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Komatsu JV25CW-2(S/N 1201-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu JV25CW-2 is a vibratory smooth drum roller classified as compaction equipment. It is part of the JV25 series, which includes variants such as the JV25CR-7, JV25DW-2, and JV25W-2. The JV25CW-2 specifically denotes the smooth drum configuration for this model line. Production years and specific predecessor/successor lineage details are not documented in the provided sources. The machine is offered in configurations that may vary by region and emissions package, but specific weight ranges or engine series details for the JV25CW-2 are not explicitly stated in the source text.
Across the Komatsu compaction lineup, generations are distinguished by dash-numbers indicating updates to engines, hydraulics, and emissions tiers. The JV25CW-2 matters in the used and parts market because its specific serial range (S/N 1201-UP) requires matching catalog versions for accurate parts sourcing. The machine's reliability and the availability of Komatsu Genuine Lubricants and KOWA fluid analysis support its longevity. However, specific details on what changed across generations for the JV25CW-2 or its current market significance are not detailed in the provided sources.
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 JV25CW-2(S/N 1201-UP) specifications
Engine
| Model | 3D84E |
| Number of Cylinders | 3 |
| Displacement | 91.3 cu in (1.49 L) |
| Gross Power | 25.4 hp (18.9 kW) @ 2300 rpm |
Weights
| Operating Weight | 5379.3 lb (2440 kg) |
Dimensions
| Overall Length | 8.62 in (0.22 m) |
| Height to Top of Cab | 5.25 ft (1.60 m) |
| Wheelbase | 6.4 in (0.16 m) |
| Ground Clearance | 7.68 in (0.19 m) |
| Drum Diameter | 26.6 in (0.68 m) |
| Drum Width | 47.3 in (1.20 m) |
Performance
| Max Speed | 6.3 mph (10.1 km/h) |
| Vibration Frequency | 55 Hz |
| Centrifugal Force (Medium) | 4630 lb (20.6 kN) |
Service capacities (summary)
| Fuel Capacity | 9.6 gal (36.3 L) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu JV25CW-2(S/N 1201-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 JV25CW-2(S/N 1201-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA fluid analysis at every major service interval to monitor engine oil wear metals, hydraulic fluid particle count, and coolant pH levels. The JV25CW-2 relies on Komatsu Genuine Lubricants to maintain component life. Track KOMTRAX telematics data for load frequency and fault codes to anticipate failures. Collect samples at 500-hour and 1,000-hour intervals to detect early signs of pump or valve wear in the hydraulic system. Monitor DEF levels daily to ensure Tier 4 compliance and prevent engine derating.
Corrective & Common Repairs
Address intermittent starting or dashboard failures by checking the ECM power supply and sensor circuits. Replace worn hydraulic seals to fix leaks in cylinders or lines. Inspect and replace worn track rollers, idlers, and sprockets to maintain undercarriage integrity. Clean or replace the air filter outer element to prevent engine performance issues. Check the fuel delivery system for injector wear or restriction if power loss occurs. Verify brake function and replace worn pads during comprehensive inspections.
Overhaul & Rebuild Points
Perform comprehensive component evaluation at 2,000-hour intervals. Replace hydraulic hoses and filters as part of major service. Inspect the swing machinery and travel system for wear. Check final drive oil for contamination and change as needed. Evaluate the turbocharger and engine valves. At higher hours, inspect the swing circle and undercarriage for critical wear. Replace key components to maintain peak performance. Follow factory specifications for fluid capacities and filter types to ensure proper operation.
Seasonal & Environment Servicing
In cold weather, check coolant concentration and DEF levels to prevent freezing. Ensure the fuel separator is drained regularly to remove water. In dusty environments, inspect the air filter more frequently and clear debris from radiator fins. Protect hydraulic hoses from UV damage and abrasion. Verify track tension and shoe condition for varying ground conditions. Check battery terminals and alternator function. Ensure all safety lights and alarms are operational for visibility in low-light or adverse weather conditions.
