S4 Quattro Wagon V8-4.2L (BHF) (2008)
13 - Idler roller for ribbed belt
14 - 22 Nm
15 - Cover cap
16 - Ribbed belt
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Check for wear
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Do not kink
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Before removing, mark direction of rotation using chalk or felt-tip marker. Reversing direction of rotation of a run-in belt can destroy the belt
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When installing ribbed belt, make sure it is seated correctly on pulleys
17 - Threaded bushing