Komatsuengine(no series)
Komatsu S6D95L-1U(S/N 35360-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu S6D95L-1U is a 6-cylinder, water-cooled diesel engine belonging to the 95 Series family, primarily powering the PC200-5 and PC220-5 excavator classes. These machines operate in the 20-ton weight range and were produced during the mid-1990s to early 2000s. The S6D95L-1U succeeded earlier 95 Series variants and was eventually replaced by the S6D102E series engines in subsequent PC200 generations. Configurations offered include standard and LC (Long Counterweight) variants, with the engine delivering approximately 110 HP at 2,000 RPM for the FD60H/70H/80H-5 applications.
Across the 95 Series generation, Komatsu shifted from mechanical injection systems to more refined distributor-type pumps and introduced turbocharging to meet evolving performance demands. The S6D95L-1U remains significant in the used and parts market because it serves as the powerplant for the highly durable PC200-5 platform, a staple in global construction fleets. Its widespread use ensures a robust aftermarket supply of core components, making it a critical reference point for mechanics maintaining legacy 20-ton excavators.
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 S6D95L-1U(S/N 35360-UP) specifications
Engine
| Model | S6D95L-1 (per factory spec sheet for this serial range) |
| Configuration | 6-cylinder in-line, water-cooled, 4-stroke, turbocharged diesel |
| Displacement | 4,890 cm³ (4.89 L; 298 cu in) |
| Bore x Stroke | 95 mm x 115 mm (3.74 in x 4.53 in) |
| Firing Order | 1-5-3-6-2-4 |
| Gross Power | 101 HP (75 kW) @ 2,200 rpm (SAE J1995) |
| Net Power | 95 kW (127 HP) @ 2,200 rpm (SAE J1349) |
| Maximum Torque | 454 N·m (335 lb-ft) @ 1,600 rpm |
| Emissions Tier | Pre-EPA Tier 1 / Pre-EU Stage I |
Weights
| Dry Weight (Engine Only) | 850–950 kg (1,874–2,094 lb) varies by configuration/accessories |
Dimensions
| Overall Length | 1,520 mm (59.8 in) |
| Overall Width | 880 mm (34.6 in) |
| Overall Height | 1,050 mm (41.3 in) |
Performance
| High Idle Speed | 2,500 ± 50 rpm |
| Low Idle Speed | 700 ± 25 rpm |
| Minimum Fuel Consumption | ≤ 220 g/kW·h (at rated power) |
Service capacities (summary)
| Lubricating Oil Capacity | 22 L (5.8 US gal) including oil filter |
| Cooling System Capacity | Not documented for this exact serial range — verify with your dealer |
| Fuel Tank Capacity | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System Capacity | 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.
S6D95L-1U(S/N 35360-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 16.5 L (4.4 US gal) | Komatsu EO-15 or equivalent; viscosity varies by climate |
| Cooling system | Not documented for this exact serial range — verify with your dealer | Super-coolant AF-NAC |
| Fuel tank | Not documented for this exact serial range — verify with your dealer | Not documented |
| Transmission/powertrain compartments | Not documented for this exact serial range — verify with your dealer | Not documented |
| Final drives (each) | Not documented for this exact serial range — verify with your dealer | Not documented |
| Hydraulic system AND tank | Not documented for this exact serial range — verify with your dealer | Komatsu HYDO II or equivalent |
| Axles/differentials | Not documented for this exact serial range — verify with your dealer | Not documented |
| Grease | N/A | Komatsu Lithium Complex Grease |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu S6D95L-1U(S/N 35360-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 S6D95L-1U(S/N 35360-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA fluid analysis at every major service interval to monitor engine wear metals and hydraulic contamination. Check coolant SCA levels at 500 hours to prevent liner cavitation in the S6D95L-1U block. Monitor hydraulic oil particle counts to protect the PC200-5 pump valves. Track fuel dilution and soot levels in the 11-liter oil capacity to determine optimal change intervals based on actual duty cycles rather than fixed schedules.
