Komatsuengine(no series)
Komatsu SA6D110-1J(S/N 50202-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu SA6D110-1J is a six-cylinder, turbocharged diesel engine used in mid-size crawler excavators and wheel loaders. It powers machines in the 20 to 30 ton operating weight class, such as the PC200 and PC210 series. Production spans from the late 1990s through the 2010s. It succeeded earlier 6D105 and 6D110 variants. It was replaced by the SAA6D107E-1 in newer PC200-8 and PC210-8 models. Configurations include standard and high-power output options for various duty cycles.
The SA6D110-1J engine transitioned from mechanical injection to electronic control in later builds. This shift improved fuel efficiency and emissions compliance. The engine remains critical in the used market because it powers the widely owned PC200 series. Parts availability is high due to the large installed base. The engine is known for durability in heavy construction and mining applications. Its modular design allows for straightforward inframe overhauls.
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 SA6D110-1J(S/N 50202-UP) specifications
Engine
| Model | SA6D110-1J |
| Series/Generation | SA6D110-1 Series (Build 8B) |
| Cylinders | 6 |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
| Gross/Net Power | Not documented for this exact serial range — verify with your dealer |
| Displacement | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | Not documented for this exact serial range — verify with your dealer |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | Not documented for this exact serial range — verify with your dealer |
| Transport Width | Not documented for this exact serial range — verify with your dealer |
| Transport Height | Not documented for this exact serial range — verify with your dealer |
| Track Gauge | Not documented for this exact serial range — verify with your dealer |
| Ground Clearance | Not documented for this exact serial range — verify with your dealer |
Performance
| Travel Speed | Not documented for this exact serial range — verify with your dealer |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service Capacities (Summary)
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
| Fuel Tank | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu SA6D110-1J(S/N 50202-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 SA6D110-1J(S/N 50202-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Use KOWA oil analysis at every 500-hour interval to monitor wear metals and contamination. Check coolant SCA levels at 500 hours to prevent cavitation in the SA6D110-1J cylinder liners. Monitor hydraulic oil particle count to protect the load-sensing valve. Track fuel dilution in the engine oil to detect injector leaks early. Analyze final drive oil for gear wear before failure occurs. Use KOMTRAX telematics to correlate load frequency with fluid degradation rates.
Corrective & Common Repairs
Replace the fuel injection pump if fuel delivery pressure drops below spec. Inspect the turbocharger shaft play during 1000-hour services. Check the oil cooler for internal cross-contamination between coolant and oil. Replace worn piston rings if blue smoke indicates excessive blow-by. Inspect the crankshaft main bearings for scoring during major service. Verify the ECM sensor wiring for corrosion at the engine harness connections.
Overhaul & Rebuild Points
Perform an inframe overhaul at 10,000 to 12,000 hours depending on duty cycle. Replace piston rings, liners, and bearings during the inframe process. Inspect the cylinder head for warpage and replace valves if seating is poor. Check the crankshaft journal diameters for wear beyond limits. Replace the timing gear set if backlash exceeds specification. Rebuild the fuel injection pump if internal clearance causes poor atomization.
Seasonal & Environment Servicing
Install block heater extensions for cold climates to ensure proper oil flow. Use low-viscosity engine oil in freezing temperatures to aid starting. Check the radiator fins for insect and debris buildup in dusty environments. Increase grease frequency on the swing bearing in wet or muddy conditions. Inspect the air intake pre-cleaner more often in high-dust applications. Drain the fuel water separator daily in humid conditions to prevent microbial growth.
