Warning: On models with ABS, disconnect the battery before starting work to prevent air from entering the ABS module.
Removal
1. Remove the rear wheel.
2. Disconnect the cable from the handbrake lever on the caliper.
3. To reduce brake fluid loss, remove the brake fluid reservoir cap and seal the neck tightly with plastic wrap or clamp the corresponding brake hoses.
4. Disconnect the brake line from the caliper.
5. Remove the caliper pin bolts and remove the caliper from the vehicle.
Bulkhead
Warning: The handbrake mechanism is not repairable. If it is faulty, the caliper must be replaced.
1. Clean the caliper from dirt and dust.
2. Remove the piston by turning it counterclockwise.
3. Remove the dust boot and piston seal from the caliper cylinder.
4. Remove the caliper pins and pin boots.
5. Clean all components thoroughly in methylated spirits or clean brake fluid. Inspect all components and replace any worn or damaged components.
6. When assembling, make sure all components are absolutely clean.
7. Lubricate the new seal and install it into the groove in the caliper cylinder.
8. Install the dust boot onto the piston and insert the piston into the caliper, turning it clockwise.
9. Replace the pins and covers.
Installation
Installation is carried out in the reverse order of removal.
This article was previously published on the resource: AudiManual.ru