Komatsuwheel loadersmall ( - wa120 / sk*)
Komatsu WA120-3L(S/N A30001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu WA120-3L (S/N A30001-UP) is a compact wheel loader in the 10-ton class, manufactured from 1999 to 2001. It is powered by the Komatsu S4D102E-1 diesel engine, delivering approximately 84.5 hp. The machine weighs approximately 8.2 tons (18,000 lb) and features a bucket capacity ranging from 1.3 to 1.7 m³ (1.7 to 2.25 yd³). It succeeded the WA120-1 series and was followed by the WA120-5. Configurations included standard and batcher variants, designed for aggregate handling, municipal work, and light construction.
The WA120-3 series introduced a more robust powertrain and refined hydraulic system compared to the WA120-1, addressing durability needs in high-cycle applications. Today, it remains relevant in the used market due to its simple mechanical controls and widely available S4D102E-1 engine components. The machine's compact footprint and articulated steering make it a staple in confined job sites, while its proven reliability ensures a steady demand for replacement parts and service.
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 WA120-3L(S/N A30001-UP) specifications
Engine
| Model | 6D95L |
| Gross Power | 63 hp (47 kW) |
| Power Measured At | 2400 rpm |
| Displacement | 298.5 cu in (4.9 L) |
| Cylinders | 4 |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | 16953.6 lb (7690 kg) |
| Static Tipping Weight | 13889.2 lb (6300 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 (With Bucket On Ground) | 19.9 ft (6065 mm) |
| Transport Width (Over Tires) | 7.39 ft (2250 mm) |
| Transport Height (To Top Of Cab) | 10.06 ft (3065 mm) |
| Wheelbase | 8.54 ft (2600 mm) |
| Ground Clearance | 1.28 ft (390 mm) |
| Hinge Pin Max Height | 11.32 ft (3450 mm) |
| Reach At Max Lift And Dump | 3.24 ft (985 mm) |
| Dump Clearance At Max Raise | 8.83 ft (2690 mm) |
Performance
| Max Speed - Forward | 21.5 mph (34.5 km/h) |
| Max Speed - Reverse | 21.8 mph (35 km/h) |
| Breakout Force | 13490 lb (60.01 kN) |
| Rear Axle Oscillation | 24 degrees |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | 35.2 gal (133 L) |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu WA120-3L(S/N A30001-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 WA120-3L(S/N A30001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA oil analysis at every 500-hour interval to monitor engine wear metals and hydraulic contamination. Check coolant SCA levels at 500 hours to prevent liner cavitation in the S4D102E-1 engine. Monitor transmission oil condition at 1,000 hours to detect early gear wear. Track hydraulic oil particle count to maintain ISO cleanliness standards. Analyze axle oil for gear tooth wear. Use KOMTRAX telematics to track load cycles and engine hours for accurate interval scheduling.
Corrective & Common Repairs
Address frequent hydraulic hose leaks at the boom and stick cylinders by inspecting fittings during daily checks. Replace worn steering pins and bushings to prevent chassis misalignment and tire scrubbing. Repair or replace the S4D102E-1 fuel injectors if rough idling or black smoke occurs. Fix turbocharger V-band clamp leaks to restore boost pressure. Replace worn brake pads and linings to maintain stopping power. Inspect and replace cracked radiator fins to prevent overheating.
Overhaul & Rebuild Points
Rebuild the transmission at 10,000 hours or when slippage exceeds specifications. Overhaul the S4D102E-1 engine at 15,000 hours or when compression drops below limits. Rebuild the hydraulic pump and control valve spools if flow rates fall below 80% of new specifications. Replace final drive planetary gears and seals when oil contamination exceeds acceptable levels. Rebuild the torque converter if overheating persists after cooler service. Inspect and replace worn axle shafts if vibration is detected.
Seasonal & Environment Servicing
Switch to lower viscosity engine oil and hydraulic fluid for cold weather operation to ensure proper flow. Install block heaters and coolant warmers for temperatures below -10°C. Clean radiator and oil cooler fins frequently in dusty environments to prevent overheating. Use high-temperature grease for pivot points in hot climates. Inspect tires for cuts and abrasions in rocky terrain. Drain fuel water separator daily in humid conditions to prevent microbial growth.
WA120-3L(S/N A30001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6732-71-6210 | Head, Fuel Filter | Fuel system service | Check fitment → |
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 207-04-A1100 | Cartridge, Fuel Filter | Fuel system service | Check fitment → |
| 6732-21-5530 | Cartridge, Engine Oil Filter | Lubrication service | Check fitment → |
| 6735-71-6150 | Adapter, Filter Head (M16x1.50 Both Ends) | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
WA120-3L(S/N A30001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E10 | Engine controller power failure or engine control drive system circuit malfunction. | Faulty ECM power connections, blown fuses, or ground wire issues. | Inspect ECM power connections, fuses, and ground wires. |
| E11 | Engine control system failure resulting in reduced output power to protect the engine. | Coolant overheating, low oil pressure, or air filter blockage. | Check coolant temperature, oil pressure, and air filter condition. |
| CA111 | Engine controller (ECM) critical internal failure. | Internal ECM hardware fault. | Replace or reprogram the ECM. |
| CA115 | Engine speed sensor and backup speed sensor failure. | Broken sensor, wiring issue, or connector corrosion. | Replace the speed sensor and verify voltage at the pin connector. |
| CA234 | Engine overspeed. | Throttle calibration error, engine load cycle issue, or operator misuse. | Verify throttle calibration and engine load cycle. |
| CA441 | Battery voltage too low. | Weak battery, faulty alternator, or voltage regulator issue. | Replace the alternator or battery; check the voltage regulator. |
| CA442 | Battery voltage too high. | Faulty voltage regulator or alternator overcharging. | 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. | Radiator blockage, fan belt failure, or low coolant level. | Check radiator fins, fan belt, and coolant level. |
| AB00KE | Charging voltage is too low. | Alternator malfunction or loose drive belt. | Replace the alternator or tighten the belt. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
WA120-3L(S/N A30001-UP) attachments & work tools
Standard Buckets
General-purpose and light material buckets are the primary work tools for this size class. Factory specifications list a standard heaped capacity of 1.84 cubic yards (1.4 cubic meters) and a struck capacity of 1.57 cubic yards (1.2 cubic meters). Bucket width is specified at 7.85 feet (2390 mm) with a breakout force of 13,490 pounds (60.01 kN). Bucket capacities for this model class generally range from 1.6 to 1.9 cubic yards depending on the specific configuration.
Specialty Buckets
Specialized buckets include rock buckets and high-lift variants. A specific WA120-3 Batcher configuration is documented with a heaped capacity of 1.9 cubic yards and an engine output of 84.5 hp. Other bucket capacities for the WA120-3 series are noted to range from 1.7 to 2.25 cubic yards (1.3 to 1.7 cubic meters) across different configurations.
Couplers and Mounting Systems
The machine utilizes a standard front loader bucket coupler system compatible with the WA120 series. Aftermarket parts catalogs list couplers and hydraulic kits as available attachment components for the WA120-3L. The specific coupler type is not detailed in the source text, but hydraulic kits are required for powered attachments.
Hydraulic Kits and Attachments
Hydraulic kits are listed as available attachment components for the WA120-3L to support powered work tools. The base machine hydraulic system features a pump flow capacity of 30.4 gallons per minute. Specific hydraulic kit part numbers are not provided in the source text.
Factory Configurations and Guarding
The WA120-3L (S/N A30001-Up) is equipped with a Komatsu S4D102E-1 engine. Factory specifications include a ROPS (Roll-Over Protective Structure) cab. The machine is designed for applications such as loading aggregate, sand, and gravel into trucks and conveyors. Guarding options are not explicitly detailed in the source text, but the cab structure is specified as ROPS.