SA6D110-1J(S/N 50202-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-9100 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 09637-02161 | Plate? Instruction,Air Cleaner (Double Element) | Air intake service | Check fitment → |
| 09637-30161 | Plate? Instruction,Air Cleaner (Single Element) | Air intake service | Check fitment → |
| 6125-81-7032 | Element Ass'Y,Air Cleaner | Air intake service | Check fitment → |
| 600-651-1430 | Element,Oil Cooler | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
SA6D110-1J(S/N 50202-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 |
| CA441 | Battery voltage too low | Weak battery or charging system fault | Replace the battery or alternator; check the voltage regulator |
| CA442 | Battery voltage too high | Faulty voltage regulator or alternator | Replace the alternator or battery; check the voltage regulator |
| CA122 | Intake air pressure sensor feedback voltage too high | Sensor malfunction or actual overpressure condition | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure sensor feedback voltage too low | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA153 | Intake air temperature sensor feedback voltage too high | Sensor malfunction | Replace or test the IAT sensor |
| CA154 | Intake air temperature sensor feedback voltage too low | Sensor short or circuit issue | Replace or test the IAT sensor |
| 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 |
| CA452 | Common rail pressure sensor feedback value too low | Sensor malfunction or fuel supply issue | 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, engine load cycle, or operator misuse |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
SA6D110-1J(S/N 50202-UP) attachments & work tools
Excavator Attachments
The SA6D110-1J engine is utilized in the PC200-5 and PC220-3 excavator series. Standard bucket capacities for this class typically range from 0.8 to 1.2 cubic meters, with heavy-duty configurations supporting up to 1.5 cubic meters. Coupler systems are generally fixed-mount or quick-attach compatible depending on the specific boom configuration.
Wheel Loader Attachments
This engine powers the WA380-1 and WA400-1 wheel loaders. Typical bucket capacities for these models range from 2.5 to 3.5 cubic meters. Mounting systems include standard quick-attach couplers, with hydraulic kit requirements varying by bucket type and manufacturer specifications.
Dozer Attachments
The D68E-1 dozer utilizes the SA6D110-1J engine. Blade configurations include standard straight (S) and semi-universal (SU) blades. Guarding options and blade widths vary by configuration, typically ranging from 3.0 to 3.5 meters.
Generator Set Attachments
The EC210Z-1 and EG150-3 generator sets use this engine. Power output configurations vary by series, typically ranging from 150 to 210 kVA. Mounting systems are integrated into the generator frame, with hydraulic kits not applicable for this application.
All SA6D110-1J(S/N 50202-UP) assemblies by section
Every catalogued assembly group for the Komatsu SA6D110-1J(S/N 50202-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Accessory
Komatsu : Sa6d110-1j(S/N 50202-Up) : Accessory : Air Compressor
| 61***11 | Air Compressor Ass'Y,(See Fig.0711) | 1 |
| 61***12 | Air Compressor Ass'Y | 1 |
| DK***00 | Cylinder | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Accessory : Air Compressor And Piping
| 01***20 | Bolt,(Large Capacity Type) (Std) | 1 |
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
Cooling System
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cooling System : Corrosion Resistor And Piping
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***29 | Washer,Spring (Cold Weather Spec.) | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cooling System : Water Pump And Cooling Fan
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cooling System : Water Pump And Cooling Fan (For Large Fan And Reversible Fan)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***50 | Bolt | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cooling System : Water Pump And Cooling Fan (Log Loader) (Except Japan)
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***50 | Bolt | 1 |
Cylinder Block
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Camshaft And Tappet
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Crankshaft (With Air Conditioner)
| 01***55 | Bolt,(For France Noise Suppression) | 6 |
| 01***75 | Bolt,(For 75a Alternator) | 6 |
| 01***45 | Bolt,Nylock | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Crankshaft (With Air Conditioner) (For 75a Alternator)
| 01***75 | Bolt,(For 75a Alternator) | 6 |
| 01***45 | Bolt,Nylock | 1 |
| 01***70 | Bolt,(For 75a Alternator) | 6 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Crankshaft (Without Air Conditioner)
| 01***25 | Bolt - Rear Guard Mounting | 6 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 6 |
| 01***45 | Bolt,Nylock | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Crankshaft (Without Air Conditioner) (Log Loader) (Except Japan)
| 01***45 | Bolt,(Cold Terrain Spec.) | 6 |
| 01***45 | Bolt,Nylock | 1 |
| 01***45 | Bolt,(Noise Abatement Part) | 6 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Cylinder Block(#50202-52372)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 23 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Cylinder Block(#52373-)
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Flywheel And Flywheel Housing (Key Stop Type)
| 01***40 | Bolt,(Dust And Dirt Protection) | 9 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 8 |
| 01***55 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Flywheel And Flywheel Housing (Pedal Stop Type) (For Iran) (Log Loader) (Except Japan)
| 01***40 | Bolt,(Dust And Dirt Protection) | 9 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 8 |
| 01***55 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Front Cover And Gear
| 01***22 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Without Auto Priming System) | 4 |
| 01***60 | Bolt,(Without Alternator Bracket) | 8 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Oil Pan
| 01***22 | Bolt,(Cold Terrain Spec.) | 29 |
| 01***25 | Bolt,(Without Auto Priming System) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Oil Pan (A Spec.)
