Komatsuwheel loadersmall ( - wa120 / sk*)
Komatsu WB91R-2(S/N 91F20070-Up)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu WB91R-2 is a backhoe loader in the compact utility class, powered by a 4D106-1FA naturally aspirated diesel engine producing 67.7 kW (90.8 HP) gross power. Operating weight ranges from 7.5 to 8.58 metric tons (16,530 to 18,916 lbs) depending on configuration. Production years span the late 1990s through the early 2000s. It succeeded the WB91R-1 and was eventually replaced by the WB91R-5. Configurations offered include standard cab, canopy, and various front bucket and backhoe arm options.
Across generations, the WB91R-2 introduced electronic gear management for its full powershift transmission and improved hydraulic pump capacity to 165.0 LPM (43.6 GPM) compared to earlier models. The machine remains relevant in the used and parts market due to its robust 4D106-1FA engine, which is widely supported, and its common use in municipal and utility applications where compact size and versatility are critical. Parts availability is maintained through the extensive WB91R-2 serial range documentation.
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 WB91R-2(S/N 91F20070-Up) specifications
Engine
| Model | 4D106-1FA |
| Gross Power | 90.8 hp (67.7 kW) |
| Net Power | 82.5 hp (61.5 kW) |
| Displacement | 269.3 cu in (4413.0 cc) |
| Cylinders | 4 |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | 16530 lbs (7497.9 kg) |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | 19.35 ft (5.90 m) |
| Transport Width | 7.62 ft (2.32 m) |
| Transport Height | 12.01 ft (3.66 m) |
| Wheelbase | 7.14 ft (2.17 m) |
| Ground Clearance | 1.42 ft (0.43 m) |
Performance
| Travel Speed (Forward) | 40.1 km/h (24.9 mph) |
| Travel Speed (Reverse) | 40.1 km/h (24.9 mph) |
| Lift Capacity at Full Height | 4218.4 kg (9300 lbs) |
| Bucket Dig Force | 3569.8 kg (7870 lbs) |
| Bucket Breakout Force | 6080.6 kg (13405 lbs) |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | 34.4 gal (130.2 l) |
| Hydraulic System | 24.4 gal (92.4 l) |
| Engine Oil | 2.3 gal (8.7 l) |
| Cooling System | 4.8 gal (18.2 l) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
WB91R-2(S/N 91F20070-Up) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 8.7 l (2.3 gal) | Komatsu EO or API CD SAE 30 (ambient temp > -10°C); API CD SAE 10W or 20W (ambient temp < -10°C) |
| Cooling system | 18.2 l (4.8 gal) | Super-coolant AF-NAC |
| Fuel tank | 130.2 l (34.4 gal) | ASTM D975 No. 2 diesel (ambient temp > -10°C); ASTM D975 No. 1 diesel (ambient temp < -10°C) |
| Transmission/powertrain | 16.3 l (4.3 gal) | Komatsu TO or API CD SAE 10W-30 |
| Front axle | 8.3 l (2.2 gal) | Komatsu AXO or API CD SAE 80W-90 |
| Rear axle | 18.5 l (4.9 gal) | Komatsu AXO or API CD SAE 80W-90 |
| Hydraulic system and tank | 92.4 l (24.4 gal) | Komatsu HO or API CD SAE 10W-30 |
| Grease | N/A | Komatsu Utility genuine grease |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu WB91R-2(S/N 91F20070-Up) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the WB91R-2(S/N 91F20070-Up) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Komatsu KOWA fluid analysis at every 500-hour interval to monitor engine wear metals and hydraulic contamination. Sample hydraulic oil for particle count and viscosity changes. Test coolant SCA concentration at 500 hours to prevent scaling and corrosion in the 4D106-1FA engine block. Monitor transmission oil temperature during operation; excessive heat indicates filter clogging or internal wear. Track fuel consumption trends to detect injector issues early.
Corrective & Common Repairs
Address frequent hydraulic hose leaks at the loader arm joints and backhoe cylinder seals. Replace the hydraulic transmission filter whenever the transmission oil is changed at 1000 hours to prevent valve sticking. Inspect the 4D106-1FA engine valve clearance every 1000 hours; improper clearance causes power loss and increased fuel consumption. Check the full powershift transmission for slippage during gear changes. Replace worn front and rear axle differential seals to prevent oil contamination. Inspect the variable displacement axial piston pump for pressure relief valve leaks at 2700 psi.
Overhaul & Rebuild Points
Plan for major engine overhaul of the 4D106-1FA around 10,000-12,000 hours, focusing on piston rings and cylinder liners. Rebuild the hydraulic transmission converter and torque converter seals at 8,000 hours or if metal debris appears in oil samples. Inspect final reduction gears in the front and rear axles for pitting; replace oil at 1000 hours intervals to extend gear life. Check articulation steering pins for play; replace bushings if clearance exceeds limits. Evaluate the full powershift transmission clutch packs for wear during major service intervals.
Seasonal & Environment Servicing
In cold climates, use low-temperature hydraulic oil and ensure the coolant mixture provides adequate freeze protection for the 18.2 L (4.8 gal) system. Drain water from the fuel separator daily to prevent injector damage. In warm seasons, clean debris from the radiator and oil cooler fins to maintain operating temperature. Check the battery electrolyte levels and terminal tightness in extreme heat. Use synthetic biodegradable HEES lubricants in environmentally sensitive areas. Inspect ROPS/FOPS integrity annually for safety compliance.
