TM 55-1520-240-23-6
7-16.1
FLUSHING SERIOUSLY CONTAMINATED FLIGHT CONTROL OR UTILITY HYDRAULIC
SYSTEMS
(Continued)
7-16.1
Filter assembly kit
ADHT6814-M9716M must be
installed in test stand pressure
lines. Otherwise, system can be
contaminated.
NOTE
To operate hydraulic test stand, refer
to applicable manual.
Contamination is any foreign solids,
liquids or gaseous material present in
the hydraulic fluid.
FLIGHT CONTROL SYSTEM
1.
Disconnect return line (1) from hydraulic test
stand (2). Position return line in 55 gallon
container (3).
2.
Connect test stand (2) to No. 1 flight control
external connections (4).
3.
Apply external hydraulic power as follows: (Refer
to applicable 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.
Make sure blades are clear of
structures and test stand. Otherwise
damage to components can occur.
4.
Set FLT CONTR switch (5) to No. 1 ON.
5.
Set AFCS SYSTEM SEL switch (6) to OFF.
6.
Set flight controls (7, 8, and 9) to approximately
neutral position.
7.
Carefully cycle controls (7, 8, and 9) through full
range of travel for 4 minutes.
7-108
