Komatsuhydraulic excavatorsmall ( - pc90)
Komatsu PC20-6(S/N 24001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC20-6 (S/N 24001-UP) is a sub-3-tonne mini hydraulic excavator built from 1989 to 1996, following the PC20-3 (1984-88) and PC20-5 (1988-95) in Komatsu's PC20 mini-excavator line. Power comes from Komatsu's own 3D84-1 series diesel (3D84-1FA/3D84-1GA), a mechanically governed, mechanically injected 3-cylinder, 1.413 L engine rated about 25.6 HP (19.1 kW) gross at 2,600 rpm, started on a thermostart intake-air heater rather than glow plugs. Operating weight runs roughly 2.6-2.93 t depending on canopy vs. cab, steel vs. rubber shoes, and counterweight fitted, with a transport length near 4.7 m, maximum dig depth around 2.65 m, and maximum reach near 4.67 m. Komatsu offered the model with canopy or enclosed cab, rubber or steel track shoes, and a factory third-pump/breaker circuit selected by a left-side switch for single-acting attachments like hydraulic breakers.
Across the PC20 family, the -6 generation kept purely mechanical fuel injection and an analog gauge cluster while later machines added electronics: the PC20-7 (S/N 35001-UP, plus a separate F20001-Up range) succeeded it, followed by reduced-tail and micro variants like the PC20MR-1-K, PC20MRX-1, and PC20R-8. That mechanical simplicity is exactly why -6 machines still turn up on job sites and in salvage yards today - no ECU, no stored fault codes, and few sensors to fail, so troubleshooting stays gauge-and-wrench work instead of software work. Values sit at the low end of the mini-excavator market and units mostly move for parts, light landscaping, or utility trenching, where an inexpensive, easy-to-fix old machine beats emissions compliance or hydraulic sophistication.
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 PC20-6(S/N 24001-UP) specifications
Engine
| Model | Komatsu 3D84-1 series diesel (documented as 3D84-1FA from engine S/N 25916-up within this machine's serial range; earlier units in the range use a related 3D84-1 suffix) |
| Power | 25.6 HP (19.1 kW) gross at 2,600 rpm |
| Displacement | 1.413 L (86.2 cu in) |
| Cylinders | 3, in-line, water-cooled diesel, direct injection |
| Emissions tier | Pre-regulation era (built 1989-1996); no EPA or EU emissions tier applies |
Weights
| Operating weight | 2,835 kg (6,251 lb) in standard canopy configuration; wider PC20-6 line references range from about 2,640-2,930 kg depending on counterweight, cab/canopy and undercarriage option -- varies by configuration |
| Ground pressure | About 30 kPa (0.31 kg/cm2, 4.4 psi) with standard 300 mm rubber shoes -- single-source figure, verify with dealer |
| Transport weight | Not separately documented; treat as equal to operating weight for standard transport |
Dimensions
| Transport length | 4,670-4,700 mm (15'4"-15'5") |
| Transport width | 1,520-1,550 mm (5'0"-5'1") |
| Transport height (canopy) | 2,470-2,520 mm (8'1"-8'3") |
| Track shoe width | 300 mm (11.8 in), standard rubber shoe |
| Ground clearance | About 295 mm (11.6 in) -- single-source figure, verify with dealer |
| Tail swing radius / undercarriage length | Not documented for this exact serial range in sources reviewed -- verify with the factory shop manual or a dealer |
Performance
| Max dig depth | 2,650 mm (8'8") per listings tied to this serial range; broader PC20-6 line references up to 3,160 mm (10'4") for a deeper-reach setup -- varies by configuration |
| Max reach at ground level | 4,670 mm (15'4") per listings tied to this serial range; broader PC20-6 line references up to 4,995 mm (16'4") -- varies by configuration |
| Max dump / digging height | 4,735 mm (15'6") |
| Swing speed | 10.0 rpm per listings tied to this serial range; broader PC20-6 line references about 8.6 rpm -- varies by configuration/series |
| Travel speed | 2.4 km/h (1.5 mph) low range; parts catalog references an optional second (high) travel speed setup |
Forces
| Bucket digging force | About 19-21 kN (1,900-2,140 kgf / 4,200-4,700 lbf) -- varies by source and bucket type |
| Arm / stick digging force | Not documented for this exact serial range in sources reviewed -- verify with the factory shop manual or a dealer |
Service capacities (summary)
| Fluid capacities (fuel tank, hydraulic system, engine oil, cooling system) | Not published in any source reviewed for this exact serial range. Consult the factory shop manual covering S/N 24001-up, or a Komatsu dealer, for exact fill capacities |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC20-6(S/N 24001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not published in available sources for this serial range. This is a small 3-cylinder diesel (roughly 1.4-1.5 L displacement class); expect a crankcase-with-filter refill in the low single-digit liter range, but confirm against the OMM before servicing. | Diesel engine oil, API CD/CE class or better. Select viscosity by ambient temperature the way Komatsu charts of this era do: SAE 10W or 10W-30 for cold starts, SAE 30 or 15W-40 for warm climates. |
| Cooling system | Not published in available sources for this serial range. | Water mixed with a permanent-type (ethylene-glycol) antifreeze/coolant. Mix ratio is set for the lowest expected ambient temperature at the job site. |
| Fuel tank | One equipment-spec listing puts the tank near 40 L (10.6 US gal), but that figure is not corroborated elsewhere and reads high for a machine in this weight class (roughly 2.8-2.9 t) - treat as unverified until checked against the OMM or a dealer. | No. 2 diesel fuel. Top off at the end of each shift to limit tank condensation. |
| Hydraulic system total AND hydraulic tank | The same single, uncorroborated listing puts total hydraulic system oil near 65 L (17.2 US gal); tank-only volume is not separately documented anywhere found. Treat both figures as unverified pending OMM confirmation. | Anti-wear hydraulic oil, viscosity selected by ambient temperature per the machine's SAE viscosity chart - lighter grade for cold-weather starts, heavier grade for sustained hot-weather operation. |
| Final drive (each) | Not published in available sources for this serial range. | SAE gear oil (single-grade), per owner/service references for this class of Komatsu compact excavator. Confirm exact grade and change interval against the OMM. |
| Swing drive | Not published in available sources for this serial range. | Same gear oil specification used in the final drives; the swing (slew) gear case shares the final-drive fill on this class of machine per owner/service references. |
| Pilot/other circuits | No separate reservoir documented for this serial range. | Not separately specified - the pilot circuit draws from the main hydraulic tank on this class of Komatsu excavator. |
| Grease (spec only) | N/A - lubrication points, not a fluid reservoir. | General-purpose lithium-base EP (extreme-pressure) grease at pins, bushings and bucket linkage, applied per the lubrication schedule. A specific Komatsu-branded grease name is not confirmed for this exact serial range in available sources. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC20-6(S/N 24001-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 PC20-6(S/N 24001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
The PC20-6 carries no electronic monitor or fault-code system, so predictive care runs on physical inspection and oil sampling instead of telemetry. Pull an engine oil sample from the 3D84-1FA/GA at every change to track wear-metal trends before low oil pressure becomes the first symptom. Watch hydraulic oil color and clarity closely; the small reservoir and single return filter let contamination show up fast. Treat a hard, smoky cold start as a diagnostic signal too - it points to thermostart, injection pump, or timing wear well before outright failure.
