Komatsuhydraulic excavatormedium (pc100 - pc270)
Komatsu PC100-1(S/N 10001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC100-1 (S/N 10001-UP) is a roughly 10-metric-ton class crawler hydraulic excavator built from 1981 to 1984, part of Komatsu's first fully in-house PC-1 hydraulic excavator generation launched after the company ended its long-running Bucyrus-Erie technology license. Power comes from Komatsu's own S4D105-5, a naturally aspirated 4-cylinder diesel displacing 4.33 L and rated around 60 kW (81 hp) gross, mated to a mechanically governed hydraulic system with analog gauges and warning lamps rather than any electronic monitor. Operating weight runs about 10.5 t (23,148 lb) depending on bucket and undercarriage configuration, with a 230 L fuel tank, a 145 L hydraulic reservoir, and a standard 0.5 m³ bucket carried on a 60 mm pin. Komatsu offered it with various bucket and arm combinations for general excavation, trenching, and loading work. The PC100-1 was superseded first by the PC100-2, then the PC100-3, PC100-5/-5C, and PC100-6, each generation moving further from this machine's simple mechanical roots.
Later PC100 generations moved the platform toward open-center load-sensing hydraulics and, eventually, electronic engine and hydraulic monitoring, along with revised engines and incremental weight and bucket-capacity gains. The PC100-1 predates all of that: a purely mechanical machine with no ECM, no diagnostic codes, and no electronically metered pumps, which is exactly why it still has a following today. Owners and rebuilders value it for straightforward diagnosis and repair with basic tooling, and its S4D105-series engine and drivetrain share design lineage with siblings like the PC120-1 and PC150-1, which helps parts availability decades after production ended. In the used and parts market, most surviving PC100-1 units are valued less as turnkey working machines and more as sources of engine, hydraulic, and undercarriage components, or as low-cost, easily wrenched-on units for owners who prefer mechanical simplicity over modern electronics.
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 PC100-1(S/N 10001-UP) specifications
Engine
| Engine model | Komatsu S4D105-5, 4-cycle water-cooled diesel |
| Cylinders | 4, in-line |
| Gross power | 60 kW (81 hp) |
| Displacement | 4.33 L (264 cu in) |
| Emissions tier | Pre-emissions-regulation era (early 1980s design, no EPA/EU tier) |
Weights
| Operating weight | 10.5 t (23,148 lb), standard configuration |
| Ground pressure | approx. 41 kPa (6 psi) with standard 480 mm shoes |
Dimensions
| Transport length | 7.18 m (23 ft 6 in) |
| Transport width | 2.3-2.4 m (7 ft 7 in to 7 ft 10 in), varies by shoe width fitted |
| Transport height (to cab top) | 2.68 m (8 ft 10 in) |
| Tail swing radius | 2.23 m (7 ft 4 in) |
| Track shoe width | 480 mm (18.9 in), standard |
| Ground clearance | approx. 0.40 m (1 ft 4 in) |
Performance
| Max digging depth | 4.6 m (15 ft 1 in), standard boom/arm; up to approx. 5.46 m (17 ft 11 in) with long-reach arm option |
| Max reach at ground level | 7.17 m (23 ft 6 in), standard configuration; up to approx. 7.92 m (26 ft) with long-reach option |
| Max loading/dump height | 4.98 m (16 ft 4 in), standard; up to approx. 5.21 m (17 ft 1 in) with long-reach option |
| Max cutting height | 7.17 m (23 ft 6 in), standard configuration |
| Swing speed | 10 rpm |
| Max travel speed | 3.4-3.5 km/h (2.1-2.2 mph) |
Forces
| Bucket digging force | Not documented for this exact serial range in available factory spec sheets - verify with your dealer |
| Arm/stick digging force | Not documented for this exact serial range in available factory spec sheets - verify with your dealer |
Service capacities (summary)
| Fuel tank | 230 L (60.8 gal) |
| Hydraulic system | 145 L (38.3-38.4 gal) |
| Hydraulic relief pressure | 17.2 MPa (2500 psi) |
| Hydraulic pump flow | 248 L/min (65.5-65.6 gal/min) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC100-1(S/N 10001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not documented in available factory literature for this exact S/N 10001-UP range. This machine runs the Komatsu S4D105-5 four-cylinder diesel; consult the dealer or OMM for the exact refill figure. | Komatsu genuine diesel engine oil, API CD/CC class. SAE 15W-40 for temperate climates, SAE 10W for cold climates below freezing, SAE 30 for consistently hot climates. |
