Komatsuhydraulic excavatorsmall ( - pc90)
Komatsu PC09-1A(S/N 10001-UP (KUC SPEC.))
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC09-1 is a micro-excavator designed for tight spaces where larger machines cannot operate. It features a 6.8 kW (9.1 HP) engine, an operating weight ranging from 880 to 1,080 kg (1,940 to 2,381 lb), and a digging depth of 1.47 m (4 ft 10 in). Production began in 2012. It succeeded earlier micro-excavator models and is succeeded by the PC09-1B series. Configurations include a variable width undercarriage (180/225 mm), a tubular boom for visibility, and optional demolition breaker arms.
The PC09-1 introduced hydraulic undercarriage extension, allowing operators to switch between stability for digging and a narrow width for transport through doors. Its cast body and metal bonnet improved durability in urban environments. In the used market, it remains relevant for utility and landscaping work due to its compact radius and reliable Komatsu hydraulic system. Parts availability is supported by its long production run and shared components with other mini-excavator series.
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 PC09-1A(S/N 10001-UP (KUC SPEC.)) specifications
Engine
| Model | 2D70E |
| Gross/Net Power | 6.8 kW (9.1 HP) @ 2200 rpm |
| Displacement | 34.7 cu in (569 cc) |
| Cylinders | 2 |
| Emissions Tier | Tier 2 (per variant list) |
Weights
| Operating Weight | 980 - 1070 kg (2161 - 2359 lb) |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
| Transport Weight | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | 2.81 m (9 ft 3 in) |
| Transport Width | 0.85 m (2 ft 10 in) |
| Transport Height | 1.41 m (4 ft 8 in) |
| Tail Swing Radius | 0.79 m (2.6 ft) |
| Track Shoe Width | 180 mm (7.1 in) |
| Ground Clearance | 1.7 m (5.58 ft) |
| Undercarriage Length | Not documented for this exact serial range — verify with your dealer |
Performance
| Max Dig Depth | 1.47 m (4.82 ft) |
| Max Reach at Ground | 2.75 m (9.02 ft) |
| Max Dump Height | Not documented for this exact serial range — verify with your dealer |
| Max Cutting Height | Not documented for this exact serial range — verify with your dealer |
| Swing Speed | 8.3 rpm |
| Travel Speed | 1.5 km/h (0.93 mph) / 3 km/h (1.87 mph) |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
| Drawbar Pull | Not documented for this exact serial range — verify with your dealer |
Forces
| Bucket Digging Force | Not documented for this exact serial range — verify with your dealer |
| Stick/Arm Digging Force | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | 11.4 L (3.0 gal) |
| Hydraulic System/Tank | 16.4 L (4.3 gal) |
| Engine Oil | 0.5 L (0.13 gal) |
| Cooling System | 0.6 L (0.16 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC09-1A(S/N 10001-UP (KUC SPEC.)) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 1.9 L (0.5 gal) | Komatsu EO 15W-40 or 10W-30 |
| Cooling system | 2.3 L (0.6 gal) | Super-coolant AF-NAC |
| Fuel tank | 11.4 L (3 gal) | Diesel fuel |
| Hydraulic system total AND hydraulic tank | 9.1 L (2.4 gal) | Komatsu TO or equivalent ISO VG 46 hydraulic oil |
| Final drive (each) | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Swing drive | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Pilot/other circuits if listed | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Grease (spec only) | Not applicable | Lithium-based grease |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC09-1A(S/N 10001-UP (KUC SPEC.)) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the PC09-1A(S/N 10001-UP (KUC SPEC.)) beyond the schedule
Predictive Maintenance & Fluid Analysis
Use KOWA fluid analysis at every 500-hour interval to monitor hydraulic pump wear and engine contamination. Check coolant SCA levels at 500 hours to prevent cavitation in the 2D68E-N3C or 2D70E-5SBA engines. Monitor hydraulic oil particle count to protect the high-pressure common rail system. Track fuel dilution in engine oil to detect injector leaks early. Analyze final drive oil for gear wear metals to predict planetary failure before it occurs.
Corrective & Common Repairs
Replace hydraulic return filters at 500 hours to prevent valve spool wear. Inspect the tubular boom for hose chafing against the cast body. Check track tension weekly to reduce wear on the 180/225 mm variable undercarriage rollers. Replace fuel water separator elements frequently in wet conditions. Inspect the swing bearing for play and grease points regularly. Check hydraulic hose clamps for vibration damage near the engine compartment.
