Function of single-circuit power steering on left lock

W46.20-0015-05

Diagram single-circuit power steering on left lock

End stop valve on left lock

16 End stop valve (left lock)

X Pressure reduction via control valve

W46.20-0031-03

If when the steering is turned to the left a torque is applied which exceeds the preload torque of the C springs, a relative movement occurs between the rotor and stator, which opens the control ports to the working chambers.

Consequently the oil flow from the power steering pump enters the lower working chamber and at the same time the return flow for the upper working chamber is opened.

Steering assistance is initiated by the resultant pressure difference.

If the steering is turned further to the left, the end stop valve is opened just before the end stop. The surplus volume flow enters the return flow, reducing the pressure in the lower working chamber.