Komatsuhydraulic excavatorsmall ( - pc90)
Komatsu PC25-1(S/N 1001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC25-1 (S/N 1001-UP) is a 2.5-3 metric ton canopy-class mini hydraulic excavator, one of Komatsu's original compact excavator entries alongside the early PC20, PC30, and PC40 lines. It runs a Komatsu 3D84-series diesel (suffix cataloged variously as 3D84-2, 3D84-2D, or 3D84-3 depending on source), a naturally aspirated, water-cooled 3-cylinder engine of approximately 1.4 L displacement; some documentation cross-references the same base engine under the Yanmar 3TN84L-RBA designation. Rated output is reported as a rating-method spread of roughly 20.9 kW (28 hp) at 2,700 rpm on one standard versus 17.9 kW (24 hp) at 2,300 rpm on another. Operating weight runs about 2,950 kg (6,505 lb) on a steel-tracked undercarriage with 300 mm shoes and a 9.5 rpm swing speed. Komatsu built this chassis through the early-to-mid 1990s as a fixed-boom, ROPS-canopy machine offered with a rear dozer blade and a range of bucket widths for trenching, landscaping, and confined-access utility work.
Komatsu kept the PC25-1 designation unchanged through its production run while neighboring classes in the same family moved on: factory documentation groups it first with the PC30-1/PC40-1/PC45-1 line and later with the PC30-7/PC40-7/PC45-1 line, meaning the PC30 and PC40 siblings picked up dash-number updates while the PC25 kept the same basic mechanical layout. Komatsu eventually retired this conventional-tailswing PC25 chassis in favor of a later, unrelated radius-tailswing design that reused the "25" number on a different engine and undercarriage - that newer machine is a separate model, not a running change to this one. In today's used and parts market the PC25-1 is valued as a simple, mechanically governed machine with nothing electronic to fail: demand centers on undercarriage wear items, cylinder seal kits, and mechanical fuel-system parts, and used units mostly go to light utility and rental-fleet work where low cost and easy field repair matter more than modern comfort or emissions equipment.
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 PC25-1(S/N 1001-UP) specifications
Engine
| Engine model | Komatsu 3D84-series diesel (suffix cataloged variously as 3D84-2, 3D84-2D, or 3D84-3 depending on source; some documentation cross-references it under the Yanmar 3TN84L-RBA designation), 3-cylinder, water-cooled, indirect injection |
| Displacement | 1.429 L (87.2 cu in), bore x stroke 84 mm x 86 mm (3.31 in x 3.39 in) |
| Rated power | Documented at 20.9 kW (28 HP) at 2,700 rpm on one factory record and 17.9 kW (24 HP) at 2,300 rpm on another for the same base engine; treat as a rating-method spread (gross vs net) rather than two different engines |
| Emissions tier | Pre-emissions era; predates Tier 1/EPA off-road diesel certification, mechanically governed fuel system |
Weights
| Operating weight | 2,950 kg (6,505 lb) |
| Ground pressure | Not documented for this serial range in available literature — verify with dealer or shop manual |
| Transport weight | No separate transport-configuration weight documented; treat as equal to operating weight |
Dimensions
| Overall transport length | 4,800 mm (15 ft 9 in) |
| Overall transport width | 1,540 mm (5 ft 1 in) |
| Overall transport height | 2,400 mm (7 ft 10 in) |
| Track shoe width | 300 mm (11.8 in), steel shoes |
| Undercarriage/track length | 2,000 mm (6 ft 7 in) |
| Tail swing radius, ground clearance | Not documented for this serial range in available literature — verify with dealer or shop manual |
Performance
| Swing speed | 9.5 rpm |
| Travel speed, high/low | 3.6 km/h (2.2 mph) / 2.3 km/h (1.4 mph) |
| Max dig depth, max reach, max dump height, max cutting height, gradeability, drawbar pull | Not documented for this serial range in available literature — verify with dealer or shop manual |
Forces
| Bucket and arm/stick digging force | Not documented for this serial range in available literature — verify with dealer or shop manual |
Service capacities (summary)
| Fuel tank, hydraulic system, engine oil, cooling system | Not documented for this serial range in available literature — verify with dealer or shop manual |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC25-1(S/N 1001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (3D84-series diesel, with filter) | Not published for S/N 1001-UP in sources checked; consult the OMM or a Komatsu dealer for the exact factory figure. | Komatsu genuine engine oil (EO), diesel engine oil, grade picked from the OMM's ambient-temperature chart — lighter viscosity (roughly SAE 10W or 10W-30) in cold weather, heavier (15W-40 or 30) in hot weather. |
| Cooling system | Not published for S/N 1001-UP in sources checked; consult the OMM or a Komatsu dealer for the exact factory figure. | Komatsu genuine antifreeze/coolant (permanent-type ethylene-glycol), mixed with water per the OMM's cold-weather concentration table; supplemental coolant additive per Komatsu's maintenance interval. |
| Fuel tank | Not published for S/N 1001-UP in sources checked; consult the OMM or a Komatsu dealer for the exact factory figure. | Diesel fuel selected by ambient temperature per the OMM's fuel chart (lighter/winter-grade diesel in cold climates, standard-grade in warm climates). |
| Hydraulic system total and hydraulic tank | Not published for S/N 1001-UP in sources checked; consult the OMM or a Komatsu dealer for the exact factory figure. | Komatsu genuine hydraulic oil, viscosity grade selected from the OMM's ambient-temperature chart for the hydraulic circuit. |
| Final drive (each) | Not published for S/N 1001-UP in sources checked; consult the OMM or a Komatsu dealer for the exact factory figure. | Komatsu genuine powertrain/gear oil (TO), grade per the OMM's final-drive lubrication table. |
| Swing drive | Not published for S/N 1001-UP in sources checked; consult the OMM or a Komatsu dealer for the exact factory figure. | Komatsu genuine powertrain/gear oil (TO), grade per the OMM's swing-machinery lubrication table. |
| Grease (spec only) | Applied at pins, bushings, and the swing bearing per the periodic (100-hour) lubrication chart; no reservoir capacity. | Komatsu genuine multipurpose grease, NLGI 2 lithium-base EP grease. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC25-1(S/N 1001-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the PC25-1(S/N 1001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
The PC25-1 carries no ECM and reports only oil-pressure and charge-lamp warnings, so scheduled oil sampling is the main way to catch problems early. Pull samples from the engine pan, both final drive cases, the swing machinery case, and the hydraulic tank at each drain interval; watch for metal fines or coolant intrusion in the 3D84-series's oil. This machine runs one small hydraulic tank feeding boom, arm, bucket, swing, and travel circuits, so contamination spreads fast - track particle counts and keep the mechanical injection pump's fuel supply clean.
