Komatsuwheel loadermedium (wa140 - wa380)
Komatsu WB150-2(S/N 150F10001-Up)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu WB150-2 (S/N 150F10001-Up) is a wheeled loader-backhoe combination unit: a front loader bucket (about 0.95 m3 / 1.25 yd3) and a rear backhoe on outriggers, with an extendable-dipper option and hydraulic quick coupler for bucket changes. This serial range runs a Komatsu S4D106-1 series (FA/FB/FH) turbocharged 4-cylinder diesel, 4.412 L displacement, 106 x 125 mm bore/stroke, rated about 74.5 kW (100 hp) gross / 73 kW (98 hp) net, driving a standard (non-power-shift) transmission. Operating weight runs around 7,893 kg (17,400 lb), varying by configuration. Komatsu built the WB150-2 nameplate roughly 1999 through 2006, offering it alongside the WB150PS-2 power-shift and WB150AWS-2 all-wheel-steer variants before refreshing the line as the WB150-2N with a different S4D106-2SFA engine.
Within the WB150-2 nameplate, this S/N 150F10001-Up block is early production, built before later running-change blocks (150F10293-Up and 150F10303-Up) revised detail hardware and before Komatsu moved to the N-series refresh. The whole block is entirely mechanically governed: mechanical fuel injection, no ECM or CAN-bus, and an analog gauge cluster with warning lamps instead of fault codes or telemetry. That simplicity is exactly why it still holds value in the used and parts market: fewer electronic failure points, straightforward diagnosis with a wrench and gauges, and shared components with the WB140-2 sibling widen the parts pool. Municipal, utility, and rental fleets still run these units for basic dig-and-load work where a simple, rebuildable machine beats a complex one.
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 WB150-2(S/N 150F10001-Up) specifications
Engine
| Engine model | Komatsu S4D106-1 series (FA/FB/FH variants documented for this nameplate), 4-cylinder, turbocharged, direct-injection, water-cooled diesel |
| Displacement | 4.412 L (269 in³); bore x stroke 106 x 125 mm (4.2 x 4.9 in) |
| Gross power | 74.5 kW (100 hp) @ 2200 rpm |
| Net/flywheel power | 73 kW (98 hp) |
| Max. torque | 375 Nm (277 lb-ft) |
| Emissions certification | Not documented for this exact serial range. Komatsu's 2004 WB150-2N refresh of this platform carried Tier 2 certification on a revised engine tune — confirm certification for this specific machine with your dealer. |
Weights
| Operating weight | 7,893 kg (17,400 lb) |
Dimensions
| Transport length | 6.13 m (20.1 ft) |
| Transport width | 2.355 m (7.7 ft) |
| Transport height | 3.5 m (11.5 ft) |
Performance
| Standard loader bucket | 0.95 m³ (1.25 yd³) SAE capacity, 2.355 m (7.7 ft) width |
| Loader breakout force | 62 kN (13,825 lb) |
| Loader lift capacity at max height | 4,048 kg (8,925 lb) |
| Loader max dump height | 3.71 m (12.2 ft) |
| Backhoe max digging depth | 5.18–5.6 m (17.0–18.3 ft); figure varies by source/measurement standard |
| Backhoe digging reach | 2.75 m (9.0 ft) |
| Backhoe bucket tear-out force | 41 kN (9,220 lb) |
| Top travel speed (4th gear) | 37.8 km/h (23.5 mph); some spec sheets transpose the mph/km-h figures for this value — confirm with your dealer |
Service capacities (summary)
| Fuel tank | 130 L (34.3 US gal) |
| Hydraulic system | 92 L (24.3 US gal) |
| Engine oil | 7.9 L (2.1 US gal) |
| Cooling system | 14 L (3.7 US gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
WB150-2(S/N 150F10001-Up) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase, with filter | 7.9 L (2.1 US gal) | Komatsu EO diesel engine oil, multigrade 15W-40 for general service; drop to 10W-30 for cold starts below about -15°C (5°F) per the Komatsu viscosity chart. |
| Cooling system | 14 L (3.7 US gal) | Komatsu genuine pre-mixed antifreeze coolant (permanent ethylene-glycol type). A factory cold-area arrangement is offered for extreme sub-zero climates. |
| Fuel tank | 130 L (34.3 US gal) | Diesel fuel meeting the engine's turbocharged direct-injection S4D106 spec; use winter-grade diesel in freezing climates to prevent gelling. |
| Transmission / gearbox (power-shift reversing shuttle and synchronized 4-speed gearbox) | 17 L (4.5 US gal) | Komatsu TO powertrain oil (TO10 for cold climates, TO30 for warm climates); shuttle-shift torque converter circuit shares this reservoir. |
| Hydraulic system and tank (HydrauMind closed-center load-sensing circuit) | 92 L (24.3 US gal) | Komatsu HO hydraulic oil, multigrade 10W-30 type formulated for combined hydraulic/HST service across the ambient range. |
| Front axle (differential plus wheel-hub planetary final drives) | 8.5 L (2.3 US gal) | Komatsu AXO axle oil, SAE 80W-90 gear oil equivalent; heavier 85W-140 grade available for sustained high ambient temperatures. |
| Rear axle (differential with electro-hydraulic lock, plus wheel-hub planetary final drives) | 17.5 L (4.6 US gal) | Komatsu AXO axle oil, SAE 80W-90 gear oil equivalent, same spec as the front axle; heavier 85W-140 grade available for hot climates. |
| Grease (chassis, loader linkage, backhoe pivots) | Not a refill volume — service per grease-point schedule | Komatsu G2-Li multipurpose lithium EP grease, NLGI #2. Telescopic dipper-arm wear pads on this model are greaseless by design and need no grease service. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu WB150-2(S/N 150F10001-Up) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the WB150-2(S/N 150F10001-Up) beyond the schedule
Predictive Maintenance & Fluid Analysis
This mechanically governed S4D106-1 has no ECM or telemetry, so condition monitoring relies on manual sampling and gauge readings. Pull oil samples from the 7.9 L engine sump, 92 L hydraulic tank, and the front (8.5 L) and rear (17.5 L) axle housings on a fixed schedule to catch fuel dilution from a worn mechanical injection pump or water intrusion before failure. Watch the analog gauge cluster for early charge, oil-pressure, coolant-temp, and hydraulic-temp warnings since there is no fault-code history to check later.
