The new Komatsu WD600-6 wheel dozer weighs 108,280 pounds and is designed to work with either a straight blade or U blade in many applications. A Komatsu Tier 3, six-cylinder engine produces 502 hp at 1,800 rpm, a significant increase in power over the previous model. It is equipped with innovative new technologies including an electronic control system to optimize vehicle performance; a heavy-duty High Pressure Common Rail Fuel Injection System; a new combustion system for reduced noise and fuel consumption; a cooled Exhaust Gas Recirculation system and an air-to-air charge air-cooling system. The cab features AJSS (Automatic Joy Stick Steering) which allows for easier and more accurate directional control. An EPC (Electronic Pilot Control) mono-lever is provided for efficient control of the work equipment. For dozing applications, a new, large capacity torque converter with lock-up transmission provides increased productivity, faster cycle times and improved fuel consumption. With a 3-element, single stage, double-phase torque converter and a full-powershift, planetary type transmission, travel speeds have increased over the previous model, with a forward top-speed of 23.4 mph and a reverse top-speed of 22.4 mph. A modulated clutch system with variable traction controls controls the tractive effort by allowing the operator to select from 100 percent to 20 percent of the T/C converter output. In limited traction situation, the operator can reduce tire slippage by utilizing the Variable Traction Control system. The modulation clutch, controlled by the left pedal, allows for smooth reduction of speed when approaching a truck or hopper, reduction of shocks when shifting from forward to reverse and can reduce tire slippage as well.
