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

Maintenance schedule, common problems & OEM parts breakdown

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

The Komatsu SA6D140E-3C-7 engine powers heavy-duty construction machinery, including the PC600-7 hydraulic excavator, D155AX-5 bulldozer, and WA500-3 wheel loader. This six-cylinder, turbocharged, aftercooled diesel engine delivers 385 hp at 1800 rpm and meets EC Stage II emissions regulations. Production for this specific serial range (110001-UP) spans the mid-2000s to early 2010s. It serves as a successor to the SA6D140E-2 series and is often replaced by the SAA6D140E-5 or SAA6D140E-6 in newer machine generations. Configurations vary by application, with specific mounting dimensions and accessory drives for excavators, dozers, and loaders.

Across generations, the SA6D140E-3 series introduced improved fuel efficiency and durability compared to its predecessors, utilizing a common rail fuel system for better atomization. The engine remains significant in the used and parts market because it powers high-volume models like the PC600-7 and D155AX-5, which are still widely active in earthmoving and mining. Its robust block design and availability of overhaul components make it a cost-effective option for fleet maintenance. The engine's widespread use ensures that aftermarket support and genuine Komatsu parts remain accessible for long-term serviceability.

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

Engine

Model	SA6D140E-3C-7
Series/Generation	SA6D140E-3 (Build 12D)
Net Power	287 kW (385 hp) @ 1800 rpm
Gross Power	252 kW (338 hp) @ 1900 rpm
Displacement	15.2 L (930.1 cu in)
Cylinders	6
Emissions Tier	EC Stage II

Weights

Operating Weight	56,478 kg (124,520 lb)
Shipping Weight	Not documented for this exact serial range — verify with your dealer
Ground Pressure	100 kPa (14.5 psi)

Dimensions

Transport Length	12.80 m (42.02 ft)
Transport Width	3.90 m (12.79 ft)
Transport Height	4.30 m (14.10 ft)
Track Gauge	2.59 m (8.50 ft)
Ground Clearance	0.78 m (2.56 ft)

Performance

Travel Speed	4.90 km/h (3.05 mph)
Drawbar Pull	414.7 kN (93,255.5 lbf)
Gradeability	Not documented for this exact serial range — verify with your dealer

Service Capacities (Summary)

Fuel Tank	880 L (232.5 gal)
Hydraulic System	360 L (95.2 gal)
Engine Oil	37 L (9.8 gal)
Cooling System	57 L (15.1 gal)

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

Komatsu SA6D140E-3C-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 secure cap. Drain water from fuel separator. Check DEF level on Tier 4 machines. Check air filter restriction indicator.
Every 250 h	Change engine oil and filter. Grease all points on boom, stick, bucket, and swing bearing. Inspect air cleaner element. Inspect belts and hoses for wear. Check fluid levels for hydraulic and cooling systems. Perform visual walk-around inspection.
Every 500 h	Replace fuel filter and drain water separator. Replace hydraulic return filter. Test battery and alternator load. Test coolant SCA concentration. Collect KOWA oil sample for analysis. Perform detailed undercarriage visual inspection.
Every 1,000 h	Replace hydraulic oil. Change final drive oil on both sides. Inspect turbocharger condition. Measure wear on structural components. Check valve adjustment status. Inspect swing machinery oil level.
Every 2,000 h	Flush and replace coolant. Service transmission components. Perform comprehensive component evaluation. Inspect KDPF system. Replace worn belts and hoses. Torque ROPS and cutting edge bolts.

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

Predictive Maintenance & Fluid Analysis

Utilize KOWA fluid analysis at every 500-hour interval to monitor wear metals and contamination. Check coolant SCA concentration at 500 hours to prevent liner cavitation. Monitor engine oil viscosity and fuel dilution during oil changes. Inspect hydraulic oil particle count to detect pump or valve wear early. Track DEF levels daily to ensure SCR system functionality. Analyze final drive oil for gear wear indicators at 1000-hour intervals.

Corrective & Common Repairs

Address turbocharger KTR110L boost leaks if exhaust smoke increases. Replace fuel injectors if cylinder misfires or power loss occurs. Inspect cylinder liners for scoring or excessive blow-by. Check the oil cooler thermo valve for proper cracking at 85°C. Replace worn piston rings if compression drops below specification. Inspect the flywheel ring gear for tooth damage during clutch service.

