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How Much R12 Does Are A/C System Hold?

I had a bad A/C condenser and have a new one on order and wanted to find out how much R12 are system holds? I have a 30lb cylinder.
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Old 08-28-2007, 01:43 PM
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1350gm or 47.6 oz
Old 08-28-2007, 03:29 PM
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Thanks... I received the new rear condenser and installed it without any problems. I vacuumed the system for 30 minutes and zeroed out the scale. I could only get the system to take 1 Ib 7 oz my high side was well over 300. Inside temperature was only 59 degrees.

Tomorrow I'm going to use the gauges and set it up by pressure. Anyone know what the hi side should read? Say 85 degrees
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Last edited by BMAN; 08-30-2007 at 04:42 PM..
Old 08-29-2007, 01:11 PM
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Any help?
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Old 08-30-2007, 04:44 PM
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It's better to leave it hooked up and running to the vacuum pump for 3 hours if you can.
Your expansion valve may be stuck or semi clogged. High pressure is too high. Around 230 is better.
Low side should be around 40.

just guessing from my r12 days with other cars though...
Old 08-30-2007, 06:22 PM
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