WB91R-2(S/N 91F20070-Up) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| CA0139413 | Oil Filter | 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 → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
WB91R-2(S/N 91F20070-Up) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor failure | Broken sensor, wiring issue, or connector corrosion | Replace the speed sensor and verify voltage at the pin connector |
| CA111 | Internal engine controller fault | ECM hardware failure | Replace or reprogram the ECM |
| CA441 | Battery voltage too low | Weak battery or charging system failure | Replace the alternator or battery; check the voltage regulator |
| CA442 | Battery voltage too high | Faulty voltage regulator or alternator | Replace the alternator or battery; check the voltage regulator |
| AA10NX | Air cleaner clogging | Dirty or blocked air filter element | Replace the air filter |
| B@BCNS | Engine coolant overheating | Low coolant, blocked radiator, or fan belt failure | Check radiator fins, fan belt, and coolant level |
| B@HANS | Hydraulic oil overheating | Contaminated oil, clogged filter, or cooler fan issue | Change hydraulic filter and oil; check cooler fan |
| CA122 | Intake air pressure high voltage | Sensor malfunction or actual overpressure condition | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure low voltage | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration, engine load cycle, or operator misuse |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
WB91R-2(S/N 91F20070-Up) attachments & work tools
Standard Loader Bucket
The machine is equipped with a standard front loader bucket with a capacity of 1.03 m³ (1.35 cu yds) and a width of 231.9 cm (91.3 in). This bucket provides a breakout force of 13405.4 lbs (the OEM part reference.2 kg) and is designed for general material handling tasks.
Backhoe Bucket
The rear-mounted backhoe bucket has a capacity of 0.20 m³ (SAE) and provides a dig force of 7870.6 lbs. It achieves a maximum dig depth of 457.2 cm (180 in) and 548.6 cm (216 in) when extended.
Optional: 4-in-1 Bucket
A 4-in-1 bucket is listed as authorized optional equipment in the service manual. This tool combines the functions of a bucket, blade, and claw for versatile material handling and grading.
Optional: Pallet Forks
Pallet forks are available as authorized optional equipment. They allow the machine to handle palletized loads, expanding its utility beyond excavation and loading.
Optional: Telescopic Arm
A backhoe telescopic arm is listed as authorized optional equipment. This attachment increases the reach and depth capability of the rear digging apparatus.
Optional: Demolition Hammer Setup
The machine supports the installation of a demolition hammer via a specific arrangement detailed in the service manual. This requires appropriate hydraulic connections and mounting hardware.
Optional: Offset Device
An offset device is available for the backhoe, allowing the arm to swing laterally. This improves precision in tight spaces or along trenches.
Optional: Clamshell Bucket
A clamshell bucket can be installed on the backhoe for handling loose materials like gravel or sand. The service manual details the arrangement for its installation.
Optional: Manual Hydraulic Hammer
The machine is compatible with a manual hydraulic hammer. The service manual specifies the arrangement for its installation, requiring specific hydraulic flow and pressure settings.
Optional: Load Stabilizer System (LSS)
A Load Stabilizer System (LSS) is listed as non-compulsory optional equipment. This system helps stabilize loads during transport, improving safety and operator control.
Coupler/Mounting System
The service manual references 'Front Equipment Quick Coupling Devices' and 'Rear Equipment Rapid Coupling Device' as authorized optional equipment. These systems facilitate the rapid changeover between the loader bucket and backhoe attachments.
Hydraulic Kit Notes
Optional equipment such as the demolition hammer, clamshell, and manual hydraulic hammer require specific hydraulic arrangements. The service manual details the 'Arrangement For The Operation Of Optional Equipment With Unidirectional Oil Flow' and other hydraulic circuit modifications necessary for these tools.
Guarding Options
The machine includes guards for the engine protection casing and other critical components. The operation manual emphasizes that the machine must not be used without guards, and the engine protection casing must be closed before starting.
All WB91R-2(S/N 91F20070-Up) assemblies by section
Every catalogued assembly group for the Komatsu WB91R-2(S/N 91F20070-Up). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Control System
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Backhoe Control Levers
| 31***04 | Spacer | 8 |
| 31***12 | Connection L.H | 1 |
| 31***13 | Connection R.H | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Control System : Backhoe Control Pedal (Left Side)
| 31***62 | Bushing, Pedal | 1 |
| 31***63 | Pedal Support | 1 |
| 31***21 | Pedal | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Backhoe Control Pedal (Left Side)- Komatsu Layout Control
| 31***62 | Bushing, Pedal | 1 |
| 31***21 | Pedal | 1 |
| 31***56 | Pedal Support | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Backhoe Control Pedal (Right Side)
| 31***61 | Bushing, Pedal | 1 |
| 31***63 | Pedal Support | 1 |
| 31***20 | Pedal | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Backhoe Control Pedal (Right Side) - Komatsu Layout Control
| 31***61 | Bushing, Pedal | 1 |
| 31***20 | Pedal | 1 |
| 31***57 | Pedal Support | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Control System : Fuel Control Lever
| 31***48 | Command Boot | 1 |
| 31***57 | Complete Cable | 1 |
| 31***67 | Lever Block | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Fuel Control Pedal
| 31***81 | Support | 1 |
