How do you replace the alternator drive belt on a 2002 escort 55 diesel van?

To replace the alternator drive belt on a 2002 Escort 55 diesel van, start by disconnecting the battery to ensure safety. Loosen the tensioner pulley using a wrench to relieve tension on the old belt, then remove the old belt from the alternator and other pulleys. Install the new belt by threading it around the pulleys in the correct order, ensuring proper alignment. Finally, tighten the tensioner back into place and reconnect the battery.