Got the system charged on Tuesday. The process: 1 - evac for 20 minutes and charge with R134a to 15 psig (look for leak down) 2 - recover and evac for 20 minutes and charge with R134a to 15 psig (look for leak down) 3 - recover and evac for 1.5 hours and charge with 36 oz. of R134a (at idle low pres...

At this point I'm going to try making and letting dry air back in.
I bought a desiccant filter and I'm thinking if I very slowly bleed air back in I'll have low moisture air back in the system waiting for the shop appointment in Aug.

Looks like Wally Mart is providing the best listing for a small can of pure R134a. I'll go there tomorrow and see if I can get a can.

https://www.walmart.com/ip/R-134a-Refri ... y/16888798

It does not appear to be super easy to buy a small can of pure R134a at a local auto parts store in CA. It seems there is a deposit and return process involving a valve that I guess is permanently attached to the can. I have to return the empty can? Anyone know how this goes here in CA? Please advis...

forgot to add:
- disconnect QD fittings
- install plastic caps

I think the process would be: - starting with pump running and manifold wheels open - close manifold wheels - turn off pump - attach can and secure service hose at both ends - puncture can - bleed service hose at manifold to the outside - close service hose at manifold - slowly open manifold wheels,...

ok - I'll work on that. I'll turn the pump back on and open the manifold wheels. Has been off for a couple of hours and the needle doesn't seem to have moved still showing 31" hg. Is there good and bad quality R134a in the small cans? No worry of mixing with the shop's R134a? I guess I want no ...

I don't have a way to charge it.
Need to take to the shop and they can't get to it until the first week in Aug.

Got a set of gauges from HF. Borrowed vacuum pump from Autozone. It is now pumping - showing 31 " Hg. I guess leave it run for 2 hours and then shut it off and see how things hold overnight or during the rest of the day. I shut the pump off just after starting it for a minute or so and the vacu...

Good point there is moisture from the air it there at this point.
I'll check with my local Autozone and see if they have loaner pumps.