Overhaul & Rebuild Points
Inspect final drive seals and oil at 1,000 hours for leaks or metal content. Check swing machinery oil for contamination at 1,000 hours. Evaluate the hydraulic pump pressure and flow at 2,000 hours. Inspect the turbocharger blades for damage at 1,000 hours. Check structural welds on the boom and stick for fatigue cracks at 1,000 hours. Replace all hydraulic hoses at 2,000 hours or if cracking is visible.
Seasonal & Environment Servicing
Use low-temperature lubricants in cold climates to ensure smooth hydraulic flow. Drain water from the fuel separator daily in humid or wet conditions. Check the battery electrolyte level and charge in extreme cold. Inspect the radiator and oil cooler fins for debris buildup to prevent overheating in dusty environments. Ensure the variable undercarriage extension mechanism is clean and lubricated for reliable width adjustment.
PC09-1A(S/N 10001-UP (KUC SPEC.)) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| YM114654-55710 | Filter,Fuel | Fuel system service | Check fitment → |
| YM171051-92760 | Wrench,Fuel Filter? Water Separator | Fuel system service | Check fitment → |
| 20T-98-72410 | Plate? Caution,Engine Fuel Filter | Fuel system service | Check fitment → |
| 22F-98-17210 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| YM119332-92751 | Wrench,(For Engine Oil Filter) | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC09-1A(S/N 10001-UP (KUC SPEC.)) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E10 | Engine controller power failure | ECM power connection fault, blown fuse, or ground wire issue | Inspect ECM power connections, fuses, and ground wires |
| E11 | Engine protection—output power reduced | High coolant temperature, low oil pressure, or clogged air filter | Check coolant temperature, oil pressure, and air filter condition |
| CA115 | Engine crankshaft speed sensor failure | Broken sensor, wiring issue, or connector corrosion | Replace the speed sensor and verify voltage at the pin connector |
| CA441 | Battery voltage too low | Weak battery, faulty alternator, or loose connections | Replace the alternator or battery; check the voltage regulator |
| CA442 | Battery voltage too high | Faulty voltage regulator or alternator overcharging | Replace the alternator or battery; check the voltage regulator |
| AA10NX | Air cleaner clogging | Dirty or blocked air filter element | Replace the air filter |
| B@BCNS | Engine coolant overheating | Low coolant level, failed fan belt, or blocked radiator fins | Check radiator fins, fan belt, and coolant level |
| B@HANS | Hydraulic oil overheating | Contaminated hydraulic oil, clogged filter, or cooler fan failure | Change hydraulic filter and oil; check cooler fan operation |
| A570NX | Engine oil filter clogged | Clogged oil filter element or bypass valve issue | Replace filter element |
| AB00KE | Charging voltage too low | Faulty alternator or loose drive belt | Replace the alternator or tighten the belt |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
PC09-1A(S/N 10001-UP (KUC SPEC.)) attachments & work tools
Buckets
Available widths range from 305 mm (12 in) to 762 mm (30 in) for digging and ditching applications. Standard bucket capacity is 0.016 to 0.020 m³ (0.021 to 0.026 cu yd). Mounting is pin-on; quick coupler compatibility requires an aftermarket adapter.
Hydraulic hammers
Class 40 mm (1.57 in) breaker, such as the RAY RHB40, is the appropriate size class. Operating pressure is 90 to 120 kg/cm² (1280 to 1704 psi) with an oil flow requirement of 15 to 25 L/min (4 to 7 gpm).
Quick couplers
Compatible types include multi quick hitches, tilting quick hitches, and hydraulic quick hitches. Pin diameter requirements are 25 to 40 mm (0.98 to 1.57 in) with a center-to-center distance of 86 to 200 mm (3.39 to 7.87 in).
Thumbs/grapples
Hydraulic and mechanical thumbs are available in pin-on or weld-on configurations. Demolition grapples and log grapples are also supported, with operating pressures up to 250 bar (3626 psi) and flow rates of 6 to 13 L/min (2 to 3 gpm).
Rippers
Single-shank rippers are available for breaking compacted ground. The attachment is designed for pin-on mounting to the boom end.
Hydraulic-kit notes
The machine uses Komatsu TO hydraulic oil. Breaker and grapple attachments require medium-pressure circuits (up to 250 bar / 3626 psi) and flow rates between 6 and 25 L/min (2 to 7 gpm) depending on the tool.
