34 11 000 Removing and installing/replacing brake pads on both disc brakes (6 pistons Brembo)

WARNING: This page is about a different variant/trim than selected.

IMPORTANT:

Brake pad wear sensor: after removal it must be replaced (brake pad wear sensor loses its retention capability in the brake pad).

IMPORTANT: So as not to damage the surface coating, if possible do not mechanically clean the guide surfaces for the brake pads on the brake caliper mounting bracket. Instead, clean with brake cleaner BMW part no. 83 19 2 154 780.

Necessary preliminary tasks:

Remove FRONT WHEELS .
Remove brake pad wear sensor.

IMPORTANT:

If the brake pads are old, they may be bonded to the brake pistons by an adhesive layer.

After the brake pads are detached from the brake pistons, they must be replaced with pads that are no longer bonded.

They must not be reused!

Brake pads that are not bonded can be reinstalled.

These brake pads must be greased with NEVER-SEEZ compound (see BMW Electronic Parts Catalogue) before they are reinstalled.

Drive out retaining pin (1) in direction of arrow and remove retaining spring (2).

Fig 1: Identifying Retaining Spring And Retaining Pin

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Release screws (1) and remove brake caliper rearwards(2).

NOTE: Picture shows E7x M

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

Installation note:

Replace screws (1).

Tightening torque: 110 Nm

Fig 2: Releasing Screws To Remove Brake Caliper Rearwards

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Press back brake pads and piston with special tool 34 1 050 and remove brake pads!

NOTE: Picture shows E7xM

IMPORTANT: When forcing piston back:

Pay attention to brake fluid level in expansion tank; brake fluid that spills over will damage paintwork.

Fig 3: Pressing Back Brake Pads And Piston With Special Tool (34 1 050)

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Installation note:

Rear side of brake pads (1) must be thinly greased with NEVER-SEEZ compound (see Electronic Parts Catalogue).

Fig 4: Identifying Rear Side Of Brake Pad

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Check minimum brake disc thickness:

Position special tool 34 1 280 at three measuring points in area (1) and measure.

IMPORTANT: New brake pads may only be fitted if the brake disc thickness is greater than the minimum brake disc thickness (MIN TH).

Fig 5: Checking Brake Disc Thickness Using Special Tool (34 1 280)

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Picture shows E7xM

So as not to damage the surface coating, if possible do not mechanically clean pad guides (2). Clean with a brake cleaner instead.

IMPORTANT: Do not grease brake pad guides (2).

Fig 6: Identifying Brake Pad Guides

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Observe installation sequence:

Insert brake pads in calliper
Install brake calliper on wheel carrier

Drive out 3rd retaining pin at bottom of brake calliper side (1) up to limit position.

Fig 7: Locating 3rd Retaining Pin At Bottom Of Brake Calliper Side

Courtesy of BMW OF NORTH AMERICA, INC.

Insert 4th retaining spring in brake calliper (see graphic) and press in far enough to drive in top retaining pin.

Graphic shows: retaining spring and retaining pin in installation position

Fig 8: Inserting 4th Retaining Spring In Brake Calliper

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: After completing repair work:

Fully depress brake pedal several times so that brake pads contact brake discs.
When installing new brake pads at front and rear axles, brake fluid level must be brought up to "MAX" marking.
Read and comply with notes on BRAKING IN NEW BRAKE DISCS / BRAKE PADS .