54 37 190 Removing and installing/replacing hydraulic cylinder for left/right roof shell

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 FLOOR TRIM PANEL
Partially open the roof
Remove ROOFLINER FOR ROOF SHELL AT REAR
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

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

Fig 2: Opening Screws On Hydraulic Unit

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IMPORTANT: Never lift off ball socket with engaged clamp.
Before installation, grease ball socket if necessary.

Installation note:

Pack grease into two opposite positions in socket.

The grease spreads after installation on the ball pin all round in the ball socket.

Fig 3: Removing Bearing Journal

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Dismantling/installing ball sockets:

Push on clamp in direction of groove with screwdriver
Lift off ball socket from ball pin
Slide clamp back
Fit ball socket on ball stud and snap into place with force

Fig 4: Lifting Ball Socket From Ball Pin

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Removing hydraulic cylinder:

Slide retaining clips (1) upwards.
Detach ball sockets at sides.
Feed out hydraulic cylinder.

Fig 5: Identifying Retaining Clips

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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.

Fig 6: Detaching Hydraulic Lines

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Detach cable strap.

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

Detach hydraulic lines (2).

Right side only:

Unlock plug connection for hall effect sensor and disconnect.

Installation note:

Carry out function check
Check FLUID LEVEL .