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#1
06-06-2008, 05:34 AM
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A/C on '85 300TD
The A/C compressor on my '85 300TD is toast.
What years can I use a compressor from? For example, the part # of a compressor from an '85 is different than from an '83. Are these years interchangeable? Thanks
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JWJ 1983 MB 300D - > 430,000 miles - Deep Blue - Bilstein Comforts - 0-60 in 24 seconds - 27MPG 1985 MB 300TD (wagon) - > 275,000 miles - Manila Beige - Thule rack - 0-60 in 18 seconds - 22 - 25MPG Biodiesel, Mobil Delvac 1, and Viton fuel lines! 
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#2
06-06-2008, 08:09 AM
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They are interchangeable from any 1980 & later MB that used that R4 Delco compressor.
There are also many remans out there for $125 & less.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
06-06-2008, 08:40 AM
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Check out this thread: http://www.autoacforum.com/messageview.cfm?catid=2&threadid=17484
When you get your compressor, you might want to check into the location of the oil passage. I have read that the part with the 'X' can just be unbolted and rotated to the correct orientation. Don't know how true that is though. Something to look into. FWIW, I installed a reman compressor in the 'wrong' orientation a couple of years ago and haven't had any problems with it yet.
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#4
06-06-2008, 09:35 AM
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The R-4 is a sumpless design. Clocking only affects the position of the electrical connection of the clutch coil.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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#5
06-06-2008, 01:28 PM
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while you are looking, check the price for a compressor on an 86 chevy astro... should be the same unit.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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