Hope I'm not going to get into hot water for this post but I found this little pearl on the internet and purchased it. Along with the posts here, it definitely is filling in a lot of blanks for me and it's organized pretty well for 16 bucks.

http://mb107.com/manuals/mb72234-transmission.htm

I'm assuming that the publisher had rights to put this together and throughout the content it prohibits redistribution. Here's the link and a screen shot of the index page. (Obviously, links in the jpeg are not live)

Apologies in advance if I'm out of bounds

Attached Thumbnails

 

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1985 300D 172,110mi and goin' strong

If either of the below still work they are Free.

Russian Transmission site
http://w126.pp.ru/akp722.pdf

Where I found the link
info on 722.3 - 722.5 transmissions - PeachParts Mercedes ShopForum

An other link this is the 150+ page one
http://www.w124performance.com/docs/mb/other/tranny_722_repair.pdf

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84 300D, 82 Volvo 244Gl Diesel