All WA120-3L(S/N A30001-UP) assemblies by section
Every catalogued assembly group for the Komatsu WA120-3L(S/N A30001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Accessory
Komatsu : Wa120-3l(S/N A30001-Up) : Accessory : Fig No. V0300-01a0 Tools
Cooling System
Komatsu : Wa120-3l(S/N A30001-Up) : Cooling System : Fig No. C0110-01a0 Radiator
| 01***20 | Capscrew - M10 | 8 |
| 07***28 | Valve Assembly, Drain | 1 |
| 41***60 | O-Ring | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Cooling System : Fig No. C0110-01a1 Radiator Mounting
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***65 | Bolt,(Used With Pin Puller) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Cooling System : Fig No. C0110-01a2 Radiator Piping
| 07***28 | Hose,(See Fig.0411-11) | 1 |
| 07***67 | Clamp, Hose | 2 |
| 07***59 | Clamp,See Fig. K4010-05a0 | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Cooling System : Fig No. C0310-01a0 Fan Guard
| 01***20 | Bolt | 5 |
| 01***80 | Bolt,(With Corrosion Resistor) | 1 |
| 01***40 | Bolt,(Shim 3-Piece) | 1 |
Electrical System
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0110-01a0 Batteries And Cables
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 08***31 | Cap, Terminal Cover | 4 |
| 12***H1 | Battery, Wet | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0120-01a0 Battery Box
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 6 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0120-02a0 Rear Stop And Tail Lamp
| 01***35 | Screw, Mount Lens | 4 |
| 01***16 | Bolt, Mount Solenoid Valve | 4 |
| 01***16 | Bolt - Starting Motor Ground Cable | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0200-01a0 Main Harness Front Frame
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 4 |
| 04***11 | Clamp, Vinyl | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0200-02a0 Main Harness Rear Frame
| 01***16 | Bolt - Seat And Tether Belt Mounting | 2 |
| 01***08 | Screw, Terminal | 2 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0201-01a0 Electrical Ecss Wiring
| 01***12 | Bolt,(See Fig. K0210-16a0) | 2 |
| 08***00 | Diode,(With Air Conditioner) | 2 |
| 08***10 | Clip, Brake Line To Front Axle | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0201-01a1 Electrical Ground Drive Steering
| 30***C2 | Straps, Tie | 8 |
| 41***50 | Wiring Harness,Transmission | 1 |
| 41***60 | Wiring Harness | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0260-01a0 Electrical Instrument
| 01***12 | Bolt,(See Fig. K0210-16a0) | 1 |
| 13***H1 | Switch, Starting (With Cover For Key Hole) | 1 |
| 13***H1 | Nut, Key Switch | 6 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0300-01a0 Front Light
| 01***12 | Screw,Sems | 8 |
| 01***25 | Screw - Antenna Mounting | 4 |
| 01***30 | Bolt, Mounting - Front Hand Rails | 6 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0400-01a0 Alternator
| 12***22 | Nut-Hex Mach, 8-32 Znd 1 | 5 |
| 12***H1 | Bearing, Ball | 1 |
| 12***H1 | Nut, Hex - Tighten To 70-80 Ft/Lbs Wet | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Electrical System : Fig No. E0400-02a0 Starter Motor
| 13***91 | Motor, Starting (Service) | 1 |
| 13***H1 | Housing Assembly With Field Coil | 1 |
| 13***H1 | Boot, Terminal | 1 |
Engine
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Air Fuel Control Plumbing
| 67***40 | Bolt (M8-1.25x25) | 1 |
| 67***10 | Nut, Hex Flange (M8-1.25) | 1 |
| 67***50 | Elbow, Male Adapter (1/8 Npt) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Alternator Belt Tensioner
| 67***50 | Bracket, Belt Tensioner | 1 |
| 67***60 | Bolt, Mounting (M8-1.25x25) | 1 |
| 67***30 | Tensioner, Alternator Belt | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Alternator Mounting
| 67***60 | Bolt, Mounting (M8-1.25x25) | 3 |
| 67***20 | Bolt, Flange (M8-1.25x20) | 1 |
| 67***30 | Bolt (M12x1.75x150) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Cam Follower Cover
| 67***20 | Bolt, Mounting (M8-1.25x16) | 4 |
| 67***10 | Cover, Push Rod | 1 |
| 67***61 | Gasket, Push Rod Cover | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Camshaft
| 67***11 | Camshaft | 1 |
| 67***20 | Support, Camshaft Thrust | 1 |
| 67***31 | Gear, Camshaft | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Connecting Rod And Piston
| 67***10 | Pin, Piston | 4 |
| 67***01 | Engine Connecting Rod Assembly | 4 |
| 67***31 | Bushing | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Crankshaft
| 67***50 | Gear, Crankshaft | 1 |
| 67***00 | Set, Main Bearing - 1.00mm Over | 1 |
| 67***00 | Set, Main Bearing - 0.75mm Over | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Crankshaft Pulley
| 67***10 | Pulley, Crankshaft | 1 |
| 67***20 | Bolt (M12x1.25x36) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Cylinder Block
| 62***10 | Seal, O-Ring (M10-1.00) | 1 |
| 67***30 | Block Assembly, Cylinder | 1 |
| 67***10 | Plug, Pipe (1/2-14 Npt) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Cylinder Head
| 67***20 | Cylinder Head Assembly | 1 |
| 67***51 | Gasket, Cylinder Head | 1 |
| 67***10 | Bolt, Mounting (M12x1.75x70) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Dipstick
| 67***40 | Dipstick | 1 |
| 67***30 | Cartridge, Engine Oil Filter | 2 |
| 67***50 | Tube, Oil Gauge | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Drain Tube Connection - Fuel Pump
| 67***80 | Washer, Sealing (14mm) | 2 |
| 67***70 | Connector, Banjo | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Engine Assembly
| 41***00 | Engine, Complete And Service | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Engine Vent Connection
| 67***10 | Coupling, Plain Hose | 1 |
| 67***20 | Valve, Check (Jiggle) | 1 |
| 67***40 | Bushing, Reducing Pipe | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Exhaust Connection
| 67***20 | Clamp,Turbocharger Outlet Pipe | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fan Drive
| 67***30 | Bolt, Hex Cap (M8-1.25x30) | 2 |
| 67***30 | Pulley, Fan | 1 |
| 67***40 | Bolt (M10x1.50x20) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Flywheel
| 67***20 | Washer, Plain (M12) | 8 |
| 67***30 | Bolt (M12x1.25x32) | 8 |
| 67***80 | Gear, Flywheel Ring | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Flywheel Housing
| 67***20 | Plug, Pipe (3/4 Nptf) | 1 |
| 67***10 | Seal,Oil (K2) | 1 |
| 67***30 | Plate, Cover | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Front Crank Seal - Debris Shield
| 67***10 | Shield, Dust | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Front Gear Cover
| 67***20 | Seal, Front Oil (W/Application Tool) | 1 |
| 67***40 | Pin, Timing | 1 |
| 67***50 | Ring, Retaining | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Front Gear Train Accessory Drive Cover
| 67***80 | Gasket, Accessory Drive Cover | 1 |
| 67***10 | Plate, Accessory Drive Cover | 1 |
| 67***30 | Bolt, Flange Head (M12-1.75x25) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fuel Filter
| 67***70 | Washer, Sealing | 2 |
| 67***30 | Nut, Jam (M16x1.50 Thd) | 1 |
| 67***10 | Head, Fuel Filter | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fuel Injector
| 67***50 | Seal, Rectangular Ring | 1 |
| 67***30 | Seal, Banjo Connector (6.2 mm) | 1 |
| 67***00 | Fuel Injector Assembly | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fuel Lift Pump
| 67***70 | Washer, Sealing | 2 |
| 67***40 | Tube, Fuel | 1 |
| 67***60 | Bolt, Mounting (M8-1.25x25) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fuel Plumbing
| 67***60 | Bolt (M8-1.25x25) | 2 |
| 67***20 | Manifold, Fuel | 1 |
| 67***10 | Tube, Fuel Injector | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fuel Plumbing Filter To Fuel Pump
| 67***80 | Washer, Sealing (14mm) | 2 |
| 67***20 | Screw, Banjo Connector (M14x1.50x26) | 1 |
| 67***80 | Tube, Fuel | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fuel Pump
