Komatsuengine(no series)

Komatsu SA6D140E-3G-7(S/N 110001-UP)

Maintenance schedule, common problems & OEM parts breakdown

Search live SA6D140E-3G-7(S/N 110001-UP) parts

The Komatsu SA6D140E-3G-7 is a 6-cylinder, turbocharged, aftercooled diesel engine belonging to the 140-3 Series. It powers heavy-duty machines including the D155AX-5 bulldozer, PC600-6/PC600-7 excavators, WA500-3 wheel loaders, and HM350-1 articulated dump trucks. The engine delivers 287 kW (385 hp) at 1800 rpm with a displacement of 15.24 L (930.1 cu in). Production for this specific serial range (110001-UP) spans the late 1990s through the mid-2000s. It succeeded the SA6D140E-2 series and was eventually replaced by the SAA6D140E-7 series to meet stricter emissions standards. Configurations vary by application, with specific intake, exhaust, and mounting arrangements for dozers, excavators, and wheel loaders.

Across the 140-3 generation, Komatsu refined the fuel injection system and cooling capacity to improve thermal efficiency and durability in high-load environments. The SA6D140E-3G-7 remains critical in the used and parts market because it serves as the common powerplant for multiple high-value machine families. Its widespread use in the PC600 and D155 series ensures a robust supply of remanufactured components and aftermarket support. The engine's modular design allows for efficient in-frame overhauls, keeping operating costs low for fleet managers maintaining aging but reliable earthmoving equipment.

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-3G-7(S/N 110001-UP) specifications

Engine

Model	SA6D140E-3G-7 (S/N 110001-UP)
Gross Power	287 kW (385 hp) @ 1800 rpm
Displacement	15.24 L (930.1 cu in)
Cylinders	6
Emissions Tier	EC Stage II

Weights

Operating Weight

56,478 kg (124,520 lb)

Dimensions

Bucket Capacity

3.5 m³ (4.6 cu yd)

Performance

Hydraulic Pump Flow	818 L/min (216.7 gal/min)
Hydraulic System Pressure	34.3 MPa (4,978.2 psi)

Service capacities (summary)

Fuel Tank	879 L (232.5 gal)
Engine Oil	57 L (15.1 gal)
Cooling System	36 L (9.5 gal)
Hydraulic System	37 L (9.8 gal)

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

Komatsu SA6D140E-3G-7(S/N 110001-UP) maintenance schedule

Service interval	Tasks
Every 10 h	Check engine oil level and condition. Check hydraulic fluid level at sight glass. Check coolant level and verify cap is secure. Drain water from fuel separator. Check air filter restriction indicator. Inspect hydraulic hoses for cracks or leaks.
Every 250 h	Change engine oil and replace oil filter. Grease all pivot points on boom, stick, and bucket. Check coolant level and top up as needed. Inspect drive belts and tension. Inspect all hoses and clamps. Visual inspection of undercarriage and track tension.
Every 500 h	Replace fuel filter element. Replace hydraulic return filter. Test battery load and clean terminals. Perform KOWA oil sampling for wear analysis. Test coolant SCA concentration. Measure undercarriage wear and track pitch.
Every 1,000 h	Replace air filter outer element. Change final drive oil on both sides. Inspect turbocharger for shaft play. Check valve clearance and adjust if necessary. Sample hydraulic oil for particle count. Inspect structural welds on boom and stick.
Every 2,000 h	Flush and replace engine coolant. Change hydraulic system oil. Replace transmission oil and filter. Inspect and clean radiator and oil cooler fins. Perform comprehensive component evaluation. Check and torque ROPS/FOPS bolts.

Servicing the SA6D140E-3G-7(S/N 110001-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize KOWA fluid analysis at every 500-hour interval to monitor iron, copper, and lead wear metals in the SA6D140E-3G-7 engine oil. Track coolant SCA concentration levels to prevent cavitation erosion in the cylinder liners. Analyze hydraulic oil particle counts to detect pump or valve wear early. Monitor fuel dilution and soot levels in the engine oil to determine optimal drain intervals based on actual operating conditions rather than fixed schedules alone.

