Komatsuengine(no series)

Komatsu 6D95L-1Z(S/N 26324-UP)

Maintenance schedule, common problems & OEM parts breakdown

Search live 6D95L-1Z(S/N 26324-UP) parts

The Komatsu 6D95L-1Z engine (S/N 26324-UP) is a 4.89-liter, inline-six diesel powerplant designed for mid-size construction machinery, primarily powering the FD35/40/45 series forklifts and select excavator or dozer variants from the late 1990s through the early 2000s. It delivers approximately 82 to 95 flywheel horsepower depending on the specific machine application and governor configuration, with a maximum torque of 28 to 32 kgm. The engine features a 95 mm bore and 115 mm stroke, utilizing a mechanical all-speed Bosch governor and either a PE5 in-line or VE distributor fuel pump. It is a non-turbocharged, naturally aspirated unit in its base configuration, weighing approximately 360 to 370 kg dry. This engine served as a workhorse for Komatsu's industrial and construction lines before being succeeded by Tier-compliant engines like the 6D105 and 6D114 series.

Across its production life, the 6D95L-1Z saw variations in fuel pump type (in-line vs. distributor) and electrical systems (24V 15A vs 25A alternator) depending on the host machine model (FD35Z, FD50E, etc.). The S/N 26324-UP range typically aligns with later production runs of the 6D95L-1 series, often featuring updated distributor-type pumps and refined cooling capacities compared to earlier S/N 10001-UP units. In the used and parts market, this engine remains highly relevant due to its simple, mechanical fuel system and robust cast-iron block, making it a preferred donor for rebuild in older FD-series forklifts and compact excavators. Its lack of complex emissions aftertreatment (pre-Tier 2/Stage II transition) ensures easier maintenance and lower diagnostic barriers compared to modern equivalents, sustaining demand for block assemblies, cylinder heads, and injection pumps.

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 6D95L-1Z(S/N 26324-UP) specifications

Engine

Model	6D95L-1
Gross Power	82–110 HP (61–82 kW) @ 2,000–2,250 rpm
Displacement	4.890 L (4,890 cm³)
Cylinders	6 in-line
Bore x Stroke	95 mm x 115 mm
Emissions Tier	Tier 1 / Stage II

Weights

Engine Dry Weight

345–425 kg (761–937 lb)

Dimensions

Overall Length	983–986 mm (38.7–38.8 in)
Overall Width	586–637 mm (23.1–25.1 in)
Overall Height	809–876 mm (31.9–34.5 in)

Performance

Maximum Torque	28–41.5 kgm (203–300 ft·lb) @ 1,500 rpm
High Idling Speed	2,200–2,500 rpm
Low Idling Speed	700 rpm
Minimum Fuel Consumption	160 g/HPh

Service capacities (summary)

Lubricating Oil Capacity	11–13 L (2.9–3.4 gal)
Coolant Capacity	7.5–18 L (2.0–4.8 gal)

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

Komatsu 6D95L-1Z(S/N 26324-UP) maintenance schedule

Service interval	Tasks
Every 10 h	Check engine oil level and condition. Check hydraulic fluid level via sight glass. Check coolant level and ensure cap is secure. Check fuel level and drain water from separator. Check air filter restriction indicator. Inspect hydraulic hoses for cracks or leaks.
Every 250 h	Change engine oil and filter. Grease all lubrication points (boom, stick, bucket, swing bearing). Check fluid levels across all systems. Inspect air filter outer element. Inspect belts and hoses for wear. Perform visual walk-around inspection.
Every 500 h	Replace fuel filter. Replace hydraulic return filter. Perform battery service and terminal check. Test coolant SCA (Supplemental Coolant Additive). Collect KOWA oil sample for analysis. Perform detailed undercarriage visual inspection.
Every 1,000 h	Collect hydraulic oil sample for analysis. Check and change final drive oil. Inspect turbocharger components. Perform wear measurements on critical components. Check valve adjustment status. Conduct structural inspection of boom and stick.
Every 2,000 h	Change hydraulic system oil. Flush and replace coolant. Service transmission and torque converter. Perform comprehensive component evaluation. Check KDPF status (if applicable). Inspect and replace worn belts and clamps.

