Despite doing so much, most of us forget the serpentine belt even exists — let alone that its tension matters. But it does. A lot. Too tight and it'll grind bearings to dust. Too loose and you're ...

If you have an internal combustion engine that actually runs, then your camshafts are spinning twice as fast as your crankshaft. Change the rate at which either of the two spins in relation to one ...

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.