TM 10-3930-669-10 1-14.  HYDRAULIC SYSTEM. The  hydraulic  system  is  pressurized  by  a  dual  cartridge  pump  (1)  which  is  driven  by  the  transmission  (2).    The  dual cartridge pump is suction fed from the hydraulic tank (3).  The primary cartridge supplies 11 gallons-per-minute (GPM) to the load-sensing power steering unit (4) and the lift/shift control valve (5).  A priority valve (6) directs the flow to either the steering unit or the lift/shift control valve.  The secondary cartridge supplies 4 GPM to the pivot/tilt control valve (7). 1-9