| [GMCnet] Re: belts slip [message #369237 is a reply to message #369235] |
Wed, 23 March 2022 23:26   |
powwerjon
Messages: 849
Registered: March 2013
Karma:
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Senior Member |
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If you can slip a 10MM open end wrench over the belt then you have the
"NEWER" style belts that have been reduced in width. They will not work as
well as the old 1/2" wide belts. I have found a number of NAPA belts that
are still the correct width. For alternator belts I use a A56 belt and in
about 3 weeks I will be home and access to my parts book that have belt
numbers that will work. Again these new metric belts ride too low in the
pulley sheave and have very little contact to transmit the needed power.
Regards,
J.R. Wright
GMC Great Laker
GMCGL Tech Editor
GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 29.5' Stretch
75 Avion (Under going Frame up Restoration)
On Wed, Mar 23, 2022 at 4:36 PM Larry wrote:
> James Hupy wrote on Wed, 23 March 2022 12:32
>> More often than not, if the belt is riding in the bottom of the sheave,
>> that means one of two things. Sides of the belts are worn out. Or, the
>> usual culprit is that the sheaves ( pulleys) are worn out. I have taken
>> them off, and threw them in my glass bead cabinet and roughed up the
> sides
>> of the sheaves. Replaced the belts, and belt squeal went away until the
>> sheaves polished back up. No substitute for replacing sheaves with unworn
>> ones, though.
>> Jim Hupy
>> Salem, Oregon
>
> Or maybe you just have the wrong belt? To narrow?
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
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