| 67***60 | Pump, Fuel Injection | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fuel Pump Coupling
| 67***20 | Tee, Female Branch | 1 |
| 67***30 | Plug, Pipe (1/8 Nptf) | 1 |
| 67***10 | Elbow, Male Adapter (1/8 Nptfx7/16-20(90)) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Fuel Shutoff Valve
| 67***50 | Nut, Lock (M5x0.8) | 1 |
| 67***60 | Washer, Plain | 1 |
| 67***60 | Bolt (M16x1.50x12) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Gasket Sets
| 67***90 | Set, Upper Engine Gasket - Standard | 1 |
| 67***20 | Seal, Front Oil (W/Application Tool) | 1 |
| 67***50 | Washer, Sealing (8.0mm) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Intake Air Heater
| 67***11 | Gasket,Air Intake Heater | 1 |
| 67***10 | Harness, Wiring | 1 |
| 67***20 | Heater, Engine | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Intake And Exhaust Manifold
| 07***08 | Plug,(Without Auto Priming System) | 1 |
| 67***30 | Connection, Air Crossover | 1 |
| 67***10 | Plug, Pipe (1/2-14 Npt) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Lifting Bracket
| 67***20 | Bolt (M12x1.75x30) | 2 |
| 67***10 | Bracket, Lifting | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Lubricating Oil Cooler
| 67***50 | Valve, Pressure Relief | 1 |
| 67***30 | Plug, Pipe (1/8 Nptf) | 1 |
| 67***20 | O-Ring,Oil Pressure Plug | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Lubricating Oil Pump
| 67***11 | Pump, Lubricating Oil | 1 |
| 67***20 | Bolt (M8x1.25x30) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Mechanical Tach Drive Cover
| 67***90 | Cover, Mechanical Tach Drive | 1 |
| 67***20 | Seal, Rectangular Ring | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Noise Panel
| 67***50 | Plate, Cylinder Block Stiffener | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Oil Fill Port
| 67***10 | Tube, Oil Filler | 1 |
| 67***30 | Bolt, Flange Head (M12-1.75x25) | 2 |
| 67***30 | Cap, Oil Filler | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Oil Pan
| 67***40 | Pan, Oil | 1 |
| 67***70 | Washer, Sealing (22.2 mm) | 1 |
| 67***10 | Bolt, Mounting (M8-1.25 X 25) | 28 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Rocker Levers
| 67***40 | Bolt | 4 |
| 67***10 | Rod, Push | 8 |
| 67***60 | Washer, Plain (M19) | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Starting Motor Mounting
| 67***20 | Bolt, Mounting (M10x1.50x35) | 3 |
| 67***80 | Gasket, Starter | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Thermostat And Housing
| 67***10 | Plug, Pipe (1/2-14 Npt) | 1 |
| 67***70 | Bolt, Mounting (M8x1.25x90) | 2 |
| 67***10 | Plug, Expansion (17.73 mm) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Turbocharger
| 67***10 | Stud ((M10x1.50 (Both Ends) X42)) | 4 |
| 67***20 | Nut (M10x1.50) | 4 |
| 67***40 | Gasket, Turbocharger | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Turbocharger Plumbing
| 67***40 | Connection Assembly | 1 |
| 67***60 | Hose, Flexible | 1 |
| 67***30 | O-Ring,Turbocharger Drain | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Valve Covers
| 67***30 | Bolt (M8x1.25x25) | 4 |
| 67***81 | Gasket, Valve Cover | 4 |
| 67***20 | Cover, Valve | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Valve Tappet
| 67***12 | Tappet, Valve | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Water Inlet Connection
| 67***10 | Plug, Pipe (1/2-14 Npt) | 2 |
| 67***20 | Bolt (M10-1.50x75) | 3 |
| 67***30 | Seal,Water Inlet Connection | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Water Outlet Connection
| 67***60 | Bolt, Mounting (M8-1.25x25) | 1 |
| 67***20 | Gasket, Connection | 1 |
| 67***30 | Connection, Water Outlet | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine : Water Pump
| 67***70 | Bolt (M8-1.25x22) | 2 |
| 67***01 | Kit, Water Pump | 1 |
| 67***20 | Seal, Rectangular Ring | 1 |
Engine Related Parts
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-01a0 Engine Wiring
| 01***10 | Bolt - Relay And Flasher Mounting | 2 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 5 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-03a0 Oil Drain
| 01***75 | Bolt - Mount 1st Clutch Housing | 1 |
| 01***11 | Nut (Welded) | 1 |
| 01***45 | Washer,(For Quick Shift) (Mitsubishi) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-04a0 Air Cleaner Connections
| 01***05 | Capscrew | 2 |
| 01***60 | Bolt, Mounting | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-04a1 Air Cleaner
| 09***07 | Plate? Instruction,Air Cleaner | 1 |
| 60***50 | Element Assembly, Complete | 1 |
| 60***40 | Element Assembly, Primary | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-05a0 Muffler And Mounting
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 4 |
| 01***00 | Bolt, Mount Back-Up Alarm | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-06a0 Cooling Fan
| 01***00 | Bolt, Mount Back-Up Alarm | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
| 12***H1 | Spacer, Fan | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-07a0 Heat Shield
| 01***20 | Bolt,(Forwarded Individually Parts) | 8 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***35 | Bolt, Mount Bracket To Floor | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-08a0 Switch And Sensor
| 60***61 | Sensor,Water Temperature | 1 |
| 67***10 | Nipple | 1 |
| 67***40 | Switch,Oil Pressure | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0000-09a0 Rear Hanger
| 01***30 | Bolt, Mounting - Front Hand Rails | 1 |
| 01***55 | Bolt,(With Joy Stick Steering) | 1 |
| 41***70 | Distance Piece | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0100-01a0 Engine Mounting
| 01***95 | Capscrew - M12 | 3 |
| 01***45 | Bolt | 2 |
| 01***35 | Capscrew | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Engine Related Parts : Fig No. B0300-01a0 Exhaust Pipe
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 17***70 | Washer (Isolator Mounting) | 4 |
| 41***30 | Pipe, Exhaust | 1 |
Front Frame
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4110-01a0 Front Frame 2 Spool Control Valve
| 04***60 | Screw,Machine Model (For Ec Reg.) | 4 |
| 41***00 | Frame, Front | 1 |
| 42***42 | Plate Name (Limited Supply) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4111-01a0 Front Frame 3 Spool Control Valve
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 6 |
| 01***08 | Nut, Lock | 4 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4120-01a0 Rear Frame
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4130-01a0 Hinge Pin
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 5 |
| 01***19 | Nut | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4140-01a0 Steering Cylinder Piping
| 01***45 | Bolt, Bracket Mounting | 1 |
| 01***08 | Nut,See Fig. K4010-04a0 | 1 |
| 07***34 | O-Ring,(For Without Brake Assistor) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4140-01a1 Steering Cylinder
| 07***65 | O-Ring,(F5350-62a0 -14 ) | 1 |
| 07***65 | Ring,Back-Up (Kit) | 1 |
| 07***15 | Ring,Wear? Piston | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4190-01a0 Lock Bar And Frame Covers
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 8 |
| 04***55 | Pin, Cotter | 1 |
| 41***60 | Pin, Snap | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4210-01a0 Rear Axle Support
| 01***50 | Capscrew - M12 | 8 |
| 01***55 | Capscrew - M12 | 8 |
| 01***30 | Bolt | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Front Frame : Fig No. J4710-01a0 Remote Grease
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
| 07***10 | Connector | 2 |
Fuel Tank And Related Parts
Komatsu : Wa120-3l(S/N A30001-Up) : Fuel Tank And Related Parts : Fig No. D0100-01a0 Fuel Tank
| 01***35 | Bolt,(Not Used With Rops Canopy) | 4 |
| 01***12 | Screw,(Additional Sun Visor) | 5 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
Guard
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4100-01a0 Hood
