TM 55-1520-240-23-6
7-329
FLUSH UTILITY PUMP AND APU RETURN TUBING
(Continued)
7-329
9.
Working from ramp, tag and disconnect APU
suction hose (18) from tee fitting (19). Use
container and cloths (E120) for spilled fluid. Use
gloves (E186).
10.
Install cap (20) on fitting (19).
11.
Tag and disconnect UTIL PUMP RETURN hose
(21) from fitting (22).
12.
Install cap (23) on fitting (22).
13.
Disconnect tube (24) from RTN port (25) of hand
pump (26).
14.
Connect test stand return hose (27) to tube (24).
Do not exceed 500 psi. Otherwise
damage to components can occur.
Keep test stand bypass valve closed.
Otherwise, contaminants could
re-enter the system.
15.
Apply hydraulic power. Set stand for 10 gpm at
500 psi. Flush system for 15 minutes. Check
for leaks.
16.
Remove hydraulic power.
17.
Disconnect hose (27) from tube (24). Use
container and cloths (E120) for spilled fluid.
18.
Connect tube (24) to RTN port (25) of hand
pump (26).
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