TM 55-1510-222-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
b. Propeller levers - Move aft to
detent.
c. Propeller RPM - Check 1150 ±
50.
d. Propeller levers - HIGH RPM.
*18. Propeller low pitch stop - Check
one engine at a time as follows:
a. Aircraft -
Position crosswind.
b. Read the corrected propeller
torque in % at 1500 RPM from
figure 1.
E5
c. Propeller lever - HIGH RPM
(full forward).
d. Power levers - Set 1500 RPM.
e. Torquemeter - Read and record
torque.
f. Power lever - IDLE.
g. Torque reading taken in step e
must
equal
the
corrected
torque read from figure 2 in
step b within ± 2%.
h. Repeat procedure for other en-
gine. The difference in torque
readings between left and right
engines should not be greater
than 1%.
*19. Ice vanes - Check as follows:
a. Ice vane switches - RETRACT.
Check that VANE EXT annun-
ciator lights illuminate.
b. Ice vane power select switch -
STBY.
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