Automotive Air Conditioning Information Forum

Inert gas (argon) pressure leak-down test passed. Didn't loose any press over-night. Vacuum test passed. Got down to 470um then ran pump for another hour. Isolated pump and vacuum climbed to 795um and stabilized after 1 hr. Called it good and charged system.

Used 2 can exactly. Using scales with 0 ...

Yes I'm aware you can't accurately read deep vacuum using a gauge set. That's why I have a micron gauge.

My understanding is that if you can pump down below 500 microns, isolate system and if it stabilizes and doesn't go above 1000 microns in a hour, there's no significant leaks. Just out gassing ...

Last night I played with it some more. Connected my brand new 3-port Fieldpiece manifold and all 3 brand new Yellow Jacket Plus II hoses to vacuum. Got down to 370 microns after a few mins. Shut-off pump isolation valve and shut-off pump. Today I'm at ~750 microns, so think I'm OK in regards to ...

After messing with the hose connections, I'm now able to achieve 130 microns in 3 mins and down to 91 microns after abt 20 mins. Holding it is another matter. If I close pump isolation valve, vacuum goes over 500 microns in a few mins with just the micron gauge connected via 3 ft hose. Still not ...

While awaiting parts to arrive, I dug out my old Robinair 15400 pump and micron gauge. Both have been in a box for the last 18 years or so. Warmed-up pump and replaced the oil (with Robinair oil). Connected micron gauge and it pulled down to abt 180 microns within a couple of mins. This pump is ...

Is it common for 12oz cans to be short on refrigerant? I've never heard of that.

On the other hand, I also feel that one can only deliver about 11 oz. from such cans into the system, from venting the hoses to some remaining inside the can.


I can see that happening with hose purging. It ...

Is it common for 12oz cans to be short on refrigerant? I've never heard of that. I have a scale I use for partial cans.

In regards to the oil, I was planning on putting half in the compressor and the other half in the receiver/dryer. Don't have an oil injector gizmo.

For the condenser, think I'll ...

Thx for the link Tim. BTW, are there any "kits" on ACkits.com? I didn't see any.

John, don't recall a lot of details abt the work done in 2008 other than it was a pain to do in the driveway. I think I used 2 cans. Don't remember abt the oil but it was whatever GM calls for. C5's are a pain to R&R a ...

2000 coupe with stock LS1. I had replaced the compressor, condenser, dryer, orfice tube with all GM parts in 2008 shortly after buying the car. Also flushed evap and hoses with special solvent made for that purpose. Lasted until last week. Put abt 100K miles on it during that period.

It didn't ...

Had my compressor lock-up and looking around for replacement parts. Unfortunately all the dealership parts are no longer available. Currently looking for a condenser. Looking for something as good or better than OEM. I live in Texas so the higher the efficiency, the better.

Found some vids online ...