| 01***08 | Screw - Clip Mounting | 1 |
| 01***12 | Bolt,(With Speedometer) | 2 |
| 01***16 | Bolt, Mount Solenoid Valve | 6 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4100-02a0 Reserve Tank
| 01***25 | Bolt - Relay Mounting | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4101-01a0 Sheet
| 41***10 | Sheet | 1 |
| 41***30 | Sheet | 1 |
| 41***40 | Sheet, Right Hand | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4110-01a0 Hood Door Half Fenders
| 01***20 | Bolt - Mount Risers To Cab Floor | 12 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 8 |
| 01***16 | Washer,(With Water Separator) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4110-01a1 Hood Door Full Fenders
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 12 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4120-01a0 Radiator Guard Grille And Cover
| 01***55 | Bolt - Mount Cage To Transmission Case | 4 |
| 01***16 | Bolt, Mount Solenoid Valve | 6 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 3 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4120-02a0 Radiator Guard Electrical System And Sheet
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***06 | Nut | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4120-03a0 Radiator Guard
| 01***60 | Bolt, Mounting | 4 |
| 41***10 | Guard | 1 |
| 41***20 | Spacer | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4200-01a0 Rear Half Fender
| 01***20 | Bolt - Mount Risers To Cab Floor | 6 |
| 01***30 | Bolt, Mounting - Front Hand Rails | 5 |
| 01***06 | Nut | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4210-01a0 Front Fender
| 01***30 | Bolt, Mounting - Front Hand Rails | 4 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 4 |
| 01***10 | Nut, Plate Mounting | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4220-01a0 Rear Full Fenders
| 01***16 | Bolt - Starting Motor Ground Cable | 10 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 3 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 7 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4220-02a0 Front Mud Guard
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 6 |
| 01***10 | Nut, Plate Mounting | 6 |
| 41***60 | Plate, Left Hand | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4220-02a0 Rear Mud Guard
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 6 |
| 01***10 | Nut, Plate Mounting | 6 |
| 09***00 | Plate? Safety,Do Not Step On Counter Weight | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4230-01a0 Floor Cover
| 01***16 | Bolt - Starting Motor Ground Cable | 10 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 6 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4310-01a0 Entry Ladder
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 8 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 3 |
| 01***30 | Bolt, Mounting - Front Hand Rails | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4320-01a0 Hand Rail And Mirror Rops Canopy
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 8 |
| 01***65 | Bolt - Transmission Tube Mounting | 2 |
| 41***11 | Handrail, Left Hand | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4320-01a1 Hand Rail Rops Cab
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 8 |
| 41***40 | Hand Rail, R.H | 2 |
| 41***60 | Handrail, Left Hand | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4410-01a1 Mirror Rops Cab
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 8 |
| 04***32 | Adapter Sleeves | 4 |
| 36***50 | Cap, Bolt | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4410-02a0 Under Mirror
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 41***10 | Stay | 1 |
| 41***10 | Mirror, Convex | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4510-01a0 Counterweight
| 01***80 | Bolt | 4 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 4 |
| 41***41 | Weight,Counter | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Guard : Fig No. M4510-01a1 Side Counterweights
| 01***65 | Bolt, Mount Side Weights | 2 |
| 01***85 | Bolt | 2 |
| 01***15 | Screw | 1 |
Hydraulic System
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0110-01a0 Hydraulic Tank
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 6 |
| 01***30 | Bolt, Mounting - Front Hand Rails | 3 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 3 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0110-01a1 Filler Cap
| 41***10 | Breather Ass'Y,(Without Lock) | 1 |
| 41***20 | Case Assembly | 1 |
| 41***30 | Packing | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0110-02a0 Hydraulic Piping Steering Valve Line
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 04***12 | Clip,See Fig. K4010-41a1 | 1 |
| 07***20 | Cushion, Hose | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0120-01a0 Hydraulic Piping 2 Spool Valve Connections
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 3 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0120-01a1 Hydraulic Piping 3 Spool Valve Connections
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 3 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0122-01a0 Steering Priority Valve Mounting
| 01***80 | Screw | 2 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 2 |
| 01***50 | Bolt,(Europe Spec.) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0122-01a1 Steering Priority Valve
| 12***H1 | Spring | 1 |
| 12***91 | Valve Assembly, Relief | 1 |
| 12***H1 | O-Ring | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0122-02a0 Hydraulic Piping Steering Priority Valve To Orbitrol Valve
| 07***10 | Nut,(Without Auto Deceleration) | 1 |
| 07***10 | Plug,(Without Auto Deceleration) | 1 |
| 41***60 | O-Ring,See Fig. K4010-05a0 | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0210-01a0 Hydraulic Piping Suction And Delivery Lines
| 01***35 | Bolt, Mount Carrier | 2 |
| 01***35 | Bolt,(For Fix Position) | 4 |
| 01***90 | Capscrew | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H0210-01a1 Equipment Pump
| 12***H1 | Plate, Wear | 2 |
| 14***H1 | Kit, Seal | 1 |
| 41***10 | Pump Assembly, Hydraulic | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-01a0 Hydraulic Piping Control Valve And Drain Lines
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-01a1 2 Spool Control Valve - 1/2
| 01***12 | Bolt | 4 |
| 01***30 | Bolt | 4 |
| 07***38 | Ring, Seal - Between Sections | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-01a2 2 Spool Control Valve - 2/2
| 01***05 | Nut,(For Air Conditioner Less), Nut | 1 |
| 07***12 | O-Ring (Itl) | 1 |
| 07***12 | Ring,Back-Up; Was 07001-02012, Ring,Back-Up (Itl) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-01a3 3 Spool Control Valve - 1/2
| 01***12 | Bolt | 6 |
| 01***25 | Bolt, Seal Cover Mounting | 2 |
| 01***30 | Bolt | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-01a4 3 Spool Control Valve - 2/2
| 01***05 | Nut,(For Air Conditioner Less), Nut | 1 |
| 07***12 | O-Ring (Itl) | 1 |
| 07***12 | Ring,Back-Up; Was 07001-02012, Ring,Back-Up (Itl) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-02a0 Hydraulic Piping Boom And Bucket Cylinder Lines
| 01***35 | Bolt, Mounting - Flywheel Housing End | 1 |
| 01***45 | Bolt, Mount Divider Valve | 2 |
| 01***50 | Bolt,(See Fig.A4010-C3w6) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-02a1 Boom Cylinder
| 01***29 | Nut - Front Axle Mounting | 1 |
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 07***95 | O-Ring,(Y1620-11a0a-12) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-02a2 Bucket Cylinder Standard Boom Or Logger
| 07***08 | Plug,(For W/O. Corrosion Resistor) | 1 |
| 07***41 | Nut, Nylon | 1 |
| 07***30 | Bushing, Rod | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-02a3 Bucket Cylinder Hi Lift Boom
| 07***00 | O-Ring,(F4350-65a1 -5 ) | 1 |
| 07***95 | O-Ring,(Y1620-11a0a-12) | 1 |
