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Home >> Audi >> 2016 >> S4 Premium Plus, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Body Exterior - Cabriolet) >> 61 - Convertible top >> Convertible top hydraulic system >> Hydraulic system, function overview >> Hydraulic function "open" , convertible top compartment cover open

Hydraulic function "open" , convertible top compartment cover open

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Fig 1: Hydraulic Function "Open" , Convertible Top Compartment Cover Open
GW00020631Courtesy of VOLKSWAGEN UNITED STATES, INC.

Convertible top compartment cover cylinder 

The convertible top compartment cover cylinders are charged with pressure from both sides simultaneously by the energized solenoid valves F1 and F2 and in this way are run out.

The reason for this lies in the larger piston surface in the pressure stage and the different power ratios due to this resulting from the same large pressure charge.

The convertible top compartment cover is raised.

Main cylinder 

Solenoid valves F2 and F3 are energized.

In this way, the main cylinder pressure stages and rebound stages are charged with pressure.

Bracket cylinder 

The two-way valve S1 is charged with pressure from both sides simultaneously via the energized solenoid valves F2 and F3. In this way, it is interconnected and the hydraulic pressure is directed to the bracket cylinder rebound stages.

Through this, the bracket cylinders remain retracted and the bracket is raised.

Component overview Hydraulic system, function overview .