Komatsu WA 400-5 to WA380-3 Active+ specifications

WA 400-5 to WA380-3 Active+: owner reports

Sources: 3 forum discussions about the Komatsu WA320 wheel loaders (WA320-3, WA320-7); heavyequipmentforums.com.

• Komatsu: Transmission slipping and overheating.

Sources: 3 forum discussions about the Komatsu WA380 wheel loaders (WA380-6, WA380-8); heavyequipmentforums.com.

• Komatsu: Codes and a ride-control drop.

History and service record of WA 400-5 to WA380-3 Active+

• WA400-5 working range. Komatsu's WA400-5 brochure gives a 2,985 mm dump height and 1,115 mm reach with a 3.3 m3 bucket, a 2,170 mm tread, 3,300 mm wheelbase and a 6,035 mm turning circle over tyres, and says it can load high-sided semi-trailers with a 28 tonne payload. WA400-5 wheel loader, Komatsu Europe.
• Engine modes. The engine mode switch on the WA400-5 chooses between Normal, which uses a reduced-power map to cut fuel consumption, and Power for hard digging or steep inclines, at 154 kW (208 hp) net and 20,000 kg. WA400-5 wheel loader, Komatsu Europe.
• Payload meter. The payload meter shows a pictorial representation of each bucket load and the material already loaded, can display loaded weight or the amount still to load for a preset target, and stores and prints daily output for five different materials. WA400-5 wheel loader, Komatsu Europe.
• Kick-down switch behaviour. When the operator presses the kick-down switch the alternate pump is switched off so full tractive force is available while lifting the bucket, which Komatsu notes matters when loading feed hoppers on a steep ramp. WA400-5 wheel loader, Komatsu Europe.
• WA380-3 Active+ figures. Komatsu Europe's archive lists the WA380-3 Active+ at 141 kW (192 hp), a 3 to 4.5 m3 bucket and a 14.2 t tipping load. WA380-3 Active+ wheel loader, Komatsu Europe.
• EMMS monitor. Komatsu's WA400-5 brochure describes the EMMS monitor as showing malfunction details in the chosen national language in plain text, with an error memory, self-diagnosis and a service interval display that tells the operator when oil and filter changes are due. WA400-5 wheel loader, Komatsu Europe.
• Gull-wing doors and reversing fan. The WA400-5 has gull-wing service doors giving ground-level access to the daily service points, a radiator fan that reverses from the cabin for dusty work, and an oil cooler and charge air cooler that swing out for cleaning. WA400-5 wheel loader, Komatsu Europe.
• Brakes and frame. A fully hydraulic dual-circuit service brake with multi-disc brakes running in an oil bath is described as maintenance-free, the frame has hinge points far apart to reduce bearing stress in torsion, and multiple-disc limited slip differentials are optional. WA400-5 wheel loader, Komatsu Europe.

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