Komatsuother(no series)
Komatsu JV40CW-3(S/N 5001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu JV40CW-3 (S/N 5001-up) is a compact single-drum vibratory combination roller in the roughly 3.6 tonne (7,937 lb) class, pairing a smooth steel front drum with a rubber-tired rear axle for combined static and vibratory compaction on asphalt lifts and granular base material. It runs a Komatsu 3D84E three-cylinder, mechanically-injected diesel rated around 20.7 kW (27.7 hp) at 2700 rpm, with no electronic engine controls or fault-code system, matching its mid-1990s design era. Komatsu Utility Europe built the machine at its Este, Italy plant, with this S/N 5001-up production block dating to that period. The JV40CW-3 sat above the lighter JV25-class single-drum rollers in Komatsu's compaction lineup and was later carried forward conceptually into the JV40CW-5 generation. Komatsu offered the same base chassis as the JV40DW-3, a twin smooth-drum tandem variant built alongside it and documented in the same operation and maintenance manual, though the two remain distinct configurations aimed at different compaction jobs.
Later JV-series generations moved toward more sealed hydraulic drive circuits, revised articulation steering geometry, and better dust and splash protection around the exciter housing, but the core concept, a mechanical diesel driving a hydrostatic propel system and a vibratory exciter, changed little between the -3 and later generations. Because the JV40CW-3 predates electronic engine and machine controls, it remains attractive in the used market as a low-complexity combination roller that avoids emissions-tier hydraulics and diagnostic tooling, keeping ownership and repair costs predictable. Parts demand today centers on wear items common across the JV40 family, drum scrapers, exciter bearings, articulation bushings, and rear drive tires, rather than electronics, making well-maintained units steady candidates for rebuild-and-resell rather than scrap.
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 JV40CW-3(S/N 5001-UP) specifications
Engine
| Engine model | Komatsu 3D84E, 3-cylinder diesel |
| Gross power | 20.7 kW (27.7 hp) @ 2700 rpm |
| Net power | Not documented for this serial range |
| Displacement | 1.43 L (87.3 cu in) |
| Cylinders | 3 |
| Emissions tier | Not documented; pre-Tier mechanical-era diesel, no emissions certification published |
Weights
| Operating weight | 3,600 kg (7,937 lb) |
| Shipping weight | Not documented for this serial range |
| Ground pressure | Not published |
Dimensions
| Overall width | 1.40 m (4.6 ft) |
| Overall height (top of ROPS/canopy) | 1.77 m (5.8 ft) |
| Ground clearance | 25.1 cm (9.9 in) |
| Drum diameter | 80.0 cm (31.5 in) |
| Drum / compaction width | 130.0 cm (51.2 in) |
| Overall length / wheelbase | Not reliably documented for this serial range — available figures are inconsistent with the machine's weight and width class; verify with your dealer or the factory spec sheet |
Performance
| Max travel speed | 12.1 km/h (7.5 mph) |
| Vibration frequency | 55 Hz (vpm) |
| Centrifugal force (medium amplitude) | 2,499 kg (5,510 lb) |
| Gradeability | Not published for this serial range |
Service capacities (summary)
| Fuel tank | 47.3 L (12.5 gal) |
| Hydraulic system | Not documented for this serial range |
| Engine oil | Not documented for this serial range |
| Cooling system | Not documented for this serial range |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
JV40CW-3(S/N 5001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | not published for this serial range in available sources — verify with dealer/OMM | Komatsu genuine diesel engine oil (Komatsu EO / EO-08), API CD/CH-4 class. Use SAE 15W-40 in temperate climates; SAE 10W-30 or 10W to about -20°C in cold climates, per Komatsu's engine-oil viscosity-by-ambient-temperature chart. |
| Cooling system | not published for this serial range in available sources — verify with dealer/OMM | Komatsu genuine antifreeze/coolant (Komatsu Supercoolant, permanent type), pre-mixed for freeze protection to about -30C in cold regions; do not mix with other coolant brands. |
| Fuel tank | 47.3 L (12.5 US gal) | ASTM D975 No. 2-D diesel fuel for normal operation; switch to No. 1-D (or a winter-blend) below about -10C ambient per Komatsu's fuel selection-by-temperature guidance. |
| Hydraulic system (propel/steering/vibration circuit, incl. tank) | not published for this serial range in available sources — verify with dealer/OMM | Komatsu genuine hydraulic oil (Komatsu HO), viscosity graded by ambient temperature per Komatsu's hydraulic-oil chart; an ISO VG46-equivalent grade is typical for temperate climates, with a lighter grade for cold-start regions. |
