And here now 51 pages, 18 MB DIY instructions for changing the ATF, cleaning the valve body and changing the small balls in the 5HP30, up to page 29 German language, but plenty of pics which explain it all, from page 29 English. As the server is slow there, better download the cpl. instructions onto your own PC
http://www.m-mtuning.de/daten/Anleit...Kuegelchen.pdf
In case you need a translation, use one of the online translation programs.