TM10-3930-660-20 18-5. PISTON PUMP -  TEST/REPLACE (Cont”d) Co d. e. f. Tag and disconnect hose (10) from adapter  (11). Leave adapter (11), assembled to pump (5). Tag and disconnect hose (12) from reducer  (13). Leave  nut  (14), reducer (13), tee {15), and reducer (16)  assembled  to  valve  (5). Tag and disconnect hose (17) from tee (15). Cap or plug all hydraulic openings. 2. REMOVE PISTON PUMP (5). a. Support pump (5) and remove two bolts (18), lockwashers (19), and flatwashers (20). Discard lockwashers  (19). b. Remove pump (5) from the vehicle. c. Remove and 3.  IF  NECESSARY, PUMP (5). a. Remove tee b. Remove two (9) . discard O-ring (21). REMOVE FITTINGS FROM (3) and reducer (4). reducers (8), and tee c. Remove adapter (11). d. Remove reducer (13), nut (14), tee (15), and reducer (16). 18-13