Komatsu PC150-1(S/N 1001-UP)
Komatsuhydraulic excavatormedium (pc100 - pc270)

Komatsu PC150-1(S/N 1001-UP)

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu PC150-1 (S/N 1001-UP) is a mid-size hydraulic crawler excavator built roughly 1984-1988, the opening dash-number generation of the PC150 line. It runs Komatsu's 6D105 inline six-cylinder diesel, naturally aspirated with mechanical jerk-pump fuel injection and no electronic engine management, rated around 63 kW (about 84-85 hp) at 6.49 L displacement. Standard-undercarriage machines run about 14.5 t operating weight with a 510 mm triple-grouser track shoe and a monobloc boom; a longer-undercarriage PC150LC-1 version was also built in this window for firms needing extra stability on soft ground, though separate specs for that variant aren't documented for this exact serial range. Backhoe bucket capacity runs around 0.75 cubic meters. It served general excavation and utility-trenching work, built before Komatsu brought load-sensing hydraulics and onboard electronics to this size class.

The PC150-1 belongs to Komatsu's PC-1 dash-number generation, the company's first fully independent hydraulic excavator lineup after it ended its technical partnership with Bucyrus-Erie. That generation introduced a pump-neutral hydraulic system to cut fuel burn when the levers sat in neutral or under light load, ahead of the open-center load-sensing hydraulics Komatsu rolled out on later PC-2 and PC-3 models. The PC150-1 was succeeded by the PC150-3 (1988-1995) and later by PC150-5 and PC150-6 generations, each moving to different engines and hydraulic architecture as Komatsu modernized the line. Today the PC150-1 mainly turns up as an older working unit or a parts and rebuild donor: its mechanical fuel system and simple charging circuit are easier to diagnose in the field than later electronically managed machines, but the final drives and several other major components are long out of production and not interchangeable with later PC150 dash-generations, which keeps good used and rebuilt cores in demand.

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 PC150-1(S/N 1001-UP) specifications

Engine

Engine modelKomatsu 6D105, direct-injection diesel, naturally aspirated
Rated power63 kW (approx. 84 hp / 85 PS) per factory spec sheet
Displacement6.49 L (396 cu in)
Cylinders6, in-line
Speed at max torque1900 rpm
Emissions tierPredates emissions-tier regulation; this production run (1984-1988) came before Tier/Stage standards existed

Weights

Operating weight14.5 t (31,970 lb), standard-length (SL) undercarriage
Ground pressureNot documented for this exact serial range in available sources; verify with your dealer
Transport weightNot separately documented; treat as equal to operating weight for shipping estimates

Dimensions

Transport length8.35 m (27 ft 5 in)
Transport width2.65 m (8 ft 8 in)
Transport height2.905 m (9 ft 6 in)
Track shoe width510 mm (20 in), standard triple-grouser shoe
BoomMonobloc boom, standard equipment
Tail swing radius / ground clearance / undercarriage lengthNot documented for this exact serial range in available sources; verify with your dealer or the shop manual for S/N 1001-UP

Performance

Max dig depth, max reach, max dump height, max cutting heightNot documented for this exact serial range in available sources; original factory dig/reach/dump-height figures for this early production run were not found in current specification databases
Swing speed, travel speed, gradeability, drawbar pullNot documented for this exact serial range in available sources; verify with your dealer or the shop manual for S/N 1001-UP

Forces

Bucket digging force, arm/stick digging forceNot documented for this exact serial range in available sources; verify with your dealer or the shop manual for S/N 1001-UP

Service capacities (summary)

Fuel tank, hydraulic system, engine oil, cooling systemNot documented for this exact serial range in available sources; verify with your dealer or the shop manual for S/N 1001-UP

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

PC150-1(S/N 1001-UP) fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter) - Komatsu 6D105 dieselNot documented for this exact serial range in accessible sources; verify with your dealer or the shop manual for S/N 1001-UP.Komatsu genuine diesel engine oil (EO). Viscosity by climate: SAE 30 above roughly 0 C, SAE 10W-30 or 15W-40 across a broad temperature range, SAE 10W below freezing. Use an oil meeting API CD service class or later equivalent unless the OMM for this serial range specifies otherwise.
Cooling systemNot documented for this exact serial range in accessible sources; verify with your dealer or the shop manual for S/N 1001-UP.Komatsu genuine antifreeze/coolant, permanent-type ethylene-glycol base, mixed with water at a ratio set by expected ambient temperature. Komatsu recommends year-round use for corrosion protection, not only cold-weather freeze protection.
Fuel tankNot documented for this exact serial range in accessible sources; verify with your dealer or the shop manual for S/N 1001-UP.No. 2-D diesel fuel per ASTM D975. Switch to No. 1-D in cold weather for easier starting and less fuel waxing.
Hydraulic system, total (tank plus circuit)Not documented for this exact serial range in accessible sources; verify with your dealer or the shop manual for S/N 1001-UP.Komatsu genuine anti-wear hydraulic oil (HO). SAE 10W is the typical year-round grade for excavators of this generation; a heavier grade may apply for sustained high-ambient-temperature operation. Confirm the exact grade against the OMM for S/N 1001-UP.
Hydraulic tankNot documented for this exact serial range in accessible sources; verify with your dealer or the shop manual for S/N 1001-UP.Same hydraulic oil as the system fill above. Tank-only refill volume runs smaller than the total system figure once cylinders and lines are filled.
Final drive, each sideNot documented for this exact serial range in accessible sources. Do not substitute figures from PC150-3, PC150-5, or PC150-6 generations, which use different final drive hardware.Komatsu genuine gear oil (TO), roughly SAE 30 equivalent in temperate conditions, SAE 10W in cold climates.
Swing driveNot documented for this exact serial range in accessible sources; verify with your dealer or the shop manual for S/N 1001-UP.Komatsu genuine gear oil (TO), same family as the final drive fill: SAE 30 equivalent in temperate conditions, SAE 10W in cold weather.
Pilot / other circuitsNo separate fill point documented. This generation draws pilot pressure from the main hydraulic tank rather than a dedicated reservoir.Shares the hydraulic system oil listed above.
Grease (chassis and pin points)Spec only, no single fill volume; applied per point on the lubrication chart.Komatsu genuine multipurpose grease, lithium-base, NLGI No. 2, for general pin and bushing points. Molybdenum-disulfide grease for pin joints the lubrication chart flags for heavier load service.