| Cooling system | Not documented for this exact serial range in available sources; verify with dealer or OMM. | Permanent-type (ethylene glycol) antifreeze coolant, mixed to the freeze-protection ratio for the operating region. Plain water without corrosion inhibitor is not recommended. |
| Fuel tank | 230 L (60.8 US gal) | ASTM D975 No. 2-D diesel fuel; No. 1-D or a winter-blend diesel in cold climates below freezing. |
| Hydraulic system total | 145 L (38.4 US gal), full system including tank, lines, and cylinders | Komatsu genuine anti-wear hydraulic oil, ISO VG46-equivalent viscosity for normal climates; a lighter multigrade hydraulic oil for cold-climate service. |
| Hydraulic tank | Not separately documented; factory spec sheets give only the full-system figure of 145 L (38.4 US gal). Tank-only refill volume is smaller than the system total — verify with dealer or OMM. | Same as hydraulic system: Komatsu genuine anti-wear hydraulic oil, ISO VG46-equivalent. |
| Final drive (each side) | Not documented for this exact serial range; verify with dealer or OMM. | Komatsu-specified engine oil (not gear oil) for the final drive case on this excavator generation: SAE 30 or 10W-30/15W-40 matched to ambient temperature, same grade as the crankcase fill. |
| Swing drive | Not documented for this exact serial range; verify with dealer or OMM. | Same practice as the final drive: Komatsu-specified engine oil grade (SAE 30 or 10W-30/15W-40) rather than gear lube, per factory service practice for this excavator generation. |
| Grease (spec only) | N/A — applied via grease gun at scheduled service intervals, not a fill-and-check reservoir. | Komatsu genuine multipurpose lithium-based EP grease, NLGI 2, for bucket, arm, boom, and swing-bearing pin points. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC100-1(S/N 10001-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 PC100-1(S/N 10001-UP) beyond the schedule
Predictive maintenance & fluid analysis
The S4D105-5 runs a mechanical injection pump with no ECM to flag wear, so oil analysis is the earliest warning system on this machine. Pull engine oil samples at every 250-hour service to catch coolant intrusion, fuel dilution, or bearing wear before the analog gauge cluster shows symptoms. Sample the 145 L hydraulic reservoir and the swing and final drive gear oil at the 500 to 1000 hour marks; rising metal content flags pump, motor, or swing bearing wear early, when repair is still cheaper than replacement.
Corrective & common repairs
Age is the main enemy on a PC100-1 this old. Expect fuel injection pump and injector recalibration from decades of variable fuel quality, hydraulic cylinder rod pitting and seal leaks on the boom, arm, and bucket cylinders, and internal leakage in the swing and travel motors that shows up as sluggish, spongy movement. Analog gauge senders and wiring corrode with age and cause false temperature or pressure readings. Track sag and roller wear are common on undercarriages that have outlived their original bushings and pins.
Overhaul & rebuild points
At high hours, plan an inframe overhaul on the S4D105-5: cylinder liners, piston rings, and main and rod bearings wear after decades of service. The main hydraulic pump, control valve, and swing and travel motors come next once output or holding pressure drops off spec. Swing bearing and ring gear wear shows up as play at the house-to-frame joint. Rebuild the undercarriage as a set (links, rollers, idlers, sprockets, shoes) and renew the 60 mm boom, arm, and bucket pins and bushings to remove linkage slop.
Seasonal & environment servicing
Cold starts are the main risk on this mechanically injected diesel with no glow-plug controller or ECM to help; check the battery and electrolyte before winter and match oil viscosity and coolant ratio to the season. In hot, dusty sites, clean the radiator and oil cooler fins and check the air cleaner element more often than standard to protect the S4D105-5 from overheating and dust. Before extended storage, run the fuel tank low on stabilized fuel and grease every pin to keep moisture out of the 60 mm pin-bushing joints.