Corrective & Common Repairs

Address low fuel pressure codes by inspecting the transfer pump and relief valves on the SA6D140E-3G-7. Replace worn piston rings and cylinder liners if blue smoke or excessive oil consumption occurs. Repair turbocharger shaft play by replacing the turbo assembly or core. Fix ECU derating issues by checking the engine revolution speed sensor and wiring harness connections. Replace fuel injectors if cylinder imbalance or poor combustion is detected during diagnostic checks.

Overhaul & Rebuild Points

Perform an in-frame overhaul when cylinder liner wear exceeds limits or compression drops significantly. Replace the complete set of pistons, rings, and liners during major rebuild. Inspect crankshaft main and rod bearings for scoring or excessive clearance. Replace camshaft and lifters if valve timing or lift is compromised. Use a comprehensive overhaul gasket kit to replace all seals, O-rings, and gaskets during disassembly to ensure proper reassembly and leak prevention.

Seasonal & Environment Servicing

In cold climates below -40°C, install the specific heater and cold-start kit for the SA6D140E-3G-7. Use low-viscosity engine oil and fuel additives to prevent gelling in winter operations. In high-temperature environments, frequently clean radiator and oil cooler fins to maintain heat exchange efficiency. Check the oil cooler thermo valve operation to ensure proper warm-up and cooling. Adjust track tension and undercarriage components frequently in abrasive, dusty conditions to accelerate wear.

SA6D140E-3G-7(S/N 110001-UP) common service parts

Part number	Part	Notes
6217-71-6210	Head,Fuel Filter	Fuel system service	Check fitment →
6217-71-6211	Head, Fuel Filter	Fuel system service	Check fitment →
ND092220-0040	Filter,Fuel	Fuel system service	Check fitment →
600-185-6100	Element Assembly, Air Cleaner	Air intake service	Check fitment →
7861-93-1420	Sensor,Air Filter Clogging	Air intake service	Check fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

SA6D140E-3G-7(S/N 110001-UP) fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
CA115	Engine crankshaft speed sensor and backup speed sensor failure	Faulty speed sensor, broken wiring harness, or corroded connector at the pin connector	Replace the speed sensor and verify voltage at the pin connector
CA451	Common rail pressure sensor feedback value too high	Malfunction in the rail pressure sensor or actual overpressure condition in the fuel system	Diagnose the fuel rail pressure sensor and check pump lines
CA122	Intake air pressure sensor feedback voltage too high	Faulty intake pressure sensor or wiring issue	Verify the intake pressure sensor and wiring integrity
CA123	Intake air pressure sensor feedback voltage too low	Sensor short circuit or airflow restriction	Check for a sensor short or inspect for airflow restrictions
CA441	Battery voltage too low	Weak battery, faulty alternator, or voltage regulator issue	Replace the alternator or battery and check the voltage regulator
CA442	Battery voltage too high	Faulty alternator or voltage regulator causing overcharging	Replace the alternator or battery and check the voltage regulator
CA234	Engine overspeed	Throttle calibration error, engine load cycle issue, or operator misuse	Verify throttle calibration and review engine load cycles
CA111	Internal engine controller fault	Critical failure within the Electronic Control Module (ECM)	Replace or reprogram the ECM
CA153	Intake air temperature sensor feedback voltage too high	Faulty intake air temperature (IAT) sensor	Replace or test the IAT sensor
CA154	Intake air temperature sensor feedback voltage too low	Faulty intake air temperature (IAT) sensor or short circuit	Replace 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.