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Komatsu PC150-1(S/N 1001-UP) maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil, coolant, and fuel levels before each shift; top off as needed.
  • Drain water and sediment from the fuel tank and check the machine for fresh leaks daily.
  • Walk around the boom, arm, bucket linkage, and undercarriage checking for loose bolts, cracks, or oil seepage.
  • Grease boom foot, arm, and bucket linkage pins weekly (every 50 hours).
  • Check track tension and clear debris from rollers, idlers, and sprockets weekly.
  • Check the air cleaner dust indicator and clean the outer element if it trips.
Every 250 h
  • Change engine oil and replace the oil filter element.
  • Replace the fuel filter cartridge and bleed the fuel system.
  • Check battery electrolyte level and specific gravity.
  • Check alternator and fan belt tension; verify charging voltage is in spec.
  • Grease upper and lower roller pins, idler, and swing circle gear teeth.
Every 500 h
  • Replace the hydraulic tank breather/return filter element.
  • Check and top off final drive and swing machinery gear oil.
  • Clean the fuel tank strainer and inspect fuel lines for wear or chafing.
  • Replace the corrosion resistor cartridge in the cooling system.
  • Check the swing brake for drag or uneven release and inspect the counterbalance valve shuttle if it does.
Every 1,000 h
  • Replace the hydraulic oil filter element.
  • Change final drive case oil and swing machinery gear oil.
  • Clean radiator and oil cooler fins of debris blocking airflow.
  • Retorque track shoe bolts to specification.
  • Check injector spray pattern and mechanical injection pump condition.
  • Check the main hydraulic pump piston-block housing nut torque if any joystick vibration has been reported.
Every 2,000 h
  • Replace hydraulic tank oil.
  • Check and adjust engine valve clearance.
  • Check and adjust fuel injection pump timing.
  • Replace air cleaner inner and outer elements.
  • Flush the cooling system and replace coolant.
  • Check swing bearing mounting bolt torque and bearing play.
Every 4,000 h
  • Pull oil samples from the engine, hydraulics, both final drives, swing drive, and coolant to guide overhaul planning.
  • Inspect and, if needed, rebuild the mechanical fuel injection pump and injectors.
  • Measure undercarriage wear on track links, rollers, idlers, and sprockets against service limits and replace components at the limit.
  • Inspect the final drives closely; parts are long out of production and not interchangeable with later PC150 dash-generations.
  • Inspect boom foot and stick pin and bushing wear and structural cracking; replace worn pins and bushings.

Servicing the PC150-1(S/N 1001-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

This generation has no ECM, so trend data comes from fluids and voltage, not fault codes. Pull oil samples from the engine, hydraulic system, both final drives, swing drive, and coolant on a set interval to catch wear metals and contamination before a component fails outright. Check charging voltage at each service: roughly 12.4-12.6V key-off, 13.8-14.4V at idle. Readings outside that band flag a failing alternator or regulator well before a hard-starting complaint shows up in the cab.

Corrective & Common Repairs

Vibration through the joysticks during any implement move often traces to a loose piston-block housing nut on the main hydraulic pump, not pump wear itself; check torque and the engine-to-pump coupling first. A swing that drags or releases unevenly points to a stuck shuttle valve in the counterbalance valve body or a sticking manual swing-lock pin. On the mechanically injected 6D105, cold-start smoke and harder starting usually trace to injector tip wear, valve-stem seals, or injection-pump timing drift, not one single failure.

Overhaul & Rebuild Points

The final drives are the biggest overhaul risk on this machine: parts are long out of production and not interchangeable with later PC150 dash-generations, so a failure can leave it down indefinitely. Budget for full undercarriage renewal at high hours: sprocket tooth wear from chain pitch stretch, weeping roller and idler seals, and persistent track sag are normal end-of-life symptoms, not defects. A slow boom-lift cycle under load signals a tired main pump or worn boom holding valve; inspect boom foot and stick pins for cracking at the same time.

Seasonal & Environment Servicing

Cold weather hits the mechanically injected 6D105 hardest: there is no electronic cold-start assist beyond the stock system, so white or blue smoke and hard starting tend to show up first as temperatures drop; check injector tips, valve-stem seals, and injection timing before winter. Verify charging voltage stays in spec in cold ambient, since the basic charging system has little margin. Wet or soft ground accelerates weeping roller and idler seals and track sag; adjust tension and reseal before seasonal storage on the standard or long-undercarriage LC gauge.

PC150-1(S/N 1001-UP) common service parts

Part numberPart
600-311-9100Fuel Filter Ass'YCheck fitment →
(6136-72-6100)Fuel Filter Ass'Y,(See Fig.408)Check fitment →
09019-08035Wrench,Filter (For Add. Fuel Filter)Check fitment →
6712-81-8620Plate? Caution,Additional Fuel FilterCheck fitment →
09637-30161Plate? Instruction,Air Cleaner (Single Element)Check fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

PC150-1(S/N 1001-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
Charge lamp (red)Alternator/charging circuit fault; battery is not receiving charge.Broken or slipping fan belt, failed alternator, loose or corroded battery and charging wiring.Check belt tension and condition, inspect alternator and battery connections, test charging output.
Engine oil pressure lamp (red)Engine lubrication pressure has dropped below the safe minimum.Low oil level, clogged oil filter, worn oil pump, faulty pressure sender.Stop the engine at once, check oil level and filter condition, inspect the pressure sender before restart.
Coolant temperature lamp (red)Engine coolant has exceeded normal operating temperature.Low coolant level, clogged radiator core, failed thermostat, loose or broken fan belt.Idle the engine to cool down, check coolant level and radiator for blockage, inspect thermostat and belt.
Air cleaner restriction indicatorIntake air filter element is clogged, restricting airflow to the engine.Dirty or saturated air filter element, damaged intake hose or loose clamp.Inspect and clean or replace the filter element, check intake ducting for leaks or damage.
Preheat (glow) indicator lampShows the intake air preheat device is energized for cold-start assist.Normal cold-start cycle; a lamp that fails to light can mean a bad heater relay or wiring fault.Let the preheat cycle finish before cranking; if the lamp never lights, check the heater relay and wiring.
Fuel level lampFuel tank level has reached the low-fuel threshold.Tank genuinely low on fuel, or a faulty level sender/float giving a false reading.Refuel; if the lamp stays on with a full tank, check the sender and float.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

PC150-1(S/N 1001-UP) attachments & work tools

Buckets

This is a 14.5 t (32,000 lb) class base machine. Factory general-purpose bucket capacity runs near 0.75 m³ (0.98 cu yd) struck; general-purpose buckets for this class span roughly 450 to 1220 mm (18-48 in) wide, with narrower heavy-duty/rock buckets in the same 450-760 mm (18-30 in) band trading capacity for wall thickness and tip strength. All are pin-on mount, with a 70 mm bucket pin diameter common across the class.

Hydraulic hammers

Carrier weight puts this machine in the 10-16 t breaker bracket: a medium hammer class with roughly 68-70 mm chisel diameter and working pressure near 150-170 kg/cm² (147-166 bar / 2,130-2,410 psi). A mid-size box or side-rod breaker suited to general demolition and secondary rock breaking is the right fit for this carrier; heavier quarry-class hammers exceed its lift and hydraulic capacity.

Quick couplers

As a first-generation (1984-1988) base machine, the PC150-1 was not built with a factory quick-coupler linkage. Aftermarket hydraulic pin-grabber couplers sized to the 70 mm pin class are the common retrofit for this carrier, and they need a dedicated coupler hydraulic line with a pressure-sensing/check-valve safety circuit run from the arm.

Thumbs/grapples

A hydraulic thumb sized to the same 70 mm pin class as the bucket bolts onto the bucket/stick pin and pivots off the stick; it needs its own auxiliary hydraulic line to power the thumb cylinder. Rotating or pipe/pallet grapples sized for this carrier are also used but add a rotator circuit on top of the open/close line.

Rippers

A single-shank ripper that pins onto the same bucket-linkage pins as the digging bucket is the standard ripper attachment for this class; it needs no hydraulic supply, relying on stick/arm breakout force instead. Documented penetration depth for single-shank rippers in this size range is around 1.2 m (47 in).

