Komatsuhydraulic excavatorsmall ( - pc90)
Komatsu PC78UU-6(S/N 22001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu PC78UU-6 (S/N 22001-UP) is a compact hydraulic excavator designed for high productivity in tight environments. This series utilizes the Komatsu S4D95LE-3-A or 4D95LE-2 engine, delivering approximately 40.5 kW (54 HP) at 1850 rpm. The machine features a specialized 'Tight Tail' design to minimize rear swing impact and is available in various configurations including different bucket widths and regional emissions packages. It operates within a weight range of approximately 7670 kg (16910 lb), making it suitable for utility, demolition, and light construction applications.
Across its production life, the PC78UU-6 series introduced advanced hydraulic features like the pressure-compensated Closed-center Load Sensing System (CLSS) and HydrauMind technology to ensure precise actuator control. This machine remains a significant presence in the used market due to its durable engine architecture and the availability of widespread Komatsu parts. Its ability to balance compact dimensions with powerful digging force makes it a preferred choice for operators requiring maneuverability without sacrificing hydraulic performance.
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 PC78UU-6(S/N 22001-UP) specifications
Engine
| Model | S4D95LE-3-A (also documented as 4D9/95LE-2) |
| Net Power | 41 kW (54 HP) @ 1,850 rpm |
| Displacement | 199 cu in (3.3 L) |
| Cylinders | 4 |
Weights
| Operating Weight | 7,670 kg (16,910 lb) to 7,700 kg (16,976 lb) |
Dimensions
| Overall Length | 5,770 mm (18.93 ft) |
| Overall Height | 2,730 mm to 2,750 mm (8.96 ft to 8.99 ft) |
| Track Gauge | 1,870 mm (6.14 ft) |
| Track Length on Ground | 2,235 mm (7.33 ft to 7.34 ft) |
| Overall Track Width | 2,320 mm (7.62 ft) |
| Shoe Width | 450 mm (17.72 in) |
| Arm Length | 1,720 mm (5' 8") |
Performance
| Max Digging Depth | 4,200 mm (13.78 ft) |
| Max Digging Reach | 6,400 mm (20.99 ft) |
| Max Reach at Ground Level | 6,240 mm (20.47 ft) |
| Max Vertical Wall Depth | 3,160 mm (10.37 ft) |
| Swing Speed | 10 rpm |
| Travel Speed | 2.9/5.0 km/h (varies by configuration) |
| Bucket Capacity | 0.28 m³ (0.37 yd³) |
Forces
| Bucket Digging Force (ISO) | 6,250 kg |
| Arm Digging Force (ISO) | 3,960 kg |
Service capacities (summary)
| Fuel Tank | 125 L (33.1 gal) |
| Hydraulic System | 110 L (29.1 gal) |
| Engine Oil | 7.5 L (2 gal) |
| Radiator/Cooling System | 10.5 L (2.8 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
PC78UU-6(S/N 22001-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 7.5 L (2 gal) | 15w/40 E7 or E9 Engine Oil; 10w/30 Low Saps Engine Oil; 15w/30 Engine Oil; 10w/40 Fully Synthetic Engine Oil; SAE 40 Mono Grade HD 40; SAE 30 Four Stroke |
| Cooling system | 10.5 L (2.8 gal) | Komatsu Super-coolant AF-NAC; Antifreeze Blue Concentrate or Red OAT Antifreeze Coolant |
| Fuel tank | 125 L (33.1 gal) | Diesel fuel |
| Hydraulic system total AND hydraulic tank | 110 L (29.1 gal) | ISO 32 or 46 HLP, VG; Hydraulic Oil ISO 68; HVI 46 Oil (Higher Viscosity Index); 10w Hydraulic Oil; 20w Hydraulic Oil; 10w Multi-purpose/Transmission oil |
| Final drive (each) | Not specified | EP80w/90 GL4 or GL5; EP85w/140 GL5 Gear Transmission Oil |
| Grease (spec only) | Not specified | ASTM D975 No. 1 Grease; NLGI No. 2 |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu PC78UU-6(S/N 22001-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the PC78UU-6(S/N 22001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor hydraulic oil quality regularly to prevent pump cavitation. Use Komatsu-specified fluids such as HYDO or equivalent to maintain CLSS efficiency. Periodically check engine oil for signs of fuel dilution and inspect coolant for contamination. Analyzing the condition of swing machinery and final drive lubricants can identify early wear in the drivetrain before catastrophic gear failure occurs.
Corrective & Common Repairs
If hydraulic power decreases during travel or swing, verify hydraulic oil levels first. Address error code E03 immediately if the swing brake system fails. For electrical faults, inspect sensor connections and check for low battery voltage errors. When encountering hydraulic drift in work equipment cylinders, inspect seals and control valve components for internal leakage or pressure loss.
Overhaul & Rebuild Points
Plan major overhauls around the engine and hydraulic pump life cycles. Focus on inspecting the S4D95LE-3-A engine for compression pressure and blow-by levels. During hydraulic system rebuilds, evaluate the condition of the center swivel joint and PPC valves. Rebuilding the undercarriage should include replacing worn track rollers, sprockets, and idlers to restore machine stability and ground pressure specs.
Seasonal & Environment Servicing
In cold climates, ensure the cooling system is treated with appropriate antifreeze to prevent radiator damage. During high-dust operations, increase frequency of air cleaner inspections and radiator cleaning. For heavy demolition use, check all structural pins, bushings, and bucket teeth for impact fatigue. Always verify track tension adjustments after operating in muddy or soft terrain to prevent excessive undercarriage wear.
PC78UU-6(S/N 22001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-7441 | Cartridge,Fuel Filter | Fuel system service | Check fitment → |
| 21W-98-41720 | Plate,Air Cleaner (Double Element) | Air intake service | Check fitment → |
| 07000-02135 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 21W-60-41121 | Element,Hydraulic Oil | Hydraulic service | Check fitment → |
| 21W-04-41480 | Filter | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
PC78UU-6(S/N 22001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E10 | Engine controller power failure or engine control drive system circuit malfunction (engine stall) | ECM power connections, fuses, ground wires, or controller disruption | Inspect ECM power connections, fuses, and ground wires; consider controller replacement if necessary |
| E11 | Engine protection—output power reduced due to engine control system failure | High coolant temperature, low oil pressure, or air filter restriction | Check coolant temperature, oil pressure, and air filter status |
| CA115 | Engine crankshaft speed sensor failure or backup speed sensor failure | Broken sensor, wiring issue, connector corrosion, or voltage error at the pin connector | Replace the speed sensor and verify voltage at the pin connector |
| CA451 / CA452 | Common rail pressure sensor feedback value error (too high or too low) | Malfunction in the rail sensor or actual overpressure/underpressure condition | Diagnode the fuel rail pressure sensor or inspect pump lines |
| CA441 / CA442 | Battery voltage too low or too high | Alternator failure, battery failure, or voltage regulator issue | Replace the alternator or battery; check the voltage regulator |
| DW43KA / DW43KB | Travel speed solenoid valve circuit fault (open/short) | Electrical short or open circuit in the travel speed control solenoid | Replace the solenoid valve |
| DGH2KB | Hydraulic oil temperature sensor short circuit | Short circuit in the hydraulic oil temperature sensor | Replace the temperature sensor |
| AA10NX | Air cleaner clogging | Accumulated dust or debris in the air filter | Replace the air filter |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
PC78UU-6(S/N 22001-UP) attachments & work tools
Buckets
Standard capacity is 0.28 m³ (0.37 yd³). Typical bucket width for this class is 650 mm (25.6 in).
Hydraulic hammers
Maintenance intervals for hydraulic breakers are specified in the operation and maintenance manual. Specific breaker weight class not documented for this exact serial range — verify with your dealer.
Quick couplers
The machine is compatible with quick coupler systems for attachment versatility. Verify specific coupler type compatibility with local Komatsu distributor.
Thumbs/grapples
Attachment flow switching can be managed through the monitor. Specific thumb kit configurations are not documented for this exact serial range — verify with your dealer.
Rippers
Ripper attachment compatibility is not explicitly detailed in available factory spec sheets for this specific serial range.
