TM 1-1520-238-23
1-240
Change 8
1.73.
EXTERNAL POWER APPLICATION – HYDRAULIC (UTILITY) – continued
b. Connect AGPU return hose (1) to UTILITY
coupling (2).
(1) Remove cap (3) from coupling (2).
(2) Turn coupling nut (4) clockwise until seated
and locking teeth engage fully with teeth on
coupling (2).
c. Connect AGPU pressure hose (5) to UTILITY
coupling (6).
(1) Remove cap (7) from coupling (6).
(2) Turn coupling nut (8) clockwise until seated
and locking teeth engage fully with teeth on
coupling (6).
d. Connect battery (para 9.40).
e. Enter pilot station (para 1.56). Observe all
safety precautions.
f. Set BATT/EXT PWR switch (9) on ELEC PWR
control panel (10) to BATT.
(1) If external power is applied (para 1.70), set
BATT/EXT PWR switch (9) to EXT PWR.
WARNING
The hydraulic system is pressurized
to 3000 psi. Be certain that trapped
hydraulic pressure is released before
loosening any connections. Failure to
do so could result in death or serious
injury. If injury occurs, seek medical
aid.
CAUTION
Do not exceed 3000 PSI or damage to
hydraulic system and components may
occur.
g. Apply hydraulic pressure to helicopter
(TM 55-1730-229-12).
(1) Adjust AGPU to 3000 psi output pressure.
h. Perform maintenance task.
GO TO NEXT PAGE
8
2
4
3
1
5
7
8
6
2
6
M04-1826-2
M04-1826-6
9
10
