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Fan belt keeps snapping!!
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Old 27 Jun 2012, 08:02 PM   #1 (permalink)
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Fan belt keeps snapping!!

The fan belt on my 2003 blobeye has snapped twice in about two months now. It seems the right part (5PK880) and the right tension (about half inch play), although right before it has snapped both times it has squealed a couple of days prior on starting the engine.

Would the belt snap if it became too loose? Could a new belt really become that loose in a month? I'm thinking I might do it up tighter when I change it this time, but I'm always weary of doing it up too tight incase the bearings fail on the alternator?
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Old 28 Jun 2012, 12:43 AM   #2 (permalink)
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Re: Fan belt keeps snapping!!

check the tensioner pulley the bearing is probably on its way out in the pulley. The reason why the belt is snapping is because you are over tightening it and the tensioner pulley bearing gets stressed and weirs out and eats through the belt

you should be able to twist the 180 degree angle after its tighten with your hand.
i have don this more then a few times when customers try to change the belt them self.

hope it helps.



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Old 28 Jun 2012, 06:05 AM   #3 (permalink)
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Re: Fan belt keeps snapping!!

What part do you mean by tensioner pulley? The three pulleys are the crank shaft, alternator and power steering pump right? And what part should i be able to move 180°after the belt is in place and tight? Thanks for your help so far.
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Old 29 Jun 2012, 12:16 AM   #4 (permalink)
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Re: Fan belt keeps snapping!!

Hi really sorry i thought you meant the fan belt. but what your talking about is the power steering belt.

sorry left the post a little late fogot to mention belt befor 180 degree.

you should be able to twist the belt 180 degree angle with your hand after its tighten to make sure its not over tightened whether its the fan belt or the power steering belt.

all so check your power steering pulley they normally buckle up as well.

hope this helps.



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