Power assisted steering: Description and operation

DESCRIPTION AND OPERATION

The power-assisted steering system comprises:

• a fluid reservoir located in the engine compartment;
• an engine-driven vane pump, with maximum flow rate and pressure valve;
• a series of connecting pipes between pump - distributor valve - actuating cylinder - reservoir;
• a rack-and-pinion hydraulic steering gear box.

Components of the power-assisted steering system

1. Pump
2. Fluid delivery pipe to the pump
3. Reservoir
4. Fluid return pipe to the reservoir
5. Steering gear box
6. Pressurized fluid delivery pipe

Components of the power steering pump

1. Driveshaft
2. Pump body
3. Vane-type impeller
4. Seal
5. Impeller side plate
6. Regulating valve