How do you release the serpentine belt on a ford 2002 7.3 liter diesel?

To release the serpentine belt on a 2002 Ford 7.3-liter diesel engine, locate the tensioner pulley. Using a wrench or a ratchet with the appropriate socket, turn the tensioner counterclockwise to relieve tension on the belt. While holding the tensioner, slide the belt off one of the pulleys, then slowly release the tensioner back to its original position. Finally, remove the belt from the remaining pulleys.