| 31***58 | Lever For Cable | 1 |
| 31***70 | Accelerator Pedal | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Outrigger Control Levers
| 31***48 | Command Boot | 2 |
| 31***57 | Clamping Plate, R.H | 1 |
| 31***58 | Clamping Plate, L.H | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Shovel Control Lever
| 31***04 | Spacer | 4 |
| 31***58 | Pressure -Boot | 1 |
| 31***21 | Pressure -Boot (Only For Germany) | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Shovel Control Lever (Bucket 4 In 1)
| 31***04 | Spacer | 4 |
| 31***58 | Pressure -Boot | 1 |
| 31***21 | Pressure -Boot (Only For Germany) | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Control System : Transmission Lever Control
| 31***52 | Lever | 1 |
| 80***74 | Bolt | 1 |
| 80***03 | Washer | 1 |
Engine
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Alternator
| YM***20 | Timer,Solenoid | 1 |
| YM***40 | Distance Piece | 1 |
| YM***40 | Screw | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Camshaft And Driving Gear
| YM***50 | Bearing, Thrust | 1 |
| YM***00 | Gear,Injection Pump Drive | 1 |
| YM***00 | Gear | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Cooling Water System
| YM***10 | Protector | 1 |
| YM***02 | Screw | 4 |
| YM***50 | Pulley | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Crankshaft And Piston
| YM***00 | Connecting Rod, Assembly | 4 |
| YM***80 | Gear, Ring | 1 |
| YM***10 | Bush,Idle Gear (Repair Part) | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Cylinder Block
| YM***00 | Screw | 18 |
| YM***20 | Screw | 10 |
| YM***40 | Bearing, Thrust (+0.25 mm) | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Cylinder Head
| 87***39 | Aspirated Engine | 1 |
| YM***70 | Cap Valve | 8 |
| YM***02 | Bolt | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Engine Stop Device
| YM***00 | Pin, Cotter | 2 |
| YM***02 | Nut | 1 |
| YM***10 | Support | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Exhaust Manifold And Silencer
| YM***02 | Screw | 2 |
| YM***02 | Nut | 6 |
| YM***01 | Gasket (Kit) | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Feed Pump
| YM***40 | Gasket | 4 |
| YM***60 | O-Ring | 2 |
| YM***00 | Screw | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Flywheel Housing And Oil Sump
| YM***02 | Screw | 26 |
| YM***20 | Oil Sump | 1 |
| YM***80 | Parallel Pin | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Fuel Injection Pump (1/2)
| YM***00 | Segment | 4 |
| YM***00 | Gasket Disc | 4 |
| YM***20 | Valve,Delivery | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Fuel Injection Pump (2/2)
| YM***40 | Gasket | 2 |
| YM***20 | Bearing,(Toyo) | 1 |
| YM***40 | Nut | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Fuel Injection Valve
| YM***00 | Nozzle | 4 |
| YM***02 | Bolt Plated | 1 |
| YM***20 | Spring | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Fuel Line (1/2)
| YM***91 | Bolt | 1 |
| YM***10 | Banjo Fitting | 1 |
| YM***80 | Screw | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Fuel Line (2/2)
| YM***02 | Screw | 1 |
| YM***22 | Center Bolt | 1 |
| YM***00 | Banjo Bolt | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Gasket Kit
| YM***00 | O-Ring (Kit) | 1 |
| YM***40 | O-Ring,Drain Plug | 1 |
| YM***01 | Gasket (Kit) | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Gear Housing
| YM***02 | Bolt Plated | 11 |
| YM***51 | Cap, Lub. Oil Supply | 1 |
| YM***02 | Screw | 6 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Generator
| YM***10 | Pulley | 1 |
| YM***60 | Spool & Housing | 1 |
| YM***20 | Bolt Kit | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Governor (1/2)
| YM***40 | Screw | 1 |
| YM***00 | Screw | 1 |
| YM***10 | Screw | 6 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Governor (2/2)
| YM***40 | Screw | 1 |
| YM***00 | Nut | 1 |
| YM***40 | Shim, 0.300 mm | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Lubricating Oil Line
| YM***81 | Retainer | 1 |
| YM***50 | Oil Pressure Transmitter | 1 |
| YM***02 | Seal,Ring (Kit) | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Lubricating Oil System
| YM***00 | O-Ring (Kit) | 1 |
| YM***30 | Shim, 1.000 mm | 1 |
| YM***00 | Plug | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Starting Motor
| YM***30 | Dust Cover Set | 1 |
| YM***71 | Brush Holder Ass'Y | 1 |
| YM***10 | Terminal Cover | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine : Suction Manifold
| YM***00 | Heather Air | 1 |
| YM***02 | Screw | 1 |
| YM***02 | Screw | 9 |
Engine Related Parts And Electrical System
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Air Filter
| 31***93 | Hose, Suction Air | 1 |
| 31***16 | Hose (Aspirated Engine) | 1 |
| 31***32 | Filter Support | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Artic Version
| 31***70 | Battery Cover | 1 |
| 31***60 | Battery Retainer | 1 |
| 80***86 | Washer | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Battery Detachment
| 31***88 | Terminal (+), Assembly | 1 |
| 31***10 | Switch Support | 1 |
| 80***66 | Bolt | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Electrical System (1/6)
| 31***57 | Support | 1 |
| 31***93 | Wiring Harness, Assembly | 1 |
| 80***08 | Bolt (Only With Cabin) | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Electrical System (2/6)
| 31***66 | Wiring Harness, Rear | 1 |
| 31***68 | Wiring, Electro-Valve Line | 1 |
| 31***95 | Wiring Harness, Front | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Electrical System (3/6)
| 31***69 | Battery Cover | 1 |
| 31***90 | Terminal (-), Assembly | 1 |
| 31***01 | Terminal(+), Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Electrical System (4/6)
| 31***01 | Number Plate Support | 2 |
| 80***86 | Washer | 2 |
| 80***27 | Screw | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Electrical System (5/6)
| 80***44 | Bolt | 1 |
| 80***47 | Bolt | 1 |
| 80***43 | Screw | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Electrical System (6/6)
