Komatsuengine(no series)
Komatsu S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA))
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu S6D170-1G-W is a six-cylinder, turbocharged diesel engine designed for heavy-duty applications in Canada, China, Chile, and Russia. It powers the PC650-1 and PC1500-1 excavator series, which are large mining and heavy earthmoving machines. The engine is part of the S6D170-1 series, which succeeded earlier 6D170 models and was later replaced by the SAA6D170-2 series. Configurations include standard and high-altitude variants, with serial numbers starting from 14674 for this specific regional specification.
Across the S6D170 series, changes focused on emissions compliance and durability for harsh environments. The -1G-W variant addresses specific regional requirements for Canada, China, Chile, and Russia. In the used market, this engine is critical for maintaining large excavators like the PC650-1 and PC1500-1. Its robust design and availability of overhaul kits make it a key component for fleet longevity in mining and heavy construction sectors.
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 S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) specifications
Engine
| Model | S6D170-1G-W |
| Series | S6D170-1 |
| Arrangement | 6 cylinder in line engine, turbocharged |
| Displacement | 23.2 liter (1,415.7 cu in) |
| Bore | 170.0 mm (6.69 in) |
| Stroke | 170.0 mm (6.69 in) |
| Power | 391 kW (524 hp) @ 1800 rpm |
| Torque | 2650 Nm (1954 lb-ft) @ 1300 rpm |
Weights
| Engine Weight | 2740 kg (6040 lb) |
Dimensions
| Engine Length | 1860 mm (73.2 in) |
| Engine Width | 1240 mm (48.8 in) |
| Engine Height | 2093 mm (82.4 in) |
Performance
| Note | Travel speeds, lift/dig/dump/drawbar, and gradeability are machine-specific values not documented for the engine component alone in the provided sources. |
Service capacities (summary)
| Note | Fuel tank, hydraulic system, engine oil, and cooling system capacities are machine-specific values not documented for the engine component alone in the provided sources. |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) beyond the schedule
Predictive Maintenance & Fluid Analysis
Use KOWA fluid analysis at every 500-hour interval to monitor engine wear metals and contaminants. Check coolant SCA levels at 500 hours to prevent scaling and corrosion. Monitor hydraulic oil particle count and viscosity at 1000 hours. Track fuel dilution and soot levels in engine oil to predict injector or piston ring wear. Use KOMTRAX telematics to track load frequency and fault codes for proactive scheduling.
Corrective & Common Repairs
Address intermittent starting or dashboard failures by checking the engine controller power and sensor circuits. Replace worn piston rings and liners if compression drops or oil consumption increases. Inspect the turbocharger for shaft play or seal leaks at 1000 hours. Replace fuel injectors if power loss or excessive smoke occurs. Check hydraulic pump and valve combinations for smooth operation to prevent engine strain.
Overhaul & Rebuild Points
Perform an out-of-frame overhaul when wear metals in KOWA samples exceed limits or compression is low. Replace pistons, rings, and cylinder liners as a set. Inspect the crankshaft and bearings for wear. Replace the complete gasket set and seals. Rebuild the turbocharger if efficiency drops. Ensure all components meet factory specifications for the S6D170-1G-W engine.
Seasonal & Environment Servicing
In cold climates, use appropriate grade engine oil and ensure the cooling system is protected against freezing. Check the DEF level and system function for Tier 4 compliance. In dusty environments, inspect the air filter more frequently and replace the outer element as needed. Protect hydraulic hoses from extreme temperatures and UV exposure. Verify battery health in cold weather to ensure reliable starting.