All PC09-1A(S/N 10001-UP (KUC SPEC.)) assemblies by section
Every catalogued assembly group for the Komatsu PC09-1A(S/N 10001-UP (KUC SPEC.)). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
2d68e-N3cb Engine S/N N00101-Up
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Air Cleaner(#N00711-)
| YM***30 | Air Cleaner Ass'Y | 1 |
| YM***40 | Valve,Unloader | 1 |
| YM***30 | Cover Ass'Y | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Air Intake Manifold
| YM***82 | Bolt | 1 |
| YM***62 | Bolt Plated | 1 |
| YM***00 | Manifold,Air Intake | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Alternator (20a) (Inner Parts)(#N00711-)
| YM***00 | Stator Ass'Y | 1 |
| YM***02 | Alternator A. (20a) | 1 |
| YM***00 | Nut,Ball | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Alternator And Mounting (20a)(#N00711-)
| YM***40 | Screw | 1 |
| YM***00 | Plate,Adjust | 1 |
| YM***02 | Bolt | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Camshaft And Tappet
| YM***00 | Tappet | 4 |
| YM***50 | Retainer, Bearing | 1 |
| YM***80 | Camshaft Ass'Y | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Crankshaft
| YM***80 | Bolt | 1 |
| YM***41 | Washer | 1 |
| YM***00 | Crankshaft Ass'Y | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Cylinder Block
| YM***30 | Thrust Metal Ass'Y | 2 |
| YM***00 | Main Metal Ass'Y (Std) | 3 |
| YM***00 | Plug | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Cylinder Block Accsessory
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Cylinder Head
| YM***40 | Gasket (Kit) | 1 |
| YM***00 | Cotter | 8 |
| YM***00 | Plug | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Cylinder Head Cover(#N00711-)
| YM***00 | Pipe,Breather | 1 |
| YM***20 | Head Cover Ass'Y | 1 |
| YM***90 | Joint | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Drive Gear
| YM***22 | Retainer, Idle Gear | 1 |
| YM***02 | Nut | 1 |
| YM***00 | Ring, Snap | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Electrical Parts (Forwerded Individually Parts)(#N00711-)
| YM***10 | Relay,Stop Solenoid | 1 |
| YM***10 | Limiter,Current | 1 |
| YM***20 | Time Switch | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Exhaust Manifold(#N00711-)
| YM***10 | Gasket (Kit) | 1 |
| YM***00 | Manifold,Exhaust | 1 |
| YM***02 | Stud | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Flywheel And Flywheel Housing
| YM***20 | Bolt Plated | 3 |
| YM***01 | Housing,Flywheel | 1 |
| YM***20 | Parallel Pin | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Fornt Hanger(#N00711-)
| YM***00 | Hook,Front | 1 |
| YM***42 | Screw | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Front Cover Oil Pump(#N00711-)
| YM***22 | Housing Assembly., Gear | 1 |
| YM***40 | Cover | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Fuel Filter And Piping(#N00711-)
| YM***90 | Bolt Ass'Y | 1 |
| YM***00 | Fuel Feed Pump, Assembly | 1 |
| YM***10 | Filter,Fuel | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Fuel Filter(#N00711-)
| YM***40 | Lever | 1 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***50 | Cartridge | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Fuel Injection Pump (Inner Parts)
| YM***02 | Screw | 1 |
| YM***50 | Shim Ass'Y | 2 |
| YM***90 | Spring | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Fuel Injection Pump Mounting
| YM***12 | Pipe,Injection? No.1 | 1 |
| YM***21 | Pipe,Injection? No.2 | 1 |
| YM***50 | Shim Ass'Y (Kit) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Fuel Nozzle And Spill Hose
| YM***40 | Spacer, Valve Stop | 1 |
| YM***01 | Swivel Joint, Assembly | 1 |
| YM***00 | Fuel Injection Valve, Assembly | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Gasket Kit(#N00711-)
| YM***10 | Gasket (Kit) | 1 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***40 | Gasket (Kit) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Glow Plug
| YM***00 | Glow Plug | 2 |
| YM***20 | Connector | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Governor(#N00711-)
| YM***00 | Weight Ass'Y | 1 |
| YM***51 | Handle | 1 |
| YM***00 | Pin, Cotter | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Muffler(#N00711-)
| YM***10 | Muffler | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Oil Filter
| YM***50 | Nut | 1 |
| YM***10 | Stud | 1 |
| YM***50 | Cartridge,Engine Oil | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Oil Pan And Suction Tube
| YM***52 | Bolt Plated | 16 |
| YM***80 | Oil Pan Ass'Y | 1 |
| YM***02 | Bolt,Stop Lever | 3 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Piston And Connecting Rod
