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#1
09-06-2006, 09:17 PM
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79 300cd no reverse
hi all. i'm new to the forum. i've recently bought a 1979 300cd with 150k. everything seems to work fine except reverse. i've heard people speak of vacuum issues, i may be blind, but i can't find a vacuum line to this trans anywhere. anyone ever experienced anything like this before? i fixed a few broken vacuum lines under the hood, and repaired a electrical plug that goes into the trans, but no change. i did get the a/c to start working though. any thoughts would be greatly appreciated..
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#2
09-07-2006, 03:27 AM
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The '79 300CD is a mechanically controled automatic. There is only the throttle pressure rod that is hooked to the throttle linkage. Obvious is to ck fluid level AND smell.
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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.
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#3
09-07-2006, 08:16 AM
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That car has transmission with EXTERNAL reverse band adjustment.
ON the right (passenger) side of the trans JUST above the kick-down solenoid is the adjustment bolt. The jam nut can come loose & then they simply back out over time. Replacement of the bolt may be required for correct re-adjustment...the original bolt is a "shear-off" design.
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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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#4
09-07-2006, 03:28 PM
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i will check into that bolt you mentioned. the car was hit frim behind and is still damaged. it is possible the original owner was involved in an accident while not having reverse. or the reverse problem was caused by the accident..any thoughts anyone..
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#5
09-07-2006, 06:39 PM
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reverse
mb doc as usual is spot on with his advice.either the band tabs inside the trans broke or the locknut came loose and the adjustment bolt backed out.you better hope it's the latter.
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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#6
09-07-2006, 08:43 PM
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This will help you.
http://www.peachparts.com/shopforum/showthread.php?t=151936&highlight=REVERSE+BAND
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