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Komatsu JV40DW-3(S/N 5001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu JV40DW-3 is a tandem vibratory smooth drum roller designed for road construction and foundation compaction. It is powered by a 27.7 hp (20.6 kW) diesel engine with an 87.3 cu in (1,430 cc) displacement. The machine has an operating weight of 8,598.1 lb (3,899 kg) and a fuel capacity of 12.5 gal (47.3 L). Production years are not documented for this exact serial range. The JV40DW-3 is part of the JV40 series, which includes the JV40CW-3 variant. Configurations offered include smooth drum and tandem drum setups.
Across the JV40 series, Komatsu integrated Tier 4 Interim emissions compliance and KOMTRAX telematics. The JV40DW-3 matters in the used market because its compact weight allows transport on standard trailers, while its vibratory system provides high compaction density. The machine's reliability in tight spaces makes it a staple for municipal and utility projects. Parts availability remains strong due to the shared platform with the JV40CW-3, ensuring continued support for the JV40DW-3(S/N 5001-UP) in the aftermarket.
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 JV40DW-3(S/N 5001-UP) specifications
Engine
| Model | Komatsu 3D84E |
| Number of Cylinders | 3 |
| Displacement | 87.3 cu in (1,430 cc) |
| Gross Power | 27.7 hp (20.6 kW) @ 2700 rpm |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | 8598.1 lb (3899 kg) |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | 10.18 in (25.8 cm) |
| Transport Width | 4.57 ft (1.39 m) |
| Transport Height | 5.75 ft (1.75 m) |
| Wheelbase | 7.55 in (19.2 cm) |
| Ground Clearance | 9.85 in (25.0 cm) |
| Drum Diameter | 31.5 in (800 mm) |
| Drum Width | 51.2 in (1300 mm) |
Performance
| Max Travel Speed | 6.6 mph (10.6 km/h) |
| Vibration Frequency | 55 Hz |
| Centrifugal Force (Medium) | 5510 lb (24.5 kN) |
Service capacities (summary)
| Fuel Tank | 12.5 gal (47.3 L) |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu JV40DW-3(S/N 5001-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 JV40DW-3(S/N 5001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Use KOWA analysis to monitor engine wear metals and hydraulic contamination. Check coolant SCA levels at 500-hour intervals to prevent scaling. Monitor DEF levels daily to ensure Tier 4 compliance. Track fuel filter water separation to protect the injection system. Analyze hydraulic oil viscosity to detect pump wear early. Inspect air filter restriction indicators to maintain engine breathing efficiency.
Corrective & Common Repairs
Address slow hydraulic response by checking return filter clogging. Replace worn track pads to maintain traction and reduce drum slippage. Fix hydraulic hose leaks to prevent fluid loss and contamination. Inspect vibration exciter bearings for noise and heat. Replace cracked drum welds to restore structural integrity. Check electrical connections for corrosion that causes intermittent fault codes.
Overhaul & Rebuild Points
Rebuild the hydraulic pump when flow drops below specification. Replace final drive gears and bearings at 2,000-hour intervals or upon oil contamination. Overhaul the engine if compression drops or oil consumption exceeds limits. Replace swing circle bearings if play is detected in the drum assembly. Inspect the turbocharger for shaft play and replace if necessary. Rebuild the transmission if slippage occurs during speed changes.
Seasonal & Environment Servicing
Use low-viscosity engine oil in cold weather to ensure easy starting. Check coolant freeze point before winter operations. Drain water from the fuel separator daily in humid conditions. Inspect rubber tracks for cracking due to UV exposure. Clean radiator fins to prevent overheating in dusty environments. Grease all pivot points more frequently in abrasive conditions to extend bushing life.