Corrective & Common Repairs
Address frequent S6D95L-1U issues by inspecting the Bosch VE distributor fuel pump for internal wear and leakage. Check the turbocharger shaft play and diaphragm integrity for boost compensator function. Replace worn piston rings and cylinder liners if compression drops, noting the 95mm bore and 115mm stroke dimensions. Inspect the oil pump and fuel injection lines for leaks common in high-hour PC200-5 engines.
Overhaul & Rebuild Points
Plan major overhauls for the S6D95L-1U around 10,000 to 15,000 hours depending on maintenance history. Replace the cylinder head gasket and valve seals during top-end rebuild. Inspect the crankshaft main bearings and camshaft for wear during bottom-end service. Use factory torque specifications for the cylinder head bolts and flywheel housing to ensure proper sealing and alignment in the FD60H/70H/80H-5 applications.
Seasonal & Environment Servicing
In cold climates, ensure the coolant mixture provides adequate freeze protection for the 7.5 to 8.5-liter system capacity. In dusty environments, inspect the air filter restriction indicator daily and clean the outer element at 250-hour intervals to prevent turbocharger damage. Check the radiator and oil cooler fins for debris buildup to maintain operating temperatures. Verify battery terminal tightness and charge status in extreme heat or cold.
S6D95L-1U(S/N 35360-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-9100 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 600-311-1320 | Plate? Caution,Fuel Filter | Fuel system service | Check fitment → |
| 600-311-8221 | Cartridge,Engine Fuel Filter | Fuel system service | Check fitment → |
| 6136-71-6120 | Cartridge,Engine Fuel Filter | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
S6D95L-1U(S/N 35360-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine speed sensor and backup speed sensor failure | Faulty engine speed sensor, damaged wiring harness, or corroded connector at the sensor or ECM. | Inspect the engine speed sensor and wiring for damage; check connector pins for corrosion; replace the sensor if voltage signals are absent or erratic. |
| CA441 | Battery voltage too low | Weak or discharged battery, faulty alternator, or loose/corroded battery cables. | Check battery charge state and terminal tightness; test alternator output voltage under load; replace battery or alternator as needed. |
| CA442 | Battery voltage too high | Faulty voltage regulator, failed alternator, or poor ground connection causing overcharging. | Test alternator output voltage; inspect ground straps and battery cables for corrosion; replace the voltage regulator or alternator if output exceeds specifications. |
| CA122 | Intake air pressure sensor feedback voltage too high | Shorted sensor signal wire, faulty intake air pressure sensor, or ECM internal fault. | Check sensor wiring for shorts to power; test sensor resistance and output voltage; replace the sensor if readings are out of range. |
| CA123 | Intake air pressure sensor feedback voltage too low | Open sensor signal wire, disconnected sensor, or faulty sensor element. | Inspect wiring harness for open circuits or disconnections; verify sensor connection; replace the sensor if the circuit is intact but readings remain low. |
| CA451 | Common rail pressure sensor feedback value too high | Faulty rail pressure sensor, shorted signal wire, or actual high-pressure condition due to fuel system restriction. | Check rail pressure sensor wiring for shorts; verify actual rail pressure with a mechanical gauge; replace the sensor if the electrical circuit is good but the signal is erroneous. |
| CA452 | Common rail pressure sensor feedback value too low | Open sensor signal wire, disconnected sensor, or low fuel pressure due to clogged filter or failing lift pump. | Inspect sensor wiring for opens; check fuel filter condition and lift pump operation; replace the sensor if the circuit is intact but the signal is low. |
| CA144 | Coolant temperature sensor feedback voltage too high | Shorted coolant temperature sensor signal wire, faulty sensor, or ECM issue. | Check sensor wiring for shorts to power; test sensor resistance at operating temperature; replace the sensor if the circuit is good but resistance is out of spec. |
| CA145 | Coolant temperature sensor feedback voltage too low | Open sensor signal wire, disconnected sensor, or faulty sensor element. | Inspect wiring harness for open circuits; verify sensor connection; replace the sensor if the circuit is intact but readings remain low. |
| CA234 | Engine overspeed | Faulty governor, stuck throttle linkage, faulty speed sensor, or ECM malfunction. | Check throttle linkage for binding; inspect governor components; verify speed sensor operation; replace ECM if internal fault is confirmed. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
S6D95L-1U(S/N 35360-UP) attachments & work tools
Excavator Attachments
The S6D95L-1U engine powers the PC200-5 and PC220-5 excavator series, which utilize standard quick couplers for bucket and tool interchange. Typical bucket capacities for this 20-ton class range from 0.8 to 1.2 cubic meters, varying by configuration/series based on material density and application.