Corrective & Common Repairs
Recurring PC20-6 complaints trace to mechanical wear, not electronics. Hard cold starts come from a weak thermostart valve, a tired injection pump, or fuel-timing drift - work through them by elimination rather than assuming one cause. Control levers going sloppy over time is worn rod ends in the mechanical pilot linkage, not the valve bank; replacing them and truing elongated mounting holes restores feel. Check the third-pump/breaker selector switch and diverter valve position before condemning the pump if an attachment isn't getting flow - a partially thrown switch is a common culprit.
Overhaul & Rebuild Points
Machines in this serial block are now 30-plus years old, so overhaul planning centers on the injection pump and thermostart system, the mechanical control linkage, and the travel/swing motors. Light seal weep at the travel and swing motor housings is normal for the age; active dripping under load signals a seal job. Final drives use a plug-fill arrangement, but oil type and quantity aren't documented outside the factory shop manual for this range, so confirm before opening one up. Inspect harness connectors for corrosion and the starter-interlock wiring during any electrical rebuild.
Seasonal & Environment Servicing
Cold starts rely entirely on the thermostart intake heater since this engine has no glow plugs; test heater draw and coolant strength before winter, since a stone-cold start is the best field test of injection pump and thermostart condition. Rubber-track life on this small undercarriage varies enormously with ground conditions - abrasive or rocky sites combined with loose tension can cut life to a few hundred hours, while clean ground and regular tension checks stretch it much further. Judge undercarriage condition by physical wear, not hours claimed, when servicing a used machine seasonally.
PC20-6(S/N 24001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| YM171051-92760 | Wrench,Fuel Filter? Water Separator | Fuel system service | Check fitment → |
| 20S-98-12230 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| 20S-98-22630 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| 20N-98-21290 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| 203-00-21180 | Plate? Caution,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC20-6(S/N 24001-UP) attachments & work tools
Buckets
Factory GP bucket is rated at 0.12 m³ (0.16 cu yd) at 270 mm (10.6 in) width, with a tear-out force around 21 kN. Aftermarket digging buckets for this weight class typically run 150-600 mm (6-24 in) working width, with capacity roughly 0.03-0.08 m³ on narrower or reinforced HD/rock profiles; no-tooth grading buckets run wider, up to about 900 mm to 1,200 mm (36 to 48 in), for leveling and cleanup work. Buckets mount pin-on as standard. Bucket pin diameter for this nameplate is 30 mm; ear spacing varies by generation, so confirm center-to-center and ear width before ordering.
Hydraulic hammers
This exact serial range (24001-UP) is factory-fitted with a 3rd-pump auxiliary circuit for a hydraulic breaker or other one-way attachment, switched in from a selector on the left side of the machine per the factory service manual for this range. Breaker sizing for this weight bracket (roughly 2.6-2.9 t operating weight) falls in the general 2.5-3.8 t excavator breaker class, in the neighborhood of 90-120 bar working pressure. Match the breaker's rated flow and pressure to this machine's 3rd-pump output rather than assuming a fixed figure — flow varies by hydraulic configuration on this vintage.
Quick couplers
No factory hydraulic quick-coupler circuit is standard on the PC20-6. Manual (mechanical pin-grabber) quick couplers sized for 1-3 t mini excavators with 30 mm pins are the common aftermarket fit for this class, letting buckets, thumbs, and light attachments swap without a hammer and drift pins. Hydraulic self-locking couplers are uncommon on this size and vintage and would need to be plumbed into the breaker-style auxiliary circuit.
Thumbs/grapples
A pin-on/hydraulic thumb is a documented dealer fitment for the PC20-6 — refurbished units are commonly sold already equipped with one. General sizing guidance for this class puts the thumb around 600 mm (24 in) long, matched to the stick length, running off the low-flow breaker-style auxiliary circuit. Grapples (rotating, pipe, or pallet type) are sold by some Komatsu-line attachment suppliers across the broader excavator range, but a grapple sized and confirmed specifically for the PC20-6 was not found — verify fitment before ordering.
Rippers
A dedicated ripper attachment is not typically offered for this weight class. Aftermarket pin-on ripper compatibility charts generally start around 2,700-4,300 kg (6,000-9,500 lb) machines, with the smallest listed Komatsu compatibility one size class up from the PC20-6. For breaking hard ground or shallow rock on this machine, a reinforced HD or rock bucket with aggressive teeth is the practical substitute.
Hydraulic kit notes
The PC20-6 (S/N 24001-UP) breaker/attachment provision is a 3rd-pump, selector-switch circuit for one-way tools, not a full two-way high-flow circuit — adequate for a breaker or a single-acting thumb but not sized for rotating grapples or other bidirectional tools without added plumbing. Pump flow and relief-pressure figures reported for this nameplate generation run around 78 L/min combined pump flow at roughly 17,000 kPa (2,490 psi) relief; treat as indicative for the generation and verify the exact circuit spec for this serial range with a dealer before sizing a tool.
