Komatsuengine(no series)
Komatsu SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER))
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu SA6D170-A-1E (S/N 10569-UP) is a single-turbocharger diesel engine belonging to the SA6D170 series, manufactured by Komatsu since 2017. It features a 23.1-liter displacement with six cylinders and a 170mm bore. This powertrain is typically installed in heavy-class construction machinery, including the WA700 wheel loader and HD465-5 dump truck, with operating weights ranging from 55,400 kg to 97,100 kg depending on the host machine configuration. The engine delivers power outputs between 550 and 700 hp, meeting Tier 2 and EU Stage II emissions standards.
Across the SA6D170 lineage, generations evolved from the S6D170-1 to the SA6D170-A-1 and the SAA6D170E series, incorporating water-cooled aftercoolers and single-turbocharger configurations for the 10569-UP serial range. The machine remains critical in the used and parts market because its robust architecture supports high-horsepower applications in large excavators and haul trucks. The availability of comprehensive overhaul kits and the engine's presence in widely used models like the WA700 and HD465 ensure a steady demand for replacement components and rebuild services.
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 SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) specifications
Engine
| Model | SA6D170-A-1E (S/N 10569-UP, Single Turbocharger) |
| Gross Power | 568 kW @ 2000 rpm (762 hp) |
| Net Power | 550 to 700 hp (varies by configuration/series) |
| Displacement | 16.86 L (1028.8 cu in) |
| Cylinders | 6 |
| Bore x Stroke | 170 mm x 170 mm (6.69 in x 6.69 in) |
| Aspiration | Turbocharged, after-cooled, cooled EGR |
| Emissions Tier | EU Stage II / Tier 2 |
Weights
| Engine Weight | 1,700 kg (3,748 lb) |
Dimensions
| Engine Dimensions (L x W x H) | 2250 mm x 1600 mm x 1850 mm (88.6 in x 63.0 in x 72.8 in) |
Performance
| Engine Speed | 2000 rpm |
Service capacities (summary)
| 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 |
| 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 |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA fluid analysis at every major service interval to monitor wear metals and contaminants. Track engine oil for iron, copper, and lead levels to detect internal wear. Analyze hydraulic fluid for ISO cleanliness and water content to protect pumps and valves. Test coolant for pH, SCA concentration, and glycol levels to prevent corrosion and overheating. Monitor transmission and final drive oils for viscosity changes and oxidation. Early detection of silicon (dirt) or sodium (coolant) in oil prevents catastrophic engine failure.
Corrective & Common Repairs
Address intermittent starting or random shutdowns by inspecting the engine controller power supply and sensor wiring. Replace worn fuel delivery components if power loss or increased fuel usage occurs. Inspect the turbocharger and air intake system for restrictions causing reduced output. Check the PC-EPC and LS-EPC solenoid valves for circuit faults indicated by error codes. Replace worn belts and hoses during the 2000-hour service to prevent sudden failure. Verify all electrical connections to ensure stable power distribution to the ECU.
Overhaul & Rebuild Points
Perform out-of-frame overhaul when wear measurements indicate piston, ring, or bearing limits are reached. Use dedicated SA6D170 overhaul kits containing pistons, rings, and gaskets for complete rebuilds. Inspect the cylinder block and head for cracks or distortion during disassembly. Replace the turbocharger if boost pressure or oil consumption exceeds specifications. Check the fuel injection system for nozzle wear or clogging affecting combustion. Ensure all structural welds on the boom and stick are inspected during major machine overhauls.
Seasonal & Environment Servicing
Adjust maintenance frequency based on dust exposure by cleaning or replacing the air filter more often. Drain the fuel water separator daily in humid or wet conditions to prevent injector damage. Check the cooling system for debris buildup in the radiator and oil cooler fins before summer operation. Verify DEF levels and system functionality for Tier 4 compliance in regulated regions. Inspect undercarriage rollers and sprockets for wear in abrasive environments. Ensure battery terminals are clean and tight to prevent starting issues in cold weather.
SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-8291 | Cartridge,Fuel Filter | Fuel system service | Check fitment → |
| 07000-02075 | O-Ring,Steering Oil Filter | Lubrication service | Check fitment → |
| 6127-61-2971 | O-Ring,Oil Cooler Element | Lubrication service | Check fitment → |
| 08036-01414 | Clip,(For Add.Filter)(Except Japan) | Scheduled service item | Check fitment → |
| 600-651-1250 | Element | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) 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 voltage at the pin connector |
| CA111 | Engine controller internal fault | ECM critical internal failure | Replace or reprogram the ECM |
| CA441 | Battery voltage too low | Alternator failure, battery degradation, or voltage regulator issue | Replace the alternator or battery; check the voltage regulator |
| CA451 | Common rail pressure sensor feedback value too high | Malfunction in the rail sensor or actual overpressure condition | Diagnose the fuel rail pressure sensor or pump lines |
| AA10NX | Air cleaner clogging | Dirty or blocked air filter element | Replace the air filter |
| B@BCNS | Engine coolant overheating | Radiator blockage, fan belt failure, or low coolant level | Check radiator fins, fan belt, and coolant level |
| E10 | Engine controller power failure | ECM power connection loss or ground wire fault | Inspect ECM power connections, fuses, or ground wires |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration and engine load cycle |
| CA122 | Intake air pressure sensor feedback voltage too high | Sensor malfunction or wiring issue | Verify the intake pressure sensor and wiring |
| CA689 | Engine speed sensor fault | Sensor failure or signal phase abnormality | Replace the corresponding sensor or inspect the sensor gap |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) attachments & work tools
Wheel Loader Attachments
The Komatsu WA700 wheel loader, powered by the SA6D170-A-1E engine (S/N 10569-UP), utilizes a standard quick coupler system for bucket interchange. Factory specifications list a standard bucket capacity of 9.2 m³ (12.0 cu yd) for this model class. Other compatible work tool families include rock buckets and light material buckets, sized to match the loader's lift capacity and hydraulic flow.
Excavator Attachments
The SA6D170-A-1E engine is not documented for use in the PC1250-7 or PC1250-8 excavator series in the provided sources; those models are associated with the SAA6D170E-3 and SAA6D170E-5 engines respectively. For the WA700 class, compatible attachments include heavy-duty digging buckets and grading buckets. Hydraulic circuit configurations for these tools vary by configuration/series and require verification with the specific machine's hydraulic schematic.
Dozer Attachments
The provided source text does not list any dozer models (such as D375A or D475A) that utilize the SA6D170-A-1E engine (S/N 10569-UP). Dozer blade capacities and mounting systems for the 170-series engine class are not documented in the available data. Verify blade options with your dealer for specific machine configurations.
Hydraulic Kit Requirements
Work tools for the WA700 class require specific hydraulic flow and pressure settings to operate auxiliary functions such as tilt and quick couplers. Factory spec sheets indicate that hydraulic kit arrangements vary by configuration/series. Consult the operation and maintenance manual for the exact flow rates and pressure settings required for specific attachments.
Factory Guarding Options
The WA700 wheel loader offers factory-installed guarding options for the ROPS/FOPS cab and hydraulic lines to protect against falling material. Specific guarding configurations for the SA6D170-A-1E engine (S/N 10569-UP) are not detailed in the provided sources. Contact your Komatsu dealer for the complete list of available guarding packages for this serial range.
All SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) assemblies by section
Every catalogued assembly group for the Komatsu SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Accessory
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Accessory : Air Compressor And Mounting (Single Turbocharger)(#10277-)
| 01***25 | Bolt,(Without Auto Priming System) | 6 |
| 01***40 | Bolt,(For Position Fixing) | 4 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Accessory : Air Compressor Piping (Single Turbocharger)(#10277-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***50 | Bolt (Kit) | 1 |
| 01***20 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Accessory : Air Compressor(#10277-)
| 02***22 | Bolt | 2 |
| 02***70 | Bolt | 4 |
| 02***32 | Bolt | 6 |
Cooling System
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cooling System : Cooling Fan And V-Belt(#10277-)
| 04***82 | V-Belt Set | 1 |
| 60***20 | Fan,Cooling | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cooling System : Corrosion Resistor And Piping (Single Turbocharger)(#10277-)
| 01***35 | Bolt,(Without Auto Priming System) | 1 |
| 01***50 | Bolt,(For Trimming Dozer) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cooling System : Tension Pulley And Mounting (Single Tubrocharger)(#11683-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cooling System : Tension Pulley And Mounting (Single Turbocharger)(#10277-11682)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cooling System : Water Pump And Mounting(#10277-)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 5 |
Cylinder Block
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Camshaft And Cam Follower(#10277-)
| 01***32 | Washer,(Not Used With Emergency Str.) | 12 |
| 04***38 | Key | 1 |
| 04***12 | Ring, Snap (4) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Crankshaft(#10277-)
| 04***28 | Key, Plain Woodruff | 1 |
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 61***20 | Washer | 6 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Cylinder Block (Single Turbocharger)(#10277-10445)
| 01***18 | Bolt | 6 |
| 01***30 | Bolt,(For France Noise Suppression) | 6 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Cylinder Block (Single Turbocharger)(#10446-)
| 01***18 | Bolt | 6 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Cylinder Block Cover (Single Turbocharger)(#10277-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(For France Noise Suppression) | 16 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Flywheel And Flywheel Housing (Single Turbocharger)(#10277-)
| 01***20 | Bolt,(Large Capacity Type) (Std) | 8 |
| 01***30 | Bolt,(For France Noise Suppression) | 3 |
| 01***45 | Bolt, Mount Bracket | 4 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Front Cover And Front Support (Single Turbocharger)(#10277-)
| 01***16 | Bolt,(For Slag Handling) | 12 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***85 | Bolt, Control Valve Mounting | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Gear Case Cover And Gear (Single Turbocharger)(#10277-)
| 01***60 | Bolt, Trunnion Cap | 10 |
| 01***35 | Bolt,(For Pedal Steering) | 6 |
| 01***40 | Bolt,(Not Used With Cab) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Oil Pan (Cold Terrain Spec.)(#10277-11682)
| 01***30 | Bolt,(For France Noise Suppression) | 49 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***90 | Bolt (M10-1.50x90) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Oil Pan (Cold Terrain Spec.)(#11683-)
| 01***30 | Bolt,(For France Noise Suppression) | 49 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***90 | Bolt (M10-1.50x90) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Oil Pan(#10277-11682)
| 01***30 | Bolt,(For France Noise Suppression) | 49 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***90 | Bolt (M10-1.50x90) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Oil Pan(#11683-)
| 01***30 | Bolt,(For France Noise Suppression) | 49 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***90 | Bolt (M10-1.50x90) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Block : Piston And Connecting Rod(#10277-)
| 02***13 | Pin, Dowel | 4 |
| 61***60 | Piston Ring Ass'Y, Per Cylinder | 6 |
| 61***40 | Piston | 6 |
Cylinder Head
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Air Intake Manifold And After Cooler (Single Turbocharger)(#10277-)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 12 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***35 | Bolt,(Without Auto Priming System) | 4 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Cylinder Head (Single Turbocharger)(#10277-11682)
| 07***28 | O-Ring,(For Transmission Screen) | 2 |
| 07***08 | Plug (Kit) | 3 |
| 07***11 | Plug,(For Shipping) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Cylinder Head (Single Turbocharger)(#11683-)
| 07***28 | O-Ring,(For Transmission Screen) | 2 |
| 07***08 | Plug (Kit) | 3 |
| 07***11 | Plug,(For Shipping) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Exhaust Manifold And Turbocharger (Single Turbocharger)(#10277-)
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***65 | Bolt | 2 |
| 01***90 | Bolt | 22 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Rocker Arm And Housing (Single Turbocharger)(#10277-)
| 01***45 | Bolt,(Cold Terrain Spec.) | 6 |
| 01***55 | Bolt,(For France Noise Suppression) | 6 |
