I came across this manual while searching the web. Thought others would find it useful too.
BW 1350 and 1354
drive.google.com
The link was found on this page
www.car-repairmanual.com
BW 1350 and 1354
warner-gear-1350-1354-atsg-automatic-transmission-service-group.pdf

The link was found on this page
Transmission Repair Manuals and DIAGNOSTIC
GENERA L DESCRIP TION DIAGNOSIS TEARDOWN PUMP VALVEBODY ASSEMBLY SPECIFICATIONS 350SUPPLEMENT INFORMATION TECH BULLETINS THM 350 350C – ATSG (Automatic Transmission Service Group) Download