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Old 09-29-2001, 02:02 AM
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Join Date: Sep 2001
Location: Queens, NYC
Posts: 158
420SEL A/C Belt Loose

What's the best way to adjust the A/C belt pulley? I put it on using hand tension while someone else tightened the bolt, but it's squealing a little on takeoff from idle.

Is there a special tool or trick?
2003 S500 Black/Charcoal
1990 560SEL 61k Arctic White/Grey

1988 420SEL Black/Palomino Sold @ 85k
1987 420SEL Midnight Blue/Grey
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Old 09-29-2001, 07:44 AM
dpetryk's Avatar
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Join Date: Sep 2001
Location: Houston, Texas
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Just slip a wrench over the pulley bracket just behind the pulley, tension the belt, hold while tightening the nut. There is a flat spot on the braket for just this purpose.
I got too many cars!! Insurance eats me alive. Dave

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