Hydraulic kit notes

The factory circuit on this machine is sized only for boom, arm, bucket, swing, and travel; running a breaker, hydraulic thumb, or grapple rotator needs an auxiliary attachment line tapped into the machine's own pump flow and pressure, not a separate high-flow retrofit. A factory tool attachment-line option was catalogued for this model, but exact flow/pressure figures vary by serial-range configuration and should be confirmed against the pump data plate before matching a breaker or rotator.

All PC150-1(S/N 1001-UP) assemblies by section

Every catalogued assembly group for the Komatsu PC150-1(S/N 1001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

6d105-1u Engine S/N 52271-Up
Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Additional Fuel Filter
07***12Gasket,Mechanical Pump Piping2
60***00Fuel Filter Ass'Y1
60***20Cartridge,Pref1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Air Cleaner
01***25Bolt,(Sandy? Dusty Terrain Spec.)1
01***30Bolt,(For France Noise Suppression)3
01***06Nut, Regular Hexagon (M8-1.25)6
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Air Intake Manifold And Connection
01***20Bolt2
01***50Bolt,(For Trimming Dozer)2
01***65Bolt,(For Alternator Bracket Mount)10
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Alternator (25a)(#52271-66009)
60***40Alternator A. (25a),(See Fig.0641)1
KD***52Bolt,Through3
KD***70Rear Bracket Ass'Y1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Alternator (25a)(#66010-)
60***30Alternator A. (25a),(With Non Hardening Pulley)1
KD***57Bearing,Ball? Front1
KD***70Bracket,Front1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Alternator (35a)
60***40Alternator A. (35a)1
KD***31Bushing,Insulator2
KD***57Bearing,Ball? Front1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Alternator And Mounting (25a)(#52271-66009)
01***25Bolt,(Sandy? Dusty Terrain Spec.)1
01***30Bolt,(For Trimming Dozer)1
01***11Nut,(For Center Guard)1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Alternator And Mounting (25a)(#66010-)
01***25Bolt,(Sandy? Dusty Terrain Spec.)1
01***30Bolt,(For Trimming Dozer)1
01***11Nut,(For Center Guard)1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Alternator And Mounting (35a)
01***65Bolt,(For Alternator Bracket Mount)2
01***25Bolt,(Sandy? Dusty Terrain Spec.)1
01***70Bolt,(With Wear Guard)1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Camshaft And Tappet
01***25Bolt,(Without Auto Priming System)2
01***25Washer,Spring?(Sandy And Dusty Spec.)2
01***16Washer,(For Shipping)2
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Corrosion Resistor
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***29Washer,Spring (Cold Weather Spec.)4
01***30Washer,Spring(Sandy?Dusty Terrain S.)4
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Crankshaft
01***25Bolt - Rear Guard Mounting6
01***36Washer,Radio Controlled Slag Handling6
61***11Bolt,Nylock (K2)1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Cylinder Block
01***20Bolt,(Sandy? Dusty Terrain Spec.)2
01***25Bolt,(Sandy? Dusty Terrain Spec.)1
01***30Bolt,(For France Noise Suppression)4
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Cylinder Head
Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Cylinder Head Cover(#52271-68528)
01***25Washer,Spring?(Sandy And Dusty Spec.)2
02***22Bolt3
02***22Bolt2
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Cylinder Head Cover(#68529-)
07***23Clamp - Hose1
61***90O-Ring,Breather1
61***50Hose,Breather1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Engine Support
01***40Bolt,(Dust And Dirt Protection)8
01***45Bolt,(Cold Terrain Spec.)8
01***32Washer,(With 150mm Spill Guard)8
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Exhaust Manifold
01***16Bolt,(For Slag Handling)2
01***60Bolt (M10-1.50x60)1
01***00Bolt (M10-1.50x100)9
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Flywheel And Flywheel Housing
01***40Bolt,(Dust And Dirt Protection)8
01***45Bolt,(Cold Terrain Spec.)1
01***60Bolt, Trunnion Cap2
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Front Cover
01***22Bolt,(Cold Terrain Spec.)4
01***25Bolt,(Without Auto Priming System)4
01***60Bolt,(Without Alternator Bracket)10
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Filter
07***12Gasket,Mechanical Pump Piping1
07***12Gasket,(Without Air Compressor Type) (K1)1
60***10Plug,(For Shipping) (Not Shown)1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Injection Pump (Coupling)
DK***00Bolt1
DK***00Washer,Lock2
DK***00Coupling,Cross1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Injection Pump (Feed Pump)
DK***20Bolt, Joint1
DK***20Pump,Priming1
DK***20Housing1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Injection Pump (Governor) (1/2)(#52271-60888)
DK***20Flyweight Ass'Y1
DK***00Adapter1
DK***00Nut,Lock1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Injection Pump (Governor) (1/2)(#60889-)
DK***20Flyweight Ass'Y1
DK***00Adapter1
DK***00Nut,Lock1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Injection Pump (Governor) (2/2)(#52271-60888)
DK***40Gasket,Air Compressor2
DK***20Capsule,Spring1
DK***00Nut,Cap1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Injection Pump (Governor) (2/2)(#60889-)
DK***40Gasket,Air Compressor2
DK***20Capsule,Spring1
DK***00Nut,Cap1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Injection Pump (Pump)
61***20Injection Pump Ass'Y1
61***21Injection Pump Ass'Y1
DK***10Washer,Spring1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Injection Pump And Piping
01***70Bolt4
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
01***35Bolt, Mounting - Flywheel Housing End6
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Fuel Nozzle And Spill Pipe
01***55Bolt,(For Trimming Dozer)12
01***25Washer,Spring?(Sandy And Dusty Spec.)12
07***12Gasket,Mechanical Pump Piping2
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Gasket Kit
07***70O-Ring,(For Intake Air Cover)1
07***00O-Ring,(F4350-65a1 -5 )1
07***45O-Ring,(F4320-61a0 -16 ), O-Ring; Was 07000-021451
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Lubricating Oil Cooler
01***25Bolt,(Without Auto Priming System)5
01***30Bolt,(Cold Terrain Spec.)3
01***35Bolt,(Without Auto Priming System)16
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Lubricating Oil Fliter And Bracket
01***20Bolt,(Sandy? Dusty Terrain Spec.)3
01***65Bolt,(For Alternator Bracket Mount)1
01***90Bolt1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Lubricating Oil Pump And Suction Pipe
01***25Bolt,(Without Auto Priming System)3
01***30Bolt,(Cold Terrain Spec.)1
01***40Bolt,(For Position Fixing)1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Muffler
01***40Bolt,(For Position Fixing)1
01***20Bolt,(Large Capacity Type) (Std)2
01***25Bolt,(Sandy? Dusty Terrain Spec.)4
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Oil Pan
01***22Bolt,(Cold Terrain Spec.)29
01***25Bolt,(Without Auto Priming System)8
01***30Bolt,(Cold Terrain Spec.)1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Piston And Connecting Rod
04***18Ring, Retaining2
61***30Piston Ring Ass'Y6
61***10Piston Ass'Y6
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Regualtor And Heater Signal
60***70Switch,Air Intake Heater1
60***60Switch,Heater Relay1
60***71Signal,Signal1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Rocker Arm
01***80Bolt,(Shim 5 Pieces Over)2
01***06Nut, Regular Hexagon (M8-1.25)12