Hydraulic-kit notes
The machine utilizes a HydrauMind closed-center system with load-sensing valves. High flow auxiliary hydraulics are available for providing precise attachment control.
All PC78UU-6(S/N 22001-UP) assemblies by section
Every catalogued assembly group for the Komatsu PC78UU-6(S/N 22001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
4d95le-2c Engine S/N 100005-Up
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Air Compressor Mounting (Bracket)(#105845-)
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
| 01***50 | Bolt,(See Fig.A4010-C3w6) | 1 |
| 08***10 | Bracket, Bucket Position Sensor | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Air Intake Connector(#105845-)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***35 | Bolt, Mount Bracket To Floor | 2 |
| 21***41 | Bracket | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Air Intake(#105845-)
| 01***65 | Bolt, Mount Tube To Divider Valve | 2 |
| 01***75 | Bolt (M10-1.50x75) | 6 |
| 09***50 | Liquid Gasket, Lg-7, 150g | 0 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Alternator (25a) (With Non Hardening Pulley)
| (6***0) | Alternator A. (25a),(See Fig.A6010-B1e1) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Alternator (25a) (With Non Hardening Pulley) (Inner Parts)
| 60***20 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***11 | Rear Bracket Ass'Y | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Alternator (35a) (Inner Parts)(#106662-)
| 60***10 | Alternator A. (35a) | 1 |
| ND***80 | Screw | 4 |
| ND***00 | Frame,Front | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Alternator (35a)(#106662-)
| (6***0) | Alternator A. (35a),(See Fig.A6010-B0a3) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Alternator Mounting (For 25a Alternator)
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
| 01***25 | Bolt - Relay Mounting | 3 |
| 01***60 | Bolt, Mounting | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Alternator Mounting (For 35a Alternator)(#106662-)
| 01***95 | Bolt (M10-1.50x95) | 1 |
| 01***25 | Bolt - Relay Mounting | 2 |
| 01***30 | Bolt,(Water Separator Spec.) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Camshaft And Gear
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 01***20 | Screw | 2 |
| 04***16 | Fitting Wedge | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cooling Fan
| 60***20 | Fan,Cooling | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cooling Fan Bolt(#104744-)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cooling Fan Spacer Bolt(#104942-)
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Crank Pulley (Non Hardening)(#100005-107086)
| 01***35 | Bolt | 1 |
| 62***10 | Washer | 1 |
| 62***20 | Pulley,Non Hardening | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Crank Pulley (Non Hardening)(#107087-)
| 01***45 | Bolt,Nylock | 1 |
| 61***31 | Plate | 1 |
| 62***21 | Pulley,Non Hardening | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Crankshaft(#100005-107086)
| 62***00 | Main Metal Ass'Y | 5 |
| 62***00 | Thrust Metal Ass'Y | 1 |
| 62***00 | Main Metal Ass'Y | 5 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Crankshaft(#107087-)
| 62***00 | Main Metal Ass'Y | 5 |
| 62***00 | Thrust Metal Ass'Y | 1 |
| 62***00 | Main Metal Ass'Y | 5 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cylinder Block Cover
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 2 |
| 01***14 | Bolt | 2 |
| 07***16 | Plug,(Without Air Compressor Type) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cylinder Block Gasket Kit
| 01***12 | Washer,Lock (Noise Suppression Spec.) (K2) | 1 |
| 07***18 | O-Ring,(See Fig.1601-29?1602-17) | 1 |
| 07***20 | O-Ring,Relief Valve | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cylinder Block(#100005-105844)
| 04***20 | Pin,Dowel (Welded) | 2 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***08 | Adapter Sleeves | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cylinder Block(#105845-)
| 04***20 | Pin,Dowel (Welded) | 2 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***08 | Adapter Sleeves | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cylinder Head Gasket Kit
| 07***40 | O-Ring,Water Pump Mount | 1 |
| 07***12 | Washer, Gasket,(Without Thermo Sensor) (K1) | 1 |
| 08***14 | Band,(For Additional Fuel Strainer) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Cylinder Head(#105845-)
| 02***04 | Plug, Pipe | 1 |
| 07***08 | Plug, Expansion | 4 |
| 07***10 | Plug, Expansion | 9 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Dust Indicator
| 08***01 | Indicator,Dust (Japanese-English) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Exhaust Connector
| 01***25 | Grub Screw | 4 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 2 |
| 61***80 | Gasket,Exhaust Manifold | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Exhaust Manifold
| 01***45 | Bolt, Bracket Mounting | 8 |
| 62***10 | Manifold,Exhaust | 1 |
| 62***10 | Gasket (K1) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fan Belt (For 25a Alternator)(#100333-)
| 04***47 | V-Belt,(With 25a Alternator) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fan Spacer(#104874-)
| 62***50 | Spacer | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Flywheel
| 01***30 | Bolt | 6 |
| 61***61 | Washer, Plain (14mm) | 6 |
| 62***93 | Gear,Ring | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Flywheel Housing(#105845-)
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 11 |
| 07***15 | Plug,(Used When Without Heater) | 1 |
| 61***32 | Seal? Rear (K2) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Front Cover (For 25a Alternator)(#105845-)
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Front Cover (For 35a Alternator)(#106662-)
| 01***20 | Bolt,See Fig. K4010-11a0 | 6 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***55 | Screw | 11 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Front Hanger
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 62***30 | Hanger,Front (W/O Corrosion Resistor) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Filter(#105845-)
| 01***65 | Screw | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 6 |
| 07***14 | Bolt,Joint | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Piping
| 01***12 | Bolt,(See Fig. K0210-16a0) | 2 |
| 01***25 | Screw | 2 |
| 62***10 | Tube,Injection? No.1 | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Pump (Feed Pump) (Inner Parts)(#105845-)
| DK***20 | Bolt, Joint | 1 |
| DK***60 | Feed Pump Ass'Y | 1 |
| DK***00 | Valve,Check | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Pump (Governor) (1/2) (Inner Parts)(#105845-)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
| DK***00 | Washer? 1.0mm | 0 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Pump (Governor) (2/2) (Inner Parts)(#105845-)
| DK***00 | Gasket | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Pump (Pump) (1/2) (Inner Parts)(#105845-)
| 62***50 | Injection Pump Ass'Y,(See Fig.A4010-B0a2) | 1 |
| DK***30 | Bearing | 0 |
| DK***20 | Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm | 0 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Pump (Pump) (2/2) (Inner Parts)(#105845-)
| DK***40 | Shim? 0.50mm, Shim, 0.50mm; Was Dk029311-0040 | 0 |
| DK***90 | Shim? 0.25mm, Shim, 0.25mm; Was Dk029311-0590 | 0 |
| DK***00 | Sleeve,Control | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Pump Lubricator
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
| 62***30 | Pipe,Oil | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Pump Mounting(#105845-)
| 01***20 | Bolt | 1 |
| 01***35 | Grub Screw | 4 |
| 01***12 | Bolt,(With Speedometer) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Injection Pump(#105845-)
| 62***50 | Injection Pump Ass'Y,(See Fig.A4010-B0a2) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Fuel Return
| 07***00 | Clip | 7 |
| 62***81 | Cap,(See Fig.0421-17) | 1 |
| 62***00 | Hose,(See Fig.0421-14? 0421a-14) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Glow Plug(#105845-)
| 60***70 | Glow Plug | 4 |
| 62***20 | Wire | 1 |
| 62***10 | Lead | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Head Cover
| 61***20 | Screw | 3 |
| 61***30 | Washer,(B) | 3 |
| 61***42 | Packing,Cylinder Head Cover | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Head Cover Related Parts(#105845-)
| 07***09 | Clamp,(See Fig. K0210-16a0) | 2 |
| 61***10 | Cap, Oil Filler | 1 |
| 61***30 | Tube, Oil Filler | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Heater Signal
| 60***61 | Signal,Heater | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Idler Gear
| 01***70 | Bolt,(For 75a Alternator) | 1 |
| 04***12 | Pin,Spring (See Fig.0201) | 1 |
| 62***31 | Shank | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Injection Nozzle(#105845-106126)
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
| 62***10 | Carrier | 4 |
| 62***30 | Washer | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Injection Nozzle(#106127-)
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
| 62***10 | Nozzle Holder | 1 |
| 62***10 | Carrier | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Muffler(#105845-)
| 01***20 | Bolt,(Forwarded Individually Parts) | 4 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***06 | Nut | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Name Plate And Caution (English) (Except Japan)(#105845-)
| 04***50 | Screw | 4 |
| 62***21 | Plate,Instruction | 1 |