| 07***08 | Plug,(For W/O. Corrosion Resistor) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-03a1 Hydraulic Piping Ecss Lines - 1/2
| 01***00 | Bolt,(For Front Brake Release) | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 6 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4200-03a2 Hydraulic Piping Ecss Lines - 2/2
| 07***34 | O-Ring,(For Without Brake Assistor) | 7 |
| 07***28 | Nut,(Without Tilt Cylinder) | 1 |
| 07***16 | Plug,(Without Tilt Cylinder) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4410-01a0 Hydraulic Piping Steering Lines
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 07***03 | Hose | 4 |
| 07***10 | Nut,(Without Auto Deceleration) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4410-01a1 Ground Driven Steering Pump Mounting
| 01***30 | Bolt,Radio Controlled Slag Handling | 3 |
| 01***16 | Bolt | 1 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4410-01a2 Ground Driven Steering Pump To Manifold
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***35 | Bolt,Snap | 4 |
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4410-01a3 Ground Driven Steering Diverter Valve To Tank
| 01***85 | Bolt, Divider Valve Mounting | 2 |
| 01***45 | Bolt, Mount Divider Valve | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4410-01a4 Ground Driven Steering Supply Lines
| 01***60 | Capscrew | 2 |
| 01***15 | Bolt, Fan Mounting | 4 |
| 01***30 | Capscrew (1) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4420-01a0 Ground Driven Steering Supply Pump
| 04***24 | Pin,Dowel (For No.3 Housing) | 4 |
| 04***18 | Ring, Retaining | 1 |
| 07***00 | O-Ring,(Y1620-11a0a-11) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4420-02a0 Ground Driven Steering Diverter Valve
| 01***25 | Bolt,Without Revolution Sensor | 2 |
| 01***30 | Screw | 2 |
| 01***70 | Screw | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Hydraulic System : Fig No. H4420-03a0 Ground Driven Steering Check Valve
| 07***35 | O-Ring, At Lower Oil Cooler Inlet Port | 1 |
| 70***11 | Body | 1 |
| 70***21 | Poppet | 1 |
Marks And Plates
Komatsu : Wa120-3l(S/N A30001-Up) : Marks And Plates : Fig No. U0100-01a0 Marks And Plates English
| 09***80 | Plate? Safety,Without E.S.Cover (Except Ec) | 2 |
| 09***50 | Plate, Mark, Komatsu | 2 |
| 09***00 | Plate, Safety | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Marks And Plates : Fig No. U0100-01a1 Marks And Plates French
| 09***80 | Plate? Safety,Without E.S.Cover (Except Ec) | 2 |
| 09***50 | Plate, Mark, Komatsu | 2 |
| 09***00 | Plate, Safety | 2 |
Operator'S Compartment And Control System
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0110-01a0 Suspension Seat Fabric
| 01***20 | Screw | 4 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 4 |
| 01***06 | Nut | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0110-01a1 Suspension Seat Vinyl
| 01***20 | Screw | 4 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 4 |
| 01***06 | Nut | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0160-01a0 Seat Belt Tethered
| 02***19 | Bolt,Tether | 2 |
| 09***01 | Bolt,(For Shipping) | 2 |
| 09***02 | Washer,(For Shipping) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0160-01a1 Seat Belt Non-Tethered
| 09***01 | Bolt,(For Shipping) | 2 |
| 09***02 | Washer,(For Shipping) | 2 |
| 09***03 | Nut,(For Shipping) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-01a0 Rops Cab Glass, Front Wiper And Door Seal
| 01***25 | Bolt,Without Revolution Sensor | 12 |
| 01***08 | Screw - Clip Mounting | 4 |
| 01***10 | Bolt - Relay And Flasher Mounting | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-04a0 Rops Cab Roof And Rear Interior Trim
| 01***12 | Screw | 8 |
| 01***16 | Screw | 4 |
| 01***12 | Screw | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-06a0 Rops Cab Rear Glass And Rear Wiper
| 01***12 | Screw,(Without Ashtray) | 2 |
| 01***10 | Bolt - Relay And Flasher Mounting | 4 |
| 01***08 | Washer,(For Mounting First Aid Kit) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-07a0 Rops Cab Electrical System
| 01***10 | Screw | 1 |
| 01***12 | Screw | 2 |
| 01***12 | Screw | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-09a0 Rops Cab Hold Open Door Latch
| 01***30 | Screw | 2 |
| 01***10 | Screw,(For Shipping) | 4 |
| 01***35 | Bolt, Mount Bracket To Floor | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-11a0 Rops Cab Left Door - 1/2
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***20 | Screw | 3 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-12a0 R0ps Cab Left Door Lock - 2/2
| 27***R1 | Nut, Lock - No. 10-32 | 4 |
| 41***50 | Rotor Latch Assembly, R.H. Door | 1 |
| 41***60 | Handle, Inside R.H | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-13a0 Rops Cab Door Mounting Parts
| 01***25 | Bolt,Without Revolution Sensor | 12 |
| 01***23 | Washer, Wiring Harness Mounting Bracket | 12 |
| 04***53 | Pin,Cotter (For Radio Control) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-14a0 Rops Cab Right Door - 1/2
| 01***25 | Bolt,Without Revolution Sensor | 4 |
| 01***20 | Screw | 3 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-15a0 R0ps Cab Right Door Lock - 2/2
| 27***R1 | Nut, Lock - No. 10-32 | 4 |
| 41***50 | Latch, 2-Rotor Assembly L.H | 1 |
| 41***60 | Handle, Inside L.H | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-17a0 Rops Cab Front Interior Trim
| 01***12 | Screw | 2 |
| 01***10 | Bolt - Relay And Flasher Mounting | 3 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 3 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-21a0 Rops Cab Mounting Parts
| 01***95 | Capscrew - M20 | 4 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***25 | Bolt | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0210-22a0 Rops Cab Handrail And Plate Mark
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0310-01a0 Floor Mat
| 41***10 | Mat,Floor (Op) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0350-01a0 Window Washer Tank
| 01***16 | Bolt, Mounting Transmission Control Switch | 2 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
| 01***05 | Nut,Voice Alarm | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0410-01a0 Rops Canopy
| 01***95 | Capscrew - M20 | 4 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 4 |
| 01***55 | Bolt,(Without Rops) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-01a0 Air Conditioner Complete Assembly
| 41***20 | Freon, R134 | 1 |
| 41***90 | Kit, Hardware | 1 |
| 41***10 | A/C Heater Hardware Kit | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-02a0 Air Conditioner Air Filter Box
| 41***40 | Box Assembly, Filter | 1 |
| 41***50 | Box, Filter | 1 |
| 41***60 | Cover, Filter | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-02a1 Air Conditioner Resistor, Diode And Fuse
| 14***H1 | Diode Assembly | 1 |
| 14***H1 | Block, Terminal - 4 Circuit, 30 Amp | 1 |
| 41***00 | Kit, Hardware | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-03a0 Air Conditioner Fan Box
| 14***H1 | Foam, Fan Assembly 9 1/4 Long | 1 |
| 41***80 | Louver, Flush Mount | 2 |
| 41***90 | Panel, Mount | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-03a1 Air Conditioner Air Selector Slide
| 20***20 | Lever, Air Circulator | 1 |
| 41***10 | Kit, Hardware | 1 |
| 41***90 | Slide Assembly, Inside Air Selector | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-04a0 Air Conditioner A/C Heater Coils
| 13***H1 | Valve, Expansion | 1 |
| 14***H1 | Switch, Low Pressure | 1 |
| 14***H1 | O-Ring | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-05a0 Air Conditioner Electrical
| 41***00 | Harness, Main | 1 |
| 41***10 | Harness | 1 |
| 93***C1 | Strap, Tie - Dual Hp Harness To Main Harness | 6 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-06a0 Air Conditioner A/C Piping
| 41***70 | Dryer, Receiver | 1 |
| 41***30 | Hose, Return | 1 |