Overhaul & Rebuild Points

Plan cylinder head resurfacing if gasket failure or warping occurs. Replace cylinder liners and piston kits when bore wear exceeds limits. Inspect the crankshaft main bearings for scoring or excessive clearance. Check the camshaft lobes for wear during valve train service. Replace the entire turbocharger assembly if shaft play is detected. Rebuild the fuel injection pump if high-pressure lines show irregular flow.

Seasonal & Environment Servicing

Check coolant glycol concentration before winter to prevent freezing. Inspect heater core and thermostat operation for cold starts. Clean radiator and oil cooler fins frequently in dusty environments. Use lower viscosity engine oil in extreme cold for easier starting. Inspect air filter restriction indicator more often in high-dust conditions. Verify battery hold-down and terminal cleanliness in humid or coastal areas.

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

Part number	Part	Notes
ND092220-0040	Filter,Fuel	Fuel system service	Check fitment →
6217-71-6211	Head, Fuel Filter	Fuel system service	Check fitment →
600-211-1340	Cartridge, Oil Filter	Lubrication service	Check fitment →
6162-53-5430	Packing,Oil Filter And Piping	Lubrication service	Check fitment →
6217-51-5111	Head,Oil Filter	Lubrication service	Check fitment →

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

Code	Meaning	Likely cause	What to do
CA115	Engine crankshaft speed sensor failure	Broken sensor, wiring issue, or connector corrosion	Replace the speed sensor and verify the voltage at the pin connector
CA451	Common rail pressure sensor feedback value too high	Malfunction in the rail sensor or actual overpressure condition	Diagnose the fuel rail pressure sensor or pump lines
CA234	Engine overspeed	Throttle calibration error, engine load cycle issue, or operator misuse	Verify throttle calibration and engine load cycle
CA111	Internal engine controller fault	ECM internal abnormality	Replace or reprogram the ECM
CA122	Intake air pressure high voltage	Intake pressure sensor malfunction or wiring issue	Verify the intake pressure sensor and wiring
CA441	Battery voltage too low	Weak battery or alternator failure	Replace the alternator or battery and check the voltage regulator
AA10NX	Air cleaner clogging	Blocked air filter element	Replace the air filter
B@BCNS	Engine coolant overheating	Radiator blockage, fan belt failure, or low coolant level	Check radiator fins, fan belt, and coolant level
CA2311	IMV solenoid valve failure	Faulty IMV solenoid or wire harness issue	Replace the IMV solenoid or inspect the wire harness
CA153	Intake air temperature sensor high error	Intake air temperature sensor malfunction	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-3C-7(S/N 110001-UP) attachments & work tools

Excavator Buckets

Typical sizes for the PC600-6/7 class range from 1.5 to 3.6 cubic yards (1.1 to 2.8 cubic meters). Factory configurations often include standard rock buckets with side cutters and heavy-duty variants with reinforced wear plates and teeth for abrasive conditions.

Dozer Blades

The D155AX-5 and D275A-5 dozers utilize semi-U or U-blades with capacities around 10 to 12 cubic yards (7.6 to 9.2 cubic meters). Options include straight tilt (ST) blades for grading and universal (U) blades for high-volume earthmoving, often equipped with single or tandem shrouds.

Loader Buckets

The WA500-3 and WA500-3H wheel loaders are equipped with buckets ranging from 5 to 7 cubic yards (3.8 to 5.4 cubic meters). Configurations vary from general-purpose rock buckets with side cutters to specialized coal or light-material buckets with extended volume and reduced weight.

Coupler Systems

Hydraulic quick couplers are standard for excavator and loader attachments, allowing rapid tool changes. The mounting interface is specific to the machine's stick and boom geometry, requiring verification of pin diameter and hydraulic flow rates for proper operation.

Hydraulic Circuit Options

Tools requiring auxiliary flow, such as breakers or mulchers, utilize the machine's secondary hydraulic circuit. Factory options include high-flow pumps and specific valve configurations to match the tool's pressure and flow requirements, ensuring optimal performance and system protection.

Guarding and Protection

Factory guarding options include rock shields for the radiator and oil cooler, undercarriage guards for dozers, and cab guards (ROPS/FOPS) for operator protection. These are often specified based on the intended application, such as mining or heavy demolition.

