Quote:
Originally Posted by tangofox007
The B2 brake band might be related to the 1-2 shift, but it doesn't do anything (except remain engaged) during that shift.
When upshifting, B2 disengagement does not occur until the 3-4 shift.
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Here's what the Mercedes transmission pdf I have says about shifting elements:
I was mistaken when I said K1 spring kit helped my 1-2 shift. It did but not nearly as much as a new B2 piston. Prior to the new B2 piston, the 1-2 shift had always been like a punch in the neck. Now its not even noticeable. So perhaps the B2 is a possible problem for the OP.
Some other info that might be helpful to OP:
To answer your question on when it should shift:
The pdf this came from is for the G-wagon, but it looks like all the transmissions should shift from 1-2 by 10kph.
From what I recall, the same is true for my 300SDs... From what I can recall, at partial throttle the shifting is RPM independent. This is from the 300GD (722.399)