All PC20-6(S/N 24001-UP) assemblies by section
Every catalogued assembly group for the Komatsu PC20-6(S/N 24001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
3d84-1fa Engine S/N 25916-Up
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Air Cleaner And Mounting (Double Element)
| YM***50 | Clamp Ass'Y | 1 |
| YM***80 | Valve | 1 |
| YM***70 | Seat | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Air Cleaner And Mounting (Single Element)
| YM***41 | Buffle | 1 |
| YM***60 | Bolt,Wing | 1 |
| YM***70 | Seat | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Air Intake Manifold And Connection
| YM***32 | Manifold,Air Intake | 1 |
| YM***00 | Clamp | 2 |
| YM***51 | Hose | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Alternator
| YM***90 | Bearing,Ball | 1 |
| YM***20 | Front Cover Ass'Y | 1 |
| YM***40 | Cover,Rear | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Alternator And Mounting
| YM***02 | Nut | 1 |
| YM***02 | Bolt | 1 |
| YM***52 | Screw | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Camshaft And Tappet
| YM***00 | Gear | 1 |
| YM***00 | Key | 1 |
| YM***20 | Nut | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Crankshaft
| YM***00 | Crankshaft Ass'Y | 1 |
| YM***50 | Pulley,Crank | 1 |
| YM***00 | Metal Ass'Y,No.2 (Std) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Cylinder Block
| YM***60 | Cylinder Block A | 1 |
| YM***60 | Parallel Pin | 3 |
| YM***22 | Stud | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Cylinder Head
| YM***50 | Nut | 6 |
| YM***02 | Nut | 8 |
| YM***00 | Plug | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Cylinder Head Cover
| YM***30 | Spacer | 1 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***52 | Bolt Plated | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Engine Stop Motor
| YM***80 | Ring,Snap | 1 |
| YM***10 | Bracket | 1 |
| YM***00 | Pin,Cotter | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Exhaust Manifold And Muffler
| YM***02 | Screw | 3 |
| YM***02 | Nut | 4 |
| YM***22 | Stud | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Flywheel And Flywheel Housing
| YM***82 | Bolt | 8 |
| YM***00 | Housing,Flywheel | 1 |
| YM***90 | Flywheel Ass'Y | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Front Cover
| YM***31 | Packing | 1 |
| YM***52 | Bolt | 7 |
| YM***24 | Bearing,Ball | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Fuel Filter And Mounting
| YM***00 | O-Ring (Kit) | 1 |
| YM***20 | Spring | 1 |
| YM***00 | Tube | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Fuel Injection Pump
| YM***70 | Retainer, Spring | 3 |
| YM***20 | Spring | 3 |
| YM***40 | Adjusting Plate A | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Fuel Injection Pump And Piping
| YM***20 | Pipe,Injection? No.2 | 1 |
| YM***90 | Hose | 1 |
| YM***00 | Tube | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Fuel Nozzle And Spill Hose
| YM***10 | Chamber,Rear | 3 |
| YM***10 | Spindle | 1 |
| YM***00 | Hose | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Gasket Kit
| YM***10 | Gasket,(Not Shown) | 1 |
| YM***20 | O-Ring,Cylinder Head Cover Bolt | 3 |
| YM***20 | Gasket,Exhaust Manifold | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Governor Control
| YM***00 | Pin,Taper | 1 |
| YM***70 | Bushing | 1 |
| YM***00 | Sleeve | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Lubricating Oil Filter
| YM***10 | O-Ring (Kit) | 1 |
| YM***20 | Plate? Caution | 1 |
| YM***50 | Nut | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Lubricating Oil Pump And Piping
| YM***21 | Packing | 1 |
| YM***10 | Gasket | 1 |
| YM***00 | Tube | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Oil Pan(#25916-35224)
| YM***41 | Bracket | 1 |
| YM***00 | Gauge,Level | 1 |
| YM***40 | Oil Pan Ass'Y | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Oil Pan(#35225-)
| YM***41 | Bracket | 1 |
| YM***00 | Gauge,Level | 1 |
| YM***02 | Nut | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Piston And Connecting Rod
| YM***00 | Ring,Snap | 6 |
| YM***90 | Piston Ass'Y | 3 |
| YM***01 | Bolt | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Rocker Arm
| YM***70 | Support | 2 |
| YM***02 | Nut,Rock | 2 |
| YM***60 | Rocker Arm Ass'Y,Exhaust | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Safety Relay And Thermostart Timer
| YM***00 | Feed Pump Ass'Y | 1 |
| YM***20 | Timer,Thermostart | 1 |
| YM***00 | Relay,Safety | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Starting Motor
| YM***30 | Dust Cover Set | 1 |
| YM***70 | Brush Holder Ass'Y | 1 |
| YM***10 | Terminal Cover | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Starting Motor And Mounting
| YM***02 | Nut | 2 |
| YM***02 | Nut,Rock | 1 |
| YM***00 | Washer,Spring | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Thermostart And Connection
| YM***80 | Clamp | 4 |
| YM***20 | Clamp | 1 |
| YM***11 | Hose? 2500mm,(Pc30) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Tool
| YM***60 | Wrench,Fuel Filter? Water Separator | 1 |
| YM***00 | Tool Ass'Y,(Pc38uu) | 1 |
| YM***50 | Screw Driver | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Water Pump And Cooling Fan
| YM***22 | Screw | 2 |
| YM***02 | Screw | 4 |
| YM***52 | Screw | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : 3d84-1fa Engine S/N 25916-Up : Water Separator
| YM***00 | Gasket | 2 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***50 | Plug,Air | 2 |
Control System And Revolving Frame
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Arm Control Linkage (6way Shift Pattern Spec.)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Blade Control Lever
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Blade Control Lever And Linkage (1/2) (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***55 | Bolt, Mount Tube To Switch Pump | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Blade Control Lever And Linkage (2/2) (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Boom Control Linkage (6 Way Shift Pattern Spec.)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***30 | Bolt,(For Mechanical Governor) | 3 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Boom Swing? Arm? Swing Control Linkage (I.S.O. Pattern) (Except Japan)
| 01***06 | Nut,L.H. Thread (For Russian) | 3 |
| 01***08 | Nut,(For Straight Tilt Dozer) (D65p) | 3 |
| 04***10 | Pin, Cotter | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Boom? Bucket Control Lever (For I.S.O. Pattern) (Except Japan)
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***06 | Nut,L.H. Thread (For Russian) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Bucket Control Linkage (6 Way Shift Pattern Spec.)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 7 |
| 01***30 | Bolt,(For Mechanical Governor) | 3 |
| 01***35 | Bolt,(For Position Fixing) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Contor Pedal (For Attachment)
| 01***25 | Bolt,Without Revolution Sensor | 1 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Control Pedal (For Breaker Spec)
| 01***25 | Bolt,Without Revolution Sensor | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Fuel Control Lever
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Revolving Frame (Breaker And Attachment)(#24001-29360)
| 20***11 | Frame,Revolving (For Breaker) | 1 |
| 20***10 | Frame,Revolving (For Attachment) | 1 |
