TM 1-1520-238-T-5
7–91
7–21.
UTILITY HYDRAULIC SYSTEM – MAINTENANCE OPERATIONAL CHECK (cont)
7–21
Task
Result
bd. Move pilot cyclic stick. Track stick motion
with hydraulic servocylinder movements to
verify proper emergency hydraulic flight
controls operation.
If emergency hydraulic flight controls do not
operate properly and EMERG HYD circuit
breaker is closed, go to paragraph 7–44.
If emergency hydraulic flight controls do not
operate properly and EMERG HYD circuit
breaker is open, go to paragraph 7–43.
be. On pilot ELEC PWR panel (fig. 7–49), set
BATT/EXT PWR switch to BATT.
bf. Set EMERG HYD switch to OFF.
bg. On pilot power quadrant (fig. 7–48), check
that engine NO 1 and engine NO 2 PWR
levers are in OFF position.
bh. On pilot ELEC PWR panel set BATT/EXT
PWR switch to OFF.
bi. Service utility hydraulic reservoir, if required
(TM 1-1520-238-23).
9. Remove external power – electrical (TM 1-1520-238-23).
10. Disconnect maintenance headset (TM 1-1520-238-T-4).
11. Close and secure all access panels and doors opened during this maintenance operational check
(TM 1-1520-238-23).
END OF TASK
