Komatsu S6D95L-1NN-18(S/N 106426-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu S6D95L-1NN-18 engine is a 6-cylinder, water-cooled, direct-injection diesel powerplant used in the Komatsu 95 Series family of heavy equipment. It powers mid-size crawler excavators such as the PC150-3, PC150-5, PC150LC-3, PC150LC-5, PC180-3, PC200-5, PC200-6, and PC210-6, as well as wheel loaders like the WA100-3 and WA120-3. The engine delivers 110 HP at 2,000 rpm with a maximum torque of 41.5 kgm at 1,500 rpm. Production years for the S6D95L-1 series span the late 1990s through the 2000s, serving as the successor to the earlier S6D95L-1 variants and preceding the SAA6D95LE-1 series in Komatsu's industrial engine lineup. Configurations offered include distributor-type fuel pumps and mechanical all-speed governors.
Across the S6D95L-1 generation, Komatsu refined the engine's displacement to 4,890 cm³ with a bore and stroke of 95 mm x 115 mm, optimizing torque output for heavy-duty excavation and loading cycles. The S6D95L-1NN-18 variant specifically denotes a configuration with a serial number prefix of 106426-UP, often associated with the MM and NN sub-series. This engine matters in the used and parts market because it remains a critical replacement for the high-volume PC200 and PC150 excavator fleets still in operation. Its robust mechanical injection system and simple turbocharger design make it a preferred candidate for rebuilds and aftermarket support, ensuring longevity in older machines that lack complex electronic emissions controls.
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-1NN-18(S/N 106426-UP) specifications
Engine
| Model | S6D95L-1NN-18 |
| Series/Generation | S6D95L-1 (95 Series) |
| Cylinders | 6 |
| Arrangement | In-line |
| Bore x Stroke | 95 mm x 115 mm |
| Displacement | 4,890 cm³ (4.89 L) |
| Gross Power | 110 HP (82 kW) @ 2,000 rpm |
| Maximum Torque | 41.5 kgm (300 ft·lb) @ 1,500 rpm |
| High Idling Speed | 2,500 ± 50 rpm |
| Low Idling Speed | 700 ± 25 rpm |
| Minimum Fuel Consumption | 160 g/HPh |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Dry Weight (Engine Only) | 425 kg (937 lb) |
| Operating Weight (Machine) | Not documented for this exact serial range — verify with your dealer |
| Shipping Weight (Machine) | 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
| Overall Length (Engine) | 986 mm (38.8 in) |
| Overall Width (Engine) | 586 mm (23.1 in) |
| Overall Height (Engine) | 876 mm (34.5 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 Speed | 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 | 12.5 L (3.3 gal) |
| Cooling System | 18 L (4.8 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu S6D95L-1NN-18(S/N 106426-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-1NN-18(S/N 106426-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA fluid analysis at every 500-hour interval to monitor engine wear metals, hydraulic particle counts, and coolant pH levels. The S6D95L-1NN-18 relies on Komatsu EO or TO engine oil; check levels daily and change at 250 hours. Monitor the air filter restriction indicator closely, as the Garrett turbocharger is sensitive to intake contamination. Regularly test the coolant SCA concentration to prevent liner cavitation in the 4,890 cm³ block. Track fuel consumption trends to detect injector wear early.
Corrective & Common Repairs
Address common S6D95L-1NN-18 failures by inspecting the Bosch VE distributor-type fuel pump for internal wear or leakage. Check the turbocharger shaft play and housing for oil leaks, a frequent issue in high-hour units. Inspect the oil pump and main bearings for wear, as main bearing failure is a known risk in this series. Verify the mechanical all-speed governor linkage for proper movement and adjust idle speeds to 700 ± 25 rpm low and 2,350 ± 50 rpm high. Replace worn injector nozzles to restore spray pattern and power.
Overhaul & Rebuild Points
Plan for an in-frame overhaul when compression drops below specification or oil consumption exceeds limits. The S6D95L-1NN-18 requires piston and ring replacement, along with cylinder liner honing. Replace the turbocharger if shaft clearance exceeds limits or housing shows significant wear. During overhaul, inspect the crankshaft journals and replace the main bearings (50 mm flanged) and connecting rod bearings (75 mm). Check the camshaft and timing gear case for wear, ensuring proper valve clearance adjustments.
Seasonal & Environment Servicing
In cold climates, ensure the coolant glycol content is sufficient to prevent block freezing and maintain SCA levels. Drain the fuel water separator daily to prevent injector damage from water contamination. In dusty environments, clean the radiator and oil cooler fins frequently to prevent overheating, as the S6D95L-1NN-18 cooling capacity is fixed at 16 liters. Check the air filter pre-cleaner and outer element more often in high-dust conditions. Verify battery terminal tightness and charge status, as cold weather increases cranking load on the 24 V system.
