Komatsu WA70-5(W/CAB S/N H50051-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu WA70-5 is a compact utility wheel loader designed for light material handling, such as sand, gravel, and dirt. This series features a 4D95-LE3, 4-cylinder, naturally aspirated diesel engine producing 60 hp (45 kW) at 2350 rpm. The machine operates with a hydrostatic transmission capable of two forward and two reverse gears, providing a maximum speed of 20 km/h (12.4 mph). It is characterized by an operating weight range of approximately 5,060 kg to 5,100 kg (11,130 lb to 11,244 lb) and utilizes an articulated frame with a 40-degree steering angle.
The WA70-5 represents a specific production era between 2004 and 2008. Evolution across the series focused on integrating advanced telematics like KOMTRAX for remote monitoring of fuel, loads, and fault codes. In today's used market, this machine remains highly relevant due to its robust hydrostatic drivetrain and the availability of Komatsu-specific maintenance ecosystems like KOWA fluid analysis. Its compact footprint makes it a primary choice for applications requiring high maneuverability without sacrificing the breakout force necessary for utility work.
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 WA70-5(W/CAB S/N H50051-UP) specifications
Engine
| Model | Komatsu 4D95-LE3 |
| Net Power | 60 hp (45 kW) @ 2350 rpm |
| Displacement | 201 cu in (3.3 L) |
| Cylinders | 4 |
| Aspiration | Natural |
Weights
| Operating Weight | 11,130 lb (5,060 kg) to 11,244 lb (5.1 t) |
| Static Tipping Weight | 8,870 lb (4,030 kg) to 8,884 lb (4,030 kg) |
Dimensions
| Length with Bucket on Ground | 5,360 mm (17.58 ft) to 5 m (16 ft) |
| Width Over Tires | 1,625 mm (5.33 ft) to 64 in (1,625 mm) |
| Height to Top of Cab | 2,465 mm (8.08 ft) to 97 in (2,465 mm) |
| Wheelbase | 6.67 ft (2,050 mm) to 6.6 ft (2 m) |
| Ground Clearance | 1 ft (305 mm) |
| Maximum Lift Height to Hinge Pin | 123.6 in (3,140 mm) |
| Bucket Width | 5.91 ft (1.8 m) to 6.6 ft (2 m) |
Performance
| Max Speed - Forward | 12.4 mph (20 km/h) |
| Max Speed - Reverse | 12.4 mph (20 km/h) |
| Breakout Force | 8,010 lb (3,640 kg) to 8,025 lb (3,640 kN) |
| Bucket Capacity - Heaped | 1.11 yd³ (0.85 m³) to 1 yd³ (1 m³) |
| Rated Operating Capacity (Straight) | 4,435 lb (2,015 kg) |
| Turning Radius | 13.7 ft (4,175 mm) to 13 ft (4 m) |
Service capacities (summary)
| Fuel Tank Capacity | 21.4 gal (81 L) |
| Hydraulic System Capacity | 7.9 gal (30 L) |
| Engine Oil Capacity | 7.5 L to 8 L (2 gal) |
| Cooling System Capacity | 2.4 gal (9.1 L) |
| Front Axle/Diff Fluid Capacity | 2.2 gal (8.4 L) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
WA70-5(W/CAB S/N H50051-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 7.5 L (2 gal) | Komatsu Engine Oil (EO); varies by configuration/series for 7.9 L (2.1 gal) capacity noted in some technical data sheets |
| Cooling system | 9.1 L (2.4 gal) | Komatsu original anti-freeze; use only water suitable for drinking |
| Fuel tank | 81 L (21.4 gal) | Diesel fuel |
| Transmission/powertrain compartments | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
| Final drives (each) | 8.4 L (2.2 gal) per axle/differential | Not documented for this exact serial range — verify with your dealer |
| Hydraulic system and tank | 30 L (7.9 gal) | Komatsu Hydraulic Oil (HO); use of biodegradable hydraulic oils based on synthetic esters is permitted |
| Axles/differentials | 8.4 L (2.2 gal) per axle | Not documented for this exact serial range — verify with your dealer |
| Grease | Not documented for this exact serial range — verify with your dealer | Not documented for this exact serial range — verify with your dealer |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu WA70-5(W/CAB S/N H50051-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the WA70-5(W/CAB S/N H50051-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Komatsu Oil Wear Analysis (KOWA) during major intervals to monitor engine oil for wear metals like iron or copper and contaminants such as silicon. Regularly sample hydraulic fluid to track particle counts and viscosity changes. Monitoring the cooling system via SCA tests ensures protection against liner pitting. These laboratory-grade analyses, integrated with KOMTRAX telematics, allow for identifying potential pump or engine failures before they cause catastrophic downtime.
