34 11 000 Removing And Installing/Replacing Brake Pads On Both Front Disc Brakes (1 Piston)

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:

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 and apply a thin coating of brake pad paste BMW part no. 83 19 2 158 851 (3 g) or 83 19 2 158 852 (100 g).
Spread brake pad paste onto the marked surfaces using a brush!
Observe REGULATION ON APPLYING BRAKE PAD PASTE TO BRAKE PADS AND BRAKE ANCHOR PLATES !

Necessary preliminary tasks:

Remove FRONT WHEELS
Remove BRAKE PAD WEAR SENSOR

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

Installation note:

Attach retaining spring (1) first at top and bottom on brake caliper and then allow to engage in recesses of brake caliper housing.

Fig 1: Removing Retaining Spring

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Remove plastic plugs (1).

Fig 2: Plastic Plugs

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Release guide screws (1) with special tool 34 1 080 . Withdraw brake caliper backwards.

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

Installation note:

Only clean guide bolts; do not grease.

Fig 3: Guide Screws

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Check thread.

Replace all guide screws which are not in perfect condition.

Tightening torque 34 11 4AZ .

IMPORTANT: Mark any worn brake pads.

Remove outer brake pad (1) in direction of arrow.

Force inner brake pad (2) in direction of arrow off piston and remove.

The inner brake pad is seated with a spring in the piston or in the brake caliper housing.

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

Fig 4: Removing Brake Pads

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Observe MINIMUM THICKNESS OF BRAKE PADS .

Clean brake pads.

Do not apply grease to brake lining backplate.

Installation note:

When putting on the brake caliper, it is absolutely necessary to make sure that the brake pad T-head (1) of the outer brake pad is seated correctly on the contact surface (2).

IMPORTANT: With brake pads that are already partially worn, pay particular attention that the position of the outer brake pad in relation to the contact surface (2) is ensured!

Fig 5: Brake Pad T-Head And Contact Surface

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IMPORTANT: When forcing piston back:

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

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

Fig 6: Pressing Back Piston

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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 .

Fig 7: Checking Brake Disc Thickness
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IMPORTANT: New brake pads may only be fitted if the brake disk thickness is greater than the MINIMUM BRAKE DISC THICKNESS (MIN TH).

Check dust boot (2) for damage and replace if necessary.

IMPORTANT: Dust boot must not come into contact with brake pad paste as this may cause the dust boot to swell.

Clean contact surface (1) of brake piston with brake cleaner and apply a thin coating of brake pad paste.

Fig 8: Dust Boot And Contact Surface Of Brake Piston

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Clean contact surfaces (1) and (2) with brake cleaner and apply a thin coating of brake pad paste.

NOTE: Grease contact surfaces on brake caliper at top and bottom.

Fig 9: Contact Surfaces

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Clean contact surface (1) of brake caliper with brake cleaner and apply a thin coating of brake pad paste.

Fig 10: Contact Surface Of Brake Caliper

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So as not to damage the surface coating, if possible do not mechanically clean the guide surfaces (1) for the brake pads on the brake caliper mounting bracket. Clean guide surfaces (1 and 2) with brake cleaner and apply a thin coating of brake pad paste.

Fig 11: Guide Surfaces For Brake Pads On Brake Caliper Mounting Bracket (1 Of 2)

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So as not to damage the surface coating, if possible do not mechanically clean the guide surfaces (1 and 2) for the brake pads on the brake caliper mounting bracket. Clean guide surfaces (1 and 2) with brake cleaner and apply a thin coating of brake pad paste.

Fig 12: Identifying Guide Surfaces For Brake Pads On Brake Caliper Mounting Bracket

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Apply a thin coating of brake pad paste to T-head of inner brake pad in area (1) and (2).

Fig 13: Brake Pad Paste Application Area

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Apply a thin coating of brake pad paste to T-head of outer brake pad in area (1) and (2).

Fig 14: Applying Thin Coating Of Brake Pad Paste To T-Head Of Outer Brake Pad Area

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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" mark.
Read and comply with notes on BREAKING IN NEW BRAKE DISCS/BRAKE PADS .
When replacing pads, reset CBS display in accordance with factory specification.