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A/C back together - how to recharge and monitor? 200 1985

posted by  leblanc3 on  Tue Jul 6 15:53 CST 2004
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You can charge the system with the engine running. The clutch, if wired properly, will not engage until there is sufficient charge to safely run the compressor. Fill with gas from the low side. If you are using R-12 gauges, the temperature will not correspond to the right pressures with R-134a refrigerant. The systems I've converted ('81 and '87) and other cars I've dealt with run about 35-40 psig on the suction and around 225-230 psig on the high side, with ambient temperature around 90 deg-F. You should be able to monitor high side at the drier.

Good Luck,
Randy
'87 244, '91 245, 3 others now deceased






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