Help (what am I missing?)

Trying to change my belts and I seemed to have loosened everything but the AC won’t budge. Can’t get the belt off. I’ve loosened these 4 bolts and no slack, what am I missing?

Trying to change my belts and I seemed to have loosened everything but the AC won’t budge. Can’t get the belt off. I’ve loosened these 4 bolts and no slack, what am I missing?