Komatsu SA8V170-1C(S/N 10040-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu SA8V170-1C (S/N 10040-UP) is a heavy-duty diesel engine utilized in Komatsu's 170-series construction equipment, including the PC170LC excavator and WA800 wheel loader. This engine belongs to the SA8V170 series, succeeding the SA8V170-1A (S/N 10001-UP) and SA8V170-1B (S/N 10007-UP) variants. It is a six-cylinder, turbocharged, aftercooled diesel engine designed for high torque and durability in earthmoving applications. The machine class typically falls within the 20-ton excavator or heavy wheel loader category, with operating weights varying by configuration and attachment package. Production years for this specific serial range correspond to the mid-generation update of the 170-series line, bridging the gap between earlier Tier 2/3 models and later Tier 4 Final emissions-compliant units.
Across the SA8V170 series generations, the primary changes involved emissions compliance upgrades, fuel injection system refinements, and structural modifications to the cylinder head and cooling systems. The SA8V170-1C variant specifically addresses the transition to stricter environmental standards while maintaining the robust mechanical architecture of its predecessors. In the used and parts market, the SA8V170-1C remains significant due to its widespread installation in the PC170LC and WA800 fleets, which are still active in heavy construction and mining. Its modular design and commonality with other 170-series engines ensure a steady supply of aftermarket and genuine parts, making it a cost-effective powerplant for fleet maintenance and long-term operational viability.
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 SA8V170-1C(S/N 10040-UP) specifications
Engine
| Model | SA8V170-1C |
| Series/Generation | SA8V170-1 Series |
| Configuration | 8 cylinder, in-line, turbocharged diesel |
| Displacement | 23.2 liter (1,415.8 cu in) |
| Bore | 170.0 mm (6.69 in) |
| Stroke | 170.0 mm (6.69 in) |
| Gross Power | 391 kW (524 hp) @ 1800 rpm |
| Net Power | 391 kW (524 hp) @ 1800 rpm |
| Torque | 2650 Nm (1954 lbf-ft) @ 1300 rpm |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Engine Weight | 2740 kg (6040 lb) |
Dimensions
| Length | 1860 mm (73.2 in) |
| Width | 1240 mm (48.8 in) |
| Height | 2093 mm (82.4 in) |
Performance
| Travel Speeds | Not documented for this exact serial range — verify with your dealer |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu SA8V170-1C(S/N 10040-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the SA8V170-1C(S/N 10040-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA (Komatsu Oil Wear Analysis) at every 500-hour interval to monitor engine oil wear metals (iron, copper, lead, aluminum), coolant pH, and hydraulic fluid particle count. Track DEF levels daily to ensure Tier 4 Final SCR system efficiency. Analyze fuel dilution and soot levels in engine oil to predict injector or piston ring wear. Monitor coolant SCA concentration to prevent cavitation and corrosion in the SA8V170-1C's aluminum components. Early detection of silicon (dirt) or sodium (coolant) contamination in oil samples allows for proactive intervention before catastrophic engine failure occurs.
Corrective & Common Repairs
Address common SA8V170-1C issues such as turbocharger boost pressure leaks and EGR cooler clogging by inspecting intake manifolds and aftercoolers during 1,000-hour services. Replace worn hydraulic hoses and seals to prevent pressure drops in the main control valve system. Repair intermittent starting or shutdown faults by checking engine controller power circuits and sensor wiring. Inspect and replace worn track rollers, idlers, and sprockets to maintain undercarriage alignment and reduce drivetrain strain. Fix hydraulic leaks at cylinder rod seals and pump shafts to maintain operational efficiency and prevent fluid loss.
Overhaul & Rebuild Points
Plan for major engine overhaul at 10,000-15,000 hours, focusing on piston ring replacement, cylinder liner honing, and valve seat grinding. Inspect the crankshaft for wear and replace bearings if clearance exceeds specifications. Rebuild the hydraulic pump and control valves when flow rates drop below 90% of original capacity or internal leakage is detected. Overhaul the final drives and travel motors when gear backlash increases or seal failures cause oil contamination. Replace the turbocharger if shaft play or bearing noise indicates imminent failure, ensuring optimal air intake for the SA8V170-1C's combustion efficiency.
