S6 V8-4.2L (BBD) (2004)
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Pick up brake piston with normal commercial ratchet attachment and extension (as shown), and press lightly against protective cap.
Note: Keep piston straight while installing, to avoid damaging seal.
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Blow air into protective cap using a compressed air line (not more than 3 bar). Protective cap will spring over brake piston.
Note: Use protective covers.
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Push piston into brake caliper housing by hand.
Note: Inner sealing lip will spring into groove on piston when piston is installed.