SA6D140E-3G-7(S/N 110001-UP) attachments & work tools

Hydraulic Excavator Attachments

Compatible with the PC600-6 and PC600-7 series, which utilize the SA6D140E-3 engine. Typical bucket capacities range from 3.2 to 3.6 cubic yards (2.4 to 2.8 cubic meters) for standard digging applications. The machine provides 216.7 gallons per minute (820 liters per minute) of hydraulic flow to support high-demand tool operation.

Wheeled Loader Attachments

Fits the WA500-3 and WA500-3H wheel loaders equipped with the SA6D140E-3 engine. Standard bucket sizes are approximately 4.6 cubic yards (3.5 cubic meters) for general material handling. Hydraulic circuit configurations support quick coupler systems and auxiliary lines for specialized tooling.

Crawler Dozer Attachments

Applies to the D155AX-5 and D275A dozers powered by the SA6D140E-3 or SAA6D140E-3 engines. Blade configurations include standard straight (S) and semi-U (SU) blades with widths varying by model series. Ripper options are available for heavy-duty ground preparation, requiring specific hydraulic kit arrangements.

Articulated Dump Truck Attachments

Used in the HM350-1L and HM400-1 articulated dump trucks featuring the SA6D140E-3 engine. The primary attachment is the high-capacity dump body designed for haulage operations. No external work tools are typically offered; the body is the integral functional component.

All SA6D140E-3G-7(S/N 110001-UP) assemblies by section

Every catalogued assembly group for the Komatsu SA6D140E-3G-7(S/N 110001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : After Cooler Water Piping

01***16	Bolt - Starting Motor Ground Cable	1
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	1
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Air Cleaner (Inner Parts)(#110001-110670)

60***10	Cover Assembly	1
60***71	O-Ring	1
60***00	Element Assembly, Air Cleaner	1
60***50	Valve, Evacuator	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Air Cleaner (Inner Parts)(#110671-)

60***10	Cover Assembly	1
60***71	O-Ring	1
60***00	Element Assembly, Air Cleaner	1
60***50	Valve, Evacuator	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Air Cleaner(#110001-110670)

01***30	Bolt,(With Body Positioner)	3
01***16	Bolt - Starting Motor Ground Cable	1
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	3

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Air Cleaner(#110671-)

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	3
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	6
01***35	Bolt, Mount Bracket To Floor	4

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Air Intake Manifold And After Cooler

01***45	Bolt,(With Water Separator Type)	8
01***12	Bolt,(See Fig. K0210-16a0)	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	4
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	4

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Alternator (35a) (Hardening Pulley) (Inner Parts)

60***11	Alternator A. (35a)	1
KD***70	Bushing,Insulate	1
KD***40	Bushing,Insulate	1
KD***30	Collar,Insulate	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Alternator Mounting (35a) (Hardening Pulley)(#110495-)

01***20	Bolt, Wiring Harness Mounting Bracket	3
01***60	Bolt,For Weight Adjusting Bolt	1
01***20	Screw	2
01***60	Screw	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Camfollower

04***12	Ring, Retaining	4
61***30	Pin,Dowel	12
61***20	Ball	1
62***10	Cam Follower Assembly	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Camfollower Cover

61***91	Packing,(See Fig.A2060)	9
62***10	Cover, Camfollower	3
62***71	Screw	9
62***60	O-Ring,(See Fig.A2060)	3

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Camshaft

01***20	Bolt (M12-1.75x20)	2
04***25	Key, Plain Woodruff	1
62***12	Camshaft Assembly	1
62***20	Gear, Camshaft (Left Hand)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Caution Plate

62***60

Plate,Japanese

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Common Rail (Inner Parts)

62***11	Rail Ass'Y,(See Fig.A4010-E3u9)	1
ND***20	Picco Ring	7
ND***40	Limiter Assembly, Fuel Pressure	1
ND***40	Limiter Ass'Y,Fuel Flow	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Cooling Fan

01***35	Bolt, Mount Ground Driven Steering Pump	6
60***60	Fan, Cooling	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Corrosion Resistor