S6D95L-1NN-18(S/N 106426-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 600-311-6220 | Cartridge,Fuel Filter | Fuel system service | Check fitment → |
| 09637-30161 | Plate? Instruction,Air Cleaner (Single Element) | Air intake service | Check fitment → |
| 07000-02135 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 6204-61-5190 | Gasket,Oil Cooler Element | Lubrication service | Check fitment → |
| 600-211-6630 | Plate? Caution,Oil Filter And Bypass Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
S6D95L-1NN-18(S/N 106426-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor and backup speed sensor failure | Faulty speed sensor, broken wiring harness, or corroded connector at the pin interface | 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 and check pump lines |
| CA122 | Intake air pressure sensor feedback voltage too high | Intake pressure sensor failure 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 voltage regulator issue | Replace the alternator or battery; check the voltage regulator |
| CA442 | Battery voltage too high | Alternator overcharging or voltage regulator failure | Replace the alternator or battery; check the voltage regulator |
| 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 |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration, engine load cycle, or operator misuse |
| CA2311 | IMV solenoid valve failure | Faulty IMV solenoid or wire harness damage | Replace the IMV solenoid or inspect the wire harness |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
S6D95L-1NN-18(S/N 106426-UP) attachments & work tools
Wheel Loader Buckets
The S6D95L-1NN-18 engine powers the WA100-3, WA120-3, WA150-3, WA180-3, and WA200-3 wheel loader series. Typical bucket capacities for this class range from 1.0 to 2.5 cubic meters, depending on the specific loader model and material density.
Excavator Attachments
This engine is used in the PC100-3, PC120-3, PC150-3, PC180-3, and PC200-5 excavator series. Standard work tools include digging buckets ranging from 0.3 to 0.8 cubic meters, hydraulic breakers, and tilt rotators, all requiring specific hydraulic flow and pressure ratings.
Grader Blades and Rippers
The GD511A-1 motor grader utilizes this engine class. Standard configurations include a moldboard blade with a typical width of 3.0 to 3.5 meters and a rear ripper with 3 to 5 shanks for soil penetration.
Coupler and Mounting Systems
Work tools are attached via standard quick coupler systems compatible with the loader and excavator frame mounting points. Hydraulic lines must be matched to the machine's auxiliary circuit specifications to ensure proper tool operation.
Hydraulic Kit Requirements
Attachments requiring high flow or high pressure must be connected to the machine's auxiliary hydraulic ports. Factory specifications for hydraulic fluid include Komatsu EO, TO, or AXO oils, and system pressure must be verified against the specific tool's requirements.
Factory Guarding Options
Standard guarding includes ROPS/FOPS certified cabs and engine compartment guards. Optional guarding for specific work environments may include heavy-duty undercarriage guards, side skirts, and tool-specific wear plates.
All S6D95L-1NN-18(S/N 106426-UP) assemblies by section
Every catalogued assembly group for the Komatsu S6D95L-1NN-18(S/N 106426-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Air Cleaner (With Extension Pipe)
| 01***70 | Bolt | 2 |
| 01***06 | Nut | 6 |
| 04***10 | Ring,See Fig. K4010-65a0 | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Air Intake
| 01***30 | Screw | 11 |
| 01***70 | Bolt | 4 |
| 01***85 | Bolt | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Alternator (25a) (Inner Parts)
| 60***30 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***11 | Rear Bracket Ass'Y | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Alternator Mounting (25a)
| 01***35 | Bolt,(Cold Weather Spec.) | 1 |
| 01***25 | Bolt,(With Corrosion Resistor) | 3 |
| 01***95 | Bolt | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Camshaft And Tappet
| 01***20 | Screw | 2 |
| 04***16 | Fitting Wedge | 1 |
| 62***10 | Tappet | 12 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Cooling Fan
| 01***30 | Bolt,(Water Separator Spec.) | 6 |
| 01***30 | Screw | 6 |
| 01***16 | Washer,(With Water Separator) | 6 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Corrosion Resistor
| 01***12 | Bolt,(See Fig.0501) | 2 |
| 01***35 | Screw | 1 |
| 01***50 | Bolt,(For Shipping) | 2 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Crank Pulley
| 01***45 | Bolt,Nylock | 1 |
| 61***20 | Collar,Taper | 1 |
| 61***31 | Plate | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Crankshaft
| 62***00 | Main Metal Ass'Y | 7 |
| 62***00 | Thrust Metal Ass'Y | 1 |
| 62***00 | Thrust Metal Ass'Y | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Cylinder Block
| 01***14 | Bolt,(With Corrosion Resistor) | 1 |
| 04***20 | Pin,Dowel (Welded) | 2 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Cylinder Block Gasket Kit(#.-)
| 01***12 | Washer,Lock? Injection Gear | 1 |
| 01***16 | Washer,Lock? Injection Gear | 1 |
| 07***85 | O-Ring,(Without Fuel Level Gauge) | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Cylinder Block Gasket Kit(#110799-.)
