Over-tensioning shortens not only the life of V-belts but also that of the sheaves, electric motor, and driven equipment bearings. In extreme cases, it can even bend or break a motor shaft.
Q-How do I stop a squealing noise coming from the 3-liter V-6 engine in my 1985 Buick Century? The noise is similar in tone to a bad bearing and seems to be coming from the drive belts. Belt dressing ...