| 62***20 | Name Plate | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Oil Filter(#105845-)
| 01***25 | Bolt - Relay Mounting | 14 |
| 01***35 | Bolt, Cover | 1 |
| 01***80 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Oil Level Gauge(#105845-)
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 1 |
| 01***65 | Bolt, Mount Tube To Divider Valve | 1 |
| 04***08 | Clip | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Oil Pan And Suction Tube
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 22 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Oil Pressure Switch
| 08***05 | Switch,Engine Oil Pressure | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Oil Pump
| 01***16 | Bolt, Mount Solenoid Valve | 4 |
| 01***25 | Bolt - Relay Mounting | 1 |
| 62***01 | Cover Ass'Y | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Piston
| 04***12 | Ring, Snap | 8 |
| 62***41 | Piston,(S) | 4 |
| 62***10 | Pin,Piston | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Plug(#105845-)
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Rear Hanger
| 62***10 | Hanger,Rear | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Rocker Arm
| 01***65 | Bolt,(For Alternator Bracket Mount) | 5 |
| 62***20 | Spring | 3 |
| 62***10 | Arm,Rocker | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Solenoid
| 01***14 | Bolt - Plate Mounting | 2 |
| 01***90 | Bolt,(For Large Fan) | 1 |
| 01***15 | Bolt | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Spare Parts(#100333-)
| 04***47 | V-Belt,(With 25a Alternator) | 1 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 60***10 | Cartridge,Engine Oil | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Starting Motor (3.0kw) (Inner Parts)
| 60***10 | Starting Motor Ass'Y,(3.0kw) | 1 |
| KD***40 | Pinion | 1 |
| KD***50 | Washer | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Starting Motor Mounting (3.0kw)
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 2 |
| 62***50 | Gasket,Starter | 1 |
| (6***0) | Starting Motor Ass'Y,(3.0kw) (See Fig.A6210-B0a1) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Tacho Drive Cover
| 01***16 | Bolt, Mounting Transmission Control Switch | 2 |
| 01***16 | Bolt | 2 |
| 07***50 | Ring, Seal - Between Sections | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Tappet
| 62***10 | Tappet | 8 |
| 62***10 | Tappet Rod | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Water Connector
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 62***30 | Connector,Water Outlet | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Water Pump Pulley (Non Hardening Pulley) (Except Japan)(#100008-)
| 62***51 | Pulley?Non Hardening,(With Tension Pulley) | 1 |
| 62***61 | Pulley?Non Hardening,(For Japan Pc200) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Water Pump(#105845-106016)
| 01***16 | Screw | 5 |
| 01***55 | Screw | 3 |
| 07***40 | O-Ring,Water Pump Mount | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : 4d95le-2c Engine S/N 100005-Up : Water Pump(#106017-)
| 01***16 | Screw | 5 |
| 01***55 | Screw | 3 |
| 07***40 | O-Ring,Water Pump Mount | 1 |
Accessory
Komatsu : Pc78uu-6(S/N 22001-Up) : Accessory : Cap And Overall
| 09***50 | Cap And Overall Kit,(Except Japan) | 1 |
| 09***57 | Cap,(Special Order) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Accessory : Spare Parts (Except Japan)
| 04***47 | V-Belt,(With 25a Alternator) | 1 |
| 07***35 | O-Ring,Cylinder Head | 1 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 2 |
Cooling System
Komatsu : Pc78uu-6(S/N 22001-Up) : Cooling System : Cooling (Drain)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***07 | O-Ring - (K7) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Cooling System : Cooling (Piping And Mounting)
| 01***16 | Bolt - Box Mounting | 2 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Cooling System : Cooling (Radiator And Oil Cooler)
| 01***12 | Bolt,(See Fig.0501) | 13 |
| 01***16 | Screw | 4 |
| 01***25 | Bolt,(With Corrosion Resistor) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Cooling System : Cooling (Seal Plate)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 5 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 5 |
| 21***30 | Sheet | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Cooling System : Fan Guard
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 3 |
| 21***11 | Guard | 1 |
Electrical System
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Battery And Mounting
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***45 | Bolt,(With Water Separator Type) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Battery And Mounting (Large Capacity)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***45 | Bolt,(With Water Separator Type) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Electrical (Horn And Relay)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Electrical (Main Harness) (1/2)
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***30 | Bolt,(With Body Positioner) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Electrical (Main Harness) (2/2)(#22001-23500)
| 01***12 | Bolt - Front Cover Mounting | 1 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***30 | Bolt - M8 X 30lg | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Electrical (Main Harness) (2/2)(#23501-)
| 01***12 | Bolt - Front Cover Mounting | 1 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***30 | Bolt - M8 X 30lg | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Electrical (Safety Equipment) (1/2)(#22001-23500)
| 01***12 | Bolt - Front Cover Mounting | 2 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 6 |
| 01***25 | Bolt,(Rear Attachment Less) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Electrical (Safety Equipment) (1/2)(#23501-)
| 01***12 | Bolt - Front Cover Mounting | 2 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 5 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Electrical (Safety Equipment) (2/2)(#22001-23500)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 08***21 | Tie, Nylon | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Electrical (Safety Equipment) (2/2)(#23501-)
| 01***12 | Bolt - Front Cover Mounting | 1 |
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Electrical System : Travel Alarm
| 01***00 | Bolt,(For Front Brake Release) | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
| 08***10 | Bracket, Bucket Position Sensor | 1 |
Engine Related Parts
Komatsu : Pc78uu-6(S/N 22001-Up) : Engine Related Parts : Air Cleaner (Double Element Type)
| 60***30 | Plate? Instruction,Count Sticker For Air Cleaner | 1 |
| 60***20 | Cover Ass'Y | 1 |
| 60***50 | Valve | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Engine Related Parts : Air Cleaner (Double)(#22001-23500)
| 01***25 | Bolt,(Rear Attachment Less) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Engine Related Parts : Air Cleaner (Double)(#23501-)
| 01***25 | Bolt,(Rear Attachment Less) | 4 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Engine Related Parts : Damper
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Engine Related Parts : Engine Mount
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 5 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***65 | Bolt,(Used With Pin Puller) | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Engine Related Parts : Fuel Control
| 01***16 | Bolt - Box Mounting | 2 |
| 01***20 | Bolt,(Without Air Con. Or Heater) | 2 |
| 01***50 | Capscrew | 2 |
Fuel Tank And Related Parts
Komatsu : Pc78uu-6(S/N 22001-Up) : Fuel Tank And Related Parts : Fuel Line
| 01***70 | Screw | 1 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Fuel Tank And Related Parts : Fuel Tank (Sensor And Mounting)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***45 | Bolt, Mounting Cranking Motor | 2 |
| 01***16 | Bolt | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Fuel Tank And Related Parts : Fuel Tank (Sub Tank)(#22001-22755)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Fuel Tank And Related Parts : Fuel Tank (Sub Tank)(#22756-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Fuel Tank And Related Parts : Fuel Tank (Tank)
| 01***16 | Bolt | 6 |
| 01***35 | Bolt | 6 |
| 01***20 | Screw | 4 |
Guard
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Counter Weight
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***20 | Bolt | 3 |
| 01***80 | Washer,(For R.H. Steering) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Counter Weight (For Slide Arm)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***20 | Bolt | 3 |
| 01***80 | Washer,(For R.H. Steering) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Counter Weight (Yellow)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***20 | Bolt | 3 |
| 01***80 | Washer,(For R.H. Steering) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Front Cover (Center Cover)(Yellow)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 7 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Front Cover (Tank Cover)(1/2)
| 01***20 | Bolt,(For Mono Lever Steering) | 10 |
| 01***30 | Bolt,(With Body Positioner) | 5 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Front Cover (Tank Cover)(2/2)
| 01***25 | Bolt | 4 |
| 01***20 | Bolt | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 9 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Front Cover (Tank Cover)(Yellow)(1/2)
| 01***20 | Bolt,(For Mono Lever Steering) | 10 |