| 01***22 | Bolt,(Cold Terrain Spec.) | 29 |
| 01***25 | Bolt,(Without Auto Priming System) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Oil Pan (For Iran) (Log Loader) (Except Japan)
| 01***22 | Bolt,(Cold Terrain Spec.) | 29 |
| 01***25 | Bolt,(Without Auto Priming System) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Block : Piston And Connecting Rod
| 04***18 | Ring, Retaining | 12 |
| 61***10 | Bolt,Connecting Rod | 2 |
| 61***11 | Bolt,Connecting Rod | 2 |
Cylinder Head
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Air Cleaner And Mounting
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***45 | Bolt,(For Suction? Reversible Fan) | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Air Intake Manifold And After Cooler
| 01***20 | Bolt | 2 |
| 01***25 | Bolt,(Without Auto Priming System) | 12 |
| 01***35 | Bolt,(Without Auto Priming System) | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Cylinder Head
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Cylinder Head Cover(#50202-53515)
| 07***23 | Clamp - Hose | 1 |
| 60***10 | Seal (K1) | 1 |
| 61***20 | Screw | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Cylinder Head Cover(#53516-)
| 07***23 | Clamp - Hose | 1 |
| 07***00 | Clip | 1 |
| 07***30 | Clip | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Exhaust Manifold And Turbocharger (Except Japan)
| 01***60 | Bolt (M10-1.50x60) | 1 |
| 01***00 | Bolt (M10-1.50x100) | 11 |
| 01***15 | Bolt | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Muffler And Mounting
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Muffler And Mounting (For Iran) (Log Loader) (Except Japan)
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Rocker Arm
| 01***80 | Bolt,(Shim 5 Pieces Over) | 2 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 12 |
| 01***36 | Washer,Radio Controlled Slag Handling | 6 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Cylinder Head : Turbocharger (Except Japan)
| 61***01 | Turbocharger Ass'Y,(T04b59-39) | 1 |
| GA***00 | Clamp | 3 |
| GA***01 | Bolt | 6 |
Electrical System
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator (25a) (With Hardening Pulley)
| 60***30 | Alternator A. (25a),(With Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***80 | Collar | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator (25a) (With Non Hardening Pulley)
| 60***20 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***80 | Collar | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator (35a) (With Hardening Pulley)
| 60***40 | Alternator A. (35a),(With Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***80 | Collar | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator (35a) (With Non Hardening Pulley)
| 60***10 | Alternator A. (35a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***80 | Collar | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator (50a) (With Hardening Pulley)
| 60***90 | Alternator A. (50a),(With Hardening Pulley) | 1 |
| SD***X0 | Washer | 1 |
| SD***X0 | Fan | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator (50a) (With Non Hardening Pulley)(#50202-52531)
| 60***40 | Alternator A. (50a),(With Non Hardening Pulley) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator (50a) (With Non Hardening Pulley)(#52532-)
| 60***90 | Alternator A. (50a),(With Non Hardening Pulley) | 1 |
| SD***X0 | Washer | 1 |
| SD***X0 | Fan | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator (75a) (With Non Hardening Pulley)
| 60***40 | Alternator A. (75a),(With Non Hardening Pulley) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Bracket, Rear | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator And Mounting (25a? 35a) (Brecket Mounting Type) (For Iran) (Log Loader) (Except Japan)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***70 | Bolt,(With Wear Guard) | 1 |
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Alternator And Mounting (25a? 35a? 50a? 75a) (Bracket Mounting Type)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***70 | Bolt,(With Wear Guard) | 1 |
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Starting Motor (7.5kw)(#50202-53207)
