Komatsuengine(no series)

Komatsu SA6D170E-2C(S/N 17353-UP)

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu SA6D170E-2C engine (S/N 17353-UP) is a 23.1-liter, six-cylinder, turbocharged diesel powerplant designed for heavy-duty construction applications. It powers the WA600-3 series wheel loaders, which feature an operating weight range of approximately 55,400 to 57,500 kg (122,130 to 126,765 lb) and bucket capacities between 6.4 and 7.8 cubic meters. This engine series succeeded the earlier SA6D170-2 and SA6D170E-2A variants, representing a generation focused on meeting Tier 2/EU Stage II emissions standards while delivering high torque for heavy loading cycles. Configurations include standard and long-reach loader variants, with the SA6D170E-2C specifically designated for serial numbers 17353 and up.

Across the 6D170 series generations, the primary evolution involved the integration of advanced fuel injection systems and aftercooling to improve thermal efficiency and reduce particulate matter without requiring complex exhaust aftertreatment like DPFs found in later Tier 4/Stage V models. The SA6D170E-2C remains critical in the used and parts market because it bridges the gap between older mechanical engines and modern electronic controls, offering a robust platform for high-horsepower wheel loaders and dozers. Its widespread use in the WA600 and D375A-3 series ensures a large installed base, driving consistent demand for overhaul kits, injectors, and undercarriage components as these machines age.

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 SA6D170E-2C(S/N 17353-UP) specifications

Engine

ModelSA6D170E-2C
Serial Range17353-UP
Cylinders6
Displacement23.1 L (1413 in³)
Bore170 mm (6.69 in)
Stroke170 mm (6.69 in)
AspirationTurbocharged, after-cooled, cooled EGR
Emissions TierTier 2 / EU Stage II

Weights

Engine Weight1700 kg (3748 lb)

Dimensions

NoteMachine transport dimensions not documented for this specific engine serial range in source texts.

Performance

Engine Power (Range)394 kW (528 hp) to 568 kW (762 hp)
Power NoteVaries by configuration/series; 394 kW @ 1800 RPM for WA600-8; 568 kW @ 2000 RPM for WA700-8

Service capacities (summary)

NoteFluid capacities not documented for this specific engine serial range in source texts.

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

Komatsu SA6D170E-2C(S/N 17353-UP) maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition
  • Check hydraulic fluid level at sight glass
  • Check coolant level and ensure cap is secure
  • Drain water from fuel separator
  • Check air filter restriction indicator
  • Inspect hydraulic hoses for cracks and leaks
Every 250 h
  • Change engine oil and filter
  • Grease all pivot points including boom, stick, and bucket
  • Inspect air cleaner outer element
  • Inspect belts and hoses for wear
  • Check track tension and shoe condition
  • Visual inspection of undercarriage rollers and sprockets
Every 500 h
  • Replace fuel filter
  • Replace hydraulic return filter
  • Perform KOWA oil sampling for wear analysis
  • Test coolant SCA concentration
  • Load test battery and inspect alternator
  • Detailed undercarriage wear measurement
Every 1,000 h
  • Replace hydraulic oil
  • Change final drive oil on both sides
  • Inspect turbocharger condition
  • Check and adjust valve clearances
  • Inspect structural welds on boom and stick
  • Replace air filter outer element if dirty
Every 2,000 h
  • Flush and replace coolant
  • Inspect and replace worn hydraulic hoses
  • Comprehensive brake system inspection
  • Check swing machinery oil level and condition
  • Inspect exhaust system for leaks
  • Verify all electrical wiring integrity

Servicing the SA6D170E-2C(S/N 17353-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize KOWA (Komatsu Oil Wear Analysis) at every 500-hour interval to monitor engine wear metals and hydraulic contamination. Track coolant SCA concentration levels to prevent cavitation in the SA6D170E-2C cylinder liners. Analyze hydraulic oil particle counts to detect pump or valve wear early. Monitor DEF levels if the specific machine variant requires Tier 4 compliance, though the 2C series typically relies on engine design for emissions. Consistent fluid sampling prevents catastrophic failure in the high-pressure fuel system and hydraulic circuits.

Corrective & Common Repairs

Address frequent injector failures by checking for fuel contamination and water in the separator daily. Replace turbocharger seals if excessive oil consumption or blue smoke appears, a common issue in high-hour SA6D170E-2C engines. Inspect the oil cooler core for blockage, which leads to overheating under heavy load. Check the fuel lift pump pressure to ensure adequate supply to the high-pressure pump. Replace worn piston rings if blow-by exceeds limits, restoring compression and power output for the WA600 loader.