| 41***40 | Hose, Condenser | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-06a1 Air Conditioner Compressor Mounting
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
| 01***35 | Bolt,(For Quick Shift) (Mitsubishi) | 1 |
| 01***40 | Bolt, Mount Master Brake Cylinder | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-06a2 Air Conditioner Condenser And Mounting
| 41***60 | Kit, Condenser Mounting | 1 |
| 41***30 | Harness, External - Jumper | 1 |
| 41***50 | Bracket, Condenser | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-06a3 Air Conditioner Condenser
| 13***H1 | Decal, 24 Volt | 1 |
| 13***20 | Nut, 1/4-20 - Acorn | 8 |
| 17***16 | Washer, External/Internal Lock | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-07a0 Air Conditioner Heater Piping
| 01***10 | Bolt - Relay And Flasher Mounting | 2 |
| 07***59 | Clamp,See Fig. K4010-05a0 | 6 |
| 08***14 | Clip,(For Large-Capacity Battery) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-08a0 Air Conditioner Air Ducting
| 01***12 | Screw,(Not Shown) (For Std Cab) | 4 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 8 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0710-08a1 Air Conditioner Controller
| 41***70 | Screw, 1/4-20 X 1/2 - Torx / Whizlock | 8 |
| 41***70 | Controller, Membrane | 1 |
| 41***80 | Bracket, Controller | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-01a0 Heater Complete Assembly
| 41***10 | Box Assembly, Coil - Heater | 1 |
| 42***40 | Sensor, Temperature | 1 |
| (X***0) | Heater | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-02a0 Heater Air Filter Box
| 41***40 | Box Assembly, Filter | 1 |
| 41***50 | Box, Filter | 1 |
| 41***60 | Cover, Filter | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-02a1 Heater Resistor, Diode And Fuse
| 14***H1 | Diode Assembly | 1 |
| 14***H1 | Block, Terminal - 4 Circuit, 30 Amp | 1 |
| 41***00 | Kit, Hardware | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-03a0 Heater Fan Box
| 14***H1 | Foam, Fan Assembly 9 1/4 Long | 1 |
| 41***80 | Louver, Flush Mount | 2 |
| 41***90 | Panel, Mount | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-03a1 Heater Air Selector Slide
| 20***20 | Lever, Air Circulator | 1 |
| 41***10 | Kit, Hardware | 1 |
| 41***90 | Slide Assembly, Inside Air Selector | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-04a0 Heater Coil Box
| 41***90 | Screw, #10-32 X 1/2 - Torx | 6 |
| 41***70 | Screw, 1/4-20 X 1/2 - Torx / Whizlock | 7 |
| 41***10 | Box Assembly, Coil - Heater | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-05a0 Heater Electrical
| 41***90 | Harness | 1 |
| 93***C1 | Strap, Tie - Dual Hp Harness To Main Harness | 6 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-06a0 Heater Heater Piping
| 01***10 | Bolt - Relay And Flasher Mounting | 2 |
| 07***59 | Clamp,See Fig. K4010-05a0 | 6 |
| 08***14 | Clip,(For Large-Capacity Battery) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-07a0 Heater Air Ducting
| 01***12 | Screw,(Not Shown) (For Std Cab) | 4 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 8 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0711-07a1 Heater Controller
| 41***70 | Screw, 1/4-20 X 1/2 - Torx / Whizlock | 8 |
| 41***70 | Controller, Membrane | 1 |
| 41***80 | Bracket, Controller | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0714-01a0 Cooler And Heater Box With Cab
| 01***16 | Bolt, Mounting Transmission Control Switch | 4 |
| 07***89 | Clamp,(D31s) | 2 |
| 42***70 | Grille,(See Fig. K0210-16a0) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0715-01a0 Rear Console Box With Cab
| 01***10 | Screw | 2 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 5 |
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 5 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0715-02a0 Left Console Box - 1/2 With Cab
| 01***12 | Bolt,(See Fig. K0210-16a0) | 4 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 3 |
| 01***08 | Washer,(For Joy Stick Steering) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0715-03a0 Left Console Box - 2/2 With Cab
| 01***16 | Bolt, Mounting Transmission Control Switch | 4 |
| 09***12 | Cap,(With Auto Emergency Steering) | 1 |
| 41***10 | Plate | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K0810-01a0 Am/Fm Radio With Cassette
| 01***23 | Washer,(With Auto Emergency Steering) | 4 |
| 08***00 | Connector (Modify Air Dryer Lead) | 1 |
| 08***06 | Terminal | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4100-01a0 Floor Support
| 01***50 | Capscrew | 8 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 16 |
| 01***15 | Nut, Lock | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4200-01a0 Right Console Box And Floor
| 01***12 | Screw,Sems | 1 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 3 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4200-02a0 Dashboard To Floor
| 01***10 | Bolt - Relay And Flasher Mounting | 2 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 8 |
| 01***16 | Bolt, Mount Solenoid Valve | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4210-01a0 Floor Harness
| 01***20 | Screw | 2 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 10 |
| 01***16 | Bolt - Starting Motor Ground Cable | 12 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4215-01a0 Floor Decal
| 41***10 | Plate,(With Boom Shock Absorbing) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4220-01a0 Gauge And Sensor Km/H Display
| 01***08 | Screw | 2 |
| 01***16 | Screw | 5 |
| 01***12 | Screw,(Not Shown) (For Std Cab) | 7 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4220-02a0 Gauge And Sensor Mph Display
| 01***08 | Screw | 2 |
| 01***16 | Screw,(For Joy Stick Steering) | 5 |
| 01***12 | Screw,(Not Shown) (For Std Cab) | 7 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4290-01a0 Electrical System With Cab
| 01***20 | Screw | 2 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 2 |
| 22***60 | Fuse? 20a,20a | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4410-01a0 Engine Control
| 01***16 | Bolt, Mount Washer Tank To Bracket, Bolt | 2 |
| 01***70 | Screw | 1 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4420-01a0 Steering Column And Wheel
| 01***50 | Bolt,(Europe Spec.) | 3 |
| 01***08 | Nut, Accumulator Mounting | 2 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4420-03a0 Steering Orbitrol Valve
| 10***21 | Bearing, Needle Thrust | 1 |
| 12***H1 | Pin, Centering | 1 |
| 12***H1 | Drive | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4420-04a0 Steering Orbitrol Valve Connections
| 41***10 | Elbow | 1 |
| 41***60 | O-Ring,See Fig. K4010-05a0 | 6 |
| 41***10 | Nipple | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4430-01a0 Transmission Control Switch
| 01***08 | Screw, Mount Damper To Shaft | 6 |
| 01***12 | Screw | 2 |
| 01***08 | Screw, Terminal | 10 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4460-01a0 Brake Controls
| 01***65 | Bolt,(Used With Pin Puller) | 2 |
| 01***20 | Screw | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4460-02a0 Brake Piping Reservoir Line
| 01***16 | Bolt, Mount Solenoid Valve | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 5 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4460-03a0 Brake Piping Rear Brake Lines
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 1 |
| 07***23 | O-Ring,(F4350-65a0 -16 ) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4460-04a0 Brake Piping Front Brake Lines
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***55 | Bolt, Mount Dryer To Bracket And Frame | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4460-05a0 Brake Master Cylinder
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***60 | Bolt | 4 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4500-01a0 Loader Control Lever
| 01***25 | Screw | 2 |
| 01***30 | Screw, Mounting | 1 |
