Komatsubulldozermedium (d40 - d75)
Komatsu D41Q-3(S/N 6001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu D41Q-3 (S/N 6001-UP) is a mid-size crawler bulldozer engineered for versatile earthmoving applications. Produced between 1988 and 19SS, this machine features a Komatsu 6D105-1 engine delivering approximately 89.8 hp (67 kW). It operates within a weight class of roughly 24,912 lb (11.3 t) and utilizes a 560 mm (22 in) track width. The D-series lineage includes various configurations such as the D41S and D41P variants.
The D41Q-3 represents a specific generation within the Komatsu D-series, characterized by mechanical reliability prior to modern emissions-heavy architectures. In the used equipment market, this model remains significant due to straightforward maintenance requirements and the availability of robust components like the 6D105-1 engine. Its presence in the secondary market is driven by suitability for light construction, land clearing, and utility work where high-capacity mining dozers are not required.
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 D41Q-3(S/N 6001-UP) specifications
Engine
| Engine Model | Komatsu 6D105-1 |
| Net Power | 89.8 hp (67 kW) |
| Engine Speed at Max Torque | 2,350 rpm |
| Displacement | 6.49 L (396.1 cu in) |
Weights
| Operating Weight | 11,300 kg (24,912 lb) |
Dimensions
| Transport Length | 4.815 m (15.8 ft) |
| Transport Width | 2.32 m (7.61 ft) |
| Transport Height | 3.015 m (9.89 ft) |
| Track Width | 560 mm (22 in) |
Performance
| Travel Speed | 7.6 km/h (4.72 mph) |
| Soil Pressure | 0.49 kg/cm² |
Service Capacities
| Cooling System Fluid Capacity | 33 L (8.8 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D41Q-3(S/N 6001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine Crankcase (w/ filter) | Not specified | Komatsu Genuine Diesel Engine Oil (meets Komatsu Engineering Standard) |
| Cooling System | Not specified | Komatsu Super Coolant |
| Transmission/Powertrain (Powershift Transmission + Bevel Gear/Steering) | 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 D41Q-3(S/N 6001-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 D41Q-3(S/N 6001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize oil wear analysis at 500-hour intervals to monitor engine and hydraulic health. Regular hydraulic oil sampling at 1,000 hours is critical for detecting internal component degradation. For the D41Q-3, monitoring coolant SCA levels during 500-hour services prevents engine corrosion. These analyses allow for identifying wear before catastrophic failure occurs in the powertrain or hydraulic circuits.
Corrective & Common Repairs
Monitor blade lift cylinders for seal leaks; replacement kits are available for the 110 mm bore/60 mm rod configuration. Inspect the undercarriage frequently, specifically checking track tension and shoe wear. If steering performance degrades when operating temperature rises, investigate potential hydraulic pump or solenoid valve issues within the HST system. Always verify part compatibility using the machine plate serial number.
Overhaul & Rebuild Points
Major service milestones include a 2,000-hour transmission service and hydraulic oil replacement. During engine overhauls, focus on the Komatsu 6D105-1 assembly, specifically inspecting the turbocharger and valve train adjustments. Structural inspections at 1,000 hours should evaluate the front frame casting and blade attachment points for fatigue or stress cracks to ensure long-term chassis integrity.
Seasonal & Environment Servicing
In high-dust environments, increase frequency of air filter inspections and cleaning. For cold-weather operations, ensure the engine cooling system is properly prepared with appropriate antifreeze concentrations. During seasonal transitions, perform a comprehensive undercarriage cleaning to remove packed debris from the 560 mm tracks, preventing premature wear on rollers and idlers caused by abrasive buildup.
