TM 55-1510-219-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
lights should not illuminate. With both
power levers above 85 to 90% N1, both
ARM lights should illuminate.
h. Retard left power lever below 85% N1.
Both lights should extinguish.
i. Repeat step h by retarding right power
lever, with left power lever above 85 to
90% N1.
* 14. Propeller overspeed governors -
F2,3
Check as follows:
a. Propeller levers - HIGH RPM.
b. Left propeller governor test switch - Hold
in TEST position.
c. Left engine power lever - Advance until
overspeed governor governs propeller
(1830
to
1910
RPM).
Observe
temperature and torque limits.
d. Left propeller governor test switch -
Release.
Propeller
RPM
should
increase.
e. Left engine power lever -IDLE.
f. Repeat steps b through e for right engine.
*15. Rudder boost - Check as follows:
a. Rudder boost switch - ON.
b. Left engine power lever -IDLE.
2-32