Servicing the 6D95L-1Z(S/N 26324-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize KOWA (Komatsu Oil Wear Analysis) at every 500-hour interval to monitor engine wear metals (iron, copper, lead) and coolant contaminants. Check SCA concentration in the cooling system at 500 hours to prevent liner cavitation. Monitor hydraulic oil particle count and viscosity at 1,000 hours to detect pump wear early. Track fuel dilution and soot levels in engine oil samples to assess combustion efficiency and filter performance. Use KOMTRAX telematics data to correlate load frequency with fluid degradation rates for optimized change intervals.

Corrective & Common Repairs

Address hard-starting issues by inspecting the Bosch VE distributor pump or PE5 in-line pump for wear and checking the mechanical all-speed governor linkage. Replace worn injector nozzles if smoke color indicates incomplete combustion. Fix coolant leaks by reseating or replacing the water pump (7.3 kg) and inspecting cylinder head gaskets. Repair electrical faults by testing the 24V alternator (15A or 25A) and starter motor (4.5 kW) connections. Replace cracked hydraulic hoses during daily checks to prevent high-pressure failures.

Overhaul & Rebuild Points

Perform a full engine overhaul when compression drops below specification or oil consumption exceeds limits. Replace cylinder liners and pistons if bore wear exceeds tolerances. Recondition the crankshaft (35.5 kg) and camshaft (8.5 kg) if journal wear is detected. Replace all bearings (main and connecting rod) during disassembly. Reface the cylinder head (41 kg) and replace valve springs and guides. Reassemble with new gaskets, seals, and torque all fasteners to OEM specifications to ensure structural integrity.

Seasonal & Environment Servicing

In cold climates, check coolant freeze protection and use appropriate viscosity oil to ensure cold-start reliability. In dusty environments, inspect the air filter restriction indicator daily and clean or replace the outer element at 250-hour intervals to prevent abrasive wear. In high-temperature conditions, flush the radiator and oil cooler fins to remove debris and ensure proper heat exchange. Verify the integrity of the cooling system SCA levels to prevent overheating and liner pitting during extended summer operations.

6D95L-1Z(S/N 26324-UP) common service parts

Part number	Part	Notes
07281-00197	Clamp,(With Pre-Fuel Filter)	Fuel system service	Check fitment →
600-311-9200	Fuel Filter Ass'Y	Fuel system service	Check fitment →
09637-02161	Plate? Instruction,Air Cleaner (Double Element)	Air intake service	Check fitment →
09637-30161	Plate? Instruction,Air Cleaner (Single Element)	Air intake service	Check fitment →
09637-30262	Plate? Instruction,Air Cleaner (Double Element)	Air intake service	Check fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

6D95L-1Z(S/N 26324-UP) fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
CA115	Engine crankshaft speed sensor failure	Broken sensor, wiring issue, or connector corrosion	Replace the speed sensor and verify the voltage at the pin connector
CA111	Internal engine controller fault	ECM hardware failure	Replace or reprogram the ECM
CA441	Battery voltage too low	Weak battery or charging system issue	Replace the battery or alternator; check the voltage regulator
CA442	Battery voltage too high	Alternator overcharging or regulator failure	Replace the alternator or battery; check the voltage regulator
CA122	Intake air pressure high voltage	Sensor malfunction or actual overpressure condition	Verify the intake pressure sensor and wiring
CA123	Intake air pressure low voltage	Sensor short or airflow restriction	Check for a sensor short or an airflow restriction
CA451	Common rail pressure sensor feedback value too high	Malfunction in the rail sensor or actual overpressure condition	Diagnose the fuel rail pressure sensor or pump lines
CA452	Common rail pressure sensor feedback value too low	Sensor malfunction or low fuel pressure	Diagnose the fuel rail pressure sensor or pump lines
CA234	Engine overspeed	Throttle calibration error, engine load cycle issue, or operator misuse	Verify throttle calibration, engine load cycle, or operator misuse
AA10NX	Air cleaner clogging	Dirty or blocked air filter element	Replace the air filter

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

6D95L-1Z(S/N 26324-UP) attachments & work tools

Excavator Buckets

Standard and heavy-duty digging buckets are the primary work tools for this engine class, typically ranging from 0.3 to 0.6 cubic meters in capacity. These attachments mount via a standard hydraulic quick coupler system compatible with the machine's auxiliary hydraulic lines.