D41Q-3(S/N 6001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-9100 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| (6136-71-6100) | Fuel Filter Ass'Y,(See Fig.408) | Fuel system service | Check fitment → |
| 09019-08035 | Wrench,Filter (For Add. Fuel Filter) | Fuel system service | Check fitment → |
| 09637-02161 | Plate? Instruction,Air Cleaner (Double Element) | Air intake service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D41Q-3(S/N 6001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E03 | Safety lever system discrepancy | Lever connectivity or alignment issues | Inspect safety lever connectivity and alignment |
| E10 | Engine controller power failure or engine control drive system circuit malfunction (engine stall) | Power loss to controller or circuit fault | Check engine controller power supply and control circuits |
| E11 | Engine control system failure | System malfunction causing decrease of output power to protect the engine | Inspect engine control system components |
| E15 | Engine sensor fault | Fault in temperature, fuel pressure, or oil pressure sensors | Verify integrity of engine temperature, fuel, and oil pressure sensors |
| E20 | Hydraulic return filter challenge | Filter clogging or restriction | Perform comprehensive filter cleaning or overhaul |
| AA10NX | Air cleaner clogging | Excessive dust accumulation in air intake | Inspect and clean/replace air filter |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D41Q-3(S/N 6001-UP) attachments & work tools
Blades
Blade types and specific configurations for S/SU/A or VPAT are not documented for this exact serial range. Available parts catalogs confirm work equipment components exist but do not list width or capacity specifications.
Rippers
Multi-shank parallelogram style rippers are available, featuring a single cylinder design. Options include single/multi-ripper configurations, stump rippers, frost rippers, and high-hardness hard rock rippers. A complete set includes the structure, three shanks with teeth, one cylinder, and hoses. Unit weight is approximately 1930 kg (4255 lb) for a specific multi-shank configuration.
Winches
Specific winch classes or towing winch options are not documented for the D41Q-3(S/N 6001-UP).
Drawbars/counterweights
Specific dimensions or availability for drawbars and counterweights are not specified for this model.
Cab/ROPS guarding options
Information regarding specific forestry or waste configuration guarding is not documented for this exact serial range. The machine utilizes a 6D105-1N engine and includes track guards as part of the undercarriage.
Hydraulic arrangement notes
The machine features a hydraulic system suitable for heavy loads. Specific arrangements for front or rear tool hydraulics are not detailed, though cylinder rebuild kits for blade lift cylinders are available with 110 mm (4.33 in) bore and 60 mm (2.36 in) rod diameters.
All D41Q-3(S/N 6001-UP) assemblies by section
Every catalogued assembly group for the Komatsu D41Q-3(S/N 6001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
6d105-1n S/N 15149-Up
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Additional Fuel Filter
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
| 60***00 | Fuel Filter Ass'Y | 1 |
| 60***20 | Cartridge,Pref | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Air Cleaner And Mounting
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 13 |
| 01***30 | Bolt,(For France Noise Suppression) | 7 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 6 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Air Intake Manifold And Connection
| 01***20 | Bolt | 2 |
| 01***50 | Bolt,(For Trimming Dozer) | 2 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 10 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator (13a)(#63408-)
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator (25a)(#15149-68686)
| 60***51 | Alternator A. (25a) | 1 |
| KD***52 | Bolt,Through | 3 |
| KD***70 | Rear Bracket Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator (25a)(#68687-)
| 60***30 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***11 | Rear Bracket Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator (35a) (Hardening Pulley Type)
| 60***40 | Alternator A. (35a) | 1 |
| KD***31 | Bushing,Insulator | 2 |
| KD***57 | Bearing,Ball? Front | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator (50a)(#50001-)
| 60***40 | Alternator A. (50a),(With Non Hardening Pulley) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator And Mounting (13a)(#63408-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For Trimming Dozer) | 1 |
| 01***11 | Nut,(For Center Guard) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator And Mounting (25a)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt | 1 |
| 01***30 | Bolt,(For Trimming Dozer) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator And Mounting (35a) (Hardening Pulley Type)
| 01***65 | Bolt,(For Alternator Bracket Mount) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***70 | Bolt,(With Wear Guard) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Alternator And Mounting (50a)(#50001-)
| 01***65 | Bolt,(For Alternator Bracket Mount) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
| 01***70 | Bolt,(With Wear Guard) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Camshaft And Tappet
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Corrosion Resistor
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 5 |
| 01***29 | Washer,Spring (Cold Weather Spec.) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Crankshaft
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
| 61***11 | Bolt,Nylock (K2) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Cylinder Block(#15149-49999)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***75 | Bolt,(For 75a Alternator) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Cylinder Block(#50001-)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***75 | Bolt,(For 75a Alternator) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Cylinder Head