Corrective & Common Repairs
Most PC25-1 repairs trace to two areas: the steel undercarriage and cylinder seals. Expect sprocket, roller, and idler wear on machines run on abrasive or rocky ground, plus track sag from bushing wear on the 300 mm shoes. Boom, arm, and bucket cylinder rod seals weep after years of pin-and-bushing side load; reseal rather than mask it with grease. The mechanical fuel injection pump and governor linkage on the 3D84-series drift out of adjustment over time - rough idle or power loss usually clears with a governor and injector service.
Overhaul & Rebuild Points
The PC25-1 predates emissions electronics, so a 3D84-series engine rebuild is a straightforward mechanical job: bearings, rings, valve guides, and injector reconditioning, no controller to reflash. Swing and travel motor assemblies wear internally after a decade-plus of service; check case drain flow and internal leakage before committing to a full motor rebuild. Main pump and control valve spool wear shows up as slow, mushy work equipment response - test relief pressures first. Undercarriage rebuilds (sprockets, rollers, idlers, track links) remain the most common rebuild point on high-hour units.
Seasonal & Environment Servicing
Cold-weather starting on the mechanically governed 3D84-series depends on glow-plug/cold-start aid condition and correct engine oil viscosity; switch to a lighter grade and check block-heater or intake-air preheat function before winter. Check antifreeze protection ahead of freezing weather - this small cooling system has little margin for error. In hot, dusty environments, clean the radiator and oil cooler fins more often than the standard 500-hour interval and inspect the air cleaner element for early clogging. Wet or muddy sites accelerate track pin and bushing wear, so tighten undercarriage inspection intervals.
PC25-1(S/N 1001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 20T-98-72410 | Plate? Caution,Engine Fuel Filter | Fuel system service | Check fitment → |
| 20T-98-73410 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| 07000-02135 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 07000-02080 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 20T-98-72460 | Plate? Caution,Engine Oil Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC25-1(S/N 1001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Oil pressure caution lamp (oil can symbol, red) | Engine lube oil pressure below the safe minimum | Low oil level, clogged oil filter, worn oil pump, or the engine idling too low right after a cold start | Stop the engine at once, check oil level and top up to the dipstick mark, then inspect the filter and oil pump before restarting |
| Charge (battery/alternator) caution lamp | Charging circuit is not putting current back into the battery | Loose, glazed, or broken fan/alternator belt, a faulty alternator, or a bad connection in the charging circuit | Check belt tension and condition first, then test alternator output and battery terminal connections |
| Coolant temperature gauge in red zone | Engine coolant temperature above normal operating range | Low coolant level, radiator fins clogged with debris, a slipping or broken fan belt, or a stuck thermostat | Let the engine idle to cool down, then check coolant level once safe and inspect the radiator and belt |
| Hydraulic oil temperature gauge in red zone | Hydraulic oil running hotter than normal operating range | Low hydraulic oil level, a clogged oil cooler, or sustained relief-valve operation from an overloaded circuit | Ease off the work load and let the system idle to cool, then check oil level and clean the cooler fins |
| Glow (preheat) indicator lamp | Shows the glow-plug preheat cycle status ahead of a cold start | Normal preheat cycle; a lamp that stays on too long or never lights points to a weak battery or a faulty glow plug/relay | Let the lamp complete its normal preheat cycle before cranking; if it will not light, check battery voltage and the glow-plug circuit |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
PC25-1(S/N 1001-UP) attachments & work tools
Buckets
General-duty digging buckets run 305-915 mm (12-36 in) wide, matched to this light 2.5 t class carrier. Capacity falls roughly in the 0.03-0.09 m3 range depending on width. Standard buckets are pin-on, using about 35 mm pins on roughly 195 mm centers; no dedicated rock/HD bucket line is documented for this weight class, only general-duty digging and ditching profiles.
Hydraulic hammers
Breaker fitment for this size machine falls in the light mini-hammer bracket built for 1.5-3.5 t carriers, roughly 60-130 kg breaker weight. These breakers draw off the excavator's auxiliary circuit at medium pressure and modest flow, not a high-flow skid-steer-style circuit.
Quick couplers
Mechanical pin-grabber/wedge couplers sized for 2-3 t carriers are the common fitment, using pins around 30-35 mm diameter. A powered hydraulic coupler circuit is not standard on this canopy-class machine; most units run pin-on buckets straight off the arm.
Thumbs/grapples
A hydraulic thumb kit pairs with the digging bucket for handling rock, brush, and demolition debris; it shows up as a common aftermarket or dealer-fitted add-on rather than factory-standard equipment. No dedicated grapple attachment is documented for this class.
Rippers
A single-shank ripper tooth, pin-mounted in place of the bucket, is offered for this weight class for light frost or shale breaking. Scale limits it to light ground work, not heavy ripping duty.
Hydraulic-kit notes
An auxiliary hydraulic kit (piping and control valve) is available to power a breaker or thumb on this machine. Flow and pressure stay in the light/medium range typical of a 2.5 t excavator rather than a high-flow circuit, and factory fitment varies by unit, so verify the aux circuit is present before ordering powered attachments.
