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A/C clutch, pully grind


 
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gileegan
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Joined: 17 Mar 2006

PostPosted: Wed Mar 22, 2006 4:29 pm    Post subject: A/C clutch, pully grind Reply with quote

My 97xj has started making a scratching/grinding noise in what seems to be the ac clutch/serpentine pully when spinning. Has anyone had issues with this before? What was the result?

E
97 stock xj
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mitchc
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Joined: 31 Oct 2005
Location: Louisiana

PostPosted: Thu Jun 29, 2006 7:08 pm    Post subject: Reply with quote

I am having a similar problem with the ac clutch in my 97 Grand Cherokee but instead of a grind, I get a high-pitch squeal. It did it while I was watching and I saw the clutch stick. I am pretty sure that the problem is the clutch pulley bearings. The squealling is caused by the belt passing over a stopped pulley.

I found another ac/clutch unit from which I want to remove and reuse the clutch pulley but I am having a heck of a time removing the pulley using the specially designed tool borrowed from AutoZone.

In the meantime I spray lubricant into the crevases between the pulley and the clutch and it helps accept when I am making a sharp, low-speed turn. Then it squeals anyway.

With all that said, Your ac unit is probably fine but you may need either another clutch or pulley.
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Ricko70
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Joined: 30 Mar 2006

PostPosted: Fri Jun 30, 2006 10:49 am    Post subject: Reply with quote

Sounds like the compressor is trying to seize. When the clutch engages it takes the load off the pulley bearing and is transferred to the front internal cylinder bearing. It's possible that your compressor is not too far gone though, it may just need some oil and a recharge. You should take it to a a/c shop and save yourself money in the long run.
Just my .02----Good luck
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