Both Front Disk Brakes

Note: After finishing work:
- Operate brake pedal several times to move brake linings against brake disks.
- When installing new brake linings on front and rear axles, you must top up the brake fluid level to the "MAX" mark.
- Hold ignition key for at least 30 seconds in position "1" without starting engine.
- This clears a fault entry in the RAM and prevents the brake wear warning lamp from lighting up again.

Remove wheels.





Lift out retaining spring (1).

Left Side: Disconnect plug connection for brake lining wear indicator.





Remove plastic plugs (2).
Lift brake hose out of bracket.





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

Installation: Only clean guide screws; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

Tightening torque, refer to Specifications.





Turn piston fully back with special tool 34 1 050.

Caution: When forcing piston back:
- Observe brake fluid level in supply tank. Overflowing brake fluid will damage the paintwork.





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

Caution: 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 disk thickness is greater than or equal to the minimum thickness, refer to Specifications.

Note minimum thickness of brake linings, refer to Specifications.

Clean brake linings.

Do not apply grease to brake lining backplate.





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

Clean contact surfaces (2) of brake piston and coat with a thin layer of anti-squeak compound.

Caution: Dust sleeve must not come into contact with anti-squeak compound as it may cause dust sleeve to expand.





Clean contact surfaces (1 - 2) of brake-lining tee heads/brake caliper housing and coat with anti-squeak compound.

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





Clean contact surfaces (3) of brake caliper and coat with a thin layer of anti-squeak compound.





Clean hammer head guides on brake caliper holders and coat with a thin layer of anti-squeak compound.