PC100-1(S/N 10001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6712-81-8620 | Plate? Caution,Additional Fuel Filter | Fuel system service | Check fitment → |
| 6712-81-8720 | Plate? Caution,Additional Fuel Filter | Fuel system service | Check fitment → |
| 09019-08035 | Wrench,Filter (For Add. Fuel Filter) | Fuel system service | Check fitment → |
| 07000-05155 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 08036-01414 | Clip,(For Add.Filter)(Except Japan) | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC100-1(S/N 10001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Engine Oil Pressure Warning Lamp | Red lamp on the instrument panel lights when engine oil pressure drops below the safe minimum with the engine running. | Low oil level, clogged oil filter or strainer, worn oil pump, or a failed pressure sender or wiring. | Stop the engine immediately, check oil level and filter condition, then check the sender and wiring before restarting. |
| Coolant Temperature Gauge (red zone) / Overheat Warning | Gauge needle enters the red zone, often paired with a lamp or buzzer, when engine coolant overheats. | Low coolant level, clogged radiator core, loose or broken fan belt, or a stuck thermostat. | Idle down and shut off if the buzzer sounds; once cool, check coolant level, belt tension, and radiator fins. |
| Charge (Alternator) Warning Lamp | Lamp stays lit with the engine running, showing the alternator is not charging the battery. | Slipping or broken fan/alternator belt, failed alternator, or a loose or corroded battery terminal. | Check belt tension and battery connections first; bench-test or replace the alternator if the lamp stays on at speed. |
| Fuel Level Gauge (low fuel) | Needle drops toward empty, warning that the fuel tank is nearly dry. | Normal consumption approaching an empty tank, or a leak in the fuel system. | Refuel with clean diesel and bleed air from the fuel system if the tank was run dry. |
| Air Cleaner Restriction Indicator | Mechanical, vacuum-actuated flag shows the intake air filter element is clogged. | Dust and dirt loading of the paper element, common in dusty digging or demolition work. | Service or replace the air filter element and reset the indicator flag. |
| Preheat (Glow) Indicator Lamp | Lamp glows during the cold-start preheat cycle to show the intake air heater circuit is energized. | Normal function when lit; failure to light on a cold start points to a blown fuse, bad relay, or open heater element. | If the lamp fails to light on a cold start, check the preheat fuse, relay, and heater element before repeated cranking. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
PC100-1(S/N 10001-UP) attachments & work tools
Buckets
Factory general-purpose bucket for the PC100-1 (S/N 10001-UP) runs about 0.5 m³ (0.65 cu yd) heaped. Bucket-to-arm linkage pin is 60 mm (2.36 in) diameter, shared across the PC100/PC120 pin-on bucket family, with pin lengths varying by pin position in the linkage. HD/rock buckets in this class typically run 10-20% below GP capacity to allow for thicker plate and reinforced cutting edges; exact figures vary by manufacturer and are not separately documented for this serial range.
Hydraulic hammers
This machine sits in the light-to-mid carrier bracket (roughly 9-14 t) used by most breaker makers, matching a hammer in the approximate 700-1,000 kg (1,500-2,200 lb) service-weight class — treat as a range, since brand class charts do not agree exactly. Circuits for a hammer this size typically need roughly 80-110 L/min at 100-160 bar; always confirm against the specific breaker's data plate before hookup, not the excavator's total pump rating.
Quick couplers
Pin-grab quick couplers, manual or hydraulic, sized for roughly 8-12 t carriers are the standard fit and use the same 60 mm pin bore as the factory bucket linkage. A hydraulic coupler on this class needs its own return-to-tank or pressure-fed coupler circuit, which is not standard equipment on a machine of this vintage and would need to be added.
Thumbs/grapples
Operating weight of about 10.5 t (23,100 lb) sits right at the boundary between the smaller and mid-size dealer thumb-kit weight brackets, so suppliers generally size a thumb for this machine off bucket width rather than weight class alone. Hydraulic thumbs need a double-acting (two-way) auxiliary circuit with its own relief valve; mechanical bolt-on thumbs need no hydraulics at all.
Rippers
Single-shank ripper attachments built for the roughly 7-11 t (15,000-25,000 lb) bracket fit this machine. They mount pin-on in place of the bucket and use the arm/bucket cylinder for penetration force rather than a dedicated ripper cylinder; multi-shank rippers are not typical for this size class.
Hydraulic kit / circuit notes
As an early-1980s design, this machine is not set up from the factory with a dedicated attachment circuit. Fitting a breaker needs a single-acting (one-way) auxiliary line tapped into the main pump circuit; a thumb or grapple needs a double-acting (two-way) circuit with its own relief valve. Catalog main-system relief pressure is about 17.2 MPa (2,500 psi) with combined pump flow near 248 L/min (65.6 US gpm) across two main pumps — size any auxiliary kit to the attachment maker's flow/pressure spec, not the machine's total pump output.