| YM***00 | Piston Ring Ass'Y | 1 |
| YM***10 | Bearing (--0.25 mm) | 1 |
| YM***80 | Piston Ass'Y | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Rear Hanger
| YM***00 | Hook,Rear | 1 |
| YM***22 | Screw | 4 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Rocker Arm(#N00711-)
| YM***30 | Screw,Adjusting | 2 |
| YM***50 | Rocker Arm Ass'Y,Intake | 2 |
| YM***40 | Shaft Ass'Y | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Starting Motor (0.8kw) (Inner Parts)
| YM***00 | Stopper Set | 1 |
| YM***40 | Cover Ass'Y | 1 |
| YM***50 | Brush (+) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Starting Motor And Mounting (0.8kw)
| YM***52 | Screw | 2 |
| (Y***0) | Starting Motor Ass'Y,(0.8kw) (See Fig.A6210-C0a1) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Suction Pipe
| YM***22 | Screw | 2 |
| YM***30 | O-Ring (Kit) | 1 |
| YM***80 | Pipe,Inlet | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Tool
| YM***60 | Wrench,Fuel Filter? Water Separator | 1 |
| YM***50 | Screw Driver | 1 |
| YM***51 | Wrench,(For Engine Oil Filter) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : 2d68e-N3cb Engine S/N N00101-Up : Water Pump And Cooling Fan(#N00711-)
| YM***31 | Cover | 1 |
| YM***00 | Water Pump Ass'Y | 1 |
| YM***40 | Plug | 1 |
Accessory
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Accessory : Cap And Overalls
| 09***50 | Overall,(Special Order) | 1 |
| 09***57 | Cap,(Special Order) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Accessory : Tool
| 07***50 | Pump, (Bellows Type) | 1 |
| 07***03 | Cartridge - Grease | 1 |
| 07***17 | Nozzle | 1 |
Cooling System
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Cooling System : Radiator And Piping (With Travel Alarm)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 2 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 12 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
Electrical System
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Electrical System : Battery And Wiring (For Kuc)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Electrical System : Electrical System (Instrument Panel)
| 01***16 | Bolt, Mounting Transmission Control Switch | 1 |
| 08***19 | Band - Tie Hose To Wire Harness | 1 |
| 08***00 | Switch, Starting - With Keys | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Electrical System : Electrical System (Main Harness And Related Parts) (With Travel Alarm)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***12 | Screw (Without Radio Or Stereo) (2) | 4 |
| 01***10 | Bolt - Relay And Flasher Mounting | 7 |
Engine Related Parts
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Engine Related Parts : Dumper
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 04***20 | Pin,Dowel (Welded) | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Engine Related Parts : Engine Mounting Parts (Air Cleaner And Muffler)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 6 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 8 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Engine Related Parts : Engine Mounting Parts (Bracket)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 14 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 8 |
Fuel Tank And Related Parts
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Fuel Tank And Related Parts : Fuel Tank (Fuel Piping)
| 01***65 | Capscrew | 1 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Fuel Tank And Related Parts : Fuel Tank (Tank And Related Parts)
| 01***30 | Screw | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 1 |
Guard
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Guard : Additional Weight
| 01***50 | Bolt,(Spark Arrester Spec.) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 21***12 | Weight | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Guard : Engine Hood (Hood) (With Seat Belt)
| 01***16 | Screw | 4 |
| 01***12 | Bolt,(With Speedometer) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Guard : Engine Hood (Related Parts) (With Seat Belt)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
Hydraulic System
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Actuator Line (Arm? Boom Cylinder Line) (With Hose Guard)
| 08***34 | Tie, Cable | 1 |
| 20***92 | Tube | 1 |
| 21***80 | Hose | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Actuator Line (Swing Motor Line)
| 21***20 | Hose | 1 |
| 21***30 | Hose | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Actuator Line (Swivel Joint? Boom Swing Cylinder Line) (Variable Gauge Spec.)
