772G - GRADER, MOTOR 0261 Diff. pump Parts group 0261 Diff. pump 0261 Diff. pump . Differential Lock Pump, Hydraulic Fittings and Mounting HFWD Pump and Mounting HFWD Pump Cylinder Block, Swash Plate, and Pistons HFWD Pump Housing and EP Control HFWD Pump End Cover and HFWD Motor Flushing Pump