1997 jeep sahara 4.0 with a/c--- procedure for changing the serpentine belt, please !?

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1997 jeep sahara 4.0 with a/c--- procedure for changing the serpentine belt, please !?
First you need a 15mm socket. There is a idler pully on the drivers side of engine in front of the power steering pump. Loosen the bolt in the center of the pully. Do not take all the way out just loosen a few turns. Then once you have the idler loose you need the 15mm socket and extension. Look down on the back side of the idler kind of on top. THere is a bolt that is about 4 inches long that goes down through the back of the pully. Loosen that bolt and the idler pully will slide down taking tensioin off the belt. Do this until you fel the belt is loose enough to remove. Once you have the belt off put new belt back on follow the diagram on the sticker under the hood. Follow the steps in reverse order to tighten. First tighten the bolt until the belt can be twisted about 1/4 to 1/2 side to side. once the belt is tight enough go ahead and tighten the nut on the idler pully and your done. Before you start it is helpfull to look at the bolt on the back and look where the threads are this helps you to get correct tension. also make sure you have the sticker for the diagram under the hood before you start. If you sont make sure you draw the belt or get one. It can be a pain to put back if you have no diagram. Well sorry so long but wanted to be specific. Good luck.