Dozer Attachments
The 6D95L engine family supports D31 and D37 series bulldozers equipped with straight or semi-U dozer blades. Blade widths typically span 2.5 to 3.0 meters, with capacities varying by configuration/series depending on the specific dozer model and ground conditions.
Loader Attachments
WA series wheel loaders powered by this engine family use standard quick-attach systems for buckets and grapples. Bucket capacities for this class generally range from 2.0 to 3.0 cubic meters, varying by configuration/series based on the specific loader model and material type.
Hydraulic Kit Requirements
Attachments requiring auxiliary hydraulics, such as breakers or hammers, must be matched to the machine's specific hydraulic circuit configuration. Factory specifications for hydraulic flow and pressure vary by configuration/series, requiring verification against the specific machine's operation and maintenance manual.
Factory Guarding Options
Factory configurations for this engine class often include heavy-duty guarding for the radiator and oil cooler to protect against debris. Specific guarding options and mounting points vary by configuration/series and should be confirmed via the Komatsu shop manual for the specific machine model.
All S6D95L-1U(S/N 35360-UP) assemblies by section
Every catalogued assembly group for the Komatsu S6D95L-1U(S/N 35360-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Cooling System
Komatsu : S6d95l-1u(S/N 35360-Up) : Cooling System : Cooling Fan
| 01***30 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 6 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 6 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cooling System : Cooling Fan (Sandy And Dusty Spec.)(#56994-)
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 6 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 6 |
| 01***30 | Washer, Spring (Supplied W/Spider Assembly), Washer-Spring | 6 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cooling System : Corrosion Resistor And Piping(#56439-)
| 01***35 | Bolt | 2 |
| 01***08 | Nut,See Fig. K4010-04a0 | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 7 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cooling System : Water Pump And Mounting
| 01***16 | Screw | 5 |
| 01***20 | Screw | 8 |
| 01***55 | Bolt,(With Engine Stop Motor Type) | 3 |
Cylinder Block
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Camshaft And Tappet
| 01***20 | Screw | 2 |
| 04***16 | Fitting Wedge | 1 |
| 62***10 | Tappet | 12 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Crankshaft
| 01***45 | Bolt,Nylock | 1 |
| 01***35 | Bolt, Mount Bracket To Floor | 6 |
| 61***20 | Collar,Taper | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Cylinder Block
| 01***16 | Screw | 1 |
| 01***06 | Nut | 1 |
| 01***10 | Washer,See Fig. K4010-12a0 | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Flywheel And Flywheel Housing (Cold Terrain Spec.)(#81770-)
| 01***30 | Bolt | 6 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 11 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Flywheel And Flywheel Housing(#35360-84733)
| 01***30 | Bolt | 6 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 11 |
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Flywheel And Flywheel Housing(#84734-)
| 01***30 | Bolt | 6 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 11 |
| 01***14 | Bolt,(With Corrosion Resistor) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Front Cover And Gear
| 01***70 | Bolt,(For 75a Alternator) | 1 |
| 01***16 | Bolt | 2 |
| 01***16 | Screw | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Oil Pan
| 01***10 | Bolt, Mount Flasher | 3 |
| 01***12 | Bolt,(Without R.P.C.U.) | 3 |
| 01***16 | Bolt, Mount Solenoid Valve | 28 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Oil Pan (Cold Terrain Spec.)(#81770-)
| 01***12 | Bolt,(Without R.P.C.U.) | 3 |
| 01***16 | Bolt, Mount Solenoid Valve | 28 |
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Block : Piston And Connecting Rod
| 04***12 | Ring, Snap | 12 |
| 62***10 | Bolt | 2 |
| 62***41 | Piston (S) | 6 |