Corrective & Common Repairs
Frequent attention should be directed to the hydraulic system relief valve setting, maintained at 230 bar (3300 psi). Monitor the hydrostatic transmission for performance drops and inspect the articulated steering catch for wear. If braking effectiveness decreases, check both service and parking brake functions immediately. Regularly tighten wheel hub bolts and inspect tire pressure to prevent uneven chassis loading or premature component fatigue in the drivetrain.
Overhaul & Rebuild Points
Major overhaul milestones include replacing injector assemblies at 12,000 operating hours. At the 2,000-hour mark, a comprehensive evaluation of the hydraulic system and cooling system is required, including oil changes and valve clearance adjustments. For long-term structural integrity, inspect all boom and bucket welds and check for play in articulation pins. Replacing worn high-pressure piping clamps and fuel spray prevention caps is critical during mid-life rebuilds.
Seasonal & Environment Servicing
During spring and autumn, inspect the air conditioning system, cleaning the condenser and checking compressor fastening. In cold weather, implement engine warming-up procedures and check battery electrolyte levels to ensure reliable starting. For high-dust environments, clean or replace air filter elements more frequently than standard intervals. Ensure the radiator segments are cleared of debris at the start of every cooling season to prevent overheating.
WA70-5(W/CAB S/N H50051-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6204-71-7200 | Fuel Filter | Fuel system service | Check fitment → |
| 42U-01-13170 | Air Filter | Air intake service | Check fitment → |
| 07000-02135 | O-Ring,Hydraulic Oil Filter | Hydraulic service | Check fitment → |
| 600-311-2110 | Filter Element | Scheduled service item | Check fitment → |
| 6204-71-7210 | Filter Head | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
WA70-5(W/CAB S/N H50051-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E10 | Engine controller power failure or engine control drive system circuit malfunction causing engine stall | Disruption in the vehicle controller, ECM power connections, fuses, or ground wires | Inspect ECM power connections, fuses, and ground wires; examine interfacing points |
| E11 | Engine protection mode: output power reduced | Engine control system failure due to high coolant temperature, low oil pressure, or air filter restriction | Check coolant temperature, oil pressure, and air filter status |
| CA115 | Engine crankshaft speed sensor failure (Engine NE and Backup Speed Sensor error) | Broken sensor, wiring issue, or connector corrosion | Replace the speed sensor and verify voltage at the pin connector |
| CA122 | Intake air pressure sensor feedback voltage is too high | Sensor malfunction or wiring fault | Verify the intake pressure sensor and associated wiring |
| CA123 | Intake air pressure sensor feedback voltage is too low | Sensor short circuit or airflow restriction | Check for a sensor short or an airflow restriction |
| CA153 | Intake air temperature sensor feedback voltage is too high | Intake air temperature sensor (IAT) error | Replace or test the IAT sensor |
| CA154 | Intake air temperature sensor feedback voltage is too low | Intake air temperature sensor (IAT) error | Replace or test the IAT sensor |
| CA234 | Engine overspeed | Throttle calibration issues, excessive engine load, or operator misuse | Verify throttle calibration and evaluate engine load cycle |
| CA441 / CA442 | Battery voltage too low or too high | Alternator failure, battery failure, or voltage regulator issues | Replace the alternator or battery; check the voltage regulator |
| AA10NX | Air cleaner clogging | Accumulated debris in the dual stage dry element air filter | Replace the air filter element |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
WA70-5(W/CAB S/N H50051-UP) attachments & work tools
Buckets
Standard heaped capacity is 1.11 yd³ (0.85 m³) or 1 m³ (1 m³), with a bucket width of approximately 5.92 ft (1.8 m) to 6.6 ft (2 m). Available configurations include multi-purpose buckets and specialized digging, leveling, or removal units.
