alright so when i did my swap i undid my AC lines

now im selling my car and i gotta put the ac back on for the new buyer.

now there has been nothing in the system for about 4 months, i have oil and 4 cans of R134a. the system will be completly vaccumed and all that.

do i have to worry about the AC compressor going bad. i dont want to do all this and it end up being bad. i know it wont cut on if there is no pressure in the lines, so do i have to worry?

also is there a way to take it off the car and check to make sure its good, like engage the clutch and spin it or something