A3 L4-2.0L Turbo (BPY) (2006)
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Proceed as follows:
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Hand-tighten bolts - A -.
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Tighten bolts - arrows - in a diagonal sequence from inside to outside to 15 Nm.
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Turn bolts - arrows - an additional 90 ° (1/4 turn) in a diagonal sequence from inside to outside using a rigid wrench.