34 51 527 Removing And Installing/Replacing DSC Hydraulic Unit

Necessary preliminary tasks: 

• Read and comply with GENERAL INFORMATION .
• Remove front left rear WHEEL ARCH PANEL .
• Remove left UNDERBODY PANELLING .
• Remove left F12: reinforcement strut.

After completing repair work:

• BLEED BRAKE SYSTEM .

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

Fig 1: Pressing Brake Pedal Down To Floor

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Cut open cable strap (1).

Replace cable straps.

Remove foam block (2).

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

Fig 2: Cable Strap, Foam Block And Lever Out Penetration

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

Tightening torque: 34 32 1AZ .

Fig 3: Square Head And Brake Lines

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Unfasten brake lines (1).

Installation note: 

Tightening torque: 34 32 1AZ .

Fig 4: Brake Lines

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Disconnect plug connection (1).

Unfasten screws (2).

Installation note: 

Tightening torque: 34 51 5AZ .

Remove hydraulic unit (3) towards bottom.

Fig 5: Hydraulic Unit Plug Connection And Screws

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Replacement:

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

Fig 6: Brake Lines From Holder

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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: Take Off Holder, Brake Lines, Screws

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If the control unit is replaced: 

• Carry out programming/encoding.