Does anyone know how to release the tension to change a 1991 mercury cougar serpentine belt?

pull on it with a socket :)
Does anyone know how to release the tension to change a 1991 mercury cougar serpentine belt?
i own a repair shop,and you take and find a wrench that fits the nut at the tension,r and move it back in the opposite direction,and it will release the tension on it,,then slowly release it until it comes to a stop,,good luck,have a good x-mas.
Does anyone know how to release the tension to change a 1991 mercury cougar serpentine belt?
the idler pulley requires either a 15mm wrench or it may have a square hole where a 3/8s or 1/2 in.ratchet will fit.
Look on the radiator cover there should be a sticker telling you inwhat direction to turn the tensioner. Most tensiones have a 3/8 square in them so you can use a 3/8 ratchet to pull on them to get the belt off.