| 01***30 | Bolt,(With Body Positioner) | 5 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Front Cover (Tank Cover)(Yellow)(2/2)
| 01***25 | Bolt | 4 |
| 01***20 | Bolt | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 9 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Hood (Bracket)
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***06 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Hood (Bracket)(Yelloe)
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***06 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Hood (Hood)
| 01***20 | Bolt,(For Mono Lever Steering) | 20 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 20 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Hood (Hood)(Yellow)
| 01***20 | Bolt,(For Mono Lever Steering) | 20 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 20 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Left Side Cover
| 01***50 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***40 | Screw | 7 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Left Side Cover (Yellow)
| 01***50 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***40 | Screw | 7 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Partition Cover
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Partition Cover (Yellow)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Rear View Mirror
| 01***20 | Bolt,(Without Air Con.) | 5 |
| 01***23 | Washer,(Without Air Con.) | 5 |
| 21***10 | Bracket | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Right Side Cover
| 01***20 | Bolt,(Without Air Con. Or Heater) | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Right Side Cover (Yellow)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Under Cover
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 11 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 13 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Guard : Under Cover (Yellow)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 11 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 13 |
Hydraulic System
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Actuator Line (Bucket? Arm And Offset)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
| 02***22 | Union | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Attachment Line (Plug)
| 02***10 | Elbow | 2 |
| 02***08 | O-Ring (Kit) | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Blade Line
| 02***A7 | Hose,Red-Black | 1 |
| 02***13 | Union | 1 |
| 02***09 | O-Ring,(F4350-61a0 -41 ) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Boom Line
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Delivery Line (Blade)
| 01***35 | Bolt,(For Fix Position) | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 02***04 | Plug, Pipe | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Drain Line
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 02***10 | Union | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Drain Line (Arm Crane)
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 02***10 | Union | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Hydraulic Tank
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Main Pump
| (7***0) | Pump Ass'Y | 1 |
| (7***6) | Pump Ass'Y | 1 |
| (7***5) | Pump Ass'Y | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Main Valve (With Service Valve And Attachment) (Blade)
| 01***25 | Bolt,(Rear Attachment Less) | 1 |
| 01***45 | Bolt, Mounting Cranking Motor | 4 |
| 01***30 | Bolt - M14 X 30lg | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Multi Patern (Bracket) (Backhoe)
| 01***85 | Bolt, Divider Valve Mounting | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
| 07***11 | Cushion, Hose | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Multi Patern (Plate) (Backhoe)
| 09***20 | Case? Plate | 1 |
| 21***20 | Plate | 1 |
| 22***70 | Plate | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Multi Patern (Valve) (Backhoe)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***80 | Bolt,(With Corrosion Resistor) | 3 |
| 01***90 | Capscrew | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Oil Cooler Line
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***80 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : P.P.C Main Line (1/3) (Backhoe)
| 02***21 | Hose,White | 1 |
| 02***08 | O-Ring (Kit) | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : P.P.C Main Line (1/4)
| 02***21 | Hose,White | 1 |
| 02***08 | O-Ring (Kit) | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : P.P.C Main Line (2/3) (Backhoe)
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***60 | Bolt, Mount | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : P.P.C Main Line (2/4)
| 01***20 | Bolt,(For Mono Lever Steering) | 5 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***60 | Bolt, Mount | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : P.P.C Main Line (3/3) (Backhoe)
| 02***10 | Union | 2 |
| 02***10 | Elbow | 10 |
| 02***12 | Elbow | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : P.P.C Main Line (3/4)
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : P.P.C Main Line (4/4)
| 02***10 | Union | 1 |
| 02***10 | Elbow | 12 |
| 02***12 | Elbow | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : P.P.C Main Line (4/4) (Arm Crane)
| 02***10 | Union | 2 |
| 02***10 | Elbow | 12 |
| 02***12 | Elbow | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Return Line
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Solenoid Valve
| 01***20 | Screw | 2 |
| 02***10 | Elbow | 5 |
| 02***08 | O-Ring (Kit) | 9 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Suction Line (Blade)
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***50 | Capscrew | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Swing Line
| 02***12 | O-Ring,(F2370-57a0 -49 ) | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 2 |
| 08***02 | Spiral Tube,Spiral | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Hydraulic System : Travel Line (Blade)
| 02***15 | O-Ring,(F5350-63a0 -27 ) | 4 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 4 |
| 08***01 | Conduit, Pvc | 1 |
Main/Revolving Frame And Related Parts
Komatsu : Pc78uu-6(S/N 22001-Up) : Main/Revolving Frame And Related Parts : Boom Foot Pin (Yellow)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 3 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Main/Revolving Frame And Related Parts : Revolving Frame
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Main/Revolving Frame And Related Parts : Revolving Frame (Yellow)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Marks And Plates
Komatsu : Pc78uu-6(S/N 22001-Up) : Marks And Plates : Marks And Plates (For Except Japan) (Yellow)
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 09***00 | Plate? Safety,Keep Out Of Turning Area | 1 |
| 09***00 | Plate? Name,(Limited Supply) | 1 |
Operator'S Compartment And Control System
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Air Conditioner (Hose)
| 01***30 | Screw | 2 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 7 |
| 01***35 | Bolt,(For Fix Position) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Air Conditioner (Hose) (Heater)
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Air Conditioner (Unit)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***95 | Bolt | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Cover (Cab)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***20 | Bolt,(Without Air Con.) | 4 |
| 01***10 | Screw,Spring | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (2-Attachment Control)
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Bolt | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Air Conditioner Unit And Hose)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***20 | Bolt,Sems | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Base)
| 01***20 | Bolt,Sems | 3 |
| 01***30 | Bolt,R.H | 8 |
| 01***35 | Bolt | 5 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Base) (For 2-Attachment)
| 01***20 | Bolt,Sems | 3 |
| 01***30 | Bolt,R.H | 4 |
| 01***35 | Bolt | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Blade Control)
| 01***25 | Bolt, Sems | 2 |
| 01***25 | Bolt | 2 |
| 01***40 | Bolt | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Console) (Lower) (L.H.)
| 01***16 | Screw | 4 |
| 01***16 | Screw | 2 |
| 01***12 | Screw,(For Fixed Type Ripper) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Console) (R.H.) (For 2-Attachment)
| 01***30 | Bolt,R.H | 4 |
| 01***08 | Screw | 5 |
| 01***12 | Capscrew | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Console) (R.H.) (M-Key)
| 01***30 | Bolt,R.H | 4 |
| 01***08 | Screw | 5 |
| 01***12 | Capscrew | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Console) (Under) (L.H.)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***45 | Bolt, Mounting Cranking Motor | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Console) (Upper) (L.H.)
| 01***12 | Screw | 4 |
| 01***16 | Screw | 10 |
| 01***20 | Screw | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Floor Frame) (Blade Spec.)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***26 | Clamp,Hose | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Floor Frame) (For 2-Attachment)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***26 | Clamp,Hose | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Floor Frame) (For Heater)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***26 | Clamp,Hose | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Foot Rest) (L.H.)
