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

WARNING: This page is about a different car, the 2016 MINI Cooper Paceman, 2015 MINI Cooper Paceman, 2014 MINI Cooper Paceman, and 2013 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work:

Read and comply with GENERAL INFORMATION .
Remove cover for cowl panel on left

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.

Unlock plug connection (1) and disconnect.

Pull off supply hose (2) of clutch hydraulic system.

Fig 1: Removing Feed Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) and lift off expansion tank vertically in upward direction.

Installation note:

Tightening torque 34 31 2AZ .

Fig 2: Lifting Off Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Check rubber plugs (1) in brake master cylinder for damage and replace if necessary.
Push expansion tank (2) vertically onto the brake master cylinder.

Fig 3: Pushing Expansion Tank Vertically Onto Brake Master Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.