34 32 881 Replacing front left or right brake hoses

WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: After completing tasks, bleed brake system, refer to 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 when the brake lines are opened.

Fig 1: Depressing Brake Pedal

Courtesy of BMW OF NORTH AMERICA, INC.

Pull brake hose out of holder (1). Detach brake hose from brake line (2).

Installation:

Tightening torque, refer to 34 32 1AZ in BRAKES - TIGHTENING TORQUES - 645CI .

IMPORTANT: Grip brake hose at square head (3) so that connecting piece cannot rotate in retaining bracket.

Detach brake hose from brake caliper (4). Tightening torque, refer to 34 32 4AZ in BRAKES - TIGHTENING TORQUES - 645CI .

Installation:

Fig 2: Detaching Brake Hose From Brake Caliper

Courtesy of BMW OF NORTH AMERICA, INC.

First tighten brake hose on brake caliper. Move wheels into straight-ahead position. Insert brake hose in bracket and screw onto brake pipe.

IMPORTANT: Never twist brake hose when installing it and avoid all contact with parts attached rigidly to the body.