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|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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I understand and have the evacuator pump. The new (used) compressor pumps when the clutch is turned. It has been tested. I have no idea what kind of oil was used in it before, thus, that is the reason that I want to clean the inside of the compressor. The old compressor was not connected to the system when I bought the car. The drier was not attached either. I know about recycling refrigerant and pulling a vacuum to remove the moisture. I just need the advice of someone who knows or is familiar with this process of cleaning the inside of the compressors. Thank you for your help.
I would flush it with oil by hand.
As long as you don't see any black crap in there you should be ok.
Also Check the clutch before you mount it.
If you do use oil, make sure it's compatible with the type of freon you will be using as they do not all play well together. Same goes for the seals in the compressor itself. There's a list somewhere that will tell you which compressors will tolerate which refrigerants without the seals breaking down.
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