Convertible Top Hydraulic Control Unit: Service and Repair

Hydraulic system, servicing




Assembly overview

Note: Convertible top must be removed before removing hydraulic pump.

1 - Ball stud

2 - Rubber washer
- Rubber washer must be pushed onto ball stud -1- before attaching hydraulic cylinder -3-.

3 - Right hydraulic cylinder

4 - Spring clip
- To remove hydraulic cylinder, lift spring clip slightly using a screwdriver and pull cylinder off ball stud.

5 - Ball stud

6 - Clip

7 - Noise chamber

8 - Torx bolt
- 8 Nm

9 - Solenoid valve

CAUTION!
Solenoid valves must only be threaded into the hydraulic pump in activated (energized state) using output Diagnostic Test Mode (DTM).

10 - Sealing ring for solenoid valve
- Replace

11 - Sealing ring for oil reservoir

12 - Oil reservoir
- Lightly oil sealing ring before assembly.
- To assemble, twist oil reservoir while pushing on.

13 - Torx bolt
- 2 Nm

14 - Hydraulic pump
- Remove convertible top before disassembly.
- Removing. Service and Repair

15 - Oil filler plug
- Oil level must be between "MIN" and "MAX" markings.
- Oil for convertible top hydraulics: G 002 000

16 - Insulation

17 - Left hydraulic cylinder
- With connection for microswitch.




Fig. 1 Line routing
- Hydraulic pump with noise chamber -1-.
- Hydraulic line to left cylinder with control wire for microswitch.
- Wires must be unclipped from retaining clamps before removing hydraulic pump.