01***36Washer,Radio Controlled Slag Handling6
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Starting Motor (7.5kw)
60***81Starting Motor Ass'Y,7.5kw1
KD***80Washer Ass'Y,(Not Shown)1
KD***70Center Bracket A1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Starting Motor And Mounting
01***35Bolt - Torque Converter Totransmission Mounting3
01***36Washer,Radio Controlled Slag Handling3
07***00O-Ring,(F4350-65a1 -5 )1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Tool
09***35Wrench,Filter (For Add. Fuel Filter)1
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Water Pump And Cooling Fan
01***16Bolt,(For Slag Handling)2
01***30Bolt,(Cold Terrain Spec.)3
01***55Bolt,(For Suction? Reversible Fan)2
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Komatsu : Pc150-1(S/N 1001-Up) : 6d105-1u Engine S/N 52271-Up : Water Separator
07***60O-Ring,(For Pc750?800?1800) (A2610)1
60***00Water Separator A.,(4d105-5h? 4d105-5t)1
60***60Plug,Drain (4d105-5h? 4d105-5t)1
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Engine Related Parts And Electrical System
Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Auto Deceleration Cylinder
07***15O-Ring,Regulator Valve1
07***22O-Ring,(F5350-63a0 -26 )1
07***28O-Ring,(F5350-63a0 -10 )1
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Battery
01***30Bolt,(Cold Terrain Spec.)1
01***20Bolt,(For Quick Shift) (Mitsubishi)5
01***18Bolt1
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Electrical System
01***16Bolt (With Air Heater & Conditioner)6
01***20Bolt,(For Quick Shift) (Mitsubishi)2
01***30Bolt-Hex, Bolt,(With Center Guard)1
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
01***45Bolt,(For Power Tilt Mech Angle)8
01***45Bolt, Mounting Bracket To Radiator (Top)8
01***32Washer,(Not Used With Emergency Str.)8
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Fuel Control Lever
01***16Bolt (With Air Heater & Conditioner)1
01***30Bolt,(For Quick Shift) (Mitsubishi)3
01***45Bolt2
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Fuel Control Linkage
01***20Bolt,(With Auto Emergency Steering)1
01***20Bolt,(For Quick Shift) (Mitsubishi)3
01***30Bolt,(For Quick Shift) (Mitsubishi)1
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***20Bolt,(Without Rops Guard? Canopy)2
01***35Bolt, Hydraulic Tank Mounting4
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Hydraulic Piping (Pump To/From Valve To/From Auto Deceleration Cylinder)
01***30Bolt,(For Mechanical Governor)3
01***23Washer, Wiring Harness Mounting Bracket3
07***23O-Ring,(F4350-66a1 -1c )3
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Instrument Panel (1/2)
01***12Screw,(For Side Lamp) (Not Shown)2
01***16Screw7
01***10Washer,Spring (For Engine Room Lamp)2
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Instrument Panel (2/2)
01***12Bolt, Bolt,(No Need To Quick Shift)1
01***16Bolt, Mount Washer Tank To Bracket, Bolt2
01***20Screw (Not Illustrated)4
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Pilot Valve (For Auto Deceleration)
01***16Bolt, Mount Washer Tank To Bracket, Bolt8
01***19Washer,Spring (With Extinguisher) (D31p)8
07***21O-Ring (Kit)2
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Power Take Off
01***40Bolt, Mount Master Brake Cylinder9
01***45Bolt,(For Power Tilt Mech Angle)3
01***50Bolt6
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Radiator And Oil Cooler
01***20Bolt,(With Auto Emergency Steering)8
01***20Bolt,(For Quick Shift) (Mitsubishi)19
01***75Bolt, Tube Mounting4
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Komatsu : Pc150-1(S/N 1001-Up) : Engine Related Parts And Electrical System : Radiator Piping
01***20Bolt,(With Auto Emergency Steering)2
01***20Bolt,(For Quick Shift) (Mitsubishi)1
01***25Bolt,(Without Rops Guard? Canopy)8
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Optional Parts
Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Additional Piping (Attachment Side) (1/2)
01***25Bolt,(Without Rops Guard? Canopy)6
01***60Bolt, Tube To Oil Cooler12
01***09Seat,(Welded To Revolving Frame)1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Additional Piping (Attachment Side) (2/2)
01***75Bolt,(For Adjusting)4
01***08Nut, Regular Hexagon (M10-1.50)4
01***11Nut,(With Under Mirror)4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Additional Piping (Chassis Side)
01***20Bolt,(With Auto Emergency Steering)4
01***30Bolt,(For Quick Shift) (Mitsubishi)8
01***60Bolt, Mount Tube To Switch Pump4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Battery And Plate (Cold Terrain Spec.)
20***20Plate? Caution,Eng. Oil (Cold Terrain Spec.)1
20***90Battery (195g51),(Nx300) (Large Capacity)2
61***10Plate? Caution,(Not Shown)1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Car Cooler Piping (1/2)
01***20Bolt,(With Auto Emergency Steering)5
01***30Bolt,(Not Used With Emergency Str.)4
01***06Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-108061
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Car Cooler Piping (2/2)
01***20Bolt,(With Auto Emergency Steering)4
01***30Bolt,(For Quick Shift) (Mitsubishi)3
01***25Bolt,(Without Rops Guard? Canopy)2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Car Cooler Related Parts
01***20Bolt,(With Auto Emergency Steering)4
01***25Bolt,(Without Rops Guard? Canopy)10
01***23Washer, Wiring Harness Mounting Bracket4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Compressor And Control Panel (For Car Cooler)
20***60Case Ass'Y1
20***70Switch1
20***80Resistor1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Condenser Unit (For Car Cooler)
20***70Condenser1
20***80Motor,Fan1
20***90Shroud1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Control Pedal And Linkage (For Additional Piping)
01***16Bolt (With Air Heater & Conditioner)2
01***25Bolt,Without Revolution Sensor1
01***25Bolt,(For Canvas Canopy?Head Guard)10
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Cooling Unit (For Car Cooler)
20***60Evaporator1
20***70Case Ass'Y1
20***80Grille Ass'Y1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Fuel Pre-Filter And Piping
01***30Bolt,(For Quick Shift) (Mitsubishi)1
01***35Bolt,(For Quick Shift) (Mitsubishi)2
01***25Bolt,(Without Rops Guard? Canopy)2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Head Guard
01***80Bolt, Mount Tubes To Switch And Work Pumps6
01***32Washer,(Not Used With Emergency Str.)6
04***60Screw,Machine Model (For Ec Reg.)4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Light Work Bucket? 0.65m3? Width 1100mm
09***96Pin, Mount Center Teeth (Tip Type)5
20***70Tooth5
21***22Adapter (Welded)5
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Long Arm
01***30Bolt,(Not Used With Emergency Str.)4
01***32Washer,(Not Used With Emergency Str.)4
07***34O-Ring,(For 2-Actuater Attachment)4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Revolving Frame And Floor Frame (For Additional Piping)
01***25Bolt,Without Revolution Sensor2
01***07Seat (Welded)4
01***10Nut,(Dust?Drip Proof? Trimming S.)3
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Ripper Bucket
09***08Pin,(Without Pin Puller)3
17***30Point,(For Multi Ripper)3
21***10Bucket Ass'Y1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Single Shank Ripper
09***08Pin,(Without Pin Puller)1
17***30Point,(For Multi Ripper)1
21***10Ripper Ass'Y,Single Shank1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Slope Finishing Bucket
Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Super Short Arm