| 31***69 | Wiring, Transmission Line | 1 |
| 31***00 | Acustic Alarm | 1 |
| 31***00 | Acustic Alarm Support | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Electrical System - Fuses
| 31***82 | Box, Assembly | 1 |
| 80***96 | Bolt | 2 |
| 80***33 | Screw | 5 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Engine Mounting Parts
| 31***62 | Right Support | 1 |
| 31***65 | Left Support | 1 |
| 31***89 | Motor Support | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Front Dashboard (2/2)
| 31***64 | Front Dashboard, Assembly | 1 |
| 31***00 | Front Instrument Board | 1 |
| 80***31 | Self-Tapping Screw | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Fuel Line
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Lateral Dashboard (1/2)
| 31***26 | Lateral Dashboard, Assembly (For Cabin) | 1 |
| 31***01 | Lateral Instrument Board | 1 |
| 80***31 | Self-Tapping Screw | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Lateral Dashboard (2/2)
| 31***54 | Switch | 1 |
| 31***55 | Switch | 1 |
| 31***56 | Switch | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Muffler
| 30***55 | Clamp (Aspirated Engine) | 4 |
| 31***53 | Hose | 1 |
| 31***55 | Stub Pipe | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Prefilter (Optional)
| 31***19 | Gasket | 1 |
| 31***43 | Hood | 1 |
| 31***36 | Gasket | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Radiator
| 31***11 | Gasket | 1 |
| 31***91 | Radiator Support | 2 |
| 31***92 | Protection | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Engine Related Parts And Electrical System : Radiator Tank
| 31***69 | Chamber | 1 |
| 31***94 | Upper Support | 1 |
| 31***83 | Hose | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Frame : Axle Lubricating Piping
| 39***45 | Tube | 1 |
| 50***15 | Union | 1 |
| 50***52 | Union | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Frame
| 31***56 | Frame Vertical Outrigger | 1 |
| 31***01 | Plate | 2 |
| 31***09 | Gasket | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle (2wd) (1/3)
| 20***22 | Front Axle, Assembly | 1 |
| CA***10 | Bushing | 1 |
| CA***30 | Spring Washer | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle (2wd) (2/3)
| CA***10 | Greaser Nipple | 2 |
| CA***95 | Jack | 1 |
| CA***11 | Fitting | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle (2wd) (3/3)
| CA***81 | Thrust Washer | 2 |
| CA***70 | Bearing | 4 |
| CA***40 | Pin | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle (4wd) (1/6)
| 20***19 | Front Axle, Assembly | 1 |
| CA***10 | Bushing | 1 |
| CA***35 | Bush | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle (4wd) (2/6)
| CA***10 | Greaser Nipple | 2 |
| CA***95 | Jack | 1 |
| CA***11 | Fitting | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle (4wd) (4/6)
| CA***09 | Bearing | 2 |
| CA***78 | Locking Plate | 2 |
| CA***61 | Differential Kit | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle (4wd) (5/6)
| CA***60 | Fork | 1 |
| CA***61 | Double Joint | 2 |
| CA***25 | Spider | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle (4wd) (6/6)
| CA***90 | Centering Bush | 16 |
| CA***70 | Bearing | 4 |
| CA***40 | Pin | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Axle Fixing (2wd)
| 31***00 | Front Support | 1 |
| 31***01 | Rear Support | 1 |
| 31***02 | Pin | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Front Propeller Shaft And Front Axle Fixing (4wd)
| 31***55 | Shaft | 1 |
| 31***00 | Front Support | 1 |
| 31***01 | Rear Support | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Handbrake And Rear Propeller Shaft
| 31***56 | Shaft | 1 |
| 31***75 | Assembly, Cable | 1 |
| 31***32 | Fasterner Cable | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Hydraulic Piping (Brake Line)
| 31***01 | Union | 2 |
| 31***52 | Tubo | 1 |
| 31***53 | Tube | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Frame : Hydraulic Piping (Transmission Cooling Line)
| 39***03 | Hose | 1 |
| 39***01 | Hose | 1 |
| 50***87 | Union | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Rear Axle (1/7)
| 20***10 | Rear Axle, Assembly | 1 |
| CA***11 | Oil Seal | 2 |
| CA***66 | Bolt | 22 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Frame : Rear Axle (3/7)
| CA***77 | Ring | 1 |
| CA***96 | Pin | 4 |
| CA***67 | Bearing | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Rear Axle (4/7)
| CA***41 | Shaft | 1 |
| CA***21 | O-Ring | 2 |
| CA***40 | Bush | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Rear Axle (5/7)
| CA***58 | O-Ring | 2 |
| CA***33 | Reaction Plate | 2 |
| CA***87 | Flange | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Rear Axle (6/7)
| CA***63 | Brakes Shaft | 2 |
| CA***61 | Bush | 2 |
| CA***52 | Spring | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Rear Axle (7/7)
| CA***90 | Centering Bush | 16 |
| CA***77 | Snap Ring | 2 |
| CA***99 | Coupling Bushing | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (1/11)
| 20***63 | Drive Shaft, Assembly | 1 |
| CA***90 | Pump Assembly | 1 |
| CA***66 | Oil Seal | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (10/11)
| CA***86 | Copper Washer | 1 |
| CA***12 | Valve Cover | 1 |
| CA***40 | Copper Washer | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (11/11)
| CA***71 | Flange | 1 |
| CA***69 | Flywheel Towing Plate | 1 |
| CA***50 | Spring Washer | 6 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (2/11)
| CA***70 | Valve Kit | 1 |
| CA***31 | O-Ring | 1 |
| CA***68 | Cover | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (3/11)
| CA***22 | Plug | 4 |
| CA***60 | Copper Washer | 4 |
| CA***23 | Plug | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (4/11)
| CA***90 | Seal Ring | 2 |
| CA***86 | Thrust Washer | 2 |
| CA***29 | Bearing | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (5/11)
| CA***86 | Thrust Washer | 1 |
| CA***33 | Gear | 1 |
| CA***60 | Bearing | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (6/11)
