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Andy4639 · 08-17-2014, 04:41 PM

Is this R-12 are 134A Freon? If it's 134A it will take less than R-12. Don't go by the sticker for R-12.

To much charge is just as bad as not enough.

I would also put a mechanical shut off in line with the vacuum shut off. If any heated water is coming through to the heater core will make the AC seem hotter.

My 134a runs about 45-50* depending on outside temps. No matter what the motor is running. Make sure the belt on the compressor is tight, very tight!

08-17-2014, 04:41 PM	#3
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Air condition performance Is this R-12 are 134A Freon? If it's 134A it will take less than R-12. Don't go by the sticker for R-12. To much charge is just as bad as not enough. I would also put a mechanical shut off in line with the vacuum shut off. If any heated water is coming through to the heater core will make the AC seem hotter. My 134a runs about 45-50* depending on outside temps. No matter what the motor is running. Make sure the belt on the compressor is tight, very tight! __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.