Power Steering Pump: Description and Operation

A vane-type constant displacement pump provides the hydraulic pressure for the system. The 4.6L engine uses a TC series pump.

The following list identifies the major components of the power steering pump:
- The drive shaft
- The pump housing
- The pump ring
- The pressure plate
- The thrust plate
- The control valve

The rotor and vane assembly The reservoir is separate from the housing and internal components.

In order to limit the pump pressure, this system uses a pressure relief valve.