Maeda MK0003, Руководство по обслуживанию, Страница: 83 / 348

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3. Fixed horse power variable mechanism
The pump capacity can be varied with the variable tilt angle of swash plate, and the fixed horsepower control is
effected by the simple, directly responsive tilt angle varying mechanism of the swash plate.
In this pump, the center of rotation of the swash plate is in the ball on the back.
The load F1 from the piston side is located in the direction indicated in the figure below, and generates a rotational
moment in the clockwise direction as looked at the swash plate. Against this setup, a spring to set the horsepower to
a specific value is installed toward the opposite direction and set to a specified load.
Since the above-mentioned moment increases with the increase of pressure and it deforms the spring to decrease
the tilt angle of the place, the discharge rate is resultantly suppressed to maintain a fixed horsepower.