It's a combination of electric and hydraulic. A unit sits behind the blade on the bracket. A 12 volt motor about the size of a starter motor drives a built-in hydraulic pump. There are hydraulic cylinders that lift the blade and angle it. A T handle "joy stick" in the cab controls the lift and the blade angle through armored cables similar to shift and throttle controls on a boat.
A micro switch in the controller applies power to the unit and runs the motor only when hydraulic pressure is called for.
Make sense? I once had a unit that was pure hydraulic and used a Chrysler power steering pump for a hydraulic pump. Which required a bracket for the pump and another belt off the crank pulley to run it.
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Today's Featured Article - Tractor Profile: Allis-Chalmers Model G - by Staff. The first Allis-Chalmers Model G was produced in 1948 in Gasden, Alabama, and was designed for vegetable gardeners, small farms and landscape businesses. It is a small compact tractor that came with a complete line of implements especially tailored for its unique design. It featured a rear-mounted Continental N62 four-cylinder engine with a 2-3/8 x 3-1/2 inch bore and stroke. The rear-mounted engine provided traction for the rear wheels while at the same time gave the tractor operator a gre
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