TM 10-3930-659-20 17-1. MAIN HYDRAULIC PUMP FLOW TEST (Con't). 10. Close hydraulic tester (16) loading valve until pressure gage (12) reads 2000 psi (13790 kPa).  Hydraulic tester should  Indicate  a  pump  flow  of  28  gpm  (106  Ipm)  or  more.    If  pump  flow  is  less  than  specification,  check  for restrictions  in  hydraulic  reservoir-to-main  hydraulic  pump  hose  or  hydraulic  reservoir  suction  filter.    If  no restriction is found, replace main hydraulic pump (see paragraph 17-6). 11. Shut down engine (see TM 10-3930-659-10). 12. Remove pressure gage (12), hose (11), two fittings (9 and 10), and preformed packing (8) from tee (7).  Discard preformed packing. 13. Remove hydraulic tester outlet hose (15), fitting (14), and preformed packing (13) from priority valve (2).  Discard preformed packing. 14. Remove hydraulic tester inlet hose (17), fitting (18), and preformed packing (19) from tee (7).  Discard preformed packing. 15. Remove tee (7), preformed packing (6), and fitting (5) from line (4).  Discard preformed packing. TA707611 17-4