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757
MAINTENANCE MANUAL
YAW DAMPER
MECHANISM
SUPPORT BRACKET
SEE A (2 LOCATIONS)
GROUND SPRING
(2 LOCATIONS)
INPUT CRANK (3 LOCATIONS)
SPRING RETAINER (2 LOCATIONS)
SUMMING
CONTROL RODS
LEVER
TO THE PCAs
INPUT CRANK
GROUND SPRING SUMMING
(2 LOCATIONS) LEVER
A
SERVO
LINKAGE
SEE B RATIO CHANGER POGO
YAW DAMPER SERVOS
FWD FWD
YAW DAMPER MECHANISM
A
1 AIRPLANES WITH SHEAR PINS
2 AIRPLANES WITH SHEAR RIVETS
YAW DAMPER INPUT YAW DAMPER
SERVO SHEAR PIN 1 CRANK BIAS POGO
SUMMING LINK ARM
SUPPORT
BRACKET
INPUT CRANK (3 LOCATIONS)
BOLT BUSHING BOLT
WASHER WASHER
NUT BUSHING NUTCONTROL RODS TO THE PCAs
A-A
SHEAR SERVORIVETS 2 SUMMING LINK
A
BOLT WASHER NUT (2 LOCATIONS)
YAW DAMPER SERVOS SERVO LINKAGE
B
Yaw Damper Summing Lever Installation
Figure 401
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757
MAINTENANCE MANUAL
MIDDLE POWER
CONTROL ACTUATOR
SEE D
YAW DAMPER
MECHANISM
SEE A
FEEL,
CENTERING,
AND TRIM
MECHANISM
SUMMING LEVER
SEE B A
A RATIO CHANGER POGO SEE E
YAW DAMPER BIAS POGO
SEE C
YAW DAMPER
SERVOS
FWD INBD
YAW DAMPER MECHANISMA
RIG PIN
HOLE R3
FEEL, CENTERING, AND TRIM MECHANISM
B
Rig Pin Installation Figure 402 (Sheet 1)
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757 MAINTENANCE MANUAL
POGO
RIG PIN HOLE R8
BOLT BUSHING WASHER NUT
YAW DAMPER BIAS POGO
C
POGO
RIG PIN HOLE R7
FWDRIG PIN HOLE R4
MIDDLE POWER CONTROL ACTUATOR D
RATIO CHANGER POGO E
Rig Pin Installation Figure 402 (Sheet 2)
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757 MAINTENANCE MANUAL
(4) S 864-032Operate the rudder trim knob on the aft electronic control panel, P8, until the rudder trailing edge aligns with neutral on the tail index plate.
(5) S 494-043Install rig pin R3 in the feel, centering, and trim mechanism.
(6) S 864-031Remove the power from the left, right, and center hydraulic systems (Ref 29-11-00/201).
TOWING LEVER LOCKPIN
TOWING LEVER (IN THE TOW POSITION)
TOWING LEVER SEE A TOWING LEVER
A
Nose Gear Steering Isolation Figure 403
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MAINTENANCE MANUAL
S 864-007
(7)
Move the FLT CONTROL SHUTOFF L, R, and C switches on the right side panel, P61, to OFF. Attach DO-NOT-OPERATE tags and make sure the switch position lights come on.
S 864-008
(8) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 2(69)
