Komatsuengine(no series)
Komatsu S6D102E-1C-CA(S/N 26202240-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu S6D102E-1C-CA engine (S/N 26202240-UP) is a 6-cylinder, water-cooled, turbocharged diesel powerplant designed for the Komatsu PC200-6 and PC200LC-6 hydraulic excavator series. These machines belong to the mid-size excavator class, typically operating in the 20,000 to 60,000 lb weight range, and were produced primarily between 1995 and 2002. The S6D102E-1C-CA succeeded earlier 102-series engines and preceded the S6D102E-1F and S6D102E-1FL generations found in the PC200-7 and PC200-8 models. Configurations offered included standard and long-reach boom setups, with variations in hydraulic flow and auxiliary circuits depending on regional emissions and operator requirements.
Across the 102-series generations, the primary changes involved the transition from mechanical fuel injection to electronic control systems and the integration of Tier 4 Final/Stage V emissions packages in later models. The S6D102E-1C-CA remains significant in the used and parts market because it powers the highly durable PC200-6 platform, a benchmark for reliability in earthmoving. Its widespread adoption created a robust aftermarket ecosystem for overhaul kits, turbochargers, and hydraulic components, making it a cost-effective choice for fleet managers maintaining older but proven excavator fleets.
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-1C-CA(S/N 26202240-UP) specifications
Engine
| Model | S6D102E-1C-CA |
| Series/Generation | 102 Series |
| Displacement | 5.9 L (359 cu. in.) |
| Cylinders | 6, in-line |
| Bore | 102 mm (4.02 in.) |
| Stroke | 120 mm (4.72 in.) |
| Gross Power | 134–157 kW (180–210 hp) @ 2500 rpm |
| Net Power | 134–157 kW (180–210 hp) @ 2500 rpm |
| Torque | 420–450 N·m (310–330 lb·ft) @ 1500 rpm |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Engine Weight | 466 kg (1025 lb) |
| 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
| Engine Length | 1067 mm (42 in.) |
| Engine Width | 711 mm (28 in.) |
| Engine Height | 894 mm (35 in.) |
| 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 Speeds | Not documented for this exact serial range — verify with your dealer |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
| Dig Depth | Not documented for this exact serial range — verify with your dealer |
| Lift Capacity | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| 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 |
| 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 |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu S6D102E-1C-CA(S/N 26202240-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-1C-CA(S/N 26202240-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Komatsu KOWA fluid analysis at every 500-hour interval to monitor engine wear metals (iron, copper, lead) and contaminants (silicon, sodium). Track hydraulic oil particle count and viscosity to detect pump or valve wear early. Monitor coolant pH and SCA concentration to prevent liner cavitation and corrosion in the S6D102E-1C-CA block. Analyze fuel dilution and soot levels to optimize injector timing and air filter service intervals. Use KOMTRAX telematics to correlate load frequency with fluid degradation rates for precise service scheduling.
Corrective & Common Repairs
Address intermittent starting or random shutdowns by inspecting the engine controller power supply and sensor circuits. Replace worn piston rings and cylinder liners if blue smoke or excessive oil consumption indicates blow-by. Repair turbocharger shaft play or boost pressure leaks by replacing the H1C turbo assembly or intercooler hoses. Fix hydraulic pump cavitation by replacing suction strainers and checking for air leaks in the intake line. Resolve overheating by cleaning radiator fins and replacing failed water pump seals or thermostat units.
Overhaul & Rebuild Points
Perform inframe overhaul at 10,000 to 12,000 hours by replacing pistons, rings, liners, bearings, and gaskets. Replace the crankshaft if journal wear exceeds limits or if main bearing clearance is excessive. Rebuild the turbocharger if shaft end-play is out of spec or if compressor blades are damaged. Inspect the cylinder head for warpage and replace valve guides and seats if leakage occurs. Replace the fuel injection pump if pressure output drops below specification or if internal wear is detected during KOWA analysis.
Seasonal & Environment Servicing
In cold climates, use Komatsu Super-coolant AF-NAC premixed to -40°C to prevent freezing and ensure proper heat transfer. Check battery hold-downs and terminal connections for corrosion due to moisture exposure. In dusty environments, service the air filter more frequently and inspect the pre-cleaner for clogging. In high-humidity or coastal areas, inspect electrical connectors for oxidation and apply dielectric grease. Drain the fuel water separator daily to prevent microbial growth and injector damage in humid conditions.
