Replacing Expansion Tank For Hydraulic Brake Actuation

34 31 181 Removing and installing/replacing expansion tank for hydraulic brake actuation

Necessary preliminary tasks
^ Remove lower section of microfilter housing.
^ Read and comply with General Information.





Suck the brake fluid out of the expansion tank. Use suction bottle exclusively to draw off brake fluid.

Important! Do not reuse drawn out brake fluid.





Unfasten plug connection (1) and disconnect.
Release retaining screw (2).

Installation
Tightening torque 34 31 3AZ; Expansion tank to brake master cylinder 8+/- 2 Nm.

Pull expansion tank vertically out of brake master cylinder.





Installation:
Check rubber plug in brake master cylinder for damage and replace if necessary.
Push the expansion tank vertically onto the master brake cylinder.