General Information

Power Steering Gear & Pump - 4.0L:

Power Steering Gear & Pump - 2.5L:

This vehicle has manual steering or optional power steering. 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 recirculating ball type gear. 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 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.
The power steering system consists of.
- Hydraulic pump
- Recirculating ball steering gear
- Steering column
- Steering linkage