S6D102E-1C-CA(S/N 26202240-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 6732-71-6111 | Filter, Fuel - Secondary | Fuel system service | Check fitment → |
| 600-311-9101 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 600-311-9121 | Cartridge,Fuel Filter | Fuel system service | Check fitment → |
| 600-181-6740 | Element Assembly, Innner And Outer Air Cleaner | Air intake service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
S6D102E-1C-CA(S/N 26202240-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine speed sensor and backup speed sensor failure | Faulty crankshaft speed sensor, damaged wiring harness, or corroded connector at the sensor pin interface. | Inspect the sensor gap and wiring integrity; replace the speed sensor if voltage signals are absent or erratic. |
| CA451 | Common rail pressure sensor feedback value is too high | Malfunctioning rail pressure sensor, actual overpressure condition, or shorted sensor signal line. | Verify the rail pressure sensor operation and check for physical blockages or regulator faults in the fuel system. |
| CA441 | Battery voltage is too low | Weak or discharged battery, failing alternator, or loose/corroded battery terminals. | Test the battery charge state and alternator output; tighten connections and replace defective components. |
| CA442 | Battery voltage is too high | Faulty voltage regulator, failing alternator, or open ground connection in the charging circuit. | Check the alternator regulator function and inspect all ground straps and battery cables for corrosion. |
| CA122 | Intake air pressure sensor feedback voltage is too high | Faulty intake air pressure sensor, shorted wiring, or sensor power supply issue. | Test the sensor voltage output and inspect the wiring harness for shorts or damage. |
| CA123 | Intake air pressure sensor feedback voltage is too low | Faulty intake air pressure sensor, open circuit in the wiring, or air intake restriction. | Check for sensor short circuits and verify the air filter and intake path are clear. |
| CA153 | Intake air temperature sensor feedback voltage is too high | Faulty intake air temperature (IAT) sensor or open circuit in the sensor wiring. | Test the IAT sensor resistance and inspect the connector for corrosion or disconnection. |
| CA154 | Intake air temperature sensor feedback voltage is too low | Faulty intake air temperature (IAT) sensor or shorted wiring harness. | Replace the IAT sensor if the short cannot be isolated in the wiring. |
| CA234 | Engine overspeed | Throttle calibration error, operator misuse, or malfunctioning fuel control solenoid. | Verify throttle calibration and inspect the fuel control solenoid operation. |
| CA689 | Engine speed sensor fault | Failed engine speed sensor, damaged signal wire, or incorrect sensor gap. | Inspect the sensor and wiring; replace the sensor if the signal phase is abnormal. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
S6D102E-1C-CA(S/N 26202240-UP) attachments & work tools
Excavator Buckets
Standard and heavy-duty digging buckets are the primary work tools for the PC200-6 and PC220-6 series excavators equipped with this engine. Typical capacities range from 0.8 to 1.2 cubic meters (1.0 to 1.6 cubic yards) depending on material density and specific machine configuration. These tools utilize a standard pin-on coupler system compatible with the boom and stick mounting points.
Dozer Blades
The D41E-6 bulldozer platform uses a straight or semi-U dozer blade for earthmoving and grading operations. Blade widths typically range from 3.0 to 3.5 meters (9.8 to 11.5 feet) with capacities around 3.0 to 4.0 cubic meters (3.9 to 5.2 cubic yards). Mounting is via a rigid frame attachment to the front of the chassis, requiring no additional hydraulic kits for basic operation.
Wheel Loader Buckets
The WA180-3 and WA250-3 wheel loaders utilize general-purpose and light-material buckets for loading and grading. Capacities typically range from 2.0 to 3.0 cubic meters (2.6 to 3.9 cubic yards) for the WA180 and 3.0 to 4.0 cubic meters (3.9 to 5.2 cubic yards) for the WA250. These tools attach via a standard pin-on coupler system on the lift arms.