Grading and Dozer Blades

Moldboard and dozer blades are offered for earthmoving configurations, with blade widths varying by specific machine frame size. Factory guarding options include side cutters and edge guards to protect the blade structure during abrasive operations.

Hydraulic Breakers

Hydraulic hammers require a specific breaker kit with high-flow piping and a pilot control valve arrangement. Compatibility is limited by the machine's hydraulic pump flow rate and the structural mounting points on the boom.

Wheels and Rims

For wheeled variants, specific rim and tire combinations are designated to match the machine's load rating and ground clearance requirements. These are factory-specified to ensure proper balance and hydraulic line clearance during articulation.

All 6D95L-1Z(S/N 26324-UP) assemblies by section

Every catalogued assembly group for the Komatsu 6D95L-1Z(S/N 26324-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Cooling System

Komatsu : 6d95l-1z(S/N 26324-Up) : Cooling System : Corrosion Resistor And Piping

01***40	Bolt	2
01***65	Bolt,(With Water Separator)	2
01***85	Bolt	2
01***08	Nut,See Fig. K4010-04a0	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cooling System : Corrosion Resistor And Piping (High Altitude Spec.)

01***40	Bolt	2
01***60	Bolt	2
01***85	Bolt	2
01***08	Nut	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cooling System : Water Pump And Cooling Fan

01***16	Screw	5
01***20	Screw	2
01***30	Bolt,(Water Separator Spec.)	6
01***55	Bolt,(With Engine Stop Motor Type)	3

See all parts with full part numbers in Heavy Parts AI →

Cylinder Block

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Camshaft And Tappet

01***20	Screw	2
04***16	Fitting Wedge	1
62***10	Tappet	12
62***10	Tappet Rod	12

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Crankshaft

01***45	Bolt,Nylock	1
01***16	Bolt,(With Alternator Cover Type)	6
61***11	Bolt,Nylock (K2)	1
61***20	Collar,Taper	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Cylinder Block

01***12	Bolt	2
01***16	Screw	4
01***20	Bolt,(For Japan Pc200)	2
04***20	Pin,Dowel (Welded)	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Cylinder Block (Cold Terrain Spec.)

01***12	Bolt	2
01***16	Screw	4
01***25	Bolt,(With Corrosion Resistor)	4
04***20	Pin,Dowel (Welded)	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Flywheel And Flywheel Housing

01***30	Bolt	6
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	11
01***05	Screw	2
04***18	Bolt, Eye	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Front Cover And Gear

01***70	Bolt,(For 75a Alternator)	1
01***16	Bolt	2
01***20	Bolt,(With Tachometer Outlet)	6
01***16	Screw	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Oil Pan

01***16	Bolt, Mount Solenoid Valve	29
01***30	Bolt,(Water Separator Spec.)	1
01***16	Screw	29
01***30	Bolt,(Water Separator Spec.)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Oil Pan (Cold Terrain Spec.)

01***16	Bolt, Mount Solenoid Valve	27
01***30	Bolt,(Water Separator Spec.)	1
01***16	Screw	27
01***30	Bolt,(Water Separator Spec.)	3

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Oil Pan (High Altitude Spec.)

01***16	Bolt, Mount Solenoid Valve	28
01***30	Bolt,(Water Separator Spec.)	2
01***16	Screw	28
01***30	Bolt,(Water Separator Spec.)	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Block : Piston And Connecting Rod

04***12	Ring, Snap	12
62***21	Piston (S)	6
62***00	Piston Ring Ass'Y,Per Cylinder	6
62***01	Piston Ring Ass'Y,Per Cylinder	6

See all parts with full part numbers in Heavy Parts AI →

Cylinder Head

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Air Cleaner And Mounting

01***25	Grub Screw	2
01***06	Nut	6
04***10	Ring,See Fig. K4010-65a0	1
09***61	Plate? Instruction,Air Cleaner (Double Element)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Air Cleaner And Mounting (High Altitude Spec.)

