S 495-020
(10)
Install rig pin E-1 in the rig pin hole at the left side of the control column torque tube.
S 015-021
(11)
Open the access door 315A to get access to the elevator aft quadrant.
S 495-022
(12)
Install rig pin E-2 in the rig pin hole at the bottom of the elevator aft quadrant.
(a)
Install the rig pin into the hole with hand pressure only.
E.
Adjust the Elevator Position Indicating System
S 865-023
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P7, Overhead Circuit Breaker Panel
1) 7E6, STAB TRIM L CONT
2) 7E7, STAB TRIM L S/O VALVE
3) 7E19, STAB TRIM R CONT
4) 7E20, STAB TRIM R S/O VALVE
(b)
P180, DC Power Distribution Panel
1) 180H8, ELEV/RUD VLV SYS 1
2) 180E7, ELEV/RUD VLV SYS 2
3) 180H23, ELEV/RUD VLV SYS 3
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4) 180E22, ELEV/RUD VLV SYS 4
S 865-024
(2)
Set the FLT CONTROL HYD POWER TAIL switches on the P461, Pilots' Overhead Maintenance Panel to NORM.
S 865-025
(3)
Set the STAB TRIM 2 and 3 switches on the control stand to AUTO.
S 865-026
CAUTION: DO NOT PRESSURIZE THE AUXILIARY PITOT SYSTEM TO MORE THAN 4.70
_______ PSIG. MAKE SURE THE PRESSURE CHANGE IS LESS THAN 5000 FEET FOR EACH MINUTE FOR THE STATIC SYSTEM. ALSO MAKE SURE THAT THE PRESSURE CHANGE IS LESS THAN 300 KNOTS FOR EACH MINUTE FOR THE PITOT SYSTEM. THOSE ARE TO PREVENT THE DAMAGE TO THE ELEVATOR FEEL COMPUTER WHICH IS A VERY EASILY DAMAGED INSTRUMENT.
(4) Do this task to pressurize the auxiliary pitot systems 1 and 2 to
4.70 psig: "Pitot Static System Pressurization" (AMM 34-11-00/201).
S 015-037
(5) Open these access panels for the applicable transmitter:
(a) 334KBL LO Elevator
(b) 334GBL LI Elevator
(c) 334GBR RI Elevator
(d) 334KBR RO Elevator
S 495-038
WARNING: DO NOT MOVE THE ELEVATOR CONTROLS WHEN THE RIG PINS E-1 AND E-2
_______ ARE INSTALLED. THE HYDRAULIC SYSTEM IS PRESSURIZED AND WILL MOVE THE ELEVATORS IF YOU OPERATE THE ELEVATOR CONTROLS. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(6)
Install the rig pin MS20392-4C through the crank and the inner rig pin hole of the bracket.
(a)
If you cannot install the rig pin, adjust the control rod until you can install the rig pin MS20392-4C.
(b)
Make sure the control rod adjustment is not more than the limits shown in Fig. 502. 1) If the control rod adjustment is more than the limits, turn
the transmitter body in the bracket:
a) Adjust the control rod to the center of its adjustment range.
b) Loosen the transmitter clamping screws.
c) Turn the transmitter body until you can install rig pin
MS20392-4C through the crank and the outer rig pin hole.
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d) Tighten the transmitter clamping screws to 5-10 pound-inches.
NOTE: Do not turn the transmitter body.
____
e) Remove the rig pin M520392-4C.
f) Adjust the control rod until you can install rig pin MS20392-4C through the crank and the inner rig pin hole.
(c) Install a lockwire thumb nut of the control rod.
S 715-039
(7)
Make sure these ELEVATORS surface positions show on the EICAS flight controls maintenance page:
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(110)