Cylinder Head
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Air Cleaner And Connection (Cold Terrain Spec.)(#81770-)
| 01***95 | Bolt,(For Shipping) | 2 |
| 01***20 | Screw | 2 |
| 01***07 | Nut,Lock | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Air Cleaner And Connection (Double Element Type)(#35360-82575)
| 01***20 | Screw | 2 |
| 01***05 | Screw | 2 |
| 01***05 | Bolt | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Air Cleaner And Connection (Double Element Type)(#82576-)
| 01***20 | Screw | 2 |
| 01***05 | Screw | 2 |
| 01***07 | Nut,Lock | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Air Cleaner And Connection (Single Element Type)(#35360-82575)
| 01***20 | Screw | 2 |
| 01***05 | Screw | 2 |
| 01***05 | Bolt | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Air Cleaner And Connection (Single Element Type)(#82576-)
| 01***20 | Screw | 2 |
| 01***05 | Screw | 2 |
| 01***07 | Nut,Lock | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Air Intake Manifold And Connection
| 01***12 | Bolt | 2 |
| 01***25 | Bolt,(With Corrosion Resistor) | 11 |
| 01***70 | Bolt | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Air Intake Manifold And Connection (For Boost Compensate Type Fuel Injection Pump)
| 01***12 | Bolt | 2 |
| 01***25 | Bolt,(With Corrosion Resistor) | 11 |
| 01***70 | Bolt | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Cylinder Head
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 25 |
| 01***32 | Washer, (Without Emergency Steering) | 25 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Cylinder Head Cover
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
| 04***50 | Screw | 4 |
| 07***80 | Clamp, Drain Hose | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Exhaust Manifold And Turbocharger
| 01***16 | Bolt,(Sandy And Dusty Spec.) | 1 |
| 01***25 | Grub Screw | 4 |
| 01***80 | Bolt (M10-1.50x80) | 11 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Muffler And Mounting
| 01***60 | Bolt (M10-1.50x60) | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Rocker Arm
| 01***65 | Bolt,(For Alternator Bracket Mount) | 8 |
| 61***30 | Circlip | 2 |
| 62***20 | Spring | 5 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Cylinder Head : Turbocharger
| 62***10 | Turbocharger Ass'Y | 1 |
| GA***00 | Clamp | 3 |
| GA***01 | Bolt | 6 |
Electrical System
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Alternator (25a)
| 60***20 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***11 | Rear Bracket Ass'Y | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Alternator (25a) (Brush-Less Type)(#56994-)
| 60***50 | Alternator A. (25a) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***80 | Collar | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Alternator (35a) (Brush-Less Type)(#56709-)
| 60***80 | Alternator A. (35a),(With Hardening Pulley) | 1 |
| 60***20 | Alternator A. (35a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Alternator And Mounting (25a)
| 01***40 | Bolt,(Cold Weather Spec.) | 1 |
| 01***25 | Bolt,(With Corrosion Resistor) | 3 |
| 01***65 | Bolt,(For 35a? 25a Alternator) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Alternator And Mounting (25a) (With Cover)(#56709-)
| 01***40 | Bolt,(Cold Weather Spec.) | 1 |
| 01***20 | Screw | 9 |
| 01***25 | Bolt,(With Corrosion Resistor) | 5 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Alternator And Mounting (25a? 35a) (Brush-Less Type)(#56994-)
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
| 01***25 | Bolt,(With Corrosion Resistor) | 3 |
| 01***70 | Bolt,(For 50a Alternator) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Alternator And Mounting (25a? 35a) (With Cover) (Brush-Less Type)(#56709-)
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
| 01***20 | Screw | 9 |
| 01***25 | Bolt,(With Corrosion Resistor) | 5 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Electrical Wiring (Brush-Less Alternator Type)(#56709-85970)
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***14 | Bolt,(With Corrosion Resistor) | 7 |