All PC100-1(S/N 10001-UP) assemblies by section
Every catalogued assembly group for the Komatsu PC100-1(S/N 10001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine Related Parts And Electrical System
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Air Cleaner Connection (Pc100ss)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 6 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 6 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Battery And Relay Switch(#10001-10416)
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Battery And Relay Switch(#10417-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***18 | Bolt | 1 |
| 01***60 | Nut,Wing | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Electrical System (Pc100)(#10001-10416)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***30 | Bolt,(For Center Guard) | 1 |
| 01***08 | Screw | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Electrical System (Pc100)(#10417-)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For Center Guard) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Electrical System (Pc100ss)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For Center Guard) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Engine Mount
| 01***35 | Bolt, Mounting - Flywheel Housing End | 8 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 8 |
| 01***25 | Bolt | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Fuel Contorl Lever And Linkage (Pc100ss)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***35 | Screw | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever And Linkage (Pc100)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***35 | Screw | 1 |
| 01***65 | Bolt | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping (Pc100)
| 01***20 | Bolt,(Used When Towing Winch) | 1 |
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping (Pc100ss)
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt-Hex, Bolt,(With Center Guard) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Instrument Panel(#10001-10416)
| 01***12 | Bolt,(Without R.P.C.U.) | 1 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***12 | Screw | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Instrument Panel(#10417-)
| 01***12 | Bolt,(Without R.P.C.U.) | 1 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***12 | Screw | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Muffler And Connection (Pc100ss)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Power Take Off
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
| 01***55 | Bolt | 6 |
Komatsu : Pc100-1(S/N 10001-Up) : Engine Related Parts And Electrical System : Radiator And Oil Cooler
| 01***16 | Bolt,(For Slag Handling) | 8 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 18 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
Hydraulic System
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Arm Cylinder
| 01***35 | Bolt,(For Position Fixing) | 2 |
| 01***50 | Bolt (Kit) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Boom Cylinder
| 01***35 | Bolt,(For Position Fixing) | 2 |
| 01***50 | Bolt (Kit) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Boom? Arm And Bucket Cylinder Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***65 | Bolt (M12-1.75x65) | 6 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Bucket Cylinder
| 01***35 | Bolt,(For Position Fixing) | 2 |
| 01***50 | Bolt (Kit) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Control Valve? For L.H. Travel? Boom-High? Arm? Swing
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Bolt (Itl) | 16 |
| 01***30 | Bolt (Itl) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Control Valve? For R.H. Travel? Bucket? Boom
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Bolt (Itl) | 12 |
| 01***30 | Bolt (Itl) | 3 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Drain Piping (Pc100ss)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 9 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***11 | Nut,(With Under Mirror) | 12 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Hydraulic Pump (1/3)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 4 |
| 01***42 | Washer,Spring (For Pedal Steering), Washer-Spring | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Hydraulic Pump (2/3)
| 70***30 | Pump Ass'Y | 1 |
| (7***0) | Pump Ass'Y | 1 |
| (7***0) | Pump Ass'Y | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Hydraulic Pump (3/3)
| 70***30 | Pump Ass'Y | 1 |
| (7***0) | Pump Ass'Y | 1 |
| (7***0) | Pump Ass'Y | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Hydraulic Tank
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Main Relief Valve
| 01***05 | Nut (Welded) | 1 |
| 07***12 | O-Ring (Itl) | 1 |
| 07***12 | Ring,Back-Up; Was 07001-02012, Ring,Back-Up (Itl) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Muffler To Valve Piping (Pc100ss)
| 01***35 | Bolt, Mounting - Flywheel Housing End | 8 |
| 01***50 | Bolt | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Pilot Valve
| 01***50 | Bolt,(For Trimming Dozer) | 2 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Relief Valve (Pc100ss)
| 01***05 | Nut (Welded) | 1 |
| 07***12 | O-Ring (Itl) | 1 |
| 07***12 | Ring,Back-Up; Was 07001-02012, Ring,Back-Up (Itl) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Safety And Suction Valve (For 3-Spool Valve)
| 07***34 | O-Ring, O-Ring, Oil Level And Fill Plug | 4 |
| 70***60 | O-Ring (Itl) | 4 |
| 70***20 | Spacer | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Safety And Suction Valve (For 4-Spool Valve)(#10001-11479)
| 07***34 | O-Ring, O-Ring, Oil Level And Fill Plug | 3 |
| 70***60 | O-Ring (Itl) | 3 |
| 70***02 | Valve Ass'Y,Suction And Safety? Bucket | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Safety And Suction Valve (For 4-Spool Valve)(#11480-)
