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Old 09-09-2007, 01:41 AM
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A/C gauge pressure readings high/low

I did a search but can't seem to find what the pressure readings should be for a properly charged air conditioning system (w126) should be. I have a 300SD 1982 and I just charged my system but was a little short of freon due to having used one of the bottle for my Saab.

I'm getting 50 PSI on the low side and 200 on the high side. I know for a Saab it should be 70 on the low side and 250 for the high side. Can anyone tell me what it should be for a w126?
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1967 250S
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Old 09-09-2007, 01:42 AM
ForcedInduction
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R12 or R134a?

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Old 09-09-2007, 02:23 AM
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Actually freeze12 which I would think would be close to r12. And I have absolutely no idea of how to read that chart.
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...what was I thinking......
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