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

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW 650i, 2009 BMW M6, 2009 BMW 650i, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove wheels . See 36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL

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

After completing tasks, bleed brake system . See 34 00 025 REPLACING FLUID IN ABS/ASC+T BRAKE SYSTEM

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: Locating Pedal Prop & 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 34 21 3AZ . See 34 21 REAR BRAKE

Release brake hose (2).

Installation:

Tightening torque 34 32 5AZ . See 34 32 BRAKE LINES

Unfasten brake hose at connection point to brake line.

Tightening torque 34 32 1AZ . See 34 32 BRAKE LINES

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 Brake Hose & Screws

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.