Komatsu S6D102E-1BB-C(S/N 26200929-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu S6D102E-1BB-C engine is a six-cylinder in-line diesel powerplant designed for the Komatsu 102 series of construction equipment, specifically powering the D41E-6K dozer and PC200-6/210-6 excavator families. This engine configuration was utilized in machines manufactured approximately between 1995 and 2002, bridging the late dash-6 generation and early dash-7 era. It succeeded the earlier S6D102E-1AA/AB variants and was eventually replaced by the S6D102E-1C series to meet evolving emissions standards. The engine delivers approximately 140 horsepower and is characterized by its robust iron block construction and mechanical fuel injection system, serving mid-weight earthmoving applications with a focus on durability and serviceability.
Across the 102 series generations, the primary changes involved the transition from mechanical injection to electronic control units (ECU) and the integration of intercooling systems in later variants like the S6D102E-1C. The S6D102E-1BB-C remains significant in the used and parts market because it powers high-volume models like the PC200-6 and D41E-6, which are still widely active in secondary markets. Its mechanical simplicity compared to modern Tier 4 engines makes it a preferred candidate for independent repair and overhaul, sustaining a robust aftermarket ecosystem for components such as pistons, liners, and injectors.
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 S6D102E-1BB-C(S/N 26200929-UP) specifications
Engine
| Model | S6D102E-1BB-C |
| Series/Generation | 102 Series |
| Configuration | 6 cylinder in-line turbo |
| Displacement | 5.9 liter (359 CID) |
| Bore | 102 mm (4.02 in) |
| Stroke | 120 mm (4.72 in) |
| Compression Ratio | 16.5:1 |
| Power Range | 134-157 kW (180-210 hp) @ 2500 rpm |
| Torque Range | 420-450 Nm (310-330 lb.ft) @ 1500 rpm |
Weights
| Engine Weight | 466 kg (1025 lb) |
Dimensions
| Engine Length | 1067 mm (42 in) |
| Engine Width | 711 mm (28 in) |
| Engine Height | 894 mm (35 in) |
Performance
| Note | Travel speeds, lift/dig/dump/drawbar, and gradeability are machine-specific values not documented for the engine unit itself in the provided sources. |
Service capacities (summary)
| Note | Fuel tank, hydraulic system, engine oil, and cooling system capacities are machine-specific values not documented for the engine unit itself in the provided sources. |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu S6D102E-1BB-C(S/N 26200929-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 S6D102E-1BB-C(S/N 26200929-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Komatsu KOWA fluid analysis at every 500-hour interval to monitor wear metals (iron, copper, lead) and contaminants (silicon, sodium) in the S6D102E-1BB-C engine. Check coolant SCA concentration at 500 hours to prevent liner cavitation in the iron block. Monitor hydraulic oil particle count and viscosity to protect the high-pressure injection pump and valve train. Track fuel dilution and soot levels in the engine oil to determine optimal drain intervals based on actual operating conditions rather than fixed schedules.
Corrective & Common Repairs
Address common S6D102E-1BB-C failures by inspecting the fuel injector nozzles for coking and checking the mechanical governor linkage for wear. Replace worn piston rings and cylinder liners if compression drops or excessive blow-by occurs. Inspect the turbocharger shaft play and bearing clearance for boost pressure loss. Check the injection pump timing and camshaft wear for power loss. Replace the fuel water separator element regularly to prevent corrosion in the mechanical fuel system components.
Overhaul & Rebuild Points
Perform an inframe overhaul when cylinder liner wear exceeds specifications or when piston crown damage is evident. Replace main and connecting rod bearings if oil pressure drops below factory limits. Inspect the crankshaft journal surfaces for scoring or taper. Recondition the cylinder head, checking valve seat integrity and guide clearance. Replace all gaskets and seals during reassembly. Ensure proper torque sequence for the cylinder head bolts to prevent head gasket failure and coolant leakage into the combustion chamber.
