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Another a/c question 960 97 900

posted by  Dial161 on  Mon Jun 28 09:14 CST 2004
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last visit: Wed May 30 10:01 CST 2007
[RELATED]

Thank you all for your responses to my previous post. With your help I just replaced condenser, receiver/dryer, variable orifice valve, and o-rings on my 960 1997 (133K).
Not sure if I have to replace PAG oil in the a/c compressor before vacuuming the system and charge it with R134a. Maybe it's better to leave everything 'as is' and add a couple of ounces. If it's strongly recommended, how can I add the right amount of oil? I think my a/c system should have approximately 0.25 qts/236 ml/8.0 ounces/64 drams of PAG oil. Correct me if I’m wrong.
I can drain out compressor oil and fill with the same amount, but someone mentioned that compressors usually take 50ml-70ml. Where do I have to put the rest? How? A/C hoses and Evaporator still have some oil left in it. Is there a way to make sure I have the right amount of oil in the system?





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