We are very doubtful that the compressor is bad. Most likely only a fanmotor
problem. Dave is right, get it cooling and vending so you understand how it works
before you disassemble.
You have a nice straight machine to start with, hope the rest of the base is
in better shape than the front as far as rust. I have a nice cabinet if you need one.
Ask for help anytime, especially drum removal and re-install.
The picture enclosed if for motivation