(h)
Connect the feel unit control rod (3) to the bearing arm and feel unit crank (2) in the aft quadrant (4).
(i)
Connect the input control rod of the elevator autopilot servo module to the elevator aft quadrant (4).
S 834-016
(2)
Adjust the feel unit control rod (Ref 27-31-00/501).
S 834-017
(3)
Adjust the control rod of the elevator autopilot servo module (Ref 22-12-01/401).
S 864-018
(4)
Make sure the rig pin E-1 is installed (Fig. 401).
S 494-019
(5)
Install the rig pin E-2 at the bottom of the aft quadrant.
S 434-020
(6)
Connect the body cables E1A and E1B to the lower quadrant (9), E2A and E2B to the upper quadrant (10).
S 094-021
(7)
Remove the tension regulator holding tool (Fig. 401).
F.
Adjust the body cables (Fig. 403)
S 834-022
(1)
Adjust the turnbuckles to apply tension equally to cables E1A and E1B:
(a)
Make sure the values from the aft quadrant tension regulator are in the tolerances shown in graph I, Fig. 403.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
TENSION REGULATOR
SCALE READING
0 1 2 3 4 5 6 7 8 9 10
-40 -20 0 20 40 60
AMBIENT TEMP - DEGREES F
GRAPH I - TENSION REGULATOR SETTING FOR CABLES E1A AND E1B
-60 -40 -20 0 20 40 60 80 100 120
AMBIENT TEMP - DEGREES F
GRAPH II - CABLE TENSIONS FOR CABLES E2A AND E2B
Elevator Control Body Cable Tension Requirements
Figure 403
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b)
Make sure the cables are in the straight line through the pressure bulkhead.
(c)
While you tighten the cables, adjust the pressure seals in the pressure bulkhead if it is necessary to keep the cables straight.
(d)
Make sure the rig pins E-1 and E-2 can be removed by hand after you tighten the cables.
S 834-023
(2)
Adjust the turnbuckles to apply tension equally to cables E2A and E2B:
(a)
Make sure the tensions of cables E2A and E2B are in the tolerances shown in graph II, Fig. 403.
S 094-024
(3)
Remove the rig pins E-1 and E-2.
S 434-025
(4)
Install the locking clips on all body cable turnbuckles.
S 714-026
(5)
Operate the control column through a minimum of 2 cycles.
(a)
Make sure the control column moves freely.
S 394-027
(6)
Apply a layer of the corrosion preventive compound to the open areas of the threads of the turnbuckles.
G.
Do the Elevator Aft Quadrant Operational Test
S 864-028
(1)
Apply external power to the AC buses (Ref 24-22-00/201).
S 864-030
(2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P180 DC Power Distribution Panel
1) 180E7 ELEV/RUD VLV SYS 2
2) 180E22 ELEL/RUD VLV SYS 4
3) 180H8 ELEV/RUD VLV SYS 1
4) 180H23 ELEV/RUD VLV SYS 3
S 864-031
(3) Set all FLT CONTROL HYD POWER TAIL on the P461 Pilots' Overhead Maintenance Panel in NORM.
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本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 飛行操縱 FLIGHT CONTROLS 3(56)