Forklift Attachments
The machine is compatible with forklift truck attachments for material handling tasks. Operation requires specific procedures for working with the attachment as outlined in the operation manual.
Mounting and Control Systems
Work units are managed via a multi-function lever or a control lever for special equipment. The system supports selecting different work units and removing them through specific operational procedures.
Hydraulic and Operational Options
The machine features an open hydraulic system with a relief valve setting of 3300 psi (227.5 MPa). Optional equipment includes E.C.S.S. (Engine Control System/Special Equipment) and a backup alarm for reverse driving.
Safety and Guarding
Factory configurations include ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) cab options. The machine may also be equipped with a 100% differential lock for improved traction.
All WA70-5(W/CAB S/N H50051-UP) assemblies by section
Every catalogued assembly group for the Komatsu WA70-5(W/CAB S/N H50051-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
01 Engine, Engine Mounting
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 01 Engine, Engine Mounting
| 01***00 | Capscrew | 4 |
| 01***25 | Bolt - Relay Mounting | 16 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 02 Cylinder Block And Attaching Parts
| 04***20 | Pin,Dowel (Welded) | 2 |
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 2 |
| 04***08 | Adapter Sleeves | 6 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 04 Crank Assembly
| 01***45 | Bolt,Nylock | 1 |
| 61***31 | Plate | 1 |
| 62***00 | Main Metal Ass'Y | 5 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 05 Cylinder Head And Attaching Parts
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 02***04 | Plug, Pipe | 1 |
| 07***08 | Plug, Expansion | 4 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 07 Cylinder Head Cover, Attaching Parts
| 61***10 | Cap, Oil Filler | 1 |
| 61***20 | Screw | 3 |
| 61***30 | Washer,(B) | 3 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 08 Timing Gear Case And Flywheel Housing
| 01***16 | Bolt, Mounting Transmission Control Switch | 2 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***55 | Screw | 11 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 09 Engine Timing Gear
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 01***70 | Bolt,(For 75a Alternator) | 1 |
| 04***16 | Fitting Wedge | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 10 Engine Lubrication
| 01***16 | Bolt, Mount Solenoid Valve | 4 |
| 01***25 | Bolt - Relay Mounting | 1 |
| 07***59 | Clamp,See Fig. K4010-05a0 | 4 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 15 Water Pump
| 01***16 | Screw | 6 |
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 4 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 20 Injection System
| 01***30 | Stud Bolt | 2 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 1 |
| 01***25 | Screw | 2 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 24 Injection Pump, Body Pump
| 14***00 | O-Ring | 1 |
| 14***00 | Shim | 0 |
| 62***90 | Injection Pump | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 28 Fuel System, Pre Filter
| 01***50 | Bolt,For Weight Adjusting Bolt | 2 |
| 01***55 | Bolt - Mount Cage To Transmission Case | 2 |
| 01***16 | Capscrew | 6 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 49 Air Filter System, Standard
| 01***30 | Bolt,(Water Separator Spec.) | 2 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 2 |
| 01***12 | Washer,(With Body Positioner) | 2 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 54 Air Cleaner
| 42***70 | Air Filter | 1 |
| 42***01 | Filter Element | 1 |
| 42***02 | Filter Element | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 01 Engine, Engine Mounting : 57 Exhaust System
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 9 |
| 42***00 | Silencer | 1 |
| 42***10 | Tube | 1 |
02 Cooling System
