Komatsuwheel loadermedium (wa140 - wa380)

Komatsu WB150PS-2(S/N 150F50001-Up)

Maintenance schedule, common problems & OEM parts breakdown

Search live WB150PS-2(S/N 150F50001-Up) parts

The Komatsu WB150PS-2 is a backhoe loader manufactured from 2004 to 2011 with an operating weight of 8.95 tons (19,731 lb). It features an all-wheel drive system and standard 14L-17.5-10 PR tires. The machine has a transport length of 7.31 meters (24.0 ft) and a bucket capacity of 0.18 cubic meters (0.24 cu yd). It offers a dredging depth of 5.59 meters (18.3 ft) and a maximum reach horizontal of 5.595 meters (18.4 ft). The WB150PS-2 succeeded earlier WB150 models and was followed by the WB150-3 series. Configurations included standard and AWS variants, with power ratings varying by regional emissions packages.

Across the WB150 series, Komatsu refined the power-shift transmission and hydraulic systems to improve cycle times and fuel efficiency. The PS-2 generation introduced more robust linkage geometry and improved operator visibility compared to the WB150-2. The machine remains significant in the used market due to its durable 4-cylinder diesel engine and reliable all-wheel drive chassis. Parts availability is supported by extensive aftermarket networks and continued demand for versatile utility machines in municipal and construction sectors.

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 WB150PS-2(S/N 150F50001-Up) specifications

Engine

Model	Komatsu SAA4D102E-2
Type	Vertical 4-cycle water-cooled diesel
Number of Cylinders	Four
Bore	102.0 mm (4.02 in)
Stroke	Not documented for this exact serial range — verify with your dealer
Rated Power	68 kW (91.2 hp) at 2500 rpm

Weights

Operating Weight

8.95 tons

Dimensions

Transport Length	7.31 m
Standard Tyres	14L-17.5-10 PR

Performance

Travel Speed	37.8 km/h
Bucket Capacity	0.18 m³
Dredging Depth	5.59 m
Max Reach Horizontal	5.595 m

Service capacities (summary)

Fuel	Not documented for this exact serial range — verify with your dealer
Hydraulic System	Not documented for this exact serial range — verify with your dealer
Engine Oil	Not documented for this exact serial range — verify with your dealer
Cooling System	Not documented for this exact serial range — verify with your dealer

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

Komatsu WB150PS-2(S/N 150F50001-Up) maintenance schedule

Service interval	Tasks
Every 10 h	Check engine oil level and condition. Check hydraulic fluid level at sight glass. Check coolant level and ensure cap is secure. Drain water from fuel separator. Check DEF level on Tier 4 machines. Inspect air filter restriction indicator. Check tire condition and inflation pressure. Inspect hydraulic hoses for cracks or leaks. Check pins, bushings, and attachment points. Clear debris from radiator and oil cooler fins. Check for fluid leaks under the machine. Verify ROPS/FOPS integrity and seat belt function. Test horn, backup alarm, and lights. Ensure emergency shutoff is accessible. Verify gauges and KOMTRAX display are normal after start. Test all controls for smooth response. Check service and parking brake function.
Every 250 h	Change engine oil and filter. Grease all points on boom, stick, bucket, and linkage. Check hydraulic fluid level. Check air filter outer element. Inspect belts, hoses, and clamps. Perform visual walk-around inspection.
Every 500 h	Replace fuel filter. Replace hydraulic return filter. Test battery and alternator load. Test coolant SCA concentration. Collect KOWA hydraulic oil sample. Perform detailed undercarriage wear measurement. Check front and rear axle oil levels. Check final drive oil levels.
Every 1,000 h	Change hydraulic oil. Change final drive oil on both sides. Inspect turbocharger. Measure wear on structural components. Check valve adjustment. Perform comprehensive structural inspection. Clean or replace air filter outer element. Change transmission oil and filter. Change axle oil.
Every 2,000 h	Flush and replace coolant. Perform comprehensive brake system inspection. Measure brake pad wear. Check articulation and steering pin play. Replace worn steering pins. Inspect dump body, hoist cylinder, and tailgate. Check suspension system wear. Torque ROPS bolts. Check cutting edge and end bit bolt torque.

Servicing the WB150PS-2(S/N 150F50001-Up) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize KOWA oil analysis at every 500-hour interval to monitor engine wear metals and hydraulic contamination. Check coolant SCA levels at 500 hours to prevent liner cavitation. Monitor hydraulic oil particle count and viscosity at 1,000 hours. Inspect transmission oil for gear wear indicators at 1,000 hours. Track DEF consumption rates for Tier 4 compliance. Analyze axle oil for gear tooth wear. Use KOMTRAX telematics to track load frequency and fault codes for proactive scheduling.

Corrective & Common Repairs

Address hydraulic hose leaks at attachment points and boom cylinders. Replace fuel injection pump seals if black smoke or hard starting occurs. Repair wet disc brake wear by replacing pads at 2,000-hour inspections. Fix steering cylinder leaks common in articulation joints. Replace air filter elements when restriction indicators trigger. Repair radiator fin blockage from debris. Fix hydraulic return filter bypass valves if pressure drops occur. Replace worn pins and bushings in the Z-bar linkage.

Overhaul & Rebuild Points

Rebuild the engine at 10,000 hours or when compression drops below spec. Overhaul hydraulic pumps if flow rates fall below 90% of nominal. Rebuild the power-shift transmission if clutch slippage persists after adjustment. Replace final drive planetary gears if oil analysis shows high gear wear. Rebuild the turbocharger if shaft play exceeds limits. Overhaul the steering axle if differential oil shows excessive wear. Rebuild the boom and stick cylinders if seal leaks are internal.

Seasonal & Environment Servicing

Switch to lower viscosity engine oil for cold starts below -10°C (14°F). Use winter-grade hydraulic fluid to prevent pump cavitation. Check battery electrolyte levels and charge state in cold weather. Inspect coolant freeze point before winter. Clean radiator and oil cooler fins more frequently in dusty environments. Check tire pressure weekly in cold weather as it drops. Use high-temperature grease in hot climates for linkage points. Inspect air intake system for moisture ingress in humid conditions.

