A3 Quattro L4-2.0L Turbo (CBFA) (2009)
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Place protective seal with outer sealing lip on piston.
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Using trim removal wedge (3409), insert the inner sealing lip into groove in cylinder.
‹› When doing this hold piston in front of brake caliper housing.
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Set resetting and extracting tool (T10165) against piston of brake caliper housing.
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Screw piston into housing by turning knurled wheel clockwise.