expansion valve on 1994 Mercedes-Benz S420

I am trying to locate the expansion valve on my 1994 s420. CAN ANYONE HELP ASAP.

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1 answer
I suggest you get a good repair manual before working on this car, I suggest these guys: http://bit.ly/Bentley_Repair_Manuals
This system might not even have an expansion valve, so check the manual to know for sure.