WB150PS-2(S/N 150F50001-Up) common service parts

Part number	Part	Notes
312613070	Oil Filter Fastener	Lubrication service	Check fitment →
YM119593-03100	Filter Breather	Scheduled service item	Check fitment →
312607632	Filter Support	Scheduled service item	Check fitment →
312649057	Filter	Scheduled service item	Check fitment →
312649058	Filter Support	Scheduled service item	Check fitment →

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WB150PS-2(S/N 150F50001-Up) fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
AA10NX	Air cleaner clogging	Dirty or blocked air filter element; intake restriction	Inspect and replace the air filter element; check intake ducting for obstructions
AB00KE	Charging voltage low / battery charge voltage low	Weak battery, loose connections, or failing alternator	Check battery terminals for corrosion and tightness; test alternator output and belt tension
B@BCNS	Engine coolant overheating	Low coolant level, clogged radiator fins, or faulty fan belt	Check coolant level and condition; clean radiator fins; inspect fan belt for wear or slippage
B@HANS	Hydraulic oil overheating	Low hydraulic oil level, clogged hydraulic cooler, or excessive system load	Check hydraulic oil level; clean the hydraulic oil cooler fins; verify relief valve settings
CA115	Engine crankshaft speed sensor and backup speed sensor failure	Faulty speed sensor, damaged wiring harness, or corroded connector	Inspect the crankshaft speed sensor and wiring for damage; verify voltage at the pin connector
CA122	Intake air pressure sensor feedback voltage too high	Faulty intake pressure sensor, short in wiring harness, or sensor drift	Test the intake air pressure sensor and wiring for shorts; replace sensor if out of specification
CA123	Intake air pressure sensor feedback voltage too low	Sensor short to ground, disconnected harness, or airflow restriction	Check for sensor short circuits and connector integrity; inspect for airflow restrictions
CA441	Battery voltage too low	Discharged battery, poor connections, or charging system failure	Charge or replace the battery; inspect charging system and ground connections
CA442	Battery voltage too high	Faulty voltage regulator or alternator overcharging	Test alternator output; replace the voltage regulator or alternator if defective
DGH2KB	Hydraulic oil temperature sensor short circuit	Shorted temperature sensor or damaged wiring harness	Inspect the hydraulic oil temperature sensor and wiring; replace the sensor if faulty

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

WB150PS-2(S/N 150F50001-Up) attachments & work tools

Standard Work Tools

The Komatsu WB150PS-2 is a backhoe loader, not a wheel loader. Factory specifications for the WB150PS-2 (S/N 150F50001-Up) list a standard front bucket capacity of 0.18 cubic meters. The machine has a transport length of 7.31 meters and an operating weight of 8.95 tons.

Coupler/Mounting Systems

The WB150PS-2 utilizes a fixed-frame front linkage system typical of backhoe loaders. It does not use a quick-attach coupler system for the standard bucket; the bucket is bolted to the lift arms. The source text does not list specific aftermarket coupler options for this backhoe model.

Hydraulic Kit/Arrangement Notes

The WB150PS-2 is equipped with a standard hydraulic system for backhoe and loader functions. The source text does not specify additional hydraulic kits required for the standard bucket, as it is a fixed attachment. Fluid recommendations include Komatsu HO hydraulic oil and Komatsu AXO axle oil.

Notable Factory Configurations/Guarding

The WB150PS-2 (S/N 150F50001-Up) is manufactured from 2004 to 2011. It features an all-wheel drive system and standard tires sized 14L-17.5-10 PR. The machine has a maximum dumping height and digging height specified in its performance data, with lift capacity figures complying with SAE J31 standards.

All WB150PS-2(S/N 150F50001-Up) assemblies by section

Every catalogued assembly group for the Komatsu WB150PS-2(S/N 150F50001-Up). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Control System

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Backhoe Control Levers

31***04	Spacer	8
31***12	Connection L.H	1
31***13	Connection R.H	1
31***60	Control Valve Support	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Backhoe Control Levers - Komatsu Layout Control (1/2)

31***04	Spacer	4
31***13	Connection R.H	1
31***13	Lever	1
31***23	Tie Rod	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Backhoe Control Levers - Komatsu Layout Control (2/2)

31***04	Spacer	4
31***12	Connection L.H	1
31***13	Lever	1
31***23	Tie Rod	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Backhoe Control Pedal (Left Side)

31***62	Bushing, Pedal	1
31***63	Pedal Support	1
31***21	Pedal	1
80***09	Screw	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Backhoe Control Pedal (Left Side) Komatsu Layout Control

31***62	Bushing, Pedal	1
31***63	Pedal Support	1
31***21	Pedal	1
80***09	Screw	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Backhoe Control Pedal (Right Side)

31***61	Bushing, Pedal	1
31***63	Pedal Support	1
31***20	Pedal	1
80***09	Screw	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Backhoe Control Pedal (Right Side) - Komatsu Layout Control

31***61	Bushing, Pedal	1
31***20	Pedal	1
31***56	Pedal Support	1
80***09	Screw	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Braking Control Pedal

31***72	Brake Pedal L.H	1
31***73	Brake Pedal R.H	1
31***74	Pin Drag Pedals	1
31***02	Pin	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Fuel Control Lever

31***48	Command Boot	1
31***67	Lever Block	1
31***81	Assembly, Cable	1
31***21	Accelerator Lever	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Fuel Control Pedal

31***81	Support	1
31***58	Lever For Cable	1
31***70	Accelerator Pedal	1
31***71	Flask Pedal	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Outrigger Control Lever

31***48	Command Boot	2
31***57	Clamping Plate, R.H	1
31***58	Clamping Plate, L.H	1
31***51	Lever, R.H	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Shovel Control Lever

