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Old June 25th, 2007, 09:55 AM   #1
halycon
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Nasty belt squeak...

Last January my serpentine belt snapped due to the idler pulley seizing, but unfortunately the idler pulley was pulled back into the bracket it's bolted on and shaved off some of the metal. So now my idler pulley sits a bit crooked but somehow the belt stays on perfectly. The belt's been fine ever since then, but yesterday it started squeaking again.

Here's my question: do you think it's the idler pulley being misaligned even if the belt's not working it's way off of the pulley? If you DO think it's the misalignment, any ideas of how to fix it?

I was thinking I could shim the pulley with a shaved down washer to accommodate for the offset. JB Weld was another idea, but I wasn't sure how well that would work. Any others? I really don't feel like replacing that whole damn bracket.
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Old June 25th, 2007, 07:12 PM   #2
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you could remove the bracket and clean it, then use metal set or JB weld in the worn part to bring the worn spot out, flat file and then reinstall. should get everything level again.
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Old June 27th, 2007, 02:35 PM   #3
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God damn it amazes me out the tiniest bit of anything else can make a belt squeak. I think it was just remnants of brake cleaner on the pulleys or something (from when I cleaned them before) that was causing it. All of a sudden it's quieted down a lot and it keeps getting better as if something is just burning off.
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Old June 27th, 2007, 05:30 PM   #4
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if the pully is running crooked the belt will heat up and stretch to a tappered run. it is not the perminant fix you want because it will shorten the belts life.
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Old July 17th, 2007, 08:17 AM   #5
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Well, the squealing came and went after getting better initially... I finally figured out what was causing it though. After some very careful listening with my handy little spa tubing, we determined the A/C compressor clutch was the culprit. So we replaced my A/C compressor, which unfortunately did not fix the squealing (but I needed a new one anyways), but did calm it down a bit.

After some wheeling at Silver Lake this past weekend, I blew some power steering fluid past a seal and that ended up making the belt squeak even more. Well it never stopped, so we figured it was something out of alignment. After a lot of looking around, we realized it was the mount for the A/C compressor being crooked. So we shimmed the back end up a bit with some washers and *presto* no more squeak.
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