| 07***34 | O-Ring, O-Ring, Oil Level And Fill Plug | 3 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 1 |
| 70***60 | O-Ring (Itl) | 3 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Tank To Pump To Muffler Piping (Pc100ss)
| 01***65 | Bolt (M12-1.75x65) | 4 |
| 01***90 | Bolt,For Reversible Fan | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Tank To Pump To Valve Piping (Pc100)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 16 |
| 01***50 | Bolt | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Valve To Oil Cooler To Tank Piping (Pc100)
| 01***65 | Bolt,(For Suction Fan)(4d130-1d) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 04***40 | Ball,(For Long Lever Control) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Valve To Oil Cooler To Tank Piping (Pc100ss)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***65 | Bolt,(Except Japan) | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Valve To/From Arm Cylinder Piping (Chassis Side)
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 04***12 | Ring,Split, Ring-Snap | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Valve To/From Boom Cylinder Piping (Chassis Side)
| 01***25 | Bolt - Rear Guard Mounting | 2 |
| 01***11 | Nut,(With Under Mirror) | 10 |
| 01***32 | Washer,(With Auto Emergency Steering) | 10 |
Komatsu : Pc100-1(S/N 10001-Up) : Hydraulic System : Valve To/From Bucket Cylinder Piping (Chassis Side)
| 01***25 | Bolt - Rear Guard Mounting | 3 |
| 01***70 | Bolt, Heater Hose Clip | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Optional Parts
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Car Cooler Piping
| 01***25 | Bolt,(Without Auto Priming System) | 12 |
| 01***45 | Bolt,(S6d155-4b) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 11 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Clamshell Bucket? 0.35m3
| 01***20 | Bolt,(Large Capacity Type) (Std) | 10 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***35 | Bolt,(For Pedal Steering) | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Clamshell Piping
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 4 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Compressor And Control Panel
| 20***60 | Case Ass'Y | 1 |
| 20***70 | Switch | 1 |
| 20***80 | Resistor | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Condenser Unit
| 20***70 | Condenser | 1 |
| 20***80 | Motor,Fan | 1 |
| 20***90 | Shroud | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Cooling Unit
| 20***60 | Evaporator | 1 |
| 20***70 | Case Ass'Y | 1 |
| 20***80 | Grille Ass'Y | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Head Guard
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Light Work Bucket?0.5m3?Width 1000mm
| 09***89 | Pin | 5 |
| 20***30 | Tooth, Center | 5 |
| 20***40 | Adapter (Welded) | 5 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Long Arm
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 4 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 1 |
| 07***10 | Hose,(With Wire) (Trimming) | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Pre-Filter (Except Japan)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Radio-Less And Heater-Less
| 01***10 | Screw | 7 |
| 01***03 | Nut (Welded) | 2 |
| 01***10 | Washer,(Except Japan) | 7 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Ripper
| 04***22 | Pin,Cotter? Pin | 3 |
| 09***89 | Pin | 1 |
| 09***08 | Pin,(Without Pin Puller) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Ripper Bucket
| 09***08 | Pin,(Without Pin Puller) | 3 |
| 17***30 | Point,(For Multi Ripper) | 3 |
| 20***10 | Bucket Ass'Y,Ripper? 0.3m3 | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Semi-Long Arm
| 07***75 | Fitting,Grease (Without Lub. Piping) | 1 |
| 07***15 | Hose | 2 |
| 07***60 | Seal,(Y1620-41a0a-14) | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Shallow Bottom Bucket?0.35m3? Width 825mm
| 01***62 | Bolt | 8 |
| 01***28 | Nut (Std) | 8 |
| 09***89 | Pin | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Side Ditching Boom
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Side Ditching Boom Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***65 | Bolt (M12-1.75x65) | 6 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Slope Granding Bucket
| 20***10 | Bucket Ass'Y,Slope Finishing | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Track Frame Guard
| 01***30 | Bolt,Radio Controlled Slag Handling | 7 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***40 | Bolt,(For Center Guard) | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Trapezoidal Bucket
| 01***55 | Bolt, Strut Mounting - To Radiator And Rear Frame | 12 |
| 01***16 | Nut,(Balancer) | 12 |
| 01***60 | Flat Washer - M20 (Hardened) | 12 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Trenching Bucket?0.16m3?Width 450mm
| 01***62 | Bolt | 8 |
| 01***28 | Nut (Std) | 8 |
| 09***89 | Pin | 3 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Trenching Bucket?0.26m3?Width 600mm
| 01***62 | Bolt | 4 |
| 01***28 | Nut (Std) | 4 |
| 09***89 | Pin | 3 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Trenching Bucket?0.33m3?Width 700mm
| 01***62 | Bolt | 8 |
| 01***28 | Nut (Std) | 8 |
| 09***89 | Pin | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Water Separator
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Water Separator And Pre Fuel Filter
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
| 01***35 | Screw | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Optional Parts : Window Washer
| 01***16 | Bolt (Welded) | 2 |
| 01***12 | Screw,(Additional Sun Visor) | 2 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 2 |
Revolving Frame And Cab
