54 34 009 Removing And Installing/Replacing Hydraulic Cylinder For Right Clamping Bar

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 135i, and 2010 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Follow repair instructions for hydraulic system. Refer to 54 34... Repair Instructions For Convertible Top Hydraulic System .
Open convertible top compartment lid and support with suitable apparatus

CAUTION:

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).

When working on hydraulic system, observe the following:

Hydraulic system must be at zero pressure.
Disconnect supply and return lines as late as possible, with convertible top stowed and in untensioned state.
Shortly before removing lines screw tank on hydraulic control unit open and closed once.

IMPORTANT:

Never lift off ball socket with engaged retainer.

Replaced overelongated retainers.

Before installation, grease ball socket if necessary.

Installation:

Pack grease into two opposite positions in socket.

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

Removing/installing ball sockets:

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

Fig 1: Pushing On Retainer In Direction Of Groove With Screwdriver
Courtesy of BMW OF NORTH AMERICA, INC.

Removing hydraulic cylinder on left or right:

Push on locking clamps (1)
Detach ball sockets at sides.
Feed out hydraulic cylinder.

Fig 2: Pushing Locking Clamps
Courtesy of BMW OF NORTH AMERICA, INC.

Disconnecting hydraulic lines from cylinder:

Detach cable tie.

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

Detach hydraulic lines (2).

IMPORTANT:

Protect joints (lines and cylinder) against dripping fluid, e.g. with a cleaning cloth.

Observe hose markings.

Right hydraulic cylinder only:

Unclip Hall sensor from hydraulic cylinder.

Fig 3: Detaching Hydraulic Lines

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

New hydraulic cylinders are supplied in retracted state.

Check fluid level and top up if necessary. Refer to 54 34... Topping Up/Extracting Fluid, Checking Fluid Level .