I found this while searching for info on our transmission.
Complete video of disassembly and assembly, plus pictures of parts. I would recommend downloading and saving in your hard drive. A lot of companies charge money for videos like these.....enjoy.
4R70W_TEARDOWN
4R70W_SUBASSEMBLY
4R70W_ASSEMBLY
I originally posted this a long time ago and original link is gone, courtesy of Magindat and the Sunshine State Marauders the above are current links to downloads of the 3 video files. I hope that these videos remain as useful today as they were 3 years ago. Javier.