TM 55-1520-240-23-6
7-116
TEST FLIGHT CONTROL RESERVOIR/COOLER (AVIM)
(Continued)
7-116
11.
Close and open valve (7) to lower and raise
pressure at return port (2) from 120 to 0 psi
twice.
12.
Check reservoir (9) for leaks and smooth
operation of cylinder (11). There shall be no
leaks, erratic movement or sticking of cylinder.
13.
Close shutoff valve (8).
14.
Open valve (7) to raise pressure at return port (2)
to 120 psi. Maintain pressure for 2 minutes.
15.
Check reservoir (9) for leaks. There shall be no
external leaks.
16.
Open shutoff valve (8).
17.
Close valve (7) to reduce pressure at return port
(2) to 0 psi.
INTEGRITY PRESSURE TEST, HIGH PRESSURE
SIDE
18.
Connect hand pump pressure hose (12) to
reservoir pressure port (13).
19.
Open valve (7) and apply 60 psi pressure to
return port (2).
20.
Close valves (7 and 8).
21.
Make sure valve (14) is closed and apply 3350
psi pressure to pressure port (13). Maintain
pressure for 2 minutes.
22.
Check reservoir (9) for leaks. There shall be no
external leaks.
23.
Open shutoff valve (8).
24.
Close and open valve (7) to lower and raise
pressure at return port (2) between 120 psi and
0 psi.
25.
Check reservoir (9) for leaks and smooth
operation of cylinder (11). There shall be no
external leaks, erratic movement or sticking of
cylinder.
26.
Open valve (14) to reduce pressure at pressure
port (13) to 0 psi.
27.
Close valve (7) to reduce pressure at return port
(2) to 0 psi.
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