Bulletin HY25-1890-M1/US Owner’s Manual10-Bolt Extended Shaft PTOsParker Hannifin CorporationChelsea Products DivisionOlive Branch, MS 38654 USA13Installation InstructionsInstallation Mounting Kit InstructionsDowel Pin Location if installing890/897 Series PTO on RightSide (Curb Side) of Transmission.892/899 Series Mounts Left Side(Street) OnlyDowel Pin Locations ifinstalling 890/897 SeriesPTO on Left Side (StreetSide) of Transmission.Pressure Port and Aperture Opening IdentificationThese drawings represent left and right views of the MD and HD pressure ports on the transmission.Allison10-Bolt Pad 97-Teeth Main Pressure Port.438"-20UNF-2ALeft Side Only13.61"[345.7]68-Teeth83-TeethMain Pressure Port.438"-20UNF-2A175 to 255 PSIBoth SidesMain Pressure Port.438"-20UNF-2A175 to 255 PSIBoth Sides10.15"[257.8]Allison10-Bolt PadMain Pressure Port.438"-20UNF-2A175 to 255 PSIBoth Sides10.15"[257.8]Allison10-Bolt PadMain Pressure Port.438-20UNF-2A175 to 255 PSIBoth SidesTop/LeftTop/LeftRight/LeftMDHDMDStud 890/892/897/899 Series 3Arrangement Only24.33"[618.0]24.33"[618.0]