01-31-2014, 01:33 PM
Another possibility in addition to a bad brush pulley or bowl bearing is that it could be the belt. There is a slightly raised section on the belt where it is pieced together that can cause that type or sound. Either replacing the belt or flipping it over may take care of it as well.
Rod Clarkin
Excellent Supply 727-821-2020
Excellent Supply 727-821-2020