RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
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Disconnect brake lines -1- and -2- and remove together with rubber grommet.
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Remove brake booster securing bolts -1- (Torx T45).
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Remove brake booster with brake master cylinder.
On vehicles installed with cross brace the cross brace must be removed.
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Removing and installing cross brace.
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Remove securing nuts for brake master cylinder -1-.
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Carefully remove brake master cylinder from brake booster.
Installing
When installing, note the following points:
Note:
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Clean any residual brake fluid off plenum chamber before installing brake master cylinder.
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When assembling brake master cylinder with brake booster unit, make sure push rod is properly positioned in brake master cylinder.
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Adjust brake light switch.
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Bleed brake system.