34 31 181 Removing and Installing/Replacing Expansion Tank for Hydraulic Brake Actuation

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







Necessary preliminary tasks:
- Read and comply with General Information.
- Remove left microfilter housing cover
- Vehicles with optional equipment 106 or 109, remove expansion tank reinforcement.

NOTE:
Extract brake fluid out of expansion tank. Use a suction bottle used exclusively for drawing off brake fluid.
Do not reuse drawn out brake fluid.







Unfasten plug connection (1) and disconnect.
Remove wiring harness from holder (2).
Release screw (3) and lift off expansion tank vertically in upward direction.







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