Overhaul & Rebuild Points

Plan for inframe overhaul around 15,000 to 20,000 hours, focusing on piston, ring, and liner replacement. Replace the crankshaft bearings and camshaft if wear measurements exceed factory tolerances. Inspect the cylinder head for warping or cracked valves during major service. Rebuild the hydraulic pump and swing motor if flow rates drop significantly. Use genuine gasket kits to ensure proper sealing of the high-pressure fuel lines and coolant passages in the 23.1L block.

Seasonal & Environment Servicing

In cold climates, verify coolant freeze protection and use low-viscosity engine oil to ensure cold starts. Clean the radiator and oil cooler fins frequently in dusty environments to prevent overheating. In high-humidity areas, drain the fuel separator more often to prevent water-induced injector corrosion. Inspect air intake seals to prevent dust ingestion, which accelerates cylinder liner wear. Adjust idle speeds and fuel limits if operating at high altitudes to maintain optimal combustion efficiency.

SA6D170E-2C(S/N 17353-UP) common service parts

Part numberPart
07281-00197Clamp,(With Pre-Fuel Filter)Check fitment →
600-311-8293Cartridge, Fuel FilterCheck fitment →
6127-71-6205Fuel Filter Ass'YCheck fitment →
600-311-8321Cartridge,Fuel FilterCheck fitment →
6127-71-6501Fuel Filter Ass'YCheck fitment →

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SA6D170E-2C(S/N 17353-UP) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
CA115Engine crankshaft speed sensor and backup speed sensor failureFaulty speed sensor, broken wiring harness, or corroded connector at the sensor pinInspect sensor wiring and connectors; replace the speed sensor if voltage is abnormal
CA111Engine controller internal faultElectronic Control Module (ECM) hardware failure or internal circuit malfunctionReplace or reprogram the ECM
CA451Common rail pressure sensor feedback value too highMalfunctioning rail pressure sensor, actual overpressure condition, or sensor wiring issueDiagnose the fuel rail pressure sensor and check pump lines for blockage
CA234Engine overspeedThrottle calibration error, excessive engine load cycle, or operator misuseVerify throttle calibration and review engine load cycles
CA122Intake air pressure sensor feedback voltage too highFaulty intake pressure sensor or wiring shortVerify the intake pressure sensor operation and inspect wiring
CA123Intake air pressure sensor feedback voltage too lowSensor short circuit or airflow restriction in the intake systemCheck for sensor short and inspect for airflow restrictions
CA441Battery voltage too lowWeak battery, failing alternator, or loose connectionsReplace the alternator or battery; check the voltage regulator
CA442Battery voltage too highFaulty voltage regulator or alternator overchargingReplace the alternator or battery; check the voltage regulator
CA153Intake air temperature sensor feedback voltage too highFaulty Intake Air Temperature (IAT) sensorReplace or test the IAT sensor
CA154Intake air temperature sensor feedback voltage too lowFaulty Intake Air Temperature (IAT) sensor or short circuitReplace or test the IAT sensor

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

SA6D170E-2C(S/N 17353-UP) attachments & work tools

Wheel Loader Attachments

The SA6D170E-2C engine is fitted to the WA600-3 series wheel loaders (serial A53001-UP) and WA700-3 series (serial 50001-UP). Typical bucket capacities for this class range from 6.4 to 9.2 cubic meters, with operating weights between 55,400 and 97,100 kg. Factory configurations include standard quick-coupler systems for rapid tool changes and high-lift linkage options for loading applications.

Crawler Excavator Attachments

This engine powers the PC1250-7 series excavators (serial 10001-UP). Standard work tools include heavy-duty digging buckets and grading buckets sized for 125-ton class operations. Hydraulic breaker kits and tilt-rotator couplers are common aftermarket options, requiring specific high-flow hydraulic circuit configurations to match the engine's power output.

Mining Dump Trucks

The SA6D170E-2C is used in the HD465-7E0 and HD605-7E0 rigid frame dump trucks (serial the OEM part reference-UP). These machines utilize standard high-capacity dump bodies designed for mining and heavy haulage. Factory guarding options include underbody protection and reinforced chassis components to withstand abrasive mining environments.

Bulldozer Attachments

The engine is specified for the D375A-8 series bulldozers. Work tools include semi-U and universal dozer blades with varying widths and capacities for earthmoving. Factory configurations often include ripper attachments for rock breaking, requiring specific hydraulic line routing and pressure settings compatible with the engine's hydraulic pump output.

Industrial Generator Sets

The SA6D170E-2C powers the EGS1000-7 and EGS1050-7 generator sets. These units are configured for continuous prime power applications with standard sound-attenuated enclosures. Factory options include automatic voltage regulators and remote monitoring interfaces, with cooling systems sized to maintain engine temperature under full load.

