34 11 000 Removing and installing/replacing brake linings on both front disk brakes: Installation:

Only clean guide screws; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

Tightening torque. Refer to 34 11 3AZ 34 11 FRONT BRAKE .

Turn piston fully back with special tool 34 1 050.

Fig 1: Turning Piston Fully Back With Special Tool

IMPORTANT: When forcing piston back:

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

Remove outer brake lining.

Fig 2: Removing Outer Brake Lining

Inner brake lining is located with its spring in the piston.

IMPORTANT: Mark any worn brake linings. In the event of one-sided brake lining wear, do not change brake linings round. New brake linings may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH). Observe minimum thickness of brake pads. Clean brake linings. Do not apply grease to brake pad backplate.

Check dust sleeve (1) for damage and replace if necessary.

Clean mounting face (2) of brake piston and apply a thin coating of anti-squeak compound.

Fig 3: Checking Dust Sleeve

IMPORTANT: Dust sleeve must not come into contact with anti-squeak compound as this may cause the dust sleeve to swell.

Clean mounting faces (1) and (2) of brake lining hammer heads/brake caliper housing and coat with anti-squeak compound.

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

Fig 4: Cleaning Mounting Faces Of Brake Lining Hammer Heads/Brake Caliper Housing

Clean mounting face (3) of brake caliper and apply a thin coating of anti-squeak compound.

Fig 5: Cleaning Mounting Face Of Brake Caliper

Clean brake caliper holder at hammerhead guides and apply a thin coating of anti-squeak compound.

Fig 6: Cleaning Brake Caliper Holder At Hammerhead Guides