Corrective & Common Repairs
Hydraulic pump chatter on this block is more often a suction-side air leak at a hose or fitting than a failed pump; check the suction line before condemning the pump. Shift lag under load points to charge-pump condition ahead of the transmission itself. Cold-start hesitation on the S4D106 usually traces to valve clearance drifting out of spec, not the injection pump. Backhoe boom, dipper, and bucket pins bush out from routine digging and stabilizer pads wear flat, both needing regular inspection.
Overhaul & Rebuild Points
Top-end work on the S4D106-1 (106 x 125 mm bore/stroke, 4.412 L) centers on turbocharger shaft play and valve train wear from years of mechanical governing. This serial block runs a standard transmission and conventional front (8.5 L) and rear (17.5 L) axles rather than a torque-converter power-shift, so rebuild attention goes to the gearbox (17 L) synchronizers and axle differentials. On the hydraulic end, inspect the load-sensing pump and backhoe swing-bearing bore for wear before a full hydraulic tank (92 L) service.
Seasonal & Environmental Servicing
Adjust S4D106 valve clearance before cold weather to keep starts crisp; this mechanically injected engine has no cold-start electronics to compensate. Check coolant glycol strength in the 14 L cooling system for freeze protection and drain the fuel-water separator more often in wet or humid seasons given the 130 L fuel tank exposure to condensation. Match hydraulic oil viscosity in the 92 L tank to ambient temperature swings, and shorten grease intervals on exposed loader and backhoe pins when working in sand, mud, or dusty conditions.
WB150-2(S/N 150F10001-Up) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| CA0139413 | Oil Filter | Lubrication service | Check fitment → |
| 312613054 | Oil Filter Fastener | Lubrication service | Check fitment → |
| 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 → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
WB150-2(S/N 150F10001-Up) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Charge (battery) warning lamp — red | Alternator output is not reaching the battery; charging circuit fault. | Loose or worn alternator belt, worn brushes or failed alternator, or a loose/corroded battery or charging-circuit connection. | Check belt tension and condition, inspect battery terminals and wiring, and test alternator output; do not ignore a lamp that stays on during operation. |
| Engine oil pressure warning lamp — red | Engine oil pressure has dropped below the safe minimum. | Low oil level, clogged oil filter, worn oil pump, or a failed oil pressure switch. | Stop the engine immediately, check oil level and filter condition, and inspect for leaks before restarting. |
| Coolant temperature warning (gauge needle in red zone / lamp) | Engine coolant temperature has exceeded normal operating range. | Low coolant level, radiator fins clogged with debris, failed thermostat, slipping or broken fan belt, or a weak water pump. | Idle and let the engine cool, check coolant level and clean the radiator, and inspect belt and water pump before resuming work. |
| Air cleaner restriction indicator | Intake air filter element is clogged, restricting airflow to the turbocharger and engine. | Dust and debris loading on the dry-element air filter, common in loader and trenching duty. | Service or replace the air filter element and reset the restriction indicator. |
| Hydraulic oil temperature warning lamp | Hydraulic system oil temperature is above normal working range. | Low hydraulic oil level, clogged hydraulic oil cooler or filter, or sustained heavy loader/backhoe duty in hot ambient conditions. | Reduce load, check hydraulic oil level and cooler for blockage, and replace the hydraulic filter if due. |
| Parking brake warning lamp | Parking brake is applied or the brake circuit has flagged a fault. | Parking brake left engaged, low brake system pressure, or a brake switch/wiring fault. | Confirm parking brake lever position and check brake system pressure and wiring before moving the machine. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
WB150-2(S/N 150F10001-Up) attachments & work tools
Front Loader Bucket (General Purpose)
Standard pin-on general-purpose bucket runs about 0.95-1.0 m3 (1.25 yd3) with a cutting width near 2.35 m (92-93 in) and roughly 62 kN breakout force. Bolt-on reversible cutting edge and replaceable teeth are standard wear items.
Front Loader Multi-Purpose (4-in-1) Bucket
A clamshell/4-in-1 bucket is offered in this size class for combined dozing, grading, loading, and clamping work. It uses the loader's tilt circuit plus a separate clamp cylinder and lever, so it needs the tilt-bucket linkage rather than the plain GP bucket mount.
Rear Backhoe Digging Bucket
Pin-on trenching buckets are offered in a range of widths for the backhoe end, with roughly 41 kN breakout force on the standard dipper. Bucket link and H-link geometry set the pin pattern, so width choices stay within the OEM bucket family.
Ditching / Grading Bucket
A wider ditching-style backhoe bucket is cataloged alongside the standard digging bucket for cleaning and shaping ditches and shallow grading work. It pins to the same dipper mount as the digging bucket.
Extendable Dipper (Extend-A-Hoe)
A factory dipper-extension cylinder option is available for this model, adding reach and depth over the fixed-length stick. Extended dig depth runs toward roughly 5.6 m (18.3 ft) versus a base-stick figure in the 4.7-5.2 m (15.5-17 ft) range; exact figures vary by configuration/series.
Backhoe Quick Coupler
A hydraulic pin-grabber quick coupler is available as a factory-fit option, with its own dedicated coupler cylinder, for fast bucket and tool changes without leaving the seat. Base mounting otherwise uses fixed pin-on attachment.
Hydraulic Thumb
A hydraulic thumb pins to the dipper opposite the bucket for grabbing rock, debris, brush, or pipe. It draws off the backhoe's auxiliary circuit and is a common option for this size of loader-backhoe.
Hydraulic Breaker / Hammer
Pedestal-style hydraulic breakers sized for this weight class mount on the dipper in place of the bucket and need an auxiliary hydraulic kit. Larger breakers and augers in this bracket typically want two-way (bi-directional) auxiliary flow rather than the single-acting bucket circuit.
Earth Auger
An auger drive can be mounted on the backhoe dipper for post-hole and pile-hole work, using the same bi-directional auxiliary circuit as a breaker. It is a common class option rather than a standard-catalog item on this machine.
Pallet Forks
Clamp-on or pin-on pallet forks fit the front loader bucket/lip for material handling. These are dealer- or aftermarket-fit rather than a factory bucket swap.
Skid-Steer Quick-Attach Conversion
Aftermarket conversion plates let the pin-on loader bucket be swapped for a universal skid-steer-style quick-attach face, opening up compatible forks, grapples, brooms, and blades. Converted capacity typically rates below the machine's full OEM loader lift capacity, so it is a secondary rather than primary mounting system.
Rear Stabilizers / Outriggers
Fixed rear stabilizer arms with pads are standard for backhoe digging stability, each on its own stabilizer cylinder. Wider or street-pad stabilizer shoes are a common option for paved-surface work in this class.
