OMFB Allison 05612 Power Take-Off Product Bulletin
OMFB is pleased to advise of an update to Allison 05612* model power take-offs. Previously, the location of one of the output-flange cap-screws (as indicated below) caused fouling with the transmission in some instances. The output-flange of the PTO has been rotated to relocate cap-screws either side of the obstructed area. It is now possible to fit this version of housing to all Allison 3000 & 4000 Series side and top PTO openings.
You can download the full product bulletin here for more information .