TM 1-1520-238-T-4
Change 8
4–63
4–13.
POWER PLANTS – MAINTENANCE OPERATIONAL CHECK (ENGINE 2) (cont)
4–13
WARNING
Make sure helicopter safed procedures are accomplished. Observe all
safety precautions during troubleshooting or maintenance tasks. Failure
to comply could result in death or serious injury.
Jet engine fuel is explosive, flammable, and toxic to skin, eyes, and
respiratory track. Work in well ventilated area away from open flames.
Wear protective clothing. If fuel comes in contact with the eyes or skin,
flush with water and seek medical aid immediately.
Do not allow spark or flame near helicopter when servicing or performing
maintenance on fuel system.
Make certain helicopter is grounded.
CAUTION
Ensure proper container is placed under engine 2 overboard fuel drain to
prevent fuel spillage. Failure to comply could result in hazardous material
spill.
1. Complete the maintenance operational check as follows:
Task
Result
a. On pilot power quadrant (fig. 4–26), check
that edge–light panel is lighted.
If pilot power quadrant edge–light panel does not
light, refer to paragraph 4–61.
b. On CPG power quadrant (fig. 4–27), check
that edge–light panel is lighted.
If CPG power quadrant edge–light panel does not
light, refer to paragraph 4–62.
c. On pilot power quadrant, set PWR NO 2
lever to LOCKOUT.
NOTE
Fuel boost pump does not operate through pilot FUEL panel BOOST switch
unless CROSSFEED switch is set to AFT TK.
d. On pilot FUEL panel (fig. 4–28), set
CROSSFEED switch to AFT TK, ENG 2
FUEL switch to ON, and BOOST switch to
ON.
e. On pilot caution/warning panel (fig. 4–29),
check that BOOST PMP ON indicator is
lighted.
If BOOST PMP ON indicator is not lighted, refer to
TM 1-1520-238-T-7 to troubleshoot fuel
crossfeed/boost system.