Operator Guarding (ROPS/FOPS Cab or Canopy)
A ROPS/FOPS-rated cab or canopy is the standard operator protection for this class, with a rear-facing window/guard for backhoe operation. A full cab with heat and air conditioning is a common factory option over the open canopy.
All WB150-2(S/N 150F10001-Up) assemblies by section
Every catalogued assembly group for the Komatsu WB150-2(S/N 150F10001-Up). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Control System
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Backhoe Control Levers
| 31***04 | Spacer | 8 |
| 31***12 | Connection L.H | 1 |
| 31***13 | Connection R.H | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Backhoe Control Pedal (Left Side)
| 31***62 | Bushing, Pedal | 1 |
| 31***63 | Pedal Support | 1 |
| 31***21 | Pedal | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Backhoe Control Pedal (Right Side)
| 31***61 | Bushing, Pedal | 1 |
| 31***63 | Pedal Support | 1 |
| 31***20 | Pedal | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Backhoe Control Pedal (Right Side) - Komatsu Layout Control
| 31***61 | Bushing, Pedal | 1 |
| 31***20 | Pedal | 1 |
| 31***26 | Spacer (Only For Canopy) | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Fuel Control Lever
| 31***48 | Command Boot | 1 |
| 31***67 | Lever Block | 1 |
| 31***81 | Assembly, Cable | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Fuel Control Pedal
| 31***81 | Support | 1 |
| 31***58 | Lever For Cable | 1 |
| 31***70 | Accelerator Pedal | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Shovel Control Lever
| 31***04 | Spacer | 4 |
| 31***58 | Pressure -Boot | 1 |
| 31***64 | Knob | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Shovel Control Lever (Bucket 4 In 1)
| 31***04 | Spacer | 4 |
| 31***58 | Pressure -Boot | 1 |
| 31***64 | Knob | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Control System : Transmission Lever Control
| 31***52 | Lever | 1 |
| 80***74 | Bolt | 1 |
| 80***06 | Nut | 1 |
Engine
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Camshaft & Driving Gear
| YM***50 | Bearing, Thrust | 1 |
| YM***00 | Gear,Injection Pump Drive | 1 |
| YM***00 | Gear | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Cooling Water System : Unit_02_of_02
| YM***10 | Protector | 1 |
| YM***02 | Screw | 4 |
| YM***50 | Pulley | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Cooling Water System : Unit_01_of_02
| YM***40 | Tube | 1 |
| YM***02 | Screw | 2 |
| YM***10 | Protector | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Crankshaft & Piston
| YM***00 | Connecting Rod, Assembly | 4 |
| YM***00 | Assembly, Piston (+0.25 mm) | 4 |
| YM***80 | Gear, Ring | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Cylinder Block
| YM***00 | Screw | 18 |
| YM***20 | Bolt | 10 |
| YM***40 | Spring | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Cylinder Head
| 87***37 | Turbo Engine, Assembly | 1 |
| 87***41 | Turbo Engine, Assembly | 1 |
| YM***70 | Cap Valve | 8 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Engine Stop Device
| YM***00 | Pin, Cotter | 2 |
| YM***02 | Nut | 1 |
| YM***11 | Coil, Assembly | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Exhaust Manifold & Silencer
| YM***80 | Packing | 1 |
| YM***02 | Screw | 2 |
| YM***02 | Screw | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Feed Pump
| YM***40 | Gasket | 4 |
| YM***60 | O-Ring | 2 |
| YM***00 | Screw | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Flywheel Housing & Oil Pump
| YM***02 | Screw | 26 |
| YM***20 | Oil Sump | 1 |
| YM***80 | Parallel Pin | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Fuel Injection Pump (2/2)
| YM***00 | Segment | 4 |
| YM***40 | Gasket | 2 |
| YM***00 | Seat | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Fuel Injection Valve
| YM***20 | Pipe | 1 |
| YM***40 | Injection Pipe N. 4 | 1 |
| YM***02 | Bolt Plated | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Fuel Line (1/2)
| YM***10 | Banjo Fitting | 1 |
| YM***80 | Screw | 1 |
| YM***11 | Clamp | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Fuel Line (2/2)
| YM***02 | Screw | 1 |
| YM***22 | Center Bolt | 1 |
| YM***00 | Banjo Bolt | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Gasket Kit
| YM***80 | Packing | 1 |
| YM***00 | O-Ring (Kit) | 1 |
| YM***40 | O-Ring,Drain Plug | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Gear Housing
| YM***02 | Bolt Plated | 11 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***02 | Screw | 6 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Generator
| YM***20 | Timer,Solenoid | 1 |
| YM***40 | Distance Piece | 1 |
| YM***40 | Screw | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Generator 60a
| YM***50 | Bolt Kit | 1 |
| YM***00 | Armature Assembly | 1 |
| YM***20 | Rear Support | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Generator 80a
| YM***10 | Pulley | 1 |
| YM***60 | Spool & Housing | 1 |
| YM***20 | Bolt Kit | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Governor (1/2)
| YM***40 | Screw | 1 |
| YM***00 | Screw | 1 |
| YM***20 | Support | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Governor (2/2)
| YM***00 | Gasket | 1 |
| YM***40 | Screw | 4 |
| YM***20 | Lever | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Lubricatin Oil Line
| YM***60 | Pipe | 1 |
| YM***81 | Retainer | 1 |
| YM***50 | Oil Pressure Transmitter | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Lubricating Oil System
| YM***00 | O-Ring (Kit) | 1 |
| YM***30 | Shim, 1.000 mm | 1 |
| YM***00 | Plug | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Starting Motor
| YM***30 | Dust Cover Set | 1 |
| YM***71 | Brush Holder Ass'Y | 1 |
| YM***10 | Terminal Cover | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Suction Manifold
| YM***00 | Heather Air | 1 |
| YM***02 | Screw | 1 |
| YM***50 | Joint | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine : Turbocharger
| YM***02 | Nut | 4 |
| YM***90 | Packing | 1 |
| YM***10 | Turbine | 1 |
Engine Related Parts And Electrical System
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Artic Version
| 88***28 | Battery | 1 |
| YM***66 | Connection | 1 |
| YM***65 | 30? C Heather Air | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Battery Detachment
| 31***88 | Terminal (+), Assembly | 1 |
| 31***10 | Switch Support | 1 |
| 80***66 | Bolt | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Electrical System (1/6)
| 31***07 | Cover | 1 |
| 31***57 | Support | 1 |
