34 31 500 Removing and installing/replacing tandem brake master cylinder
Special tools required:
- 32 1 270
Necessary preliminary tasks:
- Read and comply with GENERAL NOTES .
- Remove the EXPANSION TANK .
- Remove the BATTERY .
Attention!
Before beginning repair work, fully press the brake pedal several times to reduce the vacuum pressure in the brake servo.
Attention!
Do not bend brake lines.
Close off brake lines and tandem brake master cylinder with seal plugs 32 1 270.
Unfasten brake lines (1).
Release nuts (2) and feed tandem brake master cylinder out of brake servo.
Installation:
Replace sealing ring (1).
Check rubber plugs (2) and replace if necessary.
When inserting the tandem brake master cylinder (1) into the brake servo, make sure the anti-roll bar link of the brake servo and the tandem brake master cylinder meet each other on one level.
Insert nuts (1) and tighten.
Replace self-locking nuts.
Tightening torque, refer to: 34 31 1AZ .
Fit brake lines (2) and tighten.
Tightening torque, refer to: 34 32 1AZ .
Required follow-up work:
- Install the EXPANSION TANK .
- Install the BATTERY .
- Bleed BRAKE SYSTEM with DSC.