S 600 Sedan (140.057) V12-6.0L (120.982) (1996)
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At the same time the pressure oil reaches the end faces of the spool valve and the P valve (Y10) via the throttling ports in the spool valve. Since
the P valve (Y10) keeps the control orifice (Y10a) closed, the same pressure occurs on both end faces of the spool valve (no differential pressure)
and the servo assistance is introduced after overcoming the basic load spring (12) of the spool valve (at low torque, approx. 3 Nm).
HYDRAULIC CONTROL, LEFT LOCK
(Driving Mode)
If hydraulic assistance is introduced during driving, the pressure oil is led into the return via the open control orifice (Y10a) of the Parameter
Steering (PML) P valve (Y10) depending on vehicle speed. As a result of this process, a differential pressure is produced at the end faces of the
spool valve (4) via the fixed orifice (arrow) in the governor slide valve (4a). The higher pressure on the end face of the spool valve selectively
counteracts the torque on the steering wheel on left lock.
The torque to be applied at the steering wheel is adjusted between approx. 2-5 Nm - depending on speed.
HYDRAULIC CONTROL, RIGHT LOCK