| 31***93 | Wiring Harness, Assembly | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Electrical System (2/6)
| 31***68 | Wiring, Electro-Valve Line | 1 |
| 31***10 | Wiring Harness, Assembly | 1 |
| 31***12 | Wiring Harness, Front | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Electrical System (3/6)
| 31***70 | Battery Cover | 1 |
| 31***89 | Terminal(+), Assembly | 1 |
| 31***90 | Terminal (-), Assembly | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Electrical System (5/6)
| 80***44 | Bolt | 1 |
| 80***47 | Bolt | 1 |
| 80***43 | Screw | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Electrical System (6/6)
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Engine And Drive Connection
| 20***08 | Union | 1 |
| 31***77 | Level Pipe | 1 |
| 31***78 | Dip Oil Stick | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Engine Mounting Part
| 31***62 | Right Support | 1 |
| 31***65 | Left Support | 1 |
| 31***89 | Motor Support | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Front Dashboard (1/2)
| 80***51 | Screw | 4 |
| 80***05 | Spring Washer | 4 |
| 88***38 | Conmutator, Assembly | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Front Dashboard (2/2)
| 31***84 | Front Dashboard, Assembly (Only For Cabin) | 1 |
| 31***97 | Front Dashboard, Assembly (Only For Canopy) | 1 |
| 31***00 | Front Instrument Board | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Fuel Piping
| 80***88 | Bolt (With Stabilizers Only) | 2 |
| 80***08 | Bolt (Only With Cabin) | 5 |
| 80***01 | Spring Washer (With Stabilizers Only) | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Fuses Box
| 31***82 | Box, Assembly | 1 |
| 80***96 | Bolt | 2 |
| 80***33 | Screw | 5 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Lateral Dashboard (1/2)
| 31***13 | Lateral Dashboard, Assembly (For Cabin) | 1 |
| 31***14 | Lateral Dashboard, Assembly (For Canopy) | 1 |
| 31***01 | Lateral Instrument Board | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Lateral Dashboard (2/2)
| 31***54 | Switch | 1 |
| 31***56 | Switch | 1 |
| 85***72 | Bulb | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Muffler
| 30***55 | Clamp (Aspirated Engine) | 3 |
| 31***53 | Hose | 1 |
| 31***55 | Stub Pipe | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Prefilter (Optional)
| 31***19 | Gasket | 1 |
| 31***43 | Hood | 1 |
| 31***36 | Gasket | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Radiator
| 31***11 | Gasket | 1 |
| 31***90 | Complete Radiator | 1 |
| 31***91 | Radiator Support | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Radiator Tank
| 31***69 | Chamber | 1 |
| 31***83 | Hose | 1 |
| 31***84 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Engine Related Parts And Electrical System : Self Supply Pump (Optional)
| 30***41 | Pipe | 1 |
| 31***90 | Closure | 1 |
| 31***49 | Pin | 1 |
Frame
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Axle Lubricating Piping
| 39***45 | Tube | 1 |
| 50***15 | Union | 1 |
| 50***52 | Union | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Frame
| 31***55 | Frame Horizontal Outrigger | 1 |
| 31***01 | Plate | 2 |
| 31***06 | Plate Fixing | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle (2wd) (1/3)
| 20***22 | Front Axle, Assembly | 1 |
| CA***10 | Bushing | 1 |
| CA***30 | Spring Washer | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle (2wd) (2/3)
| CA***10 | Greaser Nipple | 2 |
| CA***95 | Jack | 1 |
| CA***11 | Fitting | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle (2wd) (3/3)
| CA***81 | Thrust Washer | 2 |
| CA***70 | Bearing | 4 |
| CA***40 | Pin | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle (4wd) (1/6)
| 20***28 | Front Axle, Assembly | 1 |
| CA***10 | Bushing | 1 |
| CA***35 | Bush | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle (4wd) (2/6)
| 20***28 | Front Axle, Assembly | 1 |
| CA***10 | Greaser Nipple | 2 |
| CA***95 | Jack | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle (4wd) (4/6)
| CA***09 | Bearing | 2 |
| CA***78 | Locking Plate | 2 |
| CA***61 | Differential Kit | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle (4wd) (5/6)
| CA***60 | Fork | 1 |
| CA***61 | Double Joint | 2 |
| CA***25 | Spider | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle (4wd) (6/6)
| CA***90 | Centering Bush | 16 |
| CA***70 | Bearing | 4 |
| CA***40 | Pin | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Axle Fixing (2wd)
| 31***00 | Front Support | 1 |
| 31***01 | Rear Support | 1 |
| 31***02 | Pin | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Front Propeller Shaft And Front Axle Fixing (4wd)
| 31***55 | Shaft | 1 |
| 31***67 | Protection | 1 |
| 31***00 | Front Support | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Handbrake And Rear Propeller Shaft
| 31***56 | Shaft | 1 |
| 31***75 | Assembly, Cable | 1 |
| 31***32 | Fasterner Cable | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Hydraulic Piping (Brake Line)
| 31***01 | Union | 2 |
| 31***52 | Tubo | 1 |
| 31***53 | Tube | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Hydraulic Piping (Rear Axle Locking Control)
| 39***13 | Hose L=1150 | 1 |
| 39***22 | Hose L=800 | 1 |
| 39***51 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Hydraulic Piping (Transmission Cooling Line)
| 39***03 | Hose | 1 |
| 39***01 | Hose | 1 |
| 50***87 | Union | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Rear Axle (1/7)
| 20***27 | Rear Axle, Assembly | 1 |
| CA***11 | Oil Seal | 2 |
| CA***66 | Bolt | 22 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Rear Axle (2/7)
| CA***91 | Shim 3.00 mm | 0 |
| CA***93 | Shim 3.20 mm | 0 |
| CA***51 | Bearing | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Rear Axle (3/7)
| CA***77 | Ring | 1 |
| CA***96 | Pin | 4 |
| CA***67 | Bearing | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Rear Axle (4/7)
| CA***41 | Shaft | 1 |
| CA***21 | O-Ring | 2 |
| CA***40 | Bush | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Rear Axle (5/7)
| CA***58 | O-Ring | 2 |
| CA***33 | Reaction Plate | 2 |
| CA***87 | Flange | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Rear Axle (6/7)
| CA***63 | Brakes Shaft | 2 |
| CA***61 | Bush | 2 |
| CA***52 | Spring | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Rear Axle (7/7)
| CA***90 | Centering Bush | 16 |
| CA***77 | Snap Ring | 2 |
| CA***99 | Coupling Bushing | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (1/11)
| 20***63 | Drive Shaft, Assembly | 1 |
| CA***90 | Pump Assembly | 1 |
| CA***66 | Oil Seal | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (10/11)
