Komatsuengine(no series)
Komatsu SA6D140E-2D-7(S/N 22537-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu SA6D140E-2D-7 is a six-cylinder, turbocharged, aftercooled diesel engine designed for heavy-duty construction applications. It powers the PC600-6 and PC600LC-6 hydraulic excavators, as well as the WA500-3 wheel loader and D155AX-5 bulldozer. The engine delivers approximately 287 kW (385 HP) and meets EC Stage II emissions regulations. Production years for these specific machine models span the late 1990s through the mid-2000s. The SA6D140E-2D-7 succeeded earlier SA6D140E-1 variants and was eventually replaced by the SA6D140E-3 series in subsequent machine generations like the PC600-7. Configurations offered include standard and long-carriage (LC) undercarriage variants for excavators, and standard wheel loader frames.
Across the SA6D140E series generations, Komatsu refined fuel injection systems and cooling capacities to improve efficiency and durability. The SA6D140E-2D-7 remains significant in the used and parts market because it powers high-volume PC600 and WA500 models that are still widely active in earthmoving and quarrying. Its robust 14.0-liter displacement and simple mechanical-hydraulic architecture make it a cost-effective alternative to newer Tier 4 engines for fleet managers prioritizing uptime and repairability over complex emissions aftertreatment. The engine's widespread use ensures strong aftermarket parts support and a large pool of experienced technicians familiar with its service requirements.
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 SA6D140E-2D-7(S/N 22537-UP) specifications
Engine
| Model | SA6D140E-2D-7 |
| Displacement | 14.0 L (854 cu in) |
| Cylinders | 6 |
| Aspiration | Turbocharged, aftercooled |
| Emissions Tier | Tier 4 Final / EU Stage V |
Weights
| Operating Weight | varies by configuration/series |
| Shipping Weight | not documented for this exact serial range — verify with your dealer |
| Ground Pressure | not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | not documented for this exact serial range — verify with your dealer |
| Transport Width | not documented for this exact serial range — verify with your dealer |
| Transport Height | not documented for this exact serial range — verify with your dealer |
| Track Gauge | not documented for this exact serial range — verify with your dealer |
| Ground Clearance | not documented for this exact serial range — verify with your dealer |
Performance
| Travel Speed | not documented for this exact serial range — verify with your dealer |
| Dig Depth | not documented for this exact serial range — verify with your dealer |
| Gradeability | not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | not documented for this exact serial range — verify with your dealer |
| Hydraulic System | not documented for this exact serial range — verify with your dealer |
| Engine Oil | not documented for this exact serial range — verify with your dealer |
| Cooling System | not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu SA6D140E-2D-7(S/N 22537-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the SA6D140E-2D-7(S/N 22537-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Komatsu KOWA fluid analysis at every 500-hour interval to monitor engine wear metals (iron, copper, lead, aluminum) and contaminants (silicon for dirt, sodium for coolant). Track hydraulic fluid particle count and viscosity to detect pump or valve wear early. Monitor coolant pH, SCA concentration, and glycol content to prevent liner cavitation and corrosion. Analyze final drive oil for gear wear indicators. Use KOMTRAX telematics to correlate fluid trends with engine load frequency and fuel consumption, allowing proactive intervention before catastrophic failure occurs.
Corrective & Common Repairs
Address intermittent starting or random shutdowns by inspecting the engine controller power supply and sensor wiring, as electronic control systems are sensitive to voltage fluctuations. Replace worn fuel delivery components if power loss or increased fuel usage is detected. Clean or replace the air filter element when the restriction indicator triggers to prevent airflow restriction. Inspect the turbocharger KTR110L for shaft play or seal leaks. Check the oil cooler thermo valve for proper cracking at 85°C and full open at 100°C to ensure correct operating temperature.
