34 11 519 Removing and installing/replacing left or right front brake caliper

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Necessary preliminary tasks:

REMOVE WHEEL .
Read and comply with GENERAL INFORMATION .

After completing repair work: BLEED BRAKE 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 Pedal Support

Courtesy of BMW OF NORTH AMERICA, INC.

Release retaining screw (1).

Installation note:

Tightening torque: see 2AZ in 34 32 BRAKE LINES .

If necessary, grip at knurling (2).

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

Fig 2: Identifying Retaining Screw And Knurling

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, remove BRAKE PAD WEAR SENSOR .

Lever out retaining spring (1) in direction of arrow towards rear.

Installation note:

Place retaining spring (1) first at top and bottom of brake caliper and then allow to engage in recess (2) of brake caliper housing.

Fig 3: Engaging Recess Of Brake Caliper Housing And Lever Out Retaining Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Remove plastic plugs (1).

Fig 4: Identifying Plastic Plugs

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew guide bolts (1).

Withdraw brake caliper backwards.

Installation note:

Only clean guide bolts; do not grease.

Check thread.

Replace all guide screws which are not in perfect condition.

Tightening torque: see 4AZ in 34 11 FRONT BRAKE .

Fig 5: Identifying Brake Caliper Guide Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Mark any worn brake pads.

Remove brake pads in direction of arrow.

In the event of one-sided brake pad wear, do not change brake pads round.

If necessary, clean BRAKE CALIPER AND BRAKE PAD .

Fig 6: Removing Brake Pads

Courtesy of BMW OF NORTH AMERICA, INC.

Equipment specification, high-speed brake system .

IMPORTANT: Mark any worn brake pads.

Remove brake pads in direction of arrow.

In the event of one-sided brake pad wear, do not change brake pads round.

If necessary, clean BRAKE CALIPER AND BRAKE PAD .

Fig 7: Removing Brake Pads (High-Speed Brake System)

Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks:

REMOVE WHEEL
Read and comply with GENERAL INFORMATION .

After completing work: BLEED BRAKING SYSTEM

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

Fig 1: Locating Pedal Support

Courtesy of BMW OF NORTH AMERICA, INC.

Release union screw (1).

Installation note:

Tightening torque: see 2AZ in 34 32 BRAKE LINES .

If necessary, grip at knurling (2).

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

Fig 2: Identifying Retaining Screw And Knurling

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, remove BRAKE PAD WEAR SENSOR .

Lever out retaining spring (1) in direction of arrow towards rear.

Installation note:

Place retaining spring (1) first at top and bottom of brake caliper and then allow to engage in recess (2) of brake caliper housing.

Fig 3: Engaging Recess Of Brake Caliper Housing And Lever Out Retaining Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Remove plastic plugs (1).

Fig 4: Identifying Plastic Plugs

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew guide bolts (1).

Withdraw brake caliper backwards.

Installation note:

Only clean guide bolts; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

Tightening torque: see 4AZ in 34 11 FRONT BRAKE .

Fig 5: Identifying Brake Caliper Guide Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Mark any worn brake pads.

Remove brake pads in direction of arrow.

In the event of one-sided brake pad wear, do not change brake pads round.

If necessary, clean BRAKE CALIPER AND PADS .

Fig 6: Removing Brake Pads

Courtesy of BMW OF NORTH AMERICA, INC.

Equipment specification, high-speed brake system .

IMPORTANT: Mark any worn brake pads.

Remove brake pads in direction of arrow.

In the event of one-sided brake pad wear, do not change brake pads round.

If necessary, clean BRAKE CALIPER AND PADS .

Fig 7: Removing Brake Pads (High-Speed Brake System)

Courtesy of BMW OF NORTH AMERICA, INC.