Komatsuhydraulic excavatorsmall ( - pc90)
Komatsu PC05-6(S/N 5001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC05-6 (S/N 5001-up) is a micro/mini hydraulic excavator in the roughly 1.23 t (1,230 kg) class, built from about 1987 to 1994. It runs a Komatsu 3D72-2 series engine — documented as 3D72-2B on the factory spec sheet and as 3D72-2FC/3D72-2GC in parts records — a Yanmar-built, water-cooled, naturally aspirated 3-cylinder mechanical diesel rated at roughly 9.6 kW gross, with no electronic engine controls. Komatsu offered it with a swing (offset) boom, a rear backfill blade, and 230mm rubber tracks under a canopy or ROPS cab. It sits in a numeric-serial PC05 lineage: the PC05-1 (1984-1988) came first, the PC05-5 (1988-1995) ran in parallel as a lighter sibling, and the PC05-7 followed from the late 1980s through the 1990s, split across two separate serial blocks.
Across the PC05 family the differences are mostly weight class and engine tuning rather than a clean generational redesign. The PC05-6 sits above the PC05-1 and PC05-5 in operating weight, while the PC05-7 that followed grew further and split into two distinct serial ranges with their own parts records. A related PC05-6F variant swapped in a Perkins engine on a separate serial block, so engine identity has to be confirmed against the exact serial range rather than assumed from a sibling. In today's used and parts market the PC05-6 is valued for being fully mechanical, with no fault codes or diagnostics to fail, which keeps it simple to troubleshoot in the field. Its age also means several details, like exact fluid capacities, aren't documented in accessible sources and should be checked against the shop manual or a dealer before service.
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 PC05-6(S/N 5001-UP) specifications
Engine
| Model | Komatsu 3D72-2 series diesel (recorded as 3D72-2B on the factory spec sheet for this range; parts records for the S/N 5001-UP run also reference 3D72-2FC/3D72-2GC electrical variants of the same base engine) |
| Gross power | Approx. 9.6 kW (12.9 hp) — figure from a single spec source only, confirm with dealer before quoting |
| Displacement | 0.879 L |
| Cylinders | 3, bore x stroke 72 x 72 mm |
| Emissions tier | Pre-emissions-regulation production era (built 1987-1994); no EPA/EU tier applies |
Weights
| Operating weight | 1.23 t (1,230 kg / 2,712 lb) — single standard configuration, no long-undercarriage variant documented |
| Ground pressure | Not documented for this exact serial range — verify with dealer |
| Transport weight | Not documented separately from operating weight |
Dimensions
| Transport length | 3.495 m (11 ft 6 in) |
| Transport width | 0.96 m (3 ft 2 in) |
| Transport height | 1.135 m (3 ft 9 in) |
| Track shoe width | 230 mm (9.1 in), rubber track |
| Tail swing radius | Not documented for this exact serial range — verify with dealer |
| Ground clearance | Not documented for this exact serial range — verify with dealer |
| Undercarriage length | Not documented for this exact serial range — verify with dealer |
Performance
| Max dig depth | 2.18 m (7 ft 2 in) |
| Max reach at ground level | 3.685 m (12 ft 1 in) |
| Max dump height | Not documented for this exact serial range — verify with dealer |
| Max cutting height | Not documented for this exact serial range — verify with dealer |
| Swing speed | Not documented for this exact serial range — verify with dealer |
| Travel speed | Not documented for this exact serial range — verify with dealer |
| Gradeability | Not documented for this exact serial range — verify with dealer |
| Drawbar pull | Not documented for this exact serial range — verify with dealer |
Forces
| Bucket digging (breakout) force | 10.5 kN (2,361 lbf) |
| Stick/arm digging force | Not documented separately for this model — factory sheet lists only the single bucket breakout figure above |
Service capacities (summary)
| Fuel tank | Not documented for this exact serial range — verify with dealer |
| Hydraulic system/tank | Not documented for this exact serial range — verify with dealer |
| Engine oil | Not documented for this exact serial range — verify with dealer |
| Cooling system | Not documented for this exact serial range — verify with dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC05-6(S/N 5001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not published in accessible service literature for S/N 5001-UP; refill volume not confirmed for this exact serial range — verify with the OMM or a Komatsu dealer. | Komatsu genuine diesel engine oil (EO), API CD/CE class. Grade by ambient temperature per the standard Komatsu chart: SAE 10W below freezing, SAE 30 in warm climates, SAE 10W-30 or 15W-40 as an all-season choice. Engine is the Yanmar-built Komatsu 3D72-2 series 3-cylinder diesel (3D72-2F tied to this serial block); do not substitute PC05-6F (Perkins-powered, F-prefix serials) oil grades. |
| Cooling system | Not published for this serial range in available sources — the machine is water-cooled with a small radiator, but the exact fill volume is not confirmed. | Komatsu genuine ethylene-glycol permanent-type antifreeze/coolant, mixed to local climate (typically 30-50% concentration for freeze protection). |