| 01***04 | Nut,(For Air Conditioner Less) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4500-02a0 Loader Control Linkage
| 01***10 | Screw,(With Air Conditioner) | 1 |
| 01***12 | Bolt,(With Speedometer) | 1 |
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4500-03a0 3rd Spool Control Lever And Linkage
| 01***55 | Bolt | 1 |
| 01***35 | Bolt, Stopper | 1 |
| 01***16 | Bolt - Starting Motor Ground Cable | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Operator'S Compartment And Control System : Fig No. K4504-01a0 Bucket Positioner
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 3 |
| 01***30 | Bolt | 2 |
| 01***10 | Nut | 2 |
Power Train And Final Drive
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4200-01a0 Center Drive Shaft
| 01***45 | Screw | 8 |
| 25***R1 | Bolt, 3/8nc X 1 1/4 | 8 |
| 41***20 | Fitting, Grease | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4200-02a0 Front Drive Shaft
| 01***55 | Capscrew | 4 |
| 01***10 | Screw | 1 |
| 01***45 | Screw | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4200-03a0 Rear Drive Shaft
| 01***45 | Screw | 8 |
| 25***R1 | Bolt | 8 |
| 41***20 | Fitting, Grease | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4300-01a0 Transmission Mounting Parts
| 01***35 | Bolt, M10x1.5x35 | 12 |
| 01***32 | Washer,(With Auto Emergency Steering) | 12 |
| 42***10 | O-Ring, Sealing - Flywheel Housing End | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4300-02a0 Transmission Oil Gauge And Filler
| 01***30 | Bolt, Mounting - Front Hand Rails | 3 |
| 07***60 | O-Ring,(F4350-59a0 -6 ) | 1 |
| 41***10 | Filler, Oil Tube | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4300-03a0 Transmission Harness
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 08***00 | Diode,(With Air Conditioner) | 3 |
| 08***10 | Clip, Brake Line To Front Axle | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4300-04a0 Brake Piping And Linkage Bracket
| 01***30 | Bolt, Mounting - Front Hand Rails | 2 |
| 07***28 | Hose,(See Fig.0411-11) | 1 |
| 07***97 | Clamp,(With Pre-Fuel Filter) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-51a0 Transmission Front And Rear Cases
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 7 |
| 01***75 | Bolt,(For 75a Alternator) | 9 |
| 01***80 | Bolt,(Shim 5 Pieces Over) | 3 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-52a0 Transmission Reverse And 1st Clutch
| 06***10 | Bearing,Ball | 2 |
| 41***22 | Ring,(F4350-54a0 -21 ) | 3 |
| 41***70 | Bearing, Needle | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-53a0 Transmission Forward And 2nd Clutch
| 06***10 | Bearing,Ball | 1 |
| 06***10 | Bearing,Ball | 1 |
| 41***22 | Ring,(F4350-54a0 -21 ) | 3 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-54a0 Transmission 3rd And 4th Clutch
| 06***10 | Bearing,Ball | 1 |
| 06***12 | Bearing,Radial Ball | 1 |
| 41***22 | Ring,(F4350-54a0 -21 ) | 3 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-55a0 Transmission Input Shaft And 3rd And 4th Gears
| 04***18 | Ring, Retaining | 1 |
| 06***07 | Bearing,Roller | 1 |
| 06***10 | Bearing,Ball | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-56a0 Transmission Output Shaft
| 01***25 | Capscrew | 2 |
| 01***10 | Bolt | 1 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-57a0 Transmission Parking Brake
| 01***20 | Bolt,(For Mono Lever Steering) | 2 |
| 01***16 | Bolt | 1 |
| 06***20 | Bearing,(Not Shown) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-58a0 Transmission Pump Drives
| 04***20 | Ring, Retaining | 2 |
| 04***18 | Ring, Snap | 2 |
| 04***25 | Ring,Snap (Kit) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-59a0 Transmission Control Valve Mounting
| 01***70 | Bolt - Bracket And Oil Inlet Tubemounting | 2 |
| 01***20 | Bolt, Mount Main Relief Valve | 4 |
| 01***30 | Capscrew (1) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-59a1 Transmission Complete Control Valve
| 01***60 | Bolt,(Without Alternator Bracket) | 1 |
| 01***75 | Bolt,(See Fig.0142) | 1 |
| 01***35 | Bolt, Mounting - Flywheel Housing End | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-60a0 Transmission Upper Control Valve
| 01***30 | Bolt,(For France Noise Suppression) | 12 |
| 01***40 | Bolt,(Dust And Dirt Protection) | 3 |
| 01***50 | Bolt | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-61a0 Transmission Lower Control Valve
| 01***16 | Bolt,(For Slag Handling) | 2 |
| 01***55 | Bolt,(For Suction? Reversible Fan) | 7 |
| 01***03 | Bolt | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-62a1 Transmission Pilot Valve Filter
| 41***60 | Filter, Transmission Control Valve | 1 |
| 41***30 | Element (Transmission-Lower Control Valve) | 1 |
| 41***40 | Cover, Head | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-63a0 Transmission Accumulator Valve
| 01***25 | Screw | 4 |
| 07***14 | O-Ring,(F4350-63a1a-2 ) | 1 |
| 07***38 | Ring, Seal - Between Sections | 3 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-64a0 Transmission Pump And Piping
| 01***30 | Bolt,(For France Noise Suppression) | 2 |
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***35 | Capscrew | 4 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-65a0 Transmission Oil Filter
| 07***23 | O-Ring,(F4350-68a0 -13 ) | 1 |
| 07***09 | Plug, Oil Drain | 1 |
| 41***00 | Filter Assembly (See Pg F-058) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-65a1 Transmission Hydraulic Pump
| 04***15 | Ring, Snap | 1 |
| 70***10 | Seal, Oil | 1 |
| 70***70 | Plate | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-66a0 Transmission Accessories
| 01***20 | Bolt,(Used When Towing Winch) | 1 |
| 01***30 | Bolt,Radio Controlled Slag Handling | 3 |
| 01***45 | Bolt,(Cold Terrain Spec.) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4350-67a0 Transmission Torque Converter
| 01***25 | Screw | 24 |
| 01***25 | Bolt, Mount Cover | 6 |
| 01***55 | Bolt,(See Service News) | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4400-01a0 Front Axle Complete Assembly
| 01***80 | Bolt, Axle | 8 |
| 01***25 | Bolt, Housings To Differential | 28 |
| 01***19 | Nut | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4400-02a0 Front Axle Brakes And Final Drive
| 01***85 | Bolt | 2 |
| 41***50 | Spacer | 2 |
| 41***60 | Shim (0.05mm) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4400-03a0 Front Axle Differential
| 01***30 | Capscrew - M12 X 1.75 | 28 |
| 01***35 | Bolt, Mount Carrier | 6 |
| 01***45 | Capscrew - M16 | 12 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4460-01a0 Parking Brake Control Pedal And Lever
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***12 | Bolt,(With Speedometer) | 4 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 3 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4460-02a0 Parking Brake Control Lower Linkage
| 01***35 | Bolt, Mount Bracket To Floor | 1 |
| 01***12 | Washer,(With Body Positioner) | 1 |
| 01***16 | Washer,(With Water Separator) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4500-01a0 Rear Axle Complete Assembly
| 01***25 | Bolt, Housings To Differential | 28 |
| 01***45 | Washer | 28 |
| 01***60 | Washer,(Without Rops Guard? Canopy) | 24 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4500-02a0 Rear Axle Brakes And Final Drive
| 01***85 | Bolt | 2 |
| 41***50 | Spacer | 2 |
| 41***60 | Shim (0.05mm) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4500-03a0 Rear Axle Differential
| 01***30 | Capscrew - M12 X 1.75 | 28 |
| 01***35 | Bolt, Mount Carrier | 13 |
| 01***45 | Capscrew - M16 | 12 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4700-01a0 Transmission Cooling Piping
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 3 |
| 07***34 | O-Ring,(For Front Attachment) | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Power Train And Final Drive : Fig No. F4810-01a0 Transmission Mounting
