12 | Bolt,(Without R.P.C.U.) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***35 | Bolt,(Without Auto Priming System) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Parking Brake Lever(#28001-)
| 01***12 | Bolt,(Without R.P.C.U.) | 2 |
| 01***35 | Bolt,(Without Auto Priming System) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Sprocket And Shaft
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 8 |
| 01***13 | Nut - Cylinder Mounting | 24 |
| 01***36 | Washer,Radio Controlled Slag Handling | 8 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Steering Case And Main Frame
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 30 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 38 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Steering Case Cover(#25001-28000)
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 38 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Steering Case Cover(#28001-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 26 |
| 01***65 | Bolt,(For Suction Fan)(4d130-1d) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Steering Clutch
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***05 | Bolt (M10-1.50x105) | 8 |
| 01***10 | Nut,(For Slag Handling) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Steering Pedal And Linkage
| 01***12 | Bolt,(Without R.P.C.U.) | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
Komatsu : D31s-16(S/N 25001-Up) : Steering System And Final Drive : Steering Valve And Piping
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
Tool And Kit
Komatsu : D31s-16(S/N 25001-Up) : Tool And Kit : Kit
| 01***12 | Washer,Holder | 1 |
| 01***20 | Nut,Shoe (Kit) | 200 |
| 04***10 | Lock,Holder | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Tool And Kit : Spare Parts And Accessory Table (Except Japan)(#25001-28000)
| 04***50 | V-Belt,(For Large Pulley) | 1 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***22 | O-Ring,(See Fig.Y1852-01a0) | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Tool And Kit : Tool(#25001-28000)
| 07***00 | Pump,Grease | 1 |
| 07***00 | Cartridge,Grease | 1 |
| 07***22 | Nozzle, Grease Pump | 1 |
Track
Komatsu : D31s-16(S/N 25001-Up) : Track : Carrier Roller
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***40 | Bolt,(Not Used With Cab) | 8 |
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-Up) : Track : Recoil Spring
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***40 | Bolt,(For Center Guard) | 20 |
| 01***45 | Bolt,(For Slag Handling) | 20 |
Komatsu : D31s-16(S/N 25001-Up) : Track : Track Frame(#25001-28000)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 30 |
| 01***30 | Bolt,(For Center Guard) | 16 |
| 01***40 | Bolt,(For Center Guard) | 60 |
Komatsu : D31s-16(S/N 25001-Up) : Track : Track Frame(#28001-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***30 | Bolt,(For Center Guard) | 16 |
| 01***40 | Bolt,(For Center Guard) | 52 |
Komatsu : D31s-16(S/N 25001-Up) : Track : Track Roller
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***45 | Bolt,(For Slag Handling) | 40 |
| 01***50 | Bolt, Radiator To Frame | 40 |
Komatsu : D31s-16(S/N 25001-Up) : Track : Track Shoe (Lubricate Type)(#29001-)
| 01***11 | Nut,(For Center Guard) | 148 |
| 01***42 | Washer,Spring (For Pedal Steering) | 148 |
| 01***20 | Nut,Shoe (Kit) | 330 |
Komatsu : D31s-16(S/N 25001-Up) : Track : Track Shoe (Master Pin Type)(#25001-29000)
| 01***11 | Nut,(For Center Guard) | 148 |
| 01***42 | Washer,Spring (For Pedal Steering) | 148 |
| 01***20 | Nut,Shoe (Kit) | 346 |
Komatsu : D31s-16(S/N 25001-Up) : Track : Track Shoe (Master Pin Type)(#29001-)
| 01***11 | Nut,(For Center Guard) | 148 |
| 01***42 | Washer,Spring (For Pedal Steering) | 148 |
| 01***20 | Nut,Shoe (Kit) | 346 |
Work Equipment
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment : Bucket
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***20 | Bolt | 2 |
| 01***20 | Bolt | 2 |
Komatsu : D31s-16(S/N 25001-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-16(S/N 25001-Up) : Work Equipment Control System : Bucket Control Lever
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Bucket Dump Cylinder
| 01***11 | Nut,(With Under Mirror) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 04***25 | Ring, Snap | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Bucket Lift Cylinder
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 01***16 | Washer,(For Shipping Parts) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Control Valve (1/2)
| 01***20 | Screw | 2 |
| 01***25 | Bolt, Seal Cover Mounting | 4 |
| 01***30 | Bolt | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Control Valve (2/2)(#25001-28000)
| 01***40 | Bolt,See Fig. K4010-64a0 | 2 |