All PC25-1(S/N 1001-UP) assemblies by section
Every catalogued assembly group for the Komatsu PC25-1(S/N 1001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
3d84-2d Engine S/N 00292-Up
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Air Cleaner And Mounting (Double Element Type)(#03321-)
| YM***41 | Buffle | 1 |
| YM***10 | Cap | 1 |
| YM***30 | Pan,Dust | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Air Cleaner And Mounting (Single Element Type)(#03321-)
| YM***41 | Buffle | 1 |
| YM***10 | Cap | 1 |
| YM***30 | Pan,Dust | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Air Intake Manifold And Connection(#03321-)
| YM***01 | Heater,Intake Air | 1 |
| YM***00 | Manifold,Air Intake | 1 |
| YM***11 | Gasket,Intake Manifold | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Alternator (40a)(#03321-)
| YM***50 | Brush Ass'Y | 1 |
| YM***00 | Retainer,Bearing | 1 |
| YM***70 | Diode Ass'Y | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Alternator And Mounting (40a)(#03321-)
| YM***30 | Plate,Adjust | 1 |
| YM***02 | Nut | 1 |
| YM***02 | Nut | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Camshaft And Tappet(#03321-)
| YM***80 | Camshaft Ass'Y | 1 |
| YM***01 | Gear Ass'Y,Camshaft | 1 |
| YM***50 | Bearing, Thrust | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Crankshaft(#03321-)
| YM***00 | Gear,Crank | 1 |
| YM***80 | Parallel Pin | 1 |
| YM***01 | Ball,Steel | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Cylinder Block(#03321-)
| YM***20 | Plug,Drain(Without Oil Cooler Type) | 1 |
| YM***20 | Screw | 8 |
| YM***00 | Plug | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Cylinder Head Cover(#03321-)
| YM***20 | Cover, Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***00 | Clip,Breather Hose | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Cylinder Head(#03321-)
| YM***80 | Retainer, Spring | 6 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 3 |
| YM***10 | Valve,Exhaust | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Engine Stop Motor And Mounting(#03321-18427)
| YM***80 | Ring,Snap | 1 |
| YM***00 | Pin,Cotter | 1 |
| YM***90 | Washer | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Engine Stop Motor And Mounting(#18428-)
| YM***20 | Motor Ass'Y,Engine Stop | 1 |
| YM***80 | Ring,Snap | 1 |
| YM***00 | Pin,Cotter | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Exhaust Manifold And Muffler(#03321-)
| YM***00 | Manifold,Exhaust | 1 |
| YM***22 | Stud | 4 |
| YM***10 | Muffler | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Flywheel And Flywheel Housing(#03321-)
| YM***02 | Screw | 6 |
| YM***02 | Screw | 4 |
| YM***80 | Parallel Pin | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Front Cover And Gear(#03321-)
| YM***90 | Front Cover Ass'Y | 1 |
| YM***10 | Washer,Seal | 7 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Fuel Filter And Piping(#03321-)
| YM***70 | Union | 1 |
| YM***10 | Hose,(See Fig.0415-17?0416-17) | 1 |
| YM***00 | O-Ring (Kit) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Fuel Injection Pump (Governor) (1/2)(#03321-)
| YM***02 | Lever Ass'Y,Stop | 1 |
| YM***10 | Pin,Stop Lever | 1 |
| YM***00 | O-Ring (Kit) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Fuel Injection Pump (Governor) (2/2)(#03321-)
| YM***01 | Weight Assembly., Governor | 1 |
| YM***90 | Shaft,Governor Lever | 1 |
| YM***50 | Angleich Ass'Y | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Fuel Injection Pump (Pump) (1/2)(#03321-)
| YM***90 | Injection Pump Ass'Y | 1 |
| YM***50 | Kit, Shim | 1 |
| YM***10 | Plate? Caution | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Fuel Injection Pump (Pump) (2/2)(#03321-)
| YM***70 | Retainer, Spring | 3 |
| YM***00 | Plunger Ass'Y | 3 |
| YM***02 | Screw | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Fuel Injection Pump And Piping(#03321-)
| YM***20 | Retainer, Pipe | 1 |
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***30 | Bolt | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Fuel Nozzle And Spill Pipe(#03321-)
| YM***20 | Spring | 1 |
| YM***00 | Fuel Injection Nozzle, Assembly | 1 |
| YM***80 | Seat,Nozzle (Kit) | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Gasket Kit(#03321-)
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***20 | Gasket,Water Pump | 1 |
| YM***10 | Gasket (Kit) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Lubricating Oil Filter And Mounting(#03321-)
| YM***50 | Nut | 1 |
| YM***02 | Bolt Plated | 3 |
| YM***50 | Cartridge,Engine | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Lubricating Oil Pump And Piping(#03321-)
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***40 | Gasket,Inlet Pipe | 1 |
| YM***41 | Gasket (Kit) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Oil Pan(#03321-)
| YM***50 | O-Ring | 1 |
| YM***02 | Screw | 4 |
| YM***40 | O-Ring,Drain Plug | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : P.P.C. Pump And Mounting(#03321-)
| YM***20 | Pump Ass'Y,Hydraulic | 1 |
| YM***80 | Gasket (Kit) | 1 |
| YM***81 | Gasket (Kit) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Piston And Connecting Rod(#03321-)
| YM***20 | Piston Ass'Y | 3 |
| YM***00 | Screw | 2 |
| YM***00 | Crank Pin Metal A. (Std) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Rocker Arm(#03321-)
| YM***02 | Screw | 6 |
| YM***80 | Spring | 3 |
| YM***50 | Rocker Arm Ass'Y | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Safety Relay(#03321-)
| YM***00 | Relay, Safety | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Starting Motor (1.8kw)(#03321-)
| YM***40 | Bolt,Through | 2 |
| YM***50 | Pinion Ass'Y,Pinion | 1 |
| YM***00 | Cover,Rear | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Starting Motor And Mounting (1.8kw)(#03321-)
| YM***52 | Bolt Plated | 2 |
| YM***02 | Nut,Rock | 1 |
| YM***00 | Washer,Spring | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Water Pump And Cooling Fan(#03321-)
| YM***20 | Gasket,Water Pump | 1 |
| YM***30 | Cover | 1 |
| YM***02 | Screw | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84-2d Engine S/N 00292-Up : Water Separator And Piping(#03321-)
| YM***00 | Gasket | 2 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***50 | Plug,Air | 2 |
3d84e-3b Engine S/N 00292-Up
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Air Cleaner And Mounting(#00289-)
| YM***41 | Buffle | 1 |
| YM***70 | Seat,Rubber | 2 |
| YM***10 | Cap | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Air Intake Manifold And Connection(#00289-)
| YM***01 | Heater,Intake Air | 1 |
| YM***00 | Manifold,Air Intake | 1 |
| YM***52 | Screw | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Alternator (40a)(#00289-)
| YM***50 | Brush Ass'Y | 1 |
| YM***00 | Retainer,Bearing | 1 |
| YM***70 | Diode Ass'Y | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Alternator And Mounting (40a)(#00289-)
| YM***30 | Plate,Adjust | 1 |
| YM***02 | Nut | 1 |
| YM***02 | Nut | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Camshaft And Tappet(#00289-)
| YM***80 | Camshaft Ass'Y | 1 |
| YM***01 | Gear Ass'Y,Camshaft | 1 |
| YM***50 | Bearing, Thrust | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Crankshaft(#00289-)
| YM***00 | Gear,Crank | 1 |
| YM***80 | Parallel Pin | 1 |
| YM***10 | Spring Pin | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Cylinder Block(#00289-)
| YM***20 | Plug,Drain(Without Oil Cooler Type) | 1 |
| YM***60 | Cylinder Block, Assembly | 1 |
| YM***20 | Screw | 8 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Cylinder Head Cover(#00289-)
| YM***20 | Cover, Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***00 | Clip,Breather Hose | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Cylinder Head(#00289-)
| YM***31 | Gasket,Head (Kit) | 1 |
| YM***80 | Retainer, Spring | 6 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Exhaust Manifold And Muffler(#00289-)
| YM***10 | Gasket (Kit) | 1 |
| YM***02 | Screw | 4 |
| YM***22 | Stud | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Flywheel And Flywheel Housing(#00289-)
| YM***02 | Screw | 6 |
| YM***02 | Screw | 4 |
