A3 L4-2.0L Turbo (BPY) (2006)
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Replace guide frame screws.
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Gently tighten bolts from inside working toward outside in several stages.
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Tighten bolts in several stages in tightening sequence => [ Guide frame tightening sequence ] See: Service and Repair/Valvetrain Assembly
Overview.
‹› Ensure guide frame is not tilted.
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Then check TDC position of camshafts by inserting Camshaft Clamp (T10252) as far as stop.