1983 320i a/c repair/conversion - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 08-19-2011, 05:48 PM
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1983 320i a/c repair/conversion

hi everyone,

My name's Gene and I have a 1983 320i that I bought new back in the day.
Being a new kid on the block I'm looking for some help. the a/c is not operational. I have begun the process of fixing/converting to r134a. The first two objects of my attention are the expansion valve and the receiver/dryer since they are called out to be changed in most r12 to r134a conversions that I have heard about. I thought I would replace the two items charge the system and see if the compressor comes on, check for leaks, if not go from there. There is some pressure still in the system so it has not been subject to much air or moisture that I can tell at this point.

My dilemma is where the exp. valve is and how to go about replacing it. So far I have the center console fully apart and I can see one of the capillary tubes attached to another larger tube.

So does anyone have experience with this model's a/c and is willing to give some advice/instruction?

Thanks in advance and looking forward to hearing from someone.

Last edited by Gene E21; 08-19-2011 at 06:11 PM. Reason: add pic of car
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#2 (permalink) Old 08-19-2011, 06:24 PM
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wheres the pic gone buddy?
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#3 (permalink) Old 08-19-2011, 07:23 PM
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pic file was too large to post, will work on getting one soon
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#4 (permalink) Old 08-19-2011, 07:58 PM
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Last edited by Gene E21; 08-19-2011 at 08:19 PM.
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#5 (permalink) Old 08-19-2011, 09:20 PM
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is this going to be a dead end?
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#6 (permalink) Old 08-21-2011, 12:36 PM
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Not necessarily.

The oil in the compressor for R12 is not compatible with the oil used in R-12 so you would have to drain the compressor oil and replace it with PAG or the oil recommended for your brand and series of compressor.

There's a handy chart at Compressor Oil Chart

I can't help with the location of the expansion valve, but I'd be surprised to find it in the console.
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