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  #1  
Old 04-19-2003, 08:07 PM
agood's Avatar
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Location: Roswell, GA
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Clear Tranny Adjustment info...needed

I have done several searches and found several sites about the adjustment of the ATs. Mine holds 1st a little long and then shifts from 2 to 3 almost immediatly. The shift from 3rd to 4th is flaring. So I have several different symptoms....Not sure where to start adjusting....Could someone tell me where to start?
Thanks...
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1995 E300 Diesel
1994 E320
1999 C230K
1994 S500 W140
1990 300 SEL
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  #2  
Old 04-19-2003, 08:22 PM
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There is no info, even in your profile, to indicate the year and specific model you are working on.

Gilly
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  #3  
Old 04-19-2003, 08:55 PM
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my signature clearly says....83 300sd....Is there something else you need?
Thanks
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1995 E300 Diesel
1994 E320
1999 C230K
1994 S500 W140
1990 300 SEL
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  #4  
Old 04-19-2003, 09:36 PM
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Sorry, I had my user profile set up so it wasn't showing the signatures. This is because I was having a hard time with the speed of my lousy dial-up connection, and the less info my computer had to process, the faster it was (although still very slow). It's been acting better lately, so I turned "show signature"
back on for now.

I'd start with checking the port on the brake booster line where the smaller vacuum line connects for the modulator. These tend to plug up over time and can reduce the "amount" of vacuum available to the vacuum modulator on the transmission, which on this model can affect the shift quality (soft/firm) and I also believe on an 83 it can affect the shift point as well.
If you don't seem to have any flow out of this small side port on the brake booster line, as a test you can try clearing out the port with a small wire, such as a torch tip cleaner wire. But the size of this orifice is considered an important dimension, so i would normally recommend replacing the booster line itself if this seems to be helping the shifting, they cost in the $25-40 range and are EASY to replace.
You can also check the modulator itself with a MityVac to make sure it's holding vacuum.

Gilly
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  #5  
Old 04-20-2003, 09:28 AM
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Join Date: Feb 2002
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One of our members, Thomaspin, has a site documenting some of this for his SD. You'll want to take a look. http://www.pindelski.com/cars/W126/OM617_transmission/imagepages/at.html
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  #6  
Old 04-20-2003, 11:01 AM
agood's Avatar
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I have read this site....thanks for the reply. Since I have several different shifts....early, late and flaring....then I couldn't figure out what to do here.....I adjusted the cable to make the shift later but it only held 1st gear longer....did not help with the almost immediate shift from 2 to 3rd....
Any more ideas?
Thanks
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1995 E300 Diesel
1994 E320
1999 C230K
1994 S500 W140
1990 300 SEL
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  #7  
Old 04-22-2003, 10:24 PM
agood's Avatar
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Join Date: Apr 2003
Location: Roswell, GA
Posts: 198
Here's what I was looking for...just happened across it.

http://transmission.articles.mbz.org/adjust/

Thanks
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1995 E300 Diesel
1994 E320
1999 C230K
1994 S500 W140
1990 300 SEL
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