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 07***08 | Plug,(Without Oil Pressure Switch) | 7 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Cylinder Head Cover(#15149-79362)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***08 | Nut (Welded) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Cylinder Head Cover(#79363-)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***08 | Nut (Welded) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Engine Support
| 01***40 | Bolt,(Dust And Dirt Protection) | 8 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 8 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Exhaust Manifold
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***60 | Bolt (M10-1.50x60) | 1 |
| 01***00 | Bolt (M10-1.50x100) | 12 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Flywheel And Flywheel Housing
| 01***40 | Bolt,(Dust And Dirt Protection) | 9 |
| 01***60 | Bolt, Trunnion Cap | 2 |
| 01***35 | Screw | 6 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Front Cover
| 01***22 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***60 | Bolt,(Without Alternator Bracket) | 10 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Filter
| 07***12 | Gasket,Mechanical Pump Piping | 1 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 1 |
| 60***10 | Plug,(For Shipping) (Not Shown) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Coupling)(#15149-49999)
| DK***00 | Bolt | 6 |
| DK***00 | Bolt | 1 |
| DK***30 | Coupling Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Coupling)(#50001-)
| DK***00 | Bolt | 1 |
| DK***00 | Washer,Lock | 2 |
| DK***00 | Coupling,Cross | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Feed Pump)(#15149-49999)
| DK***00 | Spring,Piston | 1 |
| DK***20 | Piston | 1 |
| DK***40 | Feed Pump Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Feed Pump)(#50001-)
| DK***20 | Bolt, Joint | 1 |
| DK***20 | Pump,Priming | 1 |
| DK***20 | Housing | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Governor) (1/2)(#15149-49999)
| DK***00 | Adapter | 1 |
| DK***20 | Capsule,Spring | 1 |
| DK***80 | Nut | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Governor) (1/2)(#50001-)
| DK***80 | Governor Ass'Y,(High Altitude Spec.) | 1 |
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Governor) (2/2)(#15149-49999)
| DK***70 | Bolt | 2 |
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Governor) (2/2)(#50001-)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
| DK***40 | Bolt | 2 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Pump) (1/2)(#15149-49999)
| 61***11 | Injection Pump Ass'Y | 1 |
| DK***30 | Bearing | 2 |
| DK***20 | Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm | 0 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Pump) (1/2)(#50001-)
| 61***10 | Injection Pump Ass'Y | 1 |
| 61***50 | Injection Pump Ass'Y,(High Altitude Spec.) | 1 |
| 61***60 | Injection Pump Ass'Y,(Europe Spec.) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Pump) (2/2)(#15149-49999)
| DK***00 | Sleeve,Control | 6 |
| DK***00 | Screw | 6 |
| DK***00 | Spring | 6 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump (Pump) (2/2)(#50001-)
| DK***00 | Sleeve,Control | 6 |
| DK***00 | Holder,Delivery Valve | 6 |
| DK***00 | Screw | 6 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Injection Pump And Piping
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***70 | Bolt | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Nozzle And Spill Pipe(#15149-49999)
| 01***55 | Bolt,(For Trimming Dozer) | 12 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 12 |
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Fuel Nozzle And Spill Pipe(#50001-)
| 01***55 | Bolt,(For Trimming Dozer) | 12 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 12 |
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Gasket Kit
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 07***45 | O-Ring,(F4320-61a0 -16 ), O-Ring; Was 07000-02145 | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Lubricating Oil Cooler(#15149-49999)
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***35 | Bolt,(Without Auto Priming System) | 16 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Lubricating Oil Cooler(#50001-)
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***35 | Bolt,(Without Auto Priming System) | 16 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Lubricating Oil Filter And Mounting
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***35 | Bolt,(Without Auto Priming System) | 1 |
| 01***90 | Bolt | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Lubricating Oil Pump And Suction Pipe(#15149-49999)
| 01***25 | Bolt,(Without Auto Priming System) | 3 |
| 01***50 | Bolt,(For Trimming Dozer) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Lubricating Oil Pump And Suction Pipe(#50001-)
| 01***25 | Bolt,(Without Auto Priming System) | 3 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***40 | Bolt,(For Position Fixing) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Muffler
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***11 | Nut (M14-1.50 Thd), Nut; Was 01582-01411 | 2 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Oil Pan : Unit_02_of_02
| 01***22 | Bolt,(Cold Terrain Spec.) | 29 |
| 01***25 | Bolt,(Without Auto Priming System) | 10 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Oil Pan : Unit_01_of_02
| 01***22 | Bolt,(Cold Terrain Spec.) | 29 |
| 01***25 | Bolt,(Without Auto Priming System) | 10 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Piston And Connecting Rod
| 04***18 | Ring, Retaining | 2 |
| 61***12 | Piston Ass'Y | 6 |
| 61***30 | Piston Ring Ass'Y | 6 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Regualtor And Heater Signal
| 60***70 | Switch,Air Intake Heater | 1 |
| 60***60 | Switch,Heater Relay | 1 |
