third time belt change >a week

Someone please help. We've replaced the belt 3xs. 3xs shredded or broken. Alternator bolts and bracket removed, tighted and replaced. Power steering pump bolts replaced and tigtened. The pulleys are all okay. Check'd for the correct belt, (ac-fact install or dlr install) factory installed ac and the correct belt used. What else could it be??????????

Someone please help. We've replaced the belt 3xs. 3xs shredded or broken. Alternator bolts and bracket removed, tighted and replaced. Power steering pump bolts replaced and tigtened. The pulleys are all okay. Check'd for the correct belt, (ac-fact install or dlr install) factory installed ac and the correct belt used. What else could it be??????????

tension is important when installing a belt

make sure is not too loose or not too tight

and also make sure u r installing it correctly according to the diagram

make sure every pulley runs freely without the belt