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

Every catalogued assembly group for the Komatsu SA6D140E-3C-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-3c-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

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

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

60***70	Nut, Wing	1
60***01	Element Ass'Y,Outer	1
60***20	Nut, Wing	1
60***30	Clip,Snap	1

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Komatsu : Sa6d140e-3c-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	10
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	4

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Alternator (60a) (Inner Parts)

60***10	Alternator A. (60a)	1
KD***70	Bushing,Insulate	1
KD***40	Bushing,Insulate	1
KD***80	Bearing, Ball	1

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

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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Alternator Mounting (60a) (Hardening Pulley)

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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Common Rail (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111639-)

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

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

60***20

Fan,(High Speed)

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

60***20

Fan,Reversible

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

01***16	Bolt - Starting Motor Ground Cable	1
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	4
01***35	Bolt, Mount Bracket To Floor	4
01***00	Bolt (M10-1.50x100)	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Corrosion Resistor(#111803-)

01***35	Bolt, Mount Bracket To Floor	3
01***00	Bolt (M10-1.50x100)	1
07***21	O-Ring	1
07***12	Gasket,(Without Air Compressor Type) (K1)	8

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

01***85	Bolt	6
01***45	Washer,(For Travel Motor) (Not Show)	6
04***24	Pin,Dowel (For No.3 Housing)	1
62***30	Pulley? Hardening	1

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

04***28	Pin, Dowel - Transmission Case, Pin-Dowel	1
61***30	Key Parallel	1
62***00	Bearing Assembly	1
62***10	Main Bearing Assembly	7

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Komatsu : Sa6d140e-3c-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

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

01***50	Bolt,(Spark Arrester Spec.)	12
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	7
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	6
01***35	Bolt, Mount Bracket To Floor	4

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

07***60	O-Ring,(For Pc750?800?1800) (A2610)	1
07***50	O-Ring,Front Cover Plate	1
07***42	O-Ring,(See Fig.A3310)	1
07***21	O-Ring,(Fig.262-53)(Fig.262a-57)	1

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Cylinder Head(#110001-110149)

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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Engine Mounting

62***10

Support,Front

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Exhaust Pipe

62***21

Pipe,Exhaust

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Fan Belt

04***74

V-Belt Set,(Except Japan)

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

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

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

01***50	Capscrew	8
01***65	Capscrew	2
01***12	Bolt,(See Fig. K0210-16a0)	1
01***16	Bolt - Starting Motor Ground Cable	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Front Cover (Front Power Take Off Spec.) (With Sleeve)

07***16	Plug, Expansion	6
62***70	Sleeve	1
62***31	Cover,Front	1
62***32	Cover,Front	1

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

01***16	Bolt - Box Mounting	2
01***90	Bolt,For Weight Adjusting Bolt	11
01***00	Bolt,For Weight Adjusting Bolt	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	6

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Front Power Take Off (Non Drive Spec.)

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	3
62***30	Gasket,(D155ax-5a)	1
62***40	Plate	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Front Power Take Off (Sandy And Dusty Spec.)

01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	3
04***18	Ring, Snap	1
06***04	Bearing,Ball	2
07***60	O-Ring,(For Pc750?800?1800) (A2610)	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#110001-110156)

78***00	Controller	1
78***02	Controller	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#110157-110803)

78***02	Controller	1
78***04	Controller	1
78***06	Controller	1
(7***3)	Controller	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#110804-)

78***06	Controller	1
78***07	Controller	1

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

Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-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

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

01***30	Bolt,See Fig. K4010-17a0	4
01***35	Bolt	2
01***16	Bolt - Starting Motor Ground Cable	1
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Fuel Pump Supply And Return Piping (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd)(#111639-)

01***30	Bolt,See Fig. K4010-17a0	4
01***35	Bolt	2
01***16	Bolt - Starting Motor Ground Cable	1
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1

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

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	2
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	5
01***45	Bolt, Bracket Mounting	2

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Fuel Supply Pump (Feed Pump) (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111639-)

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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Fuel Supply Pump (Pump) (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111639-)

62***30	Fuel Pump Ass'Y	1
ND***70	Washer,Union	5
ND***60	Screw	1
ND***10	Screw	1

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Fuel Supply Pump And Common Rail Mounting (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd)(#111639-)

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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-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

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

01***55

Screw

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

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	12
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	2
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	3
01***65	Bolt, Mount Tube To Divider Valve	1

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Komatsu : Sa6d140e-3c-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

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

01***45	Capscrew	8
01***25	Bolt	2
01***30	Bolt	2
01***35	Bolt	2

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Name Plate (English)(#110001-110001)

04***50	Screw	4
09***40	Plate? Name,(Limited Supply) (English)	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Name Plate (For Eu)

04***50	Screw	4
62***31	Decal, High Fuel Pressure	1
62***70	Plate,Caution (Not Shown)	1
62***80	Plate,Caution (Not Shown)	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Name Plate And Caution (English) (Regulation Of Epa)