| 60***71 | Signal,Signal | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Rocker Arm
| 01***80 | Bolt,(Shim 5 Pieces Over) | 2 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 12 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Starting Motor (5.5kw) (Dust And Water Proof Type)
| 60***51 | Starting Motor Ass'Y,(5.5kw) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***60 | Metal,Center | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Starting Motor (5.5kw)(#15149-81558)
| 60***43 | Starting Motor A.,(5.5kw) (See Fig.0661) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***60 | Metal,Center | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Starting Motor (5.5kw)(#81559-)
| 60***80 | Starting Motor Ass'Y,(5.5kw) | 1 |
| KD***30 | Bracket,Center | 1 |
| KD***50 | Clutch Ass'Y,Over Running | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Starting Motor (7.5kw) (Bad Check And Large Capacity Type)
| 60***10 | Starting Motor Ass'Y,(7.5kw) | 1 |
| KD***80 | Washer Ass'Y,(Not Shown) | 1 |
| KD***90 | Field Coil Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Starting Motor (7.5kw) (For Large Capacity Type)
| 60***81 | Starting Motor Ass'Y,7.5kw | 1 |
| KD***70 | Center Bracket A | 1 |
| KD***90 | Field Coil Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Starting Motor And Mounting
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Tool
| 09***35 | Wrench,Filter (For Add. Fuel Filter) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Water Pump And Cooling Fan
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 6 |
Komatsu : D41q-3(S/N 6001-Up) : 6d105-1n S/N 15149-Up : Water Separator
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 60***00 | Water Separator A.,(4d105-5h? 4d105-5t) | 1 |
| 60***60 | Plug,Drain (4d105-5h? 4d105-5t) | 1 |
Damper And Transmission
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : 1st Housing
| 01***30 | Bolt,(For Trimming Dozer) | 6 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
| 04***30 | Ring, Snap | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : 2nd Housing
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 4 |
| 04***16 | Pin, Spring | 3 |
| 09***20 | Washer,Thrust | 6 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Damper(#6001-6814)
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***45 | Bolt,(For Suction? Reversible Fan) | 12 |
| 01***45 | Bolt | 6 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Damper(#6815-)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 12 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 12 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Forward And 3rd Housing
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***16 | Pin, Spring | 3 |
| 04***15 | Ring,Back-Up | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Inching Pedal
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Inching Pedal Linkage
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
| 01***20 | Bolt,(Used When Towing Winch) | 2 |
| 01***50 | Screw | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Output Shaft
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 12 |
| 01***36 | Washer,Radio Controlled Slag Handling | 16 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Power Take Off
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 4 |
| 01***60 | Screw | 1 |
| 01***36 | Washer,Radio Controlled Slag Handling | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Reverse Housing
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***16 | Pin, Spring | 3 |
| 04***25 | Ring, Retaining | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Transmission Case And Filler
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***65 | Bolt,(For Suction Fan)(4d130-1d) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Transmission Control Lever
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 3 |
| 01***20 | Bolt,(Used When Towing Winch) | 3 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Transmission Control Linkage
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
| 01***35 | Bolt,Adjusting | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Transmission Control Valve (1/2)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 7 |
| 01***55 | Bolt,(For Trimming Dozer) | 6 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Transmission Control Valve (2/2)(#6001-6199)
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***80 | Bolt,(See Fig.0131) | 5 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Transmission Control Valve (2/2)(#6200-)
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***80 | Bolt,(See Fig.0131) | 5 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Damper And Transmission : Universal Joint
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 8 |
| 12***61 | Bearing,Needle | 2 |
| 12***71 | Fitting,Grease | 1 |
Engine Related Parts And Electrical System
Komatsu : D41q-3(S/N 6001-Up) : Engine Related Parts And Electrical System : Battery
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***20 | Bolt,(Used When Towing Winch) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2)
| 01***16 | Bolt (Welded) | 2 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 3 |
Komatsu : D41q-3(S/N 6001-Up) : Engine Related Parts And Electrical System : Electrical System (2/2)
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***20 | Bolt,Front (Except Japan) | 2 |
| 01***45 | Bolt | 2 |
| 01***30 | Bolt,(For 187kg And 155kg) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***85 | Bolt,Front | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Engine Related Parts And Electrical System : Instrument Panel
| 01***16 | Bolt (Welded) | 2 |
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Engine Related Parts And Electrical System : Radiator And Piping
| 01***16 | Bolt,(For Slag Handling) | 8 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
Guard
Komatsu : D41q-3(S/N 6001-Up) : Guard : Equalizer Bar