| 20***60 | Cover | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Revolving Frame (Breaker And Attachment)(#29361-)
| 20***12 | Frame,Revolving (For Breaker) | 1 |
| 20***10 | Frame,Revolving (For Attachment) | 1 |
| 20***61 | Cover | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Revolving Frame (For Moment Limit System) (Without Cab Of Except Japan)
| 20***12 | Frame,Revolving (For Breaker) | 1 |
| 20***10 | Frame | 1 |
| (2***0) | Frame Group,Revolving | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Revolving Frame(#24001-29360)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***60 | Bolt, Tube To Oil Cooler | 6 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Revolving Frame(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***60 | Bolt, Tube To Oil Cooler | 6 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Swing Control Lever (6way Shift Pattern Spec.)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Travel Control Lever (1/2) (6 Way Shift Pattern Spec.)(#29361-)
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 7 |
| 01***25 | Screw | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Travel Control Lever (1/2)(For I.S.O. Pattern) (Except Japan)
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
| 01***25 | Screw | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Travel Control Lever (2/2) (6 Way Shift Pattern Spec.)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Travel Control Lever (2/2) (For I.S.O. Pattern) (Except Japan)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Travel Control Lever (For 2nd Travel Speed) (Op)
| 20***10 | Bracket,(For 2nd Travel Speed) (Op) | 1 |
| (2***0) | Cover | 2 |
| (0***5) | Screw | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Travel Speed Pedal (For 2nd Travel Speed) (Op)
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***30 | Bolt,(For Mechanical Governor) | 1 |
| 01***06 | Nut,L.H. Thread (For Russian) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Work Equipment Control Lever (1/2) (6 Way Shift Pattern Spec.)(#29361-)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 8 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 6 |
| 01***23 | Washer,(With Auto Emergency Steering) | 8 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Work Equipment Control Lever (1/2) (For I.S.O. Pattern) (Except Japan)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Work Equipment Control Lever (2/2) (6 Way Shift Pattern Spec.)(#29361-)
| 01***40 | Bolt,(With Air Conditioner) | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***60 | Bolt, Mount Tube To Switch Pump | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Work Equipment Control Lever (2/2) (For I.S.O. Pattern) (Except Japan)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Control System And Revolving Frame : Work Equipment Control Linkage (6 Way Shift Pattern Spec.)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Screw | 1 |
Engine Related Parts And Electrical System
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Battery
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Battery (Cold Territory Spec.)
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 4 |
| 01***12 | Washer,(With Body Positioner) | 2 |
| 08***00 | Terminal? (+),(10l) (Not Shown) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Car Radio
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***12 | Screw,(Additional Sun Visor) | 8 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Cluster Gauge
| 20***40 | Gauge Ass'Y,Cluster | 1 |
| KA***00 | Gauge,Water Temperature | 1 |
| KA***00 | Meter,Service | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Electrical System
| 01***16 | Bolt (With Air Heater & Conditioner) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 5 |
| 01***08 | Screw, Terminal | 5 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Electrical System (Boom Side)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 08***60 | Bulb? 60w | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Electrical System (For Moment Limit System) (Without Cab Of Except Japan)
| 20***70 | Switch,Auto Deceleration And Parking | 1 |
| 20***30 | Wire Ass'Y | 1 |
| 20***10 | Wire Ass'Y | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 16 |
| 01***16 | Screw, Mount Parking Lights | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Engine Related Parts
| 01***30 | Bolt,(For Mechanical Governor) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Fuel Tank And Piping
| 01***20 | Bolt,(Without Maintenance Monitor) | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 5 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Instrument Panel
| 01***10 | Bolt,(With Auto Emergency Steering) | 5 |
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***06 | Screw | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Power Take Off
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Screw | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Engine Related Parts And Electrical System : Radiator And Piping
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***14 | Bolt | 6 |
Guard
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Canopy
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 15 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Car Heater
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 5 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Electrical System (For Cab)(#24001-29360)
| 01***16 | Screw,(Sandy And Dusty Terrain S.) | 2 |
| 01***16 | Screw, Mount Parking Lights | 2 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Electrical System (For Cab)(#29361-)
| 01***16 | Screw,(Sandy And Dusty Terrain S.) | 2 |
| 01***16 | Screw, Mount Parking Lights | 2 |
| 01***10 | Washer,Spring (For Engine Room Lamp) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Machine Cab (1/3)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***80 | Bolt,(For Adjustable Rod) | 3 |
| 01***16 | Bolt,(With Alternator Cover Type) | 5 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Machine Cab (1/3) (For Attachment)
| 01***10 | Nut,(Without Air Conditioner) | 10 |
| 09***37 | Bumper,(For Attachment) | 2 |
| 20***60 | Floor | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Machine Cab (2/3)
| 01***20 | Bolt,(Without Maintenance Monitor) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Machine Cab (3/3) (For Breaker)(#24001-29360)
| 20***40 | Cover (Welded) | 2 |
| 20***60 | Hinge (Welded) | 2 |
| 20***10 | Hood,(For Breaker) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Machine Cab (3/3) (For Vandalism Protection)
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Machine Cab (3/3)(#24001-29360)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Machine Cab (3/3)(#29361-)
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Maching Cab (1/3) (For Breaker)
| 01***10 | Nut,(Without Air Conditioner) | 9 |
| 09***37 | Bumper,(For Attachment) | 1 |
| 20***50 | Frame,(For Breaker) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (1/4)(#24001-29360)
| 01***30 | Bolt,(For France Noise Suppression) | 9 |
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***12 | Bolt,(With Cylinder Cover) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (1/4)(#29361-)
| 01***10 | Bolt,(With Auto Emergency Steering) | 2 |
| 01***12 | Bolt,(With Cylinder Cover) | 4 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (2/4)(#24001-29360)