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Fuel Line)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 04***10 | Clip | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Harness Clamp) (Offset)
| 01***20 | Bolt,(For Mono Lever Steering) | 7 |
| 01***16 | Bolt | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 7 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Harness Clamp) (Offset) (For 2-Attachment)
| 01***20 | Bolt,(For Mono Lever Steering) | 7 |
| 01***16 | Bolt | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 7 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Installation Parts)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(With Gps Antenna Bracket) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Lever And Valve) (L.H.)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
| 01***08 | Screw,(For Tops Canopy) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Lever And Valve) (L.H.) (For 2-Attachment)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
| 01***08 | Screw,(For Tops Canopy) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Lever And Valve) (R.H.)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
| 01***08 | Screw,(For Tops Canopy) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Lever And Valve) (R.H.) (For 2-Attachment)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 4 |
| 01***25 | Bolt,See Fig. K4010-65a0 | 1 |
| 01***08 | Screw,(For Tops Canopy) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Offset Control)
| 01***20 | Bolt,Sems | 6 |
| 01***08 | Nut (Op) | 2 |
| 01***23 | Plain Washer | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (P?T Block) (For 2-Attachment)
| 01***45 | Screw | 4 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 4 |
| 02***1D | Union | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (P?T Block) (Offset)
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Piping) (L.H.)
| 20***90 | O-Ring | 4 |
| 21***11 | Hose? 1520mm,White | 2 |
| 21***31 | Hose? 1520mm,Green | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Piping) (R.H.)
| 20***90 | O-Ring | 4 |
| 21***71 | Hose? 2380mm,Yellow | 2 |
| 21***91 | Hose? 2420mm,Blue | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Ppc Clamp) (Blade Spec.)
| 01***20 | Bolt,(For Mono Lever Steering) | 10 |
| 01***20 | Bolt,Sems | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 10 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Travel Control)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***25 | Bolt | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Travel Control) (For 2-Attachment)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***25 | Bolt | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Travel Speed Pedal)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***08 | Washer | 1 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Wiring)
| 01***25 | Bolt, Sems | 2 |
| 01***20 | Screw, Machine | 2 |
| 01***23 | Washer,(Without Air Con.) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Frame (Wiring) (For 2-Attachment)
| 01***25 | Bolt, Sems | 2 |
| 01***20 | Screw, Machine | 2 |
| 01***23 | Washer,(Without Air Con.) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Mat
| 21***40 | Floor Mat | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Floor Mount (Cab)
| 01***45 | Washer,(For Travel Motor) (Not Show) | 4 |
| 07***25 | O-Ring,Corrosion Resistor | 8 |
| 21***70 | Bolt | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Accessories)
| 01***12 | Screw (2) | 10 |
| 01***16 | Screw | 6 |
| 01***16 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Am Radio)
| 01***16 | Bolt - Box Mounting | 8 |
| 01***25 | Screw | 4 |
| 01***16 | Screw | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Cab)
| 21***31 | Cab Ass'Y,(Std) | 1 |
| 21***32 | Cab Ass'Y,(Std) | 1 |
| 21***50 | Cab Ass'Y,(Door Sash) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Cover)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 1 |
| 01***20 | Bolt,(Without Air Con.) | 5 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Door Roller And Striker)
| 01***16 | Bolt - Box Mounting | 8 |
| 01***20 | Bolt,(Without Air Con.) | 5 |
| 01***25 | Bolt,(Without Gps Antenna Bracket) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Door)
| 01***16 | Screw | 2 |
| 01***16 | Screw,(With Payload Meter) | 2 |
| 21***30 | Grip | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Duct)
| 01***08 | Screw | 4 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 2 |
| 22***00 | Duct Ass'Y | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Front Lower Window)
| 01***16 | Screw,(With Payload Meter) | 8 |
| 01***16 | Screw | 2 |
| 01***23 | Washer | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Front Window)
| 01***16 | Screw | 8 |
| 01***20 | Bolt | 8 |
| 01***16 | Bolt,L.H | 10 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Galeo Mark)
| 09***30 | Plate? Mark,Mark? Galeo | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Installation Parts)
| 01***30 | Bolt,R.H | 6 |
| 01***13 | Nut,(For Adjustable Rod) | 3 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Komtrax Antenna)(#22001-23500)
| 01***20 | Bolt | 1 |
| 01***25 | Screw | 2 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Komtrax Antenna)(#23501-)
| 01***20 | Bolt | 1 |
| 01***32 | Washer,(Without Gps Antenna Bracket) | 1 |
| 04***08 | Clip | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Monitor System)
| 01***16 | Bolt - Box Mounting | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***16 | Screw | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Monitor System) (With Air Conditioner)
| 01***16 | Bolt - Box Mounting | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***16 | Screw | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Monitor System) (With Air Conditioner) (For Arm Crane)
| 01***16 | Bolt - Box Mounting | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***16 | Screw | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Pull Up)
| 01***12 | Screw,Sems | 9 |
| 01***16 | Screw,(With Payload Meter) | 2 |
| 01***16 | Screw | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Radio)
| 01***12 | Screw (2) | 4 |
| 01***25 | Screw | 8 |
| 01***16 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Roof Window)
| 01***23 | Washer | 18 |
| 21***50 | Bracket | 2 |
| 21***10 | Clear Plate | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Wiper And Room Lamp)
| 01***25 | Screw | 2 |
| 01***16 | Screw,(With Payload Meter) | 1 |
| 01***16 | Bolt,L.H | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Cab (Wiring)
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Operator'S Seat (Suspension)
| 01***20 | Bolt,(Without Air Con.) | 2 |
| 01***25 | Bolt | 2 |
| 01***23 | Washer,(Without Air Con.) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Seat Belt (50mm Wide)
| 09***01 | Bolt,(For Shipping) | 2 |
| 21***10 | Seat Belt Ass'Y | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Seat Belt (78mm Wide) (Automatic) (Except Japan)
| 01***32 | Washer | 1 |
| 09***01 | Bolt,(For Shipping) | 2 |
| 09***02 | Washer,(For Shipping) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Seat Belt (78mm Wide) (Except Japan)
| 09***01 | Bolt,(For Shipping) | 2 |
| 09***02 | Washer,(For Shipping) | 2 |
| 09***01 | Belt? Lap,(78mm Wide) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Operator'S Compartment And Control System : Window Washer
| 01***16 | Bolt - Box Mounting | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***23 | Washer,(With Auto Emergency Steering) | 2 |
S4d95le-3a-2 Engine S/N 100001-Up
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Air Compressor Mounting (Bracket)
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
| 01***50 | Bolt,(See Fig.A4010-C3w6) | 1 |
| 08***10 | Bracket, Bucket Position Sensor | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Air Intake
| 01***65 | Bolt, Mount Tube To Divider Valve | 2 |
| 01***75 | Bolt (M10-1.50x75) | 6 |
| 09***50 | Liquid Gasket, Lg-7, 150g | 0 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Air Intake Connector
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
| 07***09 | Clamp,(See Fig. K0210-16a0) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Alternator (25a) (With Non Hardening Pulley)
| (6***0) | Alternator A. (25a),(See Fig.A6010-B1e1) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Alternator (25a) (With Non Hardening Pulley) (Inner Parts)
| 60***20 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***11 | Rear Bracket Ass'Y | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Alternator Mounting (For 25a Alternator)
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
| 01***25 | Bolt - Relay Mounting | 3 |
| 01***60 | Bolt, Mounting | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Camshaft And Gear
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 04***16 | Fitting Wedge | 1 |
| 62***31 | Thrust Washer | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Cooling Fan
| 60***20 | Fan,Cooling | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Cooling Fan Bolt
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Cooling Fan Spacer Bolt
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Crank Pulley (Non Hardening)
| 01***45 | Bolt,Nylock | 1 |
