Climate compressor noises bitte to help !?

Hello you love, have again a Probl. with my Omega 2,5 V6 !! I noticed last week already that something started to clap and squeak, was at the beginning only very quiet, but since today it has become very loud, if my ears do not deceive me then the sounds of the climate compressor should come. Meanwhile it is so when the Kima is out that it is a timidly loud grinding noise to hear, when I then turn it on so the grinding goes into a clapping. Can this be the slip-carp ???? If yes, can one exchange these or otherwise repair any way ??? Can I exchange the compressor myself if all the others try to fail ? Hope it can give me some advice again a clever fox. Thanks already. Greetings Thomas