TM 55-1510-220-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
CAUTION
Monitor oil temperature closely during ground operation with
propellers in FEATHER due to lack of air flow over oil cooler.
*3. Engine low idle speed - Check 52 to 55% N1.
E11
*4. Propeller manual feathering - Check as follows:
F14-18
a.
Condition lever - LOW IDLE.
b.
Left propeller lever - FEATHER. Check that propeller feathers with no hesitation.
c.
Check for proper pedestal control detent position.
d.
Left propeller lever - HIGH RPM.
e.
Repeat procedure for right propeller.
*5. Engine acceleration - Check as follows:
E2,12-15
a.
Left power lever - Set 64% N, then rapidly move lever to maximum.
b.
Record the time required for N1 to reach 93.5%.
c.
Left power lever - Immediately retard to IDLE as N1 passes through 93.5%. Acceleration
E11
2-26