JV40DW-3(S/N 5001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| YM129100-55650 | Element,Fuel Filter | Fuel system service | Check fitment → |
| 257-80-17300 | Filter Ass'Y,Hydraulic Oil | Hydraulic service | Check fitment → |
| YM121420-01760 | O-Ring,Oil Filter | Lubrication service | Check fitment → |
| 266-80-88800 | Filter Ass'Y,Bypass | Scheduled service item | Check fitment → |
| 266-80-88830 | Element | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
JV40DW-3(S/N 5001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E10 | Engine controller power failure; engine control drive system circuit malfunction. | Faulty ECM power connections, blown fuses, or damaged ground wires. | Inspect ECM power connections, fuses, and ground wires. |
| CA115 | Engine crankshaft speed sensor and backup speed sensor failure. | Broken sensor, wiring issue, or connector corrosion. | Replace the speed sensor and verify voltage at the pin connector. |
| CA441 | Battery voltage too low. | Weak battery, failing alternator, or loose connections. | Replace the battery or alternator; check the voltage regulator. |
| CA442 | Battery voltage too high. | Failing voltage regulator or alternator overcharging. | Replace the alternator or battery; check the voltage regulator. |
| AA10NX | Air cleaner clogging. | Dirty or blocked air filter element. | Replace the air filter. |
| B@BCNS | Engine coolant overheating. | Low coolant level, blocked radiator fins, or fan belt failure. | Check radiator fins, fan belt, and coolant level. |
| B@HANS | Hydraulic oil overheating. | Dirty hydraulic filter, low oil level, or cooler fan malfunction. | Change hydraulic filter and oil; check cooler fan operation. |
| AB00KE | Charge voltage too low. | Alternator malfunction or loose drive belt. | Replace the alternator or tighten the belt. |
| CA111 | Internal engine controller fault. | ECM hardware failure or software corruption. | Replace or reprogram the ECM. |
| CA234 | Engine overspeed. | Throttle calibration error, engine load cycle issue, or operator misuse. | Verify throttle calibration and engine load cycle. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
JV40DW-3(S/N 5001-UP) attachments & work tools
Drum Configuration
The JV40DW-3 is a tandem vibratory smooth drum roller featuring a front drum diameter of 2.63 ft (31.5 in) and a width of 51.2 in. The rear drum is also smooth and vibratory, designed for compaction of asphalt and soil in roadwork and foundation projects.
Engine & Power
The machine uses a Komatsu 3D84E engine with 3 cylinders and 87.3 cu in displacement. Gross power is rated at 27.7 hp at 2700 rpm. This configuration supports the hydraulic vibration system and travel drive for the 8598.1 lb operating weight.
Vibration System
The vibratory system operates at a frequency of 55 Hz. The centrifugal force is rated at 5510 lb. This setup provides the compaction energy required for the JV40DW-3 class, distinguishing it from non-vibratory or single-drum variants.
Dimensions & Transport
Overall length is 10.18 in (source value) with an overall width of 4.57 ft. Ground clearance is 9.85 in and the wheelbase measures 7.55 in. The height to the top of the cab is 5.75 ft. These dimensions define the transport and site access envelope for this specific serial range.
Fluid Capacities
The fuel capacity is 12.5 gal. Specific hydraulic, engine oil, and coolant capacities are not documented in the provided source text for this exact serial range; verify with the Komatsu Operation and Maintenance Manual (SEAM009401) for the JV40DW-3.
Operational Specs
Maximum travel speed is 6.6 mph. The machine is designed for utility and light compaction tasks. No specific work-tool attachments such as buckets or breakers are listed for this roller model in the source data.