| Vibration mechanism / eccentric drum housing | not documented in available sources for this model | Komatsu genuine gear oil (Komatsu GO) or equivalent per the OMM lubrication chart — confirm exact grade and interval in the factory manual, as vibratory-drum housings often use a different oil than the main hydraulic circuit. |
| Grease (chassis, drum bearings, articulation/steering pins) | per-point spec only, no bulk volume specified | Komatsu genuine multipurpose lithium-based grease (Komatsu G2-LI), NLGI grade 2; molybdenum-disulfide-fortified grease where specified for heavily loaded pins. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu JV40CW-3(S/N 5001-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the JV40CW-3(S/N 5001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
With no ECM or fault codes on the 3D84E, oil sampling is the main early-warning tool. Pull engine oil samples near each 250h change to catch injection pump wear, coolant intrusion, or fuel dilution before they reach the mechanical injectors. Track exciter grease consumption and vibration amplitude/noise as leading indicators of bearing wear, since the exciter has no external sensor. Watch fuel filter clogging rate as a proxy for tank sediment buildup from vibration shaking loose contaminants.
Corrective & Common Repairs
Recurring failure points on this roller are the drum scraper bar (wears fast on abrasive base material), articulation pins and bushings loosened by constant steering flex, and the vibratory exciter bearing, which fails early if the 50h grease interval slips. Fuel filters clog quickly from vibration-shaken tank sediment on older units. Rear drive tires wear unevenly if inflation isn't checked weekly, and engine mounts crack from years of transmitted exciter vibration, showing up as new engine-bay rattles.
Overhaul & Rebuild Points
At high hours, the vibratory exciter shaft and bearing assembly is the first major rebuild point, followed by the hydrostatic propel pump and drive motor. The 3D84E's mechanical injection pump typically needs recalibration or overhaul well before the block does. On heavily used units, plan for smooth drum shell resurfacing to remove scoring, and inspect rear axle final-drive gearing for wear from combination-roller side loads during turns on the tire axle.
Seasonal & Environment Servicing
Cold-climate operation calls for winter-grade fuel and coolant, plus a pre-start check of the intake heating aid on the 3D84E since there's no electronic cold-start assist to fall back on. Protect exposed grease fittings and the articulation joint from mud and ice packing, which blocks lubrication paths. In hot, dusty environments, shorten the air cleaner service interval and clean the radiator core more often than the standard 50h check. For extended storage, drain the fuel/water separator and protect the exciter housing from moisture ingress.
JV40CW-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.
JV40CW-3(S/N 5001-UP) attachments & work tools
Drum / axle configuration
JV40CW-3 is a combination vibratory roller: single smooth steel front drum paired with a rubber-tired rear axle, articulated ride-on frame. Drum width is about 1,300 mm (51.2 in), drum diameter about 800 mm (31.5 in), operating weight near 3,600 kg (7,937 lb) per factory-style spec sheets; one source lists a lower 1,200 mm/4,000 kg figure, so treat exact drum width/weight as varying by configuration and confirm against the nameplate.
Related tandem sibling (reference only)
The JV40DW-3 shares the same chassis and duty class but replaces the rear tired axle with a second smooth steel drum (true tandem). Same operation and maintenance manual covers both models, but drum-set hardware is not interchangeable between the CW combination axle and the DW twin-drum arrangement.
Compaction drum shell kit
Smooth-drum rollers in this size and weight class commonly accept a bolt-on pad-foot/sheepsfoot shell kit over the steel drum for cohesive soil compaction, swapped back to smooth-drum for granular or finish work. A JV40CW-3-specific shell kit is not documented in the sources reviewed for this serial range; verify fitment and availability with your dealer.
Water spray / anti-adhesion system
A drum-mounted water spray bar (tank-fed, front drum) is standard practice on rollers of this class to stop asphalt or wet-mix pickup on the shell. Availability as a factory-fitted option specifically for JV40CW-3(S/N 5001-UP) was not confirmed in the sources checked; treat as dealer-verify.
