TM 55-1510-222-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
h. Repeat step g by retarding right
power lever. with left power le-
ver above 89% N1.
*15. Propeller overspeed governors -
Check as follows:
F1-3
a. Propeller levers - HIGH RPM.
b. Propeller governor test switch -
Hold in TEST position.
c. Left engine power lever - Ad-
vance until overspeed governor
governs propeller (1540 to
1580 RPM). Observe tempera-
ture 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.
*16. Autoignition system - Check as fol-
lows:
a. Power levers - Set above 25%
torque.
b. Autoignition switches (2) -
ARM.
c. Power levers - Retard.
d. Ignition annunciator lights - il-
luminated (14 to 20% torque).
*17. Primary governors - Check as fol-
lows:
F1-3
a. Power levers - Set 1500 RPM.
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