Removing and Installing the Rear Disc Brake Pads

Removing and installing the rear disc brake pads

Warning:
Danger of accident if brake pads with the wrong brake pad quality are installed!
^ Use only the type-specific brake pads!

The pad backing plates (rear side of the brake pads) must not be greased.

Replace vibration dampers each time the pads are changed.





The damper plates have an adhesive protective film. The protective film must be pulled off before installation.

Removal





1. Remove the retainer (safety bracket) -arrow- and extract the retainer pin inwards.
2. Pull out the warning contact wire on the brake caliper and remove the warning contacts from the brake pad plates.
3. Pull out the warning contact wire on the brake caliper and remove the warning contacts from the brake pad plates.

Note:
^ Replace warning contacts if the core of the wire is worn or worn through.
^ The warning contact can continue to be used if there are only scrape marks on the plastic pail of the warning contact.

4. Remove brake pads with a brake pad puller. Always observe the following important points!

Note:
^ If necessary, remove some brake fluid by suction from the brake fluid reservoir beforehand (brake fluid may escape over the rim of the container!).
^ Set back the brake pads as far as possible with the piston resetting fixture (press back).
^ Pull out brake pads together with the damper plates. If this is not possible (depending on wear of the brake pads), use a spatula to detach the damper plates from the brake pad backing plate before removing the pads.

Installation

Danger:
Danger of accident if old parts are fitted on brake caliper!
^ Fit new expanding spring, new retaining pin and new retainer (safety bracket) on the brake caliper!

Note:
^ Ensure correct brake pad quality. Use brake pads.
^ The pad backing plates (rear side of the brake pads) must not be greased.

1. Before installation of the brake pads, check the wear of the brake discs. For minimum thickness of the brake discs, see Technical data/Brake wear limit. [1][2]Brake Pad
2. If necessary, turn back the piston to its original position using the resetting fixture.
3. Fit new damper plates in the pistons. Remove protective film from the damper plates before installation.
4. Insert the brake pads.





5. Fit new expanding spring, new retaining pin and new retainer (safety bracket) -arrow-. These parts are available as a repair set and must be renewed each time the pads are changed.
6. Insert the warning contact wire and warning contacts.
7. Firmly press the brake pedal several times to position the brake pads on the brake discs.
8. Next, check and if necessary correct the brake fluid level.

Bedding in the brake pads
New brake pads require a bedding-in period of approximately 200 km! Not until then do they achieve their best friction and wear coefficient. During this period, the brakes should be subjected to full stress when traveling at high speed only in emergencies.