Seasonal & Environment Servicing
In cold climates, ensure the coolant mixture provides adequate freeze protection and use lower viscosity engine oil for cold starts. Check the battery charge and cable connections, as cold temperatures reduce cranking power. In dusty environments, inspect the air filter restriction indicator more frequently and clean the radiator and oil cooler fins to prevent overheating. In high-humidity areas, drain the fuel separator daily to prevent water contamination and microbial growth in the fuel tank. Verify the operation of the engine oil cooler fan clutch for proper temperature regulation.
S6D102E-1BB-C(S/N 26200929-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6732-71-6111 | Filter, Fuel - Secondary | Fuel system service | Check fitment → |
| 600-181-6740 | Element Assembly, Innner And Outer Air Cleaner | Air intake service | Check fitment → |
| 6732-21-5530 | Cartridge, Engine Oil Filter | Lubrication service | Check fitment → |
| 6735-51-5141 | Filter, Lubrication Oil | Lubrication service | Check fitment → |
| 6736-61-5170 | Head, Lube Oil Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
S6D102E-1BB-C(S/N 26200929-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor and backup speed sensor failure | Faulty speed sensor, damaged wiring harness, or corroded connector at the sensor pin | Replace the speed sensor and verify voltage at the pin connector |
| CA451 | Common rail pressure sensor feedback value too high | Malfunctioning rail pressure sensor or actual overpressure condition in the fuel line | Diagnose the fuel rail pressure sensor or check pump lines for blockage |
| CA111 | Internal engine controller fault | Critical internal failure of the Electronic Control Module (ECM) | Replace or reprogram the ECM |
| 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 in the intake system | Check for a sensor short or an airflow restriction |
| CA441 | Battery voltage too low | Weak battery, failing alternator, or loose connections | Replace the alternator or battery; check the voltage regulator |
| CA442 | Battery voltage too high | Faulty voltage regulator or alternator overcharging | Replace the alternator or battery; check the voltage regulator |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration and engine load cycle |
| CA153 | Intake air temperature sensor feedback voltage too high | Faulty Intake Air Temperature (IAT) sensor | Replace or test the IAT sensor |
| CA154 | Intake air temperature sensor feedback voltage too low | Faulty Intake Air Temperature (IAT) sensor or short circuit | Replace or test the IAT sensor |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
S6D102E-1BB-C(S/N 26200929-UP) attachments & work tools
Excavator Attachments
The S6D102E-1BB-C engine (S/N 26200929-Up) powers the PC200-6, PC210-6, and PC220-6 series excavators. Typical bucket capacities for this class range from 1.1 to 1.6 cubic yards (0.8 to 1.2 cubic meters). These machines utilize standard quick coupler systems compatible with factory and aftermarket tooling.
Dozer Attachments
This engine is installed in the D41E-6K and D41E-6K-B dozers (S/N 50001-Up). Standard blade configurations include the straight blade and the angle blade. Guarding options include side cutters and end bits, with dimensions varying by configuration/series based on the specific blade model.
Wheel Loader Attachments
The WA180-3 and WA250-3 wheel loaders use this engine series. Typical bucket capacities range from 2.5 to 3.5 cubic yards (1.9 to 2.7 cubic meters). Mounting systems are standardized for the WA180 and WA250 families, allowing for interchangeable bucket and grapple tools.
Grader Attachments
The GD530A-2B and GD530A-2C motor graders are equipped with this engine. Standard moldboard widths and blade configurations are specified for this class. Auxiliary hydraulics are required for tilt and angle adjustments on the moldboard.
Hydraulic Kit Requirements
Work tools requiring auxiliary hydraulics (such as tilt rotators or hydraulic breakers) must utilize the machine's factory auxiliary hydraulic kit. The S6D102E-1BB-C engine provides the power for these systems, but specific flow rates and pressures depend on the host machine's hydraulic pump configuration.