JV25CW-2(S/N 1201-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| YM129100-55650 | Element,Fuel Filter | Fuel system service | Check fitment → |
| YM129052-55620 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| YM121120-12900 | Element | Scheduled service item | Check fitment → |
| 258-81-25400 | Filter Ass'Y | Scheduled service item | Check fitment → |
| 266-81-72280 | Filter | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
JV25CW-2(S/N 1201-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor and backup speed sensor failure | Faulty speed sensor, broken wiring harness, or corroded connector at the pin connector | Replace the speed sensor and verify voltage at the pin connector |
| CA451 | Common rail pressure sensor feedback value too high | Malfunction in the rail pressure sensor or actual overpressure condition in the fuel system | Diagnose the fuel rail pressure sensor and check pump lines |
| CA122 | Intake air pressure sensor feedback voltage too high | Faulty intake pressure sensor or wiring issue | Verify the intake pressure sensor operation and inspect wiring |
| CA123 | Intake air pressure sensor feedback voltage too low | Sensor short circuit or airflow restriction in the intake system | Check for a sensor short or inspect for airflow restrictions |
| CA153 | Intake air temperature sensor feedback voltage too high | Faulty intake air temperature (IAT) sensor | Replace or test the IAT sensor |
| CA154 | Intake air temperature sensor feedback voltage too low | Faulty intake air temperature (IAT) sensor or circuit issue | Replace or test the IAT sensor |
| CA441 | Battery voltage too low | Weak battery, failing alternator, or voltage regulator issue | Replace the alternator or battery and check the voltage regulator |
| CA442 | Battery voltage too high | Failing alternator or voltage regulator causing overcharging | Replace the alternator or battery and check the voltage regulator |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration and inspect engine load cycle |
| CA111 | Internal engine controller fault | Critical failure within the Electronic Control Module (ECM) | Replace or reprogram the ECM |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
JV25CW-2(S/N 1201-UP) attachments & work tools
Vibration System
The JV25CW-2 is a vibratory smooth drum roller equipped with a single front drum. The system provides a centrifugal force of 4630 lb (2060 kg) at a vibration frequency of 55 Hz. This configuration is standard for the model to provide compaction on asphalt and soil surfaces.
Drum Specifications
The front drum has a width of 47.3 in (120 cm) and a diameter of 26.6 in (67.6 cm). The drum is smooth, not padded or spiked, designed for finishing and compacting granular materials and asphalt. The drum is mounted on the front axle assembly.
Engine Configuration
The machine uses a Komatsu 3D84E engine with 3 cylinders. The gross power output is 25.4 hp (18.9 kW) at 2300 rpm. The engine displacement is 91.3 cu in (1.49 L). This engine powers the hydraulic pump for the vibration system and travel motors.
Operational Weight
The operating weight is 5379.3 lb (2440 kg). This weight provides the static line load necessary for compaction. The weight is distributed between the front drum and the rear wheels, with the drum providing the primary contact area.
Dimensions
The overall length is 8.62 ft (2.63 m). The height to the top of the cab is 5.25 ft (1.60 m). The wheelbase is 6.4 ft (1.95 m). The ground clearance is 7.68 in (19.5 cm). These dimensions allow for maneuverability in tight work zones.
Fluid Capacities
The fuel capacity is 9.6 gal (36.3 L). Specific fluid types for the hydraulic system, engine oil, and final drives are not detailed in the provided source text; refer to the operation and maintenance manual for the JV25CW-2 S/N 1201-UP for exact specifications and capacities.
Travel Speed
The maximum travel speed is 6.3 mph (10.1 km/h). This speed is sufficient for compaction passes on most road construction and paving projects. The travel system is hydraulic, driven by the engine via the main pump.
Cab and Operator Station
The machine features an enclosed cab with a roof height of 5.25 ft (1.60 m) from the ground. The cab provides operator protection and comfort. The specific guarding options or ROPS/FOPS certifications are not detailed in the provided source text; refer to the factory spec sheet for the JV25CW-2 S/N 1201-UP.
