I am charging my system with r-12. I stopped the charge at 2.6 lbs because there were no sign of bubbles in the sight glass, should I continue to charge until I reach 3.4 lbs? And what does it do for my system to adjust the stv valve(low side) down to 30psi? Need some a/c experts. Thanks, Dutch
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Re: 1966 stv valve and r-12 freon charge
I'd fill the system to spec and see how well it cools, really the bubble method is more for systems that don't have a exact capacity spec. You can adjust the low side down as low as youd like but if you go too low you'll get evaporator freeze up. -
Re: 1966 stv valve and r-12 freon charge
How much of the no-drip insulation should be rapped around the evaporator tube? Can this be an issue if not enough? DutchComment
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Re: 1966 stv valve and r-12 freon charge
Are you talking about the sticky tape that goes around the sensing bulb from the expansion valve?Comment
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Re: 1966 stv valve and r-12 freon charge
Yes, would you have a pic of the amount of tape that you used on your expansion valve tube? Thanks,DutchComment
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Re: 1966 stv valve and r-12 freon charge
Sorry, don't have a A/C car. Just going by past experience, 3-4 wraps should suffice. Hopefully someone else will have a pic for you.Comment
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