01***16	Bolt - Starting Motor Ground Cable	1
01***35	Bolt, Mount Bracket To Floor	4
01***00	Bolt (M10-1.50x100)	1
01***80	Bolt	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Crank Pulley(#110495-)

04***24	Pin,Dowel (For No.3 Housing)	1
62***20	Bolt	6
62***20	Pulley	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Crankshaft

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Cylinder Block

01***25	Screw	12
01***45	Washer,(Without R.O.P.S.)	14
01***32	Washer, (Without Emergency Steering)	12
04***14	Pin, Dowel	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Cylinder Block Cover And Oil Filler (With Water Temperature Sensor)

01***50	Bolt,(Spark Arrester Spec.)	12
01***25	Bolt,(Without Rops Guard? Canopy)	4
01***16	Bolt - Starting Motor Ground Cable	2
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	4

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Cylinder Block Gasket Kit

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Cylinder Head Gasket Kit

02***75	O-Ring,(See Fig.A1310)	2
07***25	O-Ring,(For Pc1800e-6)(See Fig.A3110)	6
07***11	O-Ring,(See Fig.A4210)	6
07***18	O-Ring,(See Fig.A4210)	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Cylinder Head(#110150-)

01***20	Bolt (M10-1.75x120)	6
01***45	Washer, Spring	36
07***25	O-Ring,(For Pc1800e-6)(See Fig.A3110)	1
07***08	Plug (Kit)	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Engine Mounting(#110495-)

62***60

Support,Front

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Exhaust Manifold

01***55	Screw	2
01***00	Screw	22
07***08	Plug,(For W/O. Corrosion Resistor)	1
61***20	Spacer,(For Shipping)	22

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fan Drive(#110495-)

01***16	Bolt - Seat And Tether Belt Mounting	6
01***20	Bolt, Wiring Harness Mounting Bracket	2
01***00	Bolt,For Weight Adjusting Bolt	3
01***25	Bolt	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fan Pulley (Non Hardening)(#110495-)

01***30	Bolt,(With Body Positioner)	6
04***63	V-Belt Set,(High Speed Pulley) (E/J)	1
62***20	Pulley	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Flywheel

61***51	Gear, Ring	1
62***50	Bolt	6
62***00	Flywheel Assembly	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Flywheel Housing(#110495-)

01***45	Capscrew - M16	8
01***60	Capscrew	2
01***12	Bolt,(See Fig. K0210-16a0)	1
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Front Cover (Air Compressor Spec.)

07***16	Plug, Expansion	4
62***21	Cover, Front	1
62***22	Cover,Front	1
67***21	Seal? Front,(See Fig.A2040)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Front Cover Mounting And Breather

01***16	Bolt - Box Mounting	2
01***90	Capscrew	2
01***80	Bolt,For Weight Adjusting Bolt	1
01***90	Bolt,For Weight Adjusting Bolt	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Front Power Take Off Cover (For Compressor Less)

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
01***95	Bolt,(For Shipping)	2
01***15	Bolt	1
01***08	Nut,See Fig. K4010-04a0	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#110495-110672)

78***02	Controller	1
78***00	Controller	1
(7***3)	Controller	1
(7***5)	Controller	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#110673-)

78***00

Controller

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Filter

01***16	Bolt - Starting Motor Ground Cable	1
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
01***35	Bolt, Mount Bracket To Floor	4
01***45	Bolt, Bracket Mounting	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Injector

01***10	Bolt - Relay And Flasher Mounting	6
01***35	Bolt	6
01***70	Bolt	6
07***11	O-Ring,(See Fig.A4210)	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Piping

01***25	Screw	4
01***30	Bolt,See Fig. K4010-17a0	14
01***35	Bolt	7
01***16	Bolt, Mount Solenoid Valve	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Pump Supply And Return Piping

01***30	Bolt,See Fig. K4010-17a0	6
01***35	Bolt	2
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Return