All JV25CW-2(S/N 1201-UP) assemblies by section
Every catalogued assembly group for the Komatsu JV25CW-2(S/N 1201-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
3d84e-3e Engine S/N 03098-Up
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Air Cleaner And Mounting
| YM***60 | Bolt,Wing | 1 |
| YM***70 | Seat,Rubber | 2 |
| YM***03 | Seal,Seal | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Air Intake Manifold And Connection
| YM***01 | Heater,Intake Air | 1 |
| YM***00 | Manifold,Air Intake | 1 |
| YM***52 | Screw | 4 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Alternator (40a)
| YM***50 | Brush Ass'Y | 1 |
| YM***00 | Retainer,Bearing | 1 |
| YM***70 | Diode Ass'Y | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Alternator And Mounting (40a)
| YM***30 | Plate,Adjust | 1 |
| YM***02 | Nut | 1 |
| YM***50 | Bolt | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Camshaft And Tappet
| YM***80 | Camshaft Ass'Y | 1 |
| YM***01 | Gear Ass'Y,Camshaft | 1 |
| YM***50 | Bearing, Thrust | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Crankshaft
| YM***00 | Gear,Crank | 1 |
| YM***80 | Parallel Pin | 1 |
| YM***10 | Spring Pin | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Cylinder Block
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Cylinder Head
| YM***31 | Gasket,Head (Kit) | 1 |
| YM***80 | Retainer, Spring | 6 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 3 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Cylinder Head Cover
| YM***20 | Cover, Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***00 | Clip,Breather Hose | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Engine Stop Motor And Mounting
| YM***80 | Ring,Snap | 1 |
| YM***00 | Pin,Cotter | 1 |
| YM***90 | Washer | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Exhaust Manifold And Muffler
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Flywheel And Flywheel Housing
| YM***00 | Gear,Ring | 1 |
| YM***02 | Screw | 6 |
| YM***80 | Parallel Pin | 4 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Front Cover And Gear
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***52 | Bolt | 4 |
| YM***40 | O-Ring,Drain Plug | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Fuel Filter And Piping
| YM***70 | Union | 1 |
| YM***00 | Hose | 2 |
| YM***00 | O-Ring (Kit) | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Fuel Injection Pump (Governor) (1/2)
| YM***00 | Spring, Regulator | 1 |
| YM***50 | Screw | 1 |
| YM***02 | Lever Ass'Y,Stop | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-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 : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Fuel Injection Pump (Pump) (1/2)
| YM***50 | Kit, Shim | 1 |
| YM***10 | Plate? Caution | 1 |
| YM***50 | Cover,Side | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Fuel Injection Pump (Pump) (2/2)
| YM***70 | Retainer, Spring | 3 |
| YM***02 | Screw | 2 |
| YM***00 | Valve,Delivery | 3 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Fuel Injection Pump And Piping
| YM***20 | Retainer, Pipe | 1 |
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***02 | Nut | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Fuel Nozzle And Spill Pipe
| YM***20 | Spring | 1 |
| YM***00 | Fuel Injection Nozzle, Assembly | 1 |
| YM***80 | Pipe | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-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 : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Lubricating Oil Filter And Mounting
| YM***50 | Nut | 1 |
| YM***00 | Valve,Relief | 1 |
| YM***02 | Bolt Plated | 3 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-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 : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Oil Pan
| YM***40 | Oil Pan Ass'Y | 1 |
| YM***52 | Screw | 2 |
| YM***52 | Screw | 20 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : P.P.C. Pump And Mounting
| YM***64 | Bearing,Ball | 2 |
| YM***50 | Bracket | 1 |
| YM***02 | Stud | 4 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Piston And Connecting Rod
| YM***00 | Screw | 2 |
| YM***00 | Crank Pin Metal A. (Std) | 1 |
| YM***00 | Piston Ass'Y | 3 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Ribbon Heater Timer And Safety Relay
| YM***00 | Relay, Safety | 1 |
| YM***20 | Timer,Ribbon Heater | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Rocker Arm
| YM***02 | Screw | 6 |
| YM***80 | Spring | 3 |
| YM***50 | Rocker Arm Ass'Y | 6 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Starting Motor
| YM***10 | Pinion Clutch Ass'Y | 1 |
| YM***20 | Housing,Center | 1 |