| YM***80 | Parallel Pin | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Front Cover And Gear(#00289-)
| YM***90 | Front Cover Ass'Y | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***52 | Bolt | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Fuel Filter And Piping(#00289-)
| YM***70 | Union | 1 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***51 | Check Valve Ass'Y,Joint | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Fuel Injection Pump (Governor) (1/2)(#00289-)
| YM***40 | Lever,Control | 1 |
| YM***30 | Spacer,Lever Shaft | 1 |
| YM***02 | Nut | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Fuel Injection Pump (Governor) (2/2)(#00289-)
| YM***01 | Weight Assembly., Governor | 1 |
| YM***50 | Angleich Ass'Y | 1 |
| YM***00 | Washer,Spring | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Fuel Injection Pump (Pump) (1/2)(#00289-)
| YM***50 | Kit, Shim | 1 |
| YM***10 | Plate? Caution | 1 |
| YM***50 | Cover,Side | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Fuel Injection Pump (Pump) (2/2)(#00289-)
| YM***70 | Retainer, Spring | 3 |
| YM***02 | Screw | 2 |
| YM***00 | Valve,Delivery | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Fuel Injection Pump And Piping(#00289-)
| YM***20 | Retainer, Pipe | 1 |
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***02 | Nut | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Fuel Nozzle And Spill Pipe(#00289-)
| YM***00 | Nozzle, Assembly | 1 |
| YM***20 | Spring | 1 |
| YM***00 | Fuel Injection Nozzle, Assembly | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Gasket Kit(#00289-)
| YM***60 | O-Ring,Fuel Injection Pump | 1 |
| YM***31 | Gasket,Head (Kit) | 1 |
| YM***40 | Seal,Valve? Exhaust (Kit) | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Lubricating Oil Filter And Mounting(#00289-)
| YM***50 | Nut | 1 |
| YM***00 | Valve,Relief | 1 |
| YM***02 | Bolt Plated | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Lubricating Oil Pump And Piping(#00289-)
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***41 | Gasket (Kit) | 1 |
| YM***20 | Bolt,Joint (Cylinder Head Side) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Oil Pan(#00289-)
| YM***70 | Oil Pan Ass'Y | 1 |
| YM***52 | Screw | 2 |
| YM***52 | Screw | 20 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : P.P.C. Pump And Mounting(#00289-)
| YM***20 | Pump Ass'Y,Hydraulic | 1 |
| YM***02 | Nut | 2 |
| YM***64 | Bearing,Ball | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Piston And Connecting Rod(#00289-)
| YM***00 | Screw | 2 |
| YM***00 | Crank Pin Metal A. (Std) | 1 |
| YM***00 | Piston Ass'Y | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Rocker Arm(#00289-)
| YM***02 | Screw | 6 |
| YM***80 | Spring | 3 |
| YM***50 | Rocker Arm Ass'Y | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Starting Motor (1.8kw)(#00289-)
| YM***40 | Bolt,Through | 2 |
| YM***50 | Pinion Ass'Y,Pinion | 1 |
| YM***00 | Cover,Rear | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Starting Motor And Mounting (1.8kw)(#00289-)
| YM***52 | Bolt Plated | 2 |
| YM***02 | Nut,Rock | 1 |
| YM***00 | Washer,Spring | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Timer? Safety Relay And Grow Relay(#00289-)
| YM***20 | Timer,Solenoid | 1 |
| YM***10 | Relay,Stop Solenoid | 1 |
| YM***00 | Relay, Safety | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Water Pump And Cooling Fan(#00289-)
| YM***20 | Gasket,Water Pump | 1 |
| YM***30 | Cover | 1 |
| YM***02 | Screw | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : 3d84e-3b Engine S/N 00292-Up : Water Separator And Piping(#00289-)
| YM***10 | Hose,(See Fig.0415-17?0416-17) | 1 |
| YM***00 | Gasket | 2 |
| YM***00 | O-Ring (Kit) | 1 |
Accessory
Komatsu : Pc25-1(S/N 1001-Up) : Accessory : Spare Parts
| 07***35 | O-Ring,Hydraulic Oil Filter | 1 |
| 07***34 | O-Ring,(With Fuel Strainer) | 1 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Accessory : Tool
| 07***50 | Pump, (Bellows Type) | 1 |
| 07***03 | Cartridge - Grease | 1 |
| 07***45 | Nozzle, Grease Pump (Non-Flexible Type) | 1 |
Cooling System
Komatsu : Pc25-1(S/N 1001-Up) : Cooling System : Radiator And Piping
| 01***14 | Bolt,(With Canopy) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Cooling System : Reserve Tank And Piping
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 2 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 2 |
Electrical System
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Additional Work Lamp (Boom R.H. Side)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 20***50 | Work Lamp Ass'Y | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Battery
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Battery (For Cold Weather)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Electrical System (Additional Piping Switch Line)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Electrical System (Engine? Horn And Sensor Line)
| 01***16 | Bolt (With Air Heater & Conditioner) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Electrical System (Instrument Panel Line)(#1001-6470)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Electrical System (Instrument Panel Line)(#6471-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Electrical System (Wiper Motor Line) (For Cab)
| 20***10 | Switch,Front Wiper? Lower | 1 |
| 20***40 | Spacer,Work Equipment Lamp | 1 |
| 20***30 | Wiring Harness | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Instrument Panel (For Cab)
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 4 |
| 20***30 | Starting Switch,Starting | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Electrical System : Instrument Panel (For Canopy)
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 4 |
| 20***30 | Starting Switch,Starting | 1 |
Engine Related Parts
Komatsu : Pc25-1(S/N 1001-Up) : Engine Related Parts : Engine Mounting Parts
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 14 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 8 |
Komatsu : Pc25-1(S/N 1001-Up) : Engine Related Parts : Engine Related Parts
| 01***40 | Bolt, Mount Master Brake Cylinder | 2 |
| 01***06 | Nut | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Engine Related Parts : Fuel Control Lever And Linkage
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 5 |
Komatsu : Pc25-1(S/N 1001-Up) : Engine Related Parts : Power Take Off
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***40 | Bolt,Reamer | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Fuel Tank And Related Parts
Komatsu : Pc25-1(S/N 1001-Up) : Fuel Tank And Related Parts : Fuel Piping
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 07***10 | Clip | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Fuel Tank And Related Parts : Fuel Tank
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***45 | Bolt, Mounting Bracket To Radiator (Top) | 1 |
| 01***10 | Screw,(For Wiper Switch Earth) | 5 |
Guard
Komatsu : Pc25-1(S/N 1001-Up) : Guard : Battery Cover And Tank Cover
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***10 | Screw,(For Wiper Switch Earth) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Guard : Counter Weight
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 12 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***55 | Bolt,(For Reinforced Type) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Guard : Engine Hood (1/3)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 7 |
Komatsu : Pc25-1(S/N 1001-Up) : Guard : Engine Hood (2/3)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Guard : Engine Hood (3/3)(#1001-6470)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Guard : Engine Hood (3/3)(#6471-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***12 | Washer,(With Body Positioner) | 1 |
Hydraulic System
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Control Valve (2-Spool) (1/2)
| 01***10 | Bolt | 2 |
| 01***16 | Bolt (Op) | 2 |
| 01***20 | Bolt (Itl) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Control Valve (2-Spool) (2/2)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Control Valve (3-Spool) (1/2) (For Power Tilt Mechanical Angle Blade)
