Greetings my dieselbenz brethren,

W123.133 - 1982 300dD-Turbo

So I bought a new AC Compressor, Dryer and Evaporator. I installed them all, and all was well.

I used this guide http://dieselgiant.com/repairyourac.htm

everything went well except when installing the AC Compressor, lots of the synthetic Esther oil leaked out. I couldn't get the bolts on fast enough. I don't know how they expect you to keep it all in there when installing it, when you have to tip it on it's side to install it. Anyways. I turned on the A/C with no refrigerant in there for a few seconds, and all sounded well, (to see if any belts rubbed, etc.) Then I put in a can of R12 "equivalent" and then ran it for a bit, and all was well. Bubbled checked out in the new Dryer, all was well. I then tried it again and then all of the sudden I get that terrible sound. Here is the video, (useless) except the AUDIO is what I want you to listen to.

http://video.google.com/videoplay?docid=2809972130281935737&hl=en

At time point ~5 seconds, I turn on the AC and you can hear the rattle (kinda, it's a Mercedes diesel, right?) at time point ~10 seconds, I turn it off. Notice the difference. When it's on, it sounds like a bunch of rocks are rattling inside it or metal on metal sound, NOT GOOD. So I dare not to use it until I figure out what's up.

So... what's up? What did I do wrong? I did put some Esther oil in the Dryer as well, as directed from DieselGiant.

http://dieselgiant.com/repairyourac.htm

I also have some oil in a can that I can add via A/C valve where you add refrigerant. Should I do that?

__________________
http://www.dieselbenz.info/

I had the same "rocks rattling in a coffee can" problem. Mine turned out to be loose belt on the compressor. Tighten the belt and that should stop the noise.

__________________
Bruce

73 220D (never left Germany)
81 300D (totaled)
84 300D (Purchased '03, sold '17)
85 300SD (purchased 10/01/03)