A8 Quattro Sedan V8-4.2L (AUX) (2001)
Fig. 1 Pressing pistons from brake caliper housing using compressed air (individually)
Note:
Insert brake piston resetting tools -b- and -c- in piston. Place a wooden board -a- into the recess of the caliper housing to catch the pistons so they are
not damaged.
Only one piston can be pressed out at a time-hold the other piston securely in brake caliper housing using piston resetting tool.
Fig. 2 Removing outer sealing rings using 3409 wedge
Note: When removing, make sure that surface brake caliper is not damaged.
Fig. 3 Removing inner sealing rings using 3409 wedge
Note: When removing, make sure that surface of brake caliper is not damaged.
Installing
-
Apply thin coat of brake cylinder paste G 052 150 A2 to piston and protective seal before installing.
-
Use only appropriate solvent to clean surfaces of piston and protective seal, then dry.