The compressor and drier have both been replaced by the previous owner on my 97 F250 351, there is still good pressure in the system but the a/c compressor clutch is not engaging and is making a rattling noise from the pulley assembly that goes away if you hold it. Has anyone removed a a/c compressor clutch assembly? I would like to learn how, I know a salvage yard would not charge much and this could be a very cheap fix for my a/c. I've thought about just going to a salvage yard with some snap ring pliers/misc tools and trying it out without knowing what I am doing but I am sure there is some kind of tool I will need.

 

https://www.ford-trucks.com/forums/9...or-clutch.html Have a read here, may help some.