31***04	Spacer	4
31***58	Pressure -Boot	1
31***66	Knob	1
31***54	Block	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Control System : Shovel Control Lever (Bucket 4 In 1)

31***04	Spacer	4
31***58	Pressure -Boot	1
31***66	Knob	1
31***54	Block	1

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Engine

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Camshaft & Driving Gear

YM***50	Bearing, Thrust	1
YM***00	Gear,Injection Pump Drive	1
YM***00	Gear	1
YM***00	Gear Ass'Y	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Cooling Water System

YM***10	Protector	1
YM***02	Screw	4
YM***50	Pulley	1
YM***70	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Crankshaft & Piston

YM***00	Connecting Rod, Assembly	4
YM***00	Assembly, Piston (+0.25 mm)	4
YM***80	Gear, Ring	1
YM***10	Bush,Idle Gear (Repair Part)	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Cylinder Bolck

YM***00	Screw	18
YM***20	Bolt	10
YM***40	Spring	2
YM***60	Cylinder Block, Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Cylinder Head

87***41	Turbo Engine, Assembly	1
YM***70	Cap Valve	8
YM***02	Bolt	1
YM***51	Cap, Lub. Oil Supply	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Engine Stop Device

YM***00	Pin, Cotter	2
YM***02	Nut	1
YM***40	Lever	1
YM***62	Bolt,(For Shipping)	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Exaust Manifold & Silencer

YM***80	Packing	1
YM***02	Screw	2
YM***02	Screw	2
YM***02	Nut	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Feed Pump

YM***40	Gasket	4
YM***60	O-Ring	2
YM***00	Screw	1
YM***00	Spring	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Flywheel Housing & Oil Sump

YM***02	Screw	26
YM***20	Oil Sump	1
YM***80	Parallel Pin	2
YM***52	Screw	10

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Fuel Injection Pump (1/2)

YM***11	Pump, Assembly	1
YM***30	Shim, 0.400 mm	1
YM***50	Shim, 1.250 mm	1
YM***30	Shim, 1.050 mm	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Fuel Injection Pump (2/2)

YM***00	Segment	4
YM***40	Gasket	2
YM***00	Seat	4
YM***00	Screw	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Fuel Injection Valve

YM***20	Pipe	1
YM***40	Injection Pipe N. 4	1
YM***02	Bolt Plated	1
YM***20	Spring	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Fuel Line (1/2)

YM***10	Banjo Fitting	1
YM***80	Screw	1
YM***11	Clamp	2
YM***50	Pipe, Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Fuel Line (2/2)

YM***02	Screw	1
YM***22	Center Bolt	1
YM***00	Banjo Bolt	2
YM***02	Case Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Gasket Kit

YM***80	Packing	1
YM***00	O-Ring (Kit)	1
YM***40	O-Ring,Drain Plug	1
YM***01	Gasket (Kit)	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Gear Housing

YM***02	Bolt Plated	11
YM***51	Cap, Lub. Oil Supply	1
YM***02	Screw	6
YM***02	Screw	5

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Generator

YM***20	Timer,Solenoid	1
YM***40	Distance Piece	1
YM***40	Screw	1
YM***30	Adjuster, Belt	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Generator 80a

YM***10	Pulley	1
YM***60	Spool & Housing	1
YM***20	Bolt Kit	1
YM***10	Bearing,Ball	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Governor (1/2)

YM***40	Screw	1
YM***00	Screw	1
YM***20	Support	1
YM***20	Capsule	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Governor (2/2)

YM***00	Gasket	1
YM***40	Screw	4
YM***20	Lever	1
YM***40	Ring, Snap	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Lubricatin Oil Line

YM***60	Pipe	1
YM***81	Retainer	1
YM***50	Oil Pressure Transmitter	1
YM***00	Retainer	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Lubricating Oil System

YM***00	O-Ring (Kit)	1
YM***30	Shim, 1.000 mm	1
YM***00	Plug	1
YM***52	Screw	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Starting Motor

YM***30	Dust Cover Set	1
YM***71	Brush Holder Ass'Y	1
YM***10	Terminal Cover	1
YM***21	. Coil Assembly, Field	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Suction Manifold

YM***00	Heather Air	1
YM***02	Screw	1
YM***50	Joint	1
YM***02	Screw	9

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine : Turbocharger

YM***02	Nut	4
YM***90	Packing	1
YM***10	Turbine	1
YM***00	Spring Washer	4

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Engine Related Parts And Electrical System

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Air Filter

31***17	Hose (Turbo Engine)	1
31***32	Filter Support	1
31***82	Hose, Suction Air	1
80***87	Bolt	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Artic Version

88***28	Battery	1
YM***66	Connection	1
YM***65	30? C Heather Air	1
YM***64	Relay, Pre-Heating Timer	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Battery Detachment

31***88	Terminal (+), Assembly	1
31***10	Switch Support	1
80***66	Bolt	2
80***87	Bolt	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Electrical System (1/6)

31***07	Cover	1
31***57	Support	1
31***15	Wiring Harness, Assembly	1
80***08	Bolt (Only With Cabin)	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Electrical System (2/6)

31***67	Gearbox Wiring Harness, Assembly	1
31***68	Wiring, Electro-Valve Line	1
31***10	Wiring Harness, Assembly	1
31***12	Wiring Harness, Front	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Electrical System (3/6)

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Electrical System (4/6)

31***71	Indicator Support	2
31***00	Acustic Alarm	1
31***00	Acustic Alarm Support	1
80***29	Bolt	8

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Electrical System (5/6)

80***44	Bolt	1
80***47	Bolt	1
80***43	Screw	2
80***05	Nut	6

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Electrical System (6/6)

31***69	Wiring, Transmission Line	1
80***39	Screw	2
80***01	Self-Locking Screw	1
80***08	Nut (With Stabilizers Only)	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Engine And Drive Connection

20***08	Union	1
31***84	Level Pipe	1
31***85	Dip Oil Stick	1
31***34	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Engine Mounting Part

