Right to tighten the ball and left to loosen the ball.

Loosen bolt in tension pulley, then loosen tension bolt. Replace belt. Tighten tension bolt. Last, tighten bolt through pulley.

To loosen a tension pulley on a 1991 Chrysler New Yorker, turn the nut in the center of the pulley. This will allow the pulley to slide in the cut-out groove so that the belt will loosen.

socket and force bar on bolt brace against frame and use starter to loosen

Use a 1/2" drive breaker bar in the tensioner.