| Fuel tank | Not published for this serial range in accessible sources. | Automotive diesel fuel meeting ASTM D975 / JIS K2204. Use a lower-cloud-point (winter grade) fuel in cold climates. |
| Hydraulic system total and hydraulic tank | Not published for this serial range in accessible sources. | Komatsu genuine hydraulic oil (HO), ISO VG32 in cold climates and ISO VG46 in warm climates, per the standard Komatsu viscosity-by-temperature guidance used across the compact excavator line. |
| Final drive / travel motor (each) | Not published for this serial range in accessible sources. | Komatsu genuine gear oil (AXO) or single-grade engine oil, per the small-excavator practice on this size class; confirm the exact spec against the OMM before servicing. |
| Swing drive | Not confirmed as a separately serviced fill point for this 1.2 t-class machine — swing drive lubrication details are not documented in the sources reviewed. | Not documented for this exact serial range; verify with the OMM or a Komatsu dealer before servicing. |
| Grease (pins, bushings, boom/arm/bucket linkage) | Spec only — no fill volume applicable. | Komatsu genuine multipurpose lithium-based EP grease (G2-LI), applied at all pin and bushing grease points per the lubrication chart interval. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC05-6(S/N 5001-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the PC05-6(S/N 5001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
The PC05-6's mechanical 3D72-2 diesel and manual hydraulic circuit carry no ECM or fault-code display, so early-warning data has to come from the fluids themselves. Pull engine oil and hydraulic oil samples at each drain and watch for metal fines, which flag injection pump, cylinder, or pump/valve wear before it becomes a failure. Track coolant condition and fuel filter sediment by eye at each service, since there's no dash alert to catch contamination first on this generation.
Corrective & Common Repairs
Most PC05-6 repairs trace to age rather than hours: perished or cracked 230mm rubber tracks, worn boom-swing and bucket pins from decades of grease cycles, and injection pump wear on the 3D72-2 showing up as hard starting or smoking. Fuel system fouling from stale diesel is common on units that sat idle. Because the machine predates diagnostic electronics, troubleshooting runs through the shop manual's wiring diagrams and symptom checks, not fault codes — budget extra diagnostic time versus a modern mini excavator.
Overhaul & Rebuild Points
On a PC05-6 this old, overhaul candidates are the swing circle and gear teeth, the travel (final drive) reduction cases, and the hydraulic pump and main control valve, all of which wear from decades of duty rather than one fault. Rebuilding the 3D72-2's bottom end is worthwhile only if the block and crank check out, since parts support for this Yanmar-built engine is thinning with age. Confirm undocumented fluid capacities against the shop manual or dealer before ordering rebuild kits.
Seasonal & Environment Servicing
Cold starts are the main seasonal risk for the naturally aspirated 3D72-2 — use correct winter-grade diesel and keep the battery in good condition, since there's no glow-plug/ECM assist to compensate for thick fuel or a weak charge. In wet or muddy conditions, flush and re-grease the boom, arm, and swing pins more often than the standard interval, and rinse the rubber tracks and undercarriage so packed debris doesn't accelerate track and roller wear on this small a machine.
PC05-6(S/N 5001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| YM102103-55520 | O-Ring,(For Fuel Filter) | Fuel system service | Check fitment → |
| (YM171051-92760) | Wrench,Fuel Filter? Water Separator | Fuel system service | Check fitment → |
| YM119640-55600 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 20S-98-12120 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| 20S-98-29340 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC05-6(S/N 5001-UP) attachments & work tools
Buckets
Digging buckets for this micro class run roughly 150-600mm (6-24in) wide, plus a 900mm (36in) grading bucket, all pin-on (no quick-coupler mounting on this size). Rated bucket capacity varies by width; published capacity figures for this model are inconsistent with its 1.2-1.3t class and should be verified against the parts book rather than taken at face value.
Hydraulic hammers
This weight class (about 0.8-2.5t) matches a small breaker package running roughly 15-25 l/min oil flow at 90-120 bar, with impact energy around 200J and breaker unit weight near 100kg. Breaker plumbs into the standard arm circuit; no separate high-flow circuit is documented for this model.
Quick couplers
Mechanical pin-grabber (manual) couplers sized for the 0.75-3t class are commonly fitted to machines in this range, with coupler pin diameters typically in the 25-35mm band depending on supplier. Exact factory pin diameter for this machine is not confirmed in available documentation - verify with a dealer or the parts book before ordering a coupler.