| CA***86 | Thrust Washer | 1 |
| CA***38 | Gear | 1 |
| CA***67 | Spacer | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (7/11)
| CA***01 | Ball | 3 |
| CA***00 | Sleeve | 1 |
| CA***03 | Spring | 3 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (8/11)
| CA***04 | Drive Fork 3-4 | 1 |
| CA***17 | Bolt | 1 |
| CA***93 | Bolt | 3 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (2wd) (9/11)
| CA***22 | Plug | 4 |
| CA***29 | O-Ring | 3 |
| CA***60 | Copper Washer | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (1/13)
| 20***58 | Drive Shaft, Assembly | 1 |
| CA***90 | Pump Assembly | 1 |
| CA***66 | Oil Seal | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (10/13)
| CA***12 | Valve Cover | 1 |
| CA***40 | Copper Washer | 1 |
| CA***26 | Electro-Valve Coil | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (11/13)
| CA***22 | Plug | 4 |
| CA***29 | O-Ring | 3 |
| CA***60 | Copper Washer | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (12/13)
| CA***22 | Plug | 1 |
| CA***60 | Copper Washer | 1 |
| CA***05 | Screw | 3 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (13/13)
| CA***71 | Flange | 1 |
| CA***69 | Flywheel Towing Plate | 1 |
| CA***50 | Spring Washer | 6 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (2/13)
| CA***70 | Valve Kit | 1 |
| CA***31 | O-Ring | 1 |
| CA***68 | Cover | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (3/13)
| CA***22 | Plug | 3 |
| CA***60 | Copper Washer | 3 |
| CA***68 | Breather Plug | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (4/13)
| CA***90 | Seal Ring | 2 |
| CA***86 | Thrust Washer | 2 |
| CA***29 | Bearing | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (5/13)
| CA***86 | Thrust Washer | 1 |
| CA***33 | Gear | 1 |
| CA***60 | Bearing | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (6/13)
| CA***86 | Thrust Washer | 1 |
| CA***73 | Gear | 1 |
| CA***38 | Gear | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (7/13)
| CA***01 | Ball | 3 |
| CA***00 | Sleeve | 1 |
| CA***03 | Spring | 3 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (8/13)
| CA***84 | Seal Ring | 1 |
| CA***63 | Snap Ring | 1 |
| CA***86 | Thrust Washer | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Transmission (4wd) (9/13)
| CA***04 | Drive Fork 3-4 | 1 |
| CA***17 | Bolt | 1 |
| CA***93 | Bolt | 3 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Wheels
| 31***50 | Front Rim | 2 |
| 31***51 | Rear Rim | 2 |
| 81***06 | Tyre, Front (12.5/80-18 10pr) | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Frame : Wheels (Optional)
| 31***59 | Rim W16l-26" | 2 |
| 31***63 | Rim 11x18'' Ny | 2 |
| 81***18 | Tyre (18.4-26 12pr) | 2 |
Guard And Operator'S Cab
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (1/11)
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (10/11)
| 80***67 | Bolt (Optional) | 4 |
| 80***56 | Bolt | 4 |
| 80***60 | Screw | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (11/11)
| 80***25 | Screw | 4 |
| 80***60 | Screw | 8 |
| 80***06 | Washer, Spring | 4 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (3/11)
| 80***70 | Bolt | 4 |
| 80***45 | Screw | 2 |
| 80***08 | Nut (With Stabilizers Only) | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (4/11)
| 31***41 | Cylinder | 2 |
| 31***42 | Spring | 4 |
| 31***43 | Pin | 4 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (5/11)
| 80***48 | Bolt | 4 |
| 80***64 | Screw | 4 |
| 80***44 | Screw | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (7/11)
| 80***64 | Screw | 2 |
| 80***64 | Self Taping Screw | 2 |
| 80***06 | Spring Washer | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (8/11)
| 31***03 | Canopy | 1 |
| 31***50 | Gasket | 7 |
| 31***94 | Front Gasket | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Cabin (9/11)
| 80***48 | Screw | 1 |
| 80***32 | Self Taping Screw | 8 |
| 80***56 | Self Taping Screw | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Covers (1/3)
| 31***54 | Hinge Linkage | 1 |
| 31***84 | Inspection Plug | 1 |
| 31***99 | Hood | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Covers (2/3)
| 31***00 | Front Closure | 1 |
| 31***26 | Support | 1 |
| 31***32 | Squab Panel | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Covers (3/3)
| 31***03 | Left Splash-Board (Cabin) | 1 |
| 31***04 | Right Splash-Board (Cabin) | 1 |
| 31***20 | Right Closure (Cabin) | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Front Splash-Board (Optionals)
| 31***50 | Splash-Board Support | 2 |
| 31***06 | Splash-Board | 2 |
| 36***59 | Plate | 8 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Heating System (1/2)
| 31***80 | Wall | 1 |
| 31***03 | Cock Support | 1 |
| 80***45 | Screw | 4 |
Komatsu : Wb91r-2(S/N 91f20070-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 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Guard And Operator'S Cab : Operator'S Seat
| 31***64 | Box | 1 |
| 31***66 | Box | 1 |
| 31***14 | Operator'S Seat Stand | 1 |
Hydraulic System Work Equipment
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Adjustable Guide
| 31***07 | Pin | 1 |
| 31***50 | Support | 1 |
| 31***51 | Stud Bolt Steering | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (1/8)
| 84***24 | Control Valve,Assembly | 1 |
| 84***68 | Inlet Element, Assembly | 1 |
| 84***69 | Block, Boom Control Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (2/8)
| 84***13 | Gasket Kit | 1 |
| 84***77 | Pressure Relief Valve | 1 |
| 84***78 | Regolatore Di Flusso | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (7/8)
| 84***74 | Gasket Kit, Secondary Valve | 1 |
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (8 Sections)
| 84***28 | Control Valve, Assembly | 1 |
| 84***68 | Inlet Element, Assembly | 1 |
| 84***69 | Block, Boom Control Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (8/8)
| 84***52 | Valve Kit | 1 |
| 84***53 | Solenoid | 1 |