31***62	Right Support	1
31***63	Left Support	1
31***89	Motor Support	2
39***87	Washer	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Front Dashboard (1/2)

31***12	Lower Cover	1
31***13	Upper Cover	1
31***45	Upper Cover	1
31***46	Lower Cover	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Front Dashboard (2/2)

31***86	Front Dashboard, Assembly	1
31***00	Front Instrument Board	1
80***31	Self-Tapping Screw	4
80***38	Screw	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Fuel Piping

80***88	Bolt (With Stabilizers Only)	2
80***08	Bolt (Only With Cabin)	4
80***01	Spring Washer (With Stabilizers Only)	2
80***02	Spring Washer	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Fuel Tank

31***92	Splash Guard	1
31***55	Level Indicator	1
31***59	Gas Oil Tank	1
31***67	Cover Battery Deck	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Fuses Box

31***18	Box, Assembly	1
80***96	Bolt	2
80***33	Screw	5
80***05	Nut	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Lateral Dashboard (1/2)

31***13	Lateral Dashboard, Assembly (For Cabin)	1
31***01	Lateral Instrument Board	1
80***31	Self-Tapping Screw	4
88***70	Block And Wrench	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Lateral Dashboard (2/2)

31***54	Switch	1
31***56	Switch	1
85***72	Bulb	1
88***04	Glass, Wiper	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Muffler

30***55	Clamp (Aspirated Engine)	3
31***53	Hose	1
31***55	Stub Pipe	1
31***75	Protection Side Outward	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Prefilter (Optional)

31***19	Gasket	1
31***43	Hood	1
31***36	Gasket	1
31***51	Extension	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Radiator

31***91	Radiator Support	2
31***92	Protection	1
31***01	Complete Radiator	1
31***90	Protection	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Radiator Tank

31***69	Chamber	1
31***94	Upper Support	1
31***83	Hose	1
31***84	Hose	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Engine Related Parts And Electrical System : Self Supply Pump (Optional)

30***41	Pipe	1
31***90	Closure	1
31***49	Pin	1
31***50	Pump Support	1

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Frame

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Axle Lubricating Piping

39***45	Tube	1
50***15	Union	1
50***52	Union	1
85***11	O-Ring (For Homologation Road)	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Frame

31***55	Frame Horizontal Outrigger	1
31***01	Plate	2
31***06	Plate Fixing	1
31***55	Squab Panel	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Front Axle (4wd) (1/6)

20***28	Front Axle, Assembly	1
CA***10	Bushing	1
CA***35	Bush	4
CA***30	Spring Washer	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Front Axle (4wd) (2/6)

CA***10	Greaser Nipple	2
CA***95	Jack	1
CA***11	Fitting	2
CA***21	Swivel Housing, L.H	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Front Axle (4wd) (3/6)

CA***70	Shim, 3.000 mm	0
CA***68	Shim, 2.800 mm	0
CA***50	Bearing	2
CA***62	Flange	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Front Axle (4wd) (4/6)

CA***09	Bearing	2
CA***78	Locking Plate	2
CA***61	Differential Kit	1
CA***30	Trusth Washer	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Front Axle (4wd) (5/6)

CA***60	Fork	1
CA***61	Double Joint	2
CA***25	Spider	2
CA***39	Fork	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Front Axle (4wd) (6/6)

CA***90	Centering Bush	16
CA***70	Bearing	4
CA***40	Pin	4
CA***43	Pinion	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Front Propeller Shaft And Front Axle Fixing

31***55	Shaft	1
31***67	Protection	1
31***00	Front Support	1
31***01	Rear Support	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Handbrake And Rear Propeller Shaft

31***54	Shaft	1
31***75	Assembly, Cable	1
31***32	Fasterner Cable	2
80***09	Screw	8

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Hydraulic Piping (Brake Line)

31***01	Union	2
31***52	Tubo	1
31***53	Tube	1
31***54	Tube	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Hydraulic Piping (Rear Axle Locking Control)

39***13	Hose L=1150	1
39***22	Hose L=800	1
39***51	Hose	1
50***44	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Hydraulic Piping (Transmission Cooling Line)

39***03	Hose	1
39***04	Hose	1
50***87	Union	1
50***81	Elbow	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Rear Axle (1/7)

20***27	Rear Axle, Assembly	1
CA***11	Oil Seal	2
CA***66	Bolt	22
CA***32	Protection Cover	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Rear Axle (2/7)

CA***91	Shim 3.00 mm	0
CA***93	Shim 3.20 mm	0
CA***51	Bearing	2
CA***94	Shim 3.30 mm	0

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Rear Axle (3/7)

CA***77	Ring	1
CA***67	Bearing	2
CA***69	Pin	2
CA***45	Ring Nut	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Rear Axle (4/7)

CA***41	Shaft	1
CA***21	O-Ring	2
CA***20	Plug	1
CA***40	Bush	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Rear Axle (5/7)

CA***58	O-Ring	2
CA***33	Reaction Plate	2
CA***87	Flange	2
CA***39	Reaction Plate	6

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Rear Axle (6/7)

CA***63	Brakes Shaft	2
CA***61	Bush	2
CA***52	Spring	2
CA***81	Spring, L.H	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Rear Axle (7/7)

CA***90	Centering Bush	16
CA***77	Snap Ring	2
CA***99	Coupling Bushing	2
CA***70	Bearing	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (1/13)

20***65	Drive Shaft, Assembly	1
CA***22	Plug	3
CA***60	Copper Washer	3
CA***68	Breather Plug	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (10/13)

CA***75	Bolt	2
CA***84	Split Pin	2
CA***37	Spring	1
CA***28	Needele Bearing	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (11/13)

CA***71	Flange	1
CA***69	Flywheel Towing Plate	1
CA***50	Spring Washer	6
CA***42	Bolt	6

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (12/13)

CA***54	Harness System	1
CA***63	Electrovalve	2
CA***52	Distributor	1
CA***45	Gasket	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (13/13)

