Komatsuengine(no series)
Komatsu SA6D140E-3H-7(S/N 110001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu SA6D140E-3H-7 is a 15.2-liter, six-cylinder, turbocharged diesel engine designed for heavy-duty construction applications. It powers the PC600-7 and PC600LC-7 hydraulic excavators, which operate in the 56,000 to 57,000 kg (124,500 to 126,700 lb) weight class. Production for this engine series spans the mid-2000s to early 2010s, serving as the predecessor to the SA6D140E-6 series found in later PC600-8 models. The engine delivers 287 kW (385 HP) at 1800 rpm and meets EC Stage II emissions regulations. Configurations include standard and long-reach variants for the PC600-7 series, with specific mounting dimensions varying between the D155AX-5 bulldozer and excavator applications.
Across the SA6D140E-3 generation, Komatsu introduced common-rail fuel injection systems to improve fuel efficiency and reduce emissions without sacrificing power. The SA6D140E-3H-7 variant specifically supports the PC600-7 series, which offered high digging force and operating efficiency. In the used and parts market, this engine remains critical because the PC600-7 excavator is a high-volume machine with extensive global deployment. The transition to the SA6D140E-6 series introduced Tier 4 Final/Stage V compliance, making the older SA6D140E-3H-7 engines valuable for operators seeking simpler maintenance profiles or retrofitting older fleets. Parts availability for the 140-3 series remains robust due to the engine's widespread use in excavators, wheel loaders, and dump trucks.
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-3H-7(S/N 110001-UP) specifications
Engine
| Model | SA6D140E-3H-7 |
| Series/Generation | SA6D140E-3 (Build 12D) |
| Net Power | 287 kW (385 hp) @ 1800 rpm |
| Displacement | 15.2 L (930.1 cu in) |
| Cylinders | 6 |
| Aspiration | Turbocharged with aftercooler |
| Emissions Tier | EC Stage II |
Weights
| Operating Weight | varies by configuration/series (124,520 lb / 56,478 kg for PC600-7; 126,720 lb / 57,480 kg for PC600LC-7) |
Dimensions
| Transport Length | varies by configuration/series (42.02 ft / 12.80 m for PC600-7; 38.81 ft / 11.83 m for PC600LC-7) |
| Transport Width | 12.79 ft / 3.90 m (width to outside of tracks) |
| Transport Height | varies by configuration/series (14.1 ft / 4.30 m for PC600-7; 15.09 ft / 4.60 m for PC600LC-7) |
| Track Gauge | 8.5 ft / 2.59 m |
| Ground Clearance | 2.56 ft / 0.78 m |
Performance
| Max Travel Speed | 3.05 mph / 4.9 km/h |
| Drawbar Pull | 93,255.5 lbf / 414,830 N |
| Swing Speed | 8.3 rpm |
Service capacities (summary)
| Fuel Tank | 232.5 gal / 880 L |
| Hydraulic System | 95.2 gal / 360 L |
| Engine Oil | 9.8 gal / 37 L |
| Cooling System | 15.1 gal / 57 L |
| Swing Drive | 3.5 gal / 13 L |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu SA6D140E-3H-7(S/N 110001-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-3H-7(S/N 110001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Komatsu Oil Wear Analysis (KOWA) at every 500-hour interval to monitor engine wear metals and hydraulic contamination. Check coolant SCA concentration at 500 hours to prevent liner cavitation in the SA6D140E-3H-7 block. Monitor DEF levels daily on Tier 4 compliant units to ensure SCR system functionality. Track fuel consumption trends to detect injector performance degradation early. Inspect the air filter restriction indicator before each shift to protect the turbocharger and aftercooler from abrasive dust ingestion.
Corrective & Common Repairs
Address PC600-7 specific failures by inspecting the fuel injection pump and injectors for high-pressure leaks common in the SA6D140E-3 series. Replace the oil cooler thermo valve if cracking temperature deviates from 85°C to prevent overheating. Check the engine revolution speed sensor for intermittent faults that cause RPM fluctuations. Inspect the hydraulic return filter for blockage, which can damage main pump seals. Verify turbocharger KTR110L shaft play and bearing condition to maintain boost pressure and fuel economy.