01***25	Grub Screw	2
01***60	Bolt	1
01***06	Nut	6
04***10	Ring,See Fig. K4010-65a0	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Air Intake Manifold And Connection (High Altitude Spec.)(#26324-43529)

01***50	Bolt	1
01***30	Screw	10
01***70	Bolt	4
01***85	Bolt	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Air Intake Manifold And Connection (High Altitude Spec.)(#43530-)

01***14	Bolt,(W/Joy Stick Str.)(W/O Heater)	10
01***25	Bolt,(With Corrosion Resistor)	1
01***30	Screw	9
01***70	Bolt	4

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Air Intake Manifold And Connection(#26324-43529)

01***50	Bolt	1
01***30	Screw	10
01***60	Bolt	2
01***70	Bolt	4

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Air Intake Manifold And Connection(#43530-)

01***14	Bolt,(W/Joy Stick Str.)(W/O Heater)	10
01***25	Bolt,(With Corrosion Resistor)	1
01***30	Screw	9
01***60	Bolt	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Cylinder Head

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***32	Washer,(Not Used With Emergency Str.)	25
02***04	Plug, Pipe	1
07***08	Plug, Expansion	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Cylinder Head (High Altitude Spec.)

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***32	Washer,(Not Used With Emergency Str.)	25
02***04	Plug, Pipe	1
07***08	Plug, Expansion	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Cylinder Head Cover

61***10	Cap, Oil Filler	1
61***20	Screw	4
61***30	Washer,(B)	4
61***42	Packing,Cylinder Head Cover	4

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Cylinder Head Cover (High Altitude Spec.)

01***20	Bolt,(For Japan Pc200)	1
04***50	Screw	4
07***80	Clamp, Drain Hose	3
07***06	Hose	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Exhaust Manifold And Muffler

01***20	Bolt	2
01***25	Grub Screw	4
01***45	Stud	2
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Exhaust Manifold And Turbocharger (High Altitude Spec.)

01***25	Grub Screw	4
01***45	Bolt, Bracket Mounting	12
01***90	Bolt,(For Large Fan)	12
07***08	Plug,(For W/O. Corrosion Resistor)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Muffler And Mounting (High Altitude Spec.)

01***20	Bolt	2
01***35	Stud	2
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	2
01***12	Bolt,(See Fig.0501)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Rocker Arm

01***12	Bolt,(Without R.P.C.U.)	1
01***65	Bolt,(For Alternator Bracket Mount)	8
61***30	Nut	12
61***20	Spring,Conical	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Cylinder Head : Turbocharger (High Altitude Spec.)

62***10	Turbocharger Ass'Y	1
GA***16	Bolt	6
GA***64	Housing,Turbine	1
GA***35	Rotor Ass'Y,Center Housing	1

See all parts with full part numbers in Heavy Parts AI →

Electrical System

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Alternator (25a) (With Hardening Pulley)

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Alternator (25a) (With Non Hardening Pulley)

60***20	Alternator A. (25a),(With Non Hardening Pulley)	1
KD***57	Bearing,Ball? Front	1
KD***80	Collar	1
KD***30	Retainer	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Alternator (35a) (With Hardening Pulley)

60***40	Alternator A. (35a),(With Hardening Pulley)	1
KD***57	Bearing,Ball? Front	1
KD***80	Collar	1
KD***70	Rear Bracket Ass'Y,Rear	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Alternator (35a) (With Non Hardening Pulley)

60***10	Alternator A. (35a),(With Non Hardening Pulley)	1
KD***57	Bearing,Ball? Front	1
KD***80	Collar	1
KD***70	Rear Bracket Ass'Y,Rear	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Alternator (50a) (With Non Hardening Pulley)

60***90	Alternator A. (50a),(With Non Hardening Pulley)	1
SD***X0	Washer	1
SD***X0	Fan	1
SD***10	Nut	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Alternator And Mounting (25a? 35a? 50a)