| 01***16 | Bolt,(With Alternator Cover Type) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Electrical Wiring (Brush-Less Alternator Type)(#85971-)
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***14 | Bolt,(With Corrosion Resistor) | 6 |
| 01***16 | Bolt,(With Alternator Cover Type) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Electrical Wiring (Cold Terrain Spec.)(#81770-85970)
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***14 | Bolt,(With Corrosion Resistor) | 7 |
| 01***16 | Bolt,(With Alternator Cover Type) | 3 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Electrical Wiring (Cold Terrain Spec.)(#85971-)
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***14 | Bolt,(With Corrosion Resistor) | 6 |
| 01***16 | Bolt,(With Alternator Cover Type) | 3 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Electrical Wiring(#35360-61060)
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***14 | Bolt,(With Corrosion Resistor) | 7 |
| 01***16 | Bolt,(With Alternator Cover Type) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Electrical Wiring(#61061-85970)
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***14 | Bolt,(With Corrosion Resistor) | 7 |
| 01***16 | Bolt,(With Alternator Cover Type) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Electrical Wiring(#85971-)
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***14 | Bolt,(With Corrosion Resistor) | 6 |
| 01***16 | Bolt,(With Alternator Cover Type) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Starting Motor (5.5kw)
| 60***20 | Starting Motor Ass'Y,(5.5kw) | 1 |
| KD***30 | Bracket,Center | 1 |
| KD***40 | Washer Ass'Y,(Not Shown) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Electrical System : Starting Motor And Mounting (5.5kw)
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
| 01***30 | Bolt | 2 |
| 07***05 | O-Ring,(Not Used With Emergency Str.) (K2) | 1 |
Engine Kit
Komatsu : S6d95l-1u(S/N 35360-Up) : Engine Kit : Gasket Kit
| 01***12 | Washer,Lock? Injection Gear | 1 |
| 07***05 | O-Ring,(Not Used With Emergency Str.) (K2) | 1 |
| 07***35 | O-Ring,Hydraulic Oil Filter | 1 |
Fuel System
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Additional Fuel Filter(#56439-)
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
| 60***00 | Fuel Filter Ass'Y | 1 |
| 60***20 | Cartridge,Pref | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Filter And Piping
| 01***20 | Bolt,(For Japan Pc200) | 1 |
| 01***30 | Screw | 2 |
| 01***70 | Bolt | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Feed Pump) (Cold Terrain Spec.)(#81770-)
| DK***20 | Bolt, Joint | 1 |
| DK***00 | Valve,Check | 2 |
| DK***10 | Feed Pump Ass'Y,(Not Shown) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Feed Pump) (For Emergency Stop System)(#48356-87489)
| DK***20 | Bolt, Joint | 1 |
| DK***00 | Valve,Check | 2 |
| DK***20 | Pump,Priming | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Feed Pump) (For Emergency Stop System)(#87490-)
| DK***20 | Bolt, Joint | 1 |
| DK***00 | Valve,Check | 2 |
| DK***10 | Feed Pump Ass'Y,(Not Shown) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Feed Pump)(#35360-60957)
| DK***20 | Bolt, Joint | 1 |
| DK***00 | Valve,Check | 2 |
| DK***20 | Pump,Priming | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Feed Pump)(#60958-)
| DK***20 | Bolt, Joint | 1 |
| DK***00 | Valve,Check | 2 |
| DK***10 | Feed Pump Ass'Y,(Not Shown) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2) (Cold Terrain Spec.)(#81770-)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
| DK***20 | Limiter | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2) (For Emergency Stop System)(#48356-87489)
| DK***00 | Adapter | 1 |
| DK***00 | Nut,Lock | 1 |
| DK***00 | Housing | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2) (For Emergency Stop System)(#87490-)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
| DK***20 | Limiter | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#35360-60957)
| DK***11 | Governor Ass'Y | 1 |
| DK***00 | Adapter | 1 |
| DK***00 | Nut,Lock | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#60958-)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
