A8 Quattro Sedan V8-4.2L (AKB) (2002)
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To loosen ribbed belt, turn tensioner clockwise (arrow) with 19 mm ring wrench until the two holes are aligned. Hold tensioner in position with
pin 3204.
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Remove ribbed belt.
Installing
Install ribbed belt in the reverse order of removal, but note the following:
Note: When installing a used ribbed belt, be sure that the belt runs in the correct direction and seats properly on the belt pulleys.
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Install ribbed belt on crankshaft pulley and idler wheels first. Install belt on tensioning roller last.
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To tension ribbed belt, turn tensioner clockwise (arrow) with 19 mm wrench and remove pin 3204.
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Start engine and check that belt runs correctly.
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Install viscous fan with outer ring (fan has left-hand thread).