Thumbs/grapples
No factory or aftermarket thumb/grapple kit specific to this micro excavator is documented. Mechanical thumb kits are commonly offered for larger Komatsu excavator classes (200-size and up), but nothing verified ties a thumb or grapple option to this machine.
Rippers
No ripper attachment, factory or aftermarket, is documented for this machine. Its micro-excavator size class is not a typical fit for ripper tooling.
Hydraulic-kit notes
No auxiliary or high-flow hydraulic circuit is documented for this machine beyond its standard single-circuit arm/bucket hydraulics. Breaker packages sized for this class run on the standard circuit flow/pressure noted above rather than a dedicated auxiliary line.
All PC05-6(S/N 5001-UP) assemblies by section
Every catalogued assembly group for the Komatsu PC05-6(S/N 5001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
3d72-2f Engine S/N 02519-Up
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Air Cleaner
| YM***10 | Cap | 1 |
| YM***11 | Air Cleaner Ass'Y | 1 |
| YM***00 | Valve | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Air Intake Manifold And Glow Plug
| YM***20 | Wire,Glow Plug | 1 |
| YM***62 | Bolt Plated | 2 |
| YM***01 | Manifold,Air Intake | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Alternator
| YM***01 | Alternator A. (20a) | 1 |
| YM***00 | Stator Ass'Y | 1 |
| YM***10 | Bearing,Ball | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Alternator And Mounting
| YM***02 | Screw | 1 |
| YM***62 | Bolt,(For Shipping) | 1 |
| YM***52 | Screw | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Camshaft And Tappet
| YM***00 | Gear,Camshaft | 1 |
| YM***00 | Rod,Push | 6 |
| YM***50 | Retainer, Bearing | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Crankshaft
| YM***80 | Bolt | 1 |
| YM***41 | Washer | 1 |
| YM***20 | Wrench | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Cylinder Block
| YM***20 | Plug,Drain(Without Oil Cooler Type) | 1 |
| YM***00 | Main Metal Ass'Y (Std) | 4 |
| YM***00 | Plug | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Cylinder Head
| YM***80 | Retainer, Spring | 6 |
| YM***00 | Bolt,Head | 14 |
| YM***10 | Insert | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Cylinder Head Cover
| YM***00 | Pipe,Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***30 | Gasket | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Exhaust Manifold And Muffler(#02519-03752)
| YM***50 | Pipe | 1 |
| YM***62 | Bolt | 2 |
| YM***50 | Stay | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Flywheel And Flywheel Housing(#02519-03752)
| YM***20 | Bolt Plated | 3 |
| YM***52 | Cover,Rear | 1 |
| YM***90 | Flywheel Ass'Y | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Fuel Feed Pump(#02519-03752)
| YM***21 | Feed Pump Ass'Y | 1 |
| YM***02 | Screw | 2 |
| YM***50 | Packing | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Fuel Filter(#02519-03752)
| YM***10 | Body | 1 |
| YM***20 | Spring | 1 |
| YM***20 | O-Ring,(For Fuel Filter) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Fuel Injection Pump
| YM***00 | Valve W/Seat, Deliv | 3 |
| YM***00 | Washer,Spring | 2 |
| YM***00 | Washer | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Fuel Injection Pump And Piping(#02519-03752)
| YM***20 | Retainer, Pipe | 1 |
| YM***21 | Pipe,Injection? No.2 | 1 |
| YM***50 | Shim Ass'Y | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Fuel Nozzle And Spill Pipe
| YM***40 | Spacer, Valve Stop | 1 |
| YM***00 | Sleeve | 1 |
| YM***80 | Nut | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Gasket Kit
| YM***40 | O-Ring,Drain Plug | 1 |
| YM***40 | Gasket,Head (Kit) | 1 |
| YM***10 | Gasket,Exhaust Manifold (Kit) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Gear Case And Front Cover(#02519-03752)
| YM***22 | Retainer, Idle Gear | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***92 | Case,Gear | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Governor Control(#02519-03752)
| YM***50 | Nut,Lock | 1 |
| YM***00 | Pin, Cotter | 1 |
| YM***00 | Bracket | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Lubricating Oil Filter
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Lubricating Oil Pump
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***91 | Pipe,Oil Inlet | 1 |
| YM***20 | O-Ring,Cylinder Head Cover Bolt | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Oil Pan
| YM***52 | Bolt Plated | 20 |
| YM***40 | O-Ring,Drain Plug | 1 |
| YM***12 | Liquid Gasket | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Piston And Connecting Rod
| YM***10 | Crank Pin Metal A.,0.25mm (Us) | 1 |
| YM***00 | Piston Ring Ass'Y | 1 |
| YM***00 | Connecting Rod, Assembly | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Rocker Arm
| YM***30 | Screw,Adjusting | 2 |
| YM***62 | Screw | 1 |
| YM***02 | Nut | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Safety Relay Glow Plug Timer(#02519-03752)
| (Y***1) | Relay,Safety (Not Shown) | 1 |
| (Y***1) | Indicator, Charging | 1 |
| (Y***0) | Relay, Pre-Heating Timer | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Starting Motor
| YM***01 | Washer,Spring | 1 |
| YM***20 | Cover | 1 |
| YM***51 | Nut | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Starting Motor And Mounting
| YM***52 | Bolt Plated | 2 |