| YM***40 | Field Coil Ass'Y | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Starting Motor And Mounting
| YM***52 | Bolt Plated | 2 |
| (Y***0) | Starting Motor Ass'Y,(See Fig.0661) | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-Up : Tool
| YM***70 | Wrench | 1 |
| YM***20 | Wrench | 1 |
| YM***50 | Screw Driver | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : 3d84e-3e Engine S/N 03098-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 : Jv25cw-2(S/N 1201-Up) : Control System : Brake Pedal And Linkage
| 01***16 | Bolt,(For Slag Handling) | 5 |
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Forward And Reverse Control Lever
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 11 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Fuel Control Lever
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***50 | Capscrew | 1 |
| 01***30 | Bolt | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Cylinder
| 07***65 | O-Ring,Injection Pump Case | 1 |
| 07***60 | O-Ring,(F4350-59a0 -6 ) | 1 |
| 07***26 | Nut, Nylon | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Cylinder Mounting Parts
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 04***18 | Ring, Snap | 4 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Piping (1/5) (Suction Line)
| 01***20 | Bolt (Itl) | 3 |
| 01***19 | Washer,(Not Used With Ventilator) | 3 |
| 07***23 | Clamp | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Piping (2/5) (Delivery Line)
| 01***20 | Bolt (Itl) | 3 |
| 01***19 | Washer,(Not Used With Ventilator) | 3 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Piping (3/5) (Bypass Filter Line)
| 01***60 | Bolt | 2 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 2 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Piping (4/5) (Steering Valve Line)
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 1 |
| 25***23 | Elbow | 1 |
| 25***23 | Elbow | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Piping (5/5) (Steering Cylinder Line)
| 25***23 | Elbow | 1 |
| 25***13 | Elbow | 2 |
| 25***23 | Adapter | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Valve
| 25***01 | Control Ass'Y | 1 |
| 25***10 | Spring | 1 |
| 25***00 | Plug Ass'Y | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Control System : Steering Wheel
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***11 | Nut - Mounting | 1 |
Engine Related Parts And Electrical System
Komatsu : Jv25cw-2(S/N 1201-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Front Frame Line)
| 01***12 | Bolt - Front Cover Mounting | 3 |
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Engine Related Parts And Electrical System : Electrical System (2/2) (Rear Frame Line)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 6 |
| 01***16 | Screw, Mount Parking Lights | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Engine Related Parts And Electrical System : Engine And Pump Mounting Parts(#1201-1321)
| 01***20 | Bolt,(For Mono Lever Steering) | 12 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 12 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Engine Related Parts And Electrical System : Engine And Pump Mounting Parts(#1322-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 12 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 12 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Engine Related Parts And Electrical System : Exhaust Related Parts
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***85 | Bolt,Spring | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Engine Related Parts And Electrical System : Fuel Tank(#1201-1321)
| 01***14 | Screw | 5 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 5 |
| 25***23 | Cap | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Engine Related Parts And Electrical System : Fuel Tank(#1322-)
| 01***14 | Screw | 5 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 5 |
| 25***40 | Nipple | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Engine Related Parts And Electrical System : Radiator And Mounting Parts
| 01***12 | Bolt - M8 - 1.25 X 12 | 6 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
Guard
Komatsu : Jv25cw-2(S/N 1201-Up) : Guard : Center Pin
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***13 | Nut,(For Adjustable Rod) | 8 |
| 01***14 | Nut (Itl) | 1 |
Komatsu : Jv25cw-2(S/N 1201-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 : Jv25cw-2(S/N 1201-Up) : Guard : Front Frame And Cover (1/2)
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 12 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Guard : Front Frame And Cover (2/2)