Seasonal & Environment Servicing
In cold climates, use low-temperature Komatsu Genuine Lubricants and ensure DEF fluid is protected from freezing. Check battery hold-downs and terminals for corrosion due to moisture exposure. In dusty environments, clean radiator and oil cooler fins daily to prevent overheating and replace air filter elements more frequently. In high-humidity or coastal areas, inspect electrical connectors for corrosion and apply dielectric grease. Drain water from the fuel separator daily to prevent microbial growth and fuel line blockages. Adjust track tension according to ground conditions to minimize undercarriage wear and improve machine stability.
SA8V170-1C(S/N 10040-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 6164-71-6500 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 07002-03334 | O-Ring, At Transmission Filter | Scheduled service item | Check fitment → |
| 6165-61-2310 | Element | Scheduled service item | Check fitment → |
| 6165-61-2330 | Element | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
SA8V170-1C(S/N 10040-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor failure | Broken sensor, wiring issue, or connector corrosion | Replace the speed sensor and verify the voltage at the pin connector |
| CA111 | Internal engine controller fault | ECM hardware failure | Replace or reprogram the ECM |
| CA122 | Intake air pressure sensor feedback voltage too high | Sensor malfunction or wiring issue | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure sensor feedback voltage too low | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA451 | Common rail pressure sensor feedback value too high | Fuel rail pressure sensor malfunction or actual overpressure | Diagnose the fuel rail pressure sensor or pump lines |
| CA452 | Common rail pressure sensor feedback value too low | Fuel rail pressure sensor malfunction or low pressure condition | Diagnose the fuel rail pressure sensor or pump lines |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration, engine load cycle, or operator misuse |
| CA441 | Battery voltage too low | Alternator failure, battery failure, or voltage regulator issue | Replace the alternator or battery; check the voltage regulator |
| CA442 | Battery voltage too high | Alternator failure or voltage regulator issue | Replace the alternator or battery; check the voltage regulator |
| AA10NX | Air cleaner clogging | Dirty or blocked air filter element | 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.
SA8V170-1C(S/N 10040-UP) attachments & work tools
Engine Identification & Series
The SA8V170-1C engine is designated for serial numbers 10040 and up. It is distinct from the SA8V170-1A (S/N 10001-10318) and SA8V170-1B (S/N 10007-Up) variants. The engine is an 8-cylinder, turbocharged diesel used in Komatsu heavy equipment such as the WA800-1 wheel loader.
Work Tool Families
Compatible work tools include standard shovel buckets, heavy-duty rock buckets, and specialized attachments for wheel loaders. For the WA800-1 class, typical bucket capacities range from 3.0 to 4.2 cubic yards. Specific bucket sizes vary by configuration and series.
Coupler & Mounting Systems
Attachments utilize standard wheel loader mounting interfaces. Compatibility requires verification against the specific machine model (e.g., WA800-1) rather than the engine code alone. Quick coupler options are available but depend on the factory-installed hydraulic circuit.
Hydraulic Kit Requirements
Auxiliary hydraulic tools require a factory-installed auxiliary hydraulic kit. The engine's hydraulic output must match the tool's flow and pressure requirements. Specific kit part numbers are not documented in the provided sources; verify with the dealer.
Factory Configurations & Guarding
Factory options include ROPS/FOPS cabs and standard lighting packages. Guarding for the engine compartment and hydraulic lines is standard for the WA800-1 series. Emissions configurations vary by region and model year.