Vibration system
Single-frequency vibratory drum, roughly 55 Hz nominal, with centrifugal force in the 2,500 kgf (5,500 lb) class at medium amplitude per spec-sheet data. This is integral to the drum assembly, not a swappable work tool; no separate high/low amplitude kit is documented for this model.
Operator station / guarding
Ride-on seated operator station with an open ROPS canopy is typical for this roller size class. No enclosed cab option is documented for JV40CW-3 in the sources reviewed; scraper bars mounted against the drum face to clear debris are standard fitted equipment, not a selectable attachment.
Attachment/coupler system
This model has no quick-coupler, 3-point hitch, or auxiliary hydraulic work-tool circuit. It is a self-contained compactor, not an attachment carrier; the only field-swappable items in this class are the drum shell (smooth vs. shell kit) and standard scraper/edge hardware.
All JV40CW-3(S/N 5001-UP) assemblies by section
Every catalogued assembly group for the Komatsu JV40CW-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Front Hanger
| YM***00 | Hook,Front | 1 |
| YM***42 | Screw | 2 |
Komatsu : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : 3d84e-3g Engine S/N 05993-Up : Rear Hanger
| YM***00 | Hook,Front | 1 |
| YM***42 | Screw | 2 |
Komatsu : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Control System : Fuel Control Lever(#5001-5300)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***30 | Bolt,Stopper | 2 |
| 01***04 | Nut,(For Air Conditioner Less) | 1 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Control System : Fuel Control Lever(#5301-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***50 | Capscrew | 1 |
| 01***30 | Bolt,Stopper | 1 |
Komatsu : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Control System : Steering Piping (2/3) (Pump To Steering Valve)(#5001-5300)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***20 | Screw | 3 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 3 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Control System : Steering Piping (2/3) (Pump To Steering Valve)(#5301-)
| 01***60 | Bolt | 2 |
| 01***20 | Screw | 3 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
Komatsu : Jv40cw-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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Control System : Steering Wheel
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***11 | Nut - Mounting | 1 |
Engine Related Parts And Electrical System
Komatsu : Jv40cw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Front Frame Line)(#5001-5300)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 3 |
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Front Frame Line)(#5301-)
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 3 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 3 |
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
Komatsu : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Engine And Main Pump Mounting Parts(#5001-5496)
| 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 : Jv40cw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Engine And Main Pump Mounting Parts(#5497-)
| 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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Fuel Tank(#5001-5496)
Komatsu : Jv40cw-3(S/N 5001-Up) : Engine Related Parts And Electrical System : Fuel Tank(#5497-)
| 01***16 | Screw | 5 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 5 |
| 25***40 | Nipple | 1 |
Komatsu : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Guard : Front Frame And Cover (2/2) (Bonnet And Tank Cover)(#5001-5300)
| 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 : Jv40cw-3(S/N 5001-Up) : Guard : Front Frame And Cover (2/2) (Bonnet And Tank Cover)(#5301-)
| 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 : Jv40cw-3(S/N 5001-Up) : Guard : Operator'S Seat
| 01***25 | Bolt,(Rear Attachment Less) | 8 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 8 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Guard : Rear Frame And Cover
| 01***16 | Bolt - Seat And Tether Belt Mounting | 14 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 8 |
Mark Plate And Tool
Komatsu : Jv40cw-3(S/N 5001-Up) : Mark Plate And Tool : Marks And Plates (English)(#5001-5300)
| 09***21 | Plate? Caution,Fuel Inlet | 1 |
| 09***10 | Plate? Safety,Hydraulic Tank Cap | 1 |
| 09***01 | Plate? Caution,Radiator | 1 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Mark Plate And Tool : Marks And Plates (English)(#5301-)
| 09***21 | Plate? Caution,Fuel Inlet | 1 |
| 09***10 | Plate? Safety,Hydraulic Tank Cap | 1 |
| 09***01 | Plate? Caution,Radiator | 1 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Mark Plate And Tool : Tool(#5001-5300)
| 09***27 | Wrench? 24x27 | 1 |
| 09***36 | Wrench? 8,Allen | 1 |
| 09***50 | Pliers | 1 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Mark Plate And Tool : Tool(#5301-)
| 07***00 | Pump,Grease | 1 |
| 07***04 | Cartridge,Grease | 1 |
| 07***00 | Nozzle,(For Rubber Shoe) | 1 |
Track
Komatsu : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Track : Front Scraper (1/2) (Front)
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 7 |
Komatsu : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Track : Rear Drive Motor And Chain
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***50 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***65 | Bolt,(Used With Pin Puller) | 2 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Track : Rear Scraper