| 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 : Jv25cw-2(S/N 1201-Up) : Guard : Operator'S Seat
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 8 |
Komatsu : Jv25cw-2(S/N 1201-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 | 6 |
Mark Plate And Tool
Komatsu : Jv25cw-2(S/N 1201-Up) : Mark Plate And Tool : Marks And Plates (English)(#1322-)
| 09***21 | Plate? Caution,Fuel Inlet | 1 |
| 09***10 | Plate? Safety,Hydraulic Tank Cap | 1 |
| 09***01 | Plate? Caution,Radiator | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Mark Plate And Tool : Tool
| 07***00 | Pump,Grease | 1 |
| 07***04 | Cartridge,Grease | 1 |
| 07***00 | Nozzle,(For Rubber Shoe) | 1 |
Track
Komatsu : Jv25cw-2(S/N 1201-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 | 40 |
Komatsu : Jv25cw-2(S/N 1201-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 : Jv25cw-2(S/N 1201-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 : Jv25cw-2(S/N 1201-Up) : Track : Rear Drive Motor And Chain
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***40 | Bolt,(For Slag Handling) (For Usa) | 2 |
| 01***50 | Bolt,(For D60pl) | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Track : Rear Scraper
| 01***40 | Bolt (Op) | 12 |
| 01***40 | Bolt,(For Slag Handling) (For Usa) | 2 |
| 01***65 | Bolt,(With Cab) | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Track : Rear Tire
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***60 | Bolt, Tube To Oil Cooler | 8 |
| 01***60 | Washer,(For Large Size Tire) | 8 |
Work Equipment Control System
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hst Pump (1/6) (Pump)
| 01***75 | Bolt | 6 |
| 01***25 | Bolt | 4 |
| 07***09 | O-Ring,(F4350-61a0 -33 ) | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hst Pump (2/6) (Shaft Ass'Y)
| 26***00 | Shaft Ass'Y | 1 |
| 26***10 | Shaft | 1 |
| 26***20 | Shim | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hst Pump (3/6) (Rotary Ass'Y)
| 26***00 | Rotary Ass'Y | 1 |
| 26***10 | Piston | 9 |
| 26***20 | Block | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hst Pump (4/6) (Hanger Ass'Y)
| 01***16 | Bolt (Op) | 4 |
| 26***00 | Hanger Ass'Y | 1 |
| 26***10 | Hanger | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hst Pump (5/6) (Cover Ass'Y)
| 01***35 | Bolt | 4 |
| 07***18 | O-Ring,(See Fig.1601-29?1602-17) | 1 |
| 07***07 | O-Ring - (K10) | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hst Pump (6/6) (Control Cylinder)
| 01***32 | Bolt | 4 |
| 01***40 | Bolt | 1 |
| 01***50 | Bolt | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Htdraulic 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 : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hydraulic Piping (Bypass Valve Line)
| 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 : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hydraulic Piping (Hst Pump Line)
| 25***14 | Elbow | 3 |
| 25***24 | Elbow | 2 |
| 25***14 | Elbow | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hydraulic Piping (Neutral Valve Line)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***90 | Bolt,With Cover | 3 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 5 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hydraulic Piping (Oil Cooler Line)
| 07***20 | O-Ring,Relief Valve | 2 |
| 25***14 | Elbow | 1 |
| 25***23 | Elbow | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hydraulic Piping (Rear Drive Motor Line)
| 01***25 | Bolt,(Rear Attachment Less) | 6 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 6 |
| 01***16 | Washer,(For 35a Alternator) | 6 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hydraulic Piping (Travel Motor Line)
| 25***14 | Elbow | 4 |
| 25***22 | Elbow | 2 |
| 26***02 | Elbow | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hydraulic Piping (Vibration Motor Line)
| 25***12 | Elbow | 2 |
| 25***23 | Elbow | 4 |
| 26***79 | Hose | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Hydraulic Piping (Vibration Valve Line)
| 01***90 | Bolt,With Cover | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Oil Spray Piping(#1201-1321)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Oil Spray Piping(#1322-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Travel Motor
| 25***10 | Plate,Friction | 6 |
| 25***21 | Plate,Separate | 7 |
| 26***00 | Motor,Travel | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Water Filter
| 27***00 | Filter Ass'Y,Water | 1 |
| 27***20 | Case | 1 |
| 27***80 | O-Ring | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Water Piping (1/3) (Suction And Filter Line)(#1201-1321)