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 1 |
| 01***35 | Bolt,(For Pedal Steering) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Fender And Rear Cover
| 01***25 | Bolt - Rear Guard Mounting | 15 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 5 |
| 01***55 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Floor Plate
| 01***25 | Bolt - Rear Guard Mounting | 17 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Mark And Plate? (French)
| 04***60 | Screw, Serial Number Plate | 6 |
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Mark And Plate? (German)
| 04***60 | Screw, Serial Number Plate | 6 |
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Marks And Plates (English)
| 04***60 | Screw, Serial Number Plate | 6 |
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 08***01 | Indicator,Dust (Japanese And English) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Operator'S Seat
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***20 | Bolt,(Used When Towing Winch) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Operator'S Seat (With Oil Damper? Reclining Device)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 9 |
| 01***20 | Bolt,(Used When Towing Winch) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Radiator Guard And Hood
| 01***25 | Bolt - Rear Guard Mounting | 5 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 22 |
| 01***40 | Bolt,(For Center Guard) | 6 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Rear Frame Box
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***25 | Bolt - Rear Guard Mounting | 16 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 3 |
Komatsu : D41q-3(S/N 6001-Up) : Guard : Under Guard
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***30 | Screw | 14 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
Optional Parts
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Air Conditioner (1/2)
| 01***10 | Bolt, Mount Flasher | 4 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 8 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Air Conditioner (2/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***60 | Bolt (M10-1.50x60) | 18 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Air Conditioner Compressor Ass'Y
| 04***20 | Ring, Snap | 1 |
| 14***00 | Compressor Ass'Y | 1 |
| 14***10 | Compressor Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Air Conditioner Condenser Ass'Y
| 01***65 | Bolt,R.H | 4 |
| 01***04 | Nut,(For Air Conditioner Less) | 3 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Air Conditioner Grille Ass'Y
| 14***60 | Wire | 1 |
| 14***50 | Cable | 1 |
| 14***60 | Cable | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Air Conditioner Piping
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 13 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***11 | Nut,(Not Shown) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Air Conditioner Unit Ass'Y
| 14***40 | Grommet | 2 |
| 14***01 | Unit Ass'Y | 1 |
| 14***02 | Unit Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Air Duct
| 01***20 | Bolt,(Large Capacity Type) (Std) | 11 |
| 01***12 | Screw,R.H | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Back-Up Alarm Bracket
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***45 | Bolt | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Canopy
| 01***35 | Bolt,(For Pedal Steering) | 8 |
| 01***50 | Screw | 4 |
| 01***45 | Screw | 8 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Compressor System
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***45 | Bolt,(S6d155-4b) | 6 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 6 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Control Box
| 01***10 | Screw,(For Lighter) | 4 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 2 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Fuel Tank With Additional Fuel Strainer
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Head Guard
| 01***35 | Bolt | 24 |
| 01***45 | Bolt,(For Slag Handling) | 16 |
| 01***55 | Bolt,(For Long Track) | 12 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Mount Cushion And Floor Mat
| 01***30 | Bolt,Radio Controlled Slag Handling | 16 |
| 01***45 | Bolt,(For Slag Handling) | 16 |
| 01***22 | Nut (Op) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Operator'S Seat With Oil Damper
| 01***20 | Bolt,(Large Capacity Type) (Std) | 9 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***10 | Nut,(Without Air Conditioner) | 8 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Reinforced Mask
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
| 01***36 | Washer,Radio Controlled Slag Handling | 8 |
| 12***91 | Plate | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Reinforced Under Guard With Front Hook
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***40 | Bolt,(For Center Guard) | 8 |
| 01***50 | Bolt, Radiator To Frame | 6 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Roof Lining
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 14 |
| 01***10 | Screw,(With Air Conditioner) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Rops Bracket
| 01***50 | Bolt | 2 |
| 01***35 | Bolt | 8 |
| 01***40 | Bolt,(For Center Guard) | 12 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Rops Cab (1/3)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 22 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Rops Cab (2/3)
| 01***20 | Bolt | 4 |
| 01***40 | Bolt | 4 |
| 01***16 | Bolt,(For Slag Handling) | 8 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Rops Cab (3/3)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 4 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 21 |
| 01***16 | Screw,(With Ashtray) | 28 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Rops Cab Electric
| 01***16 | Bolt (Welded) | 9 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 12 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Rops Canopy(#6001-.)