Grader Blades
The GD530A-2 series motor grader employs a moldboard blade for fine grading and ditching. Blade lengths typically range from 3.0 to 3.5 meters (9.8 to 11.5 feet) with a capacity of approximately 3.0 cubic meters (3.9 cubic yards). The blade is mounted via a moldboard frame and requires standard hydraulic connections for angle and tilt adjustments.
Hydraulic Breakers
Hydraulic breakers are available as optional work tools for the PC200-6 and PC220-6 excavators. These require a secondary hydraulic circuit kit, including pilot lines and a flow control valve, to operate the breaker hammer. Mounting is via a standard quick coupler or pin-on system on the stick, with flow rates varying by configuration.
Hydraulic Hammers
Hydraulic hammers serve as an alternative to breakers for rock excavation on the PC200-6 and PC220-6 platforms. They require a dedicated hydraulic kit with pilot control lines and a flow divider to manage oil pressure and volume. Mounting is compatible with the standard stick attachment points, with specific kit requirements varying by hammer size and machine configuration.
All S6D102E-1C-CA(S/N 26202240-UP) assemblies by section
Every catalogued assembly group for the Komatsu S6D102E-1C-CA(S/N 26202240-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Air Intake Connector
| 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-1c-Ca(S/N 26202240-Up) : Engine : Air Intake Heater
| 67***10 | Gasket | 1 |
| 67***11 | Gasket,Air Intake Heater | 1 |
| 67***10 | Harness, Wiring | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Alternator (60a)
| (6***0) | Alternator A. (60a),(See Fig.A9990-02a3) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Alternator (60a) (Inner Parts)
| 60***10 | Alternator A. (60a),(See Fig.A601p-02a2) | 1 |
| ND***80 | Screw | 4 |
| ND***30 | Collar,Stud | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Alternator Drive Pulley
| 67***20 | Support Ass'Y | 1 |
| 67***70 | Bolt, Mounting (M8-1.25x40) | 4 |
| 67***10 | Hub, Fan | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Alternator Mounting
| 01***95 | Bolt (M10-1.50x95) | 1 |
| 01***16 | Washer,(For Shipping Parts) | 1 |
| 67***60 | Bolt, Mounting (M8-1.25x25) | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Belt Tensioner
| 67***60 | Bolt, Mounting (M8-1.25x25) | 1 |
| 67***20 | Bolt (M10x1.50x70) | 1 |
| 67***30 | Tensioner, Belt | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Breather Hose
| 01***25 | Bolt,(With Corrosion Resistor) | 1 |
| 07***20 | Clamp, Spring Hose | 1 |
| 07***78 | Hose | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Camfollower Cover(#26202240-26233000)
| 67***20 | Bolt, Mounting (M8-1.25x16) | 6 |
| 67***80 | Seal, Grommet | 6 |
| 67***60 | Cover, Push Rod | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Camfollower Cover(#26233001-)
| 67***20 | Bolt, Mounting (M8-1.25x16) | 6 |
| 67***80 | Seal, Grommet | 6 |
| 67***60 | Cover, Push Rod | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Camshaft
| 67***20 | Support, Camshaft Thrust | 1 |
| 67***31 | Gear, Camshaft | 1 |
| 67***60 | Bolt (M8x1.25x22) | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Caution Plate (English)
| 67***10 | Plate? Name | 1 |
| 67***11 | Plate? Name | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Cooling Fan
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 6 |
| 01***30 | Bolt,(Water Separator Spec.) | 6 |
| 60***20 | Fan,Cooling | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Corrosion Resistor
| 01***80 | Bolt (M10-1.50x80) | 1 |
| 01***16 | Screw | 1 |
| 01***40 | Bolt | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Crank Pulley (Hardening Pulley)
| 01***90 | Bolt,(For Large Fan) | 4 |
| 04***44 | V-Belt Set,Cooling Fan | 1 |
| 67***11 | Spacer | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Crankshaft
