WA400-5 Komatsu WA400-5 Specifications & Technical Data (2002—2005)

Simple and convenient access to service

The service doors are designed as gull-wing doors. They allow you convenient and safe access to the daily service points from the ground.

Reversible hydraulic radiator fan and swingout coolers

The radiator fan can be switched to reverse operation from the cabin for work in dusty environments. Furthermore, oil cooler and air to air charge cooler can be swung out for easy access and fast cleaning.

EMMS (Equipment Management Monitoring System)

This completely new type of monitoring system is clearly structured and easy to read because it is directly in the operators field of view. If there is a malfunction, it immediately displays the details in the chosen national language and in plain text in the display field. This system not only has an error memory and a self-diagnosis function, but also a service interval display. This significantly simplifies service work and the operator is notified on time of the regular oil and filter changes. The operator and customer-service engineer are constantly informed about the optimum machine state so that problems don’t even occur in the first place.

Maintenance-free braking system

The fully hydraulic dual-circuit service brake with multi-disc brakes running in an oil bath offers you the highest degree of safety and a long service life. Something new is the fact that the braking system can be operated with even greater precision. Since it functions completely hydraulically, you no longer have the drawbacks of a compressed air braking system. The benefits of the new system are that weathering has no effect on it, it is available for work immediately after starting the engine and it’s maintenance free. The multi-disc internal parking brake is also maintenance free.

Centralised lubrication system as standard

The centralised lubrication system reduces the daily service work to the absolute minimum. Its robust piping with protective equipment in all areas ensures consistant lubrication amounts, operating reliability and electronic monitoring with a malfunction signal in the cabin. This increases the machine’s service readiness and service life while lowering repair and service costs.

High torque at low engine speeds

The output of the Komatsu SAA6D114E-2 low-emission engine is 154 kW (208 HP) at only 2.000 rpm. This means a constant, high power output with a 10% reduction in engine speed, compared with its predecessor. The increased engine torque and the improved torque characteristics, along with the arrangement of the newly introduced “High-Power” torque converter, contribute to a substantial improvement in traction and climbing abilities. In Load & Carry operations, faster work cycles are achieved with simultaneous savings in fuel consumption.

Mode selector switch for the engine

The operator can simply change between two modes depending upon the job. In the Normal mode, fuel consumption is clearly reduced by utilizing a reduced-power characteristic map for the engine, which is beneficial for all general loading work. If the operator switches to Power, he immediately has the maximum power, for instance, for hard digging or driving up steep inclines.

Mode selector switch for the transmission

The transmission of the WA400-5 can also be adapted brilliantly to every need with the selector switch. The transmission selector switch allows the operator to select between manual transmission shifting and three automatic modes (high, medium, and low). You can also find the perfect setting by saving the maximum fuel and the highest power by adjusting the gear-changing time depending upon speed.

Faster Load & Carry with torque converter lockup

The operator may also utilize direct drive in third and fourth gear for optimum efficiency in Load & Carry. Clearly, the speed increases, especially when driving uphill, where the wheel loader travels significantly faster due to the increase in tractive force. At the same time, the converter loss is eliminated, thus clearly reducing fuel consumption.

Automatic transmission with variable transmission cut-off

The electronically controlled automatic transmission with mode selection allows you to conveniently adjust to each job. The operator can continuously adjust the transmission cut-off activated through the left brake pedal, for instance, reacting to high cut-off pressure when excavating or low pressure for smooth braking when approaching lorries.

New 2-stage hydraulic system

The working hydraulic system adapts itself excellently to your specific needs: The main and switch pump together supply great capacity for high-speed loading cycles. The main pump alone supplies a reduced oil quantity for force and the maximum tear-out strength. And there’s something new: when you press the kick-down switch, the alternate pump is switched off. This means that the maximum tractive force is available while simultaneously lifting the bucket. This is important, for example, when loading feed hoppers on a steep ramp.

Reliability right down to the details

All of the hydraulic connections are reliably protected against oil loss by Komatsu’s O-ring seals. Komatsu’s hydraulic cylinders are equipped with special guide rings to protect and support the cylinder rods. The electrical system is also designed for long-lasting operation (without breakdowns) with its dust- and water-proof DT plug-and-socket connections in the wiring harnesses.

Standard Equipment

The WA400-5 is equipped in accordance with the safety regulations of the machinery guidelines 89/392 EWG fi and EN474, and corresponds in its exhaust gas emission values with the regulations of the EC 2000/14, Vlll and EC 97/68 Stage II regulations.

Excellent stability and manoeuvrability

With a tread width of 2.170 mm and a long wheelbase of 3.300 mm, the WA400-5 offers you overwhelming stability in all working situations. The turning circle over tyres of only 6.035 mm means you can work efficiently even in the tightest spaces.

Torsionally resistant frame

The frame design with hinge points far apart guarantees the high stability for the overall construction and reduces bearing stress in the torsional ranges. Steering angles of 40° give the WA400-5 a high degree of manoeuvrability.

Robust HD-axles

The heavy-duty axles allow above-average service life even under the hardest working conditions. The WA400-5 can also have the optional equipment of multiple-disc limited slip differentials to further increase tractive force.

Universal bucket

This type of bucket is impressive because of its excellent penetration and loosening properties and its good material holding properties. This universal bucket can be equipped with flush mount adapters and interchangeable teeth.

Earthmoving bucket

The earthmoving bucket with a one-piece bucket bottom is suited both for earthworks and loading cohesive material. The slanted sides give powerful penetration. It is equipped either with flush mount adapters and interchangeable teeth or also with a rear removable edge.

Rock bucket

V-shaped buckets offer excellent penetration properties for medium heavy-duty rock jobs. Robust hardox design wear plates ensure a long service life. We have a selection of optional equipment with the high wear-resistant KVX cutting tools for extremely abrasive jobs.

Maximum dumping height with High-Lift

The dumping height and reach can be increased for special jobs with the optional high-lift lifting frame. You may increase dumping height by approximately 46 cm and the reach is increased by approximately 12 cm.

A comprehensive range of attachments

The timber grab: With its sturdy structure and its great hydraulic power and a special tilting cylinder, the WA400-5 is also perfectly suited to work in the timber industry. The robust design of the lifting frame and axles ensure maximum durability.