Quote:
Originally Posted by JimmyL
I've spent the weekend redoing the AC system on Smash. I will add details to my cheap wagon thread, but had a question.
After replacing all the parts and the o'rings and adding the ester oil, I attached the evacuation pump to my AC gauge lines.
So, can this suck out some of the oil that is installed in the system? I had pretty much the exact amount I needed and hope none is removed via the vacuuming......
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Speaking in generalitys, depends on the car and A/C service equipment. Does your vac pump have an oil collection resivior? If so you can see how much it draws ou and inject that much back, if not, it likly is vented to atmoshere, you will likly see any suctioned oil discharged out the pump exhaust. If you can, recover that oil to see how much to add back. Its prolly not goin to do any harm to add a touch extra oil. Is this a retrofit to R-134a or R-12 refill? R-134a needs PAG oil as refill and at our shop doing a retrofit, we repalace the o-rings, reciver/dryer, flush the condenser with a/c flush and purge with air to remove flush. Also replace clean any screens, possibly replace the expansion valve, and remove as much oil from the a/c compressor as possible and refill with PAG. Hope that helps!
