The hydraulic pump is a vane-type pump. The fluid reservoir may be separate from the pump depending on the engine application.
There are 2 bore openings at the rear of the pump housing. The larger opening contains the following components:
| • | The cam ring |
| • | The pressure plate |
| • | The thrust plate |
| • | The rotor |
| • | The vane assembly |
| • | The end plate |
The smaller opening contains the following components:
| • | The pressure line union |
| • | The flow control valve |
| • | The spring |
The flow control orifice is part of the pressure line union. The pressure-relief valve inside the flow control valve limits the pump pressure.