TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
CAUTION
During
ground
operation
with
propellers
in
FEATHER, Monitor oil temperature closely, due to
lack of air flow over oil cooler. If necessary, move
propeller control out of FEATHER to keep oil
temperature within limits.
*3.
Engine low idle speed - Check 62% N1, with
propellers feathered.
*4.
Propeller feathering - Check as follows:
(a)
CONDITION lever - HIGH IDLE.
(b)
Left PROP lever - FEATHER. Check that
propeller feathers with no hesitation.
(c)
Check for proper pedestal control detent
position.
(d)
Left PROP lever - HIGH RPM.
(e)
Repeat procedure for right propeller.
*5.
Engine acceleration - Check as follows:
(a)
Left POWER lever - Set 64% N1, then
rapidly move lever to maximum forward
travel. Acceleration time required for N1 to
reach 93.5% is 2.5 to 4.0 seconds.
(b)
Left POWER lever - Immediately retard to
IDLE as N1 passes through 93.5%.
E1
F14, 15
E5, 14-20
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