SL 500 (129.068) V8-5.0L (113.961) (2000)
Roll Bar Hydraulic Actuator: Description and Operation
The roll-over bar is driven on the right side by a hydraulic cylinder (2).
Mechanical locking of actuating element
Since the hydraulic circuit is not under pressure when it is not actuated by the convenience feature, the actuating element piston must be locked
mechanically in its lower position (A). It is locked by spring force (4) via balls (5). When the convenience feature is actuated, the locking piston (3) and
the piston (2) are put under pressure and act against the force of the spring releasing the lock (B).