| CA***86 | Copper Washer | 1 |
| CA***12 | Valve Cover | 1 |
| CA***40 | Copper Washer | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (11/11)
| CA***71 | Flange | 1 |
| CA***69 | Flywheel Towing Plate | 1 |
| CA***50 | Spring Washer | 6 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (2/11)
| CA***70 | Valve Kit | 1 |
| CA***31 | O-Ring | 1 |
| CA***68 | Cover | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (3/11)
| CA***22 | Plug | 4 |
| CA***60 | Copper Washer | 4 |
| CA***23 | Plug | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (4/11)
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (5/11)
| CA***86 | Thrust Washer | 1 |
| CA***33 | Gear | 1 |
| CA***60 | Bearing | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (6/11)
| CA***86 | Thrust Washer | 1 |
| CA***38 | Gear | 1 |
| CA***67 | Spacer | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (7/11)
| CA***01 | Ball | 3 |
| CA***00 | Sleeve | 1 |
| CA***03 | Spring | 3 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (8/11)
| CA***04 | Drive Fork 3-4 | 1 |
| CA***17 | Bolt | 1 |
| CA***93 | Bolt | 3 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (2wd) (9/11)
| CA***22 | Plug | 4 |
| CA***29 | O-Ring | 3 |
| CA***60 | Copper Washer | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (1/13)
| 20***58 | Drive Shaft, Assembly | 1 |
| CA***90 | Pump Assembly | 1 |
| CA***66 | Oil Seal | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (10/13)
| CA***12 | Valve Cover | 1 |
| CA***40 | Copper Washer | 1 |
| CA***26 | Electro-Valve Coil | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (11/13)
| CA***22 | Plug | 4 |
| CA***29 | O-Ring | 3 |
| CA***60 | Copper Washer | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (12/13)
| CA***22 | Plug | 1 |
| CA***60 | Copper Washer | 1 |
| CA***05 | Screw | 3 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (13/13)
| CA***71 | Flange | 1 |
| CA***69 | Flywheel Towing Plate | 1 |
| CA***50 | Spring Washer | 6 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (2/13)
| CA***70 | Valve Kit | 1 |
| CA***31 | O-Ring | 1 |
| CA***68 | Cover | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (3/13)
| CA***22 | Plug | 3 |
| CA***60 | Copper Washer | 3 |
| CA***68 | Breather Plug | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (4/13)
| CA***90 | Seal Ring | 2 |
| CA***86 | Thrust Washer | 2 |
| CA***29 | Bearing | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (5/13)
| CA***86 | Thrust Washer | 1 |
| CA***33 | Gear | 1 |
| CA***60 | Bearing | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (6/13)
| CA***86 | Thrust Washer | 1 |
| CA***73 | Gear | 1 |
| CA***38 | Gear | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (7/13)
| CA***01 | Ball | 3 |
| CA***00 | Sleeve | 1 |
| CA***03 | Spring | 3 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (8/13)
| CA***84 | Seal Ring | 1 |
| CA***63 | Snap Ring | 1 |
| CA***86 | Thrust Washer | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Transmission (4wd) (9/13)
| CA***04 | Drive Fork 3-4 | 1 |
| CA***17 | Bolt | 1 |
| CA***93 | Bolt | 3 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Wheels (2wd)
| 31***60 | Rear Rim | 2 |
| 31***64 | Front Rim | 2 |
| 81***26 | Tyre (19,5 L24-10pr) | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Frame : Wheels (4wd)
| 31***60 | Rear Rim | 2 |
| 31***61 | Front Rim | 2 |
| 81***25 | Tyre (14x17,5 10pr) | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Guard And Operator'S Cab
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Anti-Vandalism Cover (Canopy)
| 31***93 | Cover | 1 |
| 31***78 | Boss | 4 |
| 31***11 | Spacer | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (10/11)
| 80***86 | Washer | 4 |
| 80***56 | Bolt | 4 |
| 80***60 | Screw | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (11/11)
| 80***25 | Screw | 4 |
| 80***60 | Screw | 8 |
| 80***06 | Washer, Spring | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (2/11)
| 80***86 | Washer | 4 |
| 80***00 | Screw (Only For Germany) | 4 |
| 80***56 | Screw | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (3/11)
| 80***71 | Bolt | 4 |
| 80***45 | Screw | 2 |
| 80***08 | Nut (With Stabilizers Only) | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (4/11)
| 31***41 | Cylinder | 2 |
| 31***42 | Spring | 4 |
| 31***43 | Pin | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (5/11)
| 80***48 | Bolt | 4 |
| 80***64 | Screw | 5 |
| 80***66 | Self Taping Screw | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (6/11)
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (7/11)
| 80***64 | Screw | 2 |
| 80***40 | Self-Tapping Screw | 2 |
| 80***06 | Spring Washer | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (8/11)
| 31***03 | Canopy | 1 |
| 31***50 | Gasket | 7 |
| 31***94 | Front Gasket | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Cabin (9/11)
| 80***30 | Boltw | 1 |
| 80***56 | Self Taping Screw | 2 |
| 80***05 | Self-Locking Nut | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Canopy (1/4)
| 31***94 | Operator'S Canopy, Assembly | 1 |
| 31***03 | Canopy | 1 |
| 31***04 | Canopy Structure | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Canopy (2/4)
| 31***03 | Plug | 4 |
| 80***05 | Screw | 2 |
| 81***58 | Loat Hooks | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Canopy (3/4)
| 80***86 | Washer | 4 |
| 80***56 | Bolt | 4 |
| 80***60 | Screw | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Canopy (4/4)
| 31***04 | Wrapper | 0 |
| 80***25 | Screw | 4 |
| 80***60 | Screw | 8 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Covers (1/3)
| 31***54 | Hinge Linkage | 1 |
| 31***84 | Inspection Plug | 1 |
| 31***86 | Hood (Canopy) | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Covers (2/3)
| 31***00 | Front Closure | 1 |
| 31***26 | Support | 1 |
| 31***32 | Squab Panel | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Covers (3/3)
| 31***01 | Right Splash-Board (Cabin) | 1 |
| 31***02 | Left Splash-Board (Cabin) | 1 |
| 31***03 | Left Splash-Board (Cabin) | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Dashboard, Floor Mat (Cabin)
| 31***67 | Floor Board | 1 |
| 31***90 | Lateral Dashboard | 1 |
| 31***05 | Front Dashboard | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Dashboard, Floor Mat (Canopy)
| 31***67 | Floor Board | 1 |
| 31***91 | Lateral Dashboard | 1 |
| 31***07 | Cover | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Heating System (1/2) : Unit_01_of_02
| 31***80 | Wall | 1 |
| 31***51 | Box | 1 |