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 02 Cooling System : 73 Radiator
| 01***16 | Bolt, Mount Solenoid Valve | 6 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 4 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 6 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 02 Cooling System : 74 Radiator Attaching Parts
| 01***16 | Bolt, Mount Solenoid Valve | 5 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 4 |
| 01***25 | Bolt - Relay Mounting | 1 |
03 Electric System
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 03 Electric System : 42 Alternator
| 01***95 | Bolt (M10-1.50x95) | 1 |
| 01***25 | Bolt - Relay Mounting | 2 |
| 01***30 | Bolt,(Water Separator Spec.) | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 03 Electric System : 43 Starter Motor
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 2 |
| 60***50 | Startermotor | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 03 Electric System : 56 Electric System, Lighting Unit
| 01***16 | Screw, Mount Parking Lights | 4 |
| 01***16 | Bolt, Mount Solenoid Valve | 1 |
| 01***06 | Nut,(With Back-Up Alarm) (Op), Nut; Was 01580-10806 | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 03 Electric System : 61 Electric System, Harness
| 01***16 | Bolt - Starting Motor Ground Cable | 7 |
| 04***10 | Clip,(With Accumulator) | 1 |
| 04***10 | Clip,(Without Cab) | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 03 Electric System : 62 Electric System, Relay
| 01***16 | Screw,(Sandy And Dusty Terrain S.) | 4 |
| 01***10 | Screw,(For Wiper Switch Earth) | 5 |
| 01***12 | Screw,(With Articulate Indicator) | 3 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 03 Electric System : 63 Instrument Box And Instruments
| 42***23 | Plain Washer | 2 |
| 42***01 | Orifice Plate | 2 |
| 42***36 | Orifice Plate | 4 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 03 Electric System : 65 Windshield-Wiper - Washer System
| 01***16 | Bolt, Mounting Transmission Control Switch | 4 |
| 01***05 | Nut,(For Air Conditioner Less), Nut | 4 |
| 08***34 | Tie, Cable | 3 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 03 Electric System : 74 Battery
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 4 |
| 04***10 | Clip | 1 |
04 Transmission, Universal Joint
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 04 Transmission, Universal Joint : 61 Axial Piston Pump
| 42***05 | Solenoid Valve | 1 |
| 42***10 | Plug | 1 |
| 42***11 | Plug | 5 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 04 Transmission, Universal Joint : 83 Clutch
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 8 |
| 01***25 | Bolt,Sight | 12 |
| 42***10 | Coupling/Clutch | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 04 Transmission, Universal Joint : 98 Axial Piston Engine
| 42***62 | Grub Screw | 2 |
| 42***63 | Nut | 2 |
| 42***18 | Plug | 2 |
05 Rear Axle
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 05 Rear Axle : 43 Rear Axle
| 01***90 | Screw | 8 |
| 42***00 | Nut | 16 |
| 42***00 | Rear Axle | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 05 Rear Axle : 44 Axle Insert
| 42***55 | Shim | 0 |
| 42***56 | Shim | 0 |
| 42***57 | Shim | 0 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 05 Rear Axle : 46 Brake
| 42***74 | Bevel Gear | 1 |
| 42***75 | Shank | 2 |
| 42***76 | Shim | 4 |
06 Disc Wheel, Chain
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 06 Disc Wheel, Chain : 77 Disc Wheel
| 42***10 | Valve | 4 |
| 42***10 | Rim | 4 |
| 42***30 | Rim | 4 |
07 Steering
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 07 Steering : 07 Steering Cylinder
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 42***20 | Stud | 4 |
| 42***60 | Plain Washer | 2 |
08 Front Axle
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 08 Front Axle : 00 Front Axle
| 42***00 | Nut | 16 |
| 42***00 | Front Axle | 1 |
| 42***90 | U Bolt | 2 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 08 Front Axle : 01 Axle Insert