CA***87	Sensor Gasket	1
CA***81	Washer	2
CA***87	Copper Washer	6
CA***95	Connection	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (2/13)

CA***86	Thrust Washer	2
CA***92	Gear	1
CA***24	Clutch Drive Plate	14
CA***96	Spring	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (3/13)

CA***29	Bearing	1
CA***58	Gear	1
CA***87	Flange	1
CA***20	Plug	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (4/13)

CA***86	Thrust Washer	1
CA***90	Snap Ring	1
CA***20	Shim 0,1 mm	0
CA***09	Bearing	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (5/13)

CA***22	Seal Ring	2
CA***58	Oil Plug	1
CA***96	Spring	1
CA***26	Seal Ring	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (6/13)

CA***22	Seal Ring	3
CA***89	Phonic Wheel	1
CA***20	Shim 0,1 mm	0
CA***09	Bearing	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (7/13)

CA***17	Belleville Washer	1
CA***47	Lock-Spring Cover	1
CA***90	Bearing	1
CA***79	Spacer	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (8/13)

CA***99	Belleville Washer	6
CA***31	O-Ring	1
CA***09	Bearing	1
CA***42	Pin	3

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Transmission (9/13)

CA***95	Spacer	1
CA***13	Clutch Drive Plate	10
CA***90	Bearing	1
CA***75	Thrust Washer	1

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Wheels

31***60	Rear Rim	2
31***61	Front Rim	2
81***25	Tyre (14x17,5 10pr)	2
81***26	Tyre (19,5 L24-10pr)	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Frame : Wheels (Optional)

31***50	Front Rim	2
81***06	Tyre, Front (12.5/80-18 10pr)	2
84***01	Tyre (365/70 R18 Tl Spt9)	2

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Guard And Operator'S Cab

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Additional Kit For Air Blending System

31***15	Support	4
31***16	Condenser Support	1
31***29	Gasket	1
31***30	Gasket	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (9/11)

80***30	Boltw	1
80***32	Self Taping Screw	8
80***56	Self Taping Screw	2
80***05	Self-Locking Nut	1

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (1/11)

31***73	Operator'S Cab, Assembly	1
31***00	Cabin Structure	1
31***80	Glass Window, Lower	1
31***81	Glass Window, Upper	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (10/11)

80***67	Bolt (Optional)	4
80***56	Bolt	4
80***60	Screw	2
80***50	Cover (2nd Version)	4

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (11/11)

80***25	Screw	4
80***60	Screw	8
80***06	Washer, Spring	4
80***00	Washer (For Homologation Road)	12

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (2/11)

80***86	Washer	4
80***00	Screw (Only For Germany)	4
80***56	Screw	2
80***08	Self-Locking Nut	4

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (3/11)

80***70	Bolt	4
80***45	Screw	2
80***08	Nut (With Stabilizers Only)	4
80***51	Nut Cover	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (4/11)

31***41	Cylinder	3
31***42	Spring	6
31***43	Pin	6
31***44	Bellows	3

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (5/11)

80***48	Bolt	4
80***64	Screw	5
80***66	Self Taping Screw	2
80***06	Self-Lockig Nut	5

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (6/11)

31***42	Tie-Rod R.H. (2nd Version)	1
31***43	Tie-Rod L.H. (2nd Version)	1
31***44	Spring R.H. (2nd Version)	1
31***45	Spring L.H. (2nd Version)	1

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (7/11)

80***64	Screw	2
80***40	Self-Tapping Screw	2
80***06	Spring Washer	2
80***00	Washer (For Homologation Road)	2

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin (8/11)

31***03	Canopy	1
31***50	Gasket	7
31***94	Front Gasket	1
31***95	Central Gasket	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin Air Blending System (1/2)

31***03	Cock Support	1
31***72	Battery	1
31***74	Valve	1
31***75	Resistor	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Cabin Air Blending System (2/2)

31***80	Wall	1
31***84	Switch Wiring	1
31***02	Hose	1
80***14	Hose-Clamp	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Covers (1/3)

31***54	Hinge Linkage	1
31***84	Inspection Plug	1
31***13	Hood (Cabin)	1
31***96	Hood Crooked	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Covers (2/3)

31***00	Front Closure	1
31***26	Support	1
31***32	Squab Panel	1
31***03	Ballast 310 Kg	1

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Covers (3/3)

31***01	Right Splash-Board (Cabin)	1
31***02	Left Splash-Board (Cabin)	1
31***20	Right Closure (Cabin)	1
31***21	Left Closure (Cabin)	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Dashboard, Floor Mat

31***67	Floor Board	1
31***90	Lateral Dashboard	1
31***05	Front Dashboard	1
31***15	Plug	1

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Front Splash-Board (Optional)

31***55	R.H. Splash-Board Support	1
31***56	L.H. Splash-Board Support	1
31***19	R.H. Splash-Board	1
31***20	L.H. Splash-Board	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Heating System (1/2)

31***80	Wall	1
31***03	Cock Support	1
80***45	Screw	4
80***02	Spring Washer	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Heating System (2/2)

31***68	Control Cable	1
31***19	Hose Protection	1
31***02	Adhesive Plate	1
39***34	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Motor Air Blending System (1/2)

31***97	Fan Protection	1
31***54	Condenser	1
31***55	Upper Support	1
31***56	Lower Support	1

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Motor Air Blending System (2/2)

31***09	Gasket	1
31***51	Compressor	1
31***57	Filter	1
31***58	Filter Support	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Operator'S Seat

81***79	Back Foam	1
81***81	Seat Foam	1
81***86	Damper Assembly Kit	1
81***88	Weight Adjuster Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Guard And Operator'S Cab : Operator'S Seat Support

31***64	Box	1
31***66	Box	1
31***89	Operator'S Seat, Assembly	1
31***14	Operator'S Seat Stand	1

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Hydraulic System Work Equipment

