the bottom pulley on my 3vz-e has pulled out about an inch. it pulled out yesterday when i was turning into my drive way, so i popped the hood and the fan was rubbing on the bottom pulley. now all the belts are crooked, i tried to tighten the pulley but it only went in a fraction of an inch. what would cause this?

 

you may have spun your crank bolt out.....go look at it...are the any missing bolts?

 

i didnt notice any missing bolts. i'm attempting to take the pulley completely off to get a better look but it was getting late. the crank boltt was still there