All SA8V170-1C(S/N 10040-UP) assemblies by section
Every catalogued assembly group for the Komatsu SA8V170-1C(S/N 10040-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Accessory
Komatsu : Sa8v170-1c(S/N 10040-Up) : Accessory : Air Compressor And Mounting
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 4 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Accessory : Air Compressor Piping(#10040-10292)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Accessory : Air Compressor Piping(#10293-)
| 01***35 | Bolt,(Without Auto Priming System) | 1 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Accessory : Air Compressor(#10040-10292)
Komatsu : Sa8v170-1c(S/N 10040-Up) : Accessory : Air Compressor(#10293-10436)
| 61***05 | Air Compressor Ass'Y | 1 |
| DK***20 | Connecting Rod A | 2 |
| DK***90 | Washer,Air Compressor | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Accessory : Air Compressor(#10437-)
| 61***05 | Air Compressor Ass'Y | 1 |
| DK***90 | Washer,Air Compressor | 2 |
| DK***00 | Bearing | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Accessory : Front Accessory Drive
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 8 |
| 04***30 | Seal, Dust | 1 |
Cooling System
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cooling System : Cooling Fan And Fan Drive
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 6 |
| 01***60 | Bolt, Trunnion Cap | 6 |
| 01***35 | Bolt,(For Pedal Steering) | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cooling System : Corrosion Resistor
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
| 01***10 | Nut,(Fig.F2820-01a3-12) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cooling System : Tension Pulley And Mounting
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
| 01***45 | Bolt (M12-1.75x45) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cooling System : Water Pump And Mounting
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 14 |
Cylinder Block
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Camshaft And Cam Follower(#10040-10250)
| 01***40 | Bolt,(Dust And Dirt Protection) | 16 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 16 |
| 04***38 | Key | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Camshaft And Cam Follower(#10251-)
| 01***40 | Bolt,(Dust And Dirt Protection) | 16 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 16 |
| 04***38 | Key | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Crankshaft
| 01***00 | Bolt (M12-1.75x100) | 6 |
| 01***90 | Bolt | 1 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Cylinder Block Cover(#10040-10394)
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 11 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 51 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Cylinder Block Cover(#10395-10442)
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 11 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 49 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Cylinder Block Cover(#10443-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 11 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 56 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Cylinder Block(#10040-10515)
| 01***18 | Bolt | 8 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Cylinder Block(#10516-)
| 01***18 | Bolt | 8 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Flywheel And Flywheel Housing(#10040-10252)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 14 |
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Flywheel And Flywheel Housing(#10253-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 10 |
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Gear Case And Cover(#10040-10252)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***90 | Bolt,For Reversible Fan | 12 |
| 01***55 | Screw | 7 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Gear Case And Cover(#10253-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***90 | Bolt,For Reversible Fan | 12 |
| 01***55 | Screw | 7 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Muffler Support
| 01***45 | Bolt,(Cold Terrain Spec.) | 10 |
| 01***05 | Bolt | 4 |
| 01***05 | Bolt | 4 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Oil Pan(#10040-10515)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 54 |
| 01***80 | Bolt, Mount Strainer Flange | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Oil Pan(#10516-)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 53 |
| 01***80 | Bolt, Mount Strainer Flange | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Piston And Connecting Rod
| 02***13 | Pin, Dowel | 2 |
| 61***60 | Piston Ring Ass'Y, Per Cylinder | 8 |
| 61***10 | Pin,Piston | 8 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Block : Timing Gear
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***35 | Bolt,(Without Auto Priming System) | 6 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
Cylinder Head
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Air Cleaner And Mounting
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 16 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 16 |
| 07***79 | Clamp,(Except Japan) | 8 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Air Intake Manifold And After Cooler
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 32 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 3 |
| 01***75 | Bolt,(For D57sr) | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Cylinder Head(#10040-10301)
| 07***28 | O-Ring,(For Transmission Screen) | 2 |
| 07***08 | Plug (Kit) | 5 |
| 07***11 | Plug,(For Shipping) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Cylinder Head(#10302-)
| 07***28 | O-Ring,(For Transmission Screen) | 2 |
| 07***08 | Plug (Kit) | 4 |
| 07***11 | Plug,(For Shipping) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Exhaust Manifold And Turbocharger
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 16 |