S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 600-311-8293 | Cartridge, Fuel Filter | Fuel system service | Check fitment → |
| 6127-71-6205 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| ND092220-0040 | Filter,Fuel | Fuel system service | Check fitment → |
| 6128-81-7042 | Element Assembly, Air Cleaner | Air intake service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor and backup speed sensor failure | Faulty speed sensor, damaged wiring harness, or corroded connector at the sensor pin | Inspect the sensor wiring and connector for damage or corrosion; replace the speed sensor if voltage checks fail |
| CA111 | Engine controller (ECM) internal fault | Electronic Control Module hardware failure or internal circuit malfunction | Verify power and ground to the ECM; replace or reprogram the ECM if the fault persists |
| CA451 | Common rail pressure sensor feedback value too high | Faulty rail pressure sensor, actual overpressure condition, or wiring short | Check the fuel rail pressure sensor and its wiring; inspect for actual overpressure in the fuel system |
| CA452 | Common rail pressure sensor feedback value too low | Faulty rail pressure sensor, low fuel pressure, or wiring open circuit | Diagnose the fuel rail pressure sensor circuit and check fuel pump regulator operation |
| CA234 | Engine overspeed | Throttle calibration error, excessive engine load cycle, or operator misuse | Verify throttle calibration and inspect the engine load cycle for mechanical binding or control issues |
| CA122 | Intake air pressure sensor feedback voltage too high | Faulty intake pressure sensor or shorted wiring | Verify the intake pressure sensor operation and inspect the wiring harness for shorts |
| CA123 | Intake air pressure sensor feedback voltage too low | Sensor short, airflow restriction, or wiring open circuit | Check for sensor short circuits and inspect for airflow restrictions in the intake system |
| CA441 | Battery voltage too low | Weak battery, failing alternator, or poor connections | Replace the battery or alternator as needed; check the voltage regulator and charging circuit |
| AA10NX | Air cleaner clogging | Clogged air filter element or restricted intake path | Replace the air filter element and inspect the intake path for obstructions |
| B@BCNS | Engine coolant overheating | Low coolant level, blocked radiator fins, or failed fan belt | Check the radiator fins for debris, inspect the fan belt, and verify the coolant level |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) attachments & work tools
Wheel Loader Attachments
The S6D170-1G-W engine is installed in Komatsu WA600-1L and WA700-1L wheel loaders. Typical bucket capacities for this class range from 3.0 to 4.2 cubic yards (2.3 to 3.2 cubic meters). Mounting systems utilize standard quick couplers compatible with the loader's hydraulic circuitry.
Excavator Attachments
This engine powers the PC650-1 and PC1500-1 excavators. Standard work tools include heavy-duty digging buckets, trenching buckets, and grading buckets. Hydraulic breaker configurations require specific high-flow auxiliary hydraulic kits and reinforced boom guarding.
Generator Set Attachments
The engine is used in DCA and EGS series diesel generator sets (e.g., EGS650, EGS760, EGS850). Configurations include standard sound-attenuated enclosures and open-frame industrial units. Power output options vary by series, typically ranging from 650 to 850 kVA.
Hydraulic & Mounting Notes
Work tools requiring auxiliary hydraulics must match the machine's pump flow specifications. Factory guarding options include high-abrasion wear plates on loader buckets and heavy-duty breaker packages for excavators. Verify hydraulic kit compatibility with the specific machine serial range.
