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October 19th, 2007
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Company: Caterpillar Inc
Caterpillar’s seven-model lineup of M-Series motor graders features a joystick-operated electro-hydraulic control system. The M-Series replaced the 10 H-Series models in 2006. The new models include the 120M, 12M, 140M, 160M, 14M, 16M and 24M. The 120M, 140M and 160M have an all-wheel-drive option for improved traction in poor underfoot conditions, such as snow, mud and sand, and for added steering and sidedraft control. The M-Series all-wheel-drive option delivers 42 percent more torque than the H-Series system. The M-Series uses dedicated left and right pumps, which allow independent control of hydraulic flow to each front wheel hydrostatic motor. To compensate for hydraulic power demand, the engine automatically delivers additional horsepower to provide constant net power to the ground. The M-Series all-wheel-drive system also features a new front-wheel-only hydrostatic mode for precision low-speed performance. This mode provides infinite front wheel speed control from 0 to 5 miles per hour for enhanced control when working in tight areas, such as cul-de-sacs.