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34 51 527 Removing and installing/replacing DSC hydraulic unit: Notes

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks: 

After completing repair work:

IMPORTANT: Do not mix up brake lines.
If necessary, mark before removal.
Brake lines must not be bent.
Close off connecting bores with seal plugs.

Press brake pedal down to floor and secure with pedal support.

NOTE: The brake pedal may only be released when the brake lines are reconnected. This prevents brake fluid from emerging from the expansion tank when the brake lines are opened.
Fig 1: Locating Pedal Support
G08505179Courtesy of BMW OF NORTH AMERICA, INC.

Cut open cable strap (1).

Replace cable straps.

Remove foam block (2).

Lever out penetration (3) and pull out towards front.

Fig 2: Identifying Cable Strap, Foam Block And Penetration
G08505180Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Do not bend brake lines.

Grip at square head (1) and release brake lines (2).

Tightening torque 34 32 1AZ .

Fig 3: Identifying Square Head And Brake Lines
G08505181Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten brake lines (1).

Installation note: 

Tightening torque 34 32 1AZ .

Fig 4: Identifying Brake Lines
G08505182Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Unfasten screws (2).

Installation note: 

Tightening torque 34 51 5AZ .

Remove hydraulic unit (3) towards bottom.

Fig 5: Identifying Plug Connection, Hydraulic Unit And Screws
G08505183Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Unclip brake lines (1) from holder (2).

Fig 6: Identifying Brake Lines And Holder
G08505184Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten brake lines (1).

Installation note: 

Tightening torque 34 32 1AZ .

Unfasten screws (2). Take off holder (3).

Installation note: 

Tightening torque 34 51 4AZ .

Fig 7: Identifying Brake Lines, Holder And Screws
G08505185Courtesy of BMW OF NORTH AMERICA, INC.