| 01***90 | Bolt,For Reversible Fan | 36 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Rocker Arm Housing Cover (Single Turbocharger)(#10277-)
| 01***55 | Bolt,(For Suction? Reversible Fan) | 27 |
| 01***00 | Bolt (M10-1.50x100) | 2 |
| 01***20 | Bolt, Mount Main Relief Valve | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Turbocharger (Single Turbocharger)(#10277-)
| 01***25 | Bolt (M6-1.00x25) | 4 |
| 04***50 | Screw | 2 |
| 07***95 | O-Ring (Kit) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Water Manifold And Thermostat (Single Turbocharger)(#10277-11209)
| 01***12 | Bolt,(Without R.P.C.U.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 7 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Water Manifold And Thermostat (Single Turbocharger)(#11210-)
| 01***12 | Bolt,(Without R.P.C.U.) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 7 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Cylinder Head : Water Piping (Single Turbocharger)(#10277-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 5 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 10 |
| 01***65 | Bolt,(For Suction Fan)(4d130-1d) | 2 |
Electrical System
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Electrical System : Alternator (50a) (Single Turbocharger)(#10277-10439)
| 60***40 | Alternator A. (50a),(See Fig.0641) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Electrical System : Alternator (50a)(#10440-)
| 60***81 | Alternator A. (50a) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Electrical System : Alternator And Mounting (Single Turbocharger)(#10277-)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Electrical System : Alternator Drive(#10277-)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 04***24 | Pin, Spring | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Electrical System : Starting Motor (7.5kw)(#10277-)
| 60***10 | Starting Motor Ass'Y,(7.5kw) | 2 |
| KD***20 | Magnetic Switch Assembly | 1 |
| KD***40 | Spring,Spring | 4 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Electrical System : Starting Motor And Mounting(#10277-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***20 | Bolt,(Used When Towing Winch) | 2 |
| 01***45 | Bolt,(For Slag Handling) | 6 |
Fuel System
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Automatic Timer(#10794-)
| 61***90 | Timer Ass'Y | 1 |
| DK***50 | Shim? 0.6mm | 0 |
| DK***20 | Seat,Spring | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Cold Starting Aid(#10277-)
| 07***18 | Tube,(For Chinese) | 1 |
| 58***10 | Cable,Control | 1 |
| 61***00 | Starter,Quick | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Filter(#10277-)
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
| 07***08 | Plug,(Without Auto Priming System) | 1 |
| 07***12 | Plug,(For Shipping) (Not Shown) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Coupling)(#10794-)
| 61***80 | Injection Pump A.,(See Fig.0451) | 1 |
| 61***81 | Injection Pump A.,(See Fig.0451a) | 1 |
| DK***00 | Washer | 8 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Feed Pump)(#10794-11644)
| 61***80 | Injection Pump A.,(See Fig.0451) | 1 |
| DK***00 | Valve,Check | 4 |
| DK***20 | Bolt,Joint | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Feed Pump)(#11683-)
| 61***81 | Injection Pump A.,(See Fig.0451a) | 1 |
| DK***00 | Valve,Check | 4 |
| DK***20 | Bolt,Joint | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#10794-11644)
| 61***80 | Injection Pump A.,(See Fig.0451) | 1 |
| DK***20 | Shim? 0.05mm | 0 |
| DK***40 | Ring,Snap | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#11645-11682)
| 61***81 | Injection Pump A.,(See Fig.0451a) | 1 |
| DK***20 | Shim? 0.05mm | 0 |
| DK***40 | Ring,Snap | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#11683-)
| DK***20 | Shim? 0.05mm | 0 |
| DK***40 | Ring,Snap | 1 |
| DK***00 | Nut | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#10794-11644)
| 61***80 | Injection Pump A.,(See Fig.0451) | 1 |
| DK***80 | Shim? 0.5mm | 0 |
| DK***00 | Gasket | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#11645-11682)
| 61***81 | Injection Pump A.,(See Fig.0451a) | 1 |
| DK***80 | Shim? 0.5mm | 0 |
| DK***00 | Gasket | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#11683-)
| DK***80 | Shim? 0.5mm | 0 |
| DK***00 | Gasket | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#10794-11644)
| 61***80 | Injection Pump A.,(See Fig.0451) | 1 |
| 61***81 | Injection Pump A.,(See Fig.0451a) | 1 |
| DK***00 | Screw | 6 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#11645-11682)
| 61***81 | Injection Pump A.,(See Fig.0451a) | 1 |
| 61***82 | Injection Pump A | 1 |
| DK***90 | Pump Ass'Y | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#11683-)
| 61***82 | Injection Pump A | 1 |
| DK***30 | Shim? 0.14mm | 0 |
| DK***30 | Bearing | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#10794-11644)
| 61***80 | Injection Pump A.,(See Fig.0451) | 1 |
| DK***00 | Bolt | 1 |
| DK***00 | Screw | 6 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#11645-11682)
| 61***81 | Injection Pump A.,(See Fig.0451a) | 1 |
| DK***00 | Bolt | 1 |
| DK***00 | Screw | 6 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#11683-)
| DK***00 | Screw | 6 |
| DK***20 | Valve,Delivery | 6 |
| DK***20 | Tappet | 6 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump And Mounting (Single Turbocharger)(#10277-)