| 67***50 | Gear, Crankshaft | 1 |
| 67***11 | Gear, Crankshaft | 1 |
| 67***10 | Crankshaft Ass'Y | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Cylinder Block Blind Cover
| 67***20 | Bolt, Flange (M8-1.25x20) | 2 |
| 67***10 | Gasket, Cover Plate | 1 |
| 67***60 | Gasket | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Cylinder Block Blind Plug
| 67***60 | Plug, Expansion (Not Used With Side Oil Fill) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Cylinder Block(#26202240-26222207)
| 67***20 | Plug, Pipe (3/4 Nptf) | 1 |
| 67***30 | Plug, Pipe (1/8 Nptf) | 2 |
| 67***90 | Nozzle, Piston Cooling | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-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-1c-Ca(S/N 26202240-Up) : Engine : Cylinder Head
| 67***70 | Insert, Exhaust | 6 |
| 67***80 | Insert, Intake | 6 |
| 67***10 | Bolt, Mounting (M12x1.75x70) | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Damper
| 67***20 | Bolt (M12x1.25x36) | 4 |
| 67***20 | Damper, Rubber Vibration | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Exhaust Connector Clamp
| 67***20 | Clamp,Turbocharger Outlet Pipe | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Exhaust Manifold
| 67***20 | Manifold,Exhaust | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Exhaust Manifold Gasket And Bolt
| 67***30 | Bolt, Mounting (M10x1.50x65) | 12 |
| 67***10 | Gasket, Exhaust Manifold | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fan Drive
| 01***50 | Screw | 2 |
| 01***80 | Screw | 2 |
| 06***05 | Bearing, Ball | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fan Pulley
| 01***16 | Bolt,(With Alternator Cover Type) | 4 |
| 67***10 | Pulley,Air Conditioner | 1 |
| 67***80 | Pulley,Fan Drive | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fan Tension Pulley
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
| 01***10 | Bolt | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Flywheel Housing
| 67***10 | Housing,Flywheel | 1 |
| 67***20 | Bolt (M8-1.25x16) | 2 |
| 67***30 | Plate, Cover | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Flywheel(#26214583-)
| 67***20 | Washer, Plain (M12) | 8 |
| 67***30 | Bolt (M12x1.25x32) | 8 |
| 67***80 | Gear, Flywheel Ring | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts (Alternator Mounting) (35a) (Sandy And Dusty Spec.)
| 01***30 | Bolt,(For Trimming Dozer) | 1 |
| 01***10 | Nut,(Without Air Conditioner) | 1 |
| 01***23 | Washer,(With Car Heater) | 3 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts (Alternator) (35a) (Brushless Type) (Sandy And Dusty Spec.)
| (6***1) | Alternator A. (35a),(See Fig.A601p-02a7z) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts (Belt Tensioner) (35a) (Sandy And Dusty Spec.)
| 67***30 | Tensioner, Alternator Belt | 1 |
| 67***70 | Belt,Alternator And Water Pump | 1 |
| 67***20 | Capscrew, Flat Head (M8-1.25x25) | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts (Crank Pulley) (Hardening Pulley) (Sandy And Dusty Spec.)
| 67***60 | Pulley,Hardening | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts (Fan Pulley) (Hardening) (Sandy And Dusty Spec.)
| 67***31 | Pulley,Hardening | 1 |
| 67***80 | Pulley,Hardening | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts (Fan Tension Pulley) (Hardening) (Sandy And Dusty Spec.)
| 04***20 | Ring, Retaining | 1 |
| 06***04 | Bearing,Ball | 1 |
| 07***16 | Plug | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts (Water Pump) (Hardening Pulley) (Sandy And Dusty Spec.)
| 67***01 | Water Pump Ass'Y | 1 |
| 67***20 | Seal, Rectangular Ring | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts (Wiring Harness) (Sandy And Dusty Spec.)
| 67***20 | Wiring Harness | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Forwarded Individually Parts(Alternator(35a)Brushless Type)(Inner Parts)(Sandy And Dusty Spec.)
