Komatsu S4D105-5E(S/N 101262-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu S4D105-5E is a four-cylinder, direct-injection diesel engine belonging to the 105 Series, specifically designated for the PW100-1 wheeled excavator class. This engine powers machines in the 9,182 to 12,688 lb operating weight range, a class defined by compact radius and utility-focused applications. Production for the PW100-1 series spans multiple generations, with the S4D105-5E covering serial numbers 101262 through the OEM part reference. It succeeded earlier iterations such as the S4D105-3 and preceded later builds utilizing the S6D95L-1D and S6D95L-1W engines. Configurations offered include standard utility setups with varying attachment packages and regional emissions compliance options.
Across the 105 Series lineage, the shift from the S4D105-3 to the S4D105-5E reflects Komatsu's adaptation to evolving emissions standards and performance demands. The S4D105-5E maintains the robust architecture of its predecessors while integrating updated fuel and cooling systems to meet Tier 4 Interim requirements. In the used and parts market, this engine remains critical because it powers the widely distributed PW100-1 excavator, a staple in municipal and utility work. Its longevity and the availability of comprehensive overhaul kits ensure it remains a cost-effective powerplant for fleet managers seeking reliable, mid-size wheeled excavator performance without the complexity of larger mining engines.
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 S4D105-5E(S/N 101262-UP) specifications
Engine
| Model | S4D105-5E |
| Series/Generation | S4 Series, Build 5E |
| Displacement | 4.33 L (264.2 cu in) |
| Cylinders | 4 |
| Arrangement | Inline, 4-stroke cycle, turbocharged |
| Bore | 105 mm |
| Stroke | 125 mm |
| Firing Order | 1-2-4-3 |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | Not documented for this exact serial range — verify with your dealer |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Engine Dry Weight | 540 kg (1,190 lb) |
Dimensions
| Engine Overall Length | 986 mm (38.8 in) |
| Engine Overall Width | 776 mm (30.6 in) |
| Engine Overall Height | 1,375 mm (54.1 in) |
Performance
| Gross Power | 90 HP (67 kW) @ 2,400 rpm |
| Net Power | 90 HP (67 kW) @ 2,400 rpm |
| Maximum Torque | 32 kgm (314 N·m) @ 1,400 rpm |
| High Idling Speed | 2,600 - 2,700 rpm |
| Low Idling Speed | 730 - 780 rpm |
| Min. Fuel Consumption Ratio | 165 g/HP·h |
Service capacities (summary)
| Engine Oil Capacity | 18 L (4.76 gal) |
| Cooling System Capacity | 40 L (10.6 gal) |
| 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.
S4D105-5E(S/N 101262-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 13 L (3.4 US gal) | Komatsu EO-10W-30 or EO-15W-40 diesel engine oil; viscosity varies by climate (10W-30 for cold, 15W-40 for moderate/hot) |
| Cooling system | 22 L (5.8 US gal) | Komatsu Super Coolant AF-NAC |
| Fuel tank | Not documented for this exact serial range — verify with your dealer | ASTM D975 No.1 and No.2 diesel fuel |
| Transmission/powertrain compartments | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Final drives (each) | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Hydraulic system AND tank | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Axles/differentials | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Grease | N/A | Komatsu EP Lithium Grease or equivalent |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu S4D105-5E(S/N 101262-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 S4D105-5E(S/N 101262-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA fluid analysis at every 500-hour interval to monitor engine wear metals and hydraulic contamination. Check coolant SCA concentration at 500 hours to prevent liner cavitation in the S4D105-5E block. Monitor DEF levels daily on Tier 4 builds to ensure SCR system efficiency. Track fuel dilution and soot levels in the engine oil to predict injector or piston ring wear before catastrophic failure occurs on this specific serial range.