All S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) assemblies by section
Every catalogued assembly group for the Komatsu S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Air Cleaner(#15667-)
| 01***70 | Bolt - Bracket And Oil Inlet Tubemounting | 2 |
| 01***75 | Bolt (M10-1.50x75) | 2 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 8 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Air Compressor (Inner Parts)(#15667-)
| 61***00 | Air Compressor Ass'Y | 1 |
| DK***00 | Cylinder | 1 |
| DK***40 | Gasket,Air Compressor | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Air Compressor Gasket Kit(#15707-)
| 07***15 | O-Ring,(Without Boom Kickout) | 1 |
| 07***85 | O-Ring,(Without Fuel Level Gauge) | 1 |
| 07***28 | O-Ring, Strainer To Control Pump Line | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Air Compressor Mounting(#15667-)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***70 | Bolt - Accumulator Mounting Bracket | 2 |
| 01***75 | Bolt - Tube Mounting | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Air Compressor Piping (1/2)(#15667-)
| 01***55 | Screw | 3 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 8 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Air Compressor Piping (2/2)(#15667-)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Air Intake Manifold And Connection(#15667-17480)
| 01***40 | Screw, Hex Socket | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***95 | Capscrew | 13 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Air Intake Manifold And Connection(#17481-)
| 01***40 | Screw, Hex Socket | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***95 | Capscrew | 15 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Alternator (50a) (Inner Parts)(#15667-)
| 60***81 | Alternator A. (50a) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Alternator (75a) (Inner Parts)(#15667-)
| 60***50 | Alternator A. (75a) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Alternator Drive(#15667-)
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
| 04***24 | Pin, Spring | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Alternator Mounting (50a)(#15667-)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***40 | Bolt (Op) | 1 |
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Alternator Mounting (75a)(#15667-)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***40 | Bolt (Op) | 1 |
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Auto Priming System(#15667-)
| 01***12 | Bolt - Front Cover Mounting | 4 |
| 01***60 | Bolt,(With Body Positioner) | 8 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Camfollower Cover(#15667-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 19 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Camshaft And Camfollower(#15667-17480)
| 01***32 | Washer,(Not Used With Emergency Str.) | 12 |
| 04***38 | Key | 1 |
| 04***12 | Ring, Snap (4) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Camshaft And Camfollower(#17481-)
| 01***32 | Washer,(Not Used With Emergency Str.) | 12 |
| 04***38 | Key | 1 |
| 04***12 | Ring, Snap (4) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Cooling Fan(#15667-)
| 01***40 | Bolt,For Weight Adjusting Bolt | 6 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
| 60***20 | Fan,(High Speed) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Corrosion Resistor(#15667-)
| 01***35 | Bolt,(For Fix Position) | 2 |
| 01***40 | Bolt (Op) | 2 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Crank Pulley
| 61***20 | Washer | 6 |
| 61***11 | Pulley? Hardening | 1 |
| 61***22 | Bolt | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Crankshaft
| 04***28 | Key, Plain Woodruff | 1 |
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 61***00 | Bearing Assembly | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Cylinder Block (For Fcd Piston) (-50c?)(#16583-)
| 01***18 | Bolt | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Cylinder Block (For Fcd Piston)(#16583-)
| 01***18 | Bolt | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Cylinder Block Gasket Kit(#15707-)
| 04***12 | Lock (Kit) | 1 |
| 07***09 | O-Ring,(F4350-61a0 -33 ) | 3 |
| 07***12 | O-Ring, Between Valve And Pump | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Cylinder Head
| 07***28 | O-Ring,(For Transmission Screen) | 2 |
| 07***08 | Plug (Kit) | 4 |
| 07***11 | Plug,(For Shipping) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Cylinder Head Gasket Kit(#15707-)
| 02***75 | O-Ring,(For Japan) (K1) | 4 |
| 02***81 | O-Ring,Air Connector | 2 |
| 07***28 | O-Ring,(For Transmission Screen) | 12 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Damper
| 61***00 | Damper | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Engine Mounting(#15667-)
| 01***50 | Bolt | 8 |
| 01***45 | Washer,(Without R.O.P.S.) | 8 |
| 04***34 | Pin-Dowel, Pin,Dowel (For Shipping) | 4 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Engine Stop Motor(#15707-)
| 01***45 | Bolt | 3 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Exhaust Manifold(#15667-)
