Replacing Vacuum Hose for Brake Booster

34 33 071 - Replacing vacuum hose for brake booster (N62)





Necessary preliminary tasks:
- Read and comply with General Information Service and Repair
- Remove design cover Service and Repair
- Remove air-mass flow sensor

Important!
Before beginning work, fully press the brake pedal several times to reduce the vacuum pressure in the brake booster. This makes it easier to remove the PA pipe.

Non-return valve and PA pipe are welded together and are replaced together as a single unit.





Remove microfilter (1).





Release screws and remove cover (1).

Detach non-return valve (2) from brake booster.

Installation:
Check seal in brake booster and replace if necessary.

Make sure cover engages properly.





Unfasten hose clip (1).

Detach PA pipe (2) with moulded hose from vacuum pump.

Installation:
Replace hose clip.





Unclip holder (1).

Disconnect tank vent line at quick-release coupling (2) and lay back over vacuum line.

Feed out vacuum line (3) upwards by turning.