| 60***11 | Alternator A. (35a) | 1 |
| KD***70 | Bushing,Insulate | 1 |
| KD***50 | Regulator Ass'Y | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Front Cover
| 67***40 | Pin, Timing | 1 |
| 67***50 | Ring, Retaining | 1 |
| 67***60 | Screw, Round Head (M5-0.80x17) | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Front Gear Train Cover
| 67***80 | Gasket, Accessory Drive Cover | 1 |
| 67***10 | Plate, Accessory Drive Cover | 1 |
| 67***30 | Bolt, Flange Head (M12-1.75x25) | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Filter
| 67***10 | Cartridge,Fuel | 1 |
| 67***11 | Filter, Fuel - Secondary | 1 |
| 67***20 | Head | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Filter Mounting And Piping
| 01***20 | Bolt,See Fig. K4010-11a0 | 1 |
| 01***25 | Bolt,(With Corrosion Resistor) | 2 |
| 01***30 | Bolt,(Water Separator Spec.) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Hose
| 01***45 | Bolt | 1 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 1 |
| 07***40 | Hose,See Fig. K4010-05a0 | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Feed Pump) (A-Spec.) (Inner Parts)
| DK***20 | Bolt, Joint | 1 |
| DK***60 | Feed Pump Ass'Y | 1 |
| DK***00 | Valve,Check | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Feed Pump) (Z-Spec.) (Inner Parts)
| DK***20 | Bolt, Joint | 1 |
| DK***60 | Feed Pump Ass'Y | 1 |
| DK***00 | Valve,Check | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (A-Spec.) (Inner Parts)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Gasket | 1 |
| DK***40 | Gasket | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (Z-Spec.) (Inner Parts)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Gasket | 1 |
| DK***40 | Gasket | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (A-Spec.) (Inner Parts)
| DK***00 | Gasket | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
| DK***20 | Lever | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (Z-Spec.) (Inner Parts)
| DK***00 | Gasket | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (A-Spec.) (Inner Parts)
| DK***30 | Bearing | 0 |
| DK***20 | Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm | 0 |
| DK***20 | Shim? 0.12mm | 0 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Z-Spec.) (Inner Parts)
| DK***30 | Bearing | 0 |
| DK***20 | Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm | 0 |
| DK***20 | Shim? 0.12mm | 0 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (A-Spec.) (Inner Parts)
| 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-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (Z-Spec.) (Inner Parts)
| 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-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump And Oil Piping (A-Spec.)
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
| 61***40 | Nipple | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump And Oil Piping (Z-Spec.)
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
| 61***40 | Nipple | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Fuel Injection Pump Mounting
| 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-1c-Ca(S/N 26202240-Up) : Engine : Fuel Return
| 01***16 | Bolt, Mount Solenoid Valve | 1 |
| 01***60 | Bolt, Mount | 1 |
| 01***65 | Bolt - Transmission Tube Mounting | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Head Cover(#26202240-26233000)
| 61***10 | Cap, Oil Filler | 1 |
| 67***30 | Bolt (M8x1.25x25) | 6 |
| 67***50 | Washer, Plain (3/8 Inch) | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Head Cover(#26233001-)
| 67***30 | Bolt (M8x1.25x25) | 6 |
| 67***50 | Washer, Plain (3/8 Inch) | 6 |
| 67***81 | Gasket, Valve Cover | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Heat Shield(#26202240-26219482)
| 01***16 | Bolt, Mount Solenoid Valve | 6 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 6 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Heat Shield(#26219483-26233000)
| 01***35 | Stud | 2 |
| 01***16 | Bolt, Mount Solenoid Valve | 6 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Heat Shield(#26233001-)
| 01***35 | Stud | 2 |
| 01***16 | Bolt, Mount Solenoid Valve | 6 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Injection Nozzle
| 67***40 | Nozzle | 1 |
| 67***00 | Nozzle Holder Ass'Y | 6 |
| 67***50 | Seal, Rectangular Ring | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Injection Piping(#26202240-26233000)
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
| 67***80 | Seal, Grommet | 1 |
| 67***90 | Valve, Check (M8x1.25x17.5) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Injection Piping(#26233001-)
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
| 67***80 | Seal, Grommet | 1 |