| 61***31 | Plate | 1 |
| 62***21 | Pulley,Non Hardening | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Crankshaft
| 62***00 | Main Metal Ass'Y | 5 |
| 62***00 | Thrust Metal Ass'Y | 1 |
| 62***00 | Main Metal Ass'Y | 5 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Cylinder Block
| 04***20 | Pin,Dowel (Welded) | 2 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***08 | Adapter Sleeves | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Cylinder Block Gasket Kit
| 01***12 | Washer,Lock (Noise Suppression Spec.) (K2) | 1 |
| 07***18 | O-Ring,(See Fig.1601-29?1602-17) | 1 |
| 07***20 | O-Ring,Relief Valve | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Cylinder Block Plug
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Cylinder Head
| 02***04 | Plug, Pipe | 1 |
| 07***08 | Plug, Expansion | 4 |
| 07***10 | Plug, Expansion | 9 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Cylinder Head Gasket Kit
| 07***40 | O-Ring,Water Pump Mount | 1 |
| 07***15 | Gasket,(Hd325?Pc750?800?1800) (A5010) | 2 |
| 07***12 | Washer, Gasket,(Without Thermo Sensor) (K1) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Dust Indicator
| 08***01 | Indicator,Dust (Japanese-English) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Exhaust Connector
| 01***25 | Stud | 4 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 2 |
| 62***50 | Nut | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Exhaust Manifold
| 01***45 | Bolt, Bracket Mounting | 8 |
| 07***08 | Plug,(For W/O. Corrosion Resistor) | 1 |
| 62***40 | Manifold,Exhaust | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Fan Belt (For 25a Alternator)
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Fan Spacer
| 62***50 | Spacer | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Flywheel
| 01***30 | Bolt | 6 |
| 61***61 | Washer, Plain (14mm) | 6 |
| 62***93 | Gear,Ring | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Flywheel Housing
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 11 |
| 07***15 | Plug,(Used When Without Heater) | 1 |
| 61***32 | Seal? Rear (K2) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Front Cover
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***55 | Screw | 13 |
| 01***70 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Front Hanger
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 62***30 | Hanger,Front (W/O Corrosion Resistor) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Fuel Filter
| 01***65 | Bolt, Mount Tube To Divider Valve | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 6 |
| 07***14 | Bolt,Joint | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Fuel Injection Piping
| 01***12 | Bolt,(See Fig. K0210-16a0) | 2 |
| 01***25 | Screw | 2 |
| 62***10 | Tube,Injection? No.1 | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Fuel Injection Pump
| 62***50 | Injection Pump Ass'Y | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Fuel Injection Pump Lubricator
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
| 62***30 | Pipe,Oil | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Fuel Injection Pump Mounting
| 01***20 | Bolt | 1 |
| 01***35 | Grub Screw | 4 |
| 01***12 | Bolt,(With Speedometer) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Fuel Return
| 07***00 | Clip | 7 |
| 62***81 | Cap,(See Fig.0421-17) | 1 |
| 62***00 | Hose,(See Fig.0421-14? 0421a-14) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Glow Plug
| 60***70 | Glow Plug | 4 |
| 62***20 | Wire | 1 |
| 62***10 | Lead | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Head Cover
| 04***50 | Screw | 4 |
| 61***20 | Screw | 3 |
| 61***30 | Washer,(B) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Head Cover Related Parts
| 01***20 | Bolt,(Forwarded Individually Parts) | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 04***10 | Clip,(See Fig.0311a Or 0321) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Heater Signal
| 60***61 | Signal,Heater | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Idler Gear
| 01***70 | Bolt,(For 75a Alternator) | 1 |
| 04***12 | Pin,Spring (See Fig.0201) | 1 |
| 62***31 | Shank | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Injection Nozzle
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
| 62***10 | Nozzle Holder | 1 |
| 62***10 | Carrier | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Muffler
| 01***20 | Bolt,(Forwarded Individually Parts) | 4 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***06 | Nut | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Oil Filter
| 01***25 | Bolt - Relay Mounting | 14 |
| 01***35 | Bolt, Cover | 1 |
| 01***80 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Oil Level Gauge
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 1 |
| 01***65 | Bolt, Mount Tube To Divider Valve | 1 |
| 04***08 | Clip | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Oil Pan And Suction Tube
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 22 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Oil Pressure Switch
| 08***05 | Switch,Engine Oil Pressure | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Oil Pump
| 01***16 | Bolt, Mount Solenoid Valve | 4 |
| 01***25 | Bolt - Relay Mounting | 1 |
| 62***01 | Cover Ass'Y | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Piston
| 04***12 | Ring, Snap | 8 |
| 62***10 | Pin,Piston | 4 |
| 62***01 | Connecting Rod Ass'Y | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Plug
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Rear Hanger
| 62***10 | Hanger,Rear | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Rocker Arm
| 01***65 | Bolt,(For Alternator Bracket Mount) | 5 |
| 62***20 | Spring | 3 |
| 62***10 | Arm,Rocker | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Solenoid
| 01***14 | Bolt - Plate Mounting | 2 |
| 01***90 | Bolt,(For Large Fan) | 1 |
| 01***15 | Bolt | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Spare Parts
| 04***47 | V-Belt,(With 25a Alternator) | 1 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 60***10 | Cartridge,Engine Oil | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Starting Motor Mounting (3.0kw)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 2 |
| 04***10 | Clip,(With Accumulator) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Tacho Drive Cover
| 01***16 | Bolt, Mounting Transmission Control Switch | 2 |
| 07***50 | Ring, Seal - Between Sections | 1 |
| 61***51 | Plate, Cover | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Tamper Proof Kit
| 60***10 | Screw | 1 |
| 62***20 | Plate | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Tappet
| 62***10 | Tappet | 8 |
| 62***10 | Tappet Rod | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Turbocharger (Inner Parts)
| 62***50 | Turbocharger Ass'Y,(See Fig.A1530-B0a2) | 1 |
| 62***20 | Housing,Compressor | 1 |
| 62***10 | Housing,Turbine | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Turbocharger Lubricati0n Unit
| 01***16 | Bolt, Mounting Transmission Control Switch | 2 |
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Turbocharger Oil Piping
| 01***25 | Stud | 4 |
| 62***50 | Nut | 4 |
| 62***80 | Gasket,Turbocharger Gasket | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Water Connector
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 62***30 | Connector,Water Outlet | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Water Pump
| 01***16 | Screw | 5 |
| 01***55 | Screw | 3 |
| 07***40 | O-Ring,Water Pump Mount | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : S4d95le-3a-2 Engine S/N 100001-Up : Water Pump Pulley (Non Hardening Pulley)
| 62***51 | Pulley?Non Hardening,(With Tension Pulley) | 1 |
Service Kit And Component Parts
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Air Conditioner Unit (1/2)
| 22***60 | Aircon Unit A | 1 |
| TW***00 | Lever | 1 |
| TW***00 | Sensor | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Air Conditioner Unit (2/2)
| TW***20 | Pipe Ass'Y | 1 |
| TW***00 | Pressure Switch | 1 |
| TW***00 | Bracket | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Air Conditioner Unit (Evaporator)
| TW***00 | Insulator | 1 |
| TW***00 | O-Ring | 1 |
| TW***01 | Thermostat | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Arm Cylinder (Arm Crane Spec.) (With Drift Preventive Valve) (Inner Parts)
| 04***35 | Bowl, Check Valve | 9 |
| 07***05 | O-Ring, Steering Pump Mounting | 1 |
| 07***10 | O-Ring,(Y1620-01a1-12) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Arm Cylinder (Inner Parts)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 02***12 | O-Ring,(F2370-57a0 -49 ) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : B00m Offset Cylinder (Inner Parts)
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 07***05 | O-Ring, Steering Pump Mounting | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Blade Cylinder (Inner Parts)
| 07***25 | O-Ring,Cylinder Head | 1 |
| 07***30 | O-Ring,Housing | 1 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Boom Cylinder (Inner Parts)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 02***12 | O-Ring,(F2370-57a0 -49 ) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Bucket Cylinder (Inner Parts)
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Pump (1/4)(#22001-23500)
