The alignment you're referring to can often be seen by sighting between multiple pulleys. You don't want to see the belt peeking out to the side by even 1/16". If you do, that pulley or the one right before it is turned or tipped a little. That can be due to a worn bearing or by a worn spring-loaded tensioner pulley. That causes the belt to slide across the pulley as it goes around it.
Of course you have to be sure the belt has the proper tension on it first. You should be able to tug on the belt to move the tensioner, but when you release tension, it must pull the belt tight again.
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Tuesday, July 14th, 2015 AT 8:15 PM