| 20***20 | Sash Ass'Y | 1 |
| 20***30 | Sash | 1 |
| 20***60 | Glass | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (2/4)(#29361-)
| 20***01 | Operator'S Cab Ass'Y | 1 |
| 20***20 | Sash Ass'Y | 1 |
| 20***30 | Sash | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (3/4)(#24001-29360)
| 01***08 | Screw | 2 |
| 01***08 | Screw | 4 |
| 04***12 | Rivet | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (3/4)(#29361-)
| 01***08 | Screw | 2 |
| 01***08 | Screw | 4 |
| 04***12 | Rivet | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (4/4)(#24001-29360)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (4/4)(#29361-29985)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 10 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Cab (4/4)(#29986-)
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***12 | Screw,(For Side Lamp) (Not Shown) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Seat (For Cab)(#24001-29360)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 9 |
| 01***10 | Nut,(Without Air Conditioner) | 8 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 5 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Seat (For Cab)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,Without Revolution Sensor | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Seat (For Canopy)(#24001-29360)
| 01***35 | Bolt,(For Position Fixing) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 9 |
| 01***50 | Bolt,(With Service Valve R.H.) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Seat (For Canopy)(#29361-)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***25 | Bolt,Without Revolution Sensor | 8 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Operator'S Seat (With Oil Suspension) (Op)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Guard : Window Washer
| 01***08 | Screw - Holder | 2 |
| 01***08 | Washer,(For Fixed Type Ripper) | 2 |
| 08***08 | Grommet,(Without Beacon Lamp) | 1 |
Mark Plate? Tool And Kit
Komatsu : Pc20-6(S/N 24001-Up) : Mark Plate? Tool And Kit : Marks And Plates (6way Shift Pattern Spec.) (Japanese)(#29361-)
| 20***50 | Plate Operating | 1 |
| 20***60 | Plate Operating,(For Canopy) | 1 |
| 20***70 | Plate Operating,(For Cab) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Mark Plate? Tool And Kit : Marks And Plates (English)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Lock Lever (With Lock Pin) | 1 |
| 09***00 | Plate? Safety,Starting And After Operating | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Mark Plate? Tool And Kit : Marks And Plates (French) (For Cab)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Swing Lock Lever | 1 |
| 09***00 | Plate? Safety | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Mark Plate? Tool And Kit : Marks And Plates (Japanese)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Swing Lock Lever | 1 |
| 09***00 | Plate? Safety,Starting And After Operating | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Mark Plate? Tool And Kit : Tool
| 07***50 | Pump, (Bellows Type) | 1 |
| 07***03 | Cartridge - Grease | 1 |
| 07***45 | Nozzle, Grease Pump (Non-Flexible Type) | 1 |
Swing System
Komatsu : Pc20-6(S/N 24001-Up) : Swing System : Swing Circle
| 01***70 | Bolt, Accumulator Mounting Bracket | 38 |
| 04***34 | Pin-Dowel, Pin,Dowel (For Shipping) | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Swing System : Swing Machinery
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***90 | Bolt,(Without Giant Ripper) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Under Carriage
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Front Idler
| 01***45 | Capscrew - M10 X 1.25 | 2 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
| 07***28 | O-Ring, Strainer To Control Pump Line | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Recoil Spring
| 01***60 | Bolt, Tube To Oil Cooler | 8 |
| 01***26 | Nut,(For Rubber Shoe) | 2 |
| 01***26 | Nut | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Sprocket
| 01***30 | Bolt,(Not Used With Emergency Str.) | 18 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 18 |
| 20***10 | Sprocket | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Track Frame
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***45 | Bolt,(For Power Tilt Mech Angle) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Track Roller
| 01***35 | Bolt,R.H. Outside And L.H. Inside | 16 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 16 |
| 07***21 | O-Ring,Water Piping | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Track Shoe (Double Grouser)
| 20***14 | Track Shoe Ass'Y | 1 |
| 20***24 | Shoe Ass'Y,Regular | 84 |
| 20***26 | Shoe Ass'Y,Regular | 84 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Track Shoe (Double Grouser) (With Hole)
| 20***32 | Track Shoe Ass'Y | 1 |
| 20***80 | Shoe Ass'Y,Regular | 84 |
| 20***81 | Shoe Ass'Y,Regular | 84 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Track Shoe (Flat Type)
| 20***42 | Track Shoe Ass'Y | 1 |
| 20***52 | Shoe Ass'Y,Regular | 84 |
| 20***54 | Shoe Ass'Y,Regular | 84 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Track Shoe (Rubber Type)
| 20***10 | Shoe,Rubber | 2 |
| 20***11 | Shoe,Rubber | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Under Carriage : Track Shoe (Swamp Type)
| 20***72 | Track Shoe Ass'Y | 1 |
| 20***82 | Shoe Ass'Y,Regular | 84 |
| 20***84 | Shoe Ass'Y,Regular | 84 |
Work Equipment
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Arm
| 01***30 | Bolt,(Not Used With Emergency Str.) | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
| 07***35 | Seal,Dust (Kit) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Arm (For Breaker)
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
| 20***20 | Arm Ass'Y | 1 |
| (2***1) | Pin | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Arm Cylinder
| 07***75 | O-Ring,Steering Oil Filter | 1 |
| 07***70 | O-Ring (Kit) | 1 |
| 07***04 | Bushing,Bushing | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Blade
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Blade (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 3 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 3 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 11 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Blade Cylinder
| 07***90 | O-Ring,(Dk029369-0020) (K2) | 1 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
| 07***57 | Seal, Dust | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Blade Frame (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 5 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 5 |
| 04***55 | Ring,Snap | 8 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Blade Tilt Cylinder (Power Tilt Mechanical Angle Dozer)(#26361-)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 04***25 | Ring,Snap (Kit) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Boom
| 01***12 | Bolt, Bolt,(No Need To Quick Shift) | 4 |
| 01***12 | Bolt,(With Cylinder Cover) | 2 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Boom (For Attachment)
| 07***75 | Fitting,Grease (Without Lub. Piping) | 1 |
| 20***10 | Boom Ass'Y | 1 |
| (0***2) | Bolt | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Boom (For Breaker)
| 07***75 | Fitting,Grease (Without Lub. Piping) | 1 |
| 20***10 | Boom Ass'Y | 1 |
| 20***11 | Boom Ass'Y | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Boom Cylinder (For Cab)