Corrective & Common Repairs
Address intermittent starting or random shutdowns by inspecting the Electronic Control Module (ECM) power supply and sensor wiring harnesses. Replace worn hydraulic seals to fix leaks in the main pump or swing motor common to the PW100-1 chassis. Inspect the turbocharger Type T04B for shaft play or oil leaks. Check the fuel feed pump and filter housing for air ingress, which causes power loss and hard starting in the 4D105-5/S4D105-5 platform.
Overhaul & Rebuild Points
Plan inframe overhauls for the S4D105-5E around 10,000 to 12,000 hours based on compression test results and oil consumption rates. Replace piston rings and cylinder liners using the specific 105 Series overhaul kit. Inspect the crankshaft main and rod bearings for scoring during disassembly. Verify valve seat integrity and replace camshaft followers if wear exceeds factory limits to restore proper valve timing and compression.
Seasonal & Environment Servicing
In cold climates, verify the operation of the thermostart system for reliable cold starts. Drain the fuel water separator daily to prevent ice formation in the lines. In dusty environments, clean the radiator and oil cooler fins frequently to prevent overheating. Inspect the air pre-cleaner and outer air filter element more often in high-dust conditions. Ensure the cooling system uses Komatsu Super-coolant AF-NAC to prevent freeze damage and corrosion in extreme temperatures.
S4D105-5E(S/N 101262-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 07000-02135 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 6127-61-2971 | O-Ring,Oil Cooler Element | Lubrication service | Check fitment → |
| 6136-61-2190 | O-Ring,Oil Cooler Element | Lubrication service | Check fitment → |
| 07002-03334 | O-Ring, At Transmission Filter | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
S4D105-5E(S/N 101262-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 connector | Replace the speed sensor and verify voltage at the pin connector |
| CA111 | Internal engine controller (ECM) fault | Critical internal failure of the Electronic Control Module | Replace or reprogram the ECM |
| CA451 | Common rail pressure sensor feedback value too high | Malfunction in the rail pressure sensor or actual overpressure condition | Diagnose the fuel rail pressure sensor or check pump lines |
| CA452 | Common rail pressure sensor feedback value too low | Malfunction in the rail pressure sensor or low pressure condition | Diagnose the fuel rail pressure sensor or check pump lines |
| CA122 | Intake air pressure sensor feedback voltage too high | Faulty intake pressure sensor or wiring issue | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure sensor feedback voltage too low | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA153 | Intake air temperature sensor feedback voltage too high | 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 | Replace or test the IAT sensor |
| 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 | Failing alternator or voltage regulator | Replace the alternator or battery; check the voltage regulator |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
S4D105-5E(S/N 101262-UP) attachments & work tools
Excavator Attachments
The S4D105-5E engine (S/N 101262-UP) powers the PW100-1 and PW100-3 wheeled excavators. Factory configurations for these models include standard digging buckets, trenching buckets, and rock buckets. Coupler systems vary by configuration/series; verify specific quick-attach compatibility with the dealer for the exact machine serial number.
Dozer Attachments
The S4D105-5E engine is not listed for the D31A, D31P, D31S, or D31Q dozer series in the provided equipment guide for this specific serial range. Dozer blade and ripper configurations for the D31 series are associated with other engine variants in the source data.
Grader Attachments
The S4D105-5E engine is not listed for the GD22AC-1A or GD28AC-1A motor grader series in the provided equipment guide for this specific serial range. Grader moldboard and ripper configurations for these models are associated with other engine variants in the source data.
Hydraulic System Notes
Work tools requiring auxiliary hydraulics (e.g., breakers, hammers) must match the machine's hydraulic kit arrangement. Factory spec sheets for the PW100 series indicate standard hydraulic flow rates; verify specific flow requirements with your dealer to ensure tool compatibility with the machine's pump capacity.
Engine Identification
The S4D105-5E engine (S/N 101262-UP) is distinct from the S4D102E series and 4D105-3 series. Sources confirm the S4D105-5E is used in the PW100-1 (S/N 1003-Up) and PW100-3 (S/N the OEM part reference-Up) wheeled excavators. Do not assume compatibility with D31 or GD series machines without explicit dealer confirmation for the specific serial range.