| 01***65 | Bolt | 2 |
| 01***90 | Bolt | 22 |
| 07***08 | Plug | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fan Belt (Except Japan)(#15667-)
| 04***68 | V-Belt Set | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fan Drive (Except Japan)(#15667-)
| 01***55 | Capscrew | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***45 | Bolt, Mounting Cranking Motor | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Flywheel Housing(#15667-)
| 01***45 | Bolt, Mount Bracket | 4 |
| 01***55 | Bolt | 6 |
| 01***60 | Bolt,(Except Pll) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Flywheel(#15667-)
| 01***90 | Bolt | 10 |
| 61***20 | Washer, Plain (M20) | 10 |
| 61***20 | Gear | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Front Cover(#15667-17480)
| 01***30 | Screw | 1 |
| 01***35 | Bolt | 4 |
| 01***40 | Capscrew | 8 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Front Cover(#17481-)
| 01***30 | Screw | 1 |
| 01***35 | Bolt | 4 |
| 01***40 | Capscrew | 8 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Front Power Take Off(#15667-)
| 01***25 | Bolt,(Rear Attachment Less) | 6 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 6 |
| 04***18 | Ring, Snap | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Filter(#15707-18733)
| 01***65 | Capscrew | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Filter(#18734-)
| 01***65 | Capscrew | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Injection Pump (Coupling) (Inner Parts)(#15707-)
| ND***61 | Bolt | 6 |
| ND***30 | Nut,Flange | 2 |
| ND***20 | Flange | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Injection Pump (Feed Pump) (Inner Parts)(#15707-)
| ND***40 | Washer? 1mm,Plate | 1 |
| ND***10 | Spring,Tappet | 1 |
| ND***70 | Washer,Union | 4 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Injection Pump (Governor) (1/2) (Inner Parts)(#15707-)
| ND***40 | Plate,Thrust | 1 |
| ND***60 | Shackle Ass'Y | 1 |
| ND***50 | Washer? 0.3mm | 0 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Injection Pump (Governor) (2/2) (Inner Parts)(#15707-)
| ND***20 | Washer? 1.0mm,Cover Plate | 2 |
| ND***20 | Bushing,Bearing | 1 |
| ND***70 | O-Ring | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)(#15707-)
| 61***42 | Injection Pump Ass'Y | 1 |
| 61***43 | Injection Pump Ass'Y | 1 |
| ND***10 | Nut | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Injection Pump (Pump) (2/2) (Inner Parts)(#15707-)
| ND***40 | Washer | 12 |
| ND***30 | Spring,Plunger | 6 |
| ND***10 | Shim? 1.55mm | 0 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Injection Pump Drive
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 5 |
| 01***12 | Nut | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Injection Pump Mounting(#15707-)
| 01***90 | Bolt,(For No?1 And No?3 Housing) | 4 |
| 61***30 | Pin,Dowel | 2 |
| (6***2) | Injection Pump Ass'Y,(See Fig.A4010-B6b2) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Fuel Return(#15707-)
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***70 | Bolt - Bracket And Oil Inlet Tubemounting | 1 |
| 01***30 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Head Cover
| 01***55 | Bolt,(See Service News) | 28 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 28 |
| 01***16 | Washer,(With Shoe Slip Control) | 28 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Holder (Inner Parts)(#15707-)
| 61***60 | Holder Ass'Y | 6 |
| ND***20 | Shim? 1.00mm | 0 |
| ND***10 | Shim? 1.95mm | 0 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Idler Gear
| 01***35 | Bolt,(Not Shown) | 6 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 6 |
| 01***45 | Washer,(Without R.O.P.S.) | 3 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Injection Bracket And Piping(#15707-)
| 01***30 | Screw | 7 |
| 01***35 | Bolt | 3 |
| 01***35 | Bolt,(For Fix Position) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Injection Nozzle(#15707-)
| 07***14 | Tube, Spill | 5 |
| 07***80 | Clip | 10 |
| 61***10 | Bolt,Nozzle Holder | 12 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Lubricating Oil Cooler (-30c? And -50c?)(#15667-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(Rear Attachment Less) | 6 |
| 01***65 | Capscrew | 3 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Lubricating Oil Filter(#15667-)
| 01***40 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***45 | Bolt, Mounting Cranking Motor | 6 |
| 01***50 | Bolt,For Weight Adjusting Bolt | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Lubricating Oil Pump
| 01***70 | Bolt - Bracket And Oil Inlet Tubemounting | 2 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***50 | Bolt | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Mechanical Pump(#15667-)
| 01***16 | Bolt (Welded) | 2 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 1 |
| 01***05 | Capscrew | 4 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Muffler Ejector Piping(#15667-)
| 01***25 | Bolt,Joint | 6 |
| 01***35 | Capscrew | 1 |
| 01***16 | Washer,(With Shoe Slip Control) | 4 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Muffler Mounting(#15667-)