| 01***40 | Bolt (Op) | 12 |
| 01***55 | Bolt,(Not Used For Chip Dozer) | 2 |
| 01***60 | Capscrew | 2 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Track : Rear Scraper (For Wide Tire)(#5301-)
| 01***40 | Bolt (Op) | 12 |
| 01***45 | Bolt,(For 60ton Dump Body) | 2 |
| 01***60 | Capscrew | 2 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Track : Rear Tire
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***65 | Bolt,(Without Rops) | 8 |
| 01***70 | Bolt | 8 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Track : Rear Tire (Wide Type)(#5301-)
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***65 | Bolt,(Without Rops) | 8 |
| 01***16 | Nut - M20 | 8 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Track : Travel Motor
| 25***50 | Seal,Oil (Kit) | 1 |
| 25***60 | O-Ring (Kit) | 1 |
| 25***70 | O-Ring (Kit) | 1 |
Work Equipment Control System
Komatsu : Jv40cw-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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Hst Piping (Neutral Valve Line)(#5001-5300)
| 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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Hst Piping (Neutral Valve Line)(#5301-)
| 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 : Jv40cw-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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Oil Spray Piping (For Wide Tire)(#5301-5496)
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Oil Spray Piping (For Wide Tire)(#5497-)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Oil Spray Piping(#5001-5496)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Oil Spray Piping(#5497-)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Vibration Piping (1/2)
| 25***33 | Hose | 2 |
| 25***23 | Elbow | 4 |
| 25***11 | Support | 1 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Vibration Piping (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 : Jv40cw-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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Pump(#5001-5040)
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 26***00 | Pump,Water | 1 |
| 26***30 | Seal | 1 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Pump(#5041-)
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 25***00 | Pump Ass'Y,Water | 1 |
| 25***70 | Casing | 1 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (1/3) (Water Tank To Water Pump To Water Strainer)(#5001-5040)
| 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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (1/3) (Water Tank To Water Pump To Water Strainer)(#5041-5496)
| 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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (1/3) (Water Tank To Water Pump To Water Strainer)(#5497-)
| 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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (2/3) (Water Strainer To Front Nozzle)(#5001-5496)
| 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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (2/3) (Water Strainer To Front Nozzle)(#5497-)
| 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 : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (3/3) (For Wide Tire) (Water Strainer To Rear Nozzle)(#5301-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (3/3) (Water Strainer To Rear Nozzle)(#5001-5300)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Spray Piping (3/3) (Water Strainer To Rear Nozzle)(#5301-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 4 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Tank(#5001-5300)
| 01***20 | Bolt | 12 |
| 01***16 | Screw,(Not Used When Ventilator) | 4 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 4 |
Komatsu : Jv40cw-3(S/N 5001-Up) : Work Equipment Control System : Water Tank(#5301-)
| 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 powers the Komatsu JV40CW-3 (S/N 5001-up)?
A Komatsu 3D84E three-cylinder diesel with mechanical fuel injection, rated around 20.7 kW (27.7 hp) at 2700 rpm and 1.43 L displacement. It has no electronic engine controls or diagnostic fault codes.
What is the operating weight of the Komatsu JV40CW-3?
Approximately 3,600 kg (7,937 lb), reflecting its class as a compact combination roller with a smooth steel front drum and rubber-tired rear axle.
What replaced the Komatsu JV40CW-3?
Komatsu carried the combination-roller concept forward into the later JV40CW-5 generation within its JV compaction-roller lineup. No separately named model is documented as a direct replacement for this specific S/N 5001-up range.
What JV40CW-3(S/N 5001-UP) owners discuss
What do owners say about the JV40CW-3's drive and vibration hydraulics in daily use?
This class of 3.6t combination roller (smooth drum front, rubber-tired rear axle) runs a hydrostatic travel circuit and a separate vibration circuit driven off the engine. Owners of similar 3D84E-powered combination and single-drum rollers report the hydrostatic drive is generally trouble-free if fluid stays clean and cool; the more common complaint is sluggish or uneven travel after the machine sits idle for a season, traced to a drop in charge pressure rather than pump failure. Vibration force and frequency depend on which amplitude and frequency setting is selected, and looking for one universal output figure is a mistake since it varies by configuration and drum mode. If travel or vibration performance drops off, have your dealer verify charge pressure and eccentric shaft bearing condition before assuming the pump or motor is bad.
