Power Steering System

DESCRIPTION








The power steering system has a hydraulic pump. The pump is a constant flow rate and displacement vane-type pump. The pump reservoir on the 4.0L engine is mounted to the pump body. The 2.5L engine has a remote pump reservoir mounted to the fan shroud.
The steering gear used is a variable ratio recirculating ball type gear. A tilt and non-tilt column provide steering input.

OPERATION
The gear acts as a rolling thread between the worm shaft and rack piston. The worm shaft is supported by a thrust bearing at the lower end and a bearing assembly at the upper end. When the worm shaft is turned from input from the steering column the rack piston moves. The rack piston teeth mesh with the pitman shaft. Turning the worm shaft turns the pitman shaft, which turns the steering linkage.