| DK***20 | Limiter | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2) (Cold Terrain Spec.)(#81770-)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
| DK***20 | Cover | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2) (For Emergency Stop System)(#48356-87489)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
| DK***00 | Bushing | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2) (For Emergency Stop System)(#87490-)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
| DK***00 | Bushing | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#35360-60957)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
| DK***20 | Cover | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#60958-)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
| DK***20 | Cover | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2) (Cold Terrain Spec.)(#81770-)
| 62***10 | Injection Pump Ass'Y | 1 |
| 62***11 | Injection Pump Ass'Y | 1 |
| DK***30 | Key,Woodruff | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2) (For Emergency Stop System)(#48356-87489)
| 62***30 | Injection Pump Ass'Y | 1 |
| DK***30 | Key,Woodruff | 1 |
| DK***30 | Bearing | 0 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2) (For Emergency Stop System)(#87490-)
| 62***31 | Injection Pump Ass'Y | 1 |
| DK***30 | Key,Woodruff | 1 |
| DK***30 | Bearing | 0 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#35360-60957)
| 62***61 | Injection Pump Ass'Y | 1 |
| DK***30 | Key,Woodruff | 1 |
| DK***30 | Bearing | 0 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#60958-)
| 62***11 | Injection Pump Ass'Y | 1 |
| 62***62 | Injection Pump Ass'Y | 1 |
| DK***30 | Key,Woodruff | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2) (Cold Terrain Spec.)(#81770-)
| 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 : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2) (For Emergency Stop System)(#48356-87489)
| 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 : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2) (For Emergency Stop System)(#87490-)
| 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 : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#35360-60957)
| 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 : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#60958-)
| 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 : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump And Piping
| 01***35 | Stud | 4 |
| 01***25 | Screw | 4 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump And Piping (Boost Compensate Type)
| 01***35 | Stud | 4 |
| 01***25 | Screw | 4 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump And Piping (Cold Terrain Spec.)(#81770-)
| 01***35 | Stud | 4 |
| 01***25 | Screw | 4 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Injection Pump And Piping (For Emergency Stop System)(#48356-)
| 01***35 | Stud | 4 |
| 01***25 | Screw | 4 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Nozzle And Spill Pipe
| 01***35 | Bolt, Mount Bracket To Floor | 6 |
| 07***80 | Clip | 3 |
| 07***00 | Clip | 13 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Fuel Nozzle And Spill Pipe (For Boost Compensate Type Fuel Injection Pump)
| 01***35 | Bolt, Mount Bracket To Floor | 6 |
| 07***80 | Clip | 3 |
| 07***00 | Clip | 13 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Fuel System : Water Separator(#56439-)
| 07***12 | Gasket,Mechanical Pump Piping | 1 |
| 60***31 | Separator Assembly, Water | 1 |
| 60***60 | Plug,Drain (4d105-5h? 4d105-5t) | 1 |
Lubricating Oil System
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Cooler (Large Capacity Type)(#56709-72459)
| 01***40 | Screw | 18 |
| 01***06 | Nut | 4 |
| 07***12 | T/Plug, Plug,(For Power Tilt Mech Angle) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Cooler(#35360-51310)
| 01***25 | Bolt,(With Corrosion Resistor) | 18 |
| 01***06 | Nut | 4 |
| 07***12 | T/Plug, Plug,(For Power Tilt Mech Angle) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Cooler(#51311-68299)
| 01***25 | Bolt,(With Corrosion Resistor) | 18 |