01***30Bolt,(Not Used With Emergency Str.)4
01***32Washer,(Not Used With Emergency Str.)4
07***00Fitting, Grease - Upper Hinge Pin1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Trenching Bucket? 0.5m3? Width 900mm
01***62Bolt8
01***28Nut (Std)8
09***96Pin, Mount Center Teeth (Tip Type)4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Water Separator And Piping
01***30Bolt,(For Mechanical Governor)2
01***30Bolt,(For Quick Shift) (Mitsubishi)1
01***25Bolt,(Without Rops Guard? Canopy)2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts : Window Washer
01***16Bolt (Welded)2
01***12Screw,(Except Japan)2
01***13Washer,(For Alternator 50a)2
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Optional Parts (Special Application Parts)
Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : 4-Spool Control Valve L.H. (For U.S.A)(#1430-)
01***20Bolt,(For Quick Shift) (Mitsubishi)4
01***16Bolt (Op)4
01***20Bolt (Itl)6
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Brake Valve (For U.S.A)(#1430-)
01***65Bolt, Mount Radiator To Frame (Bottom)8
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)8
07***05O-Ring (Kit)1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Car Heater (For U.S.A)(#1430-)
01***16Bolt (With Air Heater & Conditioner)2
01***20Bolt,(With Auto Emergency Steering)5
01***25Bolt,Without Revolution Sensor2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Electrical System (For U.S.A)(#1430-)
01***16Bolt (With Air Heater & Conditioner)6
01***20Bolt,(For Quick Shift) (Mitsubishi)3
01***30Bolt-Hex, Bolt,(With Center Guard)1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Fuel Control Lever (For U.S.A)(#1430-)
01***16Bolt (With Air Heater & Conditioner)1
01***30Bolt,(For Quick Shift) (Mitsubishi)3
01***45Bolt2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Fuel Tank And Piping (For U.S.A)(#1430-)
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***20Bolt,(Without Rops Guard? Canopy)2
01***35Bolt, Hydraulic Tank Mounting4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Piping (For U.S.A)(#1430-) : Unit_02_of_02
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***30Bolt,(For Quick Shift) (Mitsubishi)2
01***16Bolt (Op)2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Piping (For U.S.A)(#1430-) : Unit_01_of_02
01***30Bolt,(For Quick Shift) (Mitsubishi)2
01***30Bolt,(Not Used With Emergency Str.)4
01***32Washer,(With Auto Emergency Steering)2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Piping (Pump To Valve) (For U.S.A)(#1430-)
01***20Bolt,(With Auto Emergency Steering)2
01***25Bolt,Without Revolution Sensor4
01***30Bolt,(For Mechanical Governor)16
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Piping (Pump To/From Valve Auto Deceleration Cylinder) (For U.S.A)(#1430-)
01***30Bolt,(For Mechanical Governor)3
01***23Washer, Wiring Harness Mounting Bracket3
07***23O-Ring,(F4350-66a1 -1c )4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Piping (Tank To/From Oil Cooler) (For U.S.A)(#1430-)
01***55Bolt, Mount Tube To Switch Pump4
01***60Bolt, Mount Tube To Switch Pump4
01***20Bolt,(Without Rops Guard? Canopy)1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Piping (Valve To Tank) (For U.S.A)(#1430-)
01***25Bolt,(Without Rops Guard? Canopy)2
01***30Bolt,(Not Used With Emergency Str.)8
01***45Bolt, Mounting Bracket To Radiator (Top)4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Piping (Valve To/From Arm Cylinder) (For U.S.A Or Tbg Spec.)(#1430-)
01***35Bolt,(For Position Fixing)4
01***40Bolt,(With Air Conditioner)2
01***45Screw2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Piping (Valve To/From Boom Cylinder) (For U.S.A)(#1430-)
01***30Bolt,(For Mechanical Governor)8
01***25Bolt,(Without Rops Guard? Canopy)2
01***30Bolt,(Not Used With Emergency Str.)2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Hydraulic Tank And Filter (For U.S.A)(#1430-)
01***25Bolt,(For Canvas Canopy?Head Guard)8
01***30Bolt,(Not Used With Emergency Str.)4
01***35Bolt, Hydraulic Tank Mounting4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Instrument Panel (1/2) (For U.S.A)(#1430-)
01***12Bolt, Bolt,(No Need To Quick Shift)1
01***12Screw,(For Side Lamp) (Not Shown)2
01***20Screw (Not Illustrated)4
See all parts with full part numbers in Heavy Parts AI →
Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Instrument Panel (2/2) (For U.S.A)(#1430-)
01***16Bolt, Mount Washer Tank To Bracket, Bolt2
01***30Bolt,(For Quick Shift) (Mitsubishi)6
01***16Bolt (Op)3
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Operator'S Cab (1/6) (For U.S.A)(#1430-)
01***12Bolt, Bolt,(No Need To Quick Shift)6
01***20Bolt,(With Auto Emergency Steering)2
01***30Bolt,(For Quick Shift) (Mitsubishi)14
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Operator'S Cab (2/6) (For U.S.A)(#1430-)
01***16Screw,(For Alternator 50a)2
01***20Screw3
01***13Washer,Spring(For Wiper Switch Earth)2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Operator'S Cab (3/6) (For U.S.A)(#1430-)
01***20Bolt,(With Auto Emergency Steering)10
01***12Screw,(Except Japan)2
01***25Screw4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Operator'S Cab (4/6) (For U.S.A)(#1430-)
01***08Screw4
01***12Screw,(Not Shown) (For Std Cab)4
01***10Screw (Op)2
See all parts with full part numbers in Heavy Parts AI →
Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Operator'S Cab (5/6) (For U.S.A)(#1430-)
01***20Bolt,(With Auto Emergency Steering)10
01***12Screw3
01***12Screw,(With Articulate Indicator)4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Operator'S Cab (6/6) (For U.S.A)(#1430-)
01***25Bolt,Without Revolution Sensor2
01***30Bolt,(For Quick Shift) (Mitsubishi)10
01***75Bolt6
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Operator'S Seat (1) (For U.S.A)(#1430-)
01***06Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-108064
20***40Belt,Seat1
20***60Washer4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Operator'S Seat (2) (For U.S.A)(#1430-)
01***20Bolt,(With Auto Emergency Steering)2
01***25Bolt,(For Canvas Canopy?Head Guard)19
01***08Screw, Terminal2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Swing Motor (For U.S.A)(#1430-)
01***30Bolt,(Without Shutter)8
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)8
07***18O-Ring,(See Fig.1601-29?1602-17)1
See all parts with full part numbers in Heavy Parts AI →
Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Swing Motor Parking Brake (For U.S.A)(#1430-)
01***45Hexagon Bolt8
01***42Washer,Spring (For Pedal Steering)8
01***08Washer2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Travel Assist Valve (For U.S.A)(#1430-)
01***32Washer,(Not Used With Emergency Str.)1
07***23O-Ring,(F4350-61a1b-29 )5
07***34O-Ring, O-Ring, Oil Level And Fill Plug1
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Travel Connection Valve (For U.S.A)(#1430-)
01***10Bolt, Fan Mounting4
01***65Screw16
01***32Washer,(With Auto Emergency Steering)4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Valve Control Lever (Travel) (For U.S.A)(#1430-)
01***16Bolt (With Air Heater & Conditioner)1
01***35Bolt, Bolt, Mount Tubes To Switch And Work Pumps4
01***25Screw2
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Valve Control Lever (Work Equipment? Swing) (For U.S.A)(#1430-)
01***16Bolt (With Air Heater & Conditioner)3
01***30Bolt,(For Mechanical Governor)12
01***25Bolt,(For Canvas Canopy?Head Guard)4
