92 Park Avenue tension pulley

[lampard]

Trying to replace surpentine belt on 92 PA. How do release the tension on the pulley.

[MT-2500]

Put a wrench on the bolt that is in the middle of pulley.
or sometimes thre is a square hole in the tensioner arm that you can put a ratcket or breaker bar in and swing the pulley tenisioner arm.
And a few have a square part on the arm that you can get a open end or pipe wrench on.
Just have a close look at it and it will come to you.