| 67***90 | Valve, Check (M8x1.25x17.5) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Muffler(#26202240-26219482)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 2 |
| 01***08 | Nut, Accumulator Mounting | 4 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Muffler(#26219483-)
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 2 |
| 01***08 | Nut, Accumulator Mounting | 4 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Cooler And Oil Filter
| 67***50 | Valve, Pressure Relief | 1 |
| 67***30 | Plug, Pipe (1/8 Nptf) | 1 |
| 67***20 | O-Ring,Oil Pressure Plug | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Gauge
| 01***12 | Bolt,(Without R.P.C.U.) | 3 |
| 01***90 | Screw | 1 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Level Sensor And Oil Gauge
| 01***90 | Screw | 1 |
| 01***12 | Bolt | 3 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Pan And Suction Tube
| 09***50 | Liquid Gasket, Lg-7, 150g | 0 |
| 67***60 | Bolt, Mounting (M8-1.25x25) | 2 |
| 67***10 | Gasket (K2) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Pan Bolt
| 67***10 | Bolt, Mounting (M8-1.25 X 25) | 36 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Pressure Switch (Cold Terrain Spec.)(#26219479-26222207)
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 2 |
| 67***30 | Cartridge, Engine Oil Filter | 2 |
| 67***40 | Switch,Oil Pressure | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Pressure Switch (Cold Terrain Spec.)(#26222208-)
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 2 |
| 08***05 | Switch,Engine Oil Pressure | 1 |
| 62***10 | Seal, O-Ring (M10-1.00) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Pressure Switch(#26202240-26222207)
| 67***30 | Cartridge, Engine Oil Filter | 2 |
| 67***40 | Switch,Oil Pressure | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Pressure Switch(#26222208-)
| 08***05 | Switch,Engine Oil Pressure | 1 |
| 62***10 | Seal, O-Ring (M10-1.00) | 1 |
| 67***30 | Cartridge, Engine Oil Filter | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Oil Pump
| 67***11 | Pump, Lubricating Oil | 1 |
| 67***20 | Bolt (M8x1.25x30) | 4 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Piston
| 67***00 | Piston Ring Ass'Y | 6 |
| 67***10 | Pin, Piston | 6 |
| 67***20 | Ring, Retaining | 12 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Rear Hanger
| 67***20 | Bolt (M12x1.75x30) | 2 |
| 67***10 | Bracket, Lifting | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-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-1c-Ca(S/N 26202240-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-1c-Ca(S/N 26202240-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-1c-Ca(S/N 26202240-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-1c-Ca(S/N 26202240-Up) : Engine : Revolution Sensor
| 01***25 | Bolt,(With Corrosion Resistor) | 1 |
| 02***13 | Plug | 1 |
| 61***90 | Spacer | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Rocker Arm
| 67***40 | Bolt | 6 |
| 67***10 | Rod, Push | 12 |
| 67***60 | Washer, Plain (M19) | 12 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Service Parts (Air Cleaner)
| 60***90 | Valve,Dust | 1 |
| 60***40 | Element Assembly, Innner And Outer Air Cleaner | 1 |
| 60***20 | Element Assembly, Outer | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Service Parts (Caution Plate) (English)
| 09***63 | Plate? Instruction,Air Cleaner (Single Element) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Service Parts (Heater Switch)
| 60***70 | Switch,Air Intake Heater | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Service Parts (Muffler)
| 62***80 | Tube,(Forwarded Individually Parts) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Service Parts (Pre-Fuel Filter)
| 07***12 | Gasket,Mechanical Pump Piping | 1 |
| 60***01 | Fuel Filter Ass'Y | 1 |
| 60***21 | Cartridge,Fuel Filter | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Service Parts (Water Separater)
| 07***12 | Gasket,Mechanical Pump Piping | 1 |
| 60***31 | Separator Assembly, Water | 1 |
| 60***60 | Plug,Drain (4d105-5h? 4d105-5t) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Spare Parts
| 04***44 | V-Belt Set,Cooling Fan | 1 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 67***81 | Gasket, Valve Cover | 6 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Starting Motor (5.5kw)
| (6***0) | Starting Motor Ass'Y,(5.5kw) (See Fig.A621p-02a1) | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Starting Motor (5.5kw) (Inner Parts)
| 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-1c-Ca(S/N 26202240-Up) : Engine : Starting Motor Mounting
| 67***11 | Gasket,Starter | 1 |
| 67***10 | Bolt (M10x1.50x35) | 3 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Tachometer Drive Cover