| 01***10 | Bolt | 4 |
| 01***16 | Bolt (Op) | 4 |
| 01***20 | Bolt (Itl) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Control Valve (3-Spool) (2/2) (For Power Tilt Mechanical Angle Blade)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Control Valve (7-Spool) (1/3)
| 01***10 | Bolt | 4 |
| 01***16 | Bolt (Op) | 4 |
| 01***20 | Bolt (Itl) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Control Valve (7-Spool) (2/3)
| 01***10 | Bolt | 4 |
| 01***16 | Bolt (Op) | 4 |
| 01***20 | Bolt (Itl) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Control Valve (7-Spool) (3/3)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Additional Piping Line) (Chassis Side) (1/2)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Additional Piping Line) (Chassis Side) (2/2)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***60 | Bolt, Tube To Oil Cooler | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Arm And Bucket Cylinder Line)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***16 | Washer,Radio Controlled Slag Handling | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Blade Cylinder Line) (Upper)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
| 20***40 | Mark? A3 | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Blade Cylinder Line) (Upper) (For Power Tilt Mechanical Angle Blade)
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 4 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Boom Cylinder Line)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Boom Swing Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Drain Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Drain Line) (For Additional Piping)
| 07***23 | O-Ring,(Crusher?Other Att.For Ppc Con | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 1 |
| 07***04 | Hose, Tube To Torque Converter | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Oil Cooler And Return Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Suction And Delivery Line)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 11 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Suction And Delivery Line) (For Additional Piping)
| 01***25 | Bolt,Without Revolution Sensor | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 11 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Swing Motor Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Piping (Travel Motor Line) (Upper)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 9 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Pump (1/3)
| 01***70 | Bolt | 4 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 04***20 | Pin,Dowel (Welded) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Pump (2/3)
| 01***70 | Bolt | 4 |
| 01***23 | Washer,(For Shipping) | 8 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Pump (3/3)
| 01***23 | Washer,(For Shipping) | 4 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 70***60 | Seal,Ring | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Hydraulic Tank
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : I.S.O Pattern Select Valve
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 6 |
| 01***20 | Bolt? Wing,Wing (For Slag Handling) | 1 |
| 01***23 | Washer,(With Auto Emergency Steering) | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Multiple Pattern Select Valve(#1001-3842)
| 01***30 | Bolt,(For Mechanical Governor) | 10 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 10 |
| 04***10 | Pin,Cotter (Without Towing Winch), Cotter Pin; Was 04050-11610 | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : Multiple Pattern Select Valve(#3843-)
| 01***16 | Bolt (Op) | 18 |
| 01***16 | Bolt,(Without Cab) | 18 |
| 01***23 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Hydraulic System : P.P.C. Lock And Travel Speed Solenoid Valve
| 07***23 | O-Ring,(F4320-61a0 -29 ) | 1 |
| 07***07 | Plug,Housing No.2?3?4?5?6 | 1 |
| 20***21 | Solenoid Valve Ass'Y | 1 |
Main/Revolving Frame And Related Parts
Komatsu : Pc25-1(S/N 1001-Up) : Main/Revolving Frame And Related Parts : Boom Swing Bracket
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
| 04***12 | Lock,(With Rain Cap) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Main/Revolving Frame And Related Parts : Boom Swing Cylinder
| 01***24 | Nut,Bearing | 1 |
| 07***85 | O-Ring,(Without Fuel Level Gauge) | 1 |
| 07***80 | O-Ring (Kit) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Main/Revolving Frame And Related Parts : Revolving Frame
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 04***12 | Lock,(With Rain Cap) | 1 |
Marks And Plates
Komatsu : Pc25-1(S/N 1001-Up) : Marks And Plates : Marks And Plates (English) (For Cab)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
| 09***00 | Product Graphic, Warning -Pressurized Cooling System | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Marks And Plates : Marks And Plates (English) (For Canopy)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (English) | 1 |
| 09***00 | Product Graphic, Warning -Pressurized Cooling System | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Marks And Plates : Marks And Plates (For Multiple Pattern Control)
| 20***30 | Plate? Operating,(Mitsubishi Pattern) | 1 |
| 20***50 | Plate? Operating,(Kobelco Pattern) | 1 |
| 20***30 | Plate? Operating,(Iso Pattern) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Marks And Plates : Marks And Plates (Spanish) (For Cab)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (Spanish) | 4 |
| 09***00 | Product Graphic, Warning -Pressurized Cooling System | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Marks And Plates : Marks And Plates (Spanish) (For Canopy)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***35 | Plate? Name,(Limited Supply) (Spanish) | 1 |
| 09***00 | Product Graphic, Warning -Pressurized Cooling System | 1 |
Miscellaneous
Komatsu : Pc25-1(S/N 1001-Up) : Miscellaneous : Periodical Replacement And Safety Parts
| 07***21 | Hose,(See Fig.D0200-01a0-1) | 1 |
| 07***31 | Hose,(See Fig.D0200-01a0-2) | 1 |
| YM***10 | Hose,(See Fig.0415-17?0416-17) | 1 |
Operator'S Compartment And Control System
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Am Radio And Speaker (For Cab)
| 01***25 | Screw,(Except Japan) | 2 |
| 01***16 | Screw | 2 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Ashtray (For Cab)
| 01***16 | Screw | 2 |
| 20***80 | Ashtray | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Attachment Control Pedal And Linkage
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Blade Control Lever And Linkage
| 01***30 | Bolt,Stopper | 2 |
| 01***20 | Screw | 3 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Blade Control Lever And Linkage (1/2) (For Power Tilt Mechanical Angle Blade)
| 01***25 | Bolt,Without Revolution Sensor | 1 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 1 |
| 01***40 | Bolt | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Blade Control Lever And Linkage (2/2) (For Power Tilt Mechanical Angle Blade)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***15 | Nut | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Boom Swing Pedal And Linkage
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Boom Swing Pedal And Linkage (For Power Tilt Mechanical Angle Blade)
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Canopy
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***40 | Bolt,(With Center Guard) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Canopy (With Rain Guard)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***40 | Bolt,(With Center Guard) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Car Heater And Piping (For Cab)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 08***23 | Band,(With Water Separator) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Floor Frame (For Cab)
| 01***35 | Bolt, Hydraulic Tank Mounting | 1 |
| 01***10 | Bolt (Op) | 3 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Floor Frame (For Canopy)
| 01***35 | Bolt, Hydraulic Tank Mounting | 1 |