| 01***25 | Bolt - Rear Guard Mounting | 14 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 30 |
| 01***55 | Bolt,(For Long Track) | 16 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Vandalism Protection
| 07***20 | Cap Ass'Y,(For Vandalism Protection) | 1 |
| 07***00 | Cap, Locking - Hydraulic Tank Oil Filler Cap | 1 |
| 09***00 | Lock,(With Vandalism Protection) | 5 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts : Window Washer System
| 01***16 | Bolt (Welded) | 6 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
| 01***19 | Washer,(Not Used With Ventilator) | 6 |
Optional Parts (Special Application Parts)
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Bucket Control Lever (Noise Suppression For Ec)(#6840-)
| 01***20 | Bolt | 4 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Fender And Rear Cover (Noise Suppression For Ec)(#6840-)
| 01***25 | Bolt - Rear Guard Mounting | 15 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 5 |
| 01***55 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Floor Plate (Noise Suppression For Ec)(#6840-)
| 01***25 | Bolt - Rear Guard Mounting | 17 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Mount Cushion And Floor Mat (Noise Suppression For Ec)(#6840-)
| 01***30 | Bolt,Radio Controlled Slag Handling | 16 |
| 01***45 | Bolt,(For Slag Handling) | 16 |
| 01***22 | Nut (Op) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Operator'S Seat (Noise Suppression For Ec)(#6840-)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***20 | Bolt,(Used When Towing Winch) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Radiator And Piping (Noise Suppression For Ec)(#6840-)
| 01***16 | Bolt,(For Slag Handling) | 8 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Radiator Guard And Hood (Noise Suppression For Ec)(#6840-)
| 01***55 | Bolt,(For Suction? Reversible Fan) | 10 |
| 01***25 | Bolt - Rear Guard Mounting | 5 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 18 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Rear Frame Box (Noise Suppression For Ec)(#6840-)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***25 | Bolt - Rear Guard Mounting | 16 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 3 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Rops Bracket (Noise Suppression For Ec)(#6840-)
| 01***35 | Bolt | 8 |
| 01***40 | Bolt,(For Center Guard) | 12 |
| 01***50 | Bolt, Radiator To Frame | 12 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Rops Canopy (Noise Suppression For Ec)(#6840-)
| 01***25 | Bolt - Rear Guard Mounting | 14 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 16 |
| 01***55 | Bolt,(For Long Track) | 16 |
Komatsu : D41q-3(S/N 6001-Up) : Optional Parts (Special Application Parts) : Under Guard (Noise Suppression For Ec)(#6840-)
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***30 | Screw | 6 |
| 01***40 | Bolt,(With Center Guard) | 6 |
Steering System And Final Drive
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Bevel Gear And Shaft
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***11 | Nut,(For Center Guard) | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Bevel Pinion
| 01***30 | Bolt,Radio Controlled Slag Handling | 6 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
| 06***15 | Bearing,Roller | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Brake Band
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***40 | Bolt,(For Center Guard) | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Final Drive Gear
| 01***30 | Bolt,(For France Noise Suppression) | 24 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 12 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Final Drive Housing
| 01***40 | Bolt,(Not Used With Cab) | 50 |
| 01***70 | Bolt,(With Wear Guard) | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 50 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Oil Cooler Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 10 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 3 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Parking Brake Lever
