34 33 505 Removing And Installing/Replacing Brake Booster
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Necessary Preliminary Tasks:
- Read and comply with General Information. Refer to 34 00 ... GENERAL INFORMATION .
- Remove equipment compartment bulkhead. Refer to 51 71 085 REMOVING AND INSTALLING CENTER OF ASSEMBLY COMPARTMENT BULKHEAD .
- Remove brake master cylinder. Refer to 34 31 505 REMOVING AND INSTALLING/REPLACING MASTER BRAKE CYLINDER FOR DSC .
- Removing non-return valve. Refer to 34 33 071 REPLACING VACUUM HOSE FOR BRAKE BOOSTER (N73) .
- Remove pedal trim. Refer to 51 45 185 REMOVING AND INSTALLING/REPLACING TRIM FOR PEDAL ASSEMBLY .
Observe safety instructions on raising the vehicle. Refer to 00..... LIFTING VEHICLE WITH A LIFTING PLATFORM .
Detach retaining clip (1) on brake pedal.
IMPORTANT:
Make sure retaining clip (1) is correctly seated. If necessary, replace retaining clip (1).
Unscrew nuts (2).
Installation:
Replace self-locking nuts.
Tightening torque, refer to 35 11 1AZ in PEDALS - TIGHTENING TORQUES .
Pull out pin (3).
IMPORTANT:
Do not use any force when removing and installing the brake unit; the brake unit can be damaged under certain circumstances.
Unclip brake lines from holder and carefully press to one side.
IMPORTANT:
Brake lines must not be bent!
Carefully pull the brake unit out of the bulkhead swing it out.
IMPORTANT:
Brake booster is highly sensitive to damage in area (3). Such damage may cause the brake booster to malfunction.
Installation:
Install the adapter plate (1). Replace the gasket (2) if necessary.