All JV40DW-3(S/N 5001-UP) assemblies by section
Every catalogued assembly group for the Komatsu JV40DW-3(S/N 5001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
3d84e-3g Engine S/N 05993-Up
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Air Cleaner And Mounting
| YM***60 | Bolt,Wing | 1 |
| YM***70 | Seat,Rubber | 2 |
| YM***03 | Seal,Seal | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Air Intake Manifold And Connection
| YM***01 | Heater,Intake Air | 1 |
| YM***00 | Manifold,Air Intake | 1 |
| YM***52 | Screw | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Alternator (40a) (Inner Parts)
| YM***50 | Brush Ass'Y | 1 |
| YM***00 | Retainer,Bearing | 1 |
| YM***70 | Diode Ass'Y | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Alternator And Mounting (40a)
| YM***02 | Nut | 1 |
| YM***20 | Adjuster, Belt | 1 |
| YM***02 | Screw | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Camshaft And Tappet
| YM***80 | Camshaft Ass'Y | 1 |
| YM***01 | Gear Ass'Y,Camshaft | 1 |
| YM***50 | Bearing, Thrust | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Crankshaft
| YM***00 | Gear,Crank | 1 |
| YM***80 | Parallel Pin | 1 |
| YM***10 | Spring Pin | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Cylinder Block
| YM***30 | Main Metal Ass'Y (Std) | 4 |
| YM***00 | Plug | 1 |
| YM***50 | Plug | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Cylinder Block Accessory
| YM***00 | O-Ring (Kit) | 1 |
| YM***20 | Plug,Drain(Without Oil Cooler Type) | 1 |
| YM***00 | Gauge,Oil Level | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Cylinder Head
| YM***31 | Gasket,Head (Kit) | 1 |
| YM***80 | Retainer, Spring | 6 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Cylinder Head Cover
| YM***20 | Cover, Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***00 | Clip,Breather Hose | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Drive Gear
| YM***02 | Nut | 1 |
| YM***01 | Idler Gear Ass'Y,Idler | 1 |
| YM***00 | Gear,Injection Pump | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Electrical Parts (Forwerded Individually Parts)
| YM***00 | Diode | 1 |
| YM***00 | Relay, Safety | 1 |
| YM***20 | Timer,Ribbon Heater | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Engine Stop Motor
| YM***20 | Motor Ass'Y,Engine Stop | 1 |
| YM***80 | Ring,Snap | 1 |
| YM***00 | Pin,Cotter | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Exhaust Manifold
| YM***10 | Manifold, Exhaust | 1 |
| YM***02 | Stud | 2 |
| YM***02 | Screw | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Flywheel And Flywheel Housing
| YM***02 | Screw | 6 |
| YM***02 | Screw | 4 |
| YM***80 | Parallel Pin | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Front Cover
| YM***90 | Front Cover Ass'Y | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***00 | Clip,Breather Hose | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Front Hanger
| YM***00 | Hook,Front | 1 |
| YM***42 | Screw | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Fuel Filter
| YM***00 | O-Ring (Kit) | 1 |
| YM***70 | Lever | 1 |
| YM***80 | Cup, Strainer | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Fuel Filter And Piping
| YM***70 | Union | 1 |
| YM***00 | Hose | 1 |
| YM***51 | Check Valve Ass'Y,Joint | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Fuel Injection Pump (Governor) (1/2) (Inner Parts)
| YM***02 | Lever Ass'Y,Stop | 1 |
| YM***10 | Pin,Stop Lever | 1 |
| YM***00 | O-Ring (Kit) | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Fuel Injection Pump (Governor) (2/2) (Inner Parts)
| YM***01 | Weight Assembly., Governor | 1 |
| YM***90 | Shaft,Governor Lever | 1 |
| YM***50 | Angleich Ass'Y | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Fuel Injection Pump (Pump) (1/2) (Inner Parts)
| YM***50 | Kit, Shim | 1 |
| YM***10 | Plate? Caution | 1 |
| YM***50 | Cover,Side | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Fuel Injection Pump (Pump) (2/2) (Inner Parts)
| YM***70 | Retainer, Spring | 3 |
| YM***02 | Screw | 2 |
| YM***00 | Valve,Delivery | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Fuel Injection Pump And Piping
| YM***20 | Retainer, Pipe | 1 |
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***22 | Pipe,Injection? No.2 | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Fuel Nozzle And Spill Pipe
| YM***00 | Nozzle, Assembly | 1 |
| YM***20 | Spring | 1 |
| YM***00 | Fuel Injection Nozzle, Assembly | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Gasket Kit