All S6D102E-1BB-C(S/N 26200929-UP) assemblies by section
Every catalogued assembly group for the Komatsu S6D102E-1BB-C(S/N 26200929-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Air Cleaner(#26277165-)
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 4 |
| 01***40 | Bolt,(For Operator'S Cab) | 2 |
| 01***30 | Bolt | 4 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Air Connector(#26277165-)
| 07***08 | Plug,(Without Auto Priming System) | 1 |
| 67***10 | Plug, Pipe (1/2-14 Npt) | 2 |
| 67***20 | Plug, Pipe (3/4 Nptf) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Air Intake Heater(#26277165-)
| 67***11 | Gasket,Air Intake Heater | 1 |
| 67***20 | Heater, Engine | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Alternator (35a) (Brushless Type) (Inner Parts)(#26277165-)
| 60***11 | Alternator A. (35a) | 1 |
| KD***70 | Bushing,Insulate | 1 |
| KD***50 | Regulator Ass'Y | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Alternator (35a) (Brushless Type)(#26277165-)
| (6***1) | Alternator A. (35a),(See Fig.A601p-02a7z) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Alternator Mounting (F0r 35a Brushless Alternator)(#26277165-)
| 01***30 | Bolt,(For Trimming Dozer) | 1 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 1 |
| 01***30 | Bolt,(Water Separator Spec.) | 3 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Belt Tensioner(#26277165-)
| 67***41 | Tensioner, Alternator Belt | 1 |
| 67***60 | Bolt, Mounting (M8-1.25x25) | 1 |
| 67***20 | Bolt (M10x1.50x70) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Breather And Hose(#26249258-)
| 07***89 | Clamp,(For Japan) | 2 |
| 67***30 | Seal | 1 |
| 67***30 | Bolt, Flange Head (M12-1.75x25) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Camfollower Cover(#26249258-)
| 67***20 | Bolt, Mounting (M8-1.25x16) | 4 |
| 67***80 | Seal, Grommet | 4 |
| 67***10 | Cover | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Camshaft
| 67***20 | Support, Camshaft Thrust | 1 |
| 67***31 | Gear, Camshaft | 1 |
| 67***60 | Bolt (M8x1.25x22) | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Caution Plate(#26277165-)
| 67***70 | Plate,Name | 1 |
| 67***71 | Plate,Name | 1 |
| 67***80 | Plate | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Cooling Fan(#26277165-)
| 01***40 | Bolt (Op) | 4 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 6 |
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Crankshaft
| 67***50 | Gear, Crankshaft | 1 |
| 67***11 | Gear, Crankshaft | 1 |
| 67***10 | Crankshaft Ass'Y | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Cylinder Block Blind Cover And Fuel Feed Pump(#26277165-)
| 67***60 | Bolt, Mounting (M8-1.25x25) | 2 |
| 67***20 | Spacer, Mounting | 1 |
| 67***11 | Gasket, Cover Plate | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Cylinder Block Blind Plug(#26200939-)
| 67***60 | Plug, Expansion (Not Used With Side Oil Fill) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Cylinder Block(#26222208-)
| 62***10 | Screw | 1 |
| 62***10 | Seal, O-Ring (M10-1.00) | 3 |
| 67***70 | Cylinder Block Ass'Y | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Cylinder Head
| 67***70 | Head Ass'Y | 1 |
| 67***10 | Retainer, Exhaust Valve Spring | 12 |
| 67***70 | Insert, Exhaust | 6 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Damper(#26277165-)
| 67***20 | Bolt (M12x1.25x36) | 4 |
| 67***20 | Damper, Rubber Vibration | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Dust Seal(#26249258-)
| 67***10 | Shield, Dust | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Exhaust Connector Clamp
| 67***20 | Clamp,Turbocharger Outlet Pipe | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Exhaust Manifold Gasket And Bolt(#26277165-)
| 67***30 | Bolt, Mounting (M10x1.50x65) | 12 |