| 84***54 | Valve, Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (For Deportable)
| 84***74 | Gasket Kit, Secondary Valve | 2 |
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Backhoe Control Valve (Telescopic)
| 84***74 | Gasket Kit, Secondary Valve | 2 |
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Control Valve (7 Section) (For Deportable)
| 84***27 | Control Valve, Assembly | 1 |
| 84***68 | Inlet Element, Assembly | 1 |
| 84***69 | Block, Boom Control Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Control Valve (7 Sections) (For Hammer) (1/2)
| 84***26 | Control Valve, Assembly | 1 |
| 84***68 | Inlet Element, Assembly | 1 |
| 84***69 | Block, Boom Control Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Control Valve (7 Sections) (For Hammer) (2/2)
| 84***74 | Gasket Kit, Secondary Valve | 2 |
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Control Valve (7 Sections) (For Jig Arm)
| 84***25 | Control Valve, Assembly | 1 |
| 84***62 | Tie Rods Kit | 1 |
| 84***68 | Inlet Element, Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Floor Board Hydraulic Tank
| 31***19 | Splash Guard | 1 |
| 31***76 | Hinge | 1 |
| 31***61 | Floor Board | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hammer Hydraulic Piping With Jig Arm (1/2)
| 31***21 | Bushing | 2 |
| 39***04 | Hose | 1 |
| 39***01 | Hose | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Arm Cylinder Line)
| 31***17 | Pin | 1 |
| 31***21 | Bushing | 2 |
| 39***67 | Pin | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Boom Cylinder Line)
| 31***11 | Pin | 1 |
| 31***41 | Buckle | 2 |
| 31***42 | Plate | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Boom Swing Cylinder Line)
| 31***00 | Support | 4 |
| 31***08 | Semibuckle | 8 |
| 39***62 | Pin | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Bucket Cylinder Line) (1/2)
| 31***21 | Bushing | 2 |
| 39***13 | Hose | 2 |
| 50***13 | Union | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Bucket Cylinder Line) (2/2)
| 31***58 | Plate | 1 |
| 31***05 | Hose-Clamp | 1 |
| 31***02 | Bracket | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Delivery Line)
| 20***90 | Pressure Take-Up | 1 |
| 31***71 | Pipe | 1 |
| 39***13 | Hose | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (1/3)
| 39***09 | Hose | 1 |
| 39***13 | Hose | 1 |
| 50***06 | Plug | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (2/3)
| 31***54 | Extension | 1 |
| 31***21 | Bushing | 2 |
| 39***06 | Hose | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Hammer Line) (3/3)
| 31***05 | Support R.H | 1 |
| 31***06 | Support L.H | 1 |
| 39***06 | Hose | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Jig Arm Cylinder Line)
| 31***21 | Bushing | 2 |
| 39***16 | Hose | 1 |
| 39***02 | Hose | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Locker Cylinder Line)
| 31***51 | Jack | 4 |
| 31***00 | Liner | 1 |
| 31***02 | Piston | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Oil Cooler And Return Line) (1/2)
| 31***62 | Pipe | 1 |
| 31***70 | Support | 1 |
| 31***14 | Union | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Oil Cooler And Return Line) (2/2)
| 31***17 | Union | 1 |
| 31***21 | Protection | 1 |
| 39***01 | Hose | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Shovel Tipping Cylinder Line) (With Return To Dig)
| 31***05 | Hose-Clamp | 1 |
| 31***07 | Gasket | 1 |
| 31***65 | Pin ? 50 | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Side Digging Boom Cylinder Line)
| 39***02 | Hose | 1 |
| 39***03 | Hose | 1 |
| 50***23 | Union | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Steering Line) (1/2)
| 20***90 | Pressure Take-Up | 1 |
| 30***38 | Retainer | 2 |
| 31***50 | Stud Bolt Steering | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Steering Line) (2/2)
| 39***01 | Hose | 1 |
| 39***01 | Hose | 2 |
| 50***05 | Union | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Suction Line)
| 20***70 | Plug (Only For Disconnecting Hammer) | 1 |
| 31***50 | Suction Flange | 1 |
| 31***53 | Tubo | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping (Vertical Outrigger Cylinder Line)
| 31***66 | Tube | 1 |
| 31***67 | Tube | 1 |
| 31***68 | Tube | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Piping(Arm And Bucket Cylinder Line)(For Side Digging Boom)
| 31***58 | Pipe | 1 |
| 31***57 | Pipe | 1 |
| 31***59 | Pipe, R.H | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Hydraulic Pump (1/2)
| 84***02 | Pump Assembly | 1 |
| 84***23 | Control Unit | 1 |
| 84***25 | Shaft | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (1/4)
| 84***30 | Shovel Control Valve,Assembly | 1 |
| 84***11 | Big Plug | 1 |
| 84***94 | Outlet Section, Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (2/4)
| 84***04 | Piston Kit | 1 |
| 84***08 | Spool Return Unit | 1 |
| 84***09 | Plug | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (3/4)
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
| 84***19 | Gasket Kit | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (4/4)
| 84***74 | Gasket Kit, Secondary Valve | 2 |
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (For Bucket 4 In 1) (1/5)
| 84***65 | Shovel Control Valve,Assembly | 1 |
| 84***11 | Big Plug | 1 |
| 84***63 | Floating Block, Shovel Lifting, Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (For Bucket 4 In 1) (3/5)
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
| 84***17 | Operating Kit | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (For Bucket 4 In 1) (4/5)
| 84***74 | Gasket Kit, Secondary Valve | 2 |
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (For Bucket 4 In 1) (With Return To Dig)
| 84***66 | Shovel Control Valve,Assembly | 1 |
| 84***11 | Big Plug | 1 |
| 84***63 | Floating Block, Shovel Lifting, Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (With Return To Dig) (1/4)
| 84***31 | Shovel Control Valve,Assembly | 1 |
| 84***11 | Big Plug | 1 |
