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Author Topic: RV2 a/c compressor  (Read 267 times)
67cruzer
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« on: April 08, 2019, 02:57:38 PM »

Hi all,
I just reinstalled the original a/c system in my 67 charger after 20 + years. I have flushed the system and made the recommended changes to convert to r134. I rebuilt the compressor and removed the EPR valve. The shop manual calls for 11 ounces of compressor oil. The conversion kit contains 8-1/2 ounces of oil mixed with 3 ounces of r134. Can I add the balance of oil (PAG) to the compressor before charging the system?
Thanks
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Pete in NH
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« Reply #1 on: April 09, 2019, 06:52:27 AM »

Yes, you can add the additional oil into the compressor sump. Since you removed the EPR valve you will need to add a thermostatic switch with a sensing probe in the evaporator case. This switch should be wired in series with the compressor clutch to cycle the compressor to prevent it freezing up.

Start with about 70% of the recommended R-12 amount for the R-134A charge and slowly add additional R-134A for maximum cooling.
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67cruzer
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« Reply #2 on: April 09, 2019, 08:46:31 AM »

Thank you! I have the thermostat. I just need to pull a vacuum and pray for no leaks.
Thanks again.
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67cruzer
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« Reply #3 on: April 09, 2019, 05:05:18 PM »

 No leaks. Great to have a place to get advice when you are trying to DIY.
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