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Valve Control Linkage (Work Equipment?Swing)(1/2)(For U.S.A)(#1430-)
01***20Bolt,(With Auto Emergency Steering)2
01***25Bolt,(For Canvas Canopy?Head Guard)6
01***35Bolt,(For Quick Shift) (Mitsubishi)6
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Komatsu : Pc150-1(S/N 1001-Up) : Optional Parts (Special Application Parts) : Valve Control Linkage (Work Equipment?Swing)(2/2)(For U.S.A)(#1430-)
01***15Bolt (Op)1
01***35Bolt,(For Quick Shift) (Mitsubishi)1
01***65Bolt,(Except Japan)8
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Revolving Frame And Cab
Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Car Heater(#1001-1003)
01***30Bolt,(Not Used With Emergency Str.)2
01***32Washer,(Not Used With Emergency Str.)2
07***59Clamp,See Fig. K4010-05a04
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Car Heater(#1004-)
01***30Bolt,(Not Used With Emergency Str.)2
01***32Washer,(Not Used With Emergency Str.)2
07***59Clamp,See Fig. K4010-05a04
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Machinery Compartment (1/4)
01***25Bolt - Rear Guard Mounting4
01***25Bolt,Without Revolution Sensor8
01***25Bolt,(Without Rops Guard? Canopy)26
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Machinery Compartment (2/4)
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***25Bolt,(Without Rops Guard? Canopy)44
01***08Screw4
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Machinery Compartment (3/4)
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***25Bolt,(Without Rops Guard? Canopy)17
01***08Screw2
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Machinery Compartment (4/4)
01***25Bolt,(Without Rops Guard? Canopy)33
01***32Washer,(Not Used With Emergency Str.)33
21***11Cover1
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Mark And Plate (English)
01***12Screw,(For Side Lamp) (Not Shown)4
01***10Washer,Spring (For Engine Room Lamp)4
09***00Plate? Safety,Lock Lever (With Lock Pin)1
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Mark And Plate (English) (For U.S.A)(#1430-)
01***12Screw,(For Side Lamp) (Not Shown)4
01***10Washer,Spring (For Engine Room Lamp)4
09***00Plate? Safety,Lock Lever (With Lock Pin)1
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Operator'S Cab (1/6)
01***12Bolt, Bolt,(No Need To Quick Shift)6
01***20Bolt,(With Auto Emergency Steering)2
01***30Bolt,(For Quick Shift) (Mitsubishi)14
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Operator'S Cab (2/6)
01***16Screw,(For Alternator 50a)2
01***20Screw3
01***13Washer,Spring(For Wiper Switch Earth)2
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Operator'S Cab (3/6)
01***20Bolt,(With Auto Emergency Steering)10
01***12Screw,(Except Japan)2
01***25Screw4
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Operator'S Cab (4/6)
01***12Screw,(Not Shown) (For Std Cab)4
01***10Screw (Op)2
01***45Plain Washer4
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Operator'S Cab (5/6)
01***20Bolt,(With Auto Emergency Steering)10
01***12Screw3
01***12Screw,(With Articulate Indicator)4
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Operator'S Cab (6/6)
01***25Bolt,Without Revolution Sensor2
01***30Bolt,(For Quick Shift) (Mitsubishi)10
01***75Bolt6
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Operator'S Seat
01***20Bolt,(For Quick Shift) (Mitsubishi)5
01***30Bolt,(Not Used With Emergency Str.)4
01***10Nut4
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Komatsu : Pc150-1(S/N 1001-Up) : Revolving Frame And Cab : Revolving Frame
01***20Bolt,(For Quick Shift) (Mitsubishi)2
01***20Bolt,(Without Rops Guard? Canopy)4
01***25Bolt,(Without Rops Guard? Canopy)4
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Swing And Control Systems
Komatsu : Pc150-1(S/N 1001-Up) : Swing And Control Systems : Brake Valve
01***65Bolt, Mount Radiator To Frame (Bottom)8
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)8
07***05O-Ring (Kit)1
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Komatsu : Pc150-1(S/N 1001-Up) : Swing And Control Systems : Hydraulic Piping (Valve To/From Swing Motor)
01***40Bolt,(With Air Conditioner)4
01***55Bolt,(10m)4
01***30Bolt,(Not Used With Emergency Str.)4
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Komatsu : Pc150-1(S/N 1001-Up) : Swing And Control Systems : Swing Circle
01***60Flat Washer - M20 (Hardened)50
04***42Pin,Dowel? Gear Case Cover2
07***00Fitting, Grease - Upper Hinge Pin4
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Komatsu : Pc150-1(S/N 1001-Up) : Swing And Control Systems : Swing Machinery
01***30Bolt,(Not Used With Emergency Str.)3
01***50Bolt,(For Tbg/Abe Spec.)14
01***85Bolt,(Tree Pusher Dozer)8
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Komatsu : Pc150-1(S/N 1001-Up) : Swing And Control Systems : Swing Motor
01***30Bolt,(Without Shutter)8
01***36Wahser-Spring, Washer,Spring (Without Towing Winch)8
07***18O-Ring,(See Fig.1601-29?1602-17)1
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Tool And Kit
Komatsu : Pc150-1(S/N 1001-Up) : Tool And Kit : Service Kit
07***05O-Ring, Steering Pump Mounting2
07***15O-Ring,(Y1621-01a0-10)1
07***30O-Ring,Boom (For 50 Feet Long Front)4
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Komatsu : Pc150-1(S/N 1001-Up) : Tool And Kit : Spare Parts (For U.S.A.)(#1430-)
04***57V-Belt Set,(35a Alternator? S6d105-1ww)1
07***80O-Ring, Front Coupling Cage2
07***34O-Ring, O-Ring,Drain Plug? R.H. Half Tank2
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Komatsu : Pc150-1(S/N 1001-Up) : Tool And Kit : Tool
07***00Pump,Grease1
07***50Pump, (Bellows Type)1
07***00Cartridge,Grease1
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Travel And Final Drive
Komatsu : Pc150-1(S/N 1001-Up) : Travel And Final Drive : Hydraulic Piping (Swivel Joint To/From Travel Motor)
01***40Bolt,(With Air Conditioner)8
01***55Bolt,(10m)8
01***35Bolt,(For Quick Shift) (Mitsubishi)2
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Komatsu : Pc150-1(S/N 1001-Up) : Travel And Final Drive : Hydraulic Piping (Valve To/From Swivel Joint)
01***30Bolt,(For Mechanical Governor)32
01***25Bolt,(Without Rops Guard? Canopy)2
01***50Bolt,(For Strengthened Cover)4
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Komatsu : Pc150-1(S/N 1001-Up) : Travel And Final Drive : Sprocket
01***55Bolt,(For Reinforced Type)36
01***45Washer,(For Travel Motor) (Not Show)36
21***51Sprocket2
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Komatsu : Pc150-1(S/N 1001-Up) : Travel And Final Drive : Swivel Joint
01***35Bolt,(For Position Fixing)4
01***25Washer,Spring?For Additional Rear Lam4
04***30Ring, Retaining1
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Komatsu : Pc150-1(S/N 1001-Up) : Travel And Final Drive : Travel Motor (1/2)
01***35Bolt8
06***05Bearing,Ball1
07***09O-Ring,(For Dual Tilt Dozer)1
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Komatsu : Pc150-1(S/N 1001-Up) : Travel And Final Drive : Travel Motor (2/2)
07***06O-Ring,(Not Shown)1
07***30O-Ring1
07***60O-Ring,(F4350-60a0 -15 )1
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Under Carriage
Komatsu : Pc150-1(S/N 1001-Up) : Under Carriage : Carrier Roller(#1001-1162)
01***20Bolt,(For Quick Shift) (Mitsubishi)2
01***25Bolt,(For Canvas Canopy?Head Guard)3
01***85Bolt,(Tree Pusher Dozer)4
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Komatsu : Pc150-1(S/N 1001-Up) : Under Carriage : Carrier Roller(#1163-)
