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2012 cummins belt tentioner failure

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G.ratliff User avatar

on our 2012 blue birds over 30% of them have failed.. the little nub or nipple that holds the belt tensioner in place have sheared off one was a road failure that destroyed the belt and fan clutch harness-holder (PART THAT KEEPS CLUTCH FROM SPINNING AND IS ALSO PART OF THE HARNESS)
The others were found as the belt was squeaking before it destroyed anything. ... so if your belt is squeaking check the back side of the tensioner (you can see the nub or lack of the nub by looking from under the bus)
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Posts: 30
Location: 1315 route 96 owego N.Y. 13827

Great pic's thanks...


Posts: 32
Location: 6268 Muskrat Bay Road, Brewerton, NY 13029
Repeat failure on the same bus. checked today after 1000 miles and found nub broke off again.


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