TM 55-1520-240-23-6
7-15
FLUSHING EXTERNAL POWER SUPPLY LINES — FLIGHT CONTROL HYDRAULIC
SYSTEM
(Continued)
7-15
2.
Release six fasteners (5) and remove cover (6).
3.
Remove dust covers (7) from PRESSURE
connection (8) and dust cover (9) from SUCTION
connection (10).
NOTE
Test stand filters must be cleaned
before connecting test stand to
helicopter.
Make sure filter assembly kit
ADHT6814-M9716M is installed in
test stand pressure hose.
To operate hydraulic test stand, refer
to applicable manual.
4.
Connect test stand pressure line (11) to
PRESSURE connection (8) and test stand return
line (12) to SUCTION connection (10).
5.
Open shutoff valve in test stand return line.
Keep test stand bypass valve closed.
Otherwise, contaminants could
re-enter the system.
6.
Set test stand to deliver 10 gpm at 500 psi
pressure.
7.
Start test stand and slowly fill lines with hydraulic
fluid. Check system for leaks.
8.
Increase test stand pressure to 700 psi and hold
for 15 minutes.
9.
Reduce pressure and shut down test stand.
10.
Disconnect test stand pressure line (11) from
PRESSURE connection (8) and test stand return
line (12) from SUCTION connection (10).
11.
Replace dust cover (7) on PRESSURE
connection (8) and dust cover (9) on SUCTION
connection (10).
12.
Install cover (6) and tighten six fasteners (5).
INSPECT
7-94