Overhaul & Rebuild Points
Plan inframe overhauls for the SA6D140E-3H-7 based on cylinder liner wear and piston ring clearance, typically occurring between 10,000 and 15,000 hours. Replace cylinder liners, pistons, and piston rings as a set to ensure proper compression. Inspect the crankshaft main and rod bearings for scoring or excessive clearance. Check the cylinder head gasket surface for warping and the valve seats for erosion. Use Komatsu genuine overhaul gasket kits to maintain seal integrity during reassembly.
Seasonal & Environment Servicing
In cold climates, verify the coolant glycol content and SCA levels to prevent block freezing and corrosion. Drain the fuel water separator daily to prevent ice formation in the common-rail system. Use low-viscosity engine oil during winter starts to ensure proper lubrication of the SA6D140E-3H-7 bearings. In dusty environments, clean the radiator and oil cooler fins frequently to maintain heat exchange efficiency. Inspect all hose clamps and air intake connections for tightness to prevent unfiltered air entry.
SA6D140E-3H-7(S/N 110001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6217-71-6211 | Head, Fuel Filter | Fuel system service | Check fitment → |
| ND092220-0040 | Filter,Fuel | Fuel system service | Check fitment → |
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 600-185-6100 | Element Assembly, Air Cleaner | Air intake service | Check fitment → |
| 600-211-1340 | 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-3H-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 interface | Inspect the sensor wiring and connectors; replace the speed sensor if voltage checks fail |
| CA111 | Engine controller internal fault (ECM critical internal failure) | Internal electronic failure within the Engine Control Module | Replace or reprogram the ECM |
| CA451 | Common rail pressure sensor feedback value too high | Malfunctioning rail pressure sensor or actual overpressure condition in the fuel system | Diagnose the fuel rail pressure sensor and check pump lines |
| CA452 | Common rail pressure sensor feedback value too low | Faulty rail pressure sensor or low fuel pressure supply | Diagnose the fuel rail pressure sensor and check pump lines |
| CA234 | Engine overspeed | Throttle calibration error, excessive engine load cycle, or operator misuse | Verify throttle calibration and review engine load cycles |
| 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 an airflow restriction |
| 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 | Failing alternator or voltage regulator sending excessive voltage | Replace the alternator or battery; check the voltage regulator |
| CA2311 | IMV (Idle Management Valve) solenoid valve failure | Failed IMV solenoid or damaged wire harness | Replace the IMV solenoid or inspect the wire harness |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
SA6D140E-3H-7(S/N 110001-UP) attachments & work tools
Hydraulic Excavator Attachments
The SA6D140E-3 engine powers the PC600-6 and PC600-7 series excavators, which utilize standard bucket configurations ranging from 3.2 to 4.6 cubic yards (2.4 to 3.5 cubic meters). Factory guarding options include heavy-duty side cutters and reinforced bucket lips for high-abrasion applications.
Wheeled Loader Attachments
The WA500-3 and WA500-3H wheel loaders are equipped with buckets sized between 3.6 and 4.6 cubic yards (2.7 to 3.5 cubic meters). Compatibility extends to multi-purpose and rock buckets, with mounting systems designed for the specific loader arm geometry of the WA500 series.
Crawler Dozer Attachments
The D155AX-5 and D275A-5 dozers utilize standard straight-blade and angle-blade configurations. Blade capacities vary by configuration, with standard blades offering approximately 16 to 18 cubic yards (12 to 14 cubic meters) of material movement.
Articulated Dump Truck Bodies
The HM350-1 and HM400-1 articulated dump trucks feature a standard body capacity of approximately 27 to 30 cubic yards (20 to 23 cubic meters). The body mounting system is integrated with the chassis frame, with options for high-dump configurations in specific mining variants.
Hydraulic System Configurations
Work tools require high-flow hydraulic kits compatible with the SA6D140E-3 engine's output, typically rated at 216.7 gallons per minute (820 liters per minute) for the PC600-7 series. Auxiliary hydraulic circuits are configured to support quick couplers and high-demand attachments like breakers.
