today at the gtg i went to go sang an other member and what i thought was my water pump letting go was my crank pully. all the bolts are there tight but the pully is cocked to one side is there a key way that holds in it i wont know what i got till the truck is my garage where i have acess to all my tool but i was able to pull down the sheild i drove the truck almost a mile it i seen it over heat so i hope i didnt damge any thing any idiea what let go