S 424-052
(6)
On the left rudder forward quadrant, connect the pushrod for the nose wheel steering with the bolts, washers and nuts.
S 424-053
(7)
On the right rudder forward quadrant, connect the pushrod to the position transducer with the bolt, washer, and nut.
S 494-054
(8)
Install the rig pin, R-3, in the rudder forward quadrant.
S 494-055
(9)
Install the rig pin, R-1 or R-2, in the applicable pedal arm assembly.
S 494-056
(10)
Install the rig pin, R-4, in the feel, centering, and trim mechanism (Fig. 402).
S 424-057
(11)
Connect the bus rod with the bolt, washers, spacer, and nut.
S 424-058
(12)
Put the end of the flexshaft through the hole in the support structure.
S 424-059
(13)
Put the washer and the nut on the end of the flexshaft.
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A
747-400
MAINTENANCE MANUAL
UPPER ADJUSTABLE STOP
SEE A
INPUT CRANKFOR THE FEEL, CENTERING, AND TRIM MECHANISM
LOWER ADJUSTABLE STOP
A-A
RUDDER TRIM ACTUATOR
RIG PIN R-4
FEEL, CENTERING, A
AND TRIM MECHANISM
RUDDER AFT QUADRANT
A
CABLE RB CABLE RA
A
Rudder Control Cable Adjustment Figure 402 (Sheet 1)
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747-400 MAINTENANCE MANUAL
S 424-060
(14)
Put the end of the flexshaft in the jackshaft.
(a)
Turn the end of the flexshaft until it engages the pin in the jackshaft.
S 424-061
(15)
Install the clamps to attach the flexshaft to the structure.
S 424-062
(16)
Do these steps to connect the pushrods for the rudder pedals to the rudder forward quadrant:
(a)
Adjust the rudder pedals to their center position.
NOTE: You can do these steps to find the center position for
____
the rudder pedals:
-Use the adjustment crank to move the rudder pedals to their fully aft position.
-Move the rudder pedals to the fully forward position and count the number of times you turn the adjustment crank.
-Turn the adjustment crank back half the number of turns.
NOTE:THE TEMPERATURE OF THE AIRPLANE MUST BE |5`F OF THE AMBIENT TEMPERATURE AND MUST BE STABLE FOR AT LEAST 1 HOUR.
-40-20 0 20 40 60 80100120 AMBIENT TEMPERATURE (DEGREES F)
RA AND RB CABLE TENSION LOADS
Rudder Control Cable Adjustment
Figure 402 (Sheet 2)
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747-400 MAINTENANCE MANUAL
(b) Connect the pushrods to the rudder forward quadrant with the bolts, washers, and nuts.
NOTE: If the pushrods are not the correct length for you to install them, do the steps that follow to adjust them.
1) If it is necessary, do these steps to adjust the pushrods: a) Loosen the locknut for the aft rod end. b) Turn the pushrod until the forward rod end aligns with
its hole in the rudder forward quadrant. c) Make sure you can see the threads of the aft rod end through the inspection holes in the pushrod. d) Tighten the locknut.
S 424-063
(17)
Do these steps to connect the rudder cables to the forward quadrant:
(a)
Connect the cables, RA and RB, to the rudder forward quadrant.
(b) 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 2(91)
