Front Double-Piston Brake Caliper Overview, S4 And S6: Notes
WARNING:
When repairing, use all the parts in the repair kit.
NOTE:
Coat brake cylinder, piston and piston seal lightly with brake assembly lube.
- Dust cap
- Install on bleeder valve
- Bleeder valve
- Coat threads lightly with brake assembly lube
- Brake caliper housingWARNING:
Do not separate the halves of the caliper housing (with internal serrations) from each other. If the protective cap for the guide bolts is damaged, replace the brake caliper.
- Piston seal
- Remove with screwdriver Removing piston seals
- Install carefully by hand
- Piston
- Force out of brake caliper housing with compressed air Pressing pistons out of brake caliper housing individually with compressed air CAUTION:
- Risk of accident! Apply pressure gradually. Guard against sudden release of the piston.
- Place wooden board into the recess of the caliper housing to catch the pistons so that they are not damaged Pressing piston out of cylinder with compressed air .
- Piston diameter: 42.8 mm (1.685 in.)
- Installing Installing piston outer seal on piston , Installing piston outer seal lip into cylinder groove and Installing piston
- Coat piston with brake assembly lube
- Force out of brake caliper housing with compressed air Pressing pistons out of brake caliper housing individually with compressed air
- Piston outer seal