All SA6D170E-2C(S/N 17353-UP) assemblies by section

Every catalogued assembly group for the Komatsu SA6D170E-2C(S/N 17353-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine
Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Additional Fuel Filer (Sandy And Dusty Spec.)(#18669-)
01***45Bolt2
01***25Bolt,(For Canvas Canopy?Head Guard)4
01***45Bolt2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : After Cooler Water Piping (Tire Imflation Kit)(#19928-)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***30Bolt,(With Body Positioner)5
01***45Bolt,(With Water Separator Type)8
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : After Cooler Water Piping(#18669-)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***30Bolt,(With Body Positioner)5
01***45Bolt,(With Water Separator Type)8
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Air Cleaner And Mounting(#18669-19073)
01***70Bolt - Bracket And Oil Inlet Tubemounting2
01***75Bolt (M10-1.50x75)2
01***08Nut, Regular Hexagon (M10-1.50)8
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Air Cleaner And Mounting(#19074-)
01***70Bolt - Bracket And Oil Inlet Tubemounting2
01***75Bolt (M10-1.50x75)2
01***08Nut, Regular Hexagon (M10-1.50)8
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Air Compressor (Inner Parts)(#19928-)
61***00Air Compressor Ass'Y1
DK***00Cylinder1
DK***00Nipple1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Air Compressor Gasket Kit(#19928-)
07***15O-Ring,(Without Boom Kickout)1
07***85O-Ring,(Without Fuel Level Gauge)1
07***28O-Ring, Strainer To Control Pump Line1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Air Compressor Mounting(#19928-)
01***16Bolt - Seat And Tether Belt Mounting1
01***45Bolt,(With Water Separator Type)1
01***35Bolt, Mount Ground Driven Steering Pump2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Air Compressor Piping(#19928-)
01***55Screw3
01***60Bolt,(F4320-52a0 -5- )2
07***12Gasket,(Without Air Compressor Type) (K1)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Air Intake Manifold And After Cooler (Tire Imflation Kit)(#19928-)
01***40Screw, Hex Socket4
01***20Bolt,(For Mono Lever Steering)4
01***95Capscrew15
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Air Intake Manifold And After Cooler(#18669-)
01***40Screw, Hex Socket4
01***20Bolt,(For Mono Lever Steering)4
01***95Capscrew15
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Alternator (50a) (Inner Parts)(#18669-)
60***81Alternator A. (50a)1
SD***X0Coil Assembly1
SD***X0Washer1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Alternator (75a) (Inner Parts)(#18669-)
60***50Alternator A. (75a)1
SD***X0Coil Assembly1
SD***X0Washer1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Alternator Drive (Hardening)
01***30Bolt,(With Body Positioner)2
01***30Washer,Spring(Sandy?Dusty Terrain S.)2
04***24Pin, Spring1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Alternator Mounting (50a)(#18669-)
01***30Bolt,(With Body Positioner)4
01***40Bolt (Op)2
01***55Bolt - Mount Cage To Transmission Case1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Alternator Mounting (75a)(#18669-)
01***30Bolt,(With Body Positioner)4
01***40Bolt (Op)2
01***55Bolt - Mount Cage To Transmission Case1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Auto Primming System (1/2)(#18669-20106)
01***12Bolt - Front Cover Mounting4
01***65Capscrew7
01***19Washer,(Not Used With Ventilator)4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Auto Primming System (1/2)(#20107-)
01***12Bolt - Front Cover Mounting4
01***65Capscrew7
01***19Washer,(Not Used With Ventilator)4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Auto Primming System (2/2)(#18669-20106)
01***16Bolt, Battery To Frame Ground Wire Attaching1
01***20Bolt,(For Mono Lever Steering)1
01***75Bolt (M10-1.50x75)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Auto Primming System (2/2)(#20107-)
01***16Bolt, Battery To Frame Ground Wire Attaching1
01***20Bolt,(For Mono Lever Steering)1
01***75Bolt (M10-1.50x75)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Camfollower Cover(#18669-18951)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***30Bolt,(With Body Positioner)18
01***35Bolt,(F4320-52a0 -5 )2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Camfollower Cover(#18952-)
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***30Bolt,(With Body Positioner)18
01***35Bolt,(F4320-52a0 -5 )2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Camshaft And Camfollower(#18669-19339)
01***32Washer,(Not Used With Emergency Str.)12
04***38Key1
04***12Ring, Snap (4)4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Camshaft(#19340-)
01***32Washer,(Not Used With Emergency Str.)12
04***38Key1
04***12Ring, Snap (4)4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Controller(#19887-)
78***00A.P.S. Control Unit,(Forwarded Individually Parts)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cooling Fan(#18669-)
01***40Bolt,For Weight Adjusting Bolt6
01***36Washer,Radio Controlled Slag Handling6
01***32Washer,(Not Used With Emergency Str.)6
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Corrosion Resistor
01***30Bolt,(With Body Positioner)4
01***50Screw1
01***95Bolt1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Crank Pulley(#18669-)
61***20Washer6
61***22Bolt6