| 67***10 | Gasket, Exhaust Manifold | 6 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Exhaust Manifold(#26206782-)
| 67***20 | Manifold, Exhaust | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fan Drive Pulley(#26277165-)
| 67***30 | Bearing,Roller | 1 |
| 67***30 | Pulley, Fan | 1 |
| 67***70 | Bolt, Mounting (M8-1.25x40) | 4 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Flywheel (With Pilot Bearing)(#26249258-)
| 06***07 | Bearing, Ball | 1 |
| 12***51 | Flywheel Ass'Y | 1 |
| 23***30 | Plate | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Flywheel Housing Plug And Plate(#26264143-)
| 01***25 | Bolt,(With Corrosion Resistor) | 1 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 61***90 | Spacer | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Flywheel Housing(#26264143-)
| 02***13 | Plug | 1 |
| 67***40 | Cover, Rear | 1 |
| 67***20 | Bolt (M8-1.25x16) | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Flywheel(#26249258-)
| 67***20 | Washer, Plain (M12) | 8 |
| 67***40 | Bolt | 8 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Front Cover(#26239106-)
| 67***11 | Gasket | 1 |
| 67***40 | Pin, Timing | 1 |
| 67***50 | Ring, Retaining | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Front Gear Train Cover(#26264837-)
| 07***10 | O-Ring,(F4320-67a0 -4 ) | 1 |
| 67***30 | Cover | 1 |
| 67***30 | Bolt, Flange Head (M12-1.75x25) | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Filter Piping(#26277165-)
| 01***30 | Bolt,(Water Separator Spec.) | 1 |
| 01***45 | Bolt | 2 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Filter(#26277165-)
| 67***11 | Filter, Fuel - Secondary | 1 |
| 67***20 | Head | 1 |
| 67***50 | Adapter, Filter Head | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Hose Joint (Feed Pump)(#26277165-)
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 2 |
| 07***14 | Screw, Banjo Connector (M10) | 1 |
| 61***10 | Connector, Banjo | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Hose Joint(#26249258-)
| 61***50 | Connector, Banjo | 1 |
| 67***40 | Cap,(For Shipping) | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (Inner Parts)(#26277165-)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***20 | Nut,Cap | 1 |
| DK***00 | Gasket | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (Inner Parts)(#26277165-)
| DK***00 | Gasket | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)(#26277165-)
| 67***20 | Injection Pump Ass'Y | 1 |
| DK***30 | Bearing | 0 |
| DK***20 | Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm | 0 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (Inner Parts)(#26277165-)
| DK***40 | Shim? 0.50mm, Shim, 0.50mm; Was Dk029311-0040 | 0 |
| DK***90 | Shim? 0.25mm, Shim, 0.25mm; Was Dk029311-0590 | 0 |
| DK***00 | Sleeve,Control | 6 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Injection Pump And Oil Piping(#26277165-)
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
| 62***10 | Seal, O-Ring (M10-1.00) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Fuel Injection Pump Mounting And Gear(#26277165-)
| 01***14 | Bolt - Fuel Sensor Mounting | 2 |
| 01***11 | Nut (M14-1.50 Thd), Nut; Was 01582-01411 | 1 |
| 61***61 | Washer, Plain (14mm) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Head Cover(#26249258-)
| 67***30 | Bolt (M8x1.25x25) | 6 |
| 67***50 | Washer, Plain (3/8 Inch) | 6 |
| 67***60 | Cover | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Heat Shield(#26249258-)
| 01***16 | Bolt - Starting Motor Ground Cable | 7 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***75 | Bolt (M10-1.50x75) | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Heater Switch(#26277165-)
| 01***14 | Bolt - Plate Mounting | 2 |
| 01***95 | Bolt | 2 |
| 01***04 | Nut,(For Air Conditioner Less) | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Injection Nozzle(#26255384-)