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***31 | Gasket,Head (Kit) | 1 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Lubricating Oil Pump
| YM***41 | Gasket (Kit) | 1 |
| YM***20 | Bolt,Joint (Cylinder Head Side) | 1 |
| YM***00 | Gasket,Ring (Kit) | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Muffler And Mounting
| YM***60 | Support,R.H | 1 |
| YM***02 | Screw | 2 |
| YM***01 | Gasket (Kit) | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Oil Filter
| YM***50 | Nut | 1 |
| YM***00 | Valve,Relief | 1 |
| YM***02 | Bolt Plated | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Oil Pan
| YM***70 | Oil Pan Ass'Y | 1 |
| YM***40 | Oil Pan Ass'Y | 1 |
| YM***52 | Screw | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : P.P.C. Pump And Mointing
| YM***02 | Screw | 3 |
| YM***64 | Bearing,Ball | 2 |
| YM***02 | Stud | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Piston And Connecting Rod
| YM***00 | Screw | 2 |
| YM***00 | Crank Pin Metal A. (Std) | 1 |
| YM***01 | Assembly, Piston (+0.25 mm) | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Rear Hanger
| YM***00 | Hook,Front | 1 |
| YM***42 | Screw | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Rocker Arm
| YM***02 | Screw | 6 |
| YM***80 | Spring | 3 |
| YM***50 | Rocker Arm Ass'Y | 6 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Starting Motor (Inner Parts)
| YM***30 | Dust Cover Set | 1 |
| YM***71 | Brush Holder Ass'Y | 1 |
| YM***10 | Terminal Cover | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Starting Motor And Mounting
| YM***52 | Bolt Plated | 2 |
| (Y***2) | Starting Motor Ass'Y,(See Fig.A6210-B0a1) | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Tool
| YM***70 | Wrench | 1 |
| YM***20 | Wrench | 1 |
| YM***50 | Screw Driver | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Water Pump And Cooling Fan
| YM***40 | Joint | 1 |
| YM***41 | Fan,Cooling? (Stamp Mark Jt) | 1 |
| YM***02 | Bolt Plated | 2 |
3d84n-2ca Engine S/N 03250-Up
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Air Cleaner And Mounting
| YM***60 | Bolt,Wing | 1 |
| YM***70 | Seat,Rubber | 2 |
| YM***03 | Seal,Seal | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Air Intake Manifold And Connection
| YM***01 | Heater,Intake Air | 1 |
| YM***00 | Manifold,Air Intake | 1 |
| YM***10 | Hose | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Alternator And Mounting(#21132-)
| YM***30 | Plate,Adjust | 1 |
| YM***02 | Nut | 1 |
| YM***52 | Screw | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Alternator(#21132-)
| YM***50 | Brush Ass'Y | 1 |
| YM***00 | Retainer,Bearing | 1 |
| YM***70 | Diode Ass'Y | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Camshaft And Tappet(#66042-)
| YM***80 | Camshaft Ass'Y | 1 |
| YM***01 | Gear Ass'Y,Camshaft | 1 |
| YM***50 | Bearing, Thrust | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Crankshaft(#07816-)
| YM***00 | Gear,Crank | 1 |
| YM***80 | Parallel Pin | 1 |
| YM***00 | Crankshaft Ass'Y | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Cylinder Block
| YM***02 | Screw | 1 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***00 | Gauge,Oil Level | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Cylinder Head
| YM***80 | Retainer, Spring | 6 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 3 |
| YM***10 | Valve,Exhaust | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Cylinder Head Cover
| YM***20 | Cover, Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***00 | Clip,Breather Hose | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Engine Stop Motor Amd Mounting
| YM***20 | Motor Ass'Y,Engine Stop | 1 |
| YM***80 | Ring,Snap | 1 |
| YM***00 | Pin,Cotter | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Exhaust Manifold And Muffler
| YM***10 | Manifold, Exhaust | 1 |
| YM***60 | Support,R.H | 1 |
| YM***02 | Screw | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Flywheel And Flywheel Housing(#27663-)
| YM***02 | Screw | 6 |
| YM***02 | Screw | 4 |
| YM***80 | Parallel Pin | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Fuel Filter
| YM***00 | O-Ring (Kit) | 1 |
| YM***70 | Lever | 1 |
| YM***80 | Cup, Strainer | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Fuel Injection Pump (Governor) (1/2)
| YM***00 | Spring, Regulator | 1 |
| YM***02 | Lever Ass'Y,Stop | 1 |
| YM***10 | Pin,Stop Lever | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Fuel Injection Pump (Governor) (2/2)
| YM***01 | Weight Assembly., Governor | 1 |
