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Old Jan 30, 2018 | 05:18 PM
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From: colonia New jeresy
Default 73 ac question

how much r12 does my ac system hold thanks
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Old Jan 31, 2018 | 07:20 AM
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do you have a sight glass on the high side??? fill it until the small bubbles go away, usually around 3 cans(?). should say on a decal somewhere about how much if you were weighing it. You are certified to be working with R-12 , right?
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Old Feb 4, 2018 | 10:27 AM
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yes cert to charge ac no site glass or stickers i really need the psi on high and low side thanks
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Old Feb 4, 2018 | 03:13 PM
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2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Default From my 74 manual.





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Old Feb 5, 2018 | 07:56 PM
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if you are needing to charge this unit, have you looked for, leaks??? New o-rings are probably needed to start with. R-12 leaks have to be found before the unit can be charged.
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Old Feb 5, 2018 | 08:49 PM
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Vacuum is a pretty good way to test for leaks. Assuming that you’re starting from empty, it’s a good way to test the integrity of your system.
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Old Feb 10, 2018 | 10:32 AM
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or put dry nitrogen in to charge the system, then check pressure to see if it leaks off. That is what we did on residential A/C systems.
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Old Feb 28, 2018 | 12:30 PM
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ok thanks for the info
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