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Home >> BMW >> 2013 >> ActiveHybrid 7 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Repair -- ACTIVEHYBRID 7 >> Brake Lines >> 34 32 881 Replacing front left or right brake hose

34 32 881 Replacing front left or right brake hose

Necessary preliminary tasks: 

After completing repair work: BLEED BRAKING SYSTEM 

Press brake pedal down to floor and secure with pedal support.

NOTE: The pedal support may only be released when the brake lines are reconnected.

This prevents brake fluid from emerging from the expansion tank and air from entering the system when the brake lines are opened.

Fig 1: Locating Brake Pedal Support
G11177976Courtesy of BMW OF NORTH AMERICA, INC.

Detach brake hose (1) from brake caliper.

If necessary, grip at knurling (2).

Installation note: 

Tightening torque 34 32 2AZ .

Fig 2: Identifying Brake Caliper Brake Hose And Knurling
G11177977Courtesy of BMW OF NORTH AMERICA, INC.

Release retaining screw (1). If necessary, grip at square head.

Installation note: 

Position guides (3) correctly in holder (4).

Tightening torque 34 32 1AZ .

Fig 3: Identifying Brake Hose Retaining Screw, Guides And Holder
G11177978Courtesy of BMW OF NORTH AMERICA, INC.

Release brake hose from holders (1).

IMPORTANT: Observe assembly sequence:
  1. Fasten brake hose in holders (1).
  2. Move wheels into straight-ahead position.
  3. Fasten brake hose at pipe/brake hose connection.
  4. Fasten brake hose at brake caliper.

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

Fig 4: Identifying Brake Hose Holders
G11177979Courtesy of BMW OF NORTH AMERICA, INC.