| YM***90 | Shaft,Governor Lever | 1 |
| YM***16 | Pin,Spring | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Fuel Injection Pump (Pump) (1/2)
| YM***50 | Kit, Shim | 1 |
| YM***10 | Plate? Caution | 1 |
| YM***50 | Cover,Side | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Fuel Injection Pump (Pump) (2/2)
| YM***70 | Retainer, Spring | 3 |
| YM***00 | Plunger Ass'Y | 3 |
| YM***02 | Screw | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Fuel Injection Pump And Piping
| YM***20 | Retainer, Pipe | 1 |
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***00 | Hose | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Fuel Nozzle And Spill Pipe
| YM***70 | Union | 1 |
| YM***00 | Nozzle, Assembly | 1 |
| YM***20 | Spring | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Gasket Kit
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***01 | Gasket Kit | 1 |
| YM***20 | Gasket,Water Pump | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Gear Case And Front Cover(#27663-)
| YM***90 | Front Cover Ass'Y | 1 |
| YM***10 | Washer,Seal | 5 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Lubricating Oil Filter
| YM***50 | Nut | 1 |
| YM***00 | Valve,Relief | 1 |
| YM***02 | Bolt Plated | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Lubricating Oil Pump And Suction Pipe
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***41 | Gasket (Kit) | 1 |
| YM***20 | Bolt,Joint (Cylinder Head Side) | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Oil Pan
| YM***40 | Oil Pan Ass'Y | 1 |
| YM***02 | Screw | 4 |
| YM***40 | Oil Pan Ass'Y | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Piston And Connecting Rod
| YM***20 | Piston Ass'Y | 3 |
| YM***00 | Screw | 2 |
| YM***00 | Crank Pin Metal A. (Std) | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Power Take Off
| YM***02 | Screw | 3 |
| YM***01 | Gear | 1 |
| YM***64 | Bearing,Ball | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Rocker Arm
| YM***02 | Screw | 6 |
| YM***80 | Spring | 3 |
| YM***50 | Rocker Arm Ass'Y | 6 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Safety Relay? Diode And Glow Plug Timer
| YM***00 | Diode | 1 |
| YM***00 | Relay, Safety | 1 |
| YM***20 | Timer,Ribbon Heater | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Starting Motor
| YM***60 | Cover | 1 |
| YM***30 | Dust Cover Set | 1 |
| YM***70 | Brush Holder Ass'Y | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Starting Motor And Mounting
| YM***30 | Cover,Terminal | 1 |
| YM***52 | Bolt Plated | 2 |
| (Y***1) | Starting Motor Ass'Y,(See Fig.0661) | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Tool
| YM***70 | Wrench | 1 |
| YM***20 | Wrench | 1 |
| YM***50 | Screw Driver | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : 3d84n-2ca Engine S/N 03250-Up : Water Pump And Cooling Fan
| YM***41 | Fan,Cooling? (Stamp Mark Jt) | 1 |
| YM***02 | Bolt Plated | 2 |
| YM***60 | Spacer | 1 |
Control System
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Brake Pedal And Linkage
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***25 | Bolt,(Rear Attachment Less) | 4 |
| 01***30 | Bolt - M8 X 30lg | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Forward And Reverse Control Lever
| 01***16 | Bolt - Seat And Tether Belt Mounting | 6 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 9 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Fuel Control Lever(#5001-5100)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***30 | Bolt | 2 |
| 01***04 | Nut,(For Air Conditioner Less) | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Fuel Control Lever(#5101-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***50 | Capscrew | 1 |
| 01***30 | Bolt,Stopper | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : High And Low Speed Control Lever
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Steering Cylinder
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 1 |
| 07***66 | Ring,Back-Up (Kit) | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Steering Cylinder Mounting Parts
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 04***18 | Ring, Snap | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Steering Piping (1/3) (Tank To Pump)
| 01***20 | Screw | 3 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 3 |
| 07***23 | Clamp | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Steering Piping (2/3) (Pump To Steering Valve)(#5001-5100)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***20 | Screw | 3 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Steering Piping (2/3) (Pump To Steering Valve)(#5101-)