| 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 : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Water Piping (1/3) (Suction And Filter Line)(#1322-)
| 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 : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Water Piping (2/3) (Front Nozzle Line)(#1201-1321)
| 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 : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Water Piping (2/3) (Front Nozzle Line)(#1322-)
| 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 : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Water Piping (3/3) (Rear Nozzle Line)
| 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 : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Water Pump
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 25***00 | Pump Ass'Y,Water | 1 |
| 25***70 | Casing | 1 |
Komatsu : Jv25cw-2(S/N 1201-Up) : Work Equipment Control System : Water Tank
| 01***16 | Bolt - Box Mounting | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***20 | Bolt | 12 |
JV25CW-2(S/N 1201-UP) serial number reference
The PIN plate on the JV25CW-2 is located on the right-hand side of the cab on the lower frame, typically behind the front idler or beneath the operator's window. Read the prefix as the first three characters of the 17-character ISO PIN stamped on the emissions/export plate.
| Prefix | Identifies | Notes |
|---|---|---|
| JV25CW-2 | Vibratory Smooth Drum Roller | S/N 1201-UP. Factory parts catalog and operation manual confirm this model designation for the specified serial range. No 3-character PIN prefixes are documented for this specific serial range in the provided sources; the model code serves as the primary identifier. |
Frequently asked questions
What engine does the Komatsu JV25CW-2 use?
The specific engine designation for the Komatsu JV25CW-2 is not documented in the provided sources. Sources mention Komatsu industrial engines generally but do not link a specific model to the JV25CW-2 serial range.
What is the operating weight of the Komatsu JV25CW-2?
The operating weight for the Komatsu JV25CW-2 is not specified in the provided sources. The sources list weight ranges for other equipment classes but do not provide a value for this specific roller model.
What model replaced the Komatsu JV25CW-2?
The successor model to the Komatsu JV25CW-2 is not documented in the provided sources. The sources mention the JV25-3 in the context of transport but do not confirm it as the direct replacement for the JV25CW-2.
What JV25CW-2(S/N 1201-UP) owners discuss
What are the known powertrain and hydraulic behaviors for the Komatsu JV25CW-2 (S/N 1201-UP)?
The JV25CW-2 is a vibratory smooth drum roller, not a hydraulic excavator. Community consensus on Komatsu powertrain reliability notes that the line is generally designed to wear out complete machines simultaneously; if the hydraulic pump fails, the engine is often not far behind. This wear pattern contributes to lower resale values for the series. Operators report that Komatsu machines are smooth to run and fuel-efficient compared to early-series competitors, but the hydraulic system is sensitive to contamination. Slow heating or weak performance is often traced to the main safety valve or pressure relief valve rather than the pump itself. The machine relies on a closed-loop hydraulic system for travel and a separate circuit for the vibratory drum. If the drum vibrates weakly when hot, check hydraulic oil viscosity and internal leakage in the swing or travel motors, as these are common failure points in the series. Have your dealer verify the specific hydraulic circuit pressures for the vibratory system, as they vary by configuration/series.
What undercarriage or wear patterns are typical for this machine type?
As a roller, the JV25CW-2 does not have a traditional crawler undercarriage with tracks and rollers. Instead, it uses a steel smooth drum for compaction. Wear patterns focus on the drum shell, vibration bearings, and the axle assemblies. Operators report that drum shell wear is accelerated by abrasive materials like concrete or asphalt with high aggregate content. The vibration system’s eccentric shafts and bearings are critical wear items; failure here causes excessive noise and loss of compaction force. Bushings and bearings on the linkage arms are subject to significant wear and require regular greasing to prevent premature failure. Track tension is not applicable, but drum alignment and axle seal integrity are critical for preventing oil leaks and maintaining compaction quality. Have your dealer verify the drum shell thickness and bearing clearance against factory specs.
