(s)
Install the screws (15).
S 084-021
(2)
For the first officer's control column; Remove the protractor and adapter from the elevator torque tube crank.
S 094-022
(3)
For the captain's control column; Remove the rig pin E-1.
S 714-023
(4)
Do a check of the movement of the control column:
(a)
Move the control column forward and aft.
(b)
Turn the control wheel through full travel.
(c)
Make sure the control column is free to move.
(d)
Make sure the control column moves 12 degrees 30 minutes |1 degree from the neutral to the forward stop position.
(e)
Make sure the control column moves 25 degrees 10 minutes |2 degrees between the forward and the aft stop positions.
H.
Put the Airplane Back to Its Usual Condition
(1)
Remove the protractor and the adapter from the control column.
(2)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
S 864-037
(3)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P414, Power Distribution Center Panel - Left
1) 414D8, CAPTAINS PWR SEAT
S 084-025
S 864-027
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747-400
MAINTENANCE MANUAL
(b) P415, Power Distribution Center Panel - Right 1) 415H32, F/O PWR SEAT
S 864-028
(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
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
4) 180E22, ELEV/RUD VLV SYS 4
(b)
P7, Overhead Circuit Breaker Panel
1) 7D5, STICK SHAKER L
2) 7D19, STICK SHAKER R
3) 7E6, L STAB TRIM CONT
4) 7E19, R STAB TRIM CONT
5) 7A20, AUDIO CAPT
6) 7A21, AUDIO F/O
7) 7E24, AUTO FLT WARN
8) 7E9, MCP L
9) 7E18, MCP R
10) 7D7, FLT CONT CMPTR L SERVO
11) 7D8, FLT CONT CMPTR L PWR
12) 7D12, FLT CONT CMPTR C SERVO
13) 7D13, FLT CONT CMPTR C PWR
14) 7D14, FLT CONT CMPTR R SERVO
15) 7D15, FLT CONT CMPTR R PWR
S 864-029
(5)
Set all FLT CONTROL HYD POWER TAIL switches on the P461 Pilots' Overhead Maintenance Panel to NORM.
S 864-031
(6)
If the electrical power is not necessary, do this task: "Remove Electrical Power" (AMM 24-22-00/201).
S 414-032
(7)
Install the access panels.
I.
Do a Test of the Control Column Position Transmitter
S 714-034
(1)
Examine the position transmitter for the control column through the full range:
(a)
Push the captain's control column forward to the stop.
1) Make sure the COLUMN indication on the EICAS flight controls maintenance page is 11.5-13.5 degrees down.
(b)
Pull the captain's control column aft to the stop. 1) Make sure the COLUMN indication is 11.7-13.7 degrees up.
(c)
Move the control column to the neutral position.
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747-400 MAINTENANCE MANUAL
ELEVATOR FORWARD QUADRANT - REMOVAL/INSTALLATION
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