| 67***90 | Cover, Mechanical Tach Drive | 1 |
| 67***20 | Seal, Rectangular Ring | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Tappet
| 67***12 | Tappet, Valve | 12 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Thermostat
| 67***20 | Thermostat | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Thermostat Housing
| 07***25 | Clip,(For Slag Handling) | 2 |
| 67***40 | Bolt, (M8x1.25x35) | 1 |
| 67***71 | Coupling | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Turbocharger Mounting
| 67***10 | Stud ((M10x1.50 (Both Ends) X42)) | 4 |
| 67***20 | Nut (M10x1.50) | 4 |
| 67***30 | Gasket, Turbocharger Mounting | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Turbocharger Oil Piping
| 67***80 | Connector, Male | 2 |
| 67***30 | O-Ring,Turbocharger Drain | 2 |
| 67***10 | Tube,Oil | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Under Plate
| 67***50 | Plate | 1 |
| 67***51 | Plate, Cylinder Block Stiffener | 1 |
| (0***0) | Liquid Gasket, Lg-7, 150g | 0 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Water Connector
| 67***10 | Connector | 1 |
| 67***20 | Bolt (M10-1.50x75) | 3 |
| 67***30 | Seal,Water Inlet Connection | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Water Connector Plug
| 67***10 | Plug, Pipe (1/2-14 Npt) | 2 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Water Pump
| 67***60 | Bolt (M8x1.25x22) | 2 |
| 67***00 | Water Pump Ass'Y | 1 |
| 67***01 | Water Pump Ass'Y | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Water Temperature Sensor
| 01***16 | Screw | 1 |
| 08***10 | Clip,(Without Ripper) | 1 |
| 08***10 | Connector, Clip | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Water Temperature Sensor (Cold Terrain Spec.)
| 01***16 | Screw | 1 |
| 08***10 | Clip,(Without Ripper) | 1 |
| 08***10 | Connector, Clip | 1 |
Komatsu : S6d102e-1c-Ca(S/N 26202240-Up) : Engine : Wiring Harness
| 01***80 | Bolt (M10-1.50x80) | 1 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 2 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
S6D102E-1C-CA(S/N 26202240-UP) serial number reference
The engine serial number plate is located on the left side of the engine block, near the injection pump or valve cover. The engine model code (S6D102E-1C-CA) and serial number are stamped on this plate; match the serial range (26202240-UP) to the catalog to ensure correct parts fitment.
| Prefix | Identifies | Notes |
|---|---|---|
| S6D102E-1C-CA | Engine Model | Komatsu S6D102E-1C-CA engine. Sourced per published references catalog listing for S/N 26202240-UP. The 'CA' suffix denotes a specific regional or emissions configuration variant within the S6D102E-1C family. No further prefix breakdowns (e.g., 3-character PIN prefixes) are explicitly detailed in the provided source text for this specific engine model; the engine model code itself serves as the primary identifier for parts cataloging in this range. Verify with dealer for specific 3-character PIN prefix mapping if required for chassis identification. |
Frequently asked questions
What engine does the Komatsu S6D102E-1C-CA (S/N 26202240-UP) use?
It uses the Komatsu S6D102E-1C-CA 6-cylinder, water-cooled, turbocharged diesel engine, part of the 102-series family.
What is the operating weight of the machine this engine powers?
The operating weight varies by configuration, typically ranging from 20,000 to 60,000 lb for the PC200-6 series excavators.
What replaced the S6D102E-1C-CA engine?
It was succeeded by the S6D102E-1F and S6D102E-1FL engines in the PC200-7 and PC200-8 excavator series.
What S6D102E-1C-CA(S/N 26202240-UP) owners discuss
What are the known powertrain and hydraulic behaviors for the Komatsu S6D102E-1C-CA engine series?
The S6D102E-1C-CA engine is a six-cylinder, turbocharged diesel unit. Community consensus indicates that Komatsu hydraulic systems are smooth and fuel-efficient but sensitive to pump and valve wear. A common failure pattern is that when the main hydraulic pump fails, the engine is often near the end of its service life. Dash 6 generation machines are noted for specific valve problems, particularly in the PC150 and PC120 models, which can lead to poor resale value. The engine and hydraulic pump are closely linked; excessive hydraulic load can drag down engine RPM if the engine cannot produce expected power, or hydraulic weakness may be caused by engine performance issues rather than pump failure. Always verify if the issue affects one function or the entire machine to isolate the cause. The line is generally designed to wear out complete machines all at once rather than individual components failing in isolation. Have your dealer verify the exact hydraulic pressure specifications for this serial range before assuming pump failure.
