Help loosing the tension pulley nut for the Alternator belt on a 98 I30

[kiddkill]

I'm getting frustrated, I know how I'm supposed to replace the Alternator belt, but I am having no luck getting any grip on the nut to loosen the idler pulley. A socket won't fit, and I can't get a good grip on it with my 14mm wrench do to tight quarters and the nut being recessed a little in the pulley. I there a special tool or wrench that would help, or by all means any helpful hints??

[kiddkill]

Ok, I figured this one out, but now after I set the tension and tighten the pulley nut back it squeeks, I loosen the pulley but don't touch the tension nut and it doesnt squeek anymore. Why would that be?