System Description

Control Valve

Mounted on the upper side of the gearbox is a control valve that is moved horizontally by a pin on the pinion holder to shift fluid pressure to the right or left side of the Power Cylinder when the steering wheel is turned. It has thrust pins at both ends, and two inter-connected reaction chambers, one on each side. Each reaction chamber contains a pair of spring loaded plungers that rise against right and left thrust pins. The valve body fluid passages are controlled by the control valve.