34 21 745 Removing And Installing Or Replacing Left Or Right Rear Brake Caliper

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove wheels

Observe safety instructions on raising the vehicle. See 00 ... ... LIFTING VEHICLE WITH A LIFTING PLATFORM .

After completing tasks, bleed brake system . See 34 00 050 BLEEDING BRAKE SYSTEM WITH DSC .

Apply pedal prop and depress brake pedal slightly. This prevents brake fluid from emerging from the expansion tank and air from entering the brake system when the brake lines are opened.

Fig 1: Depressing Brake Pedal

Courtesy of BMW OF NORTH AMERICA, INC.

Right side: Disconnect plug connection for brake lining wear sensor.

Unfasten screws (1).

Installation:

Tightening torque. See BRAKES - TIGHTENING TORQUES -- ALPINA .

Release brake hose (2).

Installation:

Tightening torque. See BRAKES - TIGHTENING TORQUES -- ALPINA .

Unfasten brake hose at connection point to brake line.

Tightening torque. See BRAKES - TIGHTENING TORQUES -- ALPINA .

First tighten the brake hose on the brake cover, then tighten connection on brake line.

Install brake hose without torsional stress.

Pull off fist caliper towards rear of vehicle.

Fig 2: Identifying Screws And Brake Hose

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Check routing and securing of brake-pad-wear indicator cable. Check for correct securing with tab of dust cap. It is absolutely essential to prevent the cable on the rim from being scuffed.