All SA6D140E-3H-7(S/N 110001-UP) assemblies by section
Every catalogued assembly group for the Komatsu SA6D140E-3H-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-3h-7(S/N 110001-Up) : Engine : Air Cleaner(For Pc600?650-7)(#112158-)
| 60***10 | Cover Assembly | 1 |
| 60***71 | O-Ring | 1 |
| 60***00 | Element Assembly, Air Cleaner | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Air Intake Manifold And After Cooler(#110007-)
| 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 | 8 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Alternator (60a) (Sandy And Dusty Spec.) (Inner Parts)
| 60***70 | Alternator A. (60a),(See Fig.A6010-B4k6) | 1 |
| KD***70 | Bushing,Insulate | 2 |
| KD***40 | Bushing,Insulate | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Alternator (90a) (Inner Parts)
| 60***10 | Alternator A. (90a) | 1 |
| KD***02 | Bolt | 4 |
| KD***02 | Washer,Spring | 5 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Alternator (90a) (Sandy And Dusty Spec.) (Inner Parts)(#112158-)
| 60***10 | Alternator A. (90a),100a | 1 |
| KD***02 | Bolt | 4 |
| KD***02 | Washer,Spring | 5 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Alternator Mounting (60a)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
| 01***20 | Screw | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Alternator Mounting (60a) (Sandy And Dusty Spec.)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
| 01***20 | Screw | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Alternator Mounting (90a)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***50 | Capscrew | 3 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Alternator Mounting (90a) (Sandy And Dusty Spec.)(#112158-)
| 01***50 | Capscrew | 3 |
| 01***90 | Bolt,For Weight Adjusting Bolt | 1 |
| 01***60 | Screw | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Camfollower Cover
| 61***91 | Packing,(See Fig.A2060) | 9 |
| 62***10 | Cover, Camfollower | 3 |
| 62***71 | Screw | 9 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Common Rail (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#112158-)
| 62***11 | Rail Ass'Y,(See Fig.A4010-E3u9) | 1 |
| ND***20 | Picco Ring | 7 |
| ND***40 | Limiter Assembly, Fuel Pressure | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Common Rail (Regulation Of Epa And Eu 2nd) (Inner Parts)(#112158-)
| 62***11 | Rail Ass'Y,(See Fig.A4010-E3u9) | 1 |
| ND***20 | Picco Ring | 7 |
| ND***40 | Limiter Assembly, Fuel Pressure | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Cooling Fan
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 6 |
| 01***70 | Bolt - Accumulator Mounting Bracket | 6 |
| 60***16 | Fan,Cooling | 1 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Crank Pulley
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 62***20 | Bolt | 6 |
| 62***30 | Pulley,Non Hardening | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Crank Pulley (Sandy And Dusty Spec.)
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 62***20 | Bolt | 6 |
| 62***40 | Pulley? Hardening | 1 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Cylinder Block Cover And Oil Filler
| 01***50 | Bolt,(Spark Arrester Spec.) | 12 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 5 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 6 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Engine Mounting
| 01***10 | Screw | 5 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 7 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 7 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Exhaust Manifold
| 01***55 | Screw | 2 |
| 01***00 | Screw | 22 |
| 07***08 | Plug,(For W/O. Corrosion Resistor) | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fan Drive
| 01***16 | Bolt - Seat And Tether Belt Mounting | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***50 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fan Drive (Sandy And Dusty Spec.)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***50 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fan Pulley And V-Belt
| 01***60 | Bolt | 6 |
| 01***40 | Bolt (Op) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fan Pulley And V-Belt (Sandy And Dusty Spec.)
| 01***40 | Bolt (Op) | 6 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 6 |
| 01***32 | Washer,(With Auto Emergency Steering) | 6 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Flywheel
| 61***51 | Gear, Ring | 1 |
| 62***50 | Bolt | 6 |
| 62***00 | Flywheel Assembly | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Flywheel Housing
| 01***50 | Capscrew | 8 |
| 01***65 | Capscrew | 2 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Front Cover (Front Power Take Off Spec.)