| (Y***1) | Starting Motor Ass'Y,(See Fig.A6210-B0a1) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Tool
| (Y***0) | Wrench,Oil Filter | 1 |
| (Y***0) | Tool Ass'Y | 1 |
| (Y***0) | Driver,Screw | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2f Engine S/N 02519-Up : Water Pump And Cooling Fan
3d72-2g Engine S/N 02519-Up
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Air Cleaner
| YM***10 | Cap | 1 |
| YM***11 | Air Cleaner Ass'Y | 1 |
| YM***00 | Valve | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Air Intake Manifold And Glow Plug
| YM***20 | Wire,Glow Plug | 1 |
| YM***62 | Bolt Plated | 2 |
| YM***01 | Manifold,Air Intake | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Alternator
| YM***01 | Alternator A. (20a) | 1 |
| YM***00 | Stator Ass'Y | 1 |
| YM***10 | Bearing,Ball | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Alternator And Mounting
| YM***02 | Screw | 1 |
| YM***62 | Bolt,(For Shipping) | 1 |
| YM***52 | Screw | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Camshaft And Tappet
| YM***00 | Gear,Camshaft | 1 |
| YM***00 | Rod,Push | 6 |
| YM***50 | Retainer, Bearing | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Crankshaft
| YM***80 | Bolt | 1 |
| YM***41 | Washer | 1 |
| YM***20 | Wrench | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Cylinder Block
| YM***20 | Plug,Drain(Without Oil Cooler Type) | 1 |
| YM***00 | Main Metal Ass'Y (Std) | 4 |
| YM***00 | Plug | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Cylinder Head
| YM***80 | Retainer, Spring | 6 |
| YM***00 | Bolt,Head | 14 |
| YM***10 | Insert | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Cylinder Head Cover
| YM***00 | Pipe,Breather | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***30 | Gasket | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Engine Stop Motor(#03753-)
| YM***80 | Ring,Snap | 1 |
| YM***00 | Pin,Cotter | 1 |
| YM***20 | Spring | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Exhaust Manifold And Muffler(#03753-)
| YM***50 | Pipe | 1 |
| YM***62 | Bolt | 2 |
| YM***50 | Stay | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Flywheel And Flywheel Housing(#03753-)
| YM***20 | Bolt Plated | 3 |
| YM***90 | Flywheel Ass'Y | 1 |
| YM***20 | Parallel Pin | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Fuel Filter(#03753-)
| YM***00 | O-Ring (Kit) | 1 |
| YM***20 | Spring | 1 |
| YM***41 | Handle, Cock | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Fuel Injection Pump
| YM***00 | Valve W/Seat, Deliv | 3 |
| YM***00 | Washer,Spring | 2 |
| YM***00 | Washer | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Fuel Injection Pump And Piping(#03753-)
| YM***20 | Retainer, Pipe | 1 |
| YM***21 | Pipe,Injection? No.2 | 1 |
| YM***50 | Shim Ass'Y | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Fuel Nozzle And Spill Pipe
| YM***40 | Spacer, Valve Stop | 1 |
| YM***00 | Sleeve | 1 |
| YM***80 | Nut | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Gasket Kit
| YM***40 | O-Ring,Drain Plug | 1 |
| YM***40 | Gasket,Head (Kit) | 1 |
| YM***10 | Gasket,Exhaust Manifold (Kit) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Gear Case And Front Cover(#03753-)
| YM***22 | Retainer, Idle Gear | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***92 | Case,Gear | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Governor Control(#03753-)
| YM***50 | Nut,Lock | 1 |
| YM***00 | Pin, Cotter | 1 |
| YM***00 | Retainer, Shaft | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Lubricating Oil Filter
| YM***50 | Nut | 1 |
| YM***02 | Bolt Plated | 3 |
| YM***50 | Cartridge | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Lubricating Oil Pump
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***91 | Pipe,Oil Inlet | 1 |
| YM***20 | O-Ring,Cylinder Head Cover Bolt | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Oil Pan
| YM***52 | Bolt Plated | 20 |
| YM***40 | O-Ring,Drain Plug | 1 |
| YM***12 | Liquid Gasket | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Piston And Connecting Rod
| YM***10 | Crank Pin Metal A.,0.25mm (Us) | 1 |
| YM***00 | Piston Ring Ass'Y | 1 |
| YM***00 | Connecting Rod, Assembly | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Rocker Arm
| YM***30 | Screw,Adjusting | 2 |
| YM***62 | Screw | 1 |
| YM***02 | Nut | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Safety Relay Glow Plug Timer(#03753-)
| (Y***0) | Feed Pump Ass'Y,Fuel | 1 |
| (Y***1) | Relay,Safety (Not Shown) | 2 |
| (Y***1) | Indicator, Charging | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Starting Motor
| YM***01 | Washer,Spring | 1 |
| YM***20 | Cover | 1 |
| YM***51 | Nut | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Starting Motor And Mounting
| YM***52 | Bolt Plated | 2 |
| (Y***1) | Starting Motor Ass'Y,(See Fig.A6210-B0a1) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Tool
| (Y***0) | Wrench,Oil Filter | 1 |
| (Y***0) | Tool Ass'Y | 1 |
| (Y***0) | Driver,Screw | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Water Pump And Cooling Fan
| YM***20 | O-Ring | 1 |
| YM***02 | Bolt Plated | 2 |
| YM***40 | Packing | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : 3d72-2g Engine S/N 02519-Up : Water Separator(#03753-)
| YM***00 | Gasket | 2 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***50 | Plug,Air | 2 |
Control System And Revolving Frame
