Allroad Quattro V6-2.7L Turbo (APB) (2002)
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Install so that inner sealing lip enters groove in brake caliper housing see Fig. 4
Front 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
Fig. 1 Pressing pistons from brake caliper housing using compressed air (individually)
Notes:
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Insert brake pad -b- in piston. Place a wooden board -a- into the recess of the caliper housing to catch the pistons so they are not damaged.
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Only one piston can be pressed out at a time. Hold the other piston securely in brake caliper housing using piston reselling tool.
Fig. 2 Removing sealing rings using 3409 wedge
When removing, make sure that surface of cylinder is not damaged.
Installing
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Apply thin coat of brake cylinder paste G 052 150 A2 to piston and protective seal before installing.
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Use only appropriate solvent to clean surfaces of piston and protective seal, then dry.