| 67***50 | Seal, Rectangular Ring | 1 |
| 67***60 | Gasket,Injector - Spill | 2 |
| 67***10 | Shim 1.00 mm Thick | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Injection Piping(#26277165-)
| 67***80 | Seal, Grommet | 1 |
| 67***60 | Brace, Tube | 1 |
| 67***40 | Screw, Banjo Connector (M6x1.00x14.3) | 6 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Muffler And Mounting(#26277165-)
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 16 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 4 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Oil Cooler And Oil Filter
| 67***50 | Valve, Pressure Relief | 1 |
| 67***51 | Valve, Pressure Relief | 1 |
| 67***30 | Plug, Pipe (1/8 Nptf) | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Oil Filler Cap(#26249258-)
| 61***10 | Cap, Oil Filler | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Oil Level Gauge(#26277165-)
| 01***20 | Bolt | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 1 |
| 01***08 | Nut,See Fig. K4010-04a0 | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Oil Pan And Suction Tube(#26265836-)
| 07***12 | Gasket,Oil Pan Drain | 1 |
| 67***10 | Plug, Threaded (M18-1.50 Thd) | 1 |
| 67***20 | Bolt, Flange (M8-1.25x20) | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Oil Pan Mounting(#26249258-)
| 67***60 | Bolt, Mounting (M8-1.25x25) | 36 |
| 67***80 | Washer, Plain (M9) | 36 |
| 67***11 | Gasket, Oil Pan | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Oil Pressure Switch(#26277165-)
| 08***05 | Switch,Engine Oil Pressure | 1 |
| 62***10 | Seal, O-Ring (M10-1.00) | 1 |
| 67***70 | Adaptor | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Oil Pump(#26273428-)
| 67***11 | Pump, Lubricating Oil | 1 |
| 67***20 | Bolt (M8x1.25x30) | 4 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Piston
| 67***00 | Piston Ring Ass'Y | 6 |
| 67***10 | Pin, Piston | 6 |
| 67***20 | Ring, Retaining | 12 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Repair Parts (1/4) (Cylinder Head)
| 67***40 | Gasket, Cylinder Head - 0.5mm Os | 1 |
| 67***70 | Gasket, Cylinder Head - 0.25mm Os | 1 |
| 67***51 | Gasket? 0.50mm,Head | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Repair Parts (2/4) (Cylinder Block)
| 67***10 | Bushing, Oversize (No. 1 Bore) | 1 |
| 67***20 | Bushing, Oversize (No. 2-5 Bore) | 1 |
| 67***10 | Sleeve, Salvage - Std Bore | 6 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Repair Parts (3/4) (Crankshaft)
| 67***00 | Main Metal Ass'Y | 6 |
| 67***00 | Main Metal Ass'Y | 6 |
| 67***00 | Main Metal Ass'Y | 6 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Repair Parts (4/4) (Piston)
| 67***00 | Piston Ring Ass'Y | 6 |
| 67***00 | Piston Ring Ass'Y | 6 |
| 67***20 | Piston? 0.5mm | 6 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Rocker Arm
| 67***70 | Screw, Slotted Set (3/8-24x1 1/2 Inch) | 2 |
| 67***40 | Bolt | 6 |
| 67***10 | Rod, Push | 12 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Starting Motor (5.5kw) (Inner Parts)(#26242958-)
| 60***10 | Starting Motor Ass'Y,(See Fig.A621p-02a1) | 1 |
| ND***80 | Holder Ass'Y,Brush | 1 |
| ND***00 | Brush Ass'Y | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Starting Motor Mounting (5.5kw)(#26249258-)
| 01***30 | Stud | 1 |
| 01***40 | Bolt,(Shim 3-Piece) | 2 |
| 01***08 | Nut,See Fig. K4010-04a0 | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Starting Motor Mounting(#26249258-)
| 01***45 | Bolt, Bracket Mounting | 3 |
| 67***30 | Spacer | 1 |
| 67***80 | Gasket, Starter | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Starting Switch(#26277165-)
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***14 | Bolt - Fuel Sensor Mounting | 1 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Tachometer Drive Cover
