Idler pulley/serpentine noise - JeepForum.com

 
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post #1 of 2 Old 04-16-2012, 11:23 PM Thread Starter
Willie_Maker
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1986 CJ7 
 
Join Date: Apr 2012
Location: Klamath Falls
Posts: 1
Idler pulley/serpentine noise

Hi all, Im new to the group here, but have been looking for a little while for info on my new, to me, 86 CJ-7. I found a sweet heart locally and picked it up for a project with my son, 13yrs old. Its almost all original with the exception of a lift and 33's, 237K miles. runs great.



Issue: I replaced the serpentine belt and the new one immediately started squealing. Ive tried belt dressing, nope. Adjusting the idler pulleys alignment, nope. Tightening/loosening the belt, nope. A little bar soap on the belt has helped but only temporarily.

Question: one of the idler pulleys is plastic, and one metal. The plastic one looks like its not original and is a little wobbly, minimally, and appears to have been melted slightly by rubbing on the outside washer/plate that is held by the mounting bolt. Is the plastic pulley original? and why would soap quiet the belt if the pulley is messed up???

Thanks

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post #2 of 2 Old 04-16-2012, 11:39 PM
only in a jeep cj
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1986 CJ7 
 
Join Date: Jun 2001
Location: Mobile
Posts: 5,229
A buddy has an 85 CA edition CJ-7 with the serp belt. Both of his idler pullies were noisy and he had trouble finding the correct (plastic) ones with the inside bearings to match his old one. He found ones that were so close, they worked fine. As far as soap, don't know

Ed
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
2003 Inca Gold TJ Rubicon
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