Hydraulic Circuits

Hydralic circuits

A Total system
The total system is separated into two main circuits by valve 1 (main valve) in the pump. This allows the roll bar to be actuated without putting the top control system under pressure. The system for supplying the roll bar is supplied with pressure directly from the pump when the button for convenience actuation is pressed. The pump control system is also supplied with pressure when the main valve is opened via the top control. The total system is not under pressure in the "idle position".

B Cloth holding braces and top
4 solenoid valves are installed for the top and cloth retaining brace. These are located in the left valve block. Drive is accomplished by a normal cylinder circuit. During the top closing operation the system is switched over to "differential operation". The valves are switched alternately to move the cloth holding brace.

C Top compartment cover
To save one solenoid valve the rod side of the cover (closed) is connected to the control line (open) for the cover lock, because the cover can be closed only when the lock is open.

D Locks
When the main valve is opened the primary circuit is supplied with pressure. All locks on the rod side are moved in the direction closed without solenoid valves present in between. This also allows the locks to be locked while driving. None of the other functions are possible while driving.
To open the valves (in right valve block) are switched as required (differential circuit). When the coupe roof is removed the roof is lifted by the hydraulic cylinders and positioned on a locked pawl of the lock. After removal the control automatically switches over to cloth top operation.

Circuit diagram, drive, top
"Differential operation" - closing (switch-over)





Circuit diagram, drive, cloth holding brace
"Stop function"





Circuit diagram, drive, cloth holding brace