| 21***71 | Hose,Blade Head | 2 |
| 21***81 | Hose,Blade Bottom | 1 |
| 21***41 | Hose | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Attachment Line (Chassis Side) (For Attachment)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 02***06 | Hose | 1 |
| 02***11 | Elbow | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Delivery Line (With Hose Guard)
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Hydraulic Tank
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Main Pump (Connecting Parts)
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 02***09 | O-Ring,(F4350-61a0 -41 ) | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Return Line (For Attachment)
| 07***35 | Clamp | 2 |
| 20***00 | Filter Ass'Y | 1 |
| 20***10 | Head | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Hydraulic System : Suction Line
| 07***35 | Clamp | 2 |
| 21***11 | Hose | 1 |
Main/Revolving Frame And Related Parts
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Main/Revolving Frame And Related Parts : Boom Swing Cylinder (Tops)
| (7***1) | Cylinder Ass'Y,(See Fig.Y1620-51a1) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Main/Revolving Frame And Related Parts : Revolving Frame
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
| 07***35 | Seal,Dust (Kit) | 2 |
| 21***13 | Frame,Revolving | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Main/Revolving Frame And Related Parts : Revolving Frame Lubricating Line
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
| 21***11 | Nipple | 2 |
| 21***21 | Elbow | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Main/Revolving Frame And Related Parts : Swing Bracket
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
| 01***95 | Capscrew | 1 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
Marks And Plates
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Marks And Plates : Marks And Plates (English) (Variable Gauge Spec.) (Except Kue)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***03 | Plate? Safety,Caution From Flying Cyl. Plug | 2 |
| 09***01 | Plate? Operating,Work Equipment Control Lock Le | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Marks And Plates : Plate (Breaker Arm) (English) (Except Kue)
| 21***80 | Plate,Breaker Arm | 1 |
| 21***81 | Plate,Breaker Arm | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Marks And Plates : Plate (Lifting Capacity) (For Kuc)
| 21***50 | Plate,Std Arm With Tops | 1 |
| 21***51 | Plate,Std Arm With Tops | 1 |
| 21***60 | Plate,Long Arm With Tops | 1 |
Operator'S Compartment And Control System
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Attachment Control Pedal
| 01***20 | Bolt,(Without Air Con. Or Heater) | 2 |
| 01***25 | Capscrew | 2 |
| 01***25 | Bolt,(Rear Attachment Less) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Canopy (Tops)
| 01***40 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 21***11 | Canopy | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Floor Mat (For Attachment) (Tops)
| 21***40 | Floor Mat | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Floor Mat (Tops)
| 21***30 | Floor Mat | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Floor Plate And Swing Lock Pin
| 01***16 | Bolt - Starting Motor Ground Cable | 4 |
| 04***12 | Pin,Cotter(W/Vandalism Protection) | 1 |
| 04***20 | Pin | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Handrail (With Tops Canopy)
| 01***16 | Bolt, Mount Solenoid Valve | 4 |
| 21***20 | Bracket,L.H | 1 |
| 21***30 | Bracket,R.H | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control (Lever Stand And Fuel Control Cable) (Variable Gauge Spec.)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***25 | Screw | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control (Main Valve Connecting Parts) (Variable Gauge Spec.)
| 02***08 | O-Ring (Kit) | 8 |
| 02***09 | O-Ring,(F4350-61a0 -41 ) | 6 |
| 07***11 | O-Ring,(Tm8202-009) | 19 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (2nd Speed Change Pedal And Variable Gauge Lever) (Variable Gauge Spec.)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***25 | Bolt,(Rear Attachment Less) | 1 |
| 01***03 | Nut, L. H. Thread | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (Blade)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 1 |
| 01***25 | Capscrew | 3 |
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (Boom And Bucket)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 3 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***03 | Nut, L. H. Thread | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (Boom Swing Control Pedal)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***16 | Screw | 2 |
| 01***03 | Nut, L. H. Thread | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (Bracket And Travel) (With Travel Alarm)
| 01***25 | Bolt,(Rear Attachment Less) | 3 |
| 01***16 | Bolt | 4 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (Fuel Control)
| 01***35 | Bolt, Stopper | 1 |
| 01***12 | Screw | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (Lock Lever)
| 01***20 | Bolt,See Fig. K4010-11a0 | 2 |
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 2 |
| 04***24 | Pin, Spring | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (Main Valve) (Variable Gauge Spec.)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
| (2***1) | Valve Ass'Y,(See Fig.Y1661-01a0) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Main Control Lever (Swing And Arm)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 2 |
| 01***03 | Nut, L. H. Thread | 2 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Operator'S Seat (Slide Type)
| 01***25 | Bolt,(Rear Attachment Less) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 6 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Operator'S Compartment And Control System : Seat Belt (3 Inches)
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
| 20***12 | Seat Belt Ass'Y | 1 |
| 21***20 | Collar | 2 |
Service Kit And Component Parts
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Arm Cylinder (Inner Parts)
| 02***08 | O-Ring (Kit) | 2 |
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
| 07***48 | O-Ring, (Without Emergency Steering) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Blade Cylinder (Inner Parts)
| 02***08 | O-Ring (Kit) | 2 |
| 07***48 | O-Ring,(F4350-64a0 -21 ) | 1 |
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Boom Cylinder (Inner Parts)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
| 02***08 | O-Ring (Kit) | 3 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Breaker (Inner Parts)
| 21***10 | Cap | 1 |
| 21***20 | Bolt,Cap | 1 |
| 21***30 | Washer,Seal | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Bucket Cylinder (Inner Parts)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
| 02***08 | O-Ring (Kit) | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Control Valve (10-Spool) (1/6) (Inner Parts) (Variable Gauge Spec.)
