TM 55-1520-240-23-1
1-38
APPLY EXTERNAL HYDRAULIC POWER (Continued)
1-38
CONNECT POWER
CAUTION
Ensure maintenance personnel are
qualified/experienced in operating and
connecting external power.
1.
Remove caps from proper test connections (1,
2, or 3) on helicopter. Connect pressure and
suction hoses to test connections.
2.
If applying power to flight control test connections
(1 or 2), adjust test stand as follows: (Refer to
applicable technical manual.)
a.
Set tank pressurizing valve to 50 psi.
b.
Set relief valve to 3,750 psi.
c.
Set volume output to 8 gpm.
d.
Set pressure compensator to 3,000 psi.
NOTE
If pressurizing both flight control
systems at once, use two test stands.
3.
If applying power to utility system test
connections (3), adjust test stand as follows:
(Refer to applicable technical manual.)
a.
Set tank pressurizing valve to 50 psi.
b.
Set relief valve to 3,750 psi.
c.
Set volume output to 12 gpm.
d.
Set pressure compensator to 3,000 psi. If
starting main engines, set compensator to
3,350 psi.
NOTE
Deleted.
DISCONNECT POWER
4.
Shut down test stand. (Refer to applicable
technical manual.)
5.
Disconnect hoses from test connections (1, 2, or
3). Install caps on connections.
FOLLOW-ON MAINTENANCE:
Install access cover on No. 1 flight control connections
and close panel on No. 2 flight control and utility
hydraulic system connections, as needed (Task
2-2).
END OF TASK
Change 3
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