Overhaul & Rebuild Points
Plan for major overhaul based on wear measurements taken at 1,000-hour intervals. Monitor cylinder liner wear, piston ring gap, and bearing clearances. Replace cylinder head gaskets and valve seals if compression drops or oil consumption rises. Inspect the flywheel ring gear and flywheel housing for wear. Check the crankshaft main and rod bearings for scoring or excessive clearance. Replace the oil pan gasket if leaks develop. Use genuine Komatsu overhaul kits to ensure proper fit and performance for the 14.0-liter displacement.
Seasonal & Environment Servicing
In cold climates below -40°C, use HM350-1 specification fluids and ensure the cooling system is protected against freezing. In dusty environments, inspect the air filter more frequently and clean the radiator and oil cooler fins daily to prevent overheating. Check the fuel water separator daily to remove accumulated water and contaminants. In high-temperature environments, monitor coolant levels closely and ensure the fan belt tension is correct. Grease all pivot points more frequently in abrasive conditions to extend undercarriage and linkage life.
SA6D140E-2D-7(S/N 22537-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-185-6100 | Element Assembly, Air Cleaner | Air intake service | Check fitment → |
| 7861-93-1420 | Sensor,Air Filter Clogging | Air intake service | Check fitment → |
| 6162-53-5430 | Packing,Oil Filter And Piping | Lubrication service | Check fitment → |
| 6162-53-5450 | Packing,Oil Filter And Piping | Lubrication service | Check fitment → |
| 600-211-1231 | Cartridge, Oil Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
SA6D140E-2D-7(S/N 22537-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor failure | Faulty sensor, broken wiring, or corroded connector at the pin interface | Replace the speed sensor and verify voltage at the pin connector |
| CA111 | Internal engine controller fault | ECM internal hardware failure | Replace or reprogram the ECM |
| CA451 | Common rail pressure sensor feedback value too high | Malfunctioning rail pressure sensor or actual overpressure condition | Diagnose the fuel rail pressure sensor or check pump lines |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration and engine load cycle |
| CA441 | Battery voltage too low | Weak battery, failing alternator, or voltage regulator issue | Replace the alternator or battery; check the voltage regulator |
| CA442 | Battery voltage too high | Alternator overcharging or voltage regulator failure | Replace the alternator or battery; check the voltage regulator |
| CA122 | Intake air pressure high voltage | Intake pressure sensor fault or wiring issue | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure low voltage | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA2311 | IMV solenoid valve failure | Faulty IMV solenoid or wire harness issue | Replace the IMV solenoid or inspect the wire harness |
| AA10NX | Air cleaner clogging | Dirty or blocked air filter element | Replace the air filter |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
SA6D140E-2D-7(S/N 22537-UP) attachments & work tools
Excavator Buckets
Standard and heavy-duty digging buckets are the primary work tools for this engine class, typically ranging from 0.5 to 1.2 cubic meters in volume. These buckets attach via a standard pin-on coupler system requiring two auxiliary hydraulic circuits for the quick coupler mechanism.
Dozer Blades
Straight (SE) and semi-universal (SU) dozer blades are the standard configurations for this engine family, with capacities varying by machine width. Attachment utilizes a rigid or semi-rigid mount with hydraulic cylinders for tilt and angle control, requiring auxiliary hydraulic lines for power.
Loader Buckets
Light material and heavy-duty loader buckets are offered for wheeled applications, typically sized between 1.5 and 3.0 cubic meters. These tools connect via a universal skid-steer style coupler or proprietary pin-on system, requiring auxiliary hydraulics for tilt and roll functions.
Hydraulic Breakers
Hydraulic hammers are a common attachment, requiring a dedicated high-flow hydraulic kit installed in the boom or arm. The engine's hydraulic pump capacity must be verified against the breaker's flow requirements to ensure optimal performance without derating.
Factory Guarding
Factory-installed guarding options include FOPS/ROPS certified canopies and heavy-duty undercarriage guards. These configurations are designed to protect the engine compartment and hydraulic lines from falling debris and impact damage during operation.
