1989 Tempo: replace serpentine belt
 

I'm new to this so I posted this in the new members area...figured that might be the wrong place so I am re-posting here: I have a Haynes manual & it doesn't give a good explanation of how to release tension on serpentine belt to get the belt back on...there is a 3/8 in slot on the tensioner...I placed a breaker bar with a 3/8in adapter and was able to pull up slightly to get old belt off but getting new one on has been a problem. Is there a special tool I need? Any suggestions would be appreciated. Thanks, Doug