| 04***25 | Ring, Snap | 1 |
| 04***18 | Bolt,(With Main Clutch Cooler) (D60p) | 1 |
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Pump (1/4)(#23501-)
| 04***25 | Ring, Snap | 1 |
| 04***18 | Bolt,(With Main Clutch Cooler) (D60p) | 1 |
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Pump (2/4)(#22001-23500)
| 01***35 | Screw | 8 |
| 01***10 | Nut,(Fig.F2820-01a3-12) | 2 |
| 01***32 | Washer, (Without Emergency Steering) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Pump (2/4)(#23501-)
| 01***35 | Screw | 8 |
| 01***10 | Nut,(Fig.F2820-01a3-12) | 2 |
| 01***32 | Washer, (Without Emergency Steering) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Pump (3/4)(#22001-23500)
| 01***35 | Screw | 2 |
| 07***23 | O-Ring,(F4350-66a1 -1c ) | 1 |
| 20***10 | Bleeder | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Pump (3/4)(#23501-)
| 01***35 | Screw | 2 |
| 07***23 | O-Ring,(F4350-66a1 -1c ) | 1 |
| 20***10 | Bleeder | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Pump (4/4)(#22001-23500)
| 01***55 | Bolt | 4 |
| 01***35 | Screw | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Pump (4/4)(#23501-)
| 01***55 | Bolt | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 04***16 | Pin,(Dowel) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (1/25) (Blade)
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (10/25) (Blade)
| 07***23 | O-Ring; Was 07002-10823, O-Ring,(Not Shown) | 1 |
| 72***30 | Seat, Nozzle Spring | 3 |
| 72***61 | Bolt | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (11/25) (Blade)
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (12/25) (Blade)
| 07***05 | O-Ring (K1) | 1 |
| 07***05 | Ring,Back-Up | 1 |
| 07***23 | O-Ring,(F4350-66a1 -1c ) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (13/25) (Blade)
| 01***16 | Screw | 2 |
| 01***25 | Screw | 3 |
| 01***35 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (14/25) (Blade)
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 1 |
| 70***10 | O-Ring (Kit) | 1 |
| 70***20 | Ring, Back-Up | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (15/25) (Blade)
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
| 72***00 | Valve Ass'Y,Suction And Safety | 1 |
| (7***0) | Control Valve | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (16/25) (Blade)
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
| 72***00 | Valve Ass'Y,Suction And Safety | 1 |
| (7***0) | Control Valve | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (17/25) (Blade)
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
| 72***00 | Valve Ass'Y,Suction And Safety | 1 |
| (7***0) | Control Valve | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (18/25) (Blade)
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
| 72***00 | Valve Ass'Y,Suction | 2 |
| 72***00 | Valve Ass'Y,Suction | 10 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (19/25) (Blade)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 1 |
| 01***23 | Washer,(With Auto Emergency Steering) | 1 |
| 07***06 | O-Ring,(Not Shown) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (2/25) (Blade)
| 07***08 | O-Ring,(Tm8202-005) | 6 |
| 07***20 | O-Ring,(0202-007) | 3 |
| 07***20 | O-Ring,(Y1621-01a0-12) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (20/25) (Blade)
| 07***06 | O-Ring,(Not Shown) | 1 |
| 07***07 | O-Ring - (K10) | 2 |
| 07***23 | O-Ring; Was 07002-10823, O-Ring,(Not Shown) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (21/25) (Blade)
| 07***05 | O-Ring (K1) | 3 |
| 07***07 | O-Ring - (K10) | 2 |
| 07***23 | O-Ring,(F4350-66a1 -1c ) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (22/25) (Blade)
| 07***06 | O-Ring,(Not Shown) | 1 |
| 07***08 | O-Ring,(Tm8202-005) | 1 |
| 07***23 | O-Ring,(F4350-66a1 -1c ) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (23/25) (Blade)
| 07***08 | O-Ring,(Tm8202-005) | 2 |
| 07***20 | O-Ring,(0202-007) | 1 |
| 07***20 | O-Ring,(Y1621-01a0-12) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (24/25) (Blade)
| 01***35 | Screw | 6 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 6 |
| 07***06 | O-Ring,(Not Shown) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (25/25) (Blade)
| 07***23 | O-Ring,(F4350-65a0 -16 ) | 2 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 1 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (3/25) (Blade)
| 07***06 | O-Ring,(Not Shown) | 1 |
| 07***23 | O-Ring; Was 07002-10823, O-Ring,(Not Shown) | 1 |
| 57***20 | O-Ring | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (4/25) (Blade)
| 07***06 | O-Ring,(Not Shown) | 1 |
| 07***23 | O-Ring; Was 07002-10823, O-Ring,(Not Shown) | 1 |
| 57***20 | O-Ring | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (5/25) (Blade)
| 01***35 | Screw | 18 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 18 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (6/25) (Blade)
| 07***08 | O-Ring,(Tm8202-005) | 1 |
| 07***08 | Ring,Back-Up | 1 |
| 07***23 | O-Ring,(F4350-65a0 -16 ) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (7/25) (Blade)
| 07***23 | O-Ring,(F4350-66a1 -1c ) | 2 |
| 07***23 | O-Ring (K8) | 2 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (8/25) (Blade)
| 01***25 | Screw | 2 |
| 01***20 | Bolt | 2 |
| 01***55 | Bolt | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Main Valve (9-Valve) (9/25) (Blade)
| 07***06 | O-Ring,(Not Shown) | 8 |
| 07***00 | O-Ring,(Y1620-11a0a-11) | 6 |
| 70***60 | O-Ring (Itl) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Ppc Valve (For Attachment)
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 70***70 | Pilot Valve,(See Fig.Y1670-21a0) | 1 |
| 70***40 | Shim - 0.012 In. (0.30 mm) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Ppc Valve (For Blade)
| 01***25 | Screw | 2 |
| 70***00 | Pilot Valve | 1 |
| 70***40 | Shim - 0.012 In. (0.30 mm) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Ppc Valve (For Travel)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***55 | Screw | 2 |
| 01***12 | Screw | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Ppc Valve (For Work Equipment)
| 01***20 | Bolt,(Without Air Con. Or Heater) | 4 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
| 07***20 | O-Ring,(0202-007) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Shoe Bolt And Nut Service Kit
| 01***40 | Bolt (Y0320-K2) | 50 |
| 01***11 | Nut,(For Center Guard) | 50 |
| 11***21 | Nut? Shoe (Y0320-K3) | 50 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Swing Motor (1/3)
| 04***20 | Ring, Retaining | 1 |
| 07***55 | O-Ring,(F4350-62a1 -14 ) | 1 |
| 07***23 | O-Ring,(For 2nd Travel Speed) (Op) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Swing Motor (2/3)
| 07***16 | O-Ring,Suction And Relief Valve | 1 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 1 |
| 70***80 | Valve Ass'Y,Relief | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Swing Motor (3/3)
| 01***25 | Screw | 2 |
| 07***42 | O-Ring, Between Tube And Divider Valve | 1 |
| 07***07 | O-Ring - (K10) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Swivel Joint (Inner Parts)
| 01***30 | Bolt,(Water Separator Spec.) | 4 |
| 04***25 | Ring, Retaining | 1 |
| 07***85 | O-Ring,(For Snow Removing) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Track Link (78 Set) (Supply Parts)
| 10***73 | Bushing,Master | 4 |
| 10***71 | Seal,Dust? Regular? W-Type | 148 |
| 10***81 | Seal,Dust? Master? W-Type | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Travel Motor (1/3) (Hydraulic Motor) (1/2) (Gm09vn Type)
| 06***01 | Bearing | 1 |
| TZ***00 | Spring | 8 |
| TZ***00 | Piston Kit | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Travel Motor (2/3) (Hydraulid Motor) (2/2) (Gm09vn Type)
| 01***30 | Bolt | 6 |
| 07***14 | O-Ring,(F4350-61a0a-20 ) | 1 |
| 07***18 | O-Ring, Divider Valve Mounting | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Service Kit And Component Parts : Travel Motor (3/3) (Final Drive) (Gm09vn Type)
| 04***12 | Ring, Snap (4) | 6 |
| 04***52 | Ball,Detent | 1 |
| 07***08 | O-Ring,(Tm8202-005) | 2 |
Swing Circle And Related Parts
Komatsu : Pc78uu-6(S/N 22001-Up) : Swing Circle And Related Parts : Swing Circle
| 01***80 | Screw | 49 |
| 04***38 | Pin, Dowel | 2 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Swing Circle And Related Parts : Swing Machinery (Machnery)
| 04***12 | Ring, Snap (4) | 6 |
| 07***75 | Seal,Oil? Output Shaft | 1 |
| 07***12 | Plug,(For Backhoe) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Swing Circle And Related Parts : Swing Machinery (Related Parts)
| 01***10 | Bolt,(With Joy Stick Steering) | 12 |
| 01***32 | Washer,(With Auto Emergency Steering) | 12 |
| 02***15 | Union | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Swing Circle And Related Parts : Swing Machinery And Motor
| 01***45 | Bolt,(For 60ton Dump Body) | 9 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 9 |
| (2***0) | Swing Machinery A | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Swing Circle And Related Parts : Swivel Joint (Mount Parts) (With Blade)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 4 |
| 01***26 | Washer,Spring | 2 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
Travel And Lower Piping
Komatsu : Pc78uu-6(S/N 22001-Up) : Travel And Lower Piping : Final Drive