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Arm Control Lever(#5001-5611)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Arm Control Lever(#5612-)
| 01***25 | Bolt,Without Revolution Sensor | 6 |
| 01***30 | Bolt,Stopper | 1 |
| 01***50 | Screw | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Attachment Control Pedal (Except Japan)(#6006-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***25 | Bolt,Without Revolution Sensor | 1 |
| 01***30 | Bolt,Stopper | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Blade Control Lever(#5001-5611)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***30 | Screw | 1 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Blade Control Lever(#5612-)
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
| 01***06 | Nut,L.H. Thread (For Russian) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Boom And Bucket Control Lever(#5001-5611)
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Boom And Bucket Control Lever(#5612-)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Boom Swing Control Lever(#5001-5611)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Boom Swing Control Lever(#5612-6005)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Boom Swing Control Lever(#6006-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Fuel Control Lever
| 01***35 | Bolt, Stopper | 2 |
| 01***50 | Bolt | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Revolving Frame(#5001-6005)
| 01***55 | Bolt,(10m) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***40 | Bolt,(With Service Valve R.H.) | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Revolving Frame(#6006-)
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***55 | Bolt,(10m) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Stopper Lever(#5001-5611)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Screw | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Stopper Lever(#5612-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Screw | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Swing Control Lever(#5001-5611)
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 01***32 | Washer | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Swing Control Lever(#5612-)
| 01***05 | Nut,L.H. (For Trimming Dozer) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
| 01***26 | Washer,Spring | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Travel Control Lever(#5001-5611)
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Travel Control Lever(#5612-6005)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Control System And Revolving Frame : Travel Control Lever(#6006-)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
| 01***05 | Nut,L.H. (For Trimming Dozer) | 2 |
Engine Related Parts And Electrical System
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Battery
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 2 |
| 08***00 | Terminal? (+),(10l) (Not Shown) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Instrument Panel Line)(#5001-5320)
| 01***10 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***25 | Bolt,(For Automatic) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Instrument Panel Line)(#5321-6005)
| 01***10 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***25 | Bolt,(For Automatic) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (1/2) (Instrument Panel Line)(#6006-)
| 01***10 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 4 |
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (2/2) (Chassis Line)(#5001-5320)
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (2/2) (Chassis Line)(#5321-6005)
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Electrical System (2/2) (Chassis Line)(#6006-)
| 01***25 | Bolt,(For Automatic) | 2 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 3 |
| 01***10 | Bolt - Relay And Flasher Mounting | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts(#5001-5222)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***10 | Nut,(Without Air Conditioner) | 8 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 8 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts(#5223-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 12 |
| 01***10 | Nut,(Without Air Conditioner) | 8 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 12 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Engine Related Parts
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***60 | Bolt,(For Japan And Sweden) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping(#5001-5320)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***70 | Bolt (Op) | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping(#5321-)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***70 | Bolt (Op) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Instrument Panel
| 01***16 | Screw, Mount Parking Lights | 2 |
| 01***20 | Screw - Turn Signal And Parkinglight Mounting | 2 |
| 01***04 | Nut,(For Air Conditioner Less) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Power Take Off
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***35 | Screw | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
Komatsu : Pc05-6(S/N 5001-Up) : Engine Related Parts And Electrical System : Radiator And Piping
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
Guard
Komatsu : Pc05-6(S/N 5001-Up) : Guard : Canopy
