(a)
Put the four TAIL switches in the SHUTOFF position.
S 865-126
(6)
Make sure the upper and lower YAW DAMPER ENGAGE switches are OFF.
F.
Rudder and Rudder Trim Control System Operational Test
S 715-143
(1)
Make sure these amber messages do not show on the upper EICAS:
(a)
RUD RATIO SNGL
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A
747-400
MAINTENANCE MANUAL
ADJUSTMENT CRANK
CAPTAIN'S RUDDER PEDALS
CAPTAIN'S FIRST OFFICER'S RUDDER PEDALS RUDDER PEDALS
SEE A SEE B
PEDAL ARM
PUSHROD
(EXAMPLE)
RUDDER RB CABLE
FORWARD QUADRANT RIG
RIG PIN E-1PIN R-3 RIG PIN R-1
(R-2 FOR THE FIRST CABIN FLOOR
OFFICER'S PEDALS) INTERCOSTAL
RA CABLE
BUSROD
NOSE WHEEL
STEERING ROD
CAPTAIN'S RUDDER PEDALS
A
POSITION TRANSDUCER FOR THE RUDDER PEDALS
PUSHRODS FROM THE FIRST OFFICER'S RUDDER PEDALS
FIRST OFFICER'S RUDDER PEDALS
B
Rudder and Rudder Trim Control System Adjustment
Figure 501
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A
747-400
MAINTENANCE MANUAL
POWER CONTROL PACKAGE SEE D
RUDDER AFT QUADRANT SEE C
POWER CONTROL PACKAGE
AFT TURNBUCKLES
SEE D
SUPPORT BRACKET
PIN R-4 RIG
INPUT CONTROL ROD
CABLE RETAINER
QUADRANT CRANK FEEL, CENTERING AND TRIM MECHANISM
RUDDER AFT QUADRANT
CABLE RB CABLE RA
RUDDER AFT QUADRANT
C
Rudder and Rudder Trim Control System Adjustment
Figure 502 (Sheet 1)
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A
747-400
MAINTENANCE MANUAL
UPPER ACTUATOR FRONT SPARFOR THE FOR THEUPPER RUDDER UPPER RUDDER
CENTER ACTUATOR FOR THE UPPER RUDDER
POWER CONTROL
MODULE FOR THE RATIO CHANGER UPPER RUDDERFOR THE UPPER RUDDER
LOWER ACTUATOR FOR THE UPPER RUDDER
RIG PIN
R-4
FEEL, CENTERING AND TRIM MECHANISM
RB CABLE
RA CABLE FRONT SPAR FOR THE LOWER RUDDER
UPPER ACTUATOR
FOR THE
POWER CONTROLLOWER RUDDER MODULE FOR THE LOWER RUDDER
RATIO CHANGER
FOR THE
LOWER RUDDER
LOWER ACTUATOR FOR THE LOWER RUDDER
POWER CONTROL PACKAGES
D
Rudder and Rudder Trim Control System Adjustment
Figure 502 (Sheet 2)
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747-400 MAINTENANCE MANUAL
(b) RUD RATIO DUAL
S 215-127
(2)
Make sure these messages do not show on the lower EICAS:. RUDDER RATIO RUD TRIM CTR
S 715-008
(3)
Do these steps to do a test of the adjustment crank of the rudder pedal (Fig. 501).
(a)
Turn the handle to adjust the captain's rudder pedals fully in each direction. 1) Make sure the rudder pedals move.
(b)
Turn the handle to adjust the first officer's rudder pedals fully in each direction. 1) Make sure the rudder pedals move.
S 715-009
(4)
Do these steps to do a test of the rudder pedals (Fig. 501).
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