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Car Heater (Pc100)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 07***59 | Clamp,See Fig. K4010-05a0 | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Car Heater (Pc100ss)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 07***59 | Clamp,See Fig. K4010-05a0 | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Cover (Except Japan)
| 20***30 | Cover,(English) | 1 |
| 20***90 | Cover,(With Fuel Filter) (English) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (1/4) (Pc100)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 28 |
| 01***32 | Washer,(With Auto Emergency Steering) | 28 |
| 04***00 | Plate,(Not Used When Ventilator) (Welded) | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (1/9) (Pc100ss)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 49 |
| 01***10 | Screw | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (2/4) (Pc100)
| 01***16 | Bolt (Welded) | 1 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 18 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (2/9) (Pc100ss)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 25 |
| 01***20 | Screw,(Not Used With Ventilator) | 1 |
| 01***15 | Nut,Lock | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (3/4) (Pc100)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***25 | Bolt - Rear Guard Mounting | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (3/9) (Pc100ss)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 28 |
| 01***32 | Washer,(With Auto Emergency Steering) | 20 |
| 11***40 | Washer | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (4/4) (Pc100)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 24 |
| 01***18 | Washer,Spring | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (4/9) (Pc100ss)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (5/9) (Pc100ss)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 32 |
| 01***32 | Washer,(With Auto Emergency Steering) | 20 |
| 04***00 | Plate,(Not Used When Ventilator) (Welded) | 18 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (6/9) (Pc100ss)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 31 |
| 01***80 | Bolt,(Shim 5 Pieces Over) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 22 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (7/9) (Pc100ss)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 26 |
| 01***32 | Washer,(With Auto Emergency Steering) | 26 |
| 04***00 | Plate,(Not Used When Ventilator) (Welded) | 12 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (8/9) (Pc100ss)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 59 |
| 01***32 | Washer,(With Auto Emergency Steering) | 49 |
| 04***00 | Plate,(Not Used When Ventilator) (Welded) | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Machinery Compartment (9/9) (Pc100ss)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 40 |
| 01***32 | Washer,(With Auto Emergency Steering) | 34 |
| 04***00 | Plate,(Not Used When Ventilator) (Welded) | 37 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Mark And Plate (English) (Pc100)
| 01***08 | Screw, Terminal | 4 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 4 |
| 09***00 | Plate? Safety,Lock Lever (With Lock Pin) | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Mark And Plate (Indonesian) (Pc100)
| 01***08 | Screw, Terminal | 4 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 4 |
| 09***00 | Plate? Safety,Swing Lock Lever | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Operator'S Cab (1/7)
| 01***12 | Bolt,(Without R.P.C.U.) | 6 |
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Operator'S Cab (2/7)
| 01***25 | Bolt (M6-1.00x25) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***55 | Bolt | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Operator'S Cab (3/7)
| 01***16 | Screw,(For Alternator 50a) | 4 |
| 01***16 | Screw, Mount Parking Lights | 2 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 6 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Operator'S Cab (4/7)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Operator'S Cab (5/7)
| 01***08 | Screw, Terminal | 2 |
| 01***12 | Screw,(Additional Sun Visor) | 2 |
| 01***16 | Screw,(P.O.C. Model) (Except Japan) | 6 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Operator'S Cab (6/7)
| 01***12 | Screw | 2 |
| 01***08 | Screw, Terminal | 2 |
| 01***25 | Screw | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Operator'S Cab (7/7)
| 01***16 | Bolt (Welded) | 4 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 5 |
| 01***70 | Bolt, Heater Hose Clip | 9 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Operator'S Seat
| 01***20 | Bolt,(Large Capacity Type) (Std) | 5 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***10 | Nut,(Dust?Drip Proof? Trimming S.) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Revolving Frame (Pc100)
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
| 01***55 | Bolt, Mount Standard Weight | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Revolving Frame And Cab : Revolving Frame (Pc100ss)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
| 20***10 | Weight | 1 |
Swing System
Komatsu : Pc100-1(S/N 10001-Up) : Swing System : Swing Circle
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***00 | Bolt | 46 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
Komatsu : Pc100-1(S/N 10001-Up) : Swing System : Swing Machinery (1/2)
Komatsu : Pc100-1(S/N 10001-Up) : Swing System : Swing Machinery (2/2)
| 01***30 | Bolt,Radio Controlled Slag Handling | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
| 01***45 | Bolt, Mount Center Hinge Retainer (Lower) | 17 |
Komatsu : Pc100-1(S/N 10001-Up) : Swing System : Swing Motor
| 01***05 | Bolt, Mount Tube | 4 |
| 01***15 | Screw | 2 |
| 01***45 | Bolt | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Swing System : Swing Motor Brake Valve