| 01***40 | Bolt,(For Position Fixing) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
| 01***25 | Bolt - Rear Guard Mounting | 3 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Sprocket And Shaft
| 01***40 | Bolt,(Not Used With Cab) | 8 |
| 01***70 | Bolt - Thrust Plate Mounting | 12 |
| 01***55 | Bolt, Strut Mounting - To Radiator And Rear Frame | 8 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Steering Case And Main Frame
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***25 | Bolt,(For Slag Handling) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Steering Case Cover
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
| 01***40 | Bolt,(Not Used With Cab) | 19 |
| 01***20 | Bolt | 4 |
Komatsu : D41q-3(S/N 6001-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 : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Steering Control Linkage
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***08 | Nut? L.H. Thread,L.H. Thread | 2 |
| 01***10 | Nut,(Without Air Conditioner) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Steering Control Valve
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 1 |
| 01***80 | Bolt,(Shim 5 Pieces Over) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Steering Filter
| 01***30 | Bolt,Radio Controlled Slag Handling | 3 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
| 01***36 | Washer,Radio Controlled Slag Handling | 5 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Steering Oil Piping
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***40 | Bolt,(For Position Fixing) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Steering Pedal
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 8 |
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Steering System And Final Drive : Steering Pump
| 04***18 | Ring, Retaining | 1 |
| 70***10 | Pump Ass'Y,(Sar040) | 1 |
| 70***10 | Seal, Oil | 1 |
Tool And Kit
Komatsu : D41q-3(S/N 6001-Up) : Tool And Kit : Clothes (Except Japan)
| 09***50 | Overall,(Special Order) | 1 |
| 09***57 | Cap,(Special Order) | 1 |
| 12***20 | Clothes Kit | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Tool And Kit : Service Kit
| 01***16 | Washer,Lock (Kit) | 2 |
| 04***15 | Pin,Cotter (Kit) | 1 |
| 07***12 | O-Ring, Between Valve And Pump | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Tool And Kit : Spare Parts (Except Japan)
| 04***55 | V-Belt Set,(For Trimming Dozer) | 1 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
| 07***01 | Fitting,(With Body Positioner) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Tool And Kit : Tool (Except Japan)
| 07***50 | Pump, (Bellows Type) | 1 |
| 07***03 | Cartridge - Grease | 1 |
| 07***00 | Nozzle, Grease Pump (Flexible Type) | 1 |
Track
Komatsu : D41q-3(S/N 6001-Up) : Track : Carrier Roller
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***45 | Bolt,(For Slag Handling) | 8 |
Komatsu : D41q-3(S/N 6001-Up) : Track : Idler
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***40 | Bolt,(Not Used With Cab) | 8 |
| 01***13 | Nut - Cylinder Mounting | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Track : Recoil Spring
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 6 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 12 |
Komatsu : D41q-3(S/N 6001-Up) : Track : Track Frame (Except Japan)
| 01***30 | Bolt,(For Center Guard) | 30 |
| 01***40 | Bolt,(Not Used With Cab) | 2 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Track : Track Roller(#6001-8191)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***55 | Bolt,(For Long Track) | 40 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 12 |
Komatsu : D41q-3(S/N 6001-Up) : Track : Track Shoe (Lubricate Type)(#..-)
| 01***22 | Nut? Shoe (Kit) | 280 |
| 07***30 | Plug,(Large) | 74 |
| 07***21 | Plug,(Small) | 74 |
Komatsu : D41q-3(S/N 6001-Up) : Track : Track Shoe (Lubricate Type)(#6001-..)
