TM 55-1520-240-23-6
7-13
FLUSHING FLIGHT CONTROL HYDRAULIC SYSTEM (RETURN LINES)
(Continued)
7-13
FLUSHING AFT UPPER CONTROLS RETURN
SYSTEM
NOTE
Procedure is same at both pivoting
and swiveling servocylinders. Pivoting
servocylinder shown here.
8.
Remove bypass hoses (5) from return lines (6
and 7) at both forward servocylinders (8).
Do not exceed 500 psi. Otherwise,
damage to components can occur.
Keep test stand bypass valve closed.
Otherwise, contaminants could
re-enter the system.
9.
Plug return lines (6 and 7).
10.
Turn on test stand. Set stand to 10 gpm at 500
psi and hold for 15 minutes. Check for leaks.
11.
Reduce pressure and shut down test stand.
12.
Remove plugs from return lines (6 and 7).
13.
Connect bypass hoses (5) to return lines (6 and
7).
INSPECT
7-83
