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  #1  
Old 07-12-2011, 04:06 PM
92 300D 2.5L OBK #59
 
Join Date: Feb 2007
Location: Central FL
Posts: 1,108
Hard Shifting 1-2, 2-3, 3-4. Solved Dry/cracked rubber connector

Hello All,
Just wanted to say thanks for all that I've learned from this site.

Symptoms. Were hard shifting all points.
From what I recalled it could be low fluid or some type of vac issue. I checked the fluid and the level was good. (Could be serviced it's about due. filter and fluid) So that lead me to vac. I know the vac is working. That leads me to follow lines. Starting at the pump all looks good. Then just aft of the fuel pump, and in front of a limiting orifice. I found a broken/dry rubber connector and its cracked.
In this diagram
http://www.peachparts.com/shopforum/attachment.php?attachmentid=43731&d=1177778132

It's where the hard line connects to part 61a just prior to 65 Vacuum control valve.

Just a thank you to all you guys.

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92 300D 2.5L OM602 OBK #59
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  #2  
Old 07-14-2011, 03:16 AM
A work in process...
 
Join Date: Oct 2009
Location: Texas
Posts: 985
Ain't it a joy when it shifts right? Congrats!
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Codifex
1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)
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Old 07-14-2011, 01:39 PM
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Join Date: Jun 2008
Location: Pennsyltucky
Posts: 449
thats awesome, I need to do some work on my OM606- do you know where I can find the diagram for that engine? It only hard shifts about 1/2 the time, the rest is smooth. I did a transmission oil change and filter about 1.5 years ago and that helped a lot- will probably do that again also but I think I have some vacuum issue.
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1995 E300 diesel
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  #4  
Old 01-22-2014, 05:37 PM
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Join Date: Jun 2008
Location: Pennsyltucky
Posts: 449
Thumbs up

finally got my issue addressed with hard/erratic shifting- was a broken vacuum line by the modulator but also the front flex joint was hammered
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Hard Shifting 1-2, 2-3, 3-4. Solved Dry/cracked rubber connector-flex-joint.jpg  
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1995 E300 diesel
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  #5  
Old 01-23-2014, 12:54 PM
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Join Date: Apr 2010
Location: Wheaton, MD
Posts: 66
Quote:
Originally Posted by freesoul View Post
thats awesome, I need to do some work on my OM606- do you know where I can find the diagram for that engine? It only hard shifts about 1/2 the time, the rest is smooth. I did a transmission oil change and filter about 1.5 years ago and that helped a lot- will probably do that again also but I think I have some vacuum issue.
im in the middle of diagnosing my shifting issues on my SD. Make sure all your vacuum lines are connected properly. i noticed my trans mod vacuum line was disconnected which was half my problem. i adjusted the trans mod after that to get the shifts harder. now its shifting pretty smoothly.

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