| 01***40 | Bolt,(For Slag Handling) (For Usa) | 28 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 28 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 28 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Travel And Lower Piping : Lower Hydraulic Piping (Blade Line)
| 02***1B | Elbow | 1 |
| 02***09 | O-Ring,(F4350-61a0 -41 ) | 1 |
| 02***12 | O-Ring,(F2370-57a0 -49 ) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Travel And Lower Piping : Lower Hydraulic Piping (Travel Line)
| 02***1D | Union | 2 |
| 02***15 | Union | 2 |
| 02***22 | Union | 4 |
Under Carriage
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Carrier Roller
| 01***85 | Bolt - Flange Mounting | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 04***15 | Ring, Snap | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Front Idler
| 07***38 | Ring, Seal - Between Sections | 2 |
| 07***08 | Plug (Kit) | 1 |
| 14***16 | Floating Seal Ass'Y,(For D60pl) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Idler Cushion (With Rubber Shoe)(#22001-23608)
| 01***75 | Bolt - Mount 1st Clutch Housing | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Idler Cushion (With Rubber Shoe)(#23609-)
| 01***75 | Bolt - Mount 1st Clutch Housing | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Idler Cushion(#22001-23608)
| 01***75 | Bolt - Mount 1st Clutch Housing | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Idler Cushion(#23609-)
| 01***75 | Bolt - Mount 1st Clutch Housing | 8 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 8 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Track Frame (Except Japan)
| 21***21 | Track Frame | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Track Frame (With Hook)
| 21***20 | Track Frame | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Track Frame Cover
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Track Guard And Tracd Roller Guard (With Steel Shoe)
| 01***35 | Capscrew - M14 (1)/(2) | 24 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 24 |
| 20***20 | Guard,Center | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Track Roller
| 01***65 | Bolt | 40 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 40 |
| 07***32 | O-Ring,Drain Plug? Main Clutch | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Under Carriage : Track Shoe (450mm Wide)
| 21***10 | Shoe,Rubber | 2 |
Work Equipment
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Arm (Arm And Pin) (Yellow)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Arm (Safety Equipment) (Yellow)
| 01***16 | Bolt - Box Mounting | 3 |
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***30 | Bolt,(With Body Positioner) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Arm Cylinder (Yellow)
| (7***0) | Cylinder Group,(Natural Yellow) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Blade
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 04***12 | Lock,(With Rain Cap) | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Blade Cylinder
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Boom (1st? 2nd Boom? 3rd Bracket And Sub Link) (Yellow)
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
| 07***00 | Fitting, Grease (Steering Cylinder) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Boom (1st?2nd Boom?3rd Bracket And Sub Link)(1att?Yellow)(#23501-)
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
| 07***00 | Fitting, Grease (Steering Cylinder) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Boom (Attachment Piping) (1att?Yellow)(#23501-)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***65 | Bolt,(Used With Pin Puller) | 6 |
| 01***70 | Bolt - Accumulator Mounting Bracket | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Boom (Hydraulic Line) (Yellow)
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Boom (Pin) (Yellow)
| 01***30 | Bolt,(Not Used When Towing Winch) | 24 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 24 |
| 04***12 | Lock,(With Rain Cap) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Boom (Safety Equipment) (Yellow)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 13 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Boom (Work Lamp And Cover) (Yellow)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Boom Cylinder (Yellow)
| (7***0) | Cylinder Group,(Natural Yellow) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket Cylinder (Yellow)
| (7***0) | Cylinder Group,(Natural Yellow) | 1 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket Link (Yellow)
| 01***20 | Bolt | 2 |
| 01***13 | Nut,(For Adjustable Rod) | 4 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 3 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket Pin (Yellow)
| 01***30 | Bolt | 1 |
| 01***50 | Bolt | 1 |
| 01***13 | Nut,(For Adjustable Rod) | 4 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket? 0.08m3 Width 450mm (Vertical Pin Type) (Yellow)
| 01***60 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 01***28 | Nut (Std) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket? 0.11m3 Width 550mm (Vertical Pin Type) (Yellow)
| 01***60 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 01***28 | Nut (Std) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket? 0.18m3 Width 650mm (Vertical Pin Type) (Yellow)
| 01***60 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 01***28 | Nut (Std) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket? 0.25m3 Width 750mm (Horizontal Pin Type) (Yellow)
| 01***60 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 01***28 | Nut (Std) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket? 0.25m3 Width 750mm (Vertical Pin Type) (Yellow)
| 01***60 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 01***28 | Nut (Std) | 6 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Bucket? 0.30m3 Width 760mm (Vertical Pin Type) (Yellow)
| 01***60 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
| 17***10 | O-Ring,Holder | 2 |
Komatsu : Pc78uu-6(S/N 22001-Up) : Work Equipment : Offset Cylinder (Yellow)
| (7***0) | Cylinder Group,(Natural Yellow) | 1 |
PC78UU-6(S/N 22001-UP) serial number reference
The PIN plate is riveted to the right-hand side of the cab on the lower frame, typically behind the front idler or beneath the operator's window. Cross-check the riveted plate against the serial number stamped into the chassis frame casting on the right-hand side. The serial number follows the model designation on the plate.
| Prefix | Identifies | Notes |
|---|---|---|
| 22001-UP | PC78UU-6 (Rubber Track) | Per the parts catalog for this serial range, the machine utilizes 450 mm width rubber tracks. Engine is the 4D95LE-2 or S4D95LE-3-A. |
Frequently asked questions
What engine is used in the PC78UU-6 (S/N 22001-UP)?
The machine is equipped with either a Komatsu 4D95LE-2 or an S4D95LE-3-A diesel engine, providing approximately 40.5 kW (54 HP) at 1850 rpm.
What is the operating weight of this excavator?
The operating weight varies by configuration but is documented at approximately 7670 kg (16910 lb).
What model replaced the PC78UU-6 series?
The provided documentation identifies the PC78US-8 as a subsequent model in the Komatsu excavator lineage.
What PC78UU-6(S/N 22001-UP) owners discuss
What engine is used in the Komatsu PC78UU-6 (S/N 22001-UP) and what are its performance specs?
The machine utilizes either a 4D95LE-2 or an S4D95LE-3 engine. The S4D95LE-3 configuration provides 40.5 kW (54 HP) at 1850 rpm.
What are the common hydraulic performance issues reported for this model?
Operators have reported premature relief valve activation and insufficient holding pressure specifically during boom operations, where the boom may relieve or lower during heavy lifts despite the stick having adequate power. Additionally, slow movement in functions such as travel, swing, boom, arm, and bucket can indicate a lack of hydraulic oil.
What are the known engine-related performance symptoms for this series?
Engine lugging or stalling during swing or bucket curl functions has been documented. If the exhaust turns black during these events, it suggests a hydraulic load issue; if not, it may indicate a fuel supply restriction. Common causes include clogged fuel filters, low fuel quality, or issues with the water separator/inlet path.
What electrical error codes or sensor-related issues should be monitored?
The monitor display may show error E03, indicating a swing brake system error. Users have also reported intermittent starting, dashboard failures, and random machine shutdowns related to faulty sensors or unstable power supplies.
What are the standard undercarriage specifications for the PC78UU-6 rubber track version?
The replacement rubber track for this serial range (220::01-UP) has a width of 450 mm (17.7 in).
What should be checked when buying a used Komatsu PC78UU-6?
Verify the exact serial number and check for hydraulic drift, engine smoke, or signs of pump failure. Inspect the fuel system for restrictions, specifically checking the tank outlet screen or inline strainers. For machines with individual valve covers, verify the condition of the inline fuel strainer. If the pump is not destroking, it may require a rebuild. Have your dealer verify.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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