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 07***35 | O-Ring,Hydraulic Oil Filter | 1 |
| 07***50 | O-Ring,Front Cover Plate | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Cylinder Head
| 01***32 | Washer, (Without Emergency Steering) | 25 |
| 02***04 | Plug, Pipe | 1 |
| 07***08 | Plug, Expansion | 6 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Cylinder Head Gasket Kit(#.-)
| 07***40 | O-Ring,Water Pump Mount | 1 |
| 07***18 | O-Ring,Turbocharger Lubricating Pipe | 1 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 2 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Cylinder Head Gasket Kit(#110799-.)
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 2 |
| 08***14 | Band,(For Additional Fuel Strainer) | 2 |
| 08***19 | Band,(Without Air Conditioner) | 2 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Damper
| 01***16 | Bolt,(With Alternator Cover Type) | 6 |
| 62***00 | Damper,(Except Japan Pc200) | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Exhaust Manifold
| 01***25 | Grub Screw | 6 |
| 01***90 | Bolt,(For Large Fan) | 10 |
| 07***08 | Plug,(For W/O. Corrosion Resistor) | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Flywheel
| 01***30 | Bolt | 6 |
| 61***61 | Washer, Plain (14mm) | 6 |
| 62***92 | Gear,Ring | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Flywheel Housing
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 11 |
| 01***05 | Screw | 2 |
| 07***15 | Plug | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Front Cover
| 01***16 | Bolt | 2 |
| 01***20 | Bolt,(With Tachometer Outlet) | 6 |
| 01***16 | Screw | 2 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Front Hanger
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***14 | Bolt,(With Corrosion Resistor) | 1 |
| 01***32 | Washer, (Without Emergency Steering) | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Filter
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
| 01***30 | Screw | 2 |
| 01***45 | Bolt | 2 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Injection Pump (Feed Pump) (Inner Parts)
| DK***20 | Bolt, Joint | 1 |
| DK***00 | Valve,Check | 2 |
| DK***10 | Feed Pump Ass'Y,(Not Shown) | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (Inner Parts)
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
| DK***00 | Adapter | 1 |
| DK***80 | Nut | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (Inner Parts)
| DK***00 | Gasket | 1 |
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)
| 62***10 | Injection Pump Ass'Y | 1 |
| DK***30 | Key,Woodruff | 1 |
| DK***30 | Bearing | 0 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (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 : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Injection Pump Lubricator
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
| 62***30 | Pipe,Oil | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Injection Pump Mounting
| 01***35 | Grub Screw | 4 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Bolt,(With Alternator Cover Type) | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Injection Pump Piping
| 01***25 | Screw | 4 |
| 61***30 | Clip | 1 |
| 62***00 | Clip Ass'Y | 4 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Fuel Return
| 07***95 | Tube,Spill | 1 |
| 07***85 | Clip | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Glow Plug
| 60***70 | Glow Plug | 6 |
| 62***10 | Lead | 5 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Glow Relay
| 60***10 | Relay,Quick Grow System | 1 |
| 60***50 | Controller | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Head Cover
| 01***20 | Bolt,(For Japan Pc200) | 1 |
| 04***50 | Screw | 4 |
| 07***80 | Clamp, Drain Hose | 3 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Idler Gear
| 01***70 | Bolt,(For 75a Alternator) | 1 |
| 04***12 | Pin,Spring (See Fig.0201) | 1 |
| 62***31 | Shank | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Injection Nozzle
| 01***35 | Bolt, Mount Bracket To Floor | 6 |
| 07***00 | Clip | 11 |
| 62***10 | Carrier | 6 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Muffler
| 01***25 | Stud | 4 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Name And Caution (English) (With Corrosion Resistor) (Double Element Type)
| 09***61 | Plate? Instruction,Air Cleaner (Single Element) | 1 |
| 09***01 | Plate? Instruction,(English) (Except Japan) | 1 |
| 60***30 | Plate? Caution,Oil Filter And Bypass Filter | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Nozzle Holder (Inner Parts)
| 62***12 | Holder Ass'Y | 6 |
| DK***00 | Shim? 0.75mm | 0 |
| DK***00 | Shim? 1.200mm | 0 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Oil Cooler
| 01***25 | Bolt,(With Corrosion Resistor) | 18 |
| 01***06 | Nut | 4 |
| 07***12 | Plug | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Oil Filler
| 01***16 | Screw | 4 |
| 61***20 | Cap Assembly, Oil Fill Tube | 1 |
| 61***80 | Gasket, Oil Fill Cap | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Oil Filter