| 21***01 | Valve Ass'Y | 1 |
| NA***10 | O-Ring | 1 |
| NA***30 | Bolt,L=288mm | 3 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Control Valve (10-Spool) (2/6) (Inner Parts) (Variable Gauge Spec.)
| NA***64 | Screw | 2 |
| NA***10 | O-Ring | 1 |
| NA***00 | Ring,Back Up | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Control Valve (10-Spool) (3/6) (Inner Parts) (Variable Gauge Spec.)
| NA***64 | Screw | 4 |
| NA***01 | Valve Ass'Y,Swing | 1 |
| NA***10 | O-Ring | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Control Valve (10-Spool) (4/6) (Inner Parts) (Variable Gauge Spec.)
| NA***64 | Screw | 4 |
| NA***10 | O-Ring | 2 |
| NA***00 | Ring,Back Up | 4 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Control Valve (10-Spool) (5/6) (Inner Parts) (Variable Gauge Spec.)
| NA***64 | Screw | 4 |
| NA***10 | O-Ring | 2 |
| NA***00 | Ring,Back Up | 4 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Control Valve (10-Spool) (6/6) (Inner Parts) (Variable Gauge Spec.)
| NA***64 | Screw | 6 |
| NA***10 | O-Ring | 3 |
| NA***01 | Spool Ass'Y,Boom | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Hydraulic Pump (1/2) (Inner Parts)
| 04***15 | Ring, Snap | 1 |
| 70***10 | Shaft Seal | 1 |
| 70***70 | Plate | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Hydraulic Pump (2/2) (Inner Parts)
| (7***0) | Pump Ass'Y,(See Fig.Y1600-01a0) | 1 |
| (****0) | Seal,Ring | 1 |
| (****0) | Bushing,Plane (Driven Side) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Swing Cylinder (Inner Parts)
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
| 07***48 | O-Ring, (Without Emergency Steering) | 1 |
| 07***25 | Bushing | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Swing Cylinder (Inner Parts) (Tops Canopy)
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
| 07***48 | O-Ring, (Without Emergency Steering) | 1 |
| 07***25 | Bushing | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Swing Motor (Inner Parts)
| 20***00 | Motor Ass'Y | 1 |
| 20***30 | Spacer | 1 |
| 20***40 | Geroler Ass'Y | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Swivel Joint (Inner Parts) (Variable Gauge Spec.)