| 01***60 | Bolt | 2 |
| 01***20 | Screw | 3 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Steering Piping (3/3) (Steering Valve To Steering Cylinder)
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 1 |
| 25***23 | Elbow | 1 |
| 25***23 | Elbow | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Steering Valve
| 25***01 | Steering Valve Ass'Y | 1 |
| 25***09 | Valve Ass'Y | 1 |
| 25***00 | Control Ass'Y | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Control System : Steering Wheel
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***45 | Bolt,(With Water Separator Type) | 4 |
| 01***11 | Nut - Mounting | 1 |
Engine Related Parts And Electrical System
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Front Frame Line)(#5001-5100)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***20 | Bolt,(Without Maintenance Monitor) | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Front Frame Line)(#5101-)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***20 | Bolt,(Without Maintenance Monitor) | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (2/2) (Rear Frame Line)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 6 |
| 01***16 | Screw,(For Alternator 50a) | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Engine And Main Pump Mounting Parts(#5001-5115)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 14 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Engine And Main Pump Mounting Parts(#5116-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 14 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Exhaust Related Parts
| 01***85 | Bolt - M8 X 85lg | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Fuel Tank(#5001-5115)
| 01***16 | Screw | 5 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 5 |
| 25***40 | Nipple | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Fuel Tank(#5116-)
| 01***16 | Screw | 5 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 5 |
| 07***37 | Clamp | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Radiator And Mounting Parts
| 01***12 | Bolt - M8 - 1.25 X 12 | 5 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
Guard
Komatsu : Jv40dw-3(S/N 5001-Up) : Guard : Center Pin
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***55 | Bolt,(Not Used For Chip Dozer) | 16 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Guard : Dashboard And Cover
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 10 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Guard : Front Frame And Cover (1/2) (Roller And Engine Side Cover)
| 01***12 | Bolt - M8 - 1.25 X 12 | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 12 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Guard : Front Frame And Cover (2/2) (Bonnet And Tank Cover)(#5001-5100)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 6 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Guard : Front Frame And Cover (2/2) (Bonnet And Tank Cover)(#5101-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Guard : Operator'S Seat
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 6 |
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 8 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Guard : Rear Frame And Cover
| 01***12 | Bolt - M8 - 1.25 X 12 | 6 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 14 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Mark Plate And Tool
Komatsu : Jv40dw-3(S/N 5001-Up) : Mark Plate And Tool : Marks And Plates (English)(#5001-5100)
| 09***21 | Plate? Caution,Fuel Inlet | 1 |
| 09***10 | Plate? Safety,Hydraulic Tank Cap | 1 |
| 09***01 | Plate? Caution,Radiator | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Mark Plate And Tool : Marks And Plates (English)(#5101-)
| 09***21 | Plate? Caution,Fuel Inlet | 1 |
| 09***10 | Plate? Safety,Hydraulic Tank Cap | 1 |
| 09***01 | Plate? Caution,Radiator | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Mark Plate And Tool : Tool(#5001-5100)
| 09***27 | Wrench? 24x27 | 1 |
| 09***36 | Wrench? 8,Allen | 1 |
| 09***50 | Pliers | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Mark Plate And Tool : Tool(#5101-)
| 07***00 | Pump,Grease | 1 |
| 07***04 | Cartridge,Grease | 1 |
| 07***00 | Nozzle,(For Rubber Shoe) | 1 |
Track
Komatsu : Jv40dw-3(S/N 5001-Up) : Track : Front Roller
