TM 55-1520-240-23-6
7-116
TEST FLIGHT CONTROL RESERVOIR/COOLER (AVIM)
(Continued)
7-116
INTERNAL LEAKAGE
62.
Close shutoff valve (8).
63.
Open shutoff valve (7) and apply 5 to 20 psi to
fill reservoir (9). Hold bleed relief valve (6) open
until reservoir is free of air.
64.
Close shutoff valves (7 and 10).
65.
Close valve (14).
66.
Check pressure gage (22) while applying 3000
psi pressure to pressure port (13). Maintain
pressure for 3 minutes. There shall be no
pressure increase during 3 minutes.
67.
Open shutoff valve (8) to reduce pressure at
return port (2) to 0 psi.
68.
Open valve (14) to reduce pressure at pressure
port (13) to 0 psi.
69.
Disconnect hose (1) from return port (2).
70.
Disconnect hose (12) from pressure port (13).
71.
Disconnect hose (3) from supply port (4).
72.
Disconnect hose (5) from bleed relief valve (6).
73.
Use cloths (E120) for spilled hydraulic fluid.
74.
Remove bleed relief valve (6), relief valve (23),
thermal switch (24), and temperature bulb (25)
from reservoir (9).
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
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