Are there known quirks with the 3D84E engine specific to this roller?
The 3D84E is a naturally aspirated, direct-injection 3-cylinder diesel shared across a wide range of small Komatsu excavators, loaders, and compaction machines from this era. Across that engine family, the most consistent theme from owners and mechanics is sensitivity to fuel quality: water or dirt in the tank shows up first as hard starting or rough idle rather than smoke, because the mechanical injection pump and injectors on this engine tolerate contamination poorly. Cold-start behavior on 3-cylinder Komatsu diesels of this vintage usually traces to glow plug condition; slow cranking or a hard cold start is more often weak glow plugs or a tired starter and battery than a fuel-system fault. This engine predates ECM-level diagnostics, so troubleshooting stays mechanical: filters, injectors, and a compression check rather than a scan tool.
What undercarriage and drum wear patterns are typical for this machine type?
On combination rollers with a smooth drum front axle and rubber-tired rear axle, the wear pattern discussed most is drum bearing and shaft seal life. If a seal starts weeping, oil migrates into the drum interior where it is invisible from outside, so the bearing can run dry a long time before anyone notices. Mechanics who service this drum type stress greasing the drum support bearings on the interval the operator's manual sets rather than stretching it, since bearing replacement on a vibratory drum is a far bigger job than a missed grease fitting. On the rear tired axle, uneven or one-sided tire wear is the classic sign of a worn axle bearing or misalignment, the same pattern seen on any rubber-tired equipment.
What electrical or sensor issues come up most with this class of machine?
This roller predates modern electronic engine control, so reported "sensor" issues are mostly limited to the charging and starting circuit and to vibration on/off switching. Common complaints echo other diesel compaction equipment of this generation: corroded battery terminals and ground straps causing hard starts or intermittent no-crank conditions, and worn or sticking vibration control switches or solenoids that leave the drum in the wrong amplitude or failing to engage at all. None of this is unique to the JV40CW-3 — it is a pattern seen broadly across compaction equipment of this age, so a no-start or vibration-won't-engage complaint should start with grounds, battery, and the vibration solenoid before deeper hydraulic teardown. Have your dealer verify wiring and solenoid function if the vibration circuit behaves intermittently.
Are there articulated steering or joint wear concerns to know about?
Combination rollers with an articulated frame put steady side load on the articulation joint and steering cylinder pins during turns, and that joint is a routine grease point rather than a set-and-forget item. The pattern seen broadly across articulated compaction and earthmoving equipment is that skipped greasing intervals lead to premature pin and bushing wear, which shows up as looseness or a clunk in the joint and can be mistaken for a leaking steering cylinder when the real cause is joint slop pulling the rod at an angle. Steering and articulation joint condition are safety items on any articulated machine — have your dealer verify pin and bushing wear along with cylinder seal condition rather than just topping off fluid.
Is there much owner discussion specific to the JV40CW-3(S/N 5001-UP)?
Direct owner discussion tied to this exact serial range is thin online. Most available material is specification sheets, dealer listings, and parts or manual sources rather than long-running discussion threads. That fits a lower-volume compaction model and is not itself a sign of hidden problems. The patterns described here are drawn from the well-documented behavior of the 3D84E engine family and of combination rollers in this size class generally, offered as honest general context rather than JV40CW-3-specific anecdotes. For anything serial-specific, check the machine's own service history and confirm with your dealer.
What should a buyer check before purchasing a used JV40CW-3(S/N 5001-UP)?
Start at the drum: look for oil weeping at the shaft seals and listen for bearing roughness or noise when the drum is turned by hand or run at low amplitude. Check the rear tire wear pattern and axle play, and confirm the articulation joint has no excess play and takes grease freely at every point. Start the engine cold if possible — hard cold starting or heavy white smoke on a 3D84E points to injector or compression wear worth pricing into an offer. Run the vibration through its full amplitude and frequency range to confirm clean engagement and disengagement, and check hydrostatic travel in both directions under load for hesitation. Ask for service records showing drum bearing and articulation grease intervals were kept, since those two items are the costliest to neglect. Have your dealer verify any hydraulic, drum bearing, or steering concern found during inspection before finalizing a purchase.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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