| 01***18 | Bolt | 8 |
| 01***30 | Bolt, Mount Pump | 8 |
| 01***19 | Washer,Spring (With Extinguisher) (D31p) | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Swing System : Valve To/From Swing Motor Piping
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***50 | Bolt,(For Trimming Dozer) | 2 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 1 |
Tool And Kit
Komatsu : Pc100-1(S/N 10001-Up) : Tool And Kit : Tool
| 07***00 | Pump,Grease | 1 |
| 07***00 | Cartridge,Grease | 1 |
| 07***45 | Nozzle, Grease Pump (Non-Flexible Type) | 1 |
Travel And Final Drive
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Control Lever And Linkage (1/3)
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Control Lever And Linkage (2/3) (Except Japan)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***25 | Bolt - Rear Guard Mounting | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Control Lever And Linkage (3/3) (Except Japan)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***08 | Nut,R.H. Thread | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Final Drive(1/2)
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 10 |
| 01***50 | Screw | 8 |
| 01***40 | Bolt,(For Center Guard) | 38 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Final Drive(2/2)
| 01***30 | Bolt,Radio Controlled Slag Handling | 12 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 14 |
| 01***13 | Nut - Cylinder Mounting | 24 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Swivel Joint
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
| 04***30 | Ring, Retaining | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Swivel Joint To/From Travel Motor Piping
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***35 | Bolt,(Without Auto Priming System) | 8 |
| 01***50 | Bolt,(For Trimming Dozer) | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Travel Motor
| 01***45 | Hexagon Bolt | 8 |
| 01***42 | Washer,Spring (For Pedal Steering) | 8 |
| 01***08 | Washer | 2 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Travel Motor Brake Valve(#10o01-)
| 01***40 | Bolt,(For Position Fixing) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***18 | Bolt | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Valve To Tank And Motor Drain Piping (Pc100)
| 01***25 | Bolt - Rear Guard Mounting | 4 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Valve To Tank And Motor Drain Piping (Pc100ss)
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
| 01***11 | Nut,(With Under Mirror) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Travel And Final Drive : Valve To/From Swivel Joint Piping
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
| 01***70 | Bolt, Heater Hose Clip | 2 |
| 01***26 | Washer | 2 |
Under Carriage
Komatsu : Pc100-1(S/N 10001-Up) : Under Carriage : Carrier Roller
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 3 |
| 01***60 | Bolt, Trunnion Cap | 8 |
Komatsu : Pc100-1(S/N 10001-Up) : Under Carriage : Front Idler
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***10 | Nut,(Service Only) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 12 |
Komatsu : Pc100-1(S/N 10001-Up) : Under Carriage : Recoil Spring
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
| 01***70 | Bolt,(With Wear Guard) | 16 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Under Carriage : Track Frame
| 01***25 | Bolt - Rear Guard Mounting | 3 |
| 01***40 | Bolt,(For Center Guard) | 16 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 3 |
Komatsu : Pc100-1(S/N 10001-Up) : Under Carriage : Track Roller
| 01***50 | Bolt, Radiator To Frame | 48 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 48 |
| 04***16 | Pin,(Dowel) | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Under Carriage : Track Shoe
| 01***20 | Nut,Shoe (Kit) | 344 |
| 11***22 | Link,Track? L.H | 86 |
| 11***32 | Link,Track? R.H | 86 |
Work Equipment
Komatsu : Pc100-1(S/N 10001-Up) : Work Equipment : Arm
| 01***30 | Bolt,(For Center Guard) | 2 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Work Equipment : Boom
| 01***30 | Bolt,(For Center Guard) | 6 |
| 01***35 | Bolt,(For Pedal Steering) | 4 |
| 01***17 | Nut | 1 |
Komatsu : Pc100-1(S/N 10001-Up) : Work Equipment : Bucket?0.4m3?Width 825mm
| 01***62 | Bolt | 8 |
| 01***28 | Nut (Std) | 8 |
| 09***89 | Pin | 4 |
Komatsu : Pc100-1(S/N 10001-Up) : Work Equipment : Link
| 01***40 | Bolt | 2 |
| 01***20 | Bolt | 2 |
| 01***13 | Nut,Plate (Welded) | 8 |
PC100-1(S/N 10001-UP) serial number reference
On the PC100-1, the PIN/serial plate is stamped into the main frame at the front of the upper structure, between the two boom foot pivots, and is usually covered by a small Komatsu ID decal. For this vintage, read the plate as a straight sequential number (e.g. 10001, 10002, ...) rather than a letter-prefixed code; there is no alphabetic prefix ahead of the digits like on later Komatsu PIN systems, so the whole visible number is the serial, not a separate prefix plus suffix.
| Prefix | Identifies | Notes |
|---|---|---|
| 10001 | PC100-1 standard crawler excavator (base machine, all units) | Serial block covers the PC100-1 production run, built roughly 1981 to 1984, before the PC100-2 run begins at 13001. Fitted with the Komatsu S4D105-5 (S4D105-5A) naturally aspirated 4-cylinder diesel, around 60 kW. Operating weight near 10.5 t. This generation predates Komatsu's 17-character alphanumeric PIN convention; the whole family shares one straight sequential 6-digit numeric run starting at this point, with no separate alpha-coded sub-ranges documented for standard-undercarriage units. Confirm exact production-year cutoff with your dealer. |
Frequently asked questions
What engine powers the Komatsu PC100-1 (S/N 10001-UP)?
