How do you replace an alternator belt for a 1984 Oldsmobile delta 88 royale?

To replace the alternator belt on a 1984 Oldsmobile Delta 88 Royale, first, ensure the engine is off and cool. Locate the alternator and loosen the mounting bolts to create slack in the belt. Remove the old belt by sliding it off the pulleys, then install the new belt by threading it around the pulleys according to the routing diagram (usually found under the hood). Finally, adjust the alternator to tension the belt, tighten the mounting bolts, and double-check the belt's alignment before starting the engine.