This topic is for cars with Air Conditioning.
From underneath the car, loosen the altnernator bracket lower mounting bolt (see picture).
Loosen, if equipped, the back idler attaching bolt.
Loosen the alternator bracket adjusting bolt.
Adjust alternator using a suitable pry bar. Insert pry bar through hole on bottom of bracket.
When adjusted to desired tension tighten adjusting bolt.
Check tension and adjust if needed.
Tighten adjusting bolt to 18 foot pounds; mounting bolts to 28 foot pounds and back idler to 33 foot pounds.