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Komatsu WA480-6 Features Large Capacity Torque Converter

Wed April 28, 2010 - National Edition
Construction Equipment Guide

The WA480-6 has a newly designed large capacity torque converter that provides the machine with increased tractive effort, improved acceleration and improved hill climbing ability.
The WA480-6 has a newly designed large capacity torque converter that provides the machine with increased tractive effort, improved acceleration and improved hill climbing ability.

With a net power of 299 hp (223 kW), the Komatsu WA480-6 has an operating weight of 55,920 to 56,340 lbs. (25,364 to 25,555 kg) and a dumping clearance of 10 ft. 6 in. (3.2 m) when equipped with a 6.0 cu. yd. (4.6 cu m) general purpose bucket.

The new wheel loader comes equipped with KOMTRAX technology, which monitors a variety of machine operating information including daily fuel consumption, working hours, hour meter, location, cautions and maintenance alerts. Utilizing wireless technology, KOMTRAX relays this information to a secure Web site for analysis, thereby increasing machine availability, reducing the risk of machine theft, and allowing for remote diagnosis by the distributor.

New Large Capacity Torque Converter

The WA480-6 has a newly designed large capacity torque converter that provides the machine with increased tractive effort, improved acceleration and improved hill climbing ability. Because of the increased tractive effort, the machine has greater productivity in V-cycle applications. The improved hill climbing ability allows the machine to up-shift gears faster due to improved acceleration, achieve higher gear ranges and maintain higher ground speeds when working in load-and-carry or hopper feeding applications. In either application, production is increased and fuel consumption maximized resulting in improved fuel efficiency, according to the manufacturer.

Increased Fuel Efficiency and Maximum Productivity

The WA480-6 is powered by a Komatsu SAA6D125E-5 diesel engine with an electronic heavy duty common rail fuel injection system that provides fast throttle response while optimizing fuel combustion. The engine is EPA Tier III emission certified without sacrificing power or machine productivity.

The loader’s fuel consumption is reduced because of the high-torque engine and the large capacity torque converter, as well as the closed-center load sensing system (CLSS).

With two selectable operating modes that adjust easily, the engine adapts to different working conditions.

The E mode provides maximum fuel efficiency for general loading and the P mode has a maximum power output for hard digging operation and hill climbing. For load-and-carry or hill-climb operations, the torque converter with optional lock-up transmission provides increased production efficiency, reduced cycle times and optimum fuel savings. An Eco indicator informs the operator when the machine is maximizing fuel efficiency.

New Large Cab

The WA480-6 is designed with a wide and spacious cab to reduce operator fatigue and increase productivity. The wide pillar-less flat glass affords increased front visibility, and the wiper arm covers a large area for visibility on rainy days. The cab’s low-noise design of 72 dB(A) creates a comfortable working environment. With its built-in ROPS/FOPS structure to protect the operator, the new roomy cab is mounted with Komatsu’s viscous mounts to keep noise at a minimum and provide a low-vibration, clean operating environment. The layout of the cab also has been improved for easy access to levers, and the air conditioner has been relocated to the front of the cab to increase seat reclining and backward slide adjustment.

Easy Operation

With new pressure proportional control (PPC) control levers, the operator can easily operate the work equipment with fingertip controls, reducing fatigue and improving fine work equipment control and productivity. The work equipment lever console can be adjusted, as can the large arm rest to provide the operator with a variety of comfortable operating positions.

The automatic transmission with electronically controlled modulation valve (ECMV) makes operating functions easier and more efficient and ensures a more comfortable ride, according to the manufacturer.

It automatically selects the proper gear speed based on conditions such as travel and engine speed, and includes two switches that make operating the machine easier. With the touch of a finger, the kick-down switch automatically downshifts from second to first when beginning the digging cycle; in reverse, it automatically up shifts from first to second. The kick down switch also acts as a power-up switch when the machine is already in first gear or economy mode. Conversely, the hold switch keeps the transmission fixed to either the third or fourth gear speed when auto shift is selected.

Easy Maintenance

Komatsu manufactures all machine parts with an integrated production system. Equipped with the Komatsu equipment management monitoring system (EMMS), the operator stays informed of all machine functions on the easy-to-read monitor. An automatic reversible hydraulic radiator fan allows the operator to quickly clean out the cooling system at preset intervals or with the flip of a switch.

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