| 01***35 | Bolt | 1 |
| 01***75 | Bolt | 4 |
| 01***30 | Bolt | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Name Plate And Caution (English)(#15667-)
| 04***50 | Screw | 4 |
| 09***30 | Plate? Name,(English) (Limited Supply) | 1 |
| 61***50 | Plate? Caution,(For Auto Primming System) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Name Plate And Caution (Russian)(#15667-)
| 04***50 | Screw | 4 |
| 09***30 | Plate? Name,(English) (Limited Supply) | 1 |
| 61***80 | Plate? Caution,Auto Primming System | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Name Plate And Caution (Spanish)(#15667-)
| 04***50 | Screw | 4 |
| 09***30 | Plate? Name,(English) (Limited Supply) | 1 |
| 61***91 | Plate? Instruction,(For Auto Primming System) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Oil Filler(#15667-)
| 01***30 | Bolt,(With Body Positioner) | 5 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Oil Gauge (-30c?)(#15707-)
| 07***12 | O-Ring, Between Valve And Pump | 1 |
| 61***31 | Gauge,Oil Level | 1 |
| 61***51 | Guide,Oil Gauge | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Oil Pan And Suction Tube (-30c?)(#15707-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 49 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Other Parts(#15707-)
| 04***33 | V-Belt | 1 |
| 04***68 | V-Belt Set | 1 |
| 60***31 | Cartridge, Oil Filter | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Piston (For Fcd Piston)
| 02***13 | Pin, Dowel | 4 |
| 61***10 | Pin. Piston | 6 |
| 61***60 | Piston Ring Ass'Y, Per Cylinder | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Power Take Off(#15667-)
| 01***60 | Bolt, Hanger Bearing Mounting | 10 |
| 01***30 | Bolt,(With Body Positioner) | 7 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Rocker Arm And Houning(#15667-17480)
| 01***55 | Bolt - Mount Cage To Transmission Case | 6 |
| 01***90 | Bolt,For Weight Adjusting Bolt | 36 |
| 01***15 | Bolt | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Rocker Arm And Houning(#17481-)
| 01***55 | Bolt - Mount Cage To Transmission Case | 6 |
| 01***90 | Bolt,For Weight Adjusting Bolt | 36 |
| 01***15 | Bolt | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Spare Parts (Except Japan)(#15667-)
| 04***33 | V-Belt | 1 |
| 04***68 | V-Belt Set | 1 |
| 60***31 | Cartridge, Oil Filter | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Spare Parts (With Pre-Filter)(#15667-)
| 04***33 | V-Belt | 1 |
| 04***68 | V-Belt Set | 1 |
| 60***31 | Cartridge, Oil Filter | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Starting Motor (7.5kw) (Inner Parts)(#15667-)
| 60***10 | Starting Motor Ass'Y,(7.5kw) | 2 |
| KD***20 | Magnetic Switch Assembly | 1 |
| KD***40 | Spring,Spring | 4 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Starting Motor Mounting (7.5kw)(#15667-)
| 01***45 | Bolt,(For Slag Handling) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Tension Pulley(#15667-)
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Turbocharger (Inner Parts)(#15667-)
| 01***16 | Bolt | 4 |
| 01***16 | Bolt | 8 |
| 04***08 | Pin, Dowel | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Turbocharger Lubricating Oil Piping(#15667-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Turbocharger Mounting(#15667-)
| 61***10 | Gasket,Turbocharger Mounting | 1 |
| 61***81 | Flange | 1 |
| 61***10 | Gasket,Turbocharger Mounting | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Water Manifold
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 5 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 5 |
| 01***16 | Washer,Radio Controlled Slag Handling | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Water Manifold And Thermostat(#15667-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 9 |
| 01***30 | Bolt,(With Body Positioner) | 3 |
| 01***95 | Capscrew | 6 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Water Pump Gasket Kit(#15707-)
| 07***45 | O-Ring - (K6) | 1 |
| 07***12 | O-Ring,(Extreme Cold Terrain Spec.) (K2) | 1 |
| 61***13 | Seal, Water - (K6) | 1 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Water Pump(#15667-18379)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 7 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Water Pump(#18380-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 7 |
Komatsu : S6d170-1g-W(S/N 14674-Up (For Canada/China/Chile/Russia)) : Engine : Water Temperature(#15667-)
| 01***12 | Bolt - Front Cover Mounting | 1 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 1 |
S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) serial number reference
The Product Identification Number (PIN) plate is typically riveted to the right-hand side of the cab on the lower frame, just behind the front idler or beneath the operator's window. The engine serial number is stamped on the engine block, usually on the left side near the injection pump. Read the prefix (e.g., S6D170-1G-W) from the engine data plate to match the correct parts catalog for the specific serial range.
