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TM-1-1510-225-MTF Army Model C-12 Aircraft Manual | Next
HIGH IDLE |
CAUTION
TM 1-1510-225-MTF
PROCEDURE
TAXIING (CONT)
TROUBLESHOOTING
REFERENCE
*4. Magnetic compass - Check for free-
dom of movement.
B4
ENGINE RUNUP
1. Nose wheel - Center.
*2. PARKING BRAKE - Set. The parking
brake must lock without undue pres-
sure on the brake pedals and release
cleanly when PARKING BRAKE
handle is reset.
G5
*3. Engine low idle speed - Check 61 to
63% N1 and propeller at 1100 RPM
minimum.
E1
*4. Manual propeller feathering - Check
as follows:
F14,15
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.
(a) CONDITION lever - LOW
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 pro-
peller.
2-28
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