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	5
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	1
07***12	Gasket,(Without Air Compressor Type) (K2)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Supply Pump (Feed Pump) (Inner Parts)

ND***70	Washer,Union	6
ND***10	Spring, Check Valve	2
ND***42	Screw	1
ND***40	Filter,Fuel	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Supply Pump (Pump) (Inner Parts)

62***20	Fuel Pump Assembly	1
ND***70	Washer,Union	5
ND***60	Screw	1
ND***10	Screw	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Supply Pump And Common Rail Mounting

01***35	Bolt,(F4320-52a0 -5 )	4
01***11	Nut (Op)	1
01***45	Washer,(Except Pll)	1
01***32	Washer,(With Auto Emergency Steering)	4

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Supply Pump Bracket And Connection Cover

01***12	Bolt,(See Fig. K0210-16a0)	4
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	4
01***20	Bolt - Mount Risers To Cab Floor	2
01***08	Nut,See Fig. K4010-04a0	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Fuel Supply Pump Lubricator

07***12	Gasket,(Without Air Compressor Type) (K2)	2
07***10	Screw, Banjo Connector (M10-1.25x20)	1
62***20	Tube, Supply	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Head Cover

62***10	Cover, Cylinder Head	6
62***20	Gasket,(See Fig.A1110)	6
62***30	Gasket (K1)	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Head Cover Bolt

01***55

Screw

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Heat Shield(#110113-)

01***16	Bolt - Starting Motor Ground Cable	2
01***15	Bolt	3
01***50	Bolt (M10-1.50x150)	1
01***06	Nut	5

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Idler Gear

01***30	Bolt - M8 X 30lg	6
61***60	Pin, Dowel	1
61***22	Bolt	1
62***22	Plate, Thrust	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Muffler

01***35	Bolt	6
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***40	Bolt,(Shim 3-Piece)	8
07***08	Plug,(Without Lock-Up), Plug	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Name Plate And Caution Plate (English)

04***50	Screw	4
09***45	Plate? Name,(Limited Supply)	1
60***40	Plate? Name,(Limited Supply)	1
62***31	Decal, High Fuel Pressure	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Oil Cooler

01***20	Bolt, Wiring Harness Mounting Bracket	2
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	13
01***60	Bolt - Upper Cooler Inlet Tubemounting	2
01***90	Bolt,(For Large Fan)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Oil Filter

01***35	Bolt, Mount Bracket To Floor	2
01***60	Bolt (M10-1.50x160)	2
07***45	O-Ring,(For Wt800e-1) (See Fig.A3110)	1
07***60	O-Ring,(Hd325?Hm400?Pc750?800)(A2041)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Oil Level Gauge(#110495-)

61***20	Collar	1
61***30	Nut,(For Shipping)	1
62***10	Gauge,Oil Level	1
62***10	Guide, Oil Gauge	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Oil Pan And Suction Tube(#110495-)

01***25	Bolt,(For Canvas Canopy?Head Guard)	1
01***30	Bolt,(With Body Positioner)	1
01***12	Bolt,(See Fig. K0210-16a0)	3
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	37

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-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
01***32	Washer,(Not Used With Emergency Str.)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Piston

02***13	Pin, Dowel	2
04***20	Ring, Retaining	12
62***10	Bolt	2
62***40	Bearing Assembly	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Rocker Arm

01***08	Nut,R.H. Thread	2
01***32	Washer, (Without Emergency Steering)	6
04***14	Pin, Dowel	18
04***17	Ball,Detent	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Starting Motor (11kw) (Inner Parts)(#110001-111453)

60***21	Starting Motor Assembly (11kw)	1
KD***40	Spring,Spring	4
KD***57	Bearing, Ball, Front	1
KD***30	Armature Assembly	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Starting Motor Mounting (11kw)

