TM 55-1510-222-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
m. Cabin pressure dump switch -
Set to PRESS position.
*11. Generators and regulators - Check
by observing volt-loadmeters for
the following conditions:
a. Positive charging rate.
b. 27.5 to 29.0 volts.
c. A load indication not exceed-
ing 0.85.
d. Turn generators on one at a
time to insure that each genera-
tor comes on line.
e. Voltmeters must read within 1
volt of each other.
f. Load paralleling must be with-
in 10% of loadmeter reading.
*12. Inverter volt-frequency meters -
Check voltage between 110 and
120 volts and frequency between
390 and 410 Hz.
C36,37
*13. *Rudder boost - Check as follows:
a. Rudder boost /yaw control test
switch -
YAW CONTROL
TEST. Check that RUDDER
BOOST
annunciator
light
(flight director annunciator
panel) is illuminated.
b. Yaw
damper
pushbutton
switch (autopilot
controller,
pedestal extension) - Depress to
engage
yaw damper . Yaw
damper should not engage.
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