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#1
10-18-2007, 07:47 PM
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300SD A/C Expansion Valve Location
I own one of the "bastard" 300SDs, the 1978-1980 model. I can't seem to be able to find the location of the A/C expansion valve. All of the information that I have located on the internet talks about the 1981-1985 models. I need to replace the R-4 compressor and feel that a complete system flush and replacement of the expansion valve is also required.
Bob Moore Tarpon Springs, FL 1980 300SD 125,000 miles 
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#2
10-18-2007, 10:20 PM
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Sorry I can't be of help but I'd like to know as well since I'll be doing this job sometime soon.
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Seth 1984 300D 225K 1985 300D Donor body 1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!! 1980 300SD 311K My New Baby. 1979 BMW 633csi 62K+++? Dead odo
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#3
10-18-2007, 10:27 PM
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Have you looked up under the driver's side kick panel, above the fuel pedal, behind the piece of carpet, jammed up on the firewall, covered in black insulation type gunk with a copper wire running into the evaporartor?
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If it ain't broke take it apart and find out why.  1983 300SD, 4 speed 1994 C280 1987 300TD wagon 1996 HD Road King Ride in Peace Eric Peterson, Harley of Macon
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#4
10-19-2007, 01:01 PM
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They're connected, so it can't be too far away from the evaporator:
http://img.eautopartscatalog.com/live/R104515381AIR.JPG http://img.eautopartscatalog.com/live/R113044441PRI.JPG
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http://i284.photobucket.com/albums/l...aman/Fleet.jpg Peach Parts W124.128 User Group. 80 280SL 85 300SD 87 300TD 92 300D 2.5 Turbo 92 300TE 4Matic
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#5
10-19-2007, 04:43 PM
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that's where it is
Quote:
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Rev. Dr. G. Church of the SubGenius It doesn't take a genius
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Thanks
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