SPS Function at 0 MPG
SPS Function at 0 MPGSPS Operation 0 MPH (Part 1 Of 2):
SPS Operation 0 MPH (Part 2 Of 2):
NOTE:
^ Numbers in parentheses ( ) indicate a component or tool in the associated illustration.
^ To find additional descriptive information available on a steering system, locate the required information on the table above, then click on the selected highlighted box to be taken to the next level of information.
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The Speed-sensitive Power Steering (SPS) P-valve (Y10) is fully energized and therefore closed. The reaction chambers are pressure-compensated as the inflow of pressure oil is prevented.
No force is exerted on the reaction piston (4l) and no additional reaction torque occurs. The steering is easy to operate as the steering torque to be applied by the driver, consisting of overcoming the torsion bar spring force, is very low.
A reaction piston (4l), two non-return valves (4m, 4n), a cutoff valve (4p) and two restrictors (8a, 8b) are housed in the rotary slide housing.
The reaction piston (4l) is located above the control bush and connected to it via a ball groove thread (4r). Towards the inside there is a connection with the rotary slide via axially located ball guides (4s).