01***20Bolt,(For Quick Shift) (Mitsubishi)2
01***25Bolt,(For Canvas Canopy?Head Guard)3
01***85Bolt,(Tree Pusher Dozer)4
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Komatsu : Pc150-1(S/N 1001-Up) : Under Carriage : Front Idler
01***13Nut,(See Fig.337)2
01***45Washer,(For Travel Motor) (Not Show)2
04***16Pin,(Dowel)4
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Komatsu : Pc150-1(S/N 1001-Up) : Under Carriage : Recoil Spring
01***20Bolt,(For Quick Shift) (Mitsubishi)4
01***85Bolt,(For Perforated Mask)16
01***32Washer,(With Auto Emergency Steering)4
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Komatsu : Pc150-1(S/N 1001-Up) : Under Carriage : Track Frame(#1001-1003)
01***25Bolt,(Without Rops Guard? Canopy)26
01***30Bolt,(Not Used With Emergency Str.)8
01***45Bolt,(For Travel Motor) (Not Show)16
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Komatsu : Pc150-1(S/N 1001-Up) : Under Carriage : Track Frame(#1004-)
01***25Bolt,(Without Rops Guard? Canopy)31
01***30Bolt,(Not Used With Emergency Str.)8
01***45Bolt,(For Travel Motor) (Not Show)16
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Komatsu : Pc150-1(S/N 1001-Up) : Under Carriage : Track Roller
01***70Bolt,Rear Carrier (With Gumpad)48
01***45Washer,(For Travel Motor) (Not Show)48
04***16Pin,(Dowel)4
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Komatsu : Pc150-1(S/N 1001-Up) : Under Carriage : Track Shoe
01***22Nut? Shoe (Kit)344
12***11Shoe,Track86
13***26Link,Track? L.H86
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Work Equipment
Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment : Arm
01***30Bolt,(Not Used With Emergency Str.)4
01***32Washer,(Not Used With Emergency Str.)4
07***00Fitting, Grease - Upper Hinge Pin1
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment : Boom
01***30Bolt,(Not Used With Emergency Str.)6
01***40Bolt4
01***40Bolt2
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment : Bucket
01***62Bolt8
01***28Nut (Std)8
09***96Pin, Mount Center Teeth (Tip Type)5
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment : Link
01***60Bolt2
01***40Bolt2
01***13Nut,(For Adjustable Rod)8
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment : Lubrication Piping (For Boom)
01***12Bolt, Bolt,(No Need To Quick Shift)10
01***19Washer,Spring (With Extinguisher) (D31p)10
07***00Fitting, Grease - Upper Hinge Pin3
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Work Equipment Control System
Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : 3-Spool Control Valve? R.H.(1/2) (For R.H. Travel? Bucket? Boom)
01***20Bolt4
01***20Bolt (Itl)6
01***25Bolt, Seal Cover Mounting6
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : 3-Spool Control Valve? R.H.(2/2) (For R.H. Travel? Bucket? Boom)
01***05Nut,(For Air Conditioner Less), Nut1
07***12O-Ring (Itl)1
07***12Ring,Back-Up; Was 07001-02012, Ring,Back-Up (Itl)1
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : 4-Spool Control Valve? L.H.(1/2) (For L.H.Travel?Boom-Hi?Swing? Arm)
01***20Bolt4
01***20Bolt (Itl)8
01***25Bolt, Seal Cover Mounting8
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : 4-Spool Control Valve? L.H.(2/2) (For L.H.Travel?Boom-Hi?Swing? Arm)
01***05Nut,(For Air Conditioner Less), Nut1
07***12O-Ring (Itl)1
07***12Ring,Back-Up; Was 07001-02012, Ring,Back-Up (Itl)1
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Arm Cylinder
01***40Bolt,(With Air Conditioner)2
01***55Bolt,(10m)2
01***70Bolt (Op)4
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Boom Cylinder
01***40Bolt,(With Air Conditioner)8
01***55Bolt,(10m)8
01***25Bolt,(For Canvas Canopy?Head Guard)8
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Bucket Cylinder
01***40Bolt,(With Air Conditioner)4
01***55Bolt,(10m)4
01***25Bolt,(For Canvas Canopy?Head Guard)2
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve)
01***30Bolt,(For Mechanical Governor)16
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***80Bolt,(Not Shown)4
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Pump)
01***30Bolt,(For Quick Shift) (Mitsubishi)6
01***30Bolt,(Not Used With Emergency Str.)2
01***35Bolt, Bolt, Mount Tubes To Switch And Work Pumps4
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Piping (Tank To/From Oil Cooler)
01***55Bolt, Mount Tube To Switch Pump4
01***60Bolt, Mount Tube To Switch Pump4
01***20Bolt,(Without Rops Guard? Canopy)1
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Piping (Valve To Tank)
01***25Bolt,(Without Rops Guard? Canopy)2
01***30Bolt,(Not Used With Emergency Str.)8
01***45Bolt, Mounting Bracket To Radiator (Top)4
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Piping (Valve To/From Arm Cylinder)
01***35Bolt,(For Position Fixing)4
01***40Bolt,(With Air Conditioner)2
01***45Screw2
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Piping (Valve To/From Boom Cylinder)
01***30Bolt,(For Mechanical Governor)8
01***25Bolt,(Without Rops Guard? Canopy)2
01***30Bolt,(Not Used With Emergency Str.)2
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Piping (Valve To/From Bucket Cylinder)
01***25Bolt,(Without Rops Guard? Canopy)4
01***50Bolt,(For Strengthened Cover)4
01***11Nut,(With Under Mirror)4
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Pump (1/2)
01***25Bolt,Without Revolution Sensor4
01***30Bolt,(For Mechanical Governor)26
01***25Washer,Spring?For Additional Rear Lam4
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Pump (2/2)
01***25Bolt,Without Revolution Sensor8
01***25Washer,Spring?For Additional Rear Lam8
70***20Cover2
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Tank And Filter(#1001-1003)
01***25Bolt,(For Canvas Canopy?Head Guard)8
01***30Bolt,(Not Used With Emergency Str.)4
01***35Bolt, Hydraulic Tank Mounting4
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Hydraulic Tank And Filter(#1004-)
01***25Bolt,(For Canvas Canopy?Head Guard)8
01***30Bolt,(Not Used With Emergency Str.)4
01***35Bolt, Hydraulic Tank Mounting4
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Pc Regulator Valve
01***30Bolt,(For Quick Shift) (Mitsubishi)8
01***00Bolt, Mount Back-Up Alarm4
01***10Nut,(Without Air Conditioner)1
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Valve Control Lever (Travel)
01***16Bolt (With Air Heater & Conditioner)1
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***25Screw2
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Valve Control Lever (Work Equipment? Swing)
01***40Bolt,(With Air Conditioner)4
01***30Bolt,(Not Used With Emergency Str.)6
01***08Nut,R.H. Thread10
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Valve Control Linkage (Work Equipment?Swing) (1/2) (Except Japan)
01***16Bolt (With Air Heater & Conditioner)1
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***08Nut, Regular Hexagon (M10-1.50)2
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Valve Control Linkage (Work Equipment?Swing) (2/2) (Except Japan)
01***25Bolt,(Without Rops Guard? Canopy)2
01***08Nut,R.H. Thread6
01***32Washer,(Not Used With Emergency Str.)2
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Komatsu : Pc150-1(S/N 1001-Up) : Work Equipment Control System : Variable Slow Return Valve (For Arm)
01***25Bolt,Without Revolution Sensor8
01***25Washer,Spring?For Additional Rear Lam8
07***07O-Ring - (K10)1
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PC150-1(S/N 1001-UP) serial number reference