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 10 |
Komatsu : Pc05-6(S/N 5001-Up) : Guard : Floor Plate
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***10 | Screw (Op) | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Guard : Floor Plate (With Attachment Control Pedal) (Except Japan)(#6006-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***10 | Screw (Op) | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Guard : Machine Cab(#5001-6005)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***16 | Washer,(For 35a Alternator) | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Guard : Machine Cab(#6006-)
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Guard : Operator'S Seat(#5001-6005)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Guard : Operator'S Seat(#6006-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 6 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Mark Plate? Tool And Kit
Komatsu : Pc05-6(S/N 5001-Up) : Mark Plate? Tool And Kit : Marks And Plates (English)(#6006-)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Caution,Fuel | 1 |
| 09***00 | Plate? Safety,Starting And After Operating | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Mark Plate? Tool And Kit : Marks And Plates (German)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Caution,Fuel | 1 |
| 09***00 | Plate? Safety,Starting And After Operating | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Mark Plate? Tool And Kit : Marks And Plates(#5001-6005)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Instruction,Fuel | 1 |
| 09***00 | Plate? Safety,Starting And After Operating | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Mark Plate? Tool And Kit : Marks And Plates(#6006-)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Starting And After Operating | 1 |
| 09***00 | Plate? Safety,Inspection And Maintenance | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Mark Plate? Tool And Kit : Tool
| 07***50 | Pump, (Bellows Type) | 1 |
| 07***03 | Cartridge - Grease | 1 |
| 07***22 | Nozzle, Grease Pump | 1 |
Swing System
Komatsu : Pc05-6(S/N 5001-Up) : Swing System : Swing Circle(#5001-6005)
| 01***50 | Bolt | 18 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 13 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Swing System : Swing Circle(#6006-)
| 01***50 | Bolt | 18 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 13 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
Under Carriage
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Front Idler
| 01***40 | Bolt | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 07***21 | O-Ring,Water Piping | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Hydraulic Piping (Travel Motor Line) (Lower)
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 14 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Recoil Spring (For Rubber Shoe)(#5482-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***21 | Nut | 2 |
| 01***32 | Washer, (Without Emergency Steering) | 8 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Recoil Spring(#5001-5481)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***21 | Nut | 2 |
| 01***32 | Washer, (Without Emergency Steering) | 8 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Recoil Spring(#5482-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***21 | Nut | 2 |
| 01***32 | Washer, (Without Emergency Steering) | 8 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Rubber Shoe
| 20***11 | Rubber Shoe Ass'Y | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Sprocket
| 01***25 | Bolt,See Fig. K4010-65a0 | 18 |
| 20***11 | Sprocket | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Track Frame
| 01***75 | Bolt,(For Shipping) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 20 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Track Frame (For Rubber Shoe)
| 01***75 | Bolt,(For Shipping) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 12 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Track Roller
| 07***21 | O-Ring,Water Piping | 2 |
| 10***30 | Seal Ring Ass'Y | 1 |
| 10***40 | O-Ring Ass'Y | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Under Carriage : Track Shoe
| 20***40 | Bushing | 2 |
| 20***60 | Pin,Regular Paint(1) | 62 |
| 20***40 | Pin,Master Paint(1) | 2 |
Work Equipment
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Arm
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Arm Cylinder
| 01***18 | Nut | 1 |
| 07***48 | O-Ring,(F4350-64a0 -21 ) | 1 |
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Blade
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Blade Cylinder
| 01***18 | Nut | 1 |
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 07***55 | O-Ring,(F4350-62a1 -14 ) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Boom (For Attachment) (Except Japan)(#6006-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Boom Cylinder
| 01***16 | Nut,(Balancer) | 1 |
| 07***48 | O-Ring,(F4350-64a0 -21 ) | 1 |
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Boom(#5001-6005)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Boom(#6006-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Bucket 0.022m3 (Mini 0.04m3) 250mm
| 02***50 | Bolt | 4 |
| 02***13 | Nut,(Pl) | 4 |
| 20***20 | Edge,Side (Welded) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Bucket 0.035m3 (Mini 0.06m3) 350mm