01***40	Bolt (Kit)	3
01***16	Bolt - Starting Motor Ground Cable	1
08***19	Band,(Without Air Conditioner)	1
08***10	Bracket, Bucket Position Sensor	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Thermostat And Air Vent(#110495-)

01***25	Bolt,(For Canvas Canopy?Head Guard)	2
01***16	Bolt - Starting Motor Ground Cable	1
01***65	Screw	4
01***80	Bolt	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Turbocharger (Ktr110l-3h4e) (Inner Parts)

01***16	Bolt	4
01***16	Bolt	8
04***08	Pin, Dowel	1
04***50	Screw	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Turbocharger And Oil Piping

01***35	Bolt, Cover	1
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	4
01***35	Bolt, Mount Bracket To Floor	3

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Vibration Damper

01***30	Bolt,(Not Used When Towing Winch)	6
01***25	Bolt,L.H. (For Add. Air Compressor)	6
01***32	Washer,(Not Used With Emergency Str.)	6
62***00	Damper Assembly	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Water Line Plug (Without Corro.Rstr.)(#112318-)

01***75	Bolt	1
07***12	Gasket,(Without Air Compressor Type) (K1)	3
07***00	Valve,Drain	1
60***20	Plug,(For Shipping)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Water Pump Gasket Kit

02***37	O-Ring,(For Pc750?1800) (A5010)	2
07***45	O-Ring,(F4320-61a0 -16 ), O-Ring; Was 07000-02145	1
07***70	O-Ring,(For Pc1800e-6)(See Fig.A2041)	1
07***15	O-Ring,(F4320-57a0 -11 )	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Water Pump(#110495-)

01***80	Bolt (M10-1.50x80)	1
01***95	Bolt,(For Shipping)	3
01***30	Bolt	3
01***80	Bolt (M10-1.50x80)	3

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Wiring (1/3) Switch And Heater(#110495-)

01***20	Bolt,(Forwarded Individually Parts)	4
01***55	Bolt, Mount Dryer To Bracket And Frame	2
01***75	Bolt	2
01***06	Nut	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Wiring (2/3) Fuel Injector(#110495-)

01***25	Bolt - Relay Mounting	1
01***40	Bolt,(Shim 3-Piece)	1
04***10	Clip,(With Accumulator)	2
04***10	Clip	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : Sa6d140e-3g-7(S/N 110001-Up) : Engine : Wiring (3/3) Sensor(#110495-)

01***40	Bolt (Op)	1
01***16	Bolt - Starting Motor Ground Cable	6
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	1

See all parts with full part numbers in Heavy Parts AI →

SA6D140E-3G-7(S/N 110001-UP) serial number reference

The PIN plate is typically located on the right-hand side of the cab on the lower frame, near the front idler or beneath the operator's window. The prefix is the first three characters of the 17-character ISO PIN stamped on this plate.

Prefix	Identifies	Notes
SA6D140E-3G-7	Engine Model	SA6D140E-3G-7 S/N 110001-UP engines. Identifies the specific engine variant fitted to the machine family. Source: published references catalog listing and SoonParts application data.
SAA6D140E-3G-7	Engine Model	SAA6D140E-3G-7 S/N 110001-UP engines. Identifies the specific engine variant fitted to the machine family. Source: SoonParts application data.

Frequently asked questions

What is the engine model for the Komatsu SA6D140E-3G-7?

The engine model is the SA6D140E-3G-7, a 6-cylinder, turbocharged, aftercooled diesel engine from the 140-3 Series.

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

Operating weight varies by configuration and attachment. For the PC600-7 excavator, it is approximately 57,420 lb (26,045 kg). For the D155AX-5 bulldozer, it is approximately 77,160 lb (35,000 kg). Values vary by configuration/series.

What engine replaced the SA6D140E-3G-7?

The SAA6D140E-7 series engine replaced the SA6D140E-3G-7 to meet newer emissions regulations and improve fuel efficiency.