| 01***25 | Bolt,(With Corrosion Resistor) | 4 |
| 07***70 | O-Ring,Front Cover | 1 |
| 60***41 | Cartridge,Engine? Oil Filter | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Oil Level Gauge
| 62***10 | Guide,Oil Gauge | 1 |
| 62***60 | Gauge,Oil | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Oil Pan And Suction Tube
| 01***16 | Bolt, Mount Solenoid Valve | 30 |
| 01***12 | Bolt,(See Fig.0501) | 1 |
| 01***16 | Screw | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Oil Pump
| 01***16 | Screw | 3 |
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
| 62***10 | Valve | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Piston
| 04***12 | Ring, Snap | 12 |
| 62***10 | Bolt | 2 |
| 62***21 | Piston (S) | 6 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Rear Hanger
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 62***40 | Hanger,Rear | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Rocker Arm
| 01***65 | Bolt,(For Alternator Bracket Mount) | 8 |
| 61***30 | Circlip | 2 |
| 62***20 | Spring | 5 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Safety Guard
| 01***16 | Bolt, Mount Solenoid Valve | 5 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***85 | Bolt,(For Reversible Fan) | 2 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Spare Parts
| 04***56 | V-Belt Set,(For Chinese? 13a Alternator) | 1 |
| 07***16 | Gasket,(For Pc750-6) (See Fig.A2110) | 1 |
| 60***41 | Cartridge,Engine Oil Filter (D31s) | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Starting Motor (5.5kw) (Inner Parts)
| 60***10 | Starting Motor Ass'Y,(5.5kw) | 1 |
| KD***30 | Field Coil Ass'Y | 1 |
| KD***30 | Bracket,Center | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Starting Motor Mounting (5.5kw)
| 01***14 | Bolt,(With Corrosion Resistor) | 1 |
| 01***35 | Screw | 3 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Stop Motor
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***70 | Screw | 1 |
| 01***16 | Bolt | 3 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Turbocharger (Inner Parts)
| 62***30 | Turbocharger Ass'Y,(See Fig.0155) | 1 |
| GA***16 | Bolt | 6 |
| GA***35 | Rotor Ass'Y,Center Housing | 1 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Turbocharger Oil Piping
| 01***16 | Screw | 1 |
| 01***20 | Screw | 2 |
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Water Pump
| 01***16 | Bolt (With Air Heater & Conditioner) | 4 |
| 01***16 | Screw | 2 |
| 01***20 | Screw | 4 |
Komatsu : S6d95l-1nn-18(S/N 106426-Up) : Engine : Water Pump Pulley
| 04***56 | V-Belt Set,(For Chinese? 13a Alternator) | 1 |
| 62***51 | Pulley?Non Hardening,(With Tension Pulley) | 1 |
S6D95L-1NN-18(S/N 106426-UP) serial number reference
The engine serial number plate is located on the left side of the engine block, typically near the injection pump or valve cover. To read the prefix, locate the 'S/N' or 'Serial No.' field on the plate; for the S6D95L-1NN-18, the relevant identifier begins with '1NN' followed by the sequential number (e.g., 106426). This engine serial is distinct from the machine chassis PIN.
| Prefix | Identifies | Notes |
|---|---|---|
| 1NN | S6D95L-1NN-18 | Engine model variant. Serial range 106426-UP is explicitly tied to this engine code in parts catalogs and rebuild kit listings. The '1NN' is the engine configuration suffix, not a machine chassis prefix. No 3-character PIN prefixes are documented for this specific engine serial range in the provided sources; the engine serial itself serves as the primary identifier for parts fitment in this context. |
Frequently asked questions
What is the engine model for the Komatsu S6D95L-1NN-18(S/N 106426-UP)?
The engine model is S6D95L-1NN-18, a 6-cylinder, water-cooled, direct-injection diesel engine with a displacement of 4,890 cm³.
What is the operating weight of the machine powered by this engine?
Operating weight varies by configuration and series. For excavators like the PC200-5, weights range from approximately 20,000 to 22,000 lbs depending on the boom, stick, and counterweight configuration.
What engine replaced the S6D95L-1 series?
The S6D95L-1 series was succeeded by the SAA6D95LE-1 series, which incorporates electronic fuel injection and emissions control technologies to meet stricter Tier standards.
What S6D95L-1NN-18(S/N 106426-UP) owners discuss
What are the power and torque specifications for the S6D95L-1NN-18 engine?
What are the common powertrain and hydraulic behaviors reported for machines using this engine series?
What undercarriage or wear patterns are typical for machines equipped with this engine?
What are the known engine quirks or common failure points for the S6D95L-1 series?
What are the common electrical or sensor issues for this engine?
What fluids are recommended for the Komatsu S6D95L-1NN-18 engine and hydraulic system?
What should be checked when buying a used machine with the S6D95L-1NN-18 engine (S/N 106426-UP)?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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