A8 Quattro Sedan V8-4.2L (AKB) (2002)
Brake caliper piston, removing and installing
Special Tools and Equipment
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3409 wedge
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Brake piston resetting tool
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G 052 150 A2 brake cylinder paste
Removing
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Force piston from brake caliper housing using compressed air.
Note: Place a wooden board into file recess of the caliper housing to catch the piston so it is not damaged.
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Remove seal.
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Use 3409 wedge for this.
Note: When removing, make sure that surface of cylinder is not damaged.
Installing
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Use only appropriate solvent to clean surfaces of piston and protective seal, then dry.
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Apply thin coat of brake cylinder paste G 052 150 A2 to piston and protective seal before installing.