| 02***50 | Bolt | 6 |
| 02***13 | Nut,(Pl) | 6 |
| 20***00 | Bucket Ass'Y | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Bucket Cylinder
| 01***18 | Nut | 1 |
| 07***48 | O-Ring,(F4350-64a0 -21 ) | 1 |
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Bucket Link
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***70 | Bolt, Mount Bracket And Oil Inlet Tube, Bolt | 2 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Hydraulic Piping (Attachment Line) (Hoe Side) (Except Japan)(#6006-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***35 | Bolt,(For Position Fixing) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Hydraulic Piping (Blade Cylinder Line)
| 20***30 | Hose | 1 |
| 20***60 | Elbow | 2 |
| 20***70 | Hose | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Hydraulic Piping (Boom? Arm? Bucket Cylinder Line) (Hoe Side)
| 01***12 | Bolt,(See Fig.0501) | 9 |
| 01***20 | Screw | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Hydraulic Piping (For Long Arm)
| 01***12 | Bolt,(See Fig.0501) | 9 |
| 01***20 | Screw | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Long Arm
| 07***03 | Bushing | 6 |
| 07***30 | Seal,Dust (Kit) | 6 |
| 20***30 | O-Ring | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Swing Bracket(#5001-6005)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Swing Bracket(#6006-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment : Swing Cylinder
| 01***18 | Nut | 1 |
| 07***48 | O-Ring,(F4350-64a0 -21 ) | 1 |
| 07***45 | O-Ring,(F4350-60a0 -9 ) | 1 |
Work Equipment Control System
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : 1-Spool Control Valve (For Attachment) (Except Japan)(#6006-)
| 01***10 | Bolt | 2 |
| 01***16 | Bolt (Op) | 2 |
| 01***20 | Bolt (Itl) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : 8-Spool Control Valve (1/2)(#5001-6005)
| 01***10 | Bolt | 16 |
| 01***16 | Bolt (Op) | 16 |
| 01***20 | Bolt (Itl) | 8 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : 8-Spool Control Valve (1/2)(#6006-)
| 01***10 | Bolt | 16 |
| 01***16 | Bolt (Op) | 16 |
| 01***20 | Bolt (Itl) | 8 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : 8-Spool Control Valve (2/2)(#5001-6005)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : 8-Spool Control Valve (2/2)(#6006-)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 3 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Piping (Attachment Line) (Chassis Side) (Except Japan)(#6006-)
| 01***16 | Bolt (With Air Heater & Conditioner) | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Piping (Boom? Arm? Bucket Cylinder Line) (Chassis Side)(#5001-5611)
| 01***25 | Bolt - Relay Mounting | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 6 |
| 20***40 | Clamp | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Piping (Boom? Arm? Bucket Cylinder Line) (Chassis Side)(#5612-)
| 01***25 | Bolt - Relay Mounting | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 6 |
| 20***40 | Clamp | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Piping (Suction And Return Line)
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 11 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Piping (Suction And Return Line) (For Attachment) (Except Japan)(#6006-)
| 01***25 | Bolt,Without Revolution Sensor | 7 |
| 01***30 | Bolt,(For Mechanical Governor) | 11 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Piping (Swing Motor And Boom Swing Line)
| 01***40 | Bolt, Mount Master Brake Cylinder | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 07***18 | O-Ring, Divider Valve Mounting | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Piping (Travel And Blade Line)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 6 |
| 07***10 | Connector, At Case | 4 |
| 20***50 | Hose | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Pump (1/2)
| 04***15 | Ring, Snap | 1 |
| 70***10 | Shaft Seal | 1 |
| 70***70 | Plate | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Pump (2/2)
| 01***25 | Bolt | 6 |
| 01***23 | Washer,(For Shipping) | 6 |
| 07***21 | O-Ring,Water Piping | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Hydraulic Tank
| 01***20 | Bolt,(With Auto Emergency Steering) | 10 |
| 01***16 | Bolt, Mount Solenoid Valve | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 10 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Swing Motor
| 20***90 | Seal,Inner | 1 |
| 20***40 | O-Ring | 1 |
| 20***00 | Swing Motor Ass'Y | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Swivel Joint(#5001-5781)
| 01***25 | Bolt | 4 |
| 04***20 | Ring, Retaining | 1 |
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Swivel Joint(#5782-)
| 01***25 | Bolt | 4 |
| 04***20 | Ring, Retaining | 1 |
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Travel Motor (1/3)
| 20***70 | Plug | 3 |
| 20***00 | Travel Motor Ass'Y | 2 |
| 20***01 | Travel Motor Ass'Y | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Travel Motor (2/3)
| 04***12 | Pin, Spring | 4 |
| 04***12 | Ring,Split, Ring-Snap | 1 |
| 20***00 | Travel Motor Ass'Y | 2 |
Komatsu : Pc05-6(S/N 5001-Up) : Work Equipment Control System : Travel Motor (3/3)
| 01***20 | Screw | 6 |
| 04***12 | Pin,Spring (See Fig.0201) | 1 |
| 20***00 | Travel Motor Ass'Y | 2 |
Frequently asked questions
What engine does the Komatsu PC05-6 (S/N 5001-up) use?
