How to change the serpentine belt on a 1998 Oldsmobile 88?

I just read the solution is to take the lower bolt out of the engine mount on the engine side it has a spacer that comes out letting you slip the belt through and replace it. The tesioner is a small idler pulley at about the 9 o'clock position when fasing the engine. I just used a socket and breaker bar on the bolt on the front of it and gave a dood heave so slack it off and then slid it off the pully. Installing is just the reverse