| 42***51 | Screw | 2 |
| 42***54 | Drive | 1 |
| 42***55 | Shim | 6 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 08 Front Axle : 02 Differential
| 42***74 | Bevel Gear | 1 |
| 42***75 | Shank | 2 |
| 42***76 | Shim | 4 |
09 Brake System
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 09 Brake System : 00 Brake System
| 01***30 | Bolt,Stopper | 1 |
| 01***16 | Bolt, Mounting Transmission Control Switch | 2 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
10 Frame
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 10 Frame : 02 Frame
| 01***40 | Screw | 2 |
| 01***45 | Washer,(For Travel Motor) (Not Show) | 2 |
| 42***30 | Stopper | 2 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 10 Frame : 03 Hinge
| 01***30 | Screw | 1 |
| 01***80 | Screw | 1 |
| 01***35 | Bolt,R.H. (For Add. Air Compressor) | 4 |
11 Drivers Cab
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 11 Drivers Cab : 00 Safety Cabin
| 42***52 | Bushing | 5 |
| 42***72 | Gasket | 4 |
| 42***87 | Plain Washer | 5 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 11 Drivers Cab : 01 Safety Cabin, Doors
| 01***85 | Screw | 2 |
| 01***25 | Screw | 1 |
| 01***10 | Screw | 2 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 11 Drivers Cab : 11 Soundproofing Of Cabin
| 42***53 | Plug | 4 |
| 42***63 | Ashtray | 1 |
| 42***66 | Washer | 4 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 11 Drivers Cab : 17 Safety Cabin, Steering
| 42***58 | Screw | 2 |
| 42***66 | Washer | 6 |
| 42***75 | Disc | 4 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 11 Drivers Cab : 27 Drivers Seat, Attaching Parts
| 01***25 | Screw | 4 |
| 01***25 | Washer,Spring?For Additional Rear Lam | 2 |
| 01***12 | Washer,(With Body Positioner) | 4 |
13 Hydraulic System
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 13 Hydraulic System : 00 Pumps For Hydraulic System
| 42***20 | Hydraulic Pump | 1 |
| 42***01 | Shaft Seal | 1 |
| 42***02 | Circlip | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 13 Hydraulic System : 06 Oil Tank
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(Without Rops Guard? Canopy) | 3 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 13 Hydraulic System : 26 Lift Cylinder
| 42***00 | Lift Cylinder | 1 |
| 42***21 | O-Ring | 1 |
| 42***22 | Pilot | 1 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 13 Hydraulic System : 28 Bucket Cylinder
| 42***00 | Bucket Cylinder | 1 |
| 42***22 | Pilot | 1 |
| 42***25 | O-Ring | 1 |
15 Equipment
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 15 Equipment : 00 Bucket
| 42***10 | Bucket | 1 |
| 42***70 | Chopper | 1 |
| 42***90 | Reinforcement | 2 |
Komatsu : Wa70-5(W/Cab S/N H50051-Up) : 15 Equipment : 02 Quick Change
| 42***30 | Change Device | 1 |
| 42***31 | Disc | 2 |
| 42***32 | Pin | 2 |
Frequently asked questions
What engine powers the WA70-5?
The machine is equipped with a Komatsu 4D95-LE3, a 4-cylinder, naturally aspirated diesel engine with a displacement of 201 cu in (3.3 L).
What is the operating weight of this loader?
The operating weight varies by configuration/series, typically ranging between 5,060 kg (11,130 lb) and 5,100 kg (11,244 lb).
What model replaced the WA70-5?
The Komatsu WA70-6 is a related successor in the loader lineup.
What WA70-5(W/CAB S/N H50051-UP) owners discuss
What are the primary engine specifications for the Komatsu WA70-5 (S/N H50051-UP)?
What should be monitored regarding the hydraulic system performance?
What are the critical maintenance intervals for the drivetrain and axles?
Are there specific electrical precautions to follow when replacing fuses?
What maintenance is required for the air conditioning and cooling systems?
What critical safety check must be performed when servicing the driver's cab?
What should be inspected when purchasing a used WA70-5 (S/N H50051-UP)?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific WA70-5(W/CAB S/N H50051-UP) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.