| 01***35 | Bolt, M10x1.5x35 | 4 |
| 01***45 | Capscrew | 4 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Exhaust Manifold Cover (1/2)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 6 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 31 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 13 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Exhaust Manifold Cover (2/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 28 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***20 | Capscrew - M10 | 3 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Muffler And Connection
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 14 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***30 | Bolt,(For France Noise Suppression) | 7 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Rocker Arm And Housing
| 01***45 | Bolt,(Cold Terrain Spec.) | 8 |
| 01***55 | Bolt,(For France Noise Suppression) | 8 |
| 01***90 | Bolt,For Reversible Fan | 48 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Rocker Arm Housing Cover
| 01***55 | Bolt,(For Suction? Reversible Fan) | 40 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 40 |
| 01***16 | Washer,(With Shoe Slip Control) | 40 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Tubrocharger(#10437-)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***16 | Bolt | 8 |
| 04***08 | Pin, Dowel | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Turbocharger(#10040-10292)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***16 | Bolt | 8 |
| 01***16 | Bolt | 8 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Turbocharger(#10293-10436)
| 01***16 | Bolt,(For Slag Handling) | 4 |
| 01***16 | Bolt | 8 |
| 04***08 | Pin, Dowel | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Water Line Air Vent Piping(#10040-10515)
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
| 01***16 | Washer,(With Shoe Slip Control) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Water Line Air Vent Piping(#10516-)
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 3 |
| 01***16 | Washer,(With Shoe Slip Control) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Water Manifold And Thermostat
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 9 |
| 01***30 | Bolt,(For France Noise Suppression) | 10 |
| 01***95 | Bolt,(For Reversible Fan) | 6 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Water Piping (1/2)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 6 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Cylinder Head : Water Piping (2/2)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
Electrical System
Komatsu : Sa8v170-1c(S/N 10040-Up) : Electrical System : Alternator (50a) (Except Japan)
| 60***80 | Alternator A. (50a) | 1 |
| SD***10 | Heat Sink Ass'Y(-) | 2 |
| SD***00 | O-Ring | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Electrical System : Alternator And Mounting
| 01***10 | Bolt, Mount Filler Tube | 1 |
| 01***20 | Bolt | 2 |
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Electrical System : Alternator Drive
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 8 |
| 04***30 | Seal, Dust | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Electrical System : Starting Motor (11kw)
| 60***40 | Starting Motor A.,(11kw) | 2 |
| 60***41 | Starting Motor A.,(11kw) | 2 |
| SD***X0 | Pinion Clutch Ass'Y | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Electrical System : Starting Motor And Mounting
| 01***45 | Bolt,(For Slag Handling) | 6 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
| 01***48 | Washer,Spring? Single Flange | 6 |
Fuel System
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Auto Priming System (1/3)(#10040-10261)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Auto Priming System (1/3)(#10262-10432)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Auto Priming System (1/3)(#10433-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Auto Priming System (2/3)(#10040-10261)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 5 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Auto Priming System (2/3)(#10262-10432)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 5 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Auto Priming System (2/3)(#10433-)
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 3 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Auto Priming System (3/3)(#10040-10432)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***50 | Bolt,(For Trimming Dozer) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Auto Priming System (3/3)(#10433-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***50 | Bolt,(For Trimming Dozer) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Automatic Timer
| 61***40 | Timer Ass'Y | 1 |
| DK***50 | Shim? 0.6mm | 0 |
| DK***20 | Flyweight | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Control Linkage(#10040-10246)
| 01***12 | Bolt,(Without R.P.C.U.) | 1 |
| 01***16 | Bolt (Welded) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Control Linkage(#10247-)
| 01***16 | Bolt (Welded) | 2 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***35 | Bolt,(Without Auto Priming System) | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Feed Pump
| 61***00 | Fuel Pump Ass'Y | 1 |
| EB***27 | Valve | 1 |
| EB***16 | Cover | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Filter And Piping
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#10040-10515)
| DK***20 | Shim? 0.05mm | 0 |
| DK***00 | Bolt | 1 |
| DK***20 | Link | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#10516-)
| DK***20 | Shim? 0.05mm | 0 |
| DK***20 | Link | 1 |
| DK***00 | Nut | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#10040-10515)
| DK***80 | Shim? 0.5mm | 0 |
| DK***00 | Bolt | 1 |
| DK***20 | Cover | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#10516-)
| DK***80 | Shim? 0.5mm | 0 |