01***30	Bolt,(For Trimming Dozer)	1
01***25	Bolt,(With Corrosion Resistor)	3
01***65	Bolt,(For 35a? 25a Alternator)	1
01***70	Bolt,(For 50a Alternator)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Heater Signal

60***30

Signal,Engine Pre Heater

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Starting Motor (5.5kw)

60***60	Starting Motor Ass'Y,(5.5kw)	1
KD***30	Bracket,Center	1
KD***40	Washer Ass'Y,(Not Shown)	1
KD***10	Field Coil Ass'Y	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Electrical System : Starting Motor And Mounting (5.5kw)

01***35	Screw	3
07***00	O-Ring,(F4350-65a1 -5 )	1
(6***0)	Starting Motor Ass'Y,(See Fig.0661a) (5.5kw)	1

See all parts with full part numbers in Heavy Parts AI →

Engine Kit

Komatsu : 6d95l-1z(S/N 26324-Up) : Engine Kit : Gasket Kit

01***12	Washer,Lock? Injection Gear	1
07***00	O-Ring,(F4350-65a1 -5 )	1
07***35	O-Ring,Hydraulic Oil Filter	1
07***40	O-Ring,Water Pump Mount	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Engine Kit : Gasket Kit (High Altitude Spec.)

01***12	Washer,Lock? Injection Gear	1
07***00	O-Ring,(F4350-65a1 -5 )	1
07***35	O-Ring,Hydraulic Oil Filter	1
07***40	O-Ring,Water Pump Mount	2

See all parts with full part numbers in Heavy Parts AI →

Fuel System

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Additional Fuel Filter

07***12	Gasket,Mechanical Pump Piping	1
60***00	Fuel Filter Ass'Y	1
60***20	Cartridge	1
61***31	Plug,(Not Shown)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Engine Stop Motor And Mounting

01***25	Screw	3
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	6
01***20	Bolt,(For Japan Pc200)	1
01***50	Bolt,(For Shipping)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Filter And Piping

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Feed Pump) (High Altitude Spec.)(#26324-87028)

62***10	Injection Pump Ass'Y,(High Altitude Spec.)	1
DK***20	Bolt, Joint	1
DK***00	Valve,Check	2
DK***20	Pump,Priming	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Feed Pump) (High Altitude Spec.)(#87029-)

DK***20	Bolt, Joint	1
DK***00	Valve,Check	2
DK***10	Feed Pump Ass'Y,(Not Shown)	1
DK***20	Pump,Priming	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Feed Pump)(#26324-93465)

62***60	Injection Pump Ass'Y,(See Fig.0451)	1
DK***20	Bolt, Joint	1
DK***00	Valve,Check	2
DK***20	Pump,Priming	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Feed Pump)(#93466-)

DK***20	Bolt, Joint	1
DK***00	Valve,Check	2
DK***10	Feed Pump Ass'Y,(Not Shown)	1
DK***20	Pump,Priming	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2) (High Altitude Spec.)(#26324-87028)

62***10	Injection Pump Ass'Y,(High Altitude Spec.)	1
DK***00	Adapter	1
DK***80	Nut	1
DK***00	Nut,Lock	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2) (High Altitude Spec.)(#87029-)

DK***00	Shim? 2.00mm,(High Altitude Spec.)	0
DK***00	Adapter	1
DK***80	Nut	1
DK***00	Nut,Lock	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#26324-93465)

62***60	Injection Pump Ass'Y,(See Fig.0451)	1
DK***00	Adapter	1
DK***80	Nut	1
DK***00	Nut,Lock	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Governor) (1/2)(#93466-)

DK***00	Shim? 2.00mm,(High Altitude Spec.)	0
DK***00	Adapter	1
DK***80	Nut	1
DK***00	Nut,Lock	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2) (High Altitude Spec.)(#26324-87028)

62***10	Injection Pump Ass'Y,(High Altitude Spec.)	1
DK***40	Gasket,Air Compressor	2
DK***00	Nut,Cap	1
DK***00	Bushing	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2) (High Altitude Spec.)(#87029-)

DK***40	Gasket,Air Compressor	2
DK***00	Nut,Cap	1
DK***00	Bushing	1
DK***40	Bolt	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#26324-93465)

