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How do you know when your pulleys are worn out

How deep into the pulley should the belt ride?

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Really what the original intended purpose was. Most times you will see the wear pattern.

On mower most v-belt idlers have the back of the belt no deeper than the outside diameter. Engine pulleys vary. If the pulley shows of the belt bottoming out in groove it either worn out, wrong pulley or wrong belt. Flat idler wear similarly just not as noticeable. Most times it is retaining lips or bearings that goes. cIt is the same v-idler when it comes to bearings.

Posted on Apr 23, 2015


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Tensioner belt keeps slipping off front pully

Everett, Do you mean drive belt keeps coming off front pulley?
Possible causes, accumulated dirt/debris above deck or on trans axle, damage,stretched,wrong size belt, belt tensioner seized/missing spring if equipped, belt retainers/guides/keepers damaged /missing/ adjusted to far from pulley, damaged/worn pulleys, loose engine, belt way out of alignment,etc.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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1994 Dodge Caravan Serpentine fan belt will slip off pulleys if a little water is applied. All pulleys have been tested without noise. At start up and while driving a grinding noise is heard-like ball...

Take a good look at the tensioner pulley (the one with the spring) when the van isn't running. You'll notice that the belt is on the very outside edge of the pulley. Once you add water (or hit a puddle) the belt will slip off that pulley. The tensioner arm is worn and needs to be replaced. Since it's worn (the spring has become weak) it's not aligned right and is acting like a cone shaped pulley. As soon as it gets wet it wants to walk off the end.

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Hope that helps. Thanks for using FixYa.

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