61***40Pulley? Hardening1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Crankshaft
04***28Key, Plain Woodruff1
04***24Pin,Dowel (For No.3 Housing)1
61***00Bearing Assembly1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cylinder Block Blind Cover(#19340-)
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***20Bolt,(Without Rops Guard? Canopy)2
01***30Washer,Spring(Sandy?Dusty Terrain S.)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cylinder Block Gasket Kit(#18669-)
04***12Lock (Kit)1
07***09O-Ring,(F4350-61a0 -33 )3
07***12O-Ring, Between Valve And Pump1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cylinder Block(#18669-19339)
01***18Bolt6
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***20Bolt,(Without Rops Guard? Canopy)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cylinder Block(#19340-)
01***18Bolt6
01***25Washer,Spring?(Sandy And Dusty Spec.)6
04***14Pin, Dowel2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cylinder Head
07***28O-Ring,(For Transmission Screen)2
07***28O-Ring,(For Hd325-6?Hm400-1) (A2110)2
07***08Plug (Kit)4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cylinder Head Cover(#17353-19339)
01***55Bolt,(See Service News)28
01***30Washer,Spring(Sandy?Dusty Terrain S.)28
01***16Washer,(With Shoe Slip Control)28
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cylinder Head Cover(#19340-)
61***12Cover,Head6
61***81Packing,Nozzle Holder (K1)6
61***11Gasket,Head Cover6
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Cylinder Head Gasket Kit(#18669-)
02***43O-Ring,Water Manifold2
02***75O-Ring,(For Japan) (K1)4
02***81O-Ring,Air Connector4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Damper
Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Engine Mounting(#18669-)
01***50Bolt8
01***45Washer,(Without R.O.P.S.)8
04***34Pin-Dowel, Pin,Dowel (For Shipping)4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Engine Stop Motor(#18669-)
01***25Capscrew1
01***45Bolt3
01***16Bolt, Battery To Frame Ground Wire Attaching1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Exhaust Manifold
01***90Bolt24
07***08Plug2
61***90Spacer24
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fan Belt(#18669-)
Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fan Drive(#18669-)
01***50Bolt,(Not Used When With Cab)1
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***45Bolt, Mounting Cranking Motor6
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Flywheel Housing(#18669-)
01***45Bolt4
01***55Bolt6
01***60Bolt2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Flywheel(#18669-19572)
01***90Bolt10
61***20Washer, Plain (M20)10
61***20Gear1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Flywheel(#19573-)
01***90Bolt10
61***20Washer, Plain (M20)10
61***20Gear1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Front Cover Mounting (Extreme Cold Terrain Spec.)(#19340-)
01***16Bolt - Seat And Tether Belt Mounting9
01***25Washer,Spring?(Sandy And Dusty Spec.)9
61***60Pointer1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Front Cover(#18669-19339)
01***35Bolt,(For Pedal Steering)4
01***40Bolt,(Not Used With Cab)2
01***50Screw3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Front Cover(#19340-)
01***35Bolt4
01***40Capscrew2
01***50Bolt,(Not Used When With Cab)3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Front Power Take Off (For Tire Inflation Kit)(#19928-)
01***25Bolt,(Rear Attachment Less)6
01***25Washer,Spring?(Sandy And Dusty Spec.)6
04***18Ring, Snap1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Front Power Take Off(#18669-)
01***25Bolt,(Rear Attachment Less)6
01***25Bolt,(Without Rops Guard? Canopy)2
01***60Bolt,For Weight Adjusting Bolt3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Filter(#18669-18751)
01***65Capscrew1
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***60Bolt,(F4320-52a0 -5- )3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Filter(#18752-)
01***70Screw1
01***25Bolt,(For Canvas Canopy?Head Guard)1
01***60Bolt,(F4320-52a0 -5- )3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump (Coupling) (Inner Parts)(#18669-)
DK***00Bolt2
DK***00Bolt6
DK***00Coupling1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump (Feed Pump) (Inner Parts)(#18669-)
DK***00Valve,Check4
DK***20Bolt,Joint1
DK***30Eye,Joint1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (Inner Parts)(#18669-)
DK***00Gasket1
DK***00Gear1
DK***00Shim? 2.00mm,(High Altitude Spec.)0
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (Inner Parts)(#18669-)
DK***80Shim? 0.5mm0
DK***40Gasket,Air Compressor4
DK***00Nut,Cap1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)(#18669-)
61***80Injection Pump A1
DK***30Bearing,Roller1
DK***00Coupling1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (Inner Parts)(#18669-)
DK***00Nut12
DK***00Spring1
DK***00Shim? 0.875mm0
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump Bracket And Piping(#18669-20610)
01***25Capscrew1
01***30Screw5
01***35Bolt,(For Fix Position)4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump Bracket And Piping(#20611-)
01***30Screw4
01***35Bolt,(For Fix Position)4
01***50Bolt,(Spark Arrester Spec.)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump Drive(#18669-)
01***30Bolt,(With Body Positioner)4
01***35Bolt, Mount Ground Driven Steering Pump5