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 5 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump Linkage(#10277-10793)
| 01***20 | Bolt | 4 |
| 01***03 | Nut,L.H. Thread | 1 |
| 01***04 | Nut,(For 50a Alternator) | 3 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump Piping (1/2) (Single Turbocharger)(#10277-)
| 01***30 | Bolt | 8 |
| 01***35 | Bolt | 1 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump Piping (2/2) (Single Turbocharger)(#10277-10439)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Injection Pump Piping (2/2) (Single Turbocharger)(#10440-)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 1 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Fuel Nozzle And Spill Pipe(#10277-)
| 07***13 | Tube,(See Fig.0421-13) | 5 |
| 07***14 | Tube, Spill | 5 |
| 07***80 | Clip | 10 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Fuel System : Stop Motor And Mounting(#10794-)
| 01***16 | Bolt (Welded) | 3 |
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***30 | Bolt | 1 |
Lubricating Oil System
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Lubricating Oil System : Lubricating Oil Cooler (Cold Terrain Spec.)(#10277-)
| 01***16 | Bolt (Welded) | 12 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***25 | Bolt,(Without Auto Priming System) | 6 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Lubricating Oil System : Lubricating Oil Cooler(#10277-)
| 01***16 | Bolt (Welded) | 12 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 3 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Lubricating Oil System : Lubricating Oil Filter(#10277-)
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
| 01***90 | Bolt,For Reversible Fan | 5 |
| 01***36 | Washer,Radio Controlled Slag Handling | 8 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Lubricating Oil System : Lubricating Oil Pump And Suction Pipe (Single Turbocharger)(#10277-11682)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***70 | Bolt, Spacer | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Lubricating Oil System : Lubricating Oil Pump And Suction Pipe (Single Turbocharger)(#11683-)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***70 | Bolt, Spacer | 2 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Lubricating Oil System : Mechanical Pump And Piping(#10277-)
| 01***16 | Bolt (Welded) | 2 |
| 01***12 | Bolt | 4 |
| 01***10 | Washer,Spring | 4 |
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Lubricating Oil System : Turbocharger Lubricating Oil Piping (Single Turbocharger)(#10277-)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***35 | Bolt,(Without Auto Priming System) | 2 |
Tool And Kit
Komatsu : Sa6d170-A-1e(S/N 10569-Up (Single Turbocharger)) : Tool And Kit : Gasket Kit (Single Turbocharger)(#10277-)
| 02***91 | O-Ring (Kit) | 4 |
| 02***16 | O-Ring (Kit) | 2 |
| 06***04 | Seal,Bearing (K4) | 2 |
SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) serial number reference
The engine serial number plate is located on the left side of the engine block, typically near the injection pump or on a metal plate affixed to the valve cover area. Read the prefix (e.g., SA6D170-A-1E) to identify the engine model and configuration, then verify the serial number falls within the 10569-UP range for the single turbocharger variant.
| Prefix | Identifies | Notes |
|---|---|---|
| SA6D170-A-1E | Single Turbocharger | Engine model prefix for the SA6D170-A-1E configuration. Serial range 10569-UP applies to this specific single-turbo variant. Varies by configuration/series for other SA6D170 variants (e.g., SA6D170-A-1C, SA6D170-A-1T). Confirm with dealer for exact machine fitment. |
Frequently asked questions
What is the engine model?
Komatsu SA6D170-A-1E (S/N 10569-UP, Single Turbocharger)
What is the operating weight?
Varies by configuration/series (55,400-97,100 kg for host machines)
What replaced it?
Not documented for this exact serial range — verify with your dealer
What SA6D170-A-1E(S/N 10569-UP (SINGLE TURBOCHARGER)) owners discuss
What are the known powertrain and hydraulic behaviors for machines using the SA6D170-A-1E engine?
Komatsu excavators with this engine series are generally noted for smooth operation and high fuel efficiency. However, community consensus highlights that hydraulic pump failures often precede engine failure, leading to accelerated wear across the entire powertrain. Early 'Dash 6' generation machines in this class are specifically associated with main control valve issues. Operators report that if all hydraulic functions (boom, arm, bucket, swing, travel) become slow simultaneously, the issue is likely shared (pump, engine speed, or oil condition) rather than a single cylinder leak. Conversely, if only one function is slow, the main pump is less likely the cause, pointing instead to the specific circuit, valve, or cylinder. Hydraulic weakness that appears only when the machine is hot typically indicates internal leakage in pumps, motors, or cylinders due to reduced oil viscosity, rather than a complete pump failure. Machines may also exhibit 'slobbering' piston ring issues if maintenance is neglected, though this is more commonly cited for competing Cummins units in similar applications; Komatsu engines are generally regarded as having hardened liners and robust fuel systems compared to older designs.