| 31***03 | Cock Support | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Heating System (1/2) : Unit_02_of_02
| 31***80 | Wall | 1 |
| 31***03 | Cock Support | 1 |
| 80***45 | Screw | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Heating System (2/2) : Unit_01_of_02
| 31***68 | Control Cable | 1 |
| 31***19 | Hose Protection | 1 |
| 31***02 | Adhesive Plate | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Heating System (2/2) : Unit_02_of_02
| 31***68 | Control Cable | 1 |
| 31***29 | Hose Protection | 1 |
| 31***02 | Adhesive Plate | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Motor Air Blending System (2/2)
| 31***09 | Gasket | 1 |
| 31***51 | Compressor | 1 |
| 31***57 | Filter | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Operator'S Seat (For Cabin)
| 81***79 | Back Foam | 1 |
| 81***81 | Seat Foam | 1 |
| 81***86 | Damper Assembly Kit | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Operator'S Seat (For Canopy)
| 81***79 | Back Foam | 1 |
| 81***81 | Seat Foam | 1 |
| 81***86 | Damper Assembly Kit | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Operator'S Seat Support (For Cabin)
| 31***64 | Box | 1 |
| 31***66 | Box | 1 |
| 31***89 | Operator'S Seat, Assembly | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Guard And Operator'S Cab : Operator'S Seat Support (For Canopy)
| 31***64 | Box | 1 |
| 31***66 | Box | 1 |
| 31***98 | Screw, Assembly | 1 |
Hydraulic System Work Equipment
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Adjustable Guide
| 31***07 | Pin | 1 |
| 31***50 | Support | 1 |
| 31***51 | Stud Bolt Steering | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (8/8)
| 84***11 | Big Plug | 1 |
| 84***94 | Outlet Section, Assembly | 1 |
| 84***16 | Outlet Housing | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Bucket Hydraulic Piping (Mechanical Fast Coupling Line 4in1)(Optional)
| 20***51 | Coupling, Assembly. (For Hand Hammer) | 2 |
| 20***52 | Fitting (For Hand Hammer) | 1 |
| 20***53 | Body (For Hand Hammer) | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Floor Board Hydraulic Tank
| 31***19 | Splash Guard | 1 |
| 31***76 | Hinge | 1 |
| 31***61 | Floor Board | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Horizontal Outrigger Cylinder L.H.
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Horizontal Outrigger Cylinder R.H.
| 39***01 | Brake Pin | 1 |
| 39***06 | Jack Assembly, R.H | 1 |
| 39***07 | Jack Assembly, R.H | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Arm Cylinder Line)
| 31***17 | Pin | 1 |
| 31***21 | Bushing | 2 |
| 39***67 | Pin | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Arm Cylinder Line) (Safety Valve)
| 31***65 | Pipe | 1 |
| 31***71 | Union | 1 |
| 31***72 | Pipe | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Boom Cylinder Line)
| 31***11 | Pin | 1 |
| 31***41 | Buckle | 2 |
| 31***42 | Plate | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Boom Swing Cylinder Line)
| 31***00 | Support | 2 |
| 31***08 | Semibuckle | 4 |
| 39***62 | Pin | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Bucket Cylinder Line) (1/2)
| 31***21 | Bushing | 2 |
| 39***06 | Hose | 2 |
| 50***13 | Union | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Delivery Line) : Unit_01_of_02
| 30***32 | Mini-Intake | 1 |
| 39***13 | Hose | 1 |
| 39***14 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Delivery Line) : Unit_02_of_02
| 30***32 | Mini-Intake | 1 |
| 31***71 | Pipe | 1 |
| 39***13 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (1/3)
| 39***09 | Hose | 1 |
| 39***06 | Hose | 1 |
| 50***06 | Plug | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (2/3)
| 31***54 | Extension | 1 |
| 31***21 | Bushing | 2 |
| 39***08 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (3/3)
| 31***08 | Support, R.H | 1 |
| 31***09 | Support, L.H | 1 |
| 39***06 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Jig Arm Cylinder Line)
| 31***21 | Bushing | 2 |
| 39***08 | Hose | 1 |
| 39***02 | Hose | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Oil Cooler And Return Line) (1/2)
| 31***62 | Pipe | 1 |
| 31***14 | Union | 2 |
| 39***01 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Oil Cooler And Return Line) (2/2) : Unit_02_of_02
| 31***17 | Union | 1 |
| 31***21 | Protection | 1 |
| 31***29 | Hose Protection | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Oil Cooler And Return Line) (2/2) : Unit_01_of_02
| 31***17 | Union | 1 |
| 39***01 | Hose | 1 |
| 39***02 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Outrigger Cylinder Line)
| 20***70 | Buckle | 2 |
| 31***29 | Hose Protection | 2 |
| 31***76 | Pipe | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Outrigger Cylinder Line) (Safety Valves)
| 30***31 | Union | 4 |
| 30***74 | Union | 2 |
| 31***73 | Pipe | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Ride Control) (1/2) (Optional)
| 31***00 | Union | 1 |
| 31***01 | Support | 1 |
| 31***02 | Support | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Ride Control) (2/2) (Optional)
| 39***47 | Union | 1 |
| 39***19 | Hose | 1 |
| 39***25 | Hose | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Tipping Cylinder) (Electric Safeti Valve)
| 31***00 | Fastener | 2 |
| 31***01 | Plate | 2 |
| 31***75 | Pipe | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Steering Line) (2/2)
| 39***01 | Hose | 1 |
| 39***01 | Hose | 2 |
| 50***05 | Union | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Pump (2/2)
| 84***17 | Pilot Valve | 1 |
| 84***18 | Pilot Valve | 1 |
| 84***19 | Valve Plate | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydraulic Tank
| 20***40 | Indicator Oil Level | 1 |
| 20***60 | Breather Plug | 1 |
| 31***48 | Breather Oil Container | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Hydrualic Piping (Oil Cooler And Return Line) (1/2)
| 31***62 | Pipe | 1 |
| 31***70 | Support | 1 |
| 31***73 | Pipe | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (2/4)
| 84***08 | Spool Return Unit | 1 |
| 84***09 | Plug | 1 |
| 84***10 | Shuttle Valve Kit | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Hydraulic System Work Equipment : Shovel Control Valve (3/4) (With Return To Dig)
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
| 84***17 | Operating Kit | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Mark Plate
Komatsu : Wb150-2(S/N 150f10001-Up) : Mark Plate : Equipment
| 31***51 | Fastener | 1 |
| 31***26 | Pin | 1 |
| 31***50 | Protection | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Mark Plate : Stickers - Warning Plate (1/5)
