TM 55-1520-240-23-6
7-10
FLUSHING FLIGHT CONTROL HYDRAULIC SYSTEM (PRESSURE LINES)
(Continued)
7-10
FLUSHING FORWARD UPPER CONTROLS
PRESSURE SYSTEM
NOTE
Forward pivoting servocylinder is
reached from right work platform.
Forward swiveling servocylinder is
reached from left work platform.
Pivoting servocylinder only shown
here.
7.
Remove bypass hoses (3) from pressure lines (4
and 5) at both forward servocylinders (6).
8.
Plug pressure lines (4 and 5).
Keep test stand bypass valve closed.
Otherwise, contaminants could
reenter the system.
9.
Turn on test stand. Set stand to 10 gpm at 500
psi. Slowly increase stand pressure to 700 psi
and hold for 15 minutes. Check for leaks.
10.
Reduce pressure and shut down test stand.
11.
Remove plugs from pressure lines (4 and 5).
12.
Connect bypass hose (3) to pressure lines (4
and 5).
NO BREAK - WORK HARDER
FLUSHING AFT UPPER CONTROLS PRESSURE
SYSTEM
NOTE
Aft pivoting servocylinder is reached
from left work platform. Aft swiveling
servocylinder is reached from right
work platform. Pivoting servocylinder
only shown here.
13.
Remove bypass hoses (7) from pressure lines (8
and 9) at both aft servocylinders (10).
14.
Plug pressure lines (8 and 9).
15.
Repeat steps 9 and 10.
7-66