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Adjustable Guide

31***07	Pin	1
31***50	Support	1
31***51	Stud Bolt Steering	1
36***67	Steering Wheel, Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (1/8)

84***41	Control Valve,Assembly	1
84***71	Block, Outrigger Control Assembly	2
84***75	Tie Rods Kit	1
84***94	Outlet Section, Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (2/8)

84***13	Gasket Kit	1
84***76	Inlet Housing	1
84***77	Pressure Relief Valve	1
84***78	Regolatore Di Flusso	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (3/8)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (4/8)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (5/8)

84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1
84***19	Gasket Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (6/8)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (7/8)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (8 Sections) (Hammer + Jig Arm)

84***47	Control Valve,Assembly	1
84***71	Block, Outrigger Control Assembly	2
84***81	Block, Jig Arm Control, Assembly	1
84***83	Block, Hammer Control Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (8/8)

84***11	Big Plug	1
84***16	Outlet Housing	1
(8***4)	Outlet Element Assembly	1
(8***1)	Control Valve, Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (Hammer)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (Jig Arm)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Bucket Hydraulic Piping (Fast Coupling Line) (Optional)

20***51	Coupling, Assembly. (For Hand Hammer)	1
20***52	Fitting (For Hand Hammer)	1
20***53	Body (For Hand Hammer)	1
20***62	Plug (For Hand Hammer)	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Bucket Hydraulic Piping (Mechanical Fast Coupling Line 4 In 1) (Option

20***51	Coupling, Assembly. (For Hand Hammer)	2
20***52	Fitting (For Hand Hammer)	1
20***53	Body (For Hand Hammer)	1
20***62	Plug (For Hand Hammer)	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Control Valve (7 Section) (For Jig Arm)

84***42	Control Valve,Assembly	1
84***71	Block, Outrigger Control Assembly	2
84***81	Block, Jig Arm Control, Assembly	1
84***82	Tie Rods Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Control Valve (7 Sections) (For Hammer)

84***48	Control Valve, Assembly	1
84***71	Block, Outrigger Control Assembly	2
84***82	Tie Rods Kit	1
84***83	Block, Hammer Control Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Floor Board Hydraulic Tank

31***19	Splash Guard	1
31***76	Hinge	1
31***61	Floor Board	1
80***08	Bolt (Only With Cabin)	3

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hammer Hydraulic Piping With Jig Arm (1/2)

31***21	Bushing	2
39***02	Hose	1
39***02	Hose	1
85***18	O.Ring	3

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hammer Hydraulic Piping With Jig Arm (2/2)

31***50	Pipe	1
31***51	Pipe	1
31***05	U-Bolt	6
39***07	Hose	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Horizontal Outrigger Cylinder L.H.

39***01	Brake Pin	1
39***08	Jack Assembly, L.H	1
39***14	Cylinder	1
39***13	Rod	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Horizontal Outrigger Cylinder R.H.

39***01	Brake Pin	1
39***07	Jack Assembly, R.H	1
39***13	Cylinder	1
39***13	Rod	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Arm Cylinder Line)

31***17	Pin	1
31***21	Bushing	2
39***67	Pin	1
39***06	Hose	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Arm Cylinder Line) (Safety Valve)

31***65	Pipe	1
31***71	Union	1
31***72	Pipe	1
31***02	Valve Support	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Boom Cylinder Line)

31***11	Pin	1
31***41	Buckle	2
31***42	Plate	1
33***53	V-Belt	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Boom Cylinder Line) (Safety Valve)

31***60	Pipe	1
31***61	Pipe	1
31***62	Pipe, R.H	1
31***63	Pipe, L.H	1

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Boom Swing Cylinder Line)

31***00	Support	2
31***08	Semibuckle	4
39***62	Pin	2
39***03	Hose	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Bucket - 4 In 1 Cylinder Line) (1/2)

31***26	Protection	2
31***52	Pipe, R.H	1
31***53	Pipe, L.H	1
31***00	U-Bolt	6

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Bucket - 4 In 1 Cylinder Line) (2/2)

31***78	Pin	2
31***79	Pin	2
31***52	Bucket 4 In 1, Assembly	1
39***44	Hose For Bucket L=1900 mm	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Bucket Cylinder Line) (1/2)

31***21	Bushing	2
39***06	Hose	2
50***13	Union	2
85***18	O.Ring	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Bucket Cylinder Line) (2/2)

31***58	Plate	1
31***05	Hose-Clamp	1
31***65	Pipe	1
31***40	Clamp	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Bucket Cylinder Line) (For Jig Arm)

31***55	Pipe, R.H	1
31***56	Pipe, L.H	1
31***57	Pipe	1
31***58	Pipe	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Delivery Line)

30***32	Mini-Intake	1
31***71	Pipe	1
39***13	Hose	1
39***14	Hose	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (1/3)

39***09	Hose	1
39***06	Hose	1
50***06	Plug	1
50***13	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (2/3)

31***54	Extension	1
31***21	Bushing	2
39***08	Hose	1
39***10	Hose	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (3/3)

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Jig Arm Cylinder Line)

31***21	Bushing	2
39***08	Hose	1
39***02	Hose	2
58***11	Union	2

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

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Oil Cooler And Return Line) (1/2)

31***70	Support	1
31***73	Pipe	1
31***14	Union	1
39***01	Hose	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Oil Cooler And Return Line) (2/2)

31***17	Union	1
31***21	Protection	1
31***29	Hose Protection	1
31***46	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Outrigger Cylinder Line)

20***70	Buckle	2
31***29	Hose Protection	2
31***93	Pipe L.H	1
31***94	Pipe R.H	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Outrigger Cylinder Line) (Safety Valves)

30***31	Union	4
30***74	Union	2
31***73	Pipe	1
31***74	Pipe	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Ride Control) (1/2) (Optional)

31***00	Union	1
31***01	Support	1
31***02	Support	1
39***47	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Ride Control) (2/2) (Optional)

39***47	Union	1
39***19	Hose	1
39***25	Hose	1
39***36	Hose	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Ride Control) (With Hammer) (2/2) (Optional)