What SA6D140E-3G-7(S/N 110001-UP) owners discuss

What is the net horsepower output of the Komatsu SA6D140E-3 engine when installed in a PC600-7 excavator?

The engine produces 287 kW (385 hp) at 1800 rpm in the PC600-7 configuration. This output provides increased hydraulic power compared to previous generations while reducing fuel consumption by 12% when using economy mode. The engine meets EC Stage II regulations. Output varies by configuration/series depending on the specific machine model and regional emissions package installed.

What are the known powertrain and hydraulic behaviors associated with the Komatsu 140-3 series engines?

Komatsu 140-3 series engines are noted for smooth operation and high fuel efficiency. A common industry observation is that the powertrain and hydraulic systems are designed to wear out simultaneously; if a hydraulic pump fails, the engine is often near the end of its service life. Early Dash 6 machines experienced valve problems, particularly on PC150 and PC120 models, leading to complete redesign of pump and valve combinations in later iterations.

What undercarriage or wear patterns are typical for machines powered by the SA6D140E-3 series?

Machines in this series, such as the D155AX-5 bulldozer and PC600-6/PC600-7 excavators, are heavy-duty earthmoving units. The line is characterized by complete machine wear patterns rather than isolated component failure. Resale value is often impacted by the simultaneous degradation of hydraulic pump and engine components. Track tension and undercarriage wear are critical maintenance points; machines that pull to one side often indicate track tension issues or debris packing rather than immediate travel motor failure.

What are the common electrical or sensor issues reported for the SA6D140E-3 series?

The engine control unit (ECU) may trigger derated mode and throw low fuel pressure codes if the low-pressure side is restricted or if sensors fail. Specific error codes include [E-79] for Common Rail Fuel High Pressure Abnormality 1 and [E-7A] for Common Rail Fuel High Pressure Abnormality 2. Engine revolution speed sensors are critical for operation; failure can lead to starting issues or derating. Multiple fault codes often point to battery state, chassis grounds, or connector integrity rather than individual sensor failure.

What should be checked when buying a used machine with the SA6D140E-3G-7 engine (S/N 110001-UP)?

Verify the exact serial number prefix and suffix to confirm the engine variant, as the SA6D140E-3G-7 is used in various models including the PC600-7 and D155AX-5. Check for signs of simultaneous hydraulic and engine wear, as Komatsu components often fail together. Inspect the cooling package (radiator, charge-air cooler, hydraulic oil cooler) for packed debris between heat exchangers. Test hydraulic performance cold and hot to identify internal leakage that worsens with temperature. Verify battery load capacity and main starter cable integrity, as voltage collapse during cranking is a common false indicator of starter failure.

What are the key maintenance intervals and fluid specifications for the SA6D140E-3 series?

Komatsu specifies Komatsu Care maintenance programs for hydraulic oil, engine oil, and final-drive fluids. Use Komatsu EO, TO, or AXO hydraulic oils as specified by the machine's operating environment. Engine oil specifications vary by configuration/series and regional requirements; consult the operation and maintenance manual for the exact grade. The oil cooler thermo valve cracks open at 85°C (185°F) and is fully open at 100°C (212°F) with a lift of 8 mm. Regularly check the fuel water separator and air intake hoses for leaks, as air entering the fuel supply is a primary cause of no-start conditions.

How does the SA6D140E-3 engine performance curve behave under load?

The engine is designed to maintain RPM under load, but significant RPM drop during heavy digging indicates either hydraulic system overload or engine power loss. If engine speed remains normal while hydraulic movements weaken, the hydraulic system is the suspect. If engine speed drops heavily when hydraulics are engaged, the engine may be unable to produce expected power or the hydraulic load is excessive. Fuel consumption is reduced by 12% in economy mode, but actual burn rates vary by configuration/series based on attachment package and duty cycle.

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

Need a specific SA6D140E-3G-7(S/N 110001-UP) part?

Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.

Search parts in the app