| 01***90 | Bolt | 3 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 5 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Floor Plate And Swing Lock Pin (For Cab)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 13 |
| 01***20 | Screw | 4 |
| 01***25 | Screw | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Floor Plate And Swing Lock Pin (For Canopy)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 13 |
| 01***20 | Screw | 4 |
| 01***25 | Screw | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Quick Coupling Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***65 | Bolt, Mount Radiator To Frame (Bottom) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Solenoid Valve Line)
| 01***35 | Bolt | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 8 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Solenoid Valve Line) (For Multiple Pattern Control)
| 01***35 | Bolt,(For Position Fixing) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 9 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? L.H.) (For I.S.O. Pattern)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***25 | Bolt | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? L.H.) (For Multiple Pattern Control)(#1001-3842)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? L.H.) (For Multiple Pattern Control)(#3843-5552)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? L.H.) (For Multiple Pattern Control)(#5553-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? L.H.) (Komatsu Pattern #1001-4550? 4575-4616)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? R.H.)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 7 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? R.H.) (For Multiple Pattern Control)(#1001-3842)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? R.H.) (For Multiple Pattern Control)(#3843-5552)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Hydraulic Piping (Work Equipment Control Line? R.H.) (For Multiple Pattern Control)(#5553-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Monitor System (For Cab)
| 78***00 | Panel | 1 |
| 78***01 | Panel | 1 |
| 78***10 | Switch,(For Light And Heater) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Monitor System (For Canopy)
| 78***00 | Panel | 1 |
| 78***01 | Panel | 1 |
| 78***10 | Switch,(For Light And Heater) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Operator'S Cab (1/6) (Cab)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***70 | Bolt, Mount Bracket And Oil Inlet Tube, Bolt | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Operator'S Cab (2/6) (Front Window)
| 01***16 | Screw | 4 |
| 01***20 | Screw,(Australia Spec.) | 2 |
| 01***12 | Screw,(Not Shown) (For Std Cab) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Operator'S Cab (3/6) (Upper And R.H. Side Window)
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 2 |
| 01***05 | Washer,(Without Window Washer) | 2 |
| 09***08 | Cap,(For Ripper Or Rear Hydraulic. Take) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Operator'S Cab (4/6) (Rear? L.H. Side Window And Inside Cover)
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 2 |
| 01***10 | Screw,(For Wiper Switch Earth) | 2 |
| 01***12 | Screw,(With Articulate Indicator) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Operator'S Cab (5/6) (Door 1/2)
| 20***70 | Door Ass'Y | 1 |
| 20***11 | Door | 1 |
| 20***20 | Glass | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Operator'S Cab (6/6) (Door 2/2)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***10 | Screw | 1 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Operator'S Seat
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Operator'S Seat Stand
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Screw | 4 |
| 01***10 | Nut,(Without Air Conditioner) | 8 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : P.P.C. Valve(#1001-5678)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***20 | Bolt,(Without Maintenance Monitor) | 4 |
| 07***20 | O-Ring,Relief Valve | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : P.P.C. Valve(#5679-)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 07***20 | O-Ring,Relief Valve | 4 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Panel Box (For Cab)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
| 01***23 | Washer,(Without Air Con.) | 12 |
| 20***80 | Screw | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Panel Box (For Cab) (For Additional Piping)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
| 01***23 | Washer,(Without Air Con.) | 12 |
| 20***80 | Screw | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Panel Box (For Canopy)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
| 01***23 | Washer,(Without Air Con.) | 12 |
| 20***80 | Screw | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Panel Box (For Canopy) (For Additional Piping)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
| 01***23 | Washer,(Without Air Con.) | 12 |
| 20***80 | Screw | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Seat Belt
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 09***01 | Bolt,(For Shipping) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Travel Control Lever And Linkage
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Travel Control Lever And Linkage (For Power Tilt Mechanical Angle Blade)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Travel Speed Pedal
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***08 | Washer,(For Fixed Type Ripper) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Window Washer (For Cab)
| 08***01 | Clip,(With Cab) | 3 |
| 20***20 | Nozzle Ass'Y | 1 |
| 20***70 | Hose | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Work Equipment Control Lever
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 08***21 | Band,(For One Touch Decel) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Operator'S Compartment And Control System : Work Equipment Lock Lever
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 2 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 2 |
Service Kit And Component Parts
Komatsu : Pc25-1(S/N 1001-Up) : Service Kit And Component Parts : Kit
| 07***65 | O-Ring,Injection Pump Case | 1 |
| 07***75 | O-Ring,Steering Oil Filter | 1 |
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
Swing Circle And Related Parts
Komatsu : Pc25-1(S/N 1001-Up) : Swing Circle And Related Parts : Swing Circle
| 01***60 | Bolt, Tube To Oil Cooler | 16 |
| 01***70 | Bolt, Accumulator Mounting Bracket | 20 |
| 04***34 | Pin-Dowel, Pin,Dowel (For Shipping) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Swing Circle And Related Parts : Swing Machinery
| 01***50 | Bolt,(With Service Valve R.H.) | 6 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Swing Circle And Related Parts : Swing Motor (1/2)
| 04***18 | Ring,Snap (Itl) | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 07***12 | Plug,(With Lock Valve) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Swing Circle And Related Parts : Swing Motor (2/2)
| 07***16 | O-Ring | 1 |
| 07***16 | Ring, Back-Up | 1 |
| 07***34 | O-Ring, O-Ring,Drain Plug? R.H. Half Tank | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Swing Circle And Related Parts : Swivel Joint
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 04***25 | Ring, Retaining | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Swing Circle And Related Parts : Swivel Joint (For Power Tilt Mechanical Angle Blade)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 04***25 | Ring, Retaining | 1 |
Travel And Lower Piping
Komatsu : Pc25-1(S/N 1001-Up) : Travel And Lower Piping : Hydraulic Piping (Blade Cylinder Line) (Lower)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 08***20 | Grommet | 1 |
| 20***80 | Hose | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Travel And Lower Piping : Hydraulic Piping (Blade Cylinder Line) (Lower) (For Power Tilt Mechanical Angle Blade)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***65 | Bolt,(Except Japan) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Travel And Lower Piping : Hydraulic Piping (Travel Motor Line) (Lower)