All S4D105-5E(S/N 101262-UP) assemblies by section
Every catalogued assembly group for the Komatsu S4D105-5E(S/N 101262-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Cooling And Electrical Systems
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Alternator And Mounting
| 01***60 | Bolt,(Without Alternator Bracket) | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Alternator(#101262-153564)
| 60***51 | Alternator A. (25a) | 1 |
| KD***52 | Bolt,Through | 3 |
| KD***70 | Rear Bracket Ass'Y | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Alternator(#153565-162069)
| 60***40 | Alternator A. (25a),(See Fig.0641) | 1 |
| KD***52 | Bolt,Through | 3 |
| KD***70 | Rear Bracket Ass'Y | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Alternator(#162070-)
| 60***30 | Alternator A. (25a),(With Non Hardening Pulley) | 1 |
| KD***57 | Bearing,Ball? Front | 1 |
| KD***70 | Bracket,Front | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Corrosion Resistor (Except Japan)
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***29 | Washer,Spring (Cold Weather Spec.) | 4 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 4 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Heater Signal And Relay Switch
| 60***70 | Switch,Air Intake Heater | 1 |
| 60***60 | Switch,Heater Relay | 1 |
| 60***71 | Signal,Signal | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Starting Motor (1/2) (7.5kw) (Except Japan)
| 60***81 | Starting Motor Ass'Y,7.5kw | 1 |
| KD***01 | O-Ring | 1 |
| KD***70 | Center Bracket A | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Starting Motor (1/2)(#102089-162079)
| 60***43 | Starting Motor A.,(5.5kw) (See Fig.0661) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***01 | O-Ring | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Starting Motor (1/2)(#162080-)
| 60***80 | Starting Motor Ass'Y,(5.5kw) | 1 |
| KD***30 | Bracket,Center | 1 |
| KD***50 | O-Ring | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Starting Motor (2/2) (7.5kw) (Except Japan)
| KD***01 | Washer,Seal | 2 |
| KD***30 | Holder | 1 |
| KD***05 | Terminal Ass'Y | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Starting Motor (2/2)(#102089-162079)
| KD***01 | Washer,Seal | 2 |
| KD***80 | Shift Lever Ass'Y | 1 |
| KD***30 | Contactor,Moving | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Starting Motor (2/2)(#162080-)
| KD***50 | O-Ring | 1 |
| KD***30 | Cap, Gum | 1 |
| KD***10 | Ring,Clip | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Starting Motor And Mounting
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***36 | Washer,Radio Controlled Slag Handling | 3 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Starting Motor(#101262-102088)
| 60***42 | Starting Motor A.,(5.5kw) (See Fig.2546) | 1 |
| KD***10 | Clutch Ass'Y,Over Running | 1 |
| KD***80 | Shift Lever Ass'Y | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Water Pump And Cooling Fan (Tropical Sandy And Dusty Spec.) (Except Japan)(#150007-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***50 | Bolt | 4 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Water Pump And Cooling Fan(#101262-149999)
| 01***18 | Bolt | 2 |
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 2 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cooling And Electrical Systems : Water Pump And Cooling Fan(#150007-)
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***50 | Bolt | 4 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 2 |
Cylinder Block
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Camshaft And Tappet
| 01***25 | Bolt,(Without Auto Priming System) | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
| 01***16 | Washer,(For Shipping) | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Crankshaft
| 61***11 | Bolt,Nylock (K2) | 1 |
| 61***00 | Metal Ass'Y | 1 |
