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Old 06-13-2002, 08:38 PM
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Question Converting to current A/C refrigerant

I'm tired of adding $100+ of freon every year to my 1980 240D. To convert to the new stuff I have been given quotes of $1200-$1600 by A/C shops. Looks like I can get all the parts necessary for about $400 from Performance (including new compressor).

Where can I get detailed instructions as to what to do? It would also be nice to have a diagram. (I'll be damned if I can find the expansion valve.)

Has anyone done this conversion that can supply some input as to ease, pitfalls, etc.?

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Old 06-13-2002, 09:55 PM
Amuso's Avatar
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Join Date: Apr 2002
Location: Norway
Posts: 102
Btw, what does the excact conversion kit consist of?
99 W210 E220 cdi sedan automatic (248.000 km) 210.006
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Old 06-13-2002, 10:26 PM
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Fixing the leak means replacing the compressor which comprises 75% of the cost of the parts needed for conversion.

Conversion parts include:

Compressor ($288.00)
Receiver dryer
Expansion valve
Pressure switch
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Old 06-13-2002, 10:59 PM
Senior Member
Join Date: Apr 2001
Location: Baton Rouge
Posts: 485
If it is the old style york compressor ( up top on left) dont bother it wont cool. Now if you have an r4 ( bottom right) you will be ok. Make sure to add pag oil only to the compressor and change reciever drier. Use a 15-20% less charge of 134a than it takes r12. When doing a conversion we usually change e-valve and condensor if the car has experienced a black death ( compressor lock up) . Good luck
euro 287
Mercedes Technician 7 Years (retired to Hyundai)
2000 Dodge Durango
98 Mazda truck
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Old 06-13-2002, 11:02 PM
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Join Date: Jul 2001
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