| 01***22 | Nut? Shoe (Kit) | 280 |
| 12***20 | Track Link Ass'Y | 1 |
| 12***21 | Track Link Ass'Y | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Track : Track Shoe (Master Pin Type)
| 01***22 | Nut? Shoe (Kit) | 296 |
| 12***10 | Track Link Ass'Y | 1 |
| 12***11 | Track Link Ass'Y | 1 |
Work Equipment
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment : Bucket
| 01***15 | Nut | 4 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 4 |
| 09***20 | Bolt | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment : Lift Arm
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment : Side Frame
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***45 | Bolt,(For Slag Handling) | 4 |
Work Equipment Control System
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Bucket Control Lever
| 01***20 | Bolt | 4 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Bucket Control Linkage
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Bucket Control Lock Lever
| 01***55 | Bolt | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***19 | Washer,(Not Used With Ventilator) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Bucket Dump Cylinder
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Bucket Lift Cylinder
| 01***11 | Nut,(With Under Mirror) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***15 | O-Ring,(Y1621-01a0-10) | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Hydraulic Control Valve (1/2)
| 01***20 | Bolt (Itl) | 4 |
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 01***30 | Bolt | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Hydraulic 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 : D41q-3(S/N 6001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Tank To Pump To Valve)
| 01***40 | Bolt,(For Position Fixing) | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 6 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Valve To Dump Cylinder)
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
| 01***30 | Bolt,(For Center Guard) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Hydraulic Oil Piping (Valve To Lift Cylinder)
| 01***45 | Bolt,(For Suction? Reversible Fan) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 07***34 | O-Ring (K32) | 2 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Hydraulic Pump
| 04***18 | Ring, Retaining | 1 |
| 70***10 | Pump Ass'Y,(Sar 050) | 1 |
| 70***10 | Seal, Oil | 1 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Hydraulic Tank And Filter
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***30 | Bolt,(For Center Guard) | 4 |
Komatsu : D41q-3(S/N 6001-Up) : Work Equipment Control System : Kick Out And Bucket Positioner
| 01***25 | Bolt (M6-1.00x25) | 3 |
| 01***30 | Bolt | 3 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
D41Q-3(S/N 6001-UP) serial number reference
Locate the serial number plate on the front frame casting, typically on the operator's left side near the radiator support. For export-market machines, a 17-character ISO PIN may also be present on the emissions plate. Cross-check the riveted plate against any engraved frame number to verify authenticity.
| Prefix | Identifies | Notes |
|---|---|---|
| 6001-UP | D41Q-3 | The serial range starts from 6001. Verify the exact serial number on the machine plate to ensure compatibility with parts and manuals. |
Frequently asked questions
What engine is installed in the Komatsu D41Q-3?
The machine is powered by a Komatsu 6D105-1 engine, providing approximately 89.8 hp (67 kW) of net power.
What is the operating weight of this bulldozer?
The D41Q-3 has an operating weight of approximately 24,912 lb (11.3 t).
What model replaced the D41Q-3?
Specific successor models are not explicitly documented in the technical data; however, it belongs to the Komatsu D-series lineage of crawler dozers.
What D41Q-3(S/N 6001-UP) owners discuss
What are the known hydraulic and steering issues reported for the D4/Q-3?
Operators have reported instances of weak steering performance when the machine reaches operating temperature. Additionally, potential hydraulic issues involving blade movement or offset functionality may occur in related configurations.
How can a technician diagnose hydrostatic transmission (HST) pump performance on this model?
The HST pumps can be stall-tested to read left and right PSI sensors. Per the shop manual, specific codes are available to verify the electrical signals feeding the solenoid valves attached to the left and right HST pumps to identify if a problem is caused by a weak pump or a faulty electrical connection.
What are the primary engine specifications for the D41Q-3 (S/N 6001-UP)?
The machine utilizes a Komatsu 6D105-1 engine. Performance data varies by configuration, but documented specs include an engine power of approximately 89.8 hp (67 kW) and an engine speed at maximum torque of 2,350 rpm.
What undercarriage or dimension specifications should be noted for transport planning?
The machine features a track width of 560 mm (22 in). Transport dimensions are approximately 4.82 m (15.8 ft) in length, 2.32 m (7.61 ft) in width, and 3.02 m (9.89 ft) in height.
What should be checked when inspecting a used Komatsu D41Q-3 for potential fraud?
Verify that the serial number on the chassis plate matches the number engraved on the frame casting; a mismatch is a primary signal of stolen equipment. Additionally, if the machine was built after 2008 and equipped with Komtrax, compare the dashboard hour meter against the Komtrax telematics history to check for hour-meter rollback.
What maintenance checks are required during a 500-hour service interval?
The 500-hour service includes all 250-hour tasks plus: fuel filter replacement, hydraulic return filter replacement, battery service, coolant test (SCA), oil sample collection, and a detailed undercarriage inspection.
What is the procedure for verifying electrical solenoid functionality?
Use the diagnostic codes found in the shop manual to verify the electrical signals feeding the HST solenoids. If signals are present but performance is poor, a faulty connection or weak pump may be the cause. Have your dealer verify.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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