PeachParts Mercedes-Benz Forum - Pinpointing an AC Leak

Quote:

Originally Posted by JKAMOCSAI (Post 2998427)

Only thing I have to figure out is what the schrader valve on the compressor manifold is for, and do I need to do anything with it. I replaced the stem while I had the compressor off, but does the system get vacuum'd there, or filled?

Did you replace all the system o-rings?

Did you flush the system?

Did you prefill the correct oil into the compressor?

If not, you will be doing all of this again. Just because it holds vacuum does not mean it will hold pressure.

That Schrader valve is just another high side service port.