01***12Nut1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Injection Pump Mounting(#18669-)
01***90Bolt,(For No?1 And No?3 Housing)4
07***10Connector, Grease Fitting1
61***30Pin,Dowel2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Fuel Return(#18669-)
01***20Bolt,(For Mono Lever Steering)4
01***40Bolt (Op)1
01***55Bolt,(See Service News)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Head Cover Relatad Parts(#19340-)
01***55Bolt,(See Service News)28
01***30Washer,Spring(Sandy?Dusty Terrain S.)28
01***16Washer,(With Shoe Slip Control)28
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Holder (Inner Parts)
61***10Holder Ass'Y6
61***11Holder Ass'Y6
DK***00Shim? 0.80mm0
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Holder (Inner Parts)(#21379-)
61***11Holder Ass'Y6
DK***00Shim? 0.80mm0
DK***00Shim? 1.38mm0
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Idler Gear
01***35Bolt,(Not Shown)6
01***30Washer,Spring(Sandy?Dusty Terrain S.)6
01***45Washer,(Without R.O.P.S.)3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Injection Nozzle
07***14Tube, Spill5
07***80Clip10
61***10Bolt,Nozzle Holder12
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Injection Nozzle(#21379-)
07***14Tube, Spill5
07***80Clip10
61***10Bolt,Nozzle Holder12
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Lubricating Oil Cooler (With Water Heater)(#17353-19339)
01***16Bolt - Box Mounting10
01***20Bolt, Wiring Harness Mounting Bracket2
01***25Bolt,(Rear Attachment Less)6
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Lubricating Oil Cooler(#18669-19339)
01***16Bolt - Box Mounting10
01***20Bolt, Wiring Harness Mounting Bracket2
01***25Bolt,(Rear Attachment Less)6
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Lubricating Oil Cooler(#19340-)
01***16Bolt - Box Mounting10
01***20Bolt, Wiring Harness Mounting Bracket2
01***65Capscrew3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Lubricating Oil Filter
01***40Bolt,For Weight Adjusting Bolt2
01***45Bolt, Mounting Cranking Motor6
01***50Bolt,For Weight Adjusting Bolt2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Lubricating Oil Pump
01***70Bolt - Bracket And Oil Inlet Tubemounting2
01***40Bolt,For Weight Adjusting Bolt4
01***20Bolt,(Forwarded Individually Parts)6
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Muffler And Mounting (Ec. Dynamic Noise Suppression Spec.)(#18669-)
01***35Bolt1
01***30Bolt2
01***70Bolt4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Muffler Ejector Piping (Ec. Dynamic Noise Suppression Spec.)(#18669-)
01***25Bolt,Joint4
01***65Bolt,(For Alternator Bracket Mount)2
01***85Screw1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Muffler Ejector Piping(#18669-)
01***25Bolt,Joint4
01***65Bolt,(For Alternator Bracket Mount)1
01***85Screw2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Muffler Mounting(#18669-)
01***35Bolt1
01***35Bolt1
01***30Bolt2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (Chinese)(#19611-20106)
04***50Screw4
09***30Plate? Name,(English) (Limited Supply)1
61***90Plate? Caution,Auto Primming System2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (Chinese)(#19887-)
61***90Plate? Caution,Auto Primming System2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (English) (For Eu Exhaust Gas Regulation)(#19564-20050)
04***50Screw4
61***50Plate? Caution,(For Auto Primming System)2
61***10Plate? Name,(Limited Supply)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (English)(#18669-20106)
04***50Screw4
09***30Plate? Name,(English) (Limited Supply)1
61***50Plate? Caution,(For Auto Primming System)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (For Ec Regulation)(#20107-)
04***50Screw4
61***10Plate? Name,(Limited Supply)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (French) (For Eu Exhaust Gas Regulation)(#19564-20050)
04***50Screw4
61***80Plate? Caution,(For Auto Primming System)2
61***10Plate? Name,(Limited Supply)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (French)(#18669-20106)
04***50Screw4
09***30Plate? Name,(English) (Limited Supply)1
61***80Plate? Caution,(For Auto Primming System)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (French)(#19887-)
61***80Plate? Caution,(For Auto Primming System)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (German) (For Eu Exhaust Gas Regulation)(#19564-20050)
Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (German)(#18669-20106)
04***50Screw4
09***30Plate? Name,(English) (Limited Supply)1
09***30Plate? Name,(German) (Limited Supply)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (German)(#19887-)
61***80Plate? Caution,(For Auto Primming System)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (Japanese-English)(#19887-)
61***50Plate? Caution,(For Auto Primming System)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (Japanese-English)(#20092-)
04***50Screw4
09***30Plate? Name,(English) (Limited Supply)1
60***40Plate? Name,(Limited Supply)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (Spanish)(#18836-20106)
04***50Screw4
61***91Plate? Instruction,(For Auto Primming System)2
61***10Plate? Name,(Limited Supply)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (Spanish)(#18888-20106)
04***50Screw4
09***30Plate? Name,(English) (Limited Supply)1