What undercarriage or wear patterns are typical for this machine type?
Operators report that Komatsu machines are engineered to wear out complete systems simultaneously rather than gradually. Undercarriage wear is a primary cost driver, with track tension and roller condition being critical factors. A machine that pulls to one side during travel should first be checked for mechanical resistance (mud/debris in the track, roller condition, track-chain wear) before diagnosing hydraulic or final-drive issues. Testing travel speed in both forward and reverse directions is essential to isolate side-specific weaknesses. Final drive noise or grinding, particularly from the travel motor, is a known issue requiring specific tools and procedures to split. Track loosening is often linked to improper tensioning or undercarriage component wear rather than hydraulic system faults. The line is noted for having poor resale value partly because major components like pumps and engines tend to fail in close succession.
What are the engine quirks per the SA6D170-A-1E series?
The SA6D170-A-1E is a 6-cylinder, 23.1-liter diesel engine with a 170mm bore. It is a turbocharged model (indicated by 'S' in the code) with a water-cooled aftercooler ('A'). The engine is used in heavy applications such as the WA700 wheel loader and HD465-5 dozer. A key quirk is its sensitivity to airflow restrictions; loss of power under load is frequently caused by clogged air filters, fuel filters, or restricted charge-air hoses rather than internal engine failure. The engine relies on a high-pressure fuel system (Bosch-style injectors hitting at approximately 3,200 PSI) which requires clean fuel to prevent injector wear. Overheating during heavy excavation is common if the cooling package (radiator, hydraulic oil cooler, charge-air cooler) is packed with debris between the heat exchangers. The engine weight is approximately 1,700 kg.
What are common electrical or sensor issues reported by owners?
Komatsu machines rely heavily on electronic control systems, meaning a single faulty sensor or unstable power supply can trigger multiple warning signals. Owners frequently report intermittent starting, dashboard failures, or random machine shutdowns. These symptoms often stem from battery state of charge, loose engine/chassis grounds, or corroded connectors rather than major component failure. A battery may show acceptable voltage until the starter is loaded; a voltage drop test under load is recommended before replacing the starter. Multiple fault codes should prompt a check of the battery, grounds, and connectors first. The machine's electronic control strategy is model-specific, so diagnostic codes must be interpreted using the correct service manual for the exact serial range.
What should be checked when buying a used machine with the SA6D170-A-1E engine?
Verify the exact engine serial number and machine model code, as specifications vary by configuration and series. Check the engine serial plate (usually on the left side of the block or a data plate) and the machine VIN (stamped on the front between the hydraulic arms). Inspect the cooling package for debris packed between the radiator, hydraulic oil cooler, and charge-air cooler. Test hydraulic performance both cold and hot to identify internal leakage that only appears at operating temperature. Check for signs of recent filter replacements that may have introduced air into the fuel system. Verify the condition of the undercarriage, including track tension and roller wear. Inspect the main control valve for leaks or erratic behavior, particularly on earlier 'Dash 6' generation machines. Ensure the turbocharger and charge-air hoses are intact and free of leaks. Check the engine oil and hydraulic oil for contamination or degradation. Confirm the operation of all safety interlocks and pilot controls.
What are the critical safety considerations for this engine?
The engine operates with high-pressure fuel injection systems. Any work on the fuel system must be performed with the engine off and pressure relieved to prevent high-pressure fuel injection injuries. The cooling system is pressurized; do not open the radiator cap when hot. The engine weight is approximately 1,700 kg; use proper lifting equipment and procedures during removal or installation. The turbocharger operates at high temperatures; allow the engine to idle before shutdown to prevent oil coking in the turbo bearings. Hydraulic systems operate at high pressures; relieve pressure before disconnecting lines. Always consult the official Komatsu operation and maintenance manual for the specific machine model for detailed safety protocols and torque specifications. Have your dealer verify critical safety fixes and adjustments.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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