Brake Master Cylinder, Removing and Installing

Brake master cylinder, removing and installing

Special tools and equipment





^ 3094 Hose clamps

Removing
- Obtain radio code on vehicles with coded radio.
- Disconnect battery.
- Lay out sufficient lint free clothes in area of plenum chamber, engine and transmission.





- Draw off as much brake fluid as possible from brake fluid reservoir using brake filler and bleeder unit VAS 5234.
- Clamp clutch master cylinder supply hose with special tool 3094.
- Disconnect clutch master cylinder supply hose.
- Disconnect connector off float warning indicator sensor.

Vehicles with ABS/EDL/ASR/ESP





- Disconnect connectors (arrows) off brake pressure sensors -a- and -b-.

Continued for all vehicles
- Disconnect brake lines on brake master cylinder and seal brake lines with plugs from repair kit Part No. 1 H0 698 311 A.
- Remove brake master cylinder nuts.
- Remove heat shield, if part of original equipment.
- Carefully remove brake master cylinder out of brake booster.

Installing
- Installation is carried out in the reverse sequence
Observe the following points when installing:
- When installing the brake master cylinder and brake booster, make sure that the push rod is correctly located in the brake master cylinder.
- After installing, bleed brakes.
- Initiate basic settings
Performing self-diagnosis; Introducing basic settings
- A zero compensation of brake pressure sender 1 -G201- and brake pressure sender 2 - G214- must be performed in addition to basic settings on vehicles with ABS/EDL/ASR/ESP.
- After installing, bleed brakes.
- Initiate basic settings.