Wayne,
Welcome to the group.
ATSG manual for 722.3 is here:
http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=2&Category_Code=722-3manuals
I've got some factory 722 transmission service manual microfiche, but no way to copy it for you,(and no useful rebuilding experience
); so that may be of little help.
If someone has a microfiche printer and could knock out a copy for me and for anyone else they wanted to, email or PM me. It's ~ 180+ pages.