TM 55-1520-240-23-6
7-16.1
FLUSHING SERIOUSLY CONTAMINATED FLIGHT CONTROL OR UTILITY HYDRAULIC
SYSTEMS
(Continued)
7-16.1
RAMP SYSTEM
33.
Set RAMP switch (15) to ON.
34.
Turn pin (16) on sequence valve (17) to horizontal
position.
Do not cycle cargo door with ramp in
full up position. Damage to door and
fuselage will occur.
35.
Set RAMP CONTROL valve handle (18) to DN.
When ramp is fully down, set handle to UP.
36.
Move RAMP CONTROL valve handle (18) to
DN. When ramp is at mid position, move handle
to STOP.
37.
Turn pin (16) on sequence valve (17) to vertical
position.
38.
Pull up and hold MANUAL OPER knob (19) on
sequence valve (17).
39.
Release MANUAL OPER knob (19).
40.
Repeat steps 34 thru 39 six times.
7-111