| 60***50 | Starting Motor Ass'Y,(7.5kw) (S6d105-1x) | 1 |
| KD***20 | Magnetic Switch Assembly | 1 |
| KD***40 | Spring,Spring | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Starting Motor (7.5kw)(#53208-)
| 60***50 | Starting Motor Ass'Y,(7.5kw) | 1 |
| KD***51 | Armature Ass'Y | 1 |
| KD***60 | Shift Lever Assembly | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Electrical System : Starting Motor And Mounting (7.5kw)
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***30 | Bolt, Mounting - Front Hand Rails | 3 |
| 01***36 | Washer,Radio Controlled Slag Handling | 3 |
Fuel System
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Additional Fuel Filter
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
| 60***00 | Fuel Filter Ass'Y | 1 |
| 60***20 | Cartridge,Pref | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Filter And Piping
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Coupling)
| DK***20 | Plate | 1 |
| DK***00 | Coupling | 1 |
| DK***00 | Washer,Lock | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Coupling) (For Iran) (Log Roader) (Except Japan)
| DK***20 | Plate | 1 |
| DK***00 | Coupling | 1 |
| DK***00 | Washer,Lock | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Feed Pump)
| DK***20 | Bolt, Joint | 1 |
| DK***20 | Pump,Priming | 1 |
| DK***00 | Guide | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Feed Pump) (For Iran) (Log Roader) (Except Japan)
| DK***20 | Bolt, Joint | 1 |
| DK***20 | Pump,Priming | 1 |
| DK***00 | Guide | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2)
| DK***20 | Guide Lever Ass'Y | 1 |
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2) (For Iran) (Log Roader) (Except Japan)
| DK***20 | Guide Lever Ass'Y | 1 |
| DK***00 | Adapter | 1 |
| DK***20 | Capsule,Spring | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2)
| DK***00 | Spring,Governor | 1 |
| DK***80 | Shim? 0.5mm | 0 |
| DK***00 | Washer,Spring | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2) (For Iran) (Log Roader) (Except Japan)
| DK***00 | Spring,Governor | 1 |
| DK***80 | Shim? 0.5mm | 0 |
| DK***00 | Washer,Spring | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Pump)
| 61***10 | Injection Pump Ass'Y | 1 |
| 61***30 | Injection Pump Ass'Y,(Tunnel Spec.) | 1 |
| DK***00 | Seat,Spring | 6 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Pump) (For Iran) (Log Roader) (Except Japan)
| 61***20 | Injection Pump Ass'Y | 1 |
| DK***00 | Seat,Spring | 6 |
| DK***20 | Bolt | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Timer)
| DK***00 | Shim? 0.15mm | 0 |
| DK***20 | Flange | 1 |
| DK***40 | Shim? 0.20mm | 0 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump (Timer) (For Iran) (Log Roader) (Except Japan)
| DK***00 | Shim? 0.15mm | 0 |
| DK***20 | Flange | 1 |
| DK***40 | Shim? 0.20mm | 0 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump And Piping
| 01***30 | Bolt | 3 |
| 01***70 | Bolt | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Injection Pump And Piping (For Iran) (Log Roader) (Except Japan)
| 01***30 | Bolt | 3 |
| 01***70 | Bolt | 4 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 4 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Fuel Nozzle And Spill Pipe
| 01***55 | Bolt,(For Trimming Dozer) | 12 |
| 01***55 | Screw | 12 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 12 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Solenoid And Mounting (Key Stop Type)
| 01***20 | Bolt | 4 |
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***50 | Bolt - Torque Converter Totransmission Mounting | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Fuel System : Water Separator
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 60***00 | Water Separator A.,(4d105-5h? 4d105-5t) | 1 |
| 60***60 | Plug,Drain (4d105-5h? 4d105-5t) | 1 |
Lubricating Oil System
Komatsu : Sa6d110-1j(S/N 50202-Up) : Lubricating Oil System : Lubricating Oil Cooler
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***35 | Bolt,(Without Auto Priming System) | 16 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Lubricating Oil System : Lubricating Oil Cooler (A Spec.)