| 30***91 | Mark Plate, California Battery | 1 |
| 31***12 | Plate, Hydraulic Transmission Scheme | 1 |
| 31***35 | Plate, Multifunctional Control | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Mark Plate : Stickers - Warning Plate (2/5)
| 31***04 | Plate, ''Air Recycle'' | 1 |
| 81***23 | Kit, Basic Sticker | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Mark Plate : Stickers - Warning Plate (3/5)
| 31***04 | Plate, ''Air Recycle'' | 1 |
| (8***3) | Kit, Basic Sticker | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Mark Plate : Stickers - Warning Plate (4/5) (Only For Machine With Cabin)
| (8***3) | Kit, Basic Sticker | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Mark Plate : Stickers - Warning Plate (5/5) (Only For Machine With Canopy)
| (8***3) | Kit, Basic Sticker | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Work Equipment
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Arm And Bucket (Usa)
| 20***90 | Pin | 2 |
| 20***69 | Tie-Rod | 1 |
| 20***51 | Adapter (Welded) | 0 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Arm Cylinder
| 39***11 | Bushing | 1 |
| 39***12 | Cylinder | 1 |
| 39***11 | Rod | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Blade : Unit_02_of_02
| 31***50 | Blade | 1 |
| 80***99 | Bolt | 3 |
| 80***11 | Nut | 3 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Blade : Unit_01_of_02
| 31***50 | Blade | 1 |
| 80***13 | Bolt | 8 |
| 80***12 | Nut | 8 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Boom Cylinder
| 31***03 | Pipe Stopper | 1 |
| 39***07 | Plug | 1 |
| 39***14 | Bushing | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Boom Swing Cylinder
| 31***02 | Cylinder | 1 |
| 39***58 | Bushing | 1 |
| 39***09 | Boom Swing Cylinder Assembly., R.H | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Bracket And Boom (1/2)
| 31***53 | Support | 1 |
| 31***02 | Pin | 1 |
| 31***03 | Bushing | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Bracket And Boom (2/2)
| 31***55 | Support | 1 |
| 31***56 | Fastener | 1 |
| 31***57 | Cylinder | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Bucket 4 In 1
| 31***54 | Tooth | 8 |
| 31***77 | Pin | 2 |
| 31***26 | Protection | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Bucket Cylinder
| 39***11 | Cylinder | 1 |
| 39***12 | Shaft | 1 |
| 39***12 | Piston | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Fork (For Bucket 4 In 1)
| 31***50 | Rod | 2 |
| 31***51 | Fork | 2 |
| 31***09 | Pin | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Fork (For Bucket)
| 31***51 | Bucket | 1 |
| 31***53 | Bucket With Fork, Assembly | 1 |
| 31***51 | Fork | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Hammer M50 (2/2)
| 82***54 | Fitting | 1 |
| 82***55 | Retainer | 2 |
| 82***56 | Pin | 2 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Hammer M60 (2/2)
| 82***54 | Fitting | 2 |
| 82***58 | Spring | 2 |
| 82***61 | Adjuster Shim | 10 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Horizontal Outrigger
| 31***56 | Bearing Boom | 2 |
| 31***59 | Bearing Boom | 2 |
| 31***52 | Foot | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Horizontal Outrigger (With Rubber)
| 31***56 | Bearing Boom | 2 |
| 31***59 | Bearing Boom | 2 |
| 31***54 | Foot | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Horizontal Outrigger (With Rubber) (Optional)
| 31***59 | Bearing Boom | 2 |
| 31***55 | Foot | 2 |
| 31***56 | Rubberized Foot | 6 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Horizontal Outrigger Cylinder Protection
| 31***61 | Clamp | 2 |
| 31***62 | Protection | 2 |
| 31***29 | Plate | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Jack (Quick Coupling For Bucket) (Optional)
| 20***19 | Cylinder | 1 |
| 50***13 | Piston | 2 |
| 50***14 | Piston Rod | 2 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Jig Arm
| 20***02 | Lever, R.H | 1 |
| 20***03 | Lever, L.H | 1 |
| 31***00 | Pin | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Jig Arm Cylinder : Unit_02_of_02
| 31***56 | Clamp | 1 |
| 31***53 | Pipe | 1 |
| 31***54 | Pipe | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Jig Arm Cylinder : Unit_01_of_02
| 20***08 | Piston Rod | 1 |
| 39***12 | Cylinder Head | 1 |
| 39***16 | Piston | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Quick Hydraulic Coupling For Bucket (Optional)
| 20***82 | Jack | 1 |
| 31***59 | Total | 1 |
| 31***47 | Closure | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Quick Hydraulic Coupling For Bucket 4 In 1 (Optional)
| 20***82 | Jack | 1 |
| 31***59 | Total | 1 |
| 31***47 | Closure | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Quick Mechanical Coupling For Bucket (Optional)
| 31***59 | Total | 1 |
| 31***60 | Bucket | 1 |
| 31***61 | Lever, Assembly | 1 |
Komatsu : Wb150-2(S/N 150f10001-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 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Safety Stay For Loader Arm End
| 31***09 | Pin | 4 |
| 31***51 | Safety Attachment | 1 |
| 80***83 | Bolt | 4 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Shovel Bucket And Arm (Usa)
| 02***55 | Bolt (Only For Bucket With Cutting Edge) | 15 |
| 02***16 | Nut (Only For Bucket With Cutting Edge) | 15 |
| 12***51 | Cutting Edge (Only For Bucket With Cutting Edge) | 3 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Shovel Dumping Cylinder
| 39***13 | Bushing | 1 |
| 39***13 | Cylinder Head | 1 |
| 39***12 | Cylinder | 1 |
Komatsu : Wb150-2(S/N 150f10001-Up) : Work Equipment : Shovel Lifting Cylinder
| 39***13 | Bushing | 1 |
| 39***11 | Cylinder Head | 1 |
| 39***14 | Hydraulic Jack, Assembly | 1 |
WB150-2(S/N 150F10001-Up) serial number reference
The WB150-2 serial/PIN plate is commonly found on the right-hand side of the main frame below the operator's cab, with a duplicate tag sometimes on the left side of the engine compartment; Komatsu dealer references for this WB-series line also place a VIN-style plate behind the brake pedal on the cab firewall, so check both spots if one is missing. The plate shows a single machine number such as 150F10001: "150" ties to the WB150 model family, "F" is the series letter, and the trailing digits are the sequential production number. Read the digit right after "F" to separate the standard-transmission WB150-2 ("1") from the power-shift WB150PS-2 ("5") and the all-wheel-steer WB150AWS-2 ("8" or "EF8"), then compare the full number against published S/N breakpoints to place the machine in the correct running-change block.
