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**leddzepp** · 04-08-2008, 12:54 AM

You really need to put a vacuum on it for about 20-30 mins to properly evacuate the system. That is probably your problem right there. A/C sounds real simple, but in actuality it is not. Are you using R134 or R12? If converting to R134, the system needs to be flushed (not just evacuated) Any moisture in the system and it will NOT work, hence the vacuum. Most A/C parts do not fail, except the compressor. Did you put PAG 150 oil in the compressor yet? The other part that fails sometimes is the original POA valve. If you still have the original POA valve, it is important to NOT introduce oil when re-charging. In other words, do not buy freon that has oil added to it. I have completely restored the A/C in my 72 and it blows ICE cold air. Any other questions, feel free to PM me.

04-08-2008, 12:54 AM	#3
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,117	Re: What do you replace mostly when fixing A/C You really need to put a vacuum on it for about 20-30 mins to properly evacuate the system. That is probably your problem right there. A/C sounds real simple, but in actuality it is not. Are you using R134 or R12? If converting to R134, the system needs to be flushed (not just evacuated) Any moisture in the system and it will NOT work, hence the vacuum. Most A/C parts do not fail, except the compressor. Did you put PAG 150 oil in the compressor yet? The other part that fails sometimes is the original POA valve. If you still have the original POA valve, it is important to NOT introduce oil when re-charging. In other words, do not buy freon that has oil added to it. I have completely restored the A/C in my 72 and it blows ICE cold air. Any other questions, feel free to PM me.