| 01***09 | Nut,(With Body Positioner) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Boom Cylinder (For Canopy)
| 01***09 | Nut,(With Body Positioner) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 07***80 | O-Ring,Hydraulic Oil Filter | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Boom Swing Bracket
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.03m3 (Mini 0.06m3) Width 250mm
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 2 |
| 09***14 | Nut | 2 |
| 10***11 | Tooth (Op) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.03m3 (Mini 0.06m3) Width 250mm With Hook (Except Japan)
| 01***25 | Screw,(Except Japan) | 1 |
| 01***04 | Nut,(For Air Conditioner Less) | 2 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.04m3 (Mini 0.07m3) Width 350mm
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 2 |
| 09***14 | Nut | 2 |
| 10***11 | Tooth (Op) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.04m3 (Mini 0.07m3) Width 350mm? With Hook (Except Japan)
| 01***25 | Screw,(Except Japan) | 1 |
| 01***04 | Nut,(For Air Conditioner Less) | 2 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.07m3 (Mini 0.12m3) Width 450mm
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 2 |
| 09***14 | Nut | 2 |
| 10***11 | Tooth (Op) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.07m3 (Mini 0.12m3) Width 450mm (Reinforced Type) (Op)
| 01***62 | Bolt | 6 |
| 02***60 | Bolt (Op) | 8 |
| 02***15 | Nut (Op) | 8 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.07m3 (Mini 0.12m3) Width 450mm With Hook (Except Japan)
| 01***25 | Screw,(Except Japan) | 1 |
| 01***04 | Nut,(For Air Conditioner Less) | 2 |
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.08m3 (Mini 0.13m3) Width 600mm
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 2 |
| 09***14 | Nut | 2 |
| 10***11 | Tooth (Op) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket 0.10m3 (Mini 0.17m3) Width 650mm
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 2 |
| 09***14 | Nut | 2 |
| 10***11 | Tooth (Op) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket Cylinder
| 01***09 | Nut,(With Body Positioner) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 07***65 | O-Ring,Injection Pump Case | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Bucket Link
| 01***85 | Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***85 | Bolt | 4 |
| 01***10 | Nut,(Without Air Conditioner) | 8 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Hydraulic Piping (Arm Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 5 |
| 01***32 | Washer,(With Auto Emergency Steering) | 5 |
| 20***10 | Hose | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Hydraulic Piping (Attachment Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 02***18 | O-Ring,Filter | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Hydraulic Piping (Blade Cylinder Line)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 08***20 | Grommet | 2 |
| 20***50 | Hose | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Hydraulic Piping (Boom Cylinder Line)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***30 | Bolt,(Not Used With Emergency Str.) | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Hydraulic Piping (Bucket Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
| 20***20 | Hose | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Hydraulic Piping (Swing Cylinder Line)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Hydraulic Piping (Tilt Cylinder Line) (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 3 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***65 | Bolt,(Except Japan) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Hypraulic Piping (Breaker Line)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
| 02***23 | O-Ring | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Long Arm
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment : Swing Cylinder
| 01***09 | Nut,(With Body Positioner) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
| 07***85 | O-Ring,(Without Fuel Level Gauge) | 1 |
Work Equipment Control System
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 2-Spool Control Valve (1/2)
| 01***10 | Bolt | 4 |
| 01***16 | Bolt (Op) | 4 |
| 01***20 | Bolt (Itl) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 2-Spool Control Valve (2/2)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 3-Spool Control Valve (1/2) (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 01***10 | Bolt | 6 |
| 01***16 | Bolt (Op) | 6 |
| 01***20 | Bolt (Itl) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 3-Spool Control Valve (1/2) (For Swing? Travel Speed? Blade)
| 01***10 | Bolt | 6 |
| 01***16 | Bolt (Op) | 6 |
| 01***20 | Bolt (Itl) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 3-Spool Control Valve (2/2) (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 3-Spool Control Valve (2/2) (For Swing? Travel Speed? Blade)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 4-Spool Control Value (1/2) (Swing? Attachment)
| 01***10 | Bolt | 8 |
| 01***16 | Bolt (Op) | 8 |
| 01***20 | Bolt (Itl) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 4-Spool Control Valve (2/2) (Swing? Attachment)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 6-Spool Control Valve (1/3)
| 01***10 | Bolt | 12 |
| 01***16 | Bolt (Op) | 12 |
| 01***20 | Bolt (Itl) | 6 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 6-Spool Control Valve (2/3)
| 01***08 | Nut (Op) | 1 |
| 07***11 | O-Ring (Kit) | 1 |
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : 6-Spool Control Valve (3/3)
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 3 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
| 70***70 | Spring | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydranlic Piping (Cooler) (For Breaker)
| 07***03 | Hose (Op) | 1 |
| 07***04 | Hose,(Without Add. Filter) | 1 |
| 14***30 | Spring,(L=42.4) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulc Piping (Swing Motor Line) (I.S.O Pattern) (Except Japan)
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Arm Cylinder Line) (Chassis Side)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 20***80 | Elbow | 1 |
| 20***30 | Hose | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Attachment Line) (Chassis Side)
| 01***40 | Bolt, Mount Master Brake Cylinder | 1 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Blade Cylinder Line) (Chassis Side)
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 04***64 | Pin,Snap (Welded) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Blade Cylinder Line) (For Power Tilt Mechanicalangle Dozer)(#29361-)
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 4 |
| 01***36 | Wahser-Spring, Washer,Spring (Without Towing Winch) | 4 |
| 04***64 | Pin,Snap (Welded) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Boom Cylinder) (Chassis Side)
| 01***20 | Bolt,(With Auto Emergency Steering) | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Breaker Line) (Chassis Side)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***35 | Bolt, Bolt, Mount Tubes To Switch And Work Pumps | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Bucket Cylinder Line) (Chassis Side)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 20***10 | Elbow | 1 |
| 20***20 | Elbow | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Drain)