| Prefix | Identifies | Notes |
|---|---|---|
| S6D170-1G-W | S6D170-1G-W | Engine model S6D170-1G-W, Serial Number 14674-UP (For Canada / China / Chile / Russia). Confirmed in parts catalog listings and engine fitment guides for the 170 series. Confirm with dealer for exact serial break alignment with machine chassis PINs. |
Frequently asked questions
What engine does the Komatsu PC650-1 use?
The Komatsu PC650-1 uses the S6D170-1 series diesel engine.
What is the operating weight of the PC650-1?
The operating weight of the PC650-1 varies by configuration but is approximately 65,000 kg (143,300 lb).
What replaced the S6D170-1 series?
The SAA6D170-2 series replaced the S6D170-1 series in later Komatsu excavator models.
What S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) owners discuss
What are the known powertrain and hydraulic behaviors associated with the Komatsu S6D170-1G-W engine series?
The S6D170-1G-W is a six-cylinder turbocharged diesel engine. Community consensus indicates that Komatsu hydraulic systems are highly efficient but sensitive to engine speed. If the engine drops heavily in RPM when hydraulics are engaged, the hydraulic system may be placing excessive load on the engine or the engine may be unable to produce expected power. Conversely, if engine speed remains normal but hydraulic movements become weak, the hydraulic system is the primary suspect. The line is generally described as smooth and fuel-efficient; older dash-6 machines had known valve problems on specific models like the PC150 and PC120. If a hydraulic pump fails, the engine is often not far behind in terms of wear, contributing to lower resale values for older units. The engine is typically paired with machines like the PC650-1 and PC1000-1 excavators, and WA600/WA700 wheel loaders. The S6D170-1G-W variant (S/N 14674-UP) is specifically designated for Canada, China, Chile, and Russia markets, often with specific emissions or altitude configurations compared to the standard S6D170-1G-B or S6D170-1G-C variants.
What undercarriage or wear patterns are typical for machines powered by this engine type?
Machines equipped with the S6D170-1 series, such as the PC1000-1 and PC650-1, are heavy-duty earthmoving units. Typical wear patterns include undercarriage component fatigue due to high operating weights (often exceeding 60,000 lb for the PC1000-1 class). Track tension and undercarriage wear are critical maintenance items; tracks that repeatedly loosen indicate issues with the adjuster or component wear. Machines that pull to one side during travel often have mechanical resistance from mud/debris packed into the undercarriage or uneven track-chain condition rather than a hydraulic failure. Final drive noise is commonly associated with oil level and contamination issues. The heavy nature of these machines accelerates wear on rollers and track chains, requiring regular inspection of track tension and component alignment to prevent premature failure.
What are the specific engine quirks per the S6D170-1 series?