A Komatsu 3D72-2 series engine — 3D72-2B on the factory spec sheet, 3D72-2FC/3D72-2GC in parts records — a Yanmar-built, water-cooled, naturally aspirated 3-cylinder mechanical diesel producing roughly 9.6 kW gross. There is no turbocharger and no ECM.
What is the operating weight of the PC05-6?
About 1.23 t (1,230 kg) in standard configuration, placing it in Komatsu's micro/mini excavator class among the era's sub-1.5 t backhoes.
What replaced the Komatsu PC05-6 (S/N 5001-up)?
Komatsu's PC05 line moved on to the PC05-7, built across two separate serial blocks (S/N 8001-up, then S/N F20001-up) from the late 1980s into the 1990s. A Perkins-engined PC05-6F ran alongside the 3D72-2-powered PC05-6 on its own serial block, but it is a parallel variant, not a direct successor.
What PC05-6(S/N 5001-UP) owners discuss
What engine does the PC05-6 (S/N 5001-UP) actually run, and is the "Yanmar" talk accurate?
Factory tag reads 3D72-2B, Komatsu's own designation for a block built to the Yanmar 3TNA72 (3TN72 family) design. Owners cross-reference wear and fuel-system parts against the Yanmar 3TN72 series because Komatsu-branded parts for this specific engine are thin on the ground. It is naturally aspirated, 3-cylinder, mechanical inline injection pump, no ECM and no electronic governor. Treat it as a fully mechanical-era diesel.
Any known quirks with the fuel system or injection pump on this engine?
On these older Diesel Kiki/Zexel-style mechanical pumps, a clogged fuel-inlet screen at the pump is a repeat cause of an engine that starts, runs a few seconds, then dies. Owners pull the banjo fitting at the pump inlet and clean the small strainer before chasing anything bigger. Since there's no electronic fuel control, nearly every no-start or dies-after-cranking complaint on this generation traces back to fuel delivery: air in the line, stale or gummed fuel, or a blocked screen/filter, not a sensor or relay. Have your dealer verify pump timing and pressure if cleaning the screen doesn't resolve it.
What hydraulic behaviors show up as these machines age?
Weak or slow travel while digging functions stay strong points to worn swivel-joint (rotary manifold) seals behind the boom mounting pin letting oil bypass internally rather than reach the travel motors. Notchy or gradually weakening swing under load on a machine this size is usually swing-motor seal or gear wear rather than the main pump. Before condemning a pump or motor, check hydraulic oil condition first — cloudy fluid, metallic smell, or visible particulate point to contamination as the real cause. Have your dealer verify pump and motor condition before replacing major hydraulic components.
What undercarriage or track wear pattern is typical for this class of machine?
The PC05-6 runs a narrow rubber track around 230 mm wide, shared across several PC05-generation siblings. Common complaints are track tension creeping loose over time and lug wear accelerating fast when the machine is run on gravel or pavement instead of dirt. Replacement tracks with steel links bonded into the rubber and drop-forged inserts are reported to hold tension and resist edge-tearing better than budget alternatives on machines that get re-tensioned repeatedly.
Any electrical or sensor issues to know about on this generation?
This machine predates electronic engine controls: no ECM, no fault codes to read. The electrical system is limited to battery, starter, a glow-plug relay/timer, and basic gauges or warning lamps. Reported issues are simple ones — weak battery or loose ground connections causing slow cranking (which starves the mechanical injection pump of the cranking speed it needs to fire), and a worn glow-plug relay or timer causing hard cold starts. Diagnosis is continuity and voltage-drop testing with a multimeter, not a code reader.
Does this engine need a warm-up starting routine like other diesels of its era?
Yes. Like other mechanical diesels from this period, owners cycle the glow plugs and let them preheat for roughly 15-20 seconds before cranking, especially in cold weather, rather than cranking immediately. Skipping the glow-plug cycle is a common self-inflicted cause of hard starting reported for machines of this vintage and class, not a sign of a failing engine.
What should a buyer check on a used PC05-6 (S/N 5001-UP)?
Start the engine cold if possible and watch for excessive smoke or hard starting even with a full glow-plug cycle. Check track tension and rubber condition — cracking and dry rot are common on tracks this old regardless of hours. Cycle boom, arm, bucket, swing, and travel and watch for drift, slow return, or weak travel power that points to cylinder or motor seal wear. Look for oil in the coolant or coolant in the oil as a head-gasket check on the 3-cylinder engine. Confirm the fuel system isn't gummed from fuel sitting over long storage periods. Confirm the serial number falls in the 5001-up parts break before ordering parts, since earlier PC05-6 serials use different components. Have your dealer verify engine compression and hydraulic pump output before final purchase.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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