A8L Quattro Sedan V8-4.2L (BVJ) (2007)
Brake Caliper: Overhaul
Front Brake Caliper Piston, Brembo 18" Brake Caliper
Front Brake Caliper Piston, Brembo 18" Brake Caliper
Special tools, testers and auxiliary items required
‹› Wedge (3409)
‹› Piston resetting tool (T10145)
Removing
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Force piston from brake caliper housing, one at a time, using compressed air.
Only one piston can be pressed out at a time. Secure opposite piston in brake caliper housing using piston resetting tool - a -. Block the other pistons,
e.g. using wood blocks - b -. In addition, place a wooden board - c - in front of the piston resetting tool so that the piston will not be damaged when
pressed out.
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Remove seal with (3409).
When removing, make sure that surface of cylinder is not damaged.
Installing
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The surface of the piston and seal must only be cleaned with mineral spirits and then dried.
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Thinly coat piston and seal with lithium grease (G 052 150 A2) before inserting.