Torque Converter/Power Shuttle Oil filter is located behind the grille, in front of the radiator. Case part number: A39578. It is a cartridge type, not a spin-on. Is available at our local dealer (Agricultural dealer). I have had luck converting some Case filter numbers to a different brand available at most any NAPA or good auto parts store.
The dip stick is on top of the shuttle housing, in front of the shift lever. It is a hex head "plug" type with the dipstick welded to it.
Good Luck & welcome to the Case world... Mr Beer.