Belt problems with 7720

gostate

Member
I just went through my third torq sensing countershaft drive belt (H113749) this fall. It is the one that controls your cylinder speed. What do think is my problem?
 
Bad bushings in the center hub of the variable speed sheave. This will allow the sheave halves to cock and then they will pinch the belt sides. I have seen them cause the belt to fail in a few hours of time.
 
took the whole sheave assembly from my parts combine (know to be good) and installed on my 7720. Working so far. Thanks for the advice.
 

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