39***19	Hose	1
39***25	Hose	1
39***36	Hose	1
50***14	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Lifting Cylinder Line) (1/2)

31***57	Pipe	1
31***58	Pipe	1
31***63	Support	1
31***07	Plate Fixing Tube	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Lifting Cylinder Line) (2/2)

20***70	Buckle	2
31***65	Pin ? 50	2
31***13	Pin ? 45	2
31***56	Pipe	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Lifting Cylinder) (Electric Safety Valve)

20***70	Buckle	4
31***00	Fastener	2
31***01	Plate	2
31***68	Pipe	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Lifting Cylinder) (Safety Valve)

31***50	Valve Support	2
31***57	Lifting Pipe, R.H	1
31***58	Lifting Pipe, L.H	1
31***59	Lifting Pipe	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Tipping Cylinder Line) (1/2)

31***59	Pipe	1
31***60	Pipe	1
31***64	Buckle	2
36***11	Protection	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Tipping Cylinder Line) (2/2)

31***05	Hose-Clamp	1
31***07	Gasket	1
31***65	Pin ? 50	2
31***13	Pin ? 45	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Tipping Cylinder) (Electric Safety Valve)

31***00	Fastener	2
31***01	Plate	2
31***75	Pipe	2
31***76	Pipe	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Tipping Cylinder) (Safety Valve)

31***50	Valve Support	2
31***61	Tipping Pipe, R.H	1
31***62	Tipping Pipe, L.H	1
31***63	Tipping Pipe	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Steering Line) (1/2)

30***32	Mini-Intake	1
30***38	Retainer	2
31***50	Stud Bolt Steering	1
31***08	Flange	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Steering Line) (2/2)

39***01	Hose	1
39***01	Hose	2
50***05	Union	2
50***10	Union	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Suction)

20***70	Plug (Only For Disconnecting Hammer)	1
31***50	Suction Flange	1
31***53	Tubo	1
31***55	Tubo	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Pump (1/2)

84***02	Pump Assembly	1
84***22	Gruppo Rotante	1
84***23	Unita' Di Controllo	1
84***24	Piastra Assiale	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Pump (2/2)

84***17	Pilot Valve	1
84***18	Pilot Valve	1
84***19	Valve Plate	1
84***20	Pipe	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Hydraulic Tank

20***40	Indicator Oil Level	1
20***60	Breather Plug	1
31***48	Breather Oil Container	1
31***70	Oil Filter Fastener	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Assy (2/4)

84***08	Spool Return Unit	1
84***09	Plug	1
84***10	Shuttle Valve Kit	1
84***13	Gasket Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (1/4)

84***39	Shovel Control Valve, Assembly	1
84***11	Big Plug	1
84***63	Floating Block, Shovel Lifting, Assembly	1
84***93	Inlet Element, Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (3/4) (Whit Return To Dig)

84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1
84***19	Gasket Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (4/4) (Floating Lifting Element)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***19	Gasket Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (Floating Element) (For Bucket 4 In 1) (3/5)

84***13	Gasket Kit	1
84***16	Valve Kit	2
84***17	Operating Kit	1
84***19	Gasket Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (For Bucket 4 In 1) (1/5)

84***67	Shovel Control Valve,Assembly	1
84***11	Big Plug	1
84***63	Floating Block, Shovel Lifting, Assembly	1
84***64	Block, Bucket Control, Assembly	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (For Bucket 4 In 1) (2/5)

84***04	Piston Kit	1
84***08	Spool Return Unit	1
84***09	Plug	1
84***10	Shuttle Valve Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (For Bucket 4 In 1) (5/5)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***19	Gasket Kit	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (With Return To Dig) (For Bucket 4 In 1) (4/5)

84***74	Gasket Kit, Secondary Valve	2
84***13	Gasket Kit	1
84***16	Valve Kit	2
84***19	Gasket Kit	1

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

Mark Plate

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Mark Plate : Equipment

31***51	Fastener	1
31***26	Pin	1
31***50	Protection	1
31***52	Locking Plate Cable	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Mark Plate : Stickers - Warning Plate (1/4)

30***91	Mark Plate, California Battery	1
31***13	Plate, Hydraulic Transmission Scheme	1
31***35	Plate, Multifunctional Control	1
31***36	Plate, Backhoe Iso Control (Only For Machine With	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Mark Plate : Stickers - Warning Plate (2/4)

31***04	Plate, ''Air Recycle''	1
81***23	Kit, Basic Sticker	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Mark Plate : Stickers - Warning Plate (3/4)

31***04	Plate, ''Air Recycle''	1
(8***3)	Kit, Basic Sticker	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Mark Plate : Stickers - Warning Plate (4/4)

(8***3)

Kit, Basic Sticker

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Mark Plate : Tool (Optional)

82***43	Filter Cartridge Wrench	1
82***50	Box Wrench (27 mm)	1
82***52	Box Wrench (32 mm)	1
82***54	Lever	1

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Work Equipment

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Arm And Bucket (Usa)

20***90	Pin	2
20***69	Tie-Rod	1
20***51	Adapter (Welded)	0
20***60	Tooth, Center (Tip Type)	0

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Arm Cylinder

39***11	Bushing	1
39***12	Cylinder	1
39***11	Rod	1
39***13	Piston	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Blade : Unit_01_of_02

31***50	Blade	1
80***13	Bolt	8
80***12	Nut	8

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Blade : Unit_02_of_02

31***50	Blade	1
80***99	Bolt	3
80***11	Nut	3

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Boom Cylinder

31***03	Pipe Stopper	1
39***07	Plug	1
39***14	Bushing	2
39***01	Brake Pin	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Boom Swing Cylinder

31***02	Cylinder	1
39***58	Bushing	1
39***09	Boom Swing Cylinder Assembly., R.H	1
39***10	Boom Swing Cylinder Assembly., L.H	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Bracket And Boom (1/2)

