Pagoda SL Group
W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: paul_GB on July 03, 2010, 08:41:59
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After a recent engine rebuild the auto box on my 230 was working sweetly (positive shifting at the right revs/load). During the latter stages of a recent long run it started to develop problems as follows :
1. 3rd to 4th change occurs at the correct revs but the transition is very slow (not a positive action)
2. Pulling away in forward the gears only actually engage properly when I 'pip' the engine revs (and its clunky)
3. Lower gear changes are now more clunky in general
4. When pulling away in reverse the motion is now 'snatchy'
Good points :
1. Kickdown works fine
2. It stays in top gear once its there
3. Changes happen at the correct revs
Ive checked and re-checked the oil level. Bolts all seem tight. Linkages all move ok.
Any thoughts..? Thanks..
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Paul
see if this link helps
http://www.mercedesdismantlers.com/16BoltInstallationInstructions.html
They will answer questions via e mail if you need.
Regards
Matt
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Thanks for the info Matt... very useful..
Cheers
Paul
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.. after reading threads on this subject I am now suspicious that engine timing may be part (or all) of the problem. Ive seen Joe's comments suggesting timing can cause 'shifting' problems. I recently adjusted the cam sprocket timing (moved a link on the timing chain and installed a 4deg offset key). Hmm... could this be it or am I clutching at straws....? Thinking about it the transmission problems started about the same time. I need to undo the timing change and see if I get my slick gearbox back...
Paul
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Hello Paul,
Since the automatic transmission is influenced from engine vacuum any change can cause shifting problems. Changes in ignition timing will cause a change in engine vacuum.