A3 L4-2.0L Turbo (BPY) (2006)
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Loosen bolt from oil pump chain sprocket. Counter-hold at the center bolt for vibration damper.
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Release tension on chain rail using a screwdriver - arrow - and secure it using an Allen wrench - 1 -, across flats 3 mm.
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Remove chain sprocket of oil pump and disengage chain on differential shaft drive.