| 01***16 | Bolt (Op) | 4 |
| 04***18 | Ring,Snap (With Emergency Steering) | 1 |
| 70***50 | Swivel Joint Ass'Y | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Travel Motor (1/3) (Inner Parts)
| 22***02 | Travel Motor Ass'Y | 2 |
| FU***37 | Ring,Snap (K-1) | 6 |
| FU***21 | Washer,Thrust (K-1) | 6 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Travel Motor (2/3) (Inner Parts)
| FU***87 | Plug (K-4) | 1 |
| FU***32 | Ball | 2 |
| FU***90 | O-Ring (K-6) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Travel Motor (3/3) (Inner Parts)
| FU***36 | Service Kit,Hydraulic Motor | 1 |
| FU***36 | Service Kit,Body 1 | 1 |
| FU***27 | Plug | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Service Kit And Component Parts : Variable Gauge Cylinder (Inner Parts)
| 07***40 | O-Ring, Divider Valve Mounting | 1 |
| 07***37 | Ring,Snap | 1 |
| 20***60 | Bushing | 2 |
Swing Circle And Related Parts
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Swing Circle And Related Parts : Swing Circle
| 01***35 | Bolt,(F4320-52a0 -5 ) | 9 |
| 01***45 | Bolt,(With Water Separator Type) | 12 |
| 01***50 | Bolt,(Spark Arrester Spec.) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Swing Circle And Related Parts : Swing Machinery And Motor Mounting
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***30 | Screw | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Swing Circle And Related Parts : Swivel Joint (Connecting Parts) (Variable Gauge Spec.)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
Travel And Lower Piping
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Travel And Lower Piping : Lower Piping (Travel Motor? Gauge Cylinder Line) (Variable Gauge Spec.)
| 21***11 | Hose | 4 |
| 21***21 | Hose | 1 |
| 21***31 | Hose | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Travel And Lower Piping : Sprocket
| 01***20 | Bolt, Adapter Mounting | 18 |
| 21***10 | Sprocket | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Travel And Lower Piping : Travel Motor Mounting
| 01***20 | Screw | 16 |
| 02***09 | O-Ring,(F4350-61a0 -41 ) | 4 |
| 07***08 | O-Ring,(Tm8202-005) | 2 |
Under Carriage
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Under Carriage : Front Idler
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***25 | Bolt | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Under Carriage : Track Frame (Variable Gauge Spec.)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 8 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***13 | Nut,(For Adjustable Rod) | 8 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Under Carriage : Track Frame Cover (Variable Gauge Spec.)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***12 | Bolt,(With Speedometer) | 2 |
| 01***80 | Screw | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Under Carriage : Track Roller
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 04***12 | Ring, Snap (4) | 2 |
| 06***05 | Bearing | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Under Carriage : Track Shoe (Rubber Shoe)
| 21***11 | Rubber Shoe | 2 |
Work Equipment
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Arm (With Hose Guard)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Arm Cylinder
| (7***0) | Cylinder Ass'Y,(See Fig.Y1620-11a0) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Attachment Line (Attachment Side) (For Attachment) (With Hose Guard)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Blade (Variable Gauge Spec.)
| 01***20 | Bolt,(For Mono Lever Steering) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 20***20 | Bushing | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Blade Cylinder
| (7***0) | Cylinder Ass'Y,(See Fig.Y1621-01a0) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Boom (For Attachment)
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***16 | Bolt, Mount Solenoid Valve | 1 |
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Boom Cylinder
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Breaker Accessary (Wide Chisel)
| 21***20 | Chisel,Wide X-X | 1 |
| 21***30 | Chisel,Wide Y-Y | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Breaker Arm (With Hose Guard)
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***50 | Capscrew - M20 X 2.50 | 2 |
| 01***60 | Screw | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Breaker Arm Line (Breaker Arm Spec.) (With Hose Guard)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket (0.016m3) Width 250mm
| 20***20 | Tooth (Welded) | 2 |
| 20***20 | Edge (Welded) | 1 |
| 21***60 | Edge,Side (Welded) | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket (0.016m3) Width 250mm (Breaker Arm Spec.)
| 20***20 | Tooth (Welded) | 2 |
| 20***20 | Edge (Welded) | 1 |
| 21***60 | Edge,Side (Welded) | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket (0.022m3) Width 350mm
| 21***60 | Edge,Side (Welded) | 2 |
| 21***11 | Bucket | 1 |
| 21***12 | Bucket | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket (0.022m3) Width 350mm (Breaker Arm Spec.)
| 21***60 | Edge,Side (Welded) | 2 |
| 21***20 | Tooth Ass'Y (Welded) | 1 |
| 21***11 | Bucket | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket (0.025m3) Width 400mm
| 20***20 | Tooth (Welded) | 4 |
| 20***20 | Edge (Welded) | 1 |
| 21***60 | Edge,Side (Welded) | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket Cylinder
| (7***0) | Cylinder Ass'Y,(See Fig.Y1620-41a0) | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket Link
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket Link (Breaker Arm Spec.)