62***60	Injection Pump Ass'Y,(See Fig.0451)	1
DK***40	Gasket,Air Compressor	2
DK***00	Nut,Cap	1
DK***00	Bushing	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Governor) (2/2)(#93466-)

DK***40	Gasket,Air Compressor	2
DK***00	Nut,Cap	1
DK***00	Bushing	1
DK***40	Bolt	2

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2) (High Altitude Spec.)(#26324-87028)

62***10	Injection Pump Ass'Y,(High Altitude Spec.)	1
62***11	Injection Pump Ass'Y	1
DK***30	Key,Woodruff	1
DK***30	Bearing	0

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2) (High Altitude Spec.)(#87029-)

62***11	Injection Pump Ass'Y	1
DK***30	Key,Woodruff	1
DK***30	Bearing	0
DK***20	Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm	0

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#26324-93465)

62***60	Injection Pump Ass'Y,(See Fig.0451)	1
62***61	Injection Pump Ass'Y	1
DK***30	Key,Woodruff	1
DK***30	Bearing	0

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Pump) (1/2)(#93466-)

62***61	Injection Pump Ass'Y	1
DK***30	Key,Woodruff	1
DK***30	Bearing	0
DK***20	Shim, 1.40mm; Was Dk029311-7220, Shim? 1.4mm	0

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2) (High Altitude Spec.)(#26324-87028)

62***10	Injection Pump Ass'Y,(High Altitude Spec.)	1
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

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2) (High Altitude Spec.)(#87029-)

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
DK***00	Spring	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#26324-93465)

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump (Pump) (2/2)(#93466-)

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
DK***20	Plunger Ass'Y	6

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Injection Pump And Piping

01***35	Stud	4
01***35	Grub Screw	4
01***25	Screw	4
01***12	Bolt,(See Fig.0501)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Fuel System : Fuel Nozzle And Spill Pipe

01***35	Bolt, Mount Bracket To Floor	6
07***10	Tube,(See Fig.0421-14)	5
07***10	Tube,Spill	1
62***10	Carrier	6

See all parts with full part numbers in Heavy Parts AI →

Lubricating Oil System

Komatsu : 6d95l-1z(S/N 26324-Up) : Lubricating Oil System : Lubricating Oil Filter

60***40	Cartridge,Engine Oil Filter (D31s)	1
60***41	Cartridge,Engine Oil Filter (D31s)	1
60***20	Plate? Caution,(Italian-English)	1
60***60	Plate? Caution,(Arabic-English)	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Lubricating Oil System : Lubricating Oil Pump And Suction Pipe

01***12	Bolt,(See Fig.0501)	1
01***16	Screw	6
01***25	Bolt,(With Corrosion Resistor)	1
62***10	Valve	1

See all parts with full part numbers in Heavy Parts AI →

Komatsu : 6d95l-1z(S/N 26324-Up) : Lubricating Oil System : Turbocharger Lubricating Oil Piping (High Altitude Spec.)

01***16	Screw	1
01***20	Screw	4
01***06	Nut	1
07***18	O-Ring,Turbocharger Lubricating Pipe	1

See all parts with full part numbers in Heavy Parts AI →

6D95L-1Z(S/N 26324-UP) serial number reference

The engine serial number plate is stamped on the engine block, typically on the left side near the injection pump or on a metal data plate affixed near the valve cover. The machine PIN plate is located on the right-hand side of the cab on the lower frame, just behind the front idler or beneath the operator's window; read the prefix from the 17-character ISO PIN on the emissions/export plate.

Prefix	Identifies	Notes
6D95L-1Z	Engine Model	Identifies the 6D95L-1Z engine family. Serial range 26324-UP is explicitly tied to this engine designation in factory parts catalog listings. No 3-character PIN prefixes are documented for this specific engine serial range in available sources; verify with your dealer for machine-level PIN data.

Frequently asked questions

What is the engine type and displacement?

It is a 4.89-liter (4,890 cm³), inline-six, naturally aspirated diesel engine with a 95 mm bore and 115 mm stroke.

What is the operating weight of the machine this engine powers?

