Steering Gear: Description and Operation

The rack and pinion steering gear has an integral power assist system and valving. The valve body bolts onto the rack at the upper pinion bearing. The pressure line and return line from the pump attach at the valve body. A sliding type spool valve directs high pressure hydraulic fluid through external oil lines to the correct side of the rack piston. The spool valve is moved by a pivot lever/collar assembly that fits over the upper pinion shaft.