Voltage Regulator Adjustment - Cessna T182 Series Service Manual

MODEL 182 & T182 SERIES SERVICE MANUAL
9-25. VOLTAGE REGULATOR ADJUSTMENT. (24V sembly power leads. Be sure to connect RED to RED
ELECTRICAL SYSTEM) (See figure 9-4.) and BLACK to BLACK when reconnecting leads.
a.
Remove access cover (39). h. Check to see if full "NOSE UP" to full "NOSE
b. Connect an external power source of 27. 5 volts
DOWN" and full "NOSE DOWN" to full "NOSE UP"
dc continuous to the aircraft electrical system, or if cycle time is 41±3 seconds.
an external power supply is not available, run the air-
craft engine at approximately 1000 RPM to maintain
the normal operating aircraft voltage.
c. Disconnect the electrical power leads to the
The trim motor should be allowed to cool
motor by unplugging the connectors installed in the
between voltage regulator adjustments for
RED and BLACK wire leading to the motor assembly.
approximately 5 minutes if several actua-
d.
Connect one lead of a dc voltmeter capable of tions of the motor becomes necessary dur-
measuring the aircraft voltage to either the RED or
ing adjustment.
BLACK wire leading to the motor and the other volt-
meter lead to a good aircraft ground.
i.
Readjust voltage regulator as required to obtain
e. Operate the electric trim switch to the Nose UP
41±3 seconds cycle time.
and Nose DOWN positions and check voltage present
at the RED and BLACK wires.
NOTE
f.
Adjust CTR 1 and CTR 2 adjustment screws on
the voltage regulator counterclockwise (CCW), then If trim tab travel time exceeds 44 seconds,
slowly turn adjustment screws clockwise (CW) until
lubricate and "free up" elevator trim sys-
a 13. 5 volt output is obtained for both (RED and
tem as required per section 2.
BLACK) leads.
g. Remove voltmeter and reconnect the motor as-
j. Check trim system for proper operation and re-
install all items removed for access.
SHOP NOTES:
9-12