Soft Top Hydraulic System, Function

A Left soft top hydraulic cylinder (open/close)
B Right soft top hydraulic cylinder (open/close)
C Left soft top bow hydraulic cylinder (open/close)
D Right soft top bow hydraulic cylinder (open/close)
E Soft top compartment cover hydraulic cylinder (open/close)
F Soft top bow hydraulic cylinder (release/lock)
G Soft top compartment cover release/lock hydraulic cylinder
A7/5m1 Motor
Y56/2 Soft top control valve block (7 connections)
Y56/2y1 Open soft top
Y56/2y2 Close soft top
Y56/2y3 Open soft top bow
Y56/2y4 Close soft top bow
Y56/2y5 Open soft top compartment cover
Y56/2y6 Open soft top bow catch
Y56/2y7 Open soft top compartment cover catch
a Connection for rollbar valve block (RB, Y57)
b Diagnostic connection for pressure test
c Manually switchable check valve for emergency operation of soft top

Illustrated: Soft top in "completely closed" position

Control of hydraulic cylinders A and B, function
The two hydraulic cylinders (A and B) are always actuated together (i.e. move synchronously in ideal case).

To open the soft top the solenoid valve "open soft top" (Y56/2y1) switches:
Hydraulic cylinders (A and B) are pressurized on the rod side so that they retract thereby opening the soft top.

To close the soft top the solenoid valve "close soft top" (Y56/2y2) switches:
Hydraulic cylinders (A and B) are pressurized on the piston side causing them to extend thereby closing the soft top.

Control of hydraulic cylinders C and D, function
The two hydraulic cylinders (C and D) are always actuated together (i.e. move synchronously in ideal case)

To open the soft top bow the solenoid valve "open soft top bow" (Y56/2y3) switches:
Hydraulic cylinders (C and D) are pressurized on the rod side causing them to retract and opening the soft top bow.

To close the soft top bow the solenoid valve "close soft top bow" (Y56/2y4) switches:
Hydraulic cylinders (C and D) are pressurized on the piston side causing them to extend and closing the soft top bow.

Control of hydraulic cylinder E, function
To open the soft top compartment cover the solenoid valve "open soft top compartment cover" (Y56/2y5) switches:
Hydraulic cylinder (E) is pressurized on the piston side causing it to extend and opening the soft top compartment cover.

To close the soft top compartment cover the solenoid valve "open soft top bow catch" (Y56/2y6) switches:
Hydraulic cylinder (E) is pressurized on the rod side causing it to retract and closing the soft top compartment cover.

Control of hydraulic cylinder F, function
To release the soft top bow the solenoid valve "open soft top bow catch " (Y56/2y6) switches:
Hydraulic cylinder (F) is pressurized on the piston and rod sides causing it to extend releasing the soft top bow.

The soft top bow is locked without actuating any of the solenoid valves.

As soon as the motor (A7/5m1) for the hydraulic unit starts running the hydraulic cylinder (F) retracts thereby locking the soft top bow catch.

Control of hydraulic cylinder G, function
To release the soft top compartment cover the solenoid valve "open soft top compartment cover catch" (Y56/2y7) switches:
Hydraulic cylinder (G) is pressurized on the piston and rod sides causing it to extend and releasing the soft top bow.

The soft top compartment cover is locked without actuating any of the solenoid valves. As soon as the motor (A7/5m1) for the hydraulic unit starts running the hydraulic cylinder (G) retracts thereby locking the soft top compartment cover catch.