All SA6D140E-2D-7(S/N 22537-UP) assemblies by section
Every catalogued assembly group for the Komatsu SA6D140E-2D-7(S/N 22537-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : After Cooler Water Piping(#22537-30036)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***40 | Bolt (Op) | 2 |
| 01***65 | Bolt - Return Line And Suction Linehose Clamps | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : After Cooler Water Piping(#30037-)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 4 |
| 01***40 | Bolt (Op) | 2 |
| 01***65 | Bolt - Return Line And Suction Linehose Clamps | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Air Cleaner (With Heat Shield)(#27560-30036)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Air Cleaner (With Heat Shield)(#30037-)
| 01***30 | Bolt,(With Body Positioner) | 5 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***40 | Bolt (Op) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Air Cleaner (Without Heat Shield)(#27560-30036)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Air Cleaner (Without Heat Shield)(#30037-)
| 01***30 | Bolt,(With Body Positioner) | 5 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***40 | Bolt (Op) | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Air Intake Manifold And After Cooler(#22537-30036)
| 01***00 | Bolt,(For Front Brake Release) | 11 |
| 01***55 | Bolt,(With Corrosion Resistor) | 3 |
| 01***60 | Bolt | 7 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Air Intake Manifold And After Cooler(#30037-)
| 01***00 | Bolt,(For Front Brake Release) | 11 |
| 01***55 | Bolt,(With Corrosion Resistor) | 3 |
| 01***60 | Bolt | 7 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Air Vent(#27560-)
| 01***20 | Bolt | 1 |
| 01***16 | Washer,Radio Controlled Slag Handling | 1 |
| 07***15 | Gasket,(Hd325?Pc750?800?1800) (A5010) | 13 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator (35a) (Inner Parts)
| 60***10 | Alternator A. (35a) | 1 |
| 60***11 | Alternator A. (35a) | 1 |
| KD***50 | Bracket,Rear | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator (35a) (With Hardening Pulley) (Inner Parts)(#25887-)
| 60***10 | Alternator A. (35a) | 1 |
| KD***70 | Bushing,Insulate | 1 |
| KD***40 | Bushing,Insulate | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator (50a) (Inner Parts)(#27560-28010)
| 60***70 | Alternator A. (50a) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator (50a) (With Hardening Pulley) (Inner Parts)(#25887-27970)
| 60***10 | Alternator A. (50a) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator (60a) (Inner Parts)(#28011-)
| 60***10 | Alternator A. (60a) | 1 |
| KD***70 | Bushing,Insulate | 1 |
| KD***40 | Bushing,Insulate | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator (60a) (With Hardening Pulley) (Inner Parts)(#27971-)
| 60***70 | Alternator A. (60a),(See Fig.A6010-B4k6) | 1 |
| KD***70 | Bushing,Insulate | 2 |
| KD***40 | Bushing,Insulate | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator Mounting (35a)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator Mounting (35a) (With Hardening Pulley)(#25887-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator Mounting (50a) (With Hardening Pulley)(#25887-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Alternator Mounting (50a)(#27560-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Camfollower Cover
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Camfollower(#26075-)
| 04***12 | Ring, Retaining | 4 |
| 61***30 | Pin,Dowel | 12 |
| 61***20 | Ball | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Camshaft(#26075-)
| 01***20 | Bolt (M12-1.75x20) | 2 |
| 04***25 | Key, Plain Woodruff | 1 |
| 62***12 | Camshaft Assembly | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Corrosion Resistor
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Corrosion Resistor (Slag Handling Spec.)(#28419-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Crank Pulley(#27560-)
| 01***85 | Bolt | 6 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 6 |
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Crankshaft
| 61***30 | Key Parallel | 1 |
| 62***00 | Bearing Assembly | 1 |
| 62***10 | Main Bearing Assembly | 7 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Cylinder Block (1/2)(#26660-)
| 01***45 | Washer,(Without R.O.P.S.) | 14 |
| 04***14 | Pin, Dowel | 2 |
| 04***20 | Pin,Dowel (Welded) | 12 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Cylinder Block (2/2)(#26660-)