31***53	Support	1
31***02	Pin	1
31***03	Bushing	1
31***04	Bushing	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Bracket And Boom (2/2)

31***55	Support	1
31***56	Fastener	1
31***57	Cylinder	1
31***25	Union	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Bucket 4 In 1

31***54	Tooth	8
31***77	Pin	2
31***26	Protection	2
31***16	Blade	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Bucket 4 In 1 Cylinder

31***03	Piston Rod	1
31***04	Cylinder	1
31***74	Bucket 4 In 1 Cylinder, Assembly	2
31***01	Piston	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Bucket 4 In 1 Fast Coupling

31***54	Tooth	8
31***77	Pin	2
31***63	Bucket 4 In 1, Assembly	1
31***26	Protection	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Bucket Cylinder

39***11	Cylinder	1
39***12	Shaft	1
39***12	Piston	1
39***14	Cylinder Head	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Fork (For Bucket 4 In 1)

31***50	Rod	2
31***51	Fork	2
31***09	Pin	2
31***10	Pin	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Fork (For Bucket)

31***51	Bucket	1
31***53	Bucket With Fork, Assembly	1
31***51	Fork	2
31***52	Supporto	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Hammer M50 (1/2)

82***31	M50 Hammer, Assembly	1
82***33	Chisel Point (Optional)	1
82***38	Flat Point (Optional)	1
82***39	Pyramid Point (Optional)	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Hammer M50 (2/2)

82***54	Fitting	1
82***55	Retainer	2
82***56	Pin	2
82***57	Spring Pin	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Hammer M60 (1/2)

82***32	M60 Hammer, Assembly	1
82***34	Chisel Point (Optional)	1
82***45	Flat Point (Optional)	1
82***46	Pyramid Point (Optional)	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Hammer M60 (2/2)

82***54	Fitting	2
82***58	Spring	2
82***61	Adjuster Shim	10
82***63	Screw	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Horizontal Outrigger

31***59	Bearing Boom	4
31***52	Foot	2
39***56	Pin	2
39***57	Pin	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Horizontal Outrigger (With Rubber)

31***59	Bearing Boom	4
31***54	Foot	2
31***08	Rubberized Foot	6
39***56	Pin	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Horizontal Outrigger (With Rubber) (Optional)

31***59	Bearing Boom	2
31***55	Foot	2
31***56	Rubberized Foot	6
31***59	Bearing Boom	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Horizontal Outrigger Cylinder Protection

31***61	Clamp	2
31***62	Protection	2
31***29	Plate	4
31***46	Pin	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Jack (Quick Coupling For Bucket) (Optional)

20***19	Cylinder	1
50***13	Piston	2
50***14	Piston Rod	2
50***58	Fork	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Jig Arm

20***02	Lever, R.H	1
20***03	Lever, L.H	1
31***00	Pin	1
31***04	Slide Block, Upper	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Jig Arm Cylinder : Unit_01_of_02

20***08	Piston Rod	1
39***12	Cylinder Head	1
39***16	Piston	1
39***02	Cylinder	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Jig Arm Cylinder : Unit_02_of_02

Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Quick Hydraulic Coupling For Bucket (Optional)

20***82	Jack	1
31***59	Total	1
31***47	Closure	1
31***48	Pin	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Quick Hydraulic Coupling For Bucket 4 In 1 (Optional)

20***82	Jack	1
31***59	Total	1
31***47	Closure	1
31***48	Pin	2

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Quick Mechanical Coupling For Bucket (Optional)

31***59	Total	1
31***60	Bucket	1
31***61	Lever, Assembly	1
31***67	Clousure	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Quick Mechanical Coupling For Bucket 4 In 1 (Optional)

31***59	Total	1
31***61	Lever, Assembly	1
31***67	Clousure	1
31***02	Lever	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Safety Stay For Loader Arm End

31***09	Pin	4
31***51	Safety Attachment	1
80***83	Bolt	4
80***12	Self-Locking Nut	4

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Shovel Bucket And Arm (Usa)

02***16	Nut	15
02***55	Bolt (Only For Bucket With Cutting Edge)	15
12***51	Cutting Edge (Only For Bucket With Cutting Edge)	3
20***51	Adapter (Welded)	0

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Shovel Dumping Cylinder

39***13	Bushing	1
39***13	Cylinder Head	1
39***17	Left Hydraulic Jack, Assembly	1
39***12	Cylinder	1

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Komatsu : Wb150ps-2(S/N 150f50001-Up) : Work Equipment : Shovel Lifting Cylinder

39***13	Bushing	1
39***11	Cylinder Head	1
39***14	Hydraulic Jack, Assembly	1
39***12	Cylinder	1

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WB150PS-2(S/N 150F50001-Up) serial number reference

The PIN plate is located on the front frame, on the right-hand side of the articulation joint. The prefix is the first three characters of the serial number stamped on the plate (e.g., '150F' in '150F50001').

Prefix	Identifies	Notes
150F	WB150PS-2	Serial range 150F50001-Up. Factory parts catalog and service manual documentation identify this as the primary range for the WB150PS-2 wheel loader. The 'F' indicates the generation/series code for this model line. The '150' denotes the operating weight class (approx. 15 tonnes). This range is distinct from the WB150PS-2 S/N 150F50020-Up and 150F50032-Up variants which have separate catalog listings.

Frequently asked questions

What engine does the WB150PS-2 use?

The WB150PS-2 uses a Komatsu 4-cylinder turbocharged diesel engine. Specific model varies by production year and emissions tier, typically in the SAA4D series family.

What is the operating weight?

The operating weight is 8.95 tons (19,731 lb).

What replaced the WB150PS-2?

The WB150PS-2 was succeeded by the WB150-3 series backhoe loader.

Serial-range & configuration variants

This page covers the Komatsu WB150PS-2(S/N 150F50001-Up). Related factory variants of the same model family:

WB150PS-2(S/N 150F50020-Up)WB150PS-2(S/N 150F50032-Up)

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