61***91Plate? Instruction,(For Auto Primming System)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Name Plate And Caution Plate (Spanish)(#19887-)
61***91Plate? Instruction,(For Auto Primming System)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Oil Cooler Mounting Parts (With Water Heater)(#19340-)
01***25Bolt,(Rear Attachment Less)6
01***20Bolt,(For Mono Lever Steering)1
01***35Bolt,(F4320-52a0 -5 )5
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Oil Cooler Mounting Parts(#19340-)
01***25Bolt,(Rear Attachment Less)6
01***35Bolt,(F4320-52a0 -5 )5
01***50Bolt,(Spark Arrester Spec.)3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Oil Filler(#18669-)
Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Oil Gauge (With Oil Heater)(#18868-)
61***10Bushing, Oil Gauge Guide1
61***20Collar1
61***30Nut,(For Shipping)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Oil Level Gauge(#18669-)
61***10Bushing, Oil Gauge Guide1
61***20Collar1
61***30Nut,(For Shipping)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Oil Pan And Suction Tube (With Oil Heater)(#18868-)
01***20Bolt,(For Mono Lever Steering)2
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***30Bolt,(With Body Positioner)49
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Oil Pan And Suction Tube(#18669-)
01***20Bolt,(For Mono Lever Steering)1
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***30Bolt,(With Body Positioner)49
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Piston(#18669-)
02***13Pin, Dowel4
61***10Pin. Piston6
61***80Piston Ring Ass'Y,Per Cylinder6
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Power Take Off(#18669-)
01***60Capscrew10
01***30Bolt,(With Body Positioner)6
01***35Bolt,(F4320-52a0 -5 )2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Rocker Arm And Houning(#18669-19339)
01***20Bolt,(Without Rops Guard? Canopy)1
01***55Bolt - Mount Cage To Transmission Case6
01***90Bolt,For Weight Adjusting Bolt36
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Rocker Arm And Houning(#19340-)
01***20Bolt,(Without Rops Guard? Canopy)1
01***32Washer,(Not Used With Emergency Str.)1
42***10Bracket1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Rocker Arm(#19340-)
01***55Bolt - Mount Cage To Transmission Case6
01***90Bolt,For Weight Adjusting Bolt36
01***15Bolt6
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Safety Guard(#18669-)
01***20Bolt,(For Mono Lever Steering)4
01***35Bolt,(F4320-52a0 -5 )2
01***85Bolt,(Used With Pin Puller)1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Spare Parts(#17360-20106)
04***33V-Belt1
04***74V-Belt Set1
60***31Cartridge, Oil Filter2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Spare Parts(#19887-)
04***33V-Belt,(Extreme Cold Terrain Spec.)1
04***74V-Belt Set,Fan Drive1
60***70Nut, Wing1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Starting Motor (7.5kw) (Inner Parts)(#18669-20538)
60***11Starting Motor Ass'Y, (7.5kw)2
KD***20Magnetic Switch Assembly1
KD***40Spring,Spring4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Starting Motor (7.5kw) (Inner Parts)(#20539-)
60***12Starting Motor Ass'Y,(7.5kw)2
KD***20Magnetic Switch Assembly1
KD***40Spring,Spring4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Starting Motor Mounting (7.5kw)(#18669-)
01***45Capscrew - M166
01***20Bolt,(For Mono Lever Steering)2
01***20Bolt,(Without Rops Guard? Canopy)2
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Tamper Proof Kit (For Regulaition Of Epa)(#17548-)
Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Tension Pulley(#18669-)
01***20Bolt, Wiring Harness Mounting Bracket2
01***20Bolt,(For Mono Lever Steering)1
01***35Bolt, Mount Ground Driven Steering Pump3
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Thermostat Housing(#17360-)
01***30Bolt,(With Body Positioner)5
01***40Bolt (Op)1
01***65Bolt - Return Line And Suction Linehose Clamps1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Turbocharger (Inner Parts)(#18669-)
01***16Bolt4
01***16Bolt8
01***16Bolt8
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Turbocharger Lubricating Oil Piping(#18669-)
01***16Bolt - Seat And Tether Belt Mounting1
01***20Bolt,(For Mono Lever Steering)1
01***25Bolt,(For Canvas Canopy?Head Guard)4
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Turbocharger Mounting(#18669-)
01***25Bolt,Joint8
61***90Nut, Mounting4
61***10Gasket,Turbocharger Mounting1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Water Manifold
01***80Bolt,(With Corrosion Resistor)1
01***30Washer,Spring(Sandy?Dusty Terrain S.)1
01***16Washer,Radio Controlled Slag Handling1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Water Pump Gasket Kit(#18669-)
07***45O-Ring - (K6)1
07***12O-Ring,(Extreme Cold Terrain Spec.) (K2)1
07***12O-Ring,(F4350-59a1 -17 )1
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Water Pump(#18669-)
01***20Bolt, Wiring Harness Mounting Bracket2
01***25Bolt,(For Canvas Canopy?Head Guard)2
01***30Bolt,(With Body Positioner)7
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Komatsu : Sa6d170e-2c(S/N 17353-Up) : Engine : Water Temperature(#18669-)
01***12Bolt - Front Cover Mounting1
01***20Bolt,(Without Rops Guard? Canopy)1
01***08Washer,(For 1 Attachment And Pat)1
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SA6D170E-2C(S/N 17353-UP) serial number reference

