A 3/8 ratchet head fits in that square recess in the back of the tensioner arm right behind the tensioner wheel, with the tool inserted push down to release pressure off the belt with one hand and slip the belt off with the other hand.

 

I know this is an old thread but thought id update, i originally thought it was the PS pump. It is not. It is the AC pulley making the noise for sure.

I cant seem to find the bearing for sale, cant even find a part number. My local auto store has the clutch and pulley replacement but it does not include the bearing. Is it possible to even get just the bearing?

 

If you can read the number on the seal of the bearing you will find a replacement, last time I replaced a bearing in an idler wheel I took the bearing to a dealer and he found a replacement based on it's dimensions.

 

Here's the Motorcraft OEM pulley for the 2003 model. Should be something around 75 bucks.

Maybe your compressor is shot as well. Does it spin freely?