Hey all, my belt squeals like crazy. I put lube on it to make sure that it was indeed the belt. Soon as the lube hit the belt it went away.

New belt tensioner (Gates (china)) so I don't think it would be that. The belt is really tight. Should I buy a new belt?

It was just a crappy V-belt but it never made that noise before. I had to swap it because my cummins tensioner went bad. Thinking I should have went cummins on that part..

 

V belts, including the serpentine multi-v belts, work well because of the angle of the sides. Belt tension is multiplied by the inclined plane of the sides, greatly increasing the traction of the belt.

When the pulleys wear to the point that the belt is riding on the bottom of the grooves, either the pulley or the belt, that traction greatly diminishes, and the belt slips.

I have seen perfectly good alternators fail to put out because the pulley was worn and the belt couldn't get traction.

Look at the pulleys. Neither the top's between the grooves, or the bottom of the grooves should be shiny. If they are, it's worn out.

 

Thank you! I will check this out.

 

I had the same problem, changed the 1 year old belt.
There is a heavy duty version available, I think it was a Gates
It is green colored. My squeek seems to have gone away.

 

try that goodyear gatorback belt it stop the squeal on my detroit in my freightliner it was the only one that would and I changed everything like you did

 

here is the green belt

http://www.gates.com/brochure.cfm?br...cation_id=2743

 

you can buy the gator backs off ebay. find your part number on rockauto or advance auto and then just type it on ebay

 

I bought me a new Gatorback Goodyear belt for my 93 off Ebay, they are not expensive.

 

I got the HD green one from genos garage and it came with a little plastic depth gauge to check the wear on the groves inside the belt. My squeak went away with green belt.

 

Another nod to the Gatorback Goodyear, .... solved my similar problem

 

It's old but gold! Thanks for info guys

 

I had no idea there was such a thing as a Gator Back serpentine belt.

 

Old forum posts for the win!

 

Someone was able to get the search function to work. Me? Not always the the best at that.