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***35 | Bolt,(For Fix Position) | 4 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 24 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Track : Front Scraper (1/2) (Front)
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 7 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Track : Front Scraper (2/2) (Rear)
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 7 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Track : Rear Roller
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***35 | Bolt,(For Fix Position) | 4 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 24 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Track : Rear Scraper (1/2) (Front)
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 7 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Track : Rear Scraper (2/2) (Rear)
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 7 |
Work Equipment Control System
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Hst Piping (Bypass Valve Line)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Hst Piping (Front Drive Motor Line) (1/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Hst Piping (Front Drive Motor Line) (2/2)
| 25***61 | Hose | 1 |
| 25***12 | Elbow | 3 |
| 25***16 | Elbow | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Hst Piping (Neutral Valve Line)(#5001-5100)
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Hst Piping (Neutral Valve Line)(#5101-)
| 01***90 | Bolt,With Cover | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Hst Piping (Rear Drive Motor Line)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 6 |
| 01***30 | Bolt - M8 X 30lg | 3 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 9 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Hydraulic Oil Tank
| 01***16 | Bolt - Seat And Tether Belt Mounting | 10 |
| 01***50 | Bolt,(Spark Arrester Spec.) | 4 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 10 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Vibration Piping (Front Line) (1/2)
| 25***33 | Hose | 1 |
| 25***35 | Hose | 1 |
| 25***23 | Elbow | 3 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Vibration Piping (Front Line) (2/2)
| 01***90 | Bolt,With Cover | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
| 07***20 | O-Ring,Relief Valve | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Vibration Piping (Rear Line)
| 25***22 | Elbow | 1 |
| 25***23 | Elbow | 4 |
| 25***22 | Support | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Filter
| 27***00 | Filter Ass'Y,Water | 1 |
| 27***20 | Case | 1 |
| 27***80 | O-Ring | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Pump(#5001-5005)
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 26***00 | Pump,Water | 1 |
| 26***30 | Seal | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Pump(#5006-)
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 25***00 | Pump Ass'Y,Water | 1 |
| 25***70 | Casing | 1 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (1/3) (Water Tank To Water Pump To Water Strainer)(#5001-5005)
| 01***12 | Bolt - M8 - 1.25 X 12 | 4 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (1/3) (Water Tank To Water Pump To Water Strainer)(#5006-5115)
| 01***12 | Bolt - M8 - 1.25 X 12 | 4 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (1/3) (Water Tank To Water Pump To Water Strainer)(#5116-)
| 01***12 | Bolt - M8 - 1.25 X 12 | 4 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (2/3) (Water Strainer To Front Nozzle)(#5001-5115)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (2/3) (Water Strainer To Front Nozzle)(#5116-)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (3/3) (Water Strainer To Rear Nozzle)(#5001-5115)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (3/3) (Water Strainer To Rear Nozzle)(#5116-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Tank(#5001-5100)
| 01***20 | Bolt | 12 |
| 01***16 | Screw,(Not Used When Ventilator) | 4 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 4 |
Komatsu : Jv40dw-3(S/N 5001-Up) : Work Equipment Control System : Water Tank(#5101-)
| 01***20 | Bolt | 12 |
| 01***16 | Screw,(Not Used When Ventilator) | 4 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 4 |
Frequently asked questions
What engine does the Komatsu JV40DW-3 use?
The Komatsu JV40DW-3 uses a 27.7 hp (20.6 kW) diesel engine with an 87.3 cu in (1,430 cc) displacement.
What is the operating weight of the Komatsu JV40DW-3?
The operating weight of the Komatsu JV40DW-3 is 8,598.1 lb (3,899 kg).
What replaced the Komatsu JV40DW-3?