| 61***50 | Thrust Metal Ass'Y | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Cylinder Block
| 01***20 | Bolt | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Cylinder Block(#101262-149999)
| 01***20 | Bolt | 2 |
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 4 |
| 01***30 | Bolt,(For France Noise Suppression) | 8 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Engine Support
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Flywheel And Flywheel Housing
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 8 |
| 01***70 | Bolt, Spacer | 2 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 6 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Front Cover
| 01***20 | Bolt,(Sandy? Dusty Terrain Spec.) | 6 |
| 01***22 | Bolt,(Cold Terrain Spec.) | 4 |
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Oil Pan
| 01***22 | Bolt,(Cold Terrain Spec.) | 20 |
| 01***25 | Bolt,(Without Auto Priming System) | 8 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Block : Piston And Connecting Rod
| 04***18 | Ring, Retaining | 2 |
| 61***40 | Crank Pin Metal A | 4 |
| 61***00 | Connecting Rod Ass'Y | 4 |
Cylinder Head
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Head : Air Cleaner(#101262-151706)
| 04***10 | Ring,See Fig. K4010-65a0 | 1 |
| 09***60 | Plate? Instruction,(Japanese-English) (Not Shown) | 1 |
| 60***80 | Valve,Dust | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Head : Air Intake Manifold And Connection
| 01***65 | Bolt,(For Alternator Bracket Mount) | 6 |
| 01***75 | Bolt,(See Fig.0142) | 4 |
| 01***80 | Bolt,(See Fig.0131) | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Head : Cylinder Head
| 01***25 | Bolt,(Sandy? Dusty Terrain Spec.) | 1 |
| 01***30 | Bolt,(For France Noise Suppression) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Head : Cylinder Head Cover
| 01***16 | Bolt,(For Slag Handling) | 1 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 1 |
| 07***23 | Clamp - Hose | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Head : Exhaust Manifold And Turbocharger
| 01***60 | Bolt (M10-1.50x60) | 2 |
| 01***80 | Bolt, Mount Strainer Flange | 6 |
| 01***60 | Screw | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Head : Muffler
| 01***30 | Bolt,(For France Noise Suppression) | 4 |
| 01***70 | Bolt, Spacer | 3 |
| 01***32 | Washer,(With Auto Emergency Steering) | 3 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Head : Rocker Arm
| 01***80 | Bolt,(Shim 5 Pieces Over) | 1 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 8 |
| 01***36 | Washer,Radio Controlled Slag Handling | 4 |
Komatsu : S4d105-5e(S/N 101262-Up) : Cylinder Head : Turbocharger (Except Japan)
| 61***00 | Turbocharger Ass'Y,(See Fig.2141) | 1 |
| 61***01 | Turbocharger Ass'Y,(See Fig.2141) | 1 |
| 61***02 | Turbocharger Ass'Y | 1 |
Fuel System
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Fuel Filter
| 01***16 | Bolt (Welded) | 2 |
| 01***20 | Bolt | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Fuel Injection Pump (Feed Pump)(#150007-)
| DK***20 | Bolt, Joint | 1 |
| DK***20 | Pump,Priming | 1 |
| DK***00 | Adapter | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#150007-)
| DK***40 | Gasket,Air Compressor | 2 |
| DK***00 | Nut,Cap | 1 |
| DK***20 | Cover | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#150007-)
| DK***00 | Adapter | 1 |
| DK***00 | Nut,Lock | 1 |
| DK***10 | Pin,Spring | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Fuel Injection Pump (Pump)(#150007-)
| 61***00 | Injection Pump Ass'Y | 1 |
| DK***20 | Plunger Ass'Y | 4 |
| DK***20 | Cover | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Fuel Injection Pump And Piping
| 01***20 | Bolt | 3 |
| 01***30 | Bolt | 1 |
| 01***35 | Bolt | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Fuel Injection Pump And Piping(#101262-103414)
| 01***30 | Bolt,(Cold Weather Spec.) | 1 |