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***25 | Screw | 6 |
| 01***16 | Washer,(With Water Separator) | 6 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Cylinder Block Gasket Kit(#27560-)
| 01***12 | Washer,(F2320-63a2 -13 ) | 2 |
| 01***23 | Washer,(Not Shown) | 1 |
| 07***12 | O-Ring, Between Valve And Pump | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Cylinder Block Related Parts(#26660-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 6 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Cylinder Head
| 01***20 | Bolt (M10-1.75x120) | 6 |
| 04***20 | Pin,Dowel (Welded) | 2 |
| 07***25 | O-Ring,Lubrication Valve | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Cylinder Head Gasket Kit(#27560-)
| 02***75 | O-Ring,(For Japan) (K1) | 4 |
| 02***81 | O-Ring,Air Connector | 2 |
| 07***25 | O-Ring,Corrosion Resistor | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Damper
| 01***30 | Bolt,(Not Used When Towing Winch) | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
| 62***00 | Damper Ass'Y | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Ejector Piping (With Heat Shield)(#27560-30036)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Ejector Piping (With Heat Shield)(#30037-)
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***49 | Clamp, Hose | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Ejector Piping (Without Heat Shield)(#27560-30036)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Ejector Piping (Without Heat Shield)(#30037-)
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
| 07***49 | Clamp, Hose | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Engine Mounting(#27560-)
| 17***11 | Support,Front | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Exhaust Manifold
| 01***55 | Screw | 2 |
| 01***00 | Screw | 22 |
| 07***08 | Plug,(For W/O. Corrosion Resistor) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Flywheel Housing(#27560-)
| 01***40 | Bolt,(For Center Guard) | 3 |
| 01***50 | Bolt, Radiator To Frame | 5 |
| 01***40 | Bolt (Kit) | 3 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Flywheel(#27560-)
| 61***30 | Screw | 10 |
| 61***30 | Gear | 1 |
| 62***10 | Spacer | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Front Cover And Breather Related Parts (Slag Handling Spec.)(#28419-)
| 01***16 | Bolt - Box Mounting | 2 |
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Front Cover And Breather Related Parts(#26075-)
| 01***16 | Bolt - Box Mounting | 2 |
| 01***30 | Bolt - M8 X 30lg | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Front Cover(#27560-)
| 07***16 | Plug, Expansion | 7 |
| 62***70 | Sleeve | 1 |
| 62***10 | Cover,Front | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Front Power Take Off
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 5 |
| 01***30 | Bolt,(With Body Positioner) | 3 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Front Power Take Off (Without Front Power Take Off)
| 01***20 | Bolt,(For Mono Lever Steering) | 3 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***15 | Bolt, Fan Mounting | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Filter
| 01***40 | Screw, Hex Socket | 1 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Filter (Slag Handling Spec.)(#28419-)
| 01***40 | Screw, Hex Socket | 1 |
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump (Coupling) (Inner Parts)(#27560-)
| DK***00 | Coupling | 1 |
| DK***00 | Bolt | 6 |
| DK***00 | Bolt | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump (Feed Pump) (Inner Parts)(#27560-)
| DK***20 | Bolt, Joint | 1 |
| DK***20 | Housing | 1 |
| DK***00 | Valve,Check | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (Inner Parts)(#27560-)
| DK***00 | Gasket | 1 |
| DK***00 | Governor Ass'Y | 1 |
| DK***20 | Flyweight Ass'Y | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (Inner Parts)(#27560-)
| DK***80 | Shim? 0.5mm | 0 |
| DK***00 | Washer,Spring | 1 |
| DK***80 | Bolt,Eye | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)(#27560-)
| 62***50 | Injection Pump Ass'Y | 1 |
| DK***30 | Bearing,Roller | 2 |
| DK***90 | Pump Ass'Y | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (Inner Parts)(#27560-)
| DK***20 | Plunger Ass'Y | 1 |
| DK***20 | Plunger Block A | 6 |
| DK***00 | Shim? 0.875mm | 0 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump Drive(#22653-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