| 67***90 | Cover, Mechanical Tach Drive | 1 |
| 67***20 | Seal, Rectangular Ring | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Tappet
| 67***12 | Tappet, Valve | 12 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Tappet Cover Bolt(#26277165-)
| 67***20 | Bolt, Mounting (M8-1.25x16) | 2 |
| 67***80 | Seal, Grommet | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Thermostat Housing(#26249258-)
| 67***40 | Bolt, (M8x1.25x35) | 1 |
| 67***80 | Bolt (M8-1.25x70) | 2 |
| 67***10 | Housing,Thermostat | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Thermostat(#26249258-)
| 67***10 | Thermostat | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Turbocharger Mounting(#26252277-)
| 67***10 | Stud ((M10x1.50 (Both Ends) X42)) | 4 |
| 67***20 | Nut (M10x1.50) | 4 |
| 67***30 | Gasket, Turbocharger Mounting | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Turbocharger Oil Piping(#26277165-)
| 62***90 | Gasket,Turbocharger Oil Drain | 1 |
| 67***30 | O-Ring,Turbocharger Drain | 2 |
| 67***20 | Bolt, Flange (M8-1.25x20) | 2 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Water Connector(#26249258-)
| 67***10 | Plug, Pipe (1/2-14 Npt) | 1 |
| 67***20 | Plug, Pipe (3/4 Nptf) | 1 |
| 67***20 | Bolt (M10-1.50x75) | 3 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Water Pump (Hardening Pulley)
| 67***60 | Bolt (M8x1.25x22) | 2 |
| 67***00 | Water Pump Ass'Y | 1 |
| 67***01 | Water Pump Ass'Y | 1 |
Komatsu : S6d102e-1bb-C(S/N 26200929-Up) : Engine : Water Temperature Sensor(#26277165-)
| 56***12 | Adapter,Water Temperature Gauge | 1 |
| 78***20 | Sensor,T/C Outlet Oil Temperature | 1 |
S6D102E-1BB-C(S/N 26200929-UP) serial number reference
The engine serial number plate is located on the left side of the engine block, typically near the valve cover or injection pump. Read the prefix (e.g., S6D102E-1BB-C) to identify the engine configuration, then match the numeric serial number to the specific range in the parts catalog to ensure correct fitment.
| Prefix | Identifies | Notes |
|---|---|---|
| S6D102E-1BB-C | Engine Model | S6D102E-1BB-C engine fitted to Komatsu D41E-6K / 6K-B dozers. Serial range 26200929-Up. Source: DK Engine Parts Equipment Guide. Confirm with dealer for exact application years. |
Frequently asked questions
What is the engine type for the Komatsu S6D102E-1BB-C?
It is a six-cylinder in-line, water-cooled, direct-injection diesel engine with a displacement of approximately 10.2 liters (622 cubic inches).
What is the operating weight of the Komatsu PC200-6 excavator powered by this engine?
The operating weight varies by configuration, typically ranging from 44,754 lb to 45,195 lb (20,300 kg to 20,500 kg) depending on the boom, stick, and counterweight setup.
What engine replaced the S6D102E-1BB-C in later Komatsu models?
The S6D102E-1C series engine replaced the 1BB-C variant in later dash-7 and dash-8 models to meet stricter emissions standards and incorporate electronic control features.
What S6D102E-1BB-C(S/N 26200929-UP) owners discuss
What are the physical dimensions of the Komatsu S6D102E-1BB-C engine?
What are the typical power outputs and operating speeds for this engine series?
What are the common hydraulic behaviors and diagnostic patterns for excavators using this engine?
What are the typical undercarriage and wear patterns for machines equipped with this engine?
What are common engine quirks and maintenance requirements for the S6D102E-1 series?
What are common electrical or sensor issues associated with this engine platform?
What should be checked when buying a used machine with the S6D102E-1BB-C engine (S/N 26200929-UP)?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific S6D102E-1BB-C(S/N 26200929-UP) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.