Description & Operation

The power steering system consists of a power rack and pinion steering gear, hydraulic pump, fluid reservoir, valve body unit, vehicle speed sensor and hoses. Power assist is proportional to vehicle speed and steering load. Assist is high when vehicle speed is low, and low as vehicle speed increases.

The vehicle speed sensor is a trochoid-rotor hydraulic pump, driven by a speedometer gear in the transmission. When vehicle is in motion, speed sensor pump relieves a portion of the hydraulic pressure, reducing power steering assist.