| 84***63 | Floating Block, Shovel Lifting, Assembly | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (With Return To Dig) (2/4)
| 84***04 | Piston Kit | 1 |
| 84***08 | Spool Return Unit | 1 |
| 84***09 | Plug | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (With Return To Dig) (3/4)
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
| 84***17 | Operating Kit | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Shovel Control Valve (With Return To Dig) (4/4)
| 84***74 | Gasket Kit, Secondary Valve | 2 |
| 84***13 | Gasket Kit | 1 |
| 84***16 | Valve Kit | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Hydraulic System Work Equipment : Vertical Outrigger Cylinder
| 39***11 | Cylinder | 1 |
| 39***11 | Rod | 1 |
| 3F***06 | Piston | 1 |
Mark Plate
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Accessories For Germany (20 And 40 Km/H) (1/2)
| 31***53 | Arm For Right Mirror | 1 |
| 31***14 | Oil Tank | 1 |
| 31***15 | Gas Oil Tank | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Accessories For Germany (20 And 40 Km/H) (2/2)
| 31***68 | Quick Hydraulic Coupling For Buket | 1 |
| 31***54 | Bucket 4 In 1, Assembly | 1 |
| 31***55 | Arm | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Accessories For Germany (Only 20 Km/H Version)
| 81***81 | Plate, Max. Speed 20 Km/H (Germany) | 3 |
| 88***36 | Knob Cover | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Accessories For Germany (Only 40 Km/H Version)
| 31***01 | Front Number Plate Support | 1 |
| 31***02 | Number Plate Support | 1 |
| 31***00 | Plate, 40 Km/H Speed | 3 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Equipment (For Road Circulation)
| 31***51 | Fastener | 1 |
| 31***26 | Pin | 1 |
| 31***50 | Protection | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Equipment For Road Germany
| 80***82 | Bolt | 8 |
| 80***01 | Spring Washer (With Stabilizers Only) | 8 |
| 82***28 | Warning Triangle | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Stickers - Warning Plate (1/3)
| 31***01 | Plate, Lubricating Points | 1 |
| 31***23 | Plate, Raising Capacity (Standard/Telesc.) | 1 |
| 31***24 | Plate, Raising Capacity (Side Digging+Std/Telesc.) | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Stickers - Warning Plate (2/3)
| 31***22 | Plate, Speed Scheme (Only For Germany) | 1 |
| 31***12 | Plate, Hydraulic Transmission Scheme | 1 |
| 31***40 | Plate, Arm Controls | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Stickers - Warning Plate (3/3)
| 31***35 | Plate, Multifunctional Control | 1 |
| 31***04 | Plate, ''Air Recycle'' | 1 |
| 35***28 | Plate, Shovel Lock (Only For Germany) | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Mark Plate : Tools
| 82***43 | Filter Cartridge Wrench | 1 |
| 82***50 | Box Wrench (27 mm) | 1 |
| 82***52 | Box Wrench (32 mm) | 1 |
Work Equipment
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Arm And Bucket
| 20***90 | Pin | 2 |
| 20***69 | Tie-Rod | 1 |
| 31***52 | Corner, R.H | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Arm Cylinder
| 39***11 | Bushing | 1 |
| 39***13 | Cylinder | 1 |
| 39***11 | Rod | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Arm Cylinder (For Side Digging Boom)
| 39***11 | Bushing | 1 |
| 39***03 | Cylinder, Assembly | 1 |
| 39***11 | Cylinder | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Blade : Unit_02_of_02
| 31***50 | Blade | 1 |
| 80***99 | Bolt | 3 |
| 80***11 | Nut | 3 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Blade : Unit_01_of_02
| 31***50 | Blade | 1 |
| 80***13 | Bolt | 8 |
| 80***12 | Nut | 8 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Boom Cylinder
| 31***03 | Pipe Stopper | 1 |
| 39***07 | Plug | 1 |
| 39***14 | Bushing | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Boom Swing Cylinder
| 31***02 | Cylinder | 1 |
| 39***58 | Bushing | 1 |
| 39***12 | Cylinder, Right | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Bracket And Boom (1/2)
| 31***51 | Support | 1 |
| 31***52 | Bracket | 1 |
| 31***56 | Bracket | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Bracket And Boom (2/2)
| 31***55 | Support | 1 |
| 31***56 | Fastener | 1 |
| 31***57 | Cylinder | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Bucket - 4 In 1
| 31***54 | Tooth | 8 |
| 31***77 | Pin | 2 |
| 31***26 | Protection | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Bucket - 4 In 1 - Fast Coupling
| 31***54 | Tooth | 8 |
| 31***77 | Pin | 2 |
| 31***26 | Protection | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Bucket Cylinder
| 39***11 | Cylinder | 1 |
| 39***12 | Shaft | 1 |
| 39***12 | Piston | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Fork (For Bucket 4 In 1)
| 31***50 | Rod | 2 |
| 31***51 | Fork | 2 |
| 31***09 | Pin | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Fork (For Bucket)
| 31***51 | Bucket | 1 |
| 31***53 | Bucket With Fork, Assembly | 1 |
| 31***51 | Fork | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Hammer M50 (2/2)
| 82***54 | Fitting | 1 |
| 82***55 | Retainer | 2 |
| 82***56 | Pin | 2 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Hammer M60 (2/2)
| 82***54 | Fitting | 2 |
| 82***58 | Spring | 2 |
| 82***61 | Adjuster Shim | 10 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Jack (Quick Coupling For Bucket) (Optional)
| 20***19 | Cylinder | 1 |
| 50***13 | Piston | 2 |
| 50***14 | Piston Rod | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Jig Arm
| 20***02 | Lever, R.H | 1 |
| 20***03 | Lever, L.H | 1 |
| 31***00 | Pin | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Jig Arm Cylinder : Unit_02_of_02
| 31***56 | Clamp | 1 |
| 31***53 | Pipe | 1 |
| 31***54 | Pipe | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Quick Hydraulic Coupling For Bucket (Optional)
| 20***82 | Jack | 1 |
| 31***59 | Total | 1 |
| 31***47 | Closure | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Quick Mechanical Coupling For Bucket (Optional)
