AFDS AIL FORCE LIM
4) AUTO FLT CONT SYS A SNSR EXC AC
5) AUTO FLT CONT SYS A FCC DC
6) AUTO FLT CONT SYS A ENGAGE INTLK A
7) AUTO FLT CONT SYS A WARN LIGHT BAT
S 485-009
(10) Install the test set:
(a)
Connect the power cable between the test set and the D152 outlet of the electronic equipment rack.
(b)
Connect the test set between the actuators and the neutral shift sensor: 1) Disconnect the D1681 (system A) and D1687 (system B)
connectors from the autopilot actuators. 2) Connect the test set to the actuator A and actuator B. 3) Connect the VTMV to the LVDT FEEDBACK J10A and J11A on the
test set. 4) Disconnect the D1829 (system A) or D1677 (system B) connector of the neutral shift sensor. 5) Connect the test cable between the sensor and "A SENSOR" on the test set.
(c) Set the switches on the test set as shown: 1) LVDT FEEDBACK switches (S-2A, S-2B) to ON. 2) LVDT EXCITATION switches (S-5A, S-5B) to ON. 3) NSS EXCITATION switch S-6A to ON, S-6B to OFF. 4) NSS FEEDBACK switches (S-7A, S-7B) to OFF. 5) SOLENOID EXCITATION switches (S-3A, S-4A, S-3B and S-4B) to
ON. 6) CURRENT SELECT switch (S-9) to A T-VALVE. 7) A&B SOLENOIDS switches (S-8A, S-8B, and S-11) to A NORMAL,
B NORMAL and ON. 8) ACTUATOR SELECT switch (S-12) to A+B COMMON.
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9) POWER switch (S-1) to ON.
NOTE: Lights L-1, L-2A, L-3A, L-2B, L-3B, L-4A, L-4B, and
____ L-5A must be ON. Light L-5B must be OFF.
S 865-010
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL
_______ CONTROL SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDER, ELEVATORS, FLAPS, SLATS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(11)
Set the hydraulic systems A and B switches on the P5 panel to the On position
S 865-011
(12)
Close the SHUTOFF VALVES FLT CONT circuit breaker on the P6 Circuit Breaker Panel and remove the DO-NOT-CLOSE tag.
G. Sensor Adjustment
S 865-012
(1)
Make sure that the elevator and tab control system is in the rigged position (Ref 27-31-00/501).
S 825-013
(2)
Adjust the sensor:
(a) Adjust the position control knob, R -1A, on the test set until you get the lowest value on the meter.
NOTE: The A/P actuators are at null when the meter shows the
____
lowest value.
(b)
Adjust the position control knob, R-1A, on the test set to move the elevator surfaces down until the voltage at the J10A and J11A increases to 2.00 +/- 0.05 volts. Keep the control knob at this position.
(c)
Make sure that the right elevator trailing edge is aligned with the index +/- 0.6 inch on the tail cone.
(d)
Remove the VTMV.
(e)
Connect the VTVM to J7A and J8A (NSS FEEDBACK) on the test set.
(f)
Do this adjustment: 1) Lightly loosen the screw on the sensor clamp.
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2) Turn the sensor housing clockwise slowly until you get
1.348 +/-0.005 volts.
NOTE: At the end of the sensor shaft, you can find the
____ index mark on the sensor housing. Turn the sensor counterclockwise approximately 6 degrees against the index mark on the sensor clamp.
3) Tighten the clamp screw 8 to 12 pound-inches. 4) Remove the lockwire from the thumb nut on the
microadjustment rod. 5) Turn the thumb nut until you get 1.348 +/-0.03 volts. 6) Use the horizontal stabilizer trim wheel to move the
stabilizer leading edge down.
7) Make sure that the voltage decreases.
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