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket Pin
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Bucket Quick Coupler
| 07***25 | O-Ring,Corrosion Resistor | 1 |
| 21***20 | Pin | 3 |
| 21***30 | Spacer | 1 |
Komatsu : Pc09-1a(S/N 10001-Up (Kuc Spec.)) : Work Equipment : Long Arm (With Hose Guard)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
PC09-1A(S/N 10001-UP (KUC SPEC.)) serial number reference
Locate the riveted serial plate on the right-hand side of the cab lower frame, typically behind the front idler or beneath the operator's window. Read the first three characters (e.g., PC0) to identify the model family, followed by the dash-number and suffix to determine the specific generation and configuration variant.
| Prefix | Identifies | Notes |
|---|---|---|
| PC09-1 | Base model / Standard undercarriage | Identified in factory parts catalog listings as the primary serial range for this family. S/N 10001-UP. |
| PC09-1-A | Variant / Configuration A | Listed in factory parts catalog alongside the base model. S/N 10001-UP. Verify specific configuration with dealer. |
Frequently asked questions
What engine does the PC09-1 use?
The PC09-1 uses the Komatsu 2D68E-N3C or 2D70E-5SBA engine, producing 6.8 kW (9.1 HP).
What is the operating weight?
The operating weight ranges from 880 to 1,080 kg (1,940 to 2,381 lb) depending on configuration.
What replaced the PC09-1?
The PC09-1 was succeeded by the PC09-1B series in Komatsu's mini-excavator lineup.
What PC09-1A(S/N 10001-UP (KUC SPEC.)) owners discuss
What engine powers the PC09-1A, and what are the common power loss symptoms?
The PC09-1A uses the Komatsu 2D68E-3A engine (6.8 kW / 9.1 HP @ 2200 rpm) or the 2D70E engine (34.7 cu in displacement). Common power loss symptoms include engine RPM dropping under hydraulic load, increased fuel usage, and overheating. These issues often stem from restricted airflow, clogged fuel filters, or failing fuel delivery components rather than internal engine failure. Verify engine speed under load to distinguish between hydraulic drag and engine power loss. Have your dealer verify the specific engine model installed on your serial number range. Have your dealer verify the specific engine model installed on your serial number range.
How does the hydraulic system behave when the machine is cold versus hot?
The PC09-1 features a smooth, shock-free hydraulic system. A common diagnostic pattern is that functions work normally when cold but become weak or sluggish when the hydraulic oil warms up. This indicates excessive internal leakage in the hydraulic pump, main control valve, or cylinders that becomes more noticeable as oil viscosity decreases. Check hydraulic oil level, condition, and temperature before assuming pump failure.
What are the typical undercarriage and wear patterns for this machine?
The PC09-1A features a variable width undercarriage (180 mm / 225 mm) operated hydraulically from the cab. Typical wear patterns include track loosening due to improper tensioning and undercarriage component wear from operating in abrasive conditions. The machine is designed for tight spaces, so track width adjustment is a frequent operational feature. Inspect track tension and roller condition regularly.
What are the common electrical and sensor issues reported?
The PC09-1A relies on electronic control systems where a single faulty sensor or unstable power supply can trigger multiple warning signals. Common issues include intermittent starting, dashboard failure, and random shutdowns. Check battery state of charge, engine and chassis grounds, and main starter cable. Inspect wiring harness connectors for water ingress and short circuits between pins.
What should you check when buying a used PC09-1A?
When buying a used PC09-1A, verify the exact serial number to confirm the engine model (2D68E-3A or 2D70E) and configuration. Check the hydraulic oil condition and temperature behavior (cold vs. hot performance). Inspect the variable width undercarriage mechanism for proper operation. Test all hydraulic functions for smoothness and power. Check for fault codes and dashboard functionality. Verify the fuel system for air leaks and filter condition.
How does the PC09-1A handle cooling system issues?
The PC09-1A cooling system includes a radiator, hydraulic oil cooler, and charge-air cooler. Common issues arise from debris packed between heat exchangers, leading to overheating during heavy work. Check coolant level when cold and fan operation. If temperature rises during heavy work but falls at idle, cooling capacity may be marginal.
What are the maintenance intervals and fluid specifications?
The PC09-1A requires regular maintenance of hydraulic oil, engine oil, and coolant. Hydraulic oil tank capacity is 16.4 liters. Engine oil capacity is 0.5 liters. Coolant system fluid capacity is 0.6 liters. Fuel capacity is 3 gallons (11.4 liters). Use Komatsu-approved hydraulic oil and engine oil specifications. Check hydraulic filters and fuel filters regularly.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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