I looked on the 'bay for zf 4hp22 and got nothing
procured in digital form from the typical place that you might be able to get digital copies of "books" or "documents" from for "free". if you can't infer what i mean, that you probably weren't going to make use of this method to begin with. many of these manuals are for older transmissions (4l80 and such), but it is still a nice thing to have on hand. the set of manuals i got had a GM 4l30e in it, so i have both a paper copy of the atsg book as well as a digitized pdf. don't expect to find a manual for a zf 9 speed &c. &c for an e169 bmw, but if i were sitting and waiting for a paper copy of a manual to arrive in the mail, i'd "get" the collection and see if i get lucky while i wait.
there should be one of them in the set i got, but nothing. there's a 4hp18, but that is it. i see one on us ebay for 13.99 plus shipping.