| Prefix | Identifies | Notes |
|---|---|---|
| 150F1 | WB150-2 standard-transmission backhoe loader (base production block) | Machine number for this catalog entry starts at 150F10001 and runs to 150F10292, the block covered by this parts-book entry. Engine is the Komatsu S4D106-1 series (FA/FB/FH variants), a turbocharged inline 4-cylinder diesel, about 74.6 kW (100 hp) gross at 2200 rpm, 4.412 L displacement - the same base engine family used on the sibling WB140-2. Komatsu's cited production window for the WB150-2 nameplate spans 1999 into the mid-2000s, but this specific low block sits at the front of that run, so treat it as roughly 1999-2000; confirm the exact year with a dealer. Later running-change documentation for the same WB150-2 nameplate splits again at 150F10293 and 150F10303 - those are separate catalog blocks, not this one, and no engine change is documented at those splits. Some European parts-catalog listings tag this serial block with an Italy-market/plant marker, consistent with Komatsu's Italian utility-equipment manufacturing base for the WB-series line, but the exact plant is not independently confirmed - verify with a dealer. The digit right after "150F" separates configuration on this model: "1" is this standard-transmission WB150-2, "5" (150F50001-up) belongs to the power-shift WB150PS-2, and "8" or "EF8" (150F80001-up / 150EF80001-up) belong to the all-wheel-steer WB150AWS-2 - related but distinct machines, not part of this family. |
Frequently asked questions
What engine does the Komatsu WB150-2 (S/N 150F10001-Up) use?
A Komatsu S4D106-1 series (FA/FB/FH) turbocharged 4-cylinder diesel, 4.412 L displacement, 106 x 125 mm bore/stroke, rated about 74.5 kW (100 hp) gross / 73 kW (98 hp) net. It is a mechanically governed engine with mechanical fuel injection and no ECM.
What is the operating weight of the Komatsu WB150-2 (S/N 150F10001-Up)?
About 7,893 kg (17,400 lb) in standard configuration. Weight varies slightly with attachments and between the standard-transmission WB150-2, the power-shift WB150PS-2, and the all-wheel-steer WB150AWS-2 variants.
What replaced the Komatsu WB150-2 (S/N 150F10001-Up)?
Later production within the same nameplate moved to running-change serial blocks (150F10293-Up, then 150F10303-Up) before Komatsu refreshed the line as the WB150-2N, which uses a different S4D106-2SFA turbocharged engine. The WB150-2 nameplate ran through roughly 2006.
What WB150-2(S/N 150F10001-Up) owners discuss
Owners report the hydraulic pump chattering or getting noisy under load. Is that a pump failure?
Not usually. On these machines a chattering or noisy pump more often traces back to a small air leak on the suction side than to the pump itself — a cracked feeder hose or a loose fitting between the tank and the pump lets in just enough air to make the pump chatter under load. Before condemning the pump, check the suction hose and fittings for cracks or looseness, especially on units that have racked up heavy working hours. Have your dealer verify the pump is actually at fault before authorizing replacement.
The machine lags or hesitates shifting into 2nd gear under a heavy push (snow pushing, loader work). What's the usual cause?
Operators chasing this symptom get pointed toward the charge pump feeding the powershift transmission rather than the transmission itself. Weak charge pressure typically only shows up once the machine is under load, not at idle or in light duty, which is why it gets mistaken for a transmission problem. Check charge pump output pressure against the shop manual spec before assuming a shift-package or torque converter rebuild is needed.
Is hard cold starting normal or a sign of a fuel problem on this engine?
The turbocharged S4D106-family diesel used in this range is known to be sensitive to valve clearance drifting out of adjustment, and that shows up first as hard or inconsistent cold starting rather than as an obvious fuel fault. Owners chasing hard-starting complaints often find the fix is a valve lash adjustment, not injectors or glow plugs. Because valve clearance affects compression and starting behavior, have your dealer verify clearances against factory spec rather than guessing.
The machine won't crank even though there's power at the battery. What should get checked first?
No-crank complaints on this generation of loader-backhoe are frequently traced to the starting safety circuit rather than the starter motor: a failed starter relay, a neutral safety switch out of adjustment, or a seat switch/steering-lock switch not making contact. Corrosion at connectors near the seat base and ignition switch is a repeat culprit, and a low or erratic signal reaching the safety relay from the charging circuit can mimic a starter fault. Trace the safety-interlock wiring before swapping the starter or alternator.
Where does wear concentrate on the backhoe end of a machine like this, and is it a red flag?
Wear concentrates in the pin-and-bushing joints of the backhoe linkage, especially the boom's swing/pivot points and the cylinders that swing the boom side to side — that's the first place experienced buyers check for play. Stabilizer (outrigger) pads wearing and chunking with regular use is considered routine and not a warning sign by itself. On the loader end, front axle king pins and steering linkage see above-average wear on units run hard in loader duty, so check for play there too.
What should I check when looking at a used one of these before buying?
Run the field test buyers use on this class of machine: with the backhoe, try to lift the rear of the machine off the ground using the dipper and bucket and "walk" it sideways — if it can't do that cleanly, the hydraulics are underpowered or worn and that should factor into your offer. Check for play throughout every pin and bushing joint in the backhoe linkage, listen for pump chatter under load (often just a suction-side air leak, but verify rather than assume), and confirm the starting safety circuit — seat switch, neutral safety switch — works correctly, since that circuit fails often on this generation. Parts sourced secondhand for this pre-refresh generation can be harder to find than for the later refreshed models, factor that into ownership cost. Have your dealer run a load test on the hydraulic pump and transmission before you commit to the purchase.
What's the general reputation of this generation among people who've run or serviced them?
Dealer technicians and long-time users describe this generation as solid but unglamorous: reliable in day-to-day field work, but overshadowed in popularity by the later refreshed models, and some operators found the loader end underpowered compared to similarly sized backhoe loaders from other major brands of the era. That reputation carries through to resale value and to how easy parts are to find on the secondhand market today.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Komatsu WB150-2(S/N 150F10001-Up). Related factory variants of the same model family:
WB150-2(S/N 150F10293-Up)WB150-2(S/N 150F10303-Up)
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