Piper Navajo Chieftain PA-31-350 Service Manual page 244

NAVAJO CHIEFTAIN SERVICE MANUAL
4.
If unable to adjust the indicator needle to provide proper indication (as in example below),
proceed with following steps:
EXAMPLE
Flap Position
UP
APPROACH
DOWN
Needed Indicator
Center of graduation
Center of graduation
Below down graduation
(a) Adjust indicator "Trimmer" so that the flap indicator needle is at the upper tangent of the
graduation at UP and APPROACH positions.
(b) Now adjust RT3 so that the needle falls within the DOWN graduation.
(c) Recheck indicator at UP, APPROACH and DOWN positions readjusting the "Trimmer"
as required.
(d) Check that VL and VR are still within the limits of VC as specified in step 17, and that
the position indicator agrees with.the flaps position in the UP, APPROACH and DOWN positions.
h. After the system is properly rigged for stroke and position indication, place the positive probe of
the digital voltmeter in RR at the amplifier and the negative probe in the RL. Select the flaps full DOWN and
monitor the voltage (ARL) throughout the extension. Voltage is not to exceed 0.15 volts at any time.
NOTE
The system should be allowed to warm up for approximately
five minutes before making any electrical adjustments.
1. Run the flaps through three complete UP, DOWN cycles to ensure proper operation of flaps.
THIS SPACE INTENTIONALLY LEFT BLANK
Revised: 3/31/94
SURFACE CONTROLS
1K4