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

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks

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.

Unfasten plug connection (1) and disconnect.

Pull off supply hose (2) on clutch hydraulics.

Fig 1: Pulling Off Supply Hose On Clutch Hydraulics

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) and lift off expansion tank.

Installation:

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.
Press expansion tank (2) vertically onto brake master cylinder.

Fig 3: Pressing Expansion Tank Onto Brake Master Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.