34 11 552 Overhauling Left Or Right Front Brake Caliper (Brake Caliper Removed)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 9 316

WARNING: In the following work step, large forces occur at the brake caliper piston (up to more than 2800 N).
Risk of injury!

NOTE: Use repair kit

Press off dust sleeve (1).

Installation:

Dust sleeve must be correctly seated in groove (2) of piston and groove (3) of brake caliper.

The area between the dust sleeve and the brake caliper housing must be kept dry. It must not come into contact with Ate brake cylinder paste or brake fluid so as to ensure that the dust sleeve is perfectly seated.

Fig 1: Dust Sleeve, Piston And Groove

G06211773

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: To protect the pistons, place a protective plate (2) (e.g. hard wood or hard felt) in caliper recess.
Do not grip piston with fingers - risk of trapping!

Check guide sleeves (1), fitting repair-kit guide sleeve if necessary.

Carefully force piston out through connection bore with compressed air.

Installation:

Do not jam piston when pressing in.

Fig 2: Guide Sleeves And Protective Plate

G06211774

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Machining of cylinders and pistons is not permitted.

Carefully remove sealing ring (1) special tool 00 9 316 .

Clean cylinder bores and parts with alcohol and dry with compressed air.

Thoroughly inspect cylinder bore, piston and flange surfaces.

Install new seal.

Installation:

Fig 3: Sealing Ring

G06211775

Courtesy of BMW OF NORTH AMERICA, INC.

Apply a light coat of Ate brake cylinder paste to cylinder bore, piston and seal, refer to BRAKES - OPERATING FLUIDS .

Special tools required:

00 9 316

WARNING: In the following work step, large forces occur at the brake caliper piston (up to more than 2800 N).
Risk of injury!

NOTE: Use repair kit

Check guide sleeves (5), fitting repair-kit guide sleeve if necessary.

Fig 1: Guide Sleeves

G04726605

Courtesy of BMW OF NORTH AMERICA, INC.

Carefully force piston out through connection bore with compressed air.

To protect piston, place a protective plate (e.g. hard wood or hard felt) in caliper recess.

Do not grip piston with fingers - risk of trapping!

Fig 2: Removing Piston From Connection Bore Using Compressed Air

G04754188

Courtesy of BMW OF NORTH AMERICA, INC.

Press off dust sleeve (1).

Fig 3: Dust Sleeve

G04726607

Courtesy of BMW OF NORTH AMERICA, INC.

Carefully remove sealing ring (1) special tool 00 9 316 .

Clean cylinder bores and parts with alcohol and dry with compressed air.

Thoroughly inspect cylinder bore, piston and flange surfaces. Machining of cylinders and pistons is not permitted.

Install new seal.

Installation:

Apply a light coat of Ate brake cylinder paste to cylinder bore, piston and seal, refer to BRAKES - OPERATING FLUIDS .

Fig 4: Removing Sealing Ring

G04726608

Courtesy of BMW OF NORTH AMERICA, INC.

Fit dust sleeve (1) in annular groove of piston (2).

IMPORTANT: Do not twist brake piston.

Press piston into cylinder bore.

Evenly press dust sleeve (1) onto brake caliper housing as far as it will go.

Installation:

The area between the dust sleeve and the brake caliper housing must be kept dry. It must not come into contact with Ate brake cylinder paste or brake fluid so as to ensure that the dust sleeve is perfectly seated.

Fig 5: Identifying Dust Sleeve And Piston

G04749392

Courtesy of BMW OF NORTH AMERICA, INC.