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 1 |
| 07***04 | Hose, Tube To Torque Converter | 1 |
| 07***06 | Hose,(See Fig.6531-14) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Moment Limit System) (Without Cab Of Except Japan)
| 01***45 | Screw,(For Dual Tilt Dozer) | 2 |
| 01***13 | Washer,Spring(For Wiper Switch Earth) | 2 |
| 01***08 | Washer,(For Fixed Type Ripper) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve)
| 01***25 | Bolt,Without Revolution Sensor | 6 |
| 01***30 | Bolt,(For Mechanical Governor) | 12 |
| 01***50 | Bolt,(For Strengthened Cover) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve) (For Attachment)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
| 07***12 | Plug,(With Lock Valve) | 1 |
| 20***30 | Bracket | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Pump To Valve) (For Breaker)
| 01***20 | Bolt,(With Auto Emergency Steering) | 3 |
| 01***25 | Bolt,Without Revolution Sensor | 6 |
| 01***30 | Bolt,(For Mechanical Governor) | 12 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Return)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***11 | Nut,(With Under Mirror) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Return) (For Breaker)
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Swivel Joint To/From Travel Motor)
| 01***30 | Bolt,(Not Used With Emergency Str.) | 18 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 18 |
| 07***23 | O-Ring,(F4350-61a1b-29 ) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Swivel Joint To/From Travel Motor) (For 2nd Travel Speed) (Op)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 6 |
| 07***10 | Hose,(For Power Tilt Mech Angle) | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Tank To Pump)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***40 | Bolt,(With Air Conditioner) | 2 |
| 01***50 | Bolt (Kit) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Tilt Cylinder Line) (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
| 08***36 | Band,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Travel And Blade Line)
| 07***34 | O-Ring,(Not Used When (B) Spec.) | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 4 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Piping (Travel And Blade Line) (For 2nd Travel Speed) (Op)
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 5 |
| 07***15 | Elbow,(For 2nd Travel Speed) (Op) | 1 |
| 08***36 | Band,(For 2nd Travel Speed) (Op) | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Pump (1/3) (Except Japan)
| 01***70 | Bolt | 4 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 04***20 | Pin,Dowel (Welded) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Pump (2/3) (Except Japan)
| 01***70 | Bolt | 4 |
| 01***23 | Washer,(For Shipping) | 8 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Pump (3/3) (Except Japan)
| 01***23 | Washer,(For Shipping) | 4 |
| 01***32 | Washer, (Without Emergency Steering) | 4 |
| 70***30 | Ring,Seal | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Hydraulic Tank
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Swing Motor (1/2)
| 04***18 | Ring, Snap | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 07***12 | Plug,(With Lock Valve) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Swing Motor (2/2)
| 07***16 | O-Ring | 1 |
| 07***16 | Ring, Back-Up | 1 |
| 07***34 | O-Ring, O-Ring,Drain Plug? R.H. Half Tank | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Swivel Joint
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 04***25 | Ring, Retaining | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Swivel Joint (For Power Tilt Mechanical Angle Dozer)(#29361-)
| 01***35 | Bolt,(For Position Fixing) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 04***25 | Ring, Retaining | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (1/2) (For 2nd Travel Speed) (Op)(#24001-26000)
| 01***20 | Bolt, Mount Spool Covers | 6 |
| 04***93 | Ball,Steel | 2 |
| 06***01 | Bearing,Ball | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (1/2)(#24001-26000)
| 01***20 | Bolt (Itl) | 6 |
| 06***01 | Bearing,Ball | 1 |
| 06***03 | Bearing,Ball | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (1/3) (For 2nd Travel Speed) (Op)(#26001-)
| 04***15 | Ring, Snap | 1 |
| 06***02 | Bearing,Ball | 1 |
| 20***00 | Travel Motor Ass'Y,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (1/3)(#26001-29684)
| 04***12 | Ring,Snap (For Ripper) | 1 |
| 04***12 | Ring,Split, Ring-Snap | 1 |
| 06***04 | Bearing,Ball | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (1/3)(#29685-)
| 04***12 | Ring,Snap (For Ripper) | 1 |
| 04***12 | Ring,Split, Ring-Snap | 1 |
| 06***01 | Bearing,Ball | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (2/2) (For 2nd Travel Speed) (Op)(#24001-26000)
| 04***10 | Ring,Snap | 1 |
| 04***12 | Ring, Retaining | 3 |
| 07***07 | O-Ring - (K10) | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (2/2)(#24001-26000)
| 01***40 | Bolt,Reamer | 4 |
| 04***10 | Ring,Snap | 1 |
| 04***12 | Ring, Retaining | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (2/3) (For 2nd Travel Speed) (Op)(#26001-)
| 20***00 | Travel Motor Ass'Y,(For 2nd Travel Speed) (Op) | 2 |
| FU***35 | Ring,Snap | 1 |
| FU***59 | Carrier Sub Ass'Y | 1 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (2/3)(#26001-29684)
| 20***00 | Travel Motor Ass'Y,(See Fig.6435) | 2 |
| FU***35 | Ring,Snap | 1 |
| FU***-8 | Plug | 3 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (2/3)(#29685-)
| FU***35 | Ring,Snap | 1 |
| FU***16 | Ring,Slide | 1 |
| FU***11 | Seal,Floating | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (3/3) (For 2nd Travel Speed) (Op)(#26001-)
| 20***00 | Travel Motor Ass'Y,(For 2nd Travel Speed) (Op) | 2 |
| FU***90 | O-Ring | 10 |
| FU***16 | Plug | 6 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (3/3)(#26001-29684)
| 20***00 | Travel Motor Ass'Y,(See Fig.6435) | 2 |
| FU***90 | O-Ring | 3 |
| FU***90 | O-Ring | 2 |
Komatsu : Pc20-6(S/N 24001-Up) : Work Equipment Control System : Travel Motor (3/3)(#29685-)
| FU***90 | O-Ring | 2 |
| FU***90 | O-Ring | 2 |
| FU***30 | Screw | 7 |
PC20-6(S/N 24001-UP) serial number reference
On the PC20-6, the machine (PIN) plate is stamped on the frame near the front of the machine, on a flat area between or just ahead of the boom-cylinder mounts. This model uses a straight numeric serial, not the 3-letter PIN prefix used on later Komatsu excavators - read the number as a sequential count starting at 24001, with higher numbers indicating later production within the -6 series before the -7 series takes over its own range at 35001.
| Prefix | Identifies | Notes |
|---|---|---|
| 24001-UP (no letter prefix) | Standard PC20-6, all configurations in this serial block | This machine serial is a plain sequential number, not a 3-character alphanumeric PIN prefix. Factory numbering for this range begins at 24001. Parts and blade-fitment records tie the block through 35000, after which the PC20-7 line picks up its own range starting at 35001. Fitted with the Komatsu 3D84-1 series diesel (FA and GA suffix builds both seen in this range, rated about 19 kW (25.6 hp)). No documented standard-vs-long-undercarriage split within this block; treat any such variant as dealer-confirm only. |
Frequently asked questions
What engine does the Komatsu PC20-6 (S/N 24001-UP) run?