| 07***16 | Plug, Expansion | 6 |
| 62***31 | Cover,Front | 1 |
| 62***32 | Cover,Front | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Front Cover Mounting And Breather
| 01***16 | Bolt - Box Mounting | 2 |
| 01***75 | Bolt - Tube Mounting | 1 |
| 01***90 | Bolt,For Weight Adjusting Bolt | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Front Power Take Off
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 3 |
| 04***18 | Ring, Snap | 1 |
| 06***04 | Bearing,Ball | 2 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#111971-)
| 78***00 | Controller | 1 |
| 78***01 | Controller | 1 |
| 78***02 | Controller | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#112158-)
| 78***01 | Controller | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Filter(#112158-)
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 01***40 | Screw | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Injector
| 01***10 | Bolt - Relay And Flasher Mounting | 6 |
| 01***35 | Bolt | 6 |
| 01***70 | Bolt | 6 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Pump Supply And Return Piping (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd)(#112158-)
| 01***30 | Bolt,See Fig. K4010-17a0 | 2 |
| 01***35 | Bolt | 2 |
| 01***40 | Screw | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Pump Supply And Return Piping (Regulation Of Epa And Eu 2nd)(#112158-)
| 01***30 | Bolt,See Fig. K4010-17a0 | 2 |
| 01***35 | Bolt | 2 |
| 01***40 | Screw | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Return(#112158-)
| 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 | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Supply Pump (Feed Pump) (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#112158-)
| ND***70 | Washer,Union | 6 |
| ND***10 | Spring, Check Valve | 2 |
| ND***42 | Screw | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Supply Pump (Feed Pump) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#112158-)
| ND***70 | Washer,Union | 6 |
| ND***10 | Spring, Check Valve | 2 |
| ND***42 | Screw | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Supply Pump (Pump) (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#112158-)
| 62***30 | Fuel Pump Ass'Y | 1 |
| ND***70 | Washer,Union | 5 |
| ND***60 | Screw | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Supply Pump (Pump) (Regulation Of Epa And Eu 2nd) (Inner Par Ts)(#112158-)
| 62***20 | Fuel Pump Assembly | 1 |
| ND***70 | Washer,Union | 5 |
| ND***60 | Screw | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Supply Pump And Common Rail Mounting (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd)(#112158-)
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***11 | Nut (Op) | 1 |
| 01***45 | Washer,(Except Pll) | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Fuel Supply Pump And Common Rail Mounting (Regulation Of Epa And Eu 2nd)(#112158-)
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***11 | Nut (Op) | 1 |
| 01***45 | Washer,(Except Pll) | 1 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Head Cover Bolt
| 01***55 | Screw | 18 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Heat Shield
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 3 |
| 01***35 | Bolt, Mount Bracket To Floor | 8 |
| 01***80 | Bolt (M10-1.50x80) | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Idler Gear
| 01***30 | Bolt - M8 X 30lg | 6 |
| 61***60 | Pin, Dowel | 1 |
| 61***22 | Bolt | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Muffler
| 01***30 | Bolt | 6 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***40 | Bolt,(Shim 3-Piece) | 2 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Oil Pan And Suction Tube
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 3 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Piston
| 02***13 | Pin, Dowel | 2 |
| 04***20 | Ring, Retaining | 12 |
| 62***10 | Bolt | 2 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Starting Motor (11kw) (For Pc600? 650-6) (Inner Parts)(#110976-111470)
| 60***21 | Starting Motor Assembly (11kw) | 1 |
| KD***40 | Spring,Spring | 4 |
| KD***57 | Bearing, Ball, Front | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Starting Motor Mounting (11kw) (For Pc600? 650-6?-7)(#110976-)
| 01***40 | Bolt (Kit) | 3 |
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 08***19 | Band - Tie Hose To Wire Harness | 1 |
Komatsu : Sa6d140e-3h-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 | 5 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Water Line Plug (Without Corro.Rstr.)(#112318-)
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 3 |
| 07***00 | Valve,Drain | 1 |
| 60***20 | Plug,(For Shipping) | 1 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Water Pump
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***80 | Bolt (M10-1.50x80) | 1 |
Komatsu : Sa6d140e-3h-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 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Wiring (1/3) Switch And Heater
| 01***20 | Bolt,(Forwarded Individually Parts) | 4 |
| 01***14 | Bolt - Fuel Sensor Mounting | 2 |
| 01***55 | Bolt, Mount Dryer To Bracket And Frame | 2 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Wiring (2/3) Fuel Injector
| 01***25 | Bolt - Relay Mounting | 6 |
| 01***14 | Bolt - Fuel Sensor Mounting | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 5 |
Komatsu : Sa6d140e-3h-7(S/N 110001-Up) : Engine : Wiring (3/3) Sensor
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
SA6D140E-3H-7(S/N 110001-UP) serial number reference
The PIN plate is located on the right-hand side of the cab on the lower frame, typically behind the front idler or beneath the operator's window. Read the three-character prefix at the start of the 17-character ISO PIN to identify the engine series and generation.
