If you start unbolting everything that it touches, sooner or laters it well fall off Now just because it don't work doesn't mean its broke and useless. When the system is low on Freon it want cut on at all. Maybe the clutch on the A/C compressor is out on it and just spending 100.00 on a new one would get you freezing again
Its pretty simple process, i suggest prepping by going over the bolts well with something like wd40 here's a link i have to someone's page http://www.ford23.com/removeac.shtml