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Travel And Lower Piping : Sprocket
| 01***30 | Bolt,(Not Used With Emergency Str.) | 18 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 18 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 36 |
Komatsu : Pc25-1(S/N 1001-Up) : Travel And Lower Piping : Travel Motor (1/3)
| 04***15 | Ring, Snap | 1 |
| 06***06 | Bearing,Ball | 1 |
| 06***02 | Bearing,Ball | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Travel And Lower Piping : Travel Motor (2/3)
| 10***60 | O-Ring Ass'Y | 1 |
| 10***30 | O-Ring | 2 |
| 17***21 | Floating Seal Ass'Y,Seal | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Travel And Lower Piping : Travel Motor (3/3)
| FU***01 | Spring | 1 |
| FU***90 | O-Ring | 10 |
| FU***04 | Valve,Check | 2 |
Under Carriage
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Carrier Roller (For Steel Shoe)(#1001-6470)
| 01***85 | Bolt,(For Perforated Mask) | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 04***15 | Ring, Snap | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Carrier Roller(#6471-)
| 01***85 | Bolt,(For Perforated Mask) | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 04***15 | Ring, Snap | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Front Idler (For Steel Shoe)(#1001-6470)
| 01***45 | Capscrew - M10 X 1.25 | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***28 | O-Ring, Strainer To Control Pump Line | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Recoil Spring (For Steel Shoe)(#1001-6470)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***60 | Bolt, Tube To Oil Cooler | 8 |
| 01***26 | Nut | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Recoil Spring(#6471-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***60 | Bolt, Tube To Oil Cooler | 8 |
| 01***33 | Castle Nut | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Track Frame (For 400mm Width Steel Shoe)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Track Frame (For Steel Shoe)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 12 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Track Roller (For Steel Shoe)(#1001-6470)
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 16 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 16 |
| 07***21 | O-Ring,Water Piping | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Track Roller(#6471-)
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 16 |
| 01***08 | Screw | 1 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 16 |
Komatsu : Pc25-1(S/N 1001-Up) : Under Carriage : Track Shoe (Double Grouser With Hole) (For Steel Shoe)
| 20***27 | Shoe Ass'Y,Regular | 84 |
| 20***37 | Shoe Ass'Y,Master | 2 |
| 20***54 | Shoe Ass'Y,Regular | 84 |
Work Equipment
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Arm
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 04***12 | Lock,(With Rain Cap) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Arm (For Additional Piping)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 04***12 | Lock,(With Rain Cap) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Arm Cylinder
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***24 | Nut,Bearing | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Blade
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 7 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Blade (For 400mm Wide Steel Shoe)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 7 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Blade Cylinder
| 01***26 | Nut,Nylon | 1 |
| 07***90 | O-Ring,(Dk029369-0020) (K2) | 1 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Blade Lift Cylinder (For Power Tilt Mechanical Angle Blade)
| 01***26 | Nut,Nylon | 1 |
| 07***95 | O-Ring,Transmission Strainer | 1 |
| 07***90 | O-Ring,(Y1620-41a0a-11) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Blade Tilt Cylinder (For Power Tilt Mechanical Angle Blade)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 04***25 | Ring,Snap (Kit) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Boom
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Boom Cylinder
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***24 | Nut,Bearing | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket Cylinder
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***24 | Nut,Bearing | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket Link
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 6 |
| 01***35 | Bolt, Hydraulic Tank Mounting | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket Link (For 325mm Or 350mm Wide Bucket)
| 01***35 | Bolt, Hydraulic Tank Mounting | 2 |
| 01***85 | Bolt | 2 |
| 01***10 | Nut,(Without Air Conditioner) | 4 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.03m3 (Mini 0.05m3) 325mm
| 01***43 | Bolt | 6 |
| 01***15 | Nut | 6 |
| 02***60 | Bolt (Op) | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.03m3 (Mini 0.05m3) 325mm (Vertical Pin Type)(#6471-)
| 20***50 | Bolt | 6 |
| 20***51 | Bolt | 6 |
| 20***60 | Nut | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.04m3 (Mini 0.07m3) 350mm
| 01***43 | Bolt | 6 |
| 01***15 | Nut | 6 |
| 02***60 | Bolt (Op) | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.04m3 (Mini 0.07m3) 350mm (Vertical Pin Type)(#6471-)
| 20***50 | Bolt | 6 |
| 20***51 | Bolt | 6 |
| 20***60 | Nut | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.05m3 (Mini 0.08m3) 425mm
| 01***43 | Bolt | 6 |
| 01***15 | Nut | 6 |
| 02***60 | Bolt (Op) | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.05m3 (Mini 0.08m3) 425mm (Vertical Pin Type)(#6471-)
| 20***50 | Bolt | 6 |
| 20***51 | Bolt | 6 |
| 20***60 | Nut | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.08m3 (Mini 0.14m3) 500mm
| 01***43 | Bolt | 6 |
| 01***15 | Nut | 6 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 8 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.08m3 (Mini 0.14m3) 500mm (Vertical Pin Type)(#6471-)
| 20***50 | Bolt | 6 |
| 20***51 | Bolt | 6 |
| 20***60 | Nut | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.10m3 (Mini 0.18m3) 600mm
| 01***43 | Bolt | 6 |
| 01***15 | Nut | 6 |
| 02***60 | Bolt (Op) | 8 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Bucket? 0.10m3 (Mini 0.18m3) 600mm (Vertical Pin Type)(#6471-)
| 20***50 | Bolt | 6 |
| 20***51 | Bolt | 6 |
| 20***60 | Nut | 6 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Hydraulic Piping (Additional Piping Line) (Attachment Side)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 14 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Hydraulic Piping (Arm And Bucket Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 9 |
| 01***32 | Washer,(With Auto Emergency Steering) | 9 |
| 04***08 | Clip | 1 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Long Arm
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 04***12 | Lock,(With Rain Cap) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Power Tilt Mechanical Angle Blade (1/2)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 3 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 11 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Power Tilt Mechanical Angle Blade (2/2)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 10 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Reinforced Bucket? 0.08m3 (Mini 0.14m3) 500mm
| 01***43 | Bolt | 6 |
| 01***15 | Nut | 6 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 8 |
Komatsu : Pc25-1(S/N 1001-Up) : Work Equipment : Reinforced Bucket? 0.08m3 (Mini 0.14m3) 500mm (Vertical Pin Type)(#6471-)
| 20***50 | Bolt | 6 |
| 20***51 | Bolt | 6 |
| 20***60 | Nut | 6 |
PC25-1(S/N 1001-UP) serial number reference
The ID plate is on the front of the machine, on a flat stamped surface between the hydraulic arm mounts near the boom foot/swing frame. It shows model code and a plain numeric serial only; there is no alpha prefix on this vintage plate, so read the number as-is and match it against the parts/service manual serial break (1001-UP) rather than a prefix table.