The engine PIN plate is riveted to the engine block, typically on the left side near the injection pump or on a metal data plate affixed to the valve cover area. Read the prefix by identifying the engine model code stamped on the plate (e.g., SA6D170E-2C), which identifies the engine family and generation rather than a 3-character machine PIN prefix.

PrefixIdentifies
SA6D170E-2CStandard SA6D170E-2C engine
SA6D170E-2C-7SA6D170E-2C variant
SA6D170E-2C-WDSA6D170E-2C variant

Frequently asked questions

What is the engine specification for the Komatsu SA6D170E-2C?

The SA6D170E-2C is a 23.1-liter, six-cylinder, turbocharged diesel engine with a bore of 170 mm. It delivers approximately 391 kW (525 HP) at 1800 rpm and meets Tier 2/EU Stage II emissions standards.

What is the operating weight of the machine powered by this engine?

The WA600-3 series wheel loaders powered by the SA6D170E-2C have an operating weight range of 55,400 to 57,500 kg (122,130 to 126,765 lb), depending on the specific configuration and bucket size.

What engine replaced the SA6D170E-2C in later Komatsu models?

The SA6D170E-2C was succeeded by the SA6D170E-3 and SAA6D170E-3 series engines, which were introduced to meet stricter Tier 3 and Tier 4 Final/Stage V emissions regulations while maintaining similar displacement and power output.

