34 11 000 Removing and installing/replacing brake pads on both front disc brakes (Brembo)

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

34 1 050
34 1 280

See BRAKES - SPECIAL TOOLS .

IMPORTANT: The brake pad wear sensor must be replaced once it has been removed (brake pad wear sensor loses its retention capability in the brake pad).

Necessary preliminary tasks:

Remove WHEELS
Remove brake pad wear sensor

Release bolts (1) and pull off brake caliper with brake anchor plate towards rear.

IMPORTANT: Tie brake caliper back and do not allow to hang from brake hose.

Installation:

Tightening torque 34 11 2A, see 34 11 FRONT BRAKE

Fig 1: Identifying Brake Anchor Plate Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: When pressing down piston, note brake fluid level in expansion tank.
Overflowing brake fluid will damage the paintwork.

Turn piston fully back with special tool 34 1 050.

Fig 2: Turning Piston Using Special Tool 34 1 050

Courtesy of BMW OF NORTH AMERICA, INC.

Pull brake pads (1) off guide pins (2) and remove.

IMPORTANT: Mark any worn brake pads.
In the event of one-sided brake pad wear, do not change brake pads round.

Observe minimum thickness of brake pads . See BRAKES - TECHNICAL DATA .

Installation:

Clean brake pads, brake caliper and guide pins.

Do not grease backs of brake pads sleeve.

Brake pads must be correctly seated on guide pins.

Fig 3: Removing Brake Pads

Courtesy of BMW OF NORTH AMERICA, INC.

Check minimum brake disc thickness:

Position special tool 34 1 280 at three measuring points in area (1) and measure.
Compare measurement result and lowest value with setpoint value . See BRAKES - TECHNICAL DATA .

Fig 4: Identifying Special Tool 34 1 280 With Measuring Points
Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: New brake pads may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH) (not incl. M vehicles). See BRAKES - TECHNICAL DATA .
In the case of M vehicles and perforated brake discs, new brake pads may only be installed if the brake disc thickness is greater than the minimum brake disc thickness (MIN TH). See BRAKES - TECHNICAL DATA .

NOTE: The minimum brake disc thickness is configured in such a way that it lasts the life of a further set of brake pads (does not apply to M vehicles and perforated brake discs).

IMPORTANT: Do not grease brake pads and guides with anti-squeak paste.

Clean contact surface (1) of brake pistons with brake cleaner.

Fig 5: Identifying Contact Surface Of Brake Piston

Courtesy of BMW OF NORTH AMERICA, INC.

Replace expanding spring (1).

Fig 6: Identifying Expanding Spring

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: After completing work:

When installing new brake pads at front and rear axles, brake fluid level must be brought up to "MAX" marking.
Fully depress brake pedal several times so that brake pads contact brake discs.
Read and comply with notes on braking in new brake discs/brake pads .
When replacing pads, reset CBS display in accordance with factory specification.