It uses Komatsu's own S4D105-5, a naturally aspirated 4-cylinder diesel displacing 4.33 L and rated around 60 kW (81 hp) gross.
What is the operating weight of the Komatsu PC100-1 (S/N 10001-UP)?
Operating weight is about 10.5 metric tons (23,148 lb), varying slightly with bucket, undercarriage, and attachment configuration.
What replaced the Komatsu PC100-1 (S/N 10001-UP)?
Komatsu replaced it with the PC100-2, followed by the PC100-3, PC100-5/-5C, and PC100-6, each generation adding more sophisticated hydraulics and electronic engine monitoring.
What PC100-1(S/N 10001-UP) owners discuss
How does the hydraulic system on this machine behave, especially right after startup or in cold weather?
This series runs an open-center hydraulic circuit with a fixed-displacement main pump and no electronic flow control. Operators describe boom, arm and swing response as sluggish or spongy until the oil reaches working temperature, which is normal for a system this age rather than a fault by itself. A proper warm-up (idle, then cycle each function unloaded) before working the machine clears most of the "lazy" feel reported on cold starts. If sluggishness persists after a full warm-up, suspect a worn main pump or tired relief valve rather than oil viscosity.
What undercarriage wear pattern is typical for a machine like this?
Undercarriage life is judged by percentage of shoe/pad, roller and idler material remaining rather than a single wear number. Owners commonly report that steering feel and ground grip start to suffer once shoes drop into the lower half of their service life. Because this weight class runs comparatively narrow shoes, working on hard or abrasive ground wears rollers and idlers faster than the pads themselves. Uneven side-to-side wear is common on machines that spent time on slopes or repetitive one-direction grading work.
Are there known engine quirks on this series compared with later PC100 generations?
This series uses a naturally aspirated four-cylinder diesel (S4D105 family) with a mechanical Diesel Kiki/Zexel-type injection pump and no turbo or electronic governor. Operators describe it as low-powered but simple next to the turbocharged engines fitted to later PC100 generations, with flat, predictable power delivery and none of the boost or turbo-lag complaints that come with later models. The main age-related issue reported is fuel-delivery drift: injection-pump delivery-valve seals and return-line O-rings harden over decades of service, showing up as hard cold starts, uneven idle, or light white smoke that clears once warm. That is normal wear for a pump this old, not a design fault.
What electrical or sensor problems come up most on this generation?
This series predates Komatsu's electronic monitor panel and diagnostic controller used on later PC100 generations, so there is no sensor network or fault-code system to troubleshoot. Reported electrical complaints are basic: corroded battery terminals and ground straps, worn starter relays, and weak charging output from an aging alternator or regulator causing slow cranking or dim gauges. Most no-start or intermittent-power complaints on machines this age trace back to wiring and connector corrosion rather than a failed component.
What wear items show up most on the swing motor and final drives?
Case-drain seal leakage at the swing motor and final-drive output is a recurring complaint on this platform, showing up as oil weeping at the motor-to-gearcase joint or a wet track near the sprocket. Owners note a leaking final drive does not always mean a bad motor; dirty case-drain oil or a clogged case-drain filter can produce the same symptom and gets checked first. On a machine of this age, it is common for at least one final drive or swing motor to already have been resealed in its service history.
Do the hydraulic cylinders on a machine this old typically drift or leak?
Yes. Rod and piston seals harden after decades of service, and boom, arm and bucket cylinder drift under load is a routine complaint on excavators of this vintage. Owners treat visible rod scoring, weeping at the rod seal, or a cylinder that creeps down within a few minutes of being parked loaded as a reseal job rather than something to run past. Because a drifting cylinder is holding a suspended load, have a dealer or qualified hydraulic shop verify cylinder integrity before returning a resealed cylinder to full working load.
What should I check before buying a used PC100-1(S/N 10001-UP)?
Check track, pad, roller and idler wear percentage and any side-to-side unevenness; hydraulic tank oil color (clear amber, not dark or milky) and seepage at the main pump, swing motor and final drives; swing-bearing play by slow-rotating the house and feeling for clunk or resistance; cold-start behavior and exhaust smoke color, since this engine has no turbo or electronics to mask a tired injection pump; and structural condition around the boom and arm pins and swing frame, since the machine is now over four decades old and rust-through or repair welds show up on unmaintained examples. Verify service history where available and budget for a full hydraulic and undercarriage inspection rather than relying on a walk-around alone. Have a dealer or qualified inspector confirm structural and hydraulic safety items before putting the machine into full working load.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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