Can anyone help me. I have a Oct 1993 Charade and i need to know whether the thread on the bolt that holds the bottom pulley to the end of the engine crank shaft has a left hand or right hand thread. Its so damned tight i don't know whether or not i'm making it tighter when i try to turn it. That's the other thing i need to know. How do i prevent the pulley turning when i try to loosen the bolt?