On this vintage PC150-1, the ID plate is stamped into the machine frame at the front, between the two hydraulic cylinder/arm mounts, usually with a small Komatsu decal fixed over the stamping. Unlike later Komatsu machines this plate carries just the model name (PC150-1 or PC150LC-1) plus a plain sequential serial number - there is no 3-letter alpha PIN code on this generation. Read the model name first, then match the plain serial number against the shop manual's S/N break points to pin down the exact production run.

PrefixIdentifies
1001-UPPC150-1 standard-carriage base machine
1001-UPPC150LC-1 long-carriage/wide-gauge variant

Frequently asked questions

What engine does the Komatsu PC150-1 (S/N 1001-UP) use?

It runs Komatsu's 6D105 inline six-cylinder diesel: naturally aspirated, mechanically (jerk-pump) fuel injected, with no electronic engine management. Factory rating is around 63 kW (about 84-85 hp) at 6.49 L displacement.

What is the operating weight of the PC150-1?

Around 14.5 t (about 32,000 lb) on the standard-undercarriage machine. A long-undercarriage PC150LC-1 offered in the same era ran somewhat heavier, though an exact figure isn't documented for this specific serial range; treat weight as varying by configuration.

What replaced the Komatsu PC150-1?

The PC150-3, built roughly 1988-1995, followed the PC150-1 in Komatsu's dash-number lineup. Later PC150-5 and PC150-6 generations continued to update the engine and hydraulics after that.

What PC150-1(S/N 1001-UP) owners discuss

What do owners report about the main hydraulic pump on the PC150-1(S/N 1001-UP), and what should I check if I feel vibration through the joysticks?
Vibration and knocking felt through the control levers whenever an implement moves shows up in owner reports on this machine. In one documented case the cause was not pump wear but a loose or missing nut retaining the piston-block housing on the main hydraulic pump, letting internal components shift under load. The drive coupling between the engine and the pump gearbox is another common vibration source once it wears. Before condemning the pump, check the piston-block housing hardware for correct torque and inspect the engine-to-pump coupling for play.
Why does the swing brake drag or fail to release cleanly on these machines, and is it a safety concern?
A swing brake that grabs, drags, or releases unevenly is a recurring complaint on mechanical and hydraulic-pilot Komatsu excavators of this era. The static swing brake is spring-applied and released by hydraulic pressure routed through a shuttle valve in the counterbalance valve body; a broken shuttle spring or trapped dirt keeps the shuttle from moving and the brake stays partially applied. Machines with a manual swing lock lever can show the same symptom if the lock pin sticks; rocking the house gently or working the bucket against the ground can free a stuck pin. Because a dragging or unpredictable swing brake changes how the upper structure holds and stops under load, have your dealer verify the counterbalance valve and brake condition before returning the machine to work.
What engine does the PC150-1(S/N 1001-UP) use, and what age-related quirks come with it?
This machine runs Komatsu's naturally aspirated 6D105-1 inline-six diesel, rated in the neighborhood of 63 kW (about 84 hp gross); exact published figures vary slightly by source. It uses mechanical (jerk-pump style) fuel injection with no electronic engine management. On mechanically injected diesels of this age and design, white or blue smoke at cold start and gradually harder starting typically trace to worn injector tips, tired valve-stem seals, or injection-pump timing drift rather than one dominant defect. There isn't a single well-documented failure pattern specific to this exact serial range online; routine injector service and a timing check are the usual first steps when smoke or starting performance degrades.
What electrical issues come up most on these older Komatsu excavators?
This generation predates onboard electronic engine and hydraulic controls, so most complaints are basic charging and starting issues, not sensor faults. Reversed battery polarity is reported to blow fuses hidden in the cab console even when the fuses look fine externally, so check every fuse after any battery work, not just the obvious ones. A failing alternator diode can open the starter safety relay circuit and leave the starter dead; if the starter won't engage, check the alternator before replacing the starter or relay. Charging voltage should read roughly 12.4 to 12.6V with the key off and about 13.8 to 14.4V at idle; readings well outside that range point to the alternator or regulator.
What undercarriage wear patterns should I expect on a machine this age?
As a standard-gauge crawler undercarriage typical of the mid-1980s PC150 line, expect the usual wear items for a machine run for decades: sprocket tooth wear from chain pitch stretch, weeping roller and idler seals, and track sag that needs periodic tensioning. None of this is a quirk unique to this serial range; it is the normal wear pattern for any crawler undercarriage under long service. Budget for undercarriage renewal based on hours and ground conditions, not as a sign of a specific defect.
What should I check when buying a used PC150-1(S/N 1001-UP)?
The biggest weak point on a machine this old is the final drive: parts are long out of production, and final drives and pumps from later PC150 dash-generations are not interchangeable with this one, so a failed unit can leave the machine down indefinitely. Inspect final drive condition closely and do not assume a salvage part will fit. Travel the machine in a straight line for a reasonable distance, at least 15 meters (50 ft), and watch for it pulling to one side, which points to travel motor or final drive wear. With the stick fully extended and the bucket in full dump, raise the boom to the stop at max idle and time it; experienced buyers use a few seconds as a rough benchmark, and this is a comparison point rather than a fixed spec since cycle time also depends on oil temperature. A noticeably slow lift points to a tired main pump or a worn boom holding valve. Pull oil samples from the engine, hydraulics, final drives, swing drive, and coolant before committing; sample results reveal wear and contamination a walk-around won't catch. Round out the check with structural cracks around the boom foot and stick pins, and hydraulic leaks at the control valve and cylinder glands. Given the boom-drop risk of a worn holding valve, have your dealer verify hydraulic holding-valve condition before heavy use.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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