| 01***55 | Bolt | 1 |
| 01***70 | Bolt | 3 |
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Nozzle Holder
| 01***55 | Bolt,(For Trimming Dozer) | 8 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 8 |
| 07***12 | Gasket,Mechanical Pump Piping | 2 |
Komatsu : S4d105-5e(S/N 101262-Up) : Fuel System : Water Separator
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 60***00 | Water Separator A.,(4d105-5h? 4d105-5t) | 1 |
| 60***60 | Plug,Drain (4d105-5h? 4d105-5t) | 1 |
Lubricating Oil System
Komatsu : S4d105-5e(S/N 101262-Up) : Lubricating Oil System : Lubricating Oil Cooler
| 01***25 | Bolt,(Without Auto Priming System) | 5 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***35 | Bolt,(Without Auto Priming System) | 9 |
Komatsu : S4d105-5e(S/N 101262-Up) : Lubricating Oil System : Lubricating Oil Filter
| 01***90 | Bolt | 1 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***25 | Bolt (M10x1.50x25) | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Lubricating Oil System : Lubricating Oil Pump And Suction Pipe(#101262-149999)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***50 | Bolt,(For Trimming Dozer) | 4 |
Komatsu : S4d105-5e(S/N 101262-Up) : Lubricating Oil System : Lubricating Oil Pump And Suction Pipe(#150007-)
| 01***25 | Bolt,(Without Auto Priming System) | 1 |
| 01***30 | Bolt,(Cold Terrain Spec.) | 3 |
| 01***40 | Bolt,(For Position Fixing) | 1 |
Komatsu : S4d105-5e(S/N 101262-Up) : Lubricating Oil System : Turbocharger Lubricating Oil Piping
| 01***22 | Bolt,(Cold Terrain Spec.) | 2 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 2 |
Tool And Kit
Komatsu : S4d105-5e(S/N 101262-Up) : Tool And Kit : Gasket Kit
| 01***16 | Washer,Lock? Injection Gear | 1 |
| 07***65 | O-Ring,Injection Pump Case | 1 |
| 07***95 | O-Ring,Transmission Strainer | 1 |
S4D105-5E(S/N 101262-UP) serial number reference
Locate the metal data plate riveted to the right-hand side of the cab on the lower frame, typically behind the front idler or beneath the operator's window. Read the three-character model prefix (e.g., PW100) followed by the serial number range to identify the correct engine variant.
| Prefix | Identifies | Notes |
|---|---|---|
| PW100-1 | Wheeled hydraulic excavator | S/N 1003-149999. Factory equipment guide ties this range to the S4D105-5E engine. Verify with dealer for exact configuration. |
| PW100-3 | Wheeled hydraulic excavator | S/N 150007-Up. Factory equipment guide ties this range to the S4D105-5E engine. Verify with dealer for exact configuration. |
Frequently asked questions
What engine does the Komatsu PW100-1 use?
The Komatsu PW100-1 wheeled excavator uses the Komatsu S4D105-5E engine for serial numbers 101262 through the OEM part reference. Earlier builds may use the S4D105-3, while later builds transition to the S6D95L-1D or S6D95L-1W engines.
What is the operating weight of the Komatsu PW100-1?
The operating weight of the Komatsu PW100-1 varies by configuration and attachment package, typically ranging from 9,182 lb to 12,688 lb (4,165 kg to 5,755 kg).
What replaced the Komatsu S4D105-5E engine?
The S4D105-5E was succeeded by the S6D95L-1D and S6D95L-1W engines in later production runs of the PW100-1 series. These six-cylinder engines offer increased power and efficiency for updated emissions standards.
What S4D105-5E(S/N 101262-UP) owners discuss
What are the known powertrain and hydraulic behaviors for machines using the S4D105-5E engine?
What undercarriage or wear patterns are typical for this machine type?
What are the specific quirks or characteristics of the S4D105-5E engine series?
What are common electrical or sensor issues reported for these machines?
What should be checked when buying a used machine with the S4D105-5E engine?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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