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Power and speed combined for all grading operations

Power and speed combined for all grading operations
The GD655-3 motor grader from Komatsu has a net horsepower of 180 to 200 hp and is powered by a Komatsu SAA6D114E-3 engine. It has an operating weight of 37,801 pounds and a blade width of 12 or 14 feet. The turbocharged and aftercooled high-pressure common rail fuel injection engine is EPA Tier 3 emissions certified, and remains fuel efficient without sacrificing power or productivity.

The GD655-3 is equipped with the latest Komtrax technology which sends machine operating information to a secure website utilizing wireless technology. Data such as operating hours, machine location and fuel levels are relayed to the web application for analysis. The Komtrax fleet monitoring system increases machine availability, reduces the risk of machine theft and provides a wealth of other information.

Designed and built specifically for Komatsu Motor Graders, the Power Shift transmission feature allows the operator to select the transmission mode to match the job task and lock-up the torque converter or direct drive with the flip of a switch. The torque converter mode gives the operator excellent tractive effort and slow speed, fine control. The direct drive model is ideal for high speed transport or snow removal. Komatsu’s motor graders utilize mold-board geometry, allowing the operator to throw the windrow product to the right side of the unit rather than into the roadway so no additional crews are needed to pick up the spill. A long wheelbase and large blade angle lets the operator achieve a greater moldboard angle, which in turn allows material to easily roll along and off the blade. The extra-long blade cylinders allow the moldboard to reach a depth of two feet, eight inches below grade. State-of-the-art hydraulics maximize speed and responsiveness in all Komatsu motor graders. A closed-centre system of valves allows fluid to flow to each individual implement, making the operation of multiple controls easier than past models. Komatsu also incorporates a variable displacement pump and a load-sensing system, giving the operator the right amount of power needed for the particular situation at low or high engine rpm.

The controls feature short lever throws and low effort in both directions. The proper spacing of the control levers combined with the short lever throws allows the operator to use multiple controls with one hand. The foot-controlled, maintenance-free, hydraulically-operated wet type multiple-disc brakes actuate on the four rear tandem wheels. The parking brake is interlocked with the transmission so when the operator puts the transmission in park the parking brake is automatically engaged. When the operator engages the transmission the parking brake is automatically released so the operator cannot drive through the brake and cause damage to the unit.

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