Fig. Accessory serpentine belt routing-3.8L engine (click for zoom)
Using a 15mm wrench attached to the drive belt tensioner pulley, rotate
the tensioner clockwise to release the tension. Remove the drive belt
from the pulley. When installing the new drive belt, ensure that the
drive belt is routed correctly and note the position of the indicator
mark on the tensioner.
Fig. Drive belt tensioner wear indicator marks
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