TM 55-1510-222-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
CRUISE (CONT)
vertical speed indicator indica-
tions should return to their
original readings.
*9. Propeller synchrophaser - Check
capturing ability of the synchro-
phaser by establishing a small out
of synchronization condition, then
turning the synchrophaser on. Syn-
chronization should be established
and held within a few seconds.
10. Speed check at maximum cruise
power - Perform as required (Sec-
tion IV).
11. Maximum power lever position
check - Perform as required (Sec-
tion IV).
12. Engine acceptance check - Perform
as required (Section IV).
*13. Engine ice vanes - Check operation
as follows:
a. #1 and #2 ice vane power selec-
tor switches (2) - MAIN.
b. #1 and #2 ice vane control
switches - ON. Check
c. #1 and #2 VANE EXTEND
annunciators illuminated.
d. Torquemeters - Monitor for ap-
proximately a 10% drop in
torque with ice vanes extended.
e. #l and #2 ice vane control
switches - Retract (up).
f. Torquemeters - Monitor for an
increase in torque.
2-48