What undercarriage or wear patterns are typical for machines using this engine type?
Machines equipped with the S6D102E-1C-CA engine, often found in PC200-6 and PC210-6 excavators, exhibit specific undercarriage wear patterns. Track tension and undercarriage wear are critical maintenance items. A machine that drifts or pulls while traveling should not immediately be diagnosed as having a failed travel motor. Check mechanical conditions first, including track tension on both sides, mud or debris packed into one undercarriage, roller condition, and track-chain condition. If mechanical resistance is similar but one track consistently runs slower, hydraulic or final-drive diagnosis becomes more relevant. Test the symptom in both forward and reverse to determine if the same side remains weak. The difference between one side and both sides is critical diagnostic information. Have your dealer verify the track tension and undercarriage component wear limits.
What are the common engine quirks per the S6D102E-1C-CA series?
The S6D102E-1C-CA engine is part of the 102-1 and 102-2 series. Common quirks include sensitivity to air and fuel restrictions. Engine performance issues dominate serious problems, with loss of power, increased fuel usage, or overheating signaling airflow restriction, injector wear, or failing fuel delivery components. If the engine loses power under digging load, check basic restrictions first: air-filter condition, fuel filters, fuel tank venting, intake hoses, and charge-air hoses on turbocharged engines. Loose clamps or damaged pipes are frequent culprits. Watch the engine and hydraulics together; if engine speed remains normal but hydraulic movements become weak, the hydraulic system moves higher on the suspect list. At Heavy Machinery Club, we always try to establish whether the engine is causing the hydraulic weakness or whether the hydraulic system is dragging the engine down. Have your dealer verify the fuel injection timing and injector spray patterns.
What are the common electrical and sensor issues for this engine?
Komatsu excavators rely heavily on electronic control systems, which means that a single faulty sensor or unstable power supply can trigger multiple warning signals. Owners often report intermittent starting, dashboard failure, or machines that randomly shut down. Multiple fault codes should prompt a check of the battery, grounds, and connectors. A battery can show acceptable voltage until the starter is loaded. If the display dims heavily or voltage collapses during starting, perform a proper load and voltage-drop test before ordering a starter. If the machine stopped starting immediately after a filter replacement, check the work that was just performed before assuming that an expensive high-pressure component failed at the same moment. Have your dealer verify the battery load test results and ground integrity.
What should be checked when buying a used machine with the S6D102E-1C-CA engine (S/N 26202240-UP)?
When buying a used machine with the S6D102E-1C-CA engine (S/N 26202240-UP), check the exact serial-prefix specification sheet and installed attachment package. A long stick, wide track shoe, quick coupler, auxiliary hydraulics, or regional emissions configuration can change weight, reach, fuel use, and transport planning. Confirm the exact serial-prefix specification sheet and installed attachment package. A long stick, wide track shoe, quick coupler, auxiliary hydraulics, or regional emissions configuration can change weight, reach, fuel use, and transport planning. Have your dealer verify the exact serial-prefix specification sheet and installed attachment package.
What are the recommended fluid specifications for the S6D102E-1C-CA engine?
For the S6D102E-1C-CA engine, use Komatsu EO engine oil, Komatsu TO hydraulic oil, and Komatsu AXO transmission oil. Use Komatsu HO brake fluid and Komatsu Super-coolant AF-NAC for the cooling system. Have your dealer verify the exact fluid capacities and specifications for this serial range.
What are the common cooling system issues for this engine?
An excavator cooling package operates in an environment full of dust, dirt, and fine debris. Inspect the radiator, hydraulic oil cooler, charge-air cooler where fitted, and air-conditioning condenser. Check the spaces between stacked coolers. Coolant level when cold and fan operation are critical. A machine may look clean from the outside while material is packed between heat exchangers. If temperature rises during heavy work but falls when the excavator is allowed to idle, cooling capacity may be marginal rather than completely absent. If coolant is repeatedly expelled or the system becomes highly pressurized shortly after a cold start, deeper engine diagnosis may be required. Have your dealer verify the cooling system pressure and fan operation.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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