TM 55-1520-240-23-6
7-264
TEST HOOK RELEASE VALVE (AVIM)
(Continued)
7-264
1.
Connect pressure hose (1) to port (2) of hook
release valve (3).
2.
Connect return hose (4) to port (5) of valve (3).
3.
Connect return hose (6) to port (7) of valve (3).
4.
Connect dc power supply (8) to receptacle (9).
5.
Adjust dc power supply (8) to 28 volts. Maintain
voltage for 3 minutes.
6.
Check current drain with ammeter (10). Current
drain shall be no more than 1.4 amperes.
7.
Reduce voltage at receptacle (9) to 0 volt.
8.
Adjust dc power supply (8) to 24 volts.
9.
Apply 3000 psi pressure at 3 gpm flow to port
(2).
10.
Check pressure reading at gage (11). Pressure
reading at gage shall be 3000 psi.
7-962