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Old 02-04-2012, 09:54 PM   #1
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Default Squealing belt

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So I have an 87 Cherokee 4.0 and I've replaced the belt, sanded the pulleys tried to align the power steering pulley etc and it still squeals when it's warmed up. Any ideas?
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Old 02-04-2012, 10:03 PM   #2
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Some people say tighten it until it almost breaks.
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Old 02-04-2012, 10:09 PM   #3
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Or get a goodyear gatorback and call it a day
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Old 02-04-2012, 10:16 PM   #4
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tried to align the PS pulley? is the harmonic balancer separating, causing misalignment?
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Old 02-04-2012, 11:55 PM   #5
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Balancer seems to be running true. I replaced ps pump and I've aligned and realigned pulley thinking didn't place it right. Do you happen to know the part number for the gatorback belt? Thanks fellas.
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Old 02-05-2012, 01:17 AM   #6
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Quote:
Originally Posted by rfaceplant View Post
Howdy all
So I have an 87 Cherokee 4.0 and I've replaced the belt, sanded the pulleys tried to align the power steering pulley etc and it still squeals when it's warmed up. Any ideas?
This site has good info on noisy belts. It's a Dodge truck, but still applies.

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Old 02-05-2012, 06:02 AM   #7
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Yes, sure still could be a bad belt or one that is not fully tensioned, as the belt on the 4.0 does need to be pretty tight.

But also keep in mind that ANY component along the route of the serpentine belt will start to get noisy as they start to fail. Usually I remove the belt and "hand spin" each of those components to see if I can feel if there is one that isn't turning smoothly......
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Old 02-05-2012, 06:21 AM   #8
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As mentioned re-check the tightness as these things need to be way tighter than it seems. In the meantime go to the auto parts store and grab some belt dressing. A quick easy temporary (Or sometimes permanent) fix.

http://www.permatex.com/products/aut...ditioner_b.htm
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Old 02-05-2012, 08:22 AM   #9
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Belt dressing doesn't work on serpentine belts. Find the actual cause of the noise.
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Old 02-05-2012, 09:04 AM   #10
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Belt dressing doesn't work on serpentine belts. Find the actual cause of the noise.
I agree. Belt dressing can actually make things worse on a serpentine belt as the dressing hangs on the belt and picks up debris as you drive it. The can of belt dressing I have in my garage (for v-belts only) actually says "not for use on serpentine belts" right on it.....
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Old 02-05-2012, 09:29 AM   #11
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Or get a goodyear gatorback and call it a day
Who still sells Goodyear belts? Autozone used to but switched to dayco a few years ago. Gatorbacks were great belts
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Old 02-05-2012, 10:28 AM   #12
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What's funny is that amazon.com has them, I just need to measure the belt or get the part number so I can order the right one.
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Old 02-05-2012, 01:38 PM   #13
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Quote:
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I agree. Belt dressing can actually make things worse on a serpentine belt as the dressing hangs on the belt and picks up debris as you drive it. The can of belt dressing I have in my garage (for v-belts only) actually says "not for use on serpentine belts" right on it.....
It does? What brand is it? I have a can of Gunk brand belt dressing and it says "For V and flat belts" and it has a picture of a serpentine belt right on it.
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Old 02-05-2012, 03:49 PM   #14
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Just because it says it can be used dosn't mean it's ideal
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Old 02-05-2012, 03:54 PM   #15
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Go to rockauto.com they sell gatorbacks.
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