You only have half of the tool set. The other (missing) half will be able to accommodate the larger Schrader valves pictured. A tool supplier for professional MVAC technicians should have them or can order them for you. The knurled double-sided tool is for removing and installing the Schrader valves...

On a side note, no oil would drain from the old compressor, as in not a single drop even turning the pulley. However, I drained about 8 oz out of the old receiver/dryer. Total system spec including compressor is 11oz. Eight ounces of oil came out of the old R/D and none from the compressor? Oh, my ...

I don't know of any tools for the purpose of which you speak. But an alternative is to obtain whatever size aluminum tubing you need, purchase an already formed o-ring fitting in the same size and material, swage each end of the tubing and fitting (so that one fits inside the other), and aluminum-br...

And here is what MACS says: —609 Certification is part of the U.S. Clean Air Act of 1990. Since 1992, federal law has required technicians working for pay to be certified to recover and recycle refrigerant. In addition, only certified technicians are allowed to purchase R-12. As of January 1, 2018, ...

Directly from the EPA: Requirements to Purchase Refrigerant The following people can buy refrigerant found acceptable for use in a motor vehicle air conditioner (MVAC): —Technicians who have earned Section 609 Technician Certification. —Employers of a Section 609 certified technician (or the employe...

Adding to the above questions, Did the vacuum hold steady for at least 10 minutes after you evacuated the system?

True and interesting to note that minus 1 BAR on the dial equates to 30 in Hg on the psi scale I noticed that as well, although (and I could be off base here) I don't think the BAR scale is specifically intended for measuring vacuum from 0 BAR to –1 BAR. I believe only the small white-on-green (inH...

A/C cooling not working..never been serviced , original system. Any ideas ????...also checked for closed blend door...door fine working for cooling air.... Okay...we can rule out the blend door. The system has never been serviced and is original, leading me to think that it is either low on refrige...

From a distance, and looking at the posted pressures, I'm guessing that the TXV is stuck open. You've already eliminated the variable-displacement compressor and control valve as the source of the problem. But questions remain. Did you leak-check the system? Under what conditions did you record thos...

One point of clarification on the pictured gauge is that BAR refers only to the black-on-white outermost ring of calibrations on the gauge face, not to the white-on-green vacuum scale, which reads only in inches of mercury, or inHg.