| Prefix | Identifies | Notes |
|---|---|---|
| H | SA6D140E-3H-7 | Serial range 110001-UP. Identified in engine parts catalog listings as a distinct variant within the SA6D140E-3 family. Verify with dealer for specific configuration details. |
Frequently asked questions
What is the engine specification for the Komatsu SA6D140E-3H-7?
The SA6D140E-3H-7 is a 15.2-liter, six-cylinder, turbocharged diesel engine producing 287 kW (385 HP) at 1800 rpm. It features a common-rail fuel injection system and meets EC Stage II emissions standards.
What is the operating weight of the machine powered by this engine?
The PC600-7 excavator, which uses the SA6D140E-3H-7 engine, has an operating weight ranging from 56,500 kg to 57,500 kg (124,520 lb to 126,720 lb) depending on the configuration and attachment package.
What engine replaced the SA6D140E-3H-7?
The SA6D140E-3H-7 was succeeded by the SA6D140E-6 series engine, which powers the PC600-8 excavator and meets stricter Tier 4 Final/Stage V emissions regulations.
What SA6D140E-3H-7(S/N 110001-UP) owners discuss
What is the net horsepower output of the Komatsu SA6D140E-3 engine when installed in a PC600-6 or PC600LC-6 excavator?
The engine provides 287 kW (385 HP) of net power. This output supports high hydraulic power and large digging force for the PC600-6 class machine. The engine meets EC Stage II regulations without sacrificing productivity. Fuel consumption is reduced by 12% when using the economy mode compared to standard operation. The exact horsepower may vary by configuration or series depending on the specific machine model and regional emissions package installed. Have your dealer verify the exact rating for your specific serial number and machine model.
What are the known powertrain and hydraulic behaviors associated with the SA6D140E-3 series in heavy-duty applications?
The SA6D140E-3 is a turbocharged, aftercooled diesel engine designed for high-output applications. In the PC600-6 excavator, it delivers 287 kW (385 HP) to drive the hydraulic system. The engine is paired with a Komatsu KTR110L turbocharger. The hydraulic system relies on the engine's power to generate large digging force and high operating efficiency. Common diagnostic patterns include checking if engine speed drops under load, which indicates the hydraulic system is placing excessive load on the engine, or if hydraulic movements are weak while engine speed remains normal, pointing to hydraulic system issues. The engine's performance is sensitive to air and fuel restrictions; clogged air filters or fuel filters can cause power loss during heavy digging loads. Have your dealer verify the specific hydraulic flow rates and engine torque curves for your machine configuration.
What undercarriage or wear patterns are typical for machines powered by this engine, such as the D155AX-5 bulldozer or PC600-6 excavator?