| 01***45 | Bolt | 2 |
| 01***60 | Bolt | 4 |
| 01***18 | Nut | 2 |
Suspension And Wheels (Wheel Type Machine)
Komatsu : Wa120-3l(S/N A30001-Up) : Suspension And Wheels (Wheel Type Machine) : Fig No. S0120-01a1 Tire, Valve And Rim
| 09***20 | Cap, Tire Valve | 1 |
| 12***H1 | Tire And Valve - 17.5-R25 Xhatl3 | 4 |
| 41***10 | Valve Assembly,Tire | 1 |
Work Equipment
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4110-01a0 Lift Arm And Bellcrank
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 5 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 5 |
| 17***70 | Washer (Isolator Mounting) | 5 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4110-02a0 Lift Arm And Bellcrank Mounting Parts
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 8 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 2 |
| 07***75 | Fitting,Grease (Without Lub. Piping) | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4110-03a0 Boom Kick Out
| 01***20 | Bolt - Mount Risers To Cab Floor | 2 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 2 |
| 01***10 | Nut, Plate Mounting | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4120-01a0 1.3 M? Bucket
| 41***10 | Bucket | 1 |
| 41***20 | Plate (Welded) | 2 |
| 41***21 | Cutting Edge For Bucket | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4120-01a1 1.2 M? Bucket
| 41***20 | Plate (Welded) | 2 |
| 41***21 | Cutting Edge For Bucket | 1 |
| 41***10 | Bucket Ass'Y | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4120-01a2 1.6 M? Bucket
| 41***20 | Plate | 2 |
| 41***21 | Cutting Edge For Bucket | 1 |
| 41***10 | Bucket | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4122-01a0 Bolt On Cutting Edge
| 01***60 | Flat Washer - M20 (Hardened) | 8 |
| 02***70 | Bolt, Plow | 8 |
| 02***19 | Nut | 8 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4130-01a1 Bucket Teeth
| 02***70 | Bolt, Mount Center Adapters | 10 |
| 02***75 | Bolt, Mount Corner Adapters | 2 |
| 09***16 | Nut | 12 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4140-01a0 Boom Cylinder Piping
| 01***50 | Bolt,(See Fig.A4010-C3w6) | 2 |
| 17***60 | Spacer,(With Lock-Up) | 2 |
| 17***20 | Clamp | 2 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4150-01a0 Bucket Cylinder Piping Standard Boom
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
| 07***34 | O-Ring,(F2310-59a0 -4 ) | 1 |
| 07***00 | Fitting, Grease - Upper Hinge Pin | 1 |
Komatsu : Wa120-3l(S/N A30001-Up) : Work Equipment : Fig No. T4510-01a1 Bucket Cylinder Piping Hi Lift Boom
| 01***16 | Washer,Radio Controlled Slag Handling | 2 |
| 07***34 | O-Ring,(For 2-Actuater Attachment) | 2 |
| 07***34 | O-Ring,(F2310-59a0 -4 ) | 1 |
WA120-3L(S/N A30001-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 leading letter(s) before the numeric serial sequence (e.g., 'A' in A30001).
| Prefix | Identifies | Notes |
|---|---|---|
| A | WA120-3L | Serial range A30001-UP. Confirmed by published references catalog and published references shop manual listing for the WA120-3L variant. |
Frequently asked questions
What engine does the Komatsu WA120-3L use?
The Komatsu WA120-3L (S/N A30001-UP) uses the Komatsu S4D102E-1 diesel engine.
What is the operating weight of the WA120-3L?
The operating weight is approximately 8.2 tons (18,000 lb), varying by configuration and attachment.
What model replaced the Komatsu WA120-3L?
The Komatsu WA120-5 succeeded the WA120-3 series.
What WA120-3L(S/N A30001-UP) owners discuss
What engine is installed in the WA120-3L (S/N A30001-UP) and what are its key specifications?
The WA120-3L (S/N A30001-UP) uses the Komatsu S4D102E-1 diesel engine. It is a 4-cylinder, turbocharged unit with a displacement of 298.5 cu in (4.89 L). Gross power is rated at 63 hp (47 kW) at 2400 rpm. The WA120-3 (non-L) variant for serials 50001-52999 uses the 6D95L engine, while the WA120L-3 (S/N 54001-UP) uses the S4D102E-1N-L. Fluid specifications include Komatsu EO or equivalent for engine oil and Super-coolant AF-NAC for the cooling system. Have your dealer verify the exact engine plate for your serial number before ordering parts.
How does the hydraulic system behave under load, and what are common failure points?
The WA120-3 series utilizes a load-sensing hydraulic system with a main pump flow capacity of 30.4 gal/min (115 L/min). A common operational issue reported by owners is hydraulic weakness that manifests only when the oil is hot. This pattern indicates internal leakage in the main control valve, hydraulic pump, or cylinders, as viscosity drops at operating temperature. If all functions slow down simultaneously, check the hydraulic oil level, filter condition, and engine RPM under load. If only one function is slow, inspect the specific cylinder, control valve spool, or load-holding valve. Have your dealer verify hydraulic pressure settings.
What are the typical undercarriage and tire wear patterns for this machine type?
The WA120-3L is equipped with 16.9-24 tires. Wear patterns are heavily influenced by the machine's operating weight of 16,953.6 lb (7,689 kg) and static tipping weight of 13,889.2 lb (6,302 kg). Operators note that rapid tire wear occurs in abrasive aggregate applications or when operating with high ground pressure on rocky surfaces. The rear axle oscillation is rated at 24 degrees, which helps maintain traction but can accelerate uneven tire wear if tire pressures are not adjusted for the specific terrain. Regular rotation and pressure checks are essential to extend tire life.
What are the known powertrain and transmission behaviors for the WA120-3 series?
The WA120-3L (S/N A30001-UP) shares the powertrain architecture of the WA120-3 series, which typically features a 3-speed forward and 3-speed reverse transmission. Max speed is approximately 21.5 mph (34.6 km/h) forward and 21.8 mph (35.1 km/h) reverse. A critical failure mode involves transmission oil overheating and venting. If transmission oil pours out of the breather and subsequently enters the engine crankcase (overflowing the dipstick or tappet cover), it indicates a failed transmission-to-engine oil cooler seal or core. This requires immediate shutdown to prevent engine damage. Have your dealer verify the transmission cooler integrity.
What electrical or sensor issues are commonly reported by owners?
Komatsu wheel loaders of this era rely on electronic control systems that can be sensitive to power supply stability. Owners report intermittent starting, dashboard failures, or random shutdowns often linked to unstable power supplies or faulty sensors. Multiple fault codes may appear simultaneously due to poor battery state of charge, corroded battery terminals, or loose engine/chassis grounds.
What should be checked when buying a used WA120-3L (S/N A30001-UP)?
When inspecting a used WA120-3L (S/N A30001-UP), verify the engine model is S4D102E-1. Check for signs of transmission oil contamination in the engine oil, which indicates a failed oil cooler. Test all hydraulic functions cold and hot to identify internal leakage that worsens with temperature. Inspect the radiator, hydraulic oil cooler, and charge-air cooler for packed debris between heat exchangers. Verify the condition of 16.9-24 tires and check for excessive play in the final drives or travel motors.
What are the fluid capacities and specifications for the WA120-3L?
The WA120-3L has a fuel capacity of 133 L (35.2 gal). Hydraulic oil specifications include Komatsu HO or equivalent ISO VG46 hydraulic oil. Transmission and final drive fluids should be Komatsu TO or equivalent powertrain oil. Axle oil should be Komatsu AXO or equivalent SAE 80WZF. Engine oil should be Komatsu EO or equivalent API CD grade. Coolant should be Komatsu Super-coolant AF-NAC.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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