| Prefix | Identifies | Notes |
|---|---|---|
| 1001-UP | Base/only documented configuration (Japan-market parts manual range) | Serial numbers run as a plain numeric sequence starting at 1001; no alpha PIN prefix on this vintage of Komatsu compact excavator. Engine is a Komatsu 3D84-series diesel, a Yanmar-derived 3-cylinder naturally aspirated design; exact factory suffix varies by source (3D84-2, 3D84-2D, and 3D84-3 are all cited for this model) - confirm exact suffix and build year against the machine's own nameplate or with a dealer. |
Frequently asked questions
What engine does the Komatsu PC25-1 (S/N 1001-UP) use?
It runs a Komatsu 3D84-series diesel (suffix cataloged variously as 3D84-2, 3D84-2D, or 3D84-3 depending on source), a naturally aspirated, water-cooled 3-cylinder engine of about 1.4 L displacement. Some documentation cross-references the same engine under the Yanmar 3TN84L-RBA designation. Rated output is reported as a spread depending on rating method: roughly 20.9 kW (28 hp) at 2,700 rpm on one standard, or about 17.9 kW (24 hp) at 2,300 rpm on another.
What is the operating weight of the Komatsu PC25-1 (S/N 1001-UP)?
Operating weight is approximately 2,950 kg (6,505 lb) in standard canopy configuration on steel tracks. Actual weight varies slightly with bucket, blade, and counterweight setup.
What replaced the Komatsu PC25-1?
Komatsu retired this conventional-tailswing chassis and later reused the "25" model number on a newer, unrelated radius-tailswing mini excavator with a different engine and undercarriage. That later machine is a separate design, not a direct running change of the PC25-1 covered here.
What PC25-1(S/N 1001-UP) owners discuss
What engine does the PC25-1(S/N 1001-UP) run, and are there any quirks to know about?
It carries a small naturally aspirated 3-cylinder diesel from Komatsu's 3D84 family, cataloged variously as 3D84-2, 3D84-2D, or 3D84-3 depending on source and production year, most commonly listed around 20-21 kW (27-28 hp). Some parts catalogs show a lower-output 3TN84L-family variant closer to 18 kW (24 hp) at a lower governed speed, so treat exact output as varying by configuration/series and check the tag on your unit rather than assuming one figure. This block shares core architecture and wear parts (rings, bearings, injectors) with Yanmar's 3TNE84 industrial diesel line, which is why overhaul kits cross-list both Komatsu and Yanmar part numbers for the same engine - that's normal for this platform, not a sign of a non-factory swap. It's mechanically injected with no electronic engine controls, so diagnostics stay simple, but injection pump timing and glow plug condition do all the work for cold starting.
Hydraulics feel sluggish after a fluid and filter service - what's the usual cause?
Owners who service the return filter and refill the hydraulic tank sometimes find the whole machine noticeably slower afterward. The most commonly reported cause is running oil that's too heavy for the circuit - this machine responds best to an AW32 or AW46 anti-wear hydraulic oil, with older Komatsu-era charts for machines this age also listing SAE10 or SAE10W-30 for cold climates. Also worth knowing: this platform uses only one hydraulic filter, a tank-mounted return/suction filter - there is no separate pilot-line filter on this excavator, so don't chase one if pilot response feels weak. Check pilot pressure and the pilot relief valve setting instead.
Is losing blade (dozer blade) down pressure a known issue on this excavator?
Yes, it comes up repeatedly. Loss of blade down force - the blade won't push down with authority - traces most often to the blade control valve spool sticking from varnish buildup or contamination, or an internal leak past the spool. Cleaning or replacing that valve section and confirming clean hydraulic oil resolves most cases. Because the blade also acts as a stabilizer during digging, have your dealer verify valve and relief pressure settings before putting the machine back to work.
What undercarriage wear patterns are typical for this class of Komatsu mini excavator?
Expect rubber track wear (this platform offered a factory rubber-track option alongside steel-shoe track) along with weeping bottom and top track rollers after a few thousand hours of use. Roller seals harden with age and start seeping oil; if that's ignored, the roller runs dry and galls the bearing race underneath. A tired recoil/tensioner spring showing up as track sag or a slapping track at travel speed is also common on machines this old - check tension and grease the adjuster before condemning a roller or idler.
Are there recurring final drive or travel motor problems on the PC25-1(S/N 1001-UP)?
Travel motor shaft seal failure is the main one reported. Once the seal lets go, hydraulic pressure pushes fluid past it and pressurizes the final drive case, which then weeps gear oil at the drive housing. A plugged case-drain filter or fluid that's too viscous for the season can accelerate the failure. Since the travel motor on this class of machine also houses the parking/holding brake function, have your dealer verify brake holding performance any time a travel motor is opened up for seal work.
What electrical or cold-start issues come up most on this older-generation machine?
This is a pre-electronic platform - the electrical system covers only starting, charging, and glow plug circuits, with no engine ECU to throw fault codes. Hard cold starts trace almost every time to weak glow plugs or a battery that has dropped below roughly 12.4V; test glow plug resistance and confirm charging voltage before suspecting the injection pump. A 20-30 second preheat cycle ahead of cranking is standard practice on these in cold weather.
What should a buyer check before purchasing a used PC25-1(S/N 1001-UP)?
Walk the boom, arm, and mainframe first, looking for welds or cracks at the pivot points - these small machines get worked hard in tight spaces and take real stress at the pins. Check every cylinder rod for scoring and every hose and fitting for weeping. On the undercarriage, check rubber track condition (cracking, exposed cable) and look at roller and idler seals for seepage. Confirm the engine serial and injection pump tag line up with a straight, unmodified 3D84-family install. These units are commonly grey-market/import machines, and that history can put a given serial outside the standard regional parts catalog, so expect longer lead times sourcing certain parts. Pull maintenance records if any exist, and have your dealer verify hydraulic pump output pressure and relief valve settings during a pre-purchase inspection.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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