The parts guy at the dealer told me that the w126 CD also has no transmission info, as there was never a shop manual for for it. As Sixto said, finding stuff in the CD can be a real challenge, but there is a remarkable amount of info there. If you follow his suggestion I think you will find what you are looking for.

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Jason Priest
1999 E430
1995 E420 - retired
1986 420SEL - retired