Removing and installing or replacing brake booster (brake servo)
Necessary preliminary work:
- Read and comply with GENERAL INFORMATION .
- Remove the TANDEM BRAKE MASTER CYLINDER .
- Remove HYDRAULIC UNIT .
- Remove left FOOTWELL TRIM .
CAUTION:
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.
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.
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 35 11 1AZ .
CAUTION:
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.
Brake lines must not be bent.
Remove non-return valve (1) from brake booster.
Carefully pull brake servo (2) out of bulkhead and tilt out.
If necessary, disengage brake line from holder on bulkhead and press slightly to one side.
Installation note:
Seal (1) must always be replaced.
Installation note:
If necessary, observe the following when replacing the brake booster:
- Installation sequence: Gasket (1), shim (2), gasket (1).
- Gaskets (1) must always be replaced.