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#1
08-30-2004, 09:51 PM
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77 ac problem help please
I have a 1977 300D that has ac issues. I recently had a new compressor put in (which a chrysler is the only thing that fit it) someone that owned it prior to me really messed up the wireing and put some type of by-pass stuff of it. Plus they cut some of the vaccum lines and really messsed this up too. One mechanic that deals with the older models said to wire ac straight to the battery.... well it drains my battery and the alternator, now what???? Anyone have any suggestions or a wireing diagram and vaccum scamatic for my ole' girl? Thanks Susan
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#2
08-30-2004, 10:25 PM
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W123 or W115 chassis? First three digits of the VIN number.
Peter
__________________
1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs!
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#3
09-03-2004, 02:55 PM
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123 chassey
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#4
09-03-2004, 06:51 PM
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That model has a pricey servo that controls the heating/AC system. My guess is someone was too cheap to replace it and bypassed it, causing the problems. I think a rebuilt servo with a metal base, instead of the original plastic (which cracks) will run around $600. Performance Products recently came out with a digital replacement for the servo which also is about that price. The other option is finding a functional one in a scrap yard or buying used from someone on this site. The servo is a large plastic topped item with a lot of vacuum lines and wires coming to it mounted on the fender behind and to the right of the AC compressor. Heater hoses go in and out of the bottom of it.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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#5
09-09-2004, 09:26 AM
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thank you so much for your help, will try that.
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#6
09-09-2004, 04:59 PM
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Climate COntrol unit
Hello,
Not sure if you purchased that climate control servo yet, but I can get the aluminum bodied varient for 375. Let me know if I can help, 404 805 1357. Best, Jonathan
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Blue Ridge Mercedes Jonathan Hodgman http://www.blueridgemb.com/ Enthusiast Service, Restoration & Tuning. Follow Us on Facebook! Located in the Atlanta area Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines. Mercedes Repair Atlanta
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