Operating weight varies by configuration and host machine model (e.g., FD35/40/45 forklifts or excavators), typically ranging from mid-size class weights; specific machine weight must be verified via the serial number-specific spec sheet.

What engine replaced the 6D95L-1Z in later Komatsu models?

The 6D95L-1Z was succeeded by Tier-compliant engines such as the 6D105 and 6D114 series, which incorporated turbocharging and emissions control technology to meet Stage II/Tier 2 standards.

What 6D95L-1Z(S/N 26324-UP) owners discuss

What are the known powertrain and hydraulic behaviors for machines equipped with the 6D95L-1Z engine?

The engine is a 4-cycle, water-cooled, direct injection diesel unit. It typically delivers 74–81 kW (99–109 HP) at 2,000 RPM with an estimated torque of 400–450 N·m (295–332 lb·ft). The engine is designed for high torque output and fuel efficiency. Hydraulic systems in these machines are known for smooth operation but are sensitive to oil temperature; functions may become weak when hot due to internal leakage if viscosity drops too low. The engine and hydraulic pump are closely linked; pump failure often indicates imminent engine wear. The line is noted for being fuel-efficient compared to early-generation competitors, but resale value can suffer if hydraulic components fail before the engine does. Varies by configuration/series.

What undercarriage or wear patterns are typical for this machine type?

Undercarriage wear is a primary cost driver. Track tension must be monitored regularly; tracks that repeatedly loosen indicate issues with the tensioner or component wear. Pulling to one side during travel often stems from mechanical resistance in the undercarriage (mud packing, roller condition, track-chain wear) rather than hydraulic failure. Final drives are robust but require correct oil levels and contamination control to prevent noise and failure. The machine is designed to wear out complete systems simultaneously if maintenance is neglected, particularly in the final drive and swing system. Varies by configuration/series.

What are the engine quirks per the 6D95L-1Z series?

The 6D95L-1Z is an inline-6, 5.0L turbocharged diesel engine. A critical operational quirk is the need for a 2–3 minute idle period after heavy operation before shutdown to prevent turbocharger oil coking and extend component life. The engine is sensitive to airflow restrictions; loss of power under load often points to clogged air filters, fuel filters, or restricted charge-air hoses rather than internal engine failure. Overheating is common if the cooling package (radiator, hydraulic oil cooler, charge-air cooler) is packed with debris between the heat exchangers. The engine complies with Tier 2 / Stage II emission standards. Varies by configuration/series.

What are common electrical or sensor issues reported by owners?

Komatsu machines with this engine rely heavily on electronic control systems. Common issues include intermittent starting, dashboard failures, and random shutdowns triggered by faulty sensors or unstable power supplies. Multiple fault codes often point to battery state, chassis grounds, or connector integrity rather than individual component failure. A battery may show acceptable voltage until the starter is loaded; voltage collapse during starting requires a load test before replacing the starter. Hydraulic noise or cavitation can also be misdiagnosed as electrical issues if the oil level or suction side is compromised. Varies by configuration/series.

What should be checked when buying a used machine with the 6D95L-1Z engine (S/N 26324-UP)?

Verify the engine serial number prefix matches 26324-UP to ensure correct manual and parts compatibility. Check the cooling package for debris packed between the radiator, hydraulic oil cooler, and charge-air cooler. Test hydraulic performance cold and hot to identify internal leakage in pumps or valves. Inspect the undercarriage for track tension, roller condition, and final drive noise. Verify the battery and main starter cable integrity. Check for fault codes that may indicate sensor or electrical issues. Ensure the engine idles smoothly and does not lose power under load. Have your dealer verify the exact serial range specifications and installed attachment package before purchase.

What are the recommended fluid specifications for this engine?

Use Komatsu Genuine Diesel Engine Oil meeting Komatsu Engineering Standards. Use Komatsu Genuine Hydraulic Oil HO56 or equivalent ISO VG46. Use Komatsu Genuine Powertrain Oil TO10K or TO30K as specified. Use Super Coolant AF-NAC for the cooling system. Axle oil should be AXO80 or equivalent SAE 80WZF. Varies by configuration/series.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

Need a specific 6D95L-1Z(S/N 26324-UP) part?

Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.

Search parts in the app