A Komatsu 3D84-1 series diesel (3D84-1FA and 3D84-1GA builds both appear in this serial range), a mechanically governed, mechanically injected 3-cylinder engine displacing 1.413 L and rated about 25.6 HP (19.1 kW) gross at 2,600 rpm. Cold starts use a thermostart intake-air heater instead of glow plugs.
What is the operating weight of the Komatsu PC20-6 (S/N 24001-UP)?
Roughly 2.6-2.93 t depending on configuration - canopy vs. cab, steel vs. rubber shoes, and counterweight all shift the figure. A standard canopy machine in this serial range runs close to 2,835 kg (6,251 lb).
What replaced the Komatsu PC20-6 (S/N 24001-UP)?
The PC20-7, starting at S/N 35001-UP (with a separate F20001-Up range), succeeded it in Komatsu's lineup. Later reduced-tail and micro-excavator variants - the PC20MR-1-K, PC20MRX-1, and PC20R-8 - extended the PC20 name further but are distinct machines rather than direct replacements.
What PC20-6(S/N 24001-UP) owners discuss
What's the reputation of the 3D84-1 engine in the PC20-6, and does it have any known starting quirks?
The PC20-6 runs Komatsu's 3-cylinder 3D84-1 series (3D84-1FA/3D84-1GA), a mechanically governed, mechanically injected diesel. Owners generally rate it a simple, dependable unit for its age with no controller or sensors to chase. The one recurring complaint is a hard, smoky cold start with a fuel smell. This engine uses a thermostart (an intake air heater fed by a small fuel reservoir) rather than conventional screw-in glow plugs, so there's nothing in the head to pull and test individually. A weak thermostart valve, a tired injection pump, or fuel timing drift can all produce the same hard-start symptom, so working through it by elimination is normal rather than a sign of a bigger problem.
How does the third-pump/breaker circuit work, and what should I check if flow isn't reaching the attachment?
The machine has a factory third-pump circuit for a hydraulic breaker or other single-acting attachment, fed through a selector switch on the left side of the operator's station that diverts oil from the third pump to the auxiliary line. It's a mechanical/hydraulic diverter, not an electronic mode. If a breaker isn't getting flow, check the selector linkage and diverter valve position before assuming a pump fault — a partially thrown switch is a common culprit. Any work opening up this circuit or resetting relief pressure should have your dealer verify settings before the machine goes back into service.
Owners describe the controls going "sloppy" over time. What's actually wearing out?
It's the mechanical pilot linkage between the control levers and the valve bank, not the valve or pump. Rod ends and pivot points wear with age and pick up play that feels like slop in every direction. Owners who've traced this down report the fix is new heim joints (rod ends) at the worn pivots, with light machining to true up mounting holes that have elongated. This is a linkage-wear issue on a purely mechanical control system — the PC20-6 predates joystick sensors entirely, so there's no electronic calibration involved. Have your dealer verify linkage travel and valve spool centering after any rework, since a mis-adjusted linkage can bias which function actuates first.
What kind of undercarriage and rubber-track life should a buyer expect?
Life varies enormously with ground conditions and upkeep rather than sitting at one fixed number. Abrasive or rocky ground combined with poor tension maintenance can cut life to a few hundred hours; clean conditions with regular tension checks and no sharp pivot turns on pavement can push well past a couple thousand. No dealer-grade figure specific to this serial range is published — judge a used machine by physical condition (rubber cracking, guide-lug wear, link and roller play) rather than by hours claimed.
Are there common final drive or travel/swing motor complaints?
The final drives use a simple plug-fill arrangement, but owners note the fill type and quantity aren't well documented outside the factory shop manual for this serial range — don't guess at oil type, confirm it before topping up. Beyond that, age-related seal weep at the travel motors and swing motor is the main wear point to look for on a used example; light film around the motor housings is common on a machine this old, but active dripping under load signals a seal job is due. Have your dealer verify final drive oil spec and fill level before refilling.
What electrical issues turn up on a machine this old?
There's no controller or fault-code system on this generation — it predates Komatsu's electronic monitor and PIN conventions entirely, so electrical complaints here mean wiring and switches, not sensors. As with other Komatsu equipment of similar vintage, the recurring themes are corroded or brittle harness connectors from age, a starter-interlock circuit routed through the alternator's third wire and charge-warning light that's more involved than it first looks, and starter relay or solenoid contacts that stick or drop voltage after decades of service. Chase these with a meter and wiring diagram rather than a code reader, since there's nothing to plug in.
What should I check before buying a used PC20-6(S/N 24001-UP)?
Cover the same fundamentals as any 1990s mini, plus a couple of model-specific points. Structure: check boom, arm, and frame for cracks or repair welds, especially near pin bosses. Undercarriage: inspect rubber tracks for cuts and dry rot, then rock the machine to check idlers, rollers, and links on the side you can't see from the ground. Hydraulics: look for weep at cylinder rod seals, the swing motor, and travel motors, and confirm the third-pump/breaker selector actually diverts flow if that circuit matters to you. Controls: run every lever through full travel feeling for the linkage play described above. Cold start: start it stone cold if at all possible — it's the best single test of injection pump and thermostart condition on this engine. Confirm local parts and service support too, since this model is old enough that not every dealer stocks parts off the shelf. Have your dealer verify hydraulic and structural condition before finalizing purchase on anything that looks marginal.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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