04***50	Screw	4
62***31	Decal, High Fuel Pressure	1
62***70	Plate,Caution (Not Shown)	1
62***80	Plate,Caution (Not Shown)	1

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Name Plate And Caution Plate (Japanese-English) (Regulation Of Epa And Eu)

04***50	Screw	4
61***10	Plate? License,(Limited Supply)	1
61***11	Plate? License,(Limited Supply)	1
61***20	Plate? Name,(Limited Supply)	1

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Komatsu : Sa6d140e-3c-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

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

01***16	Bolt - Starting Motor Ground Cable	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	10
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	2
01***60	Bolt - Upper Cooler Inlet Tubemounting	2

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

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
01***40	Bolt,(Shim 3-Piece)	1
01***08	Nut,See Fig. K4010-04a0	1
61***50	Boss,(Noise Abatement Part)	1

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

01***25	Bolt,(For Canvas Canopy?Head Guard)	1
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	42
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	1
01***08	Nut,See Fig. K4010-04a0	1

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Pre Filter Mounting (Poor Fuel Arrangement Spec.)(#111803-)

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	3
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	1
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	3
01***35	Bolt, Mount Bracket To Floor	6

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Spare Parts

04***74	V-Belt Set,(Except Japan)	1
60***40	Cartridge, Oil Filter	1
60***10	Cartridge (1-1/4),Fuel	1
62***40	V-Belt Set,Alternator Drive	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Starting Motor (11kw) (Inner Parts)(#110001-111449)

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

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Komatsu : Sa6d140e-3c-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 - Tie Hose To Wire Harness	1
08***10	Bracket, Bucket Position Sensor	1

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Komatsu : Sa6d140e-3c-7(S/N 110001-Up) : Engine : Tension Pulley

01***25	Bolt,(For Canvas Canopy?Head Guard)	2
01***30	Bolt,(Not Used When Towing Winch)	2
01***95	Capscrew - M12	1
01***05	Capscrew	1

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

01***16	Bolt - Starting Motor Ground Cable	1
01***50	Bolt,(See Fig.A4010-C3w6)	2
01***70	Screw	1
01***85	Bolt,(For Reversible Fan)	1

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Komatsu : Sa6d140e-3c-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

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Komatsu : Sa6d140e-3c-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

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

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

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

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Komatsu : Sa6d140e-3c-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

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

01***16	Bolt, Mount Solenoid Valve	2
01***20	Bolt,(Forwarded Individually Parts)	2
01***55	Bolt, Mount Dryer To Bracket And Frame	2
01***75	Bolt	2

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

01***25	Bolt - Relay Mounting	6
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
01***40	Bolt,(Shim 3-Piece)	1
01***45	Bolt, Bracket Mounting	1

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

01***12	Bolt,(With Speedometer)	1
01***16	Bolt - Starting Motor Ground Cable	5
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	3

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

The PIN plate is riveted to the right-hand side of the cab on the lower frame, typically just behind the front idler or beneath the operator's window. The engine serial number is stamped on the engine block, usually on the left side near the injection pump. Match the 3-character engine prefix (e.g., SA6D140E-3C-7) to the catalog serial range.

Prefix	Identifies	Notes
SA6D140E-3C-7	Engine Model	SA6D140E-3C-7(S/N 110001-UP) engine family. S/N 110001-UP. Tier 3 / Stage IIIA emissions. Dash-7 generation (approx. 2002–2007). Used in PC600-7, PC400-7, D155S-1, D155W-1, D275A-2, HM350-1L, DCA-400SSK2. Verify with dealer for specific machine application.

Frequently asked questions

What is the engine specification?

The Komatsu SA6D140E-3C-7 is a six-cylinder, turbocharged, and aftercooled diesel engine producing 385 hp at 1800 rpm. It features a 140 mm bore and 165 mm stroke, with a displacement of 930.1 cu in. The engine meets EC Stage II emissions regulations and includes a common rail fuel system.

What is the operating weight of the machine?

Operating weight varies by configuration and attachment. For the PC600-7 excavator, the weight ranges from 124,520 lb to 126,720 lb depending on the model variant. The D155AX-5 bulldozer and WA500-3 wheel loader have different weights based on their specific chassis and undercarriage setups.

What replaced the SA6D140E-3C-7?

The SA6D140E-3 series was succeeded by the SAA6D140E-5 and SAA6D140E-6 engines in newer Komatsu machine generations. These later engines offer improved emissions compliance and fuel efficiency while maintaining the same basic block architecture for parts commonality.

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