| 01***05 | Nut (Welded) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Control Valve (2/2)(#28001-)
| 01***40 | Screw | 2 |
| 01***05 | Nut (Welded) | 1 |
| 07***32 | O-Ring,Drain Plug? Main Clutch | 1 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Filter And Piping(#25001-28000)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***70 | Bolt, Spacer | 2 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Filter And Piping(#28001-29140)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 7 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Filter And Piping(#29141-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 7 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 10 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Pump-Valve)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Valve-Dump Cylinder)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 5 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Valve-Lift Cylinder)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***11 | Nut,(With Under Mirror) | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
Komatsu : D31s-16(S/N 25001-Up) : Work Equipment Control System : Hydraulic Pump
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
| 04***18 | Ring, Snap | 1 |
D31S-16(S/N 25001-UP) serial number reference
The serial number plate is typically located on the front frame casting, near the operator's left side or radiator support. On older models, it may also be found in the cab behind the driver's seat. Read the model designation (e.g., D31S-16) and the sequential serial number (e.g., 25001-UP) from the plate. Cross-check the serial range against the service manual cover to ensure the correct variant (D31S vs D31Q vs D31A) is selected, as parts may differ between these closely related models.
| Prefix | Identifies | Notes |
|---|---|---|
| D | D31S-16 (S/N 25001-UP) | Identifies the crawler dozer family. The numeric portion encodes the size class. The 'S' suffix denotes the specific model variant within the D3LE series. Serial numbers for this configuration begin at 25001. |
Frequently asked questions
What engine is used in the Komatsu D31S-16?
The machine is powered by a Komatsu 4D105-5 diesel engine, providing approximately 63 hp (47 kW) of net power.
What is the operating weight of this model?
The operating weight for the D31S-16 is approximately 14,726.9 lb (6,680 kg).
What model replaced or succeeded this machine?
Specific successor models are not explicitly listed in the provided documentation; however, it belongs to a lineage of D-series crawler loaders including the D31Q-16.
What D31S-16(S/N 25001-UP) owners discuss
What are the common transmission and steering issues reported for the D31S-16?
Operators report instances of the machine losing pulling power on one side due to low transmission fluid. The transmission pump may become airlocked, particularly after long periods of inactivity, which can cause slipping or soft steering brakes. Steering pedal return issues have been noted following clutch replacement, and some units exhibit a failure to turn left even after adjusting steering brakes.
What engine is used in the Komatsu D31S-16 (S/N 25001-UP) and what are its primary specs?
The machine is powered by a Komatsu 4D105-5 engine. It features a displacement of 264 cu in, producing 63 hp net power.
What undercarriage and dimension specifications are standard for this model?
The machine has a track shoe width of 13 in (3แปลง mm) and a track gauge of 57.09 in (1,448.75 mm). The transport width is 1.79 m (5.87 ft), and the ground pressure is approximately 0.66 kg/cm² (9.4 psi).
What should be checked regarding the cooling system and fluid appearance?
If engine oil appears milky, it may indicate coolant contamination, even if no oil is visible in the coolant reservoir. The cooling system fluid capacity is approximately 5.9 gal (22.33 L). Always verify any signs of internal leaks with a dealer.
What are common blade and hydraulic component failures observed?
Users have reported issues with the blade failing to tilt to the left, potentially caused by a bending knuckle-type tilt rod. Additionally, angle cylinders may fail to hold the blade position correctly.
What is the most critical check when purchasing a used D31S-16 (S/N 25001-UP)?
Verify the serial number on the chassis plate against the engine block and any provided documentation. A mismatch between the riveted plate and the engraved frame is a primary indicator of stolen or tamelle equipment. Additionally, check for transmission pump shaft seal leaks, as a bad seal can cause the pump to suck air.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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