Machines equipped with the SA6D140E-3, such as the D155AX-5 bulldozer and PC600-6 excavator, operate in heavy earthmoving and excavation environments. Typical wear patterns include undercarriage component wear from high ground pressure and abrasive materials. Track tension must be monitored regularly to prevent repeated loosening or excessive wear. For the D155AX-5, the engine is mounted in a specific configuration with defined dimensions (e.g., length 1,499 mm for serials 110001–the OEM part reference, changing to 1,446 mm for serials the OEM part reference and up). Undercarriage alignment and roller condition are critical for maintaining travel speed and preventing side-pulling. Hydraulic system wear, particularly in pumps and control valves, can manifest as weakness when hot due to decreased oil viscosity. Have your dealer verify the specific undercarriage shoe width and track link specifications for your machine's operating weight class.
What are the common electrical or sensor issues reported for the SA6D140E-3 engine?
Common electrical issues include ECU derating modes triggered by low fuel pressure codes. Even if low-pressure side fuel pressure appears normal, the ECU may still detect a fault, leading to power loss. Error codes such as [E-79] (Common Rail Fuel High Pressure Abnormality 1) and [E-7A] (Common Rail Fuel High Pressure Abnormality 2) indicate high-pressure fuel system faults. Operators should check the battery state of charge, engine and chassis grounds, and main starter cables if the engine will not start. Faulty sensors, such as the fuel pressure sensor or transfer pump, are frequent culprits for derating. Replacing multiple sensors and relief valves may be necessary if the root cause is not identified. Have your dealer verify the specific sensor calibration values and wiring harness integrity for your machine.
What should be checked when buying a used machine with the SA6D140E-3 engine (S/N 110001-UP)?
When inspecting a used machine with the SA6D140E-3 engine, verify the serial number range to determine the correct engine configuration. For the D155AX-5 bulldozer, serials 110001–the OEM part reference use a different engine mounting dimension (1,499 mm length) compared to serials the OEM part reference and up (1,446 mm length). Check the oil cooler thermo valve cracking temperature (85°C) and fully open temperature (100°C) for proper cooling performance. Inspect the turbocharger (Komatsu KTR110L) for shaft play or damage. Verify the condition of the fuel injection pump and high-pressure fuel lines for leaks or wear. Check the hydraulic oil level and condition, as degraded oil can cause weak performance when hot. Ensure the ECU is not throwing derating codes related to fuel pressure or aftertreatment systems. Have your dealer verify the specific engine serial number and corresponding service manual for accurate diagnostics.
What are the key maintenance intervals and fluid specifications for the SA6D140E-3 engine?
The Komatsu SA6D140E-3 engine requires specific fluid types and maintenance intervals as outlined in the factory spec sheet and operation and maintenance manual. Use Komatsu EO or equivalent engine oil for lubrication. The hydraulic system requires Komatsu HO or equivalent hydraulic oil. Coolant should be a high-quality ethylene glycol-based antifreeze meeting Komatsu specifications. The oil cooler thermo valve opens at 100°C with a fully open lift of 8 mm. Air filter and fuel filter replacement intervals depend on operating conditions but are critical for preventing power loss and engine damage. The engine meets EC Stage II regulations, so no DEF (Diesel Exhaust Fluid) is required for this tier. Have your dealer verify the exact service intervals and fluid capacities for your specific machine model and operating environment.
How does the SA6D140E-3 engine configuration differ between the PC600-6 excavator and the D155AX-5 bulldozer?
The SA6D140E-3 engine is used in both the PC600-6 excavator and the D155AX-5 bulldozer, but the mounting dimensions and auxiliary equipment configurations differ. For the D155AX-5, the engine length is 1,499 mm for serials 110001–the OEM part reference and 1,446 mm for serials the OEM part reference and up. The oil pan depth varies by machine: 30 mm for the D155AX-5 and WA500-3, and 36 mm for the PC750-6/PC800-6 series. The flywheel ring gear size is 60 mm for the D155AX-5 and WA500-3, and 60 mm for the PC750-6/PC800-6 series. The turbocharger is the Komatsu KTR110L for both applications. The PC600-6 excavator uses the engine to drive a hydraulic system optimized for large digging force, while the D155AX-5 uses it for dozer blade lift and travel. Have your dealer verify the specific engine mounting bolts and exhaust configuration for your machine.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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