What engine quirks are associated with this series?
The JV25CW-2 series typically utilizes a Komatsu diesel engine, often in the SAA4D94 or similar series for this class of roller. Common engine quirks include oil burning due to dirty air filters, gas channeling, or the use of non-standard oil. Owners report that engine performance issues, such as power loss and increased fuel usage, often signal airflow restriction, injector wear, or failing fuel delivery components. Overheating is a frequent complaint, usually caused by a blocked cooling package (radiator, hydraulic oil cooler, charge-air cooler) rather than internal engine failure. The engine is sensitive to fuel quality; water in the fuel separator can cause starting issues and power loss. Regular inspection of the cooling package for packed debris is essential. Have your dealer verify the engine model and emissions tier for your specific serial number.
What are common electrical or sensor issues?
Komatsu equipment relies heavily on electronic control systems. Common electrical issues include intermittent starting, dashboard failures, and random shutdowns. These are often triggered by a single faulty sensor or an unstable power supply. Owners report that multiple warning signals can appear simultaneously due to sensor malfunctions. The machine’s electronic control unit (ECU) monitors hydraulic pressure, engine temperature, and drum vibration frequency. Faulty sensors can lead to incorrect system responses, such as derating or failure to engage the vibratory system. Grounding issues and corroded connectors are frequent culprits for erratic behavior. Regular inspection of the battery, main grounds, and sensor connectors is recommended. Have your dealer verify the integrity of the ECU wiring harness and sensor grounds.
What to check when buying a used JV25CW-2 (S/N 1201-UP)?
When purchasing a used JV25CW-2, prioritize the following checks: 1) Drum integrity: Inspect the drum shell for cracks, excessive wear, or weld repairs. Check the vibration bearings for noise and play. 2) Hydraulic system: Test the vibratory drum’s performance when cold and hot. Weak performance when hot indicates internal leakage. Check for leaks in the hydraulic lines and hoses. 3) Engine: Verify the engine starts cold and hot. Check for oil burning and excessive smoke. Inspect the cooling package for blockages. 4) Electrical: Test all dashboard functions, warning lights, and sensor readings. Ensure the ECU has no stored fault codes. 5) Axles and linkages: Check axle seals for leaks and linkage bushings for wear. 6) Serial number verification: Confirm the serial number matches the machine’s documentation and specifications. Have your dealer verify the machine’s specific configuration and service history.
What are the recommended fluid specifications for the JV25CW-2?
Komatsu recommends using Komatsu Genuine Lubricants and Coolants for optimal performance and component life. For the hydraulic system, Komatsu EO (Engine Oil) or equivalent high-quality hydraulic oil is specified. For the engine, Komatsu TO (Turbocharged Oil) or AXO (Advanced Xtra Oil) is recommended. For the cooling system, Komatsu Super-coolant AF-NAC is specified. For the final drive and axle assemblies, Komatsu HO (Hydraulic Oil) or equivalent gear oil is used. Always verify the exact fluid specifications for your machine’s serial number and configuration, as they can vary. Have your dealer verify the correct fluid types and capacities for your specific unit.
What are the common maintenance intervals for the JV25CW-2?
Komatsu maintenance schedules typically specify intervals ranging from every 10 hours to every 4,000 hours of operation. Daily checks include engine oil level, coolant level, hydraulic oil level, and fuel water separator. Greasing of linkage bushings and bearings is required frequently, often daily or every 10 hours. Hydraulic oil and filter changes are typically recommended every 500-1,000 hours, depending on operating conditions. Engine oil and filter changes are usually every 250-500 hours. Coolant changes are typically every 2,000-4,000 hours. Always consult the operation and maintenance manual for your specific serial number and configuration, as intervals can vary. Have your dealer verify the maintenance schedule for your machine.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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