TM 55-1510-219-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
a. Aircraft - Position crosswind.
b. Read the corrected propeller torque in %
at 1800 RPM from figure 2.
c. Propeller lever - HIGH RPM (full
forward).
d. Power levers - Set 1800 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 engine. The
difference in torque readings between left
and right engines should not be greater
than 1%.
*19. Ice vanes - Check as follows:
a. Power levers - Set 1800 RPM.
b. Ice vane switches to EXTEND. Verify
torque drop, and illumination of ICE
VANE EXT light.
c. Ice vane switches - RETRACT. Verify
return to original torque, and ICE VANE
light extinguished.
20. Power levers - IDLE.
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