| 01***25 | Bolt,(Without Auto Priming System) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***35 | Bolt,(Without Auto Priming System) | 12 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Lubricating Oil System : Lubricating Oil Filter And Mounting
| 01***70 | Bolt | 1 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 2 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Lubricating Oil System : Lubricating Oil Piping
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***40 | Bolt,(For Position Fixing) | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Lubricating Oil System : Lubricating Oil Pump And Suction Pipe
| 01***25 | Bolt,(Without Auto Priming System) | 3 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 1 |
| 01***45 | Bolt,(S6d155-4b) | 1 |
Komatsu : Sa6d110-1j(S/N 50202-Up) : Lubricating Oil System : Turbocharger Lubricating Oil Piping
| 01***22 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
Tool And Kit
Komatsu : Sa6d110-1j(S/N 50202-Up) : Tool And Kit : Gasket Kit
| 07***18 | O-Ring,(See Fig.1601-29?1602-17) | 1 |
| 07***21 | O-Ring,Water Piping | 1 |
| 07***70 | O-Ring,(For Intake Air Cover) | 1 |
SA6D110-1J(S/N 50202-UP) serial number reference
The engine serial number plate is located on the left side of the engine block, typically near the injection pump or on a metal plate affixed near the valve cover. The prefix is part of the engine model designation stamped on this plate, not the machine's chassis PIN. To identify the correct parts catalog, match the engine model (SA6D110-1J) and the machine serial number (50202-UP) on the machine's data plate with the catalog's listed range.
| Prefix | Identifies | Notes |
|---|---|---|
| SA6D110-1J | Engine Model | SA6D110-1J engine fitted to machines with serial number 50202-UP. This engine designation identifies the powerplant for this specific serial range. The prefix 'SA' indicates a turbocharged, water-cooled aftercooled inline-six diesel engine. The '1J' suffix denotes the specific emission/development stage and configuration variant for this build period. No other 3-character PIN prefixes are documented for this exact engine/serial combination in the provided sources. Verify with your dealer for machine-specific chassis prefixes (e.g., PC, D, WA) as the engine prefix alone does not define the host machine model. |
Frequently asked questions
What engine does the Komatsu SA6D110-1J use?
It is a six-cylinder, turbocharged, aftercooled diesel engine. It displaces approximately 11.04 liters. It produces between 147 kW and 162 kW depending on the specific build. It uses a mechanical or electronic fuel injection system depending on the serial number.
What is the operating weight of the machine powered by this engine?
The operating weight varies by configuration. It typically ranges from 20,000 kg to 22,000 kg for the PC200 series. It can reach 23,000 kg with a long boom and stick. Counterweight and track shoe options affect the final weight.
What replaced the SA6D110-1J engine?
The SAA6D107E-1 engine replaced the SA6D110-1J in newer PC200-8 and PC210-8 models. The SAA6D107E-1 is a 7.7-liter engine that meets Tier 4 Final emissions standards. It offers higher torque and better fuel efficiency than the 11-liter SA6D110-1J.
What SA6D110-1J(S/N 50202-UP) owners discuss
What are the known powertrain and hydraulic behaviors for the Komatsu SA6D110-1J engine series?
The SA6D110-1J is a six-cylinder diesel engine used in mid-size excavators and wheel loaders. Community consensus indicates these engines are robust but sensitive to hydraulic load. If the hydraulic pump fails, the engine is often not far behind due to shared contamination or load spikes. The hydraulic system is a closed-center load-sensing design; if all functions (boom, arm, bucket, swing, travel) become slow simultaneously, the issue is likely the main pump, engine RPM, or hydraulic oil condition rather than individual cylinders. Weak performance when hot but normal when cold typically points to internal pump wear, main control valve leakage, or degraded hydraulic oil viscosity. The line is noted for smooth operation and fuel efficiency compared to earlier generation competitors, but resale value can suffer if hydraulic components are neglected.
What undercarriage or wear patterns are typical for machines powered by this engine?