| 01***06 | Nut | 4 |
| 07***12 | T/Plug, Plug,(For Power Tilt Mech Angle) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Cooler(#68300-72459)
| 01***40 | Screw | 18 |
| 01***06 | Nut | 4 |
| 07***12 | T/Plug, Plug,(For Power Tilt Mech Angle) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Cooler(#72460-)
| 01***40 | Screw | 18 |
| 01***06 | Nut | 4 |
| 07***12 | T/Plug, Plug,(For Power Tilt Mech Angle) | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Filter (Cold Terrain Spec.)(#81770-)
| 01***65 | Bolt,(For 35a? 25a Alternator) | 2 |
| 07***70 | O-Ring,Front Cover | 2 |
| 07***17 | Plug | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Filter(#35360-48355)
| 01***25 | Bolt,(With Corrosion Resistor) | 2 |
| 01***90 | Bolt | 2 |
| 60***41 | Cartridge,Engine? Oil Filter | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Filter(#48356-83350)
| 01***25 | Bolt,(With Corrosion Resistor) | 2 |
| 01***90 | Bolt | 2 |
| 07***70 | O-Ring,Front Cover | 1 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Filter(#83351-)
| 01***30 | Bolt,(Water Separator Spec.) | 4 |
| 01***20 | Bolt,(For Japan Pc200) | 2 |
| 01***25 | Bolt,(With Corrosion Resistor) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Lubricating Oil Pump And Suction Pipe
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Screw | 4 |
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
Komatsu : S6d95l-1u(S/N 35360-Up) : Lubricating Oil System : Turbocharger Lubricating Oil Piping
| 01***35 | Bolt, Mount Bracket To Floor | 1 |
| 01***40 | Bolt,(Shim 3-Piece) | 1 |
| 01***16 | Screw | 5 |
S6D95L-1U(S/N 35360-UP) serial number reference
The engine serial number plate is stamped on the engine block, typically on the left side near the injection pump. The machine serial number (S/N 35360-UP) is located on the chassis plate, often riveted to the right-hand side of the cab on the lower frame or stamped into the front frame casting. The prefix 'S6D95L-1U' identifies the engine model, while the number following 'S/N' identifies the specific machine build sequence.
| Prefix | Identifies | Notes |
|---|---|---|
| S6D95L-1U | Engine | Identifies the S6D95L-1U engine family. The source text explicitly lists 'S6D95L-1U S/N 35360-UP' as the serial range for this engine configuration in the parts catalog. The 'U' suffix typically denotes a specific application or emissions variant within the S6D95L-1 series, though the exact meaning of 'U' is not defined in the provided text. The base model 'S6D95L-1' is confirmed to share data with the S6D95L-1U for this page. |
| S6D95L-1U-L | Engine | Identifies the S6D95L-1U-L engine variant. Listed in the parts catalog as a separate variant with the same serial range 'S/N 35360-UP'. The '-L' suffix likely indicates a specific configuration (e.g., long stroke or specific mounting), but the source text does not define it explicitly. Data is tied to the S6D95L-1U family. |
| S6D95L-1U-C | Engine | Identifies the S6D95L-1U-C engine variant. Listed in the parts catalog as a separate variant with the same serial range 'S/N 35360-UP'. The '-C' suffix likely indicates a specific configuration (e.g., compact or specific emissions), but the source text does not define it explicitly. Data is tied to the S6D95L-1U family. |
| S6D95L-1 | Engine | Identifies the base S6D95L-1 engine. The source text states that 'S6D95L-1' data applies to the S6D95L-1U. This engine is a 6-cylinder, water-cooled, direct injection diesel engine. It is commonly used in PC200-5 and PC200-6 series excavators. The 'L' indicates a long stroke variant within the 95mm bore family. |
| 6D95L-1 | Engine | Identifies the 6D95L-1 engine. The source text lists this in service manuals alongside S6D95L-1. It is a non-turbocharged version of the S6D95L-1. The source text provides performance curves for 6D95L-1 (90-95 HP) and S6D95L-1 (110 HP). The serial number break for the engine itself is not explicitly tied to the 35360-UP range in the text, but it is part of the same engine family covered by the S6D95L-1U catalog. |
Frequently asked questions
What is the engine model?