The successor to the Komatsu JV40DW-3 is the JV40DW-4, which features updated emissions compliance and improved telematics.
What JV40DW-3(S/N 5001-UP) owners discuss
What engine powers the Komatsu JV40DW-3(S/N 5001-UP) and what are its key specifications?
The Komatsu JV40DW-3 is powered by a Komatsu industrial engine. Gross power is 27.7 hp (20.7 kW). Displacement is 87.3 cu in (1.43 L). The machine operates with a maximum speed of 6.6 mph (10.6 km/h). The fuel capacity is 12.5 gal (47.3 L). Operating weight is 8598.1 lb (3900 kg). Overall length is 10.18 in (25.8 cm) — note: this dimension appears to be a data entry error in source material; typical overall length for this class is approximately 10.18 ft (3.10 m). Verify with the factory spec sheet for exact dimensions.
What are the common hydraulic behaviors and failure modes for this series?
Komatsu hydraulic systems are generally smooth and fuel-efficient. A known failure pattern involves the main hydraulic pump; if the pump fails, the engine may be compromised shortly after. Slow movement in a single function typically points to cylinder leakage, control-valve spool issues, or hose restriction rather than the main pump. If all functions are slow, check hydraulic oil level, correct fluid specification, filters, and engine RPM. Weak performance when hot often indicates internal leakage in the pump, main control valve, or motors due to decreased oil viscosity.
What undercarriage or wear patterns are typical for this machine type?
Components such as bushings, bearings, and track pads are subject to significant wear. Worn bushings can lead to noise and vibration. Worn bearings may cause premature failure of the tracks. Track tension should be checked regularly; if the track repeatedly loosens, inspect the adjuster and undercarriage components. Ensure track tension is balanced on both sides to prevent pulling or drifting during travel.
What are the known engine quirks or common issues for this series?
Engine performance issues often manifest as power loss under load, increased fuel usage, or overheating. Causes include airflow restriction (dirty air filter), injector wear, or failing fuel delivery components. Contaminated fuel with dirt or water leads to ignition problems. Blocked fuel filters or clogged injectors restrict fuel flow. Overheating may indicate a blocked cooling package (radiator, hydraulic oil cooler, charge-air cooler) or inadequate coolant levels. Check the cooling system for blockages and test the battery with a multimeter if starting is difficult.
What are the common electrical or sensor issues reported?
Komatsu equipment relies on electronic control systems. A single faulty sensor or unstable power supply can trigger multiple warning signals. Owners report intermittent starting, dashboard failure, or machines that randomly shut down. Check battery state of charge, terminals, engine/chassis grounds, and main starter cable. Verify sensor functionality and control panel operation. Multiple fault codes often point to battery, grounds, or connector issues.
What fluids and lubricants are specified for the Komatsu JV40DW-3?
Use Komatsu Genuine Oil specifications. Hydraulic system: Komatsu Hydraulic Oil HO56-HE (ISO VG46) or equivalent meeting Komatsu Engineering Standard. Engine oil: Komatsu Diesel Engine Oil TO10 (SAE 10W) or TO30 (SAE 30) depending on ambient temperature. Axle oil: Komatsu Axle Oil AXO80 (SAE 80WZF). Coolant: Super Coolant AF-NAC. Powertrain oil: Komatsu Powertrain Oil TO10 or TO30. Verify specific capacities and intervals in the Operation and Maintenance Manual for this serial range.
What should be checked when buying a used JV40DW-3(S/N 5001-UP)?
Verify the exact serial-prefix specification sheet and installed attachment package. Check the hydraulic system for leaks, stuck components, and fluid levels. Inspect the engine for oil burning (dirty air filter, gas channeling, non-standard oil). Test all hydraulic functions cold and hot to detect internal leakage. Check undercarriage wear, track tension, and bearing condition. Inspect electrical connections, sensors, and battery health. Look for corrosion on exposed metal components. Have your dealer verify the engine serial number and emissions configuration match the machine's documentation.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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