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09-14-2005, 10:44 PM
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#1 |
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Better late than never
 
Join Date: Dec 2001
Location: Columbus, IN
Posts: 324
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Aluminum pulley squeal
I have replaced the water pump pulley now a couple of times because of belt squealing when running the a/c. I have replaced the belts, which temporarily solves the problem, but the squealing returns after a few days.
I have tried different belt manufacturers, but they all do it. I have also tried belt dressing to no avail. It is only when running the a/c. Does anyone else have this problem too. Is the only cure a steel pulley?
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1970 C/10 SWB Stepside |
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09-14-2005, 11:06 PM
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#2 |
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Registered User
Join Date: Apr 2004
Location: Nebraska
Posts: 335
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Your compressor is low on freon or you have a bearing going out on your compressor....or...your A/C is freezing up and making the pump work too hard.
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09-14-2005, 11:16 PM
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#3 |
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18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
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Try cleaning the pulleys/belt with a brake clean . Lightly sand the aluminum pulley with scotch brite or fine sand paper. I had a alt belt squealing problem and alum waterpump pulley and I had to really tighten the belt to get it to stop. Another old trick is put a little copper coat on the belt as a dressing, it has a grit in it that helps. M2C
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2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home... 
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09-15-2005, 09:08 AM
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#4 |
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Senior Member
Join Date: Mar 2003
Location: Sparks, NV
Posts: 790
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how is the alignment on the belts? Sometimes by going with a different pulley it off-sets the Alignment.
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