serpetine belt

hrRoss · Jun 23, 2022

have a cummins 4bt motor in a white americon 60 tractor, replaced belt today with new one. when started up the belt rides up on fan pully.is this caused by the belt tensioner, or the fan being off. neither one seems to be loose? im afraid thats what happened to the last one,as it was coming apart on the edge.

Bob Bancroft · Jun 24, 2022

I say tensioner. I have replaced them for that reason, even though they still seemed to have plenty of tension.

NFI · Jun 24, 2022

I agree. Replace the tensioner.

timcasbolt · Jun 24, 2022

(quoted from post at 03:06:16 06/24/22) have a cummins 4bt motor in a white americon 60 tractor, replaced belt today with new one. when started up the belt rides up on fan pully.is this caused by the belt tensioner, or the fan being off. neither one seems to be loose? im afraid thats what happened to the last one,as it was coming apart on the edge.

hat was a known issue on my 05 Dodge/Cummins.

showcrop · Jun 24, 2022

I agree with the tensioner. Once you get it out you will most likely find a loose bearing.

greg oliver · Jun 24, 2022

Hross I would guess tensioner. I replaced belt and tensioner on a Case 580 E backhoe that has the Cummins 3.9 a few years ago. What color and year is your American 60? Mine is green and white ordered in March of 1989 and delivered in July of 1989.

hrRoss · Jun 24, 2022

It's a red 60, weird cause it doesn't have a 3 spd. Also have silver 80, green 60, and just bought green 80 fwd. Green 60 will turn yellow if time doesn't run out

greg oliver · Jun 24, 2022

Hross saw a red one up at MacFaddens in Sharo Springs N.Y. around springtime. Werent only a few painted red? If you didnt know there is a White American owners Facebook page.

MARK ROBKE · Jun 24, 2022

Usually the tensioner is worn where it pivots against its spring and this kicks it out sideways enough to cause the belt to run off center. Mark.

Hobo,NC · Jun 25, 2022

If a tensioner does not resolve the issue they do make a belt aliment checker.

https://www.amazon.com/Dayco-93874-Timing-Belt-Diagnostic/dp/B009TM6EFA

A good shop should have one. Those belts have to run straight are it will eat them up. A common issue on other makes is the balancer
slips out of alignment.

https://www.cumminsforum.com/threads/bad-harmonic-balancer-look-at-the-pics.2270258/

NFI · Jun 27, 2022

I agree. Replace the tensioner.

serpetine belt

hrRoss

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Bob Bancroft

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NFI

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timcasbolt

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showcrop

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greg oliver

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hrRoss

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greg oliver

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MARK ROBKE

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Hobo,NC

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NFI

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