| 01***19 | Nut | 1 |
| 01***16 | Washer,(For Shipping) | 3 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump Lubricator
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump Mounting(#27560-)
| 01***90 | Bolt,(For No?1 And No?3 Housing) | 4 |
| 01***16 | Washer,Radio Controlled Slag Handling | 4 |
| 07***10 | Connector, Grease Fitting | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump Piping
| 01***25 | Capscrew | 4 |
| 01***30 | Screw | 4 |
| 01***35 | Bolt | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Injection Pump Safety Guard(#25887-)
| 01***10 | Bolt,(With Joy Stick Steering) | 4 |
| 07***10 | Connector, At Case | 1 |
| 62***71 | Cover,Safety | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Fuel Return(#25887-)
| 01***20 | Capscrew | 1 |
| 01***16 | Washer,Radio Controlled Slag Handling | 1 |
| 04***10 | Clip,(For Mono Lever Steering) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Head Cover Mounting(#26084-)
| 01***55 | Screw | 18 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Head Cover(#26084-)
| 62***11 | Cover,Rocker Arm Housing | 6 |
| 62***20 | Gasket, Rocker Lever Housing | 6 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Heat Shield(#27560-)
| 01***20 | Bolt,(For Mono Lever Steering) | 7 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***90 | Capscrew | 3 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Heater Switch Wiring(#22537-28601)
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***16 | Washer,(For 35a Alternator) | 2 |
| 04***08 | Clip | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Heater Switch Wiring(#28602-)
| 01***12 | Bolt,(With Speedometer) | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 2 |
| 01***60 | Bolt - Upper Cooler Inlet Tubemounting | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Idler Gear(#26526-)
| 01***30 | Bolt - M8 X 30lg | 6 |
| 61***60 | Pin, Dowel | 1 |
| 61***22 | Bolt | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Injection Nozzle(#25748-)
| 01***20 | Capscrew | 6 |
| 07***21 | O-Ring,Oil Cooler Pipe | 6 |
| 07***21 | Seal, O-Ring | 6 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Muffler (With Heat Shield)(#27560-30036)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***95 | Capscrew | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Muffler (With Heat Shield)(#30037-)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***95 | Capscrew | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Muffler (Without Heat Shield)(#27560-30036)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***95 | Capscrew | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Muffler (Without Heat Shield)(#30037-)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***95 | Capscrew | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Name Plate And Caution Plate(#25887-)
| 04***50 | Screw | 4 |
| 09***40 | Plate? Name,(Limited Supply) (English) | 1 |
| 60***00 | Plate,(Limited Supply) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Nozzle Holder (Inner Parts)(#25748-)
| 62***31 | Connector | 1 |
| 62***00 | Nozzle Holder Ass'Y | 6 |
| 62***20 | Nozzle | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Oil Adapter
| 01***16 | Bolt,(For Slag Handling) | 3 |
| 01***30 | Bolt,(With Body Positioner) | 2 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 5 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Oil Cooler(#22653-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***30 | Bolt,(With Body Positioner) | 13 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Oil Filter
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 8 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Oil Level Gauge
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***08 | Nut,(For Canvas Canopy?Head Guard) | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Oil Pan And Suction Tube
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 42 |
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Oil Pump
| 01***25 | Bolt,(Rear Attachment Less) | 4 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 1 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Piston
| 02***13 | Pin, Dowel | 2 |
| 04***20 | Ring, Retaining | 12 |
| 62***10 | Bolt | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Power Take Off Lubricator(#27560-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 07***12 | O-Ring, Between Valve And Pump | 1 |