The S6D170-1 series is a robust industrial engine, but it has specific quirks. Engine performance issues, such as loss of power, increased fuel usage, or overheating, often signal airflow restriction, injector wear, or failing fuel delivery components. The engine is sensitive to fuel quality; air entering the fuel supply or water in the separator can cause starting issues. The cooling package operates in dusty environments, and material packed between the radiator, hydraulic oil cooler, and charge-air cooler can cause overheating during heavy work. If temperature rises during heavy work but falls when idling, cooling capacity may be marginal. The engine requires specific Komatsu lubricants, including Komatsu EO diesel engine oil and Super-coolant AF-NAC, to meet Komatsu Engineering Standards. The S6D170-1G-W variant may have specific calibration for altitude or emissions (e.g., -50 cent. Spec. variants exist in the series) that affect performance characteristics compared to standard models.
What are common electrical or sensor issues reported for this engine/machine combination?
Komatsu excavators rely heavily on electronic control systems. Common electrical issues include intermittent starting, dashboard failure, or machines that randomly shut down due to unstable power supplies or faulty sensors. Specific fault codes relevant to the engine include E10 (engine controller power failure), E11 (engine control failure/reduced output), E14 (feedback system failure), and E15 (engine sensor malfunction for temperature/fuel). Owners report that a single faulty sensor or unstable power supply can trigger multiple warning signals. Grounding issues are also common; engine and chassis grounds should be checked if the machine exhibits electrical gremlins. The monitor display panel provides diagnostic codes that help identify issues with sensors, switches, solenoids, and oil pressure, but false codes can occur if the battery state of charge is low or terminals are corroded.
What should be checked when buying a used machine with the S6D170-1G-W engine (S/N 14674-UP)?
When buying a used machine with this engine, verify the exact serial number prefix to confirm the S6D170-1G-W variant and its specific regional configuration (Canada/China/Chile/Russia). Check the engine's compression and blow-by, as the S6D170 series can suffer from ring and liner wear if maintenance was neglected. Inspect the hydraulic system for leaks and test all functions (boom, arm, bucket, swing, travel) both cold and hot to identify internal leakage that worsens with temperature. Check the undercarriage for excessive wear, track tension, and roller condition. Verify the cooling package is clean and free of packed debris. Test the electrical system for stable voltage under load and check for stored fault codes. Ensure the fuel system is clean and that the engine starts reliably without excessive cranking. Review the maintenance history for adherence to Komatsu's service intervals for oil, filters, and hydraulic fluid.
What are the critical fluid specifications for the S6D170-1G-W engine?
The S6D170-1G-W engine requires Komatsu Genuine Diesel Engine Oil (Komatsu EO specification) for lubrication. The cooling system uses Komatsu Super-coolant AF-NAC. Hydraulic systems should use Komatsu Genuine Hydraulic Oil (Komatsu HO specification) or equivalent high-quality hydraulic fluid meeting Komatsu standards. Fuel filters and oil filters must be replaced at specified intervals (typically 500 hours for oil filters, 250-500 hours for fuel filters depending on conditions) to prevent contamination. The engine oil capacity and coolant capacity vary by configuration; consult the specific machine's operation and maintenance manual for exact volumes. Using non-specified fluids can void warranties and lead to premature wear or cooling system issues.
What is a safety-critical fix related to the engine's cooling or fuel system that requires dealer verification?
If the engine overheats during heavy excavation or if coolant is repeatedly expelled, deeper engine diagnosis may be required, potentially indicating a failed head gasket or cooling system pressure issue. Additionally, if the machine suddenly derates or displays engine-related fault codes (E10-E15), the engine control system or aftertreatment components may need professional diagnosis. Have your dealer verify the exact cooling system pressure ratings and fuel injection timing specifications for the S6D170-1G-W variant, as these values can vary by configuration and serial range. Incorrect pressure settings can lead to catastrophic engine failure or unsafe operating conditions.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific S6D170-1G-W(S/N 14674-UP (FOR CANADA/CHINA/CHILE/RUSSIA)) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.