What SA6D170E-2C(S/N 17353-UP) owners discuss

What are the known powertrain and hydraulic behaviors for the Komatsu SA6D170E-2C engine series?
The SA6D170E-2C is a six-cylinder, turbocharged, water-cooled diesel engine. It is typically paired with Komatsu’s hydraulic systems, which are known for smooth operation and fuel efficiency. Community consensus indicates that if the engine loses power under load, 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 designed to wear out complete machines all at once; if a hydraulic pump fails, the engine is often not far behind due to shared contamination or load issues. This contributes to lower resale values for older Dash 6 and similar era machines. Early series machines had valve problems particularly on certain models, but the SA6D170E-2C series generally offers strong hydraulic performance and efficient power delivery compared to earlier generations of competitors.
What undercarriage or wear patterns are typical for machines powered by this engine?
Machines equipped with the SA6D170E-2C (such as the WA600-3 series wheel loaders and PC1250-7 excavators) are heavy-duty units subject to significant undercarriage wear. Common wear patterns include degradation of track pads, bushings, and bearings due to continuous load and dust exposure. Worn-out bushings can lead to noise and vibration, while worn bearings may cause premature failure of the tracks. Track tension and undercarriage wear are critical maintenance areas. A machine that drifts or pulls while travelling should have its mechanical conditions checked first, including track tension on both sides, mud or debris packed into one undercarriage, roller condition, and track-chain condition. If mechanical resistance is similar but one track consistently runs slower, hydraulic or final-drive diagnosis becomes more relevant. Final drives and travel motors are common points of failure, often exhibiting grinding noises or leakage.
What are the common engine quirks and maintenance requirements for the SA6D170E-2C series?
The SA6D170E-2C engine requires specific fluid specifications to maintain performance. Komatsu recommends using Komatsu EO, TO, AXO, or HO fluids for engine and hydraulic systems, and Super-coolant AF-NAC for the cooling system. Engine performance issues such as loss of power, increased fuel usage, or overheating may signal airflow restriction, injector wear, or failing fuel delivery components. Owners often report intermittent starting, dashboard failure, or machines that randomly shut down, which can be triggered by a single faulty sensor or unstable power supply. The cooling package operates in a dusty environment; material packed between heat exchangers (radiator, hydraulic oil cooler, charge-air cooler) can cause overheating. If temperature rises during heavy work but falls when idling, cooling capacity may be marginal. If coolant is repeatedly expelled or the system becomes highly pressurized shortly after a cold start, deeper engine diagnosis may be required. The engine weight is approximately 1,700 kg.
What are the common electrical and sensor issues associated with this engine and its machine?
Komatsu excavators and wheel loaders rely heavily on electronic control systems. A single faulty sensor or unstable power supply can trigger multiple warning signals. Common electrical issues include intermittent starting, dashboard failure, and random shutdowns. Owners should check battery state of charge, battery terminals, engine and chassis grounds, and the main starter cable if the engine does not crank. If the engine cranks but does not start, check fuel level, fuel quality, fuel filters, water separator, and air entering the fuel supply. Multiple fault codes often point to battery, grounds, or connectors. The machine may suddenly derate due to engine or aftertreatment issues; the exact warning and codes must be diagnosed. The SA6D170E-2C engine is part of the 170 series, which includes variants like SAA6D170E-2 and SA6D170E-3, each with specific electrical configurations. Always identify the exact machine and engine model before using service specifications, as electrical systems are model-specific.
What should be checked when buying a used machine with the SA6D170E-2C engine (S/N 17353-UP)?
When buying a used machine with the SA6D170E-2C engine (S/N 17353-UP), verify the exact serial-prefix specification sheet and installed attachment package. Check the engine for signs of overheating, such as coolant leaks or pressurized system issues. Inspect the hydraulic system for leaks, stuck components, and inadequate fluid levels. Check the undercarriage for worn track pads, bushings, and bearings. Test the travel motors and final drives for grinding noises or leakage. Check the electrical system for intermittent starting, dashboard failures, or random shutdowns. Verify the condition of the cooling package, including the radiator, hydraulic oil cooler, and charge-air cooler. Check the fuel system for air leaks or clogged filters. Confirm the engine model and serial number match the machine's specifications. The SA6D170E-2C engine is used in machines like the WA600-3 wheel loader and PC1250-7 excavator. Parts availability for gray market Komatsu machines can be difficult, so ensure parts are available for the specific model. The engine is turbocharged and water-cooled, with a displacement of 23.1 liters and a bore of 170mm. The engine weight is approximately 1,700 kg. Have your dealer verify the engine and hydraulic system condition before purchase.
How does the SA6D170E-2C engine compare to other Komatsu 170 series engines in terms of application and specs?
The SA6D170E-2C is part of the Komatsu 170 series, which includes variants like S6D170E, SA6D170E, SAA6D170E-2, and SAA6D170E-3. The SA6D170E-2C is specifically used in machines with serial numbers 17353 and up. The 170 series engines are six-cylinder, turbocharged, and water-cooled. The SA6D170E-2C has a displacement of 23.1 liters and a bore of 170mm. It is used in heavy-duty applications such as wheel loaders (WA600-3) and excavators (PC1250-7). The engine meets EU Stage II and Tier 2 standards. The SA6D170E-3 variant is used in machines like the D375A-5 bulldozer and PC1250-7 excavator. The SAA6D170E-2 is used in generators and other industrial applications. The engine weight is approximately 1,700 kg. The SA6D170E-2C is a specific variant with a water-cooled aftercooler. The engine is designed for durability and reliability in demanding applications. The 170 series engines are known for their strong hydraulic performance and fuel efficiency. The SA6D170E-2C is a robust engine suitable for heavy earthmoving and construction tasks.
What are the critical safety fixes and maintenance items for the SA6D170E-2C engine?
Critical safety fixes and maintenance items for the SA6D170E-2C engine include regular inspection of the cooling system to prevent overheating. Check the radiator, hydraulic oil cooler, and charge-air cooler for blockages or leaks. Ensure the coolant level is correct and use Komatsu Super-coolant AF-NAC. Inspect the fuel system for air leaks and clogged filters. Check the engine oil level and use Komatsu EO, TO, AXO, or HO fluids. Inspect the hydraulic system for leaks and worn seals. Check the undercarriage for worn components and proper track tension. Test the electrical system for faulty sensors and unstable power supplies. Verify the condition of the turbocharger and aftercooler. Have your dealer verify the engine and hydraulic system condition before purchase. The engine is turbocharged and water-cooled, with a displacement of 23.1 liters and a bore of 170mm. The engine weight is approximately 1,700 kg. The SA6D170E-2C is a specific variant with a water-cooled aftercooler. The engine is designed for durability and reliability in demanding applications. The 170 series engines are known for their strong hydraulic performance and fuel efficiency. The SA6D170E-2C is a robust engine suitable for heavy earthmoving and construction tasks.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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