RS 6 V8-4.2L Turbo (BCY) (2003)
Brake Caliper: Service and Repair
Front Brake Caliper Piston (HP-2), Removing and Installing
Front brake caliper piston, removing and installing
Special tools and equipment
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3409 wedge
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G 052 150 A2 brake cylinder paste
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T10145 Piston resetting tool
Removing
Fig. 1 Pressing pistons from brake caliper housing using compressed air (individually)
Note:
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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 resetting tool.
Fig. 2 Removing sealing rings using 3409 wedge