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 6 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Power Take Off(#27560-)
| 01***30 | Bolt,(With Body Positioner) | 5 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 12 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Rocker Arm And Housing(#26075-)
| 01***80 | Bolt (M12-2.00x80) | 6 |
| 01***80 | Bolt (M10-1.50x80) | 17 |
| 01***20 | Bolt (M12-1.75x120) | 12 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Service Parts (Exhaust Pipe And Rain Cap)(#27560-)
| 61***71 | Cap,Rain | 1 |
| 62***70 | Pipe,Exhaust | 1 |
| 62***71 | Pipe,Exhaust | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Starting Motor (11kw) (Inner Parts)(#27560-)
| 60***30 | Starting Motor Ass'Y,(11kw) | 1 |
| SD***X0 | Pinion Clutch Ass'Y | 1 |
| SD***X0 | Bearing,Ball | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Starting Motor Mounting (11kw)(#27560-)
| 01***40 | Bolt,(With Center Guard) | 3 |
| 08***19 | Band,(Without Air Conditioner) | 1 |
| 08***10 | Connector, Clip | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Tension Pulley (With Hardening Pulley)(#27560-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***40 | Bolt (Op) | 2 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Thermostat And Piping(#27560-)
| 01***50 | Bolt,(Spark Arrester Spec.) | 2 |
| 01***70 | Screw | 1 |
| 01***85 | Bolt,(For Reversible Fan) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Turbocharger (Slag Handling Spec.) (Inner Parts)(#28419-)
| 01***16 | Bolt | 4 |
| 01***16 | Bolt | 8 |
| 04***08 | Pin, Dowel | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Turbocharger (Inner Parts)
| 01***16 | Bolt | 4 |
| 01***16 | Bolt | 8 |
| 01***16 | Bolt | 8 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Turbocharger Mounting
| 61***90 | Nut, Mounting | 4 |
| 61***10 | Screw | 4 |
| 62***31 | Gasket, Turbocharger | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Turbocharger Mounting (Slag Handling Spec.)(#28419-)
| 61***90 | Nut, Mounting | 4 |
| 61***10 | Screw | 4 |
| 62***31 | Gasket, Turbocharger | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Turbocharger Oil Piping
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 3 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Turbocharger Oil Piping (Slag Handling Spec.)(#28419-)
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 3 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Water Pump Gasket Kit(#27560-)
| 02***37 | O-Ring,(For Pc750?1800) (A5010) | 2 |
| 07***55 | O-Ring,Front Accessory Drive | 2 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Water Pump(#27560-)
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***80 | Bolt,(With Corrosion Resistor) | 1 |
| 01***95 | Capscrew | 3 |
Komatsu : Sa6d140e-2d-7(S/N 22537-Up) : Engine : Water Separator
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 3 |
| 01***65 | Bolt | 1 |
SA6D140E-2D-7(S/N 22537-UP) serial number reference
The engine serial number plate is typically located on the left side of the engine block, near the injection pump. The prefix is the alphanumeric code stamped on the plate, identifying the engine model and generation (e.g., SA6D140E-2D-7). The serial number follows the prefix and indicates the build sequence within that engine family.
| Prefix | Identifies | Notes |
|---|---|---|
| SA6D140E-2D-7 | Engine Model | Identifies the specific engine configuration (6-cylinder, turbocharged, aftercooled, Tier 3/Stage IIIA emissions) used in the SA6D140E-2D-7 family. Serial range 22537-UP applies to this engine model variant. Source: published references catalog listing and published references parts book title. Confirm with dealer for exact application to specific machine chassis (e.g., PC600-7, D155AX-5). Single-source engine-specific prefix confirmation. |
| SA6D140E-2A-7D | Engine Model Variant | Related engine variant within the same serial range (22537-UP). Source: published references shop listing. Confirm with dealer for specific fitment. |
Frequently asked questions
What engine does the Komatsu PC600-6 use?
The Komatsu PC600-6 hydraulic excavator uses the Komatsu SA6D140E-3 engine.
What is the operating weight of the Komatsu PC600-6?
The operating weight of the Komatsu PC600-6 varies by configuration, typically ranging from 52,300 lbs to 55,000 lbs.
What replaced the Komatsu PC600-6?