| 31***59 | Total | 1 |
| 31***61 | Lever, Assembly | 1 |
| 31***67 | Clousure | 1 |
Komatsu : Wb91r-2(S/N 91f20070-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 : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Shovel Bucket And Arm
| 31***54 | Tooth | 8 |
| 31***65 | Pin ? 50 | 2 |
| 31***50 | Arm | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Shovel Dumping Cylinder
| 39***13 | Bushing | 1 |
| 39***13 | Cylinder Head | 1 |
| 39***12 | Cylinder | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Shovel Lifting Cylinder
| 39***13 | Bushing | 1 |
| 39***11 | Cylinder Head | 1 |
| 39***12 | Cylinder | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Side Digging Boom
| 20***79 | Pin | 1 |
| 20***30 | Articulation | 1 |
| 20***75 | Support | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Side Digging Boom Cylinder
| 20***40 | Side Digging Boom Cylinder, Assembly | 1 |
| 20***20 | Cylinder | 1 |
| 20***80 | Piston Rod | 1 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Vertical Outrigger
| 20***16 | Outrigger | 2 |
| 31***53 | Plate | 4 |
| 31***50 | Foot | 2 |
Komatsu : Wb91r-2(S/N 91f20070-Up) : Work Equipment : Vertical Outrigger (With Rubber)
| 20***16 | Outrigger | 2 |
| 20***52 | Rubber (Optional) | 2 |
| 31***53 | Plate | 4 |
WB91R-2(S/N 91F20070-Up) serial number reference
The PIN plate is located on the front frame, on the right-hand side of the articulation joint. Read the prefix as the first three characters of the serial number stamped on the plate (e.g., '91F').
| Prefix | Identifies | Notes |
|---|---|---|
| 91F | WB91R-2 | Serial range 91F20070-Up. This prefix identifies the WB91R-2 backhoe loader configuration. The engine fitted varies by configuration/series: sources cite the 4D106-1FA (gross power 90.8 hp) and the 4D106-2SFA (maximum power 61 kW at 2200 rpm). The 4D106-2SFA is explicitly linked to the WB91R-2 91F20250 and up range in the Operation & Maintenance Manual WEAM002304. The 4D106-1FA is cited in general specs for the WB91R-2 family. Verify engine type with your dealer for the exact 91F20070-Up unit. |
Frequently asked questions
What engine does the WB91R-2 use?
The WB91R-2 uses a Komatsu 4D106-1FA naturally aspirated diesel engine with 4 cylinders and 4413.0 cc (269.3 cu in) displacement.
What is the operating weight?
Operating weight varies by configuration, ranging from 7.5 to 8.58 metric tons (16,530 to 18,916 lbs).
What model replaced the WB91R-2?
The WB91R-2 was succeeded by the WB91R-5 in Komatsu's backhoe loader lineup.
What WB91R-2(S/N 91F20070-Up) owners discuss
What engine powers the WB91R-2(S/N 91F20070-Up) and what are its power specifications?
The machine uses the Komatsu 4D106-2SFA diesel engine. It delivers a maximum power of 61 kW at 2200 rpm and a maximum torque of 310 Nm at 1500±100 rpm. Gross power is rated at 90.8 hp. Variations in net horsepower exist depending on the specific regional emissions configuration installed on the unit. Have your dealer verify the exact engine rating plate for the specific serial number.
What are the common hydraulic system behaviors and maintenance requirements for this model?
The hydraulic pump flow capacity is 43.6 gpm. The system requires hydraulic oil changes at operating temperature to ensure proper drainage of suspended particles. The hydraulic transmission filter must be replaced every time the transmission oil is changed. Operators should monitor for internal leakage if hydraulic functions become weak when the oil reaches operating temperature, as viscosity loss can expose worn pump or valve components.
What are the typical undercarriage and axle wear patterns for this backhoe loader?
The front and rear axials require differential and final reduction gear oil changes every 1000 hours. Wear patterns often involve the final reduction gears and differential seals. Mechanics should check for oil leaks at the drain and level plugs. Proper oil levels are critical; overfilling or underfilling the final reduction gears can lead to premature bearing failure.
What electrical or sensor issues are commonly reported for Komatsu utility machines of this era?
Komatsu utility machines of this generation rely on electronic control systems. Common issues include intermittent starting, dashboard display failures, and random shutdowns caused by unstable power supplies or faulty sensors. Owners should inspect battery terminals, engine and chassis grounds, and the main starter cable if starting issues occur.
What is the standard maintenance interval for engine valve clearance checks on this machine?
Checking and adjusting the engine valve clearance requires special tools and is not a standard field service item. This operation must be carried out by a Komatsu Utility Dealer.
What fuel and lubricant specifications should be used for this machine?
The machine uses diesel oil. For ambient temperatures above -10°C, use ASTM D975 no. 2 diesel oil. For temperatures below -10°C, use ASTM D975 no. 1 diesel oil. Hydraulic and transmission systems require Komatsu EO or equivalent high-quality hydraulic oil.
What specific items must be checked when buying a used WB91R-2(S/N 91F20070-Up)?
Verify the exact serial number against the correct service manual (WEAM002304 or WEBM000400 series) as specifications vary by serial break. Check the hydraulic transmission oil level and condition while the engine is at operating temperature (approx. 50°C). Inspect the front and rear axle differential and final reduction gear oil for metal particles or water contamination. Test all hydraulic functions for speed and strength both cold and hot to identify internal leakage.
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 WB91R-2(S/N 91F20070-Up). Related factory variants of the same model family:
WB91R-2(S/N 91F20145-Up)WB91R-2(S/N 91F20127-Up)WB91R-2(S/N 91F20001-Up)
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