| DK***40 | Gasket,Air Compressor | 2 |
| DK***20 | Spring,Governor | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#10040-10515)
| 61***10 | Injection Pump Ass'Y,(See Fig.0451) | 1 |
| 61***11 | Injection Pump Ass'Y | 1 |
| DK***00 | Screw | 8 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#10516-)
| 61***11 | Injection Pump Ass'Y | 1 |
| DK***70 | Seal,Oil | 1 |
| DK***00 | Gear | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#10040-10515)
| DK***00 | Bolt | 1 |
| DK***00 | Screw | 8 |
| DK***20 | Valve,Delivery | 8 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#10516-)
| DK***00 | Screw | 8 |
| DK***20 | Valve,Delivery | 8 |
| DK***20 | Tappet | 8 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump And Piping (1/2)
| 01***30 | Bolt | 5 |
| 01***35 | Bolt | 3 |
| 01***35 | Bolt,(Without Auto Priming System) | 3 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump And Piping (2/2)
| 01***30 | Bolt | 16 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 7 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Injection Pump Drive
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Nozzle And Spill Pipe
| 61***10 | Holder Ass'Y | 1 |
| 61***01 | Nozzle Holder Ass'Y | 8 |
| 61***21 | Nozzle | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Pump Drive And Feed Pump
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Fuel System : Fuel Return Piping
| 01***16 | Bolt,(For Slag Handling) | 6 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
Lubricating Oil System
Komatsu : Sa8v170-1c(S/N 10040-Up) : Lubricating Oil System : Lubricating Cooling Valve
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
| 07***40 | O-Ring,Cooling Valve | 1 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Lubricating Oil System : Lubricating Oil Cooler
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***25 | Bolt,(Without Auto Priming System) | 6 |
| 01***50 | Bolt,(For Trimming Dozer) | 4 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Lubricating Oil System : Lubricating Oil Filter
| 01***30 | Bolt,Radio Controlled Slag Handling | 4 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 2 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 6 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Lubricating Oil System : Lubricating Oil Piping
| 01***50 | Bolt,(For Trimming Dozer) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Lubricating Oil System : Lubricating Oil Pump And Suction Pipe
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***30 | Bolt,(For France Noise Suppression) | 10 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 3 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Lubricating Oil System : Lubricating Safety Valve
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
| 61***40 | Shim Ass'Y,(Not Shown) | 4 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Lubricating Oil System : Mechanical Pump And Piping
| 01***16 | Bolt (Welded) | 6 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***19 | Washer,(Not Used With Ventilator) | 6 |
Komatsu : Sa8v170-1c(S/N 10040-Up) : Lubricating Oil System : Turbocharger Lubricating Oil Piping
| 01***16 | Bolt,(For Slag Handling) | 10 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 4 |
Tool And Kit
Komatsu : Sa8v170-1c(S/N 10040-Up) : Tool And Kit : Gasket Kit
| 01***12 | Washer,(F2320-63a2 -13 ) | 1 |
| 02***75 | O-Ring,(For Japan) (K1) | 8 |
| 04***12 | Lock (K2) | 1 |
SA8V170-1C(S/N 10040-UP) serial number reference
The PIN plate is typically located on the emissions/export plate riveted near the engine bay or behind the cab on export-market machines built since approximately 2003. The 3-character prefix is the first three characters of the 17-character ISO PIN (e.g., KMT), identifying the manufacturer (Komatsu).
| Prefix | Identifies | Notes |
|---|---|---|
| SA8V170-1C | Engine | SA8V170-1C engine family. Serial range 10040-UP. No 3-character PIN prefixes found in source text for this specific engine serial range. Source text lists machine model prefixes (PC, D, WA, etc.) but does not link specific 3-character PIN prefixes to the SA8V170-1C engine serials 10040-UP. Verify with dealer for specific machine PIN prefixes associated with this engine serial range. |
Frequently asked questions
What engine does the Komatsu SA8V170-1C use?
The Komatsu SA8V170-1C is a six-cylinder, turbocharged, aftercooled diesel engine. It is part of the SA8V170 series, designed for heavy-duty construction applications with high torque output and durability.
What is the operating weight of the Komatsu SA8V170-1C machine?
The operating weight varies by configuration and series. For the PC170LC excavator class, it typically ranges from 17,000 to 19,000 kg (37,480 to 41,885 lbs). For the WA800 wheel loader class, it can exceed 86,800 kg (191,360 lbs). Exact weight depends on attachment, counterweight, and track shoe configuration.
What replaced the Komatsu SA8V170-1C?
The SA8V170-1C was succeeded by later generations of the SA8V170 series and eventually by SAA6D140E and SAA6D107E engines in newer Tier 4 Final/Stage V compliant machines. The specific successor depends on the equipment model (e.g., PC170LC-11 or WA800-8) and regional emissions requirements.
What SA8V170-1C(S/N 10040-UP) owners discuss
What are the typical powertrain and hydraulic behaviors associated with the Komatsu SA8V170-1C engine series?
What undercarriage and wear patterns are typical for machines powered by this engine series?
What are the known quirks or common issues with the SA8V170-1C engine per the series?
What are the common electrical and sensor issues reported for this machine type?
What should be checked when buying a used Komatsu SA8V170-1C machine?
What is a critical safety-related fix to verify with a dealer for this engine series?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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