Machines equipped with the SA6D110-1J (such as the PC200-6 or WA320-8) exhibit typical heavy-duty undercarriage wear. Track tension and roller condition are critical; machines that pull to one side often have mechanical resistance from mud-packed undercarriages or uneven track-chain wear rather than hydraulic travel motor failure. Bushings, bearings, and track pads degrade significantly under continuous load and dust exposure. Worn bushings lead to noise and vibration, while worn bearings can cause premature track failure. Final drives may develop grinding noises from the travel motor side, requiring specialized tools for inspection. Regular inspection of track tension and component wear is essential to prevent accelerated undercarriage loss.
What are the common engine quirks and maintenance requirements for the SA6D110-1J series?
The SA6D110-1J (Build 8B) is part of the 110 Series, with shop manuals covering serial numbers 10001 and up. Common quirks include sensitivity to fuel quality and air intake restrictions. Engine performance issues like power loss under load often stem from clogged air filters, fuel filters, or restricted fuel tank vents rather than injector failure. Overheating during heavy excavation is frequently caused by debris packed between the radiator, hydraulic oil cooler, and charge-air cooler. The engine requires specific Komatsu fluids: Komatsu EO diesel engine oil, Komatsu HO hydraulic oil, and Super-coolant AF-NAC. Extended service intervals or low-quality fuel accelerate wear on the fuel delivery components and injectors. The engine is known for durability but requires strict adherence to fluid specifications to maintain efficiency.
What are the common electrical and sensor issues reported by owners?
Komatsu excavators rely heavily on electronic control systems, making them susceptible to issues from faulty sensors or unstable power supplies. Owners frequently report intermittent starting, dashboard failures, or random machine shutdowns. These symptoms often trigger multiple warning signals simultaneously. The primary suspects are usually the battery state of charge, battery terminals, engine and chassis grounds, and the main starter cable. A battery may show acceptable voltage until the starter is loaded; a load test is recommended before replacing the starter. Intermittent electrical faults can also stem from corroded connectors or unstable ground connections, which disrupt the engine control unit's ability to manage fuel and ignition timing.
What should be checked when buying a used machine with the SA6D110-1J engine?
When inspecting a used machine with the SA6D110-1J engine, verify the exact serial number to confirm the engine build and applicable service manual. Check for signs of hydraulic contamination, as pump failure often leads to engine damage. Inspect the cooling package for packed debris between heat exchangers. Test the engine under load to ensure it does not lose power or overheat. Check the hydraulic system for weakness when hot, which indicates internal leakage. Verify the condition of the undercarriage, including track tension, roller wear, and final drive noise. Inspect the electrical system for intermittent starting or dashboard faults. Ensure the machine has been maintained with Komatsu-specified fluids (EO, HO, AF-NAC) to avoid premature wear.
How does the SA6D110-1J engine compare to related variants in terms of configuration?
The SA6D110-1J is distinct from the SA6D102E series (such as the SA6D102E-1-GD or SA6D102E-1B). The SA6D110-1J is a 110 Series engine, while the SA6D102E is a 102 Series engine. They have different displacements, power outputs, and internal components. The SA6D110-1J is typically found in larger excavators (like the PC200-6) and wheel loaders (like the WA320-8), whereas the SA6D102E series is used in smaller to mid-size machines. Do not mix parts or service data between these series; they are not interchangeable. The SA6D110-1J has its own specific shop manual (SEBE6138A05) and parts catalog. Always verify the engine model plate to ensure correct service procedures and fluid specifications.
What safety-critical fixes or verifications are recommended for this engine?
Safety-critical issues include engine overheating, which can lead to catastrophic failure if coolant is expelled or the system becomes highly pressurized. Verify the cooling system integrity and fan operation. Check the fuel system for leaks or air ingress, which can cause sudden power loss or fire hazards. Ensure all electrical grounds are secure to prevent erratic engine behavior. If the machine derates suddenly, diagnose the engine and aftertreatment system immediately. Have your dealer verify any major repairs, especially those involving the hydraulic pump, engine internals, or electrical control modules, to ensure proper calibration and safety.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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