The engine model is the Komatsu S6D95L-1U, a 6-cylinder, water-cooled, turbocharged diesel engine from the 95 Series family.
What is the operating weight of the machine?
The operating weight varies by configuration and series, typically ranging from 20,000 to 22,000 lb (9,072 to 10,000 kg) for the PC200-5 class excavators.
What replaced it?
The S6D95L-1U was replaced by the S6D102E series engines in subsequent generations of the PC200 excavator line.
What S6D95L-1U(S/N 35360-UP) owners discuss
What is the net horsepower and maximum torque rating for the S6D95L-1 engine variant?
The S6D95L-1 engine produces 110 HP at 2,000 rpm with a maximum torque of 41.5 kgm at 1,500 rpm. This rating applies to the FD60H, FD70H, and FD80H-5 machine applications. Other variants in the 6D95L-1 series produce 90 HP or 95 HP depending on the specific machine model and serial range. Torque values vary by configuration/series.
What are the known powertrain and hydraulic behaviors associated with this engine series?
The engine utilizes a mechanical fuel injection system with a boost compensator to increase fuel delivery during high-load acceleration, improving exhaust color and turbo performance. The hydraulic system relies on a main pump that can cause engine derating if the load exceeds the engine's power curve. Owners report that hydraulic weakness when hot often indicates internal pump or valve leakage rather than pump failure, as cold performance remains normal.
What undercarriage or wear patterns are typical for machines powered by this engine?
Machines equipped with this engine class, such as the PC200-5 and PC220-5, exhibit typical undercarriage wear on track rollers and chain links due to high torque output in earthmoving applications. Track tensioners frequently require adjustment due to vibration. Final drive noise is often linked to oil contamination or low oil levels rather than immediate mechanical failure.
What are the common electrical or sensor issues for this engine series?
The engine relies on electronic control systems that can trigger multiple warning signals from a single faulty sensor or unstable power supply. Common issues include intermittent starting, dashboard failures, and random shutdowns. Owners report that checking battery state of charge, engine/chassis grounds, and main starter cables is critical before diagnosing complex electrical faults.
What is the oil capacity and recommended fluid specification for the S6D95L-1 engine?
The engine oil capacity is 16.5 liters (4.4 gallons). Komatsu recommends using Komatsu EO or TO diesel engine oil. Hydraulic systems require Komatsu HO or AXO hydraulic oil. Coolant capacity varies by machine configuration; verify with the specific operation and maintenance manual for the host machine.
What are the critical maintenance quirks for the S6D95L-1 series?
Valve clearance drift is a known issue leading to bearing wear or head gasket problems if not addressed. Torque specifications for main bearings, rod bearings, head bolts, and rocker shafts must be followed precisely using a calibrated torque wrench. Improper torque or clearance leads to poor performance and leaks. The boost compensator spring tension should be checked to ensure proper fuel-air mixture during acceleration.
What should be checked when buying a used machine with the S6D95L-1U(S/N 35360-UP) engine?
Verify the engine serial number matches the S6D95L-1U designation and check for main bearing wear, which is a known failure point. Inspect the turbocharger for shaft play and check the boost compensator diaphragm for leaks. Test hydraulic performance both cold and hot to identify internal leakage. Check for coolant expulsion under pressure, which indicates deeper engine issues. Have your dealer verify the exact serial range specifications and emissions package.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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