54 37 188 Removing and installing/replacing hydraulic cylinder for kinematics box on left/right

WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove luggage compartment wheel arch panel on left or right. See REPLACING LEFT/RIGHT LUGGAGE COMPARTMENT WHEEL ARCH PANEL .
Follow REPAIR INSTRUCTIONS FOR HYDRAULIC SYSTEM of soft top and soft top compartment lid

IMPORTANT:

Hydraulic fluid may emerge from the disconnected lines and the open connections on the hydraulic cylinder.

Protect components and work area with suitable materials (e.g. cloths).

Soft top compartment lid tilts shut when system is depressurized and must be supported with suitable auxiliary equipment.

Fig 1: Identifying Convertible Top Compartment Lid

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Hydraulic system must be at zero pressure.
Open screw on hydraulic unit 1.5 turns.

Fig 2: Opening Screws On Hydraulic Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock retaining clip
Turn bearing journal downwards

Fig 3: Turning Bearing Journal Downwards

Courtesy of BMW OF NORTH AMERICA, INC.

Remove bearing journal (1).

Fig 4: Removing Bearing Journal

Courtesy of BMW OF NORTH AMERICA, INC.

Detach retaining clip (1) with screwdriver.

Drive out bolt (2) on side.

Fig 5: Removing Retaining Clip

Courtesy of BMW OF NORTH AMERICA, INC.

Feed out hydraulic cylinder (1).

Unfasten plug connection (2) and disconnect.

Right side only:

Unlock plug connection (3) for Hall-effect sensor and disconnect.

Fig 6: Removing Hydraulic Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement only:

Disconnect hydraulic lines from cylinder.

IMPORTANT: Protect separation points (lines and cylinder) against dripping fluid, e.g. with a cleaning cloth.
Observe hose markings.

Detach cable strap.

Open retainer (1) at bottom/top on cylinder with screwdriver.

Detach hydraulic lines (2).

Fig 7: Detaching Hydraulic Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Carry out function check
Check FLUID LEVEL .