There's some JPGs of a Bosch book with some interesting info in this thread:
http://www.***************/forum/showthread.php?t=196
(post #5)

And, in this thread there is a link to a photo of an OM617.95x pump with the rear cover removed - the only picture I've seen:
http://www.***************/forum/showthread.php?t=30
(post #16)