The Komatsu PC600-6 was replaced by the PC600-7 series, which features updated emissions compliance and engine technology.
What SA6D140E-2D-7(S/N 22537-UP) owners discuss
What are the known powertrain and hydraulic behaviors for machines using the SA6D140E-3 engine?
The SA6D140E-3 engine delivers 287 kW (385 HP) and is noted for reduced fuel consumption in economy mode. Hydraulic systems on Komatsu excavators are generally smooth and fuel-efficient, but older dash-6 series machines are reported to have valve problems, particularly on PC150 and PC120 models. A common industry observation is that if a hydraulic pump fails, the engine may be near the end of its service life, contributing to lower resale values for the line. All hydraulic functions becoming slow simultaneously typically points to a shared cause such as oil level, filter condition, or engine RPM, rather than individual cylinder leakage. Weakness that appears only when hot often indicates internal pump or valve leakage that is less obvious when the oil is cold and viscous. (varies by configuration/series)
What undercarriage or wear patterns are typical for this machine type?
Machines operating in continuous load, dust exposure, and temperature extremes experience accelerated wear. Track tension should be monitored closely as tracks that repeatedly loosen indicate issues with the tensioner or undercarriage component wear. Pulling to one side during travel is often caused by mud or debris packed into one undercarriage, roller condition, or track-chain wear rather than a failed travel motor. Testing the symptom in both forward and reverse helps distinguish between hydraulic flow issues and mechanical resistance.
What are the engine quirks per the SA6D140E-3 series?
The SA6D140E-3 is a 6-cylinder, turbocharged, and aftercooled diesel engine with a displacement of approximately 14.0 liters (854 cubic inches). It is used in applications including the D155AX-5 Bulldozer, PC600-6/PC600LC-6/PC600-7 Hydraulic Excavator, WA500-3 Wheel Loader, and PC750-6/PC750LC-6/PC750-7 Hydraulic Excavator. Engine performance issues such as power loss, increased fuel usage, or overheating may signal airflow restriction, injector wear, or failing fuel delivery components. The engine meets EC Stage II regulations. (varies by configuration/series)
What are common electrical or sensor issues reported?
Komatsu excavators rely heavily on electronic control systems; a single faulty sensor or unstable power supply can trigger multiple warning signals. Owners often report intermittent starting, dashboard failure, or machines that randomly shut down. Error codes E-79 and E-7A indicate Common Rail Fuel High Pressure Abnormality 1 and 2, respectively. Multiple fault codes often point to battery state, grounds, or connectors. A battery can show acceptable voltage until the starter is loaded; if the display dims heavily during starting, a load and voltage-drop test is required before replacing the starter.
What should be checked when buying a used machine with the SA6D140E-3 engine?
Verify the exact serial-prefix specification sheet and installed attachment package, as configurations change weight, reach, and fuel use. Check the cooling package for material packed between heat exchangers, as the machine may look clean externally while internal spaces are blocked. Inspect the hydraulic oil condition and temperature behavior; weak performance when hot suggests internal leakage. Test travel speed in both directions to identify side-specific hydraulic or final-drive issues. Confirm the engine fault codes and check for recent fuel-system maintenance to rule out simple filter or venting issues before assuming high-pressure component failure.
What are the critical cooling system specifications and checks?
The oil cooler thermo valve on the SA6D140E-3 has a cracking temperature of 85 ± 1.5°C and is fully open at 100°C with a lift of 8 mm. The heat transmission surface area is 0.986 m² for the SA6D140E-3 (D155AX-5A) and 1.230 m² for the SA6D140E-3 and SAA6D140E-3. If coolant is repeatedly expelled or the system becomes highly pressurized shortly after a cold start, deeper engine diagnosis may be required.
What safety-critical fixes require dealer verification?
Proper service and repair is extremely important for safe machine operation. Specific safety procedures are described for different repair tasks like welding, grinding, and working with multiple workers. Have your dealer verify the exact serial range specifications and safety protocols before performing any service. (varies by configuration/series)
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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