34 33 505 Removing and installing or replacing brake booster

Necessary preliminary work:

Read and comply with GENERAL INFORMATION.
Remove the TANDEM BRAKE MASTER CYLINDER.
Remove the HYDRAULIC UNIT .
Remove the left TRIM PANEL FOR PEDAL MECHANISM

IMPORTANT: There is a risk of switching the two brake lines (1)!
After removing tandem brake master cylinder and hydraulic unit, both brake lines (1) are exposed.
The installation position (see graphic) of the brake lines (1) must be marked prior to removal.

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Pull the retaining clip (1) off the brake pedal and pull out the locking pin.

Unscrew nuts (2).

Installation note:

Replace self-locking nuts.

Tightening torque, refer to: 35 11 1AZ .

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IMPORTANT: Do not use any force when removing and installing the brake booster; the brake booster can be damaged under certain circumstances.
Brake lines must not be bent.

Remove non-return valve (1) from brake booster.

Carefully pull brake booster (2) out of bulkhead and tilt out.

If necessary, disengage brake line from holder on bulkhead and press slightly to one side.

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Installation note:

Seal (1) must always be replaced.

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