TM 55-1520-240-23-6
7-16
FILLING AND BLEEDING FLIGHT CONTROL HYDRAULIC SYSTEMS
(Continued)
7-16
13.
Disconnect drain tube (19) from case drain port
(20) of No. 1 pump (21).
14.
Make sure case of No. 1 pump (21) is full of
hydraulic fluid (E199). Fill case with fluid through
case drain port (20) as required.
15.
Have helper rotate rotary wings at least 10
complete turns by pulling blades around in
normal direction. Use blade tiedown lines on
forward rotor blades. Turn rotors until hydraulic
fluid flows from case drain port (20). Use
containers and cloths (E120).
16.
Connect case drain line (19) to case drain port
(20).
17.
Disconnect test stand pressure line (7) from
PRESSURE connection (4) and test stand return
line (8) from SUCTION connection (6).
18.
Replace dust covers (3) on PRESSURE
connection (4) and dust cover (5) on SUCTION
connection (6).
19.
Install cover (2) and tighten six fasteners (1).
20.
Service No. 1 reservoir (Task 1-61 or 1-63).
INSPECT
7-101
