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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
SPOILERS GAP-INCHES (0.06 MAX ALLOWED AT CLOSEST POINT.
RECORD INBOARD END FOR ALL SPOILERS AND OUTBOARD END
FOR SPOILERS 5,6,7, AND 8).
FLAPS-UP AND PRESSURIZED FOR 30 SECONDS MINIMUM BEFORE
RECORDING ANGLES.
(OUTBOARD 0.14` MAXIMUM ASYM ALLOWED [BEFORE TRIM ADJ])
FLIGHT SPOILER BREAKOUT AT 8` MINIMUM EITHER DIRECTION
CW ______________CCW ______________
NOTE:IF AIRPLANE IS FUELED DISTRIBUTE FUEL LOADSYMETRICALLY SO THAT EACH WING TANK ISWITHIN 5% OF EACH OTHER
A/P FUELED __________A/P ON JACKS __________
A/P UNFUELED ________ A/P ON GEAR ___________
RECORD DIMENSIONS AFTER CORRECTION
Flight Controls Surface Mismatch RecordFigure 503
A
757 MAINTENANCE MANUAL
FLIGHT CONTROLS SURFACE - INSPECTION/CHECK
__________________________________________
1. General_______
A. This procedure contains tasks that examine the rudder, elevators, ailerons, and spoilers for too much freeplay. Freeplay is the unwanted movement of a control surface when it is held in position by a fully powered power control actuator (PCA). Freeplay is measured at the trailing edge of the control surface and is caused by wear in the PCA linkages.
TASK 27-02-00-736-001
2. Elevator Freeplay - Check_________________________
A. General
(1)
Some freeplay in the PCA linkages is permitted, but the wear must be divided equally between the linkage components. If one component is worn more than the other components in the system, you must repair it.
B.
Equipment
(1)
Dial Indicator, Accurate to 0.001 inch
(0.025 mm) and a minimum stroke of 1 inch
(2.54 mm) - Commercially Available
(2) Device to Hold the Dial Indicator, tightly
against the fuselage
NOTE: A machine shop tool commercially
____ available (magnetic base with fixed rod and movable extension rod for dial indicator installation) can be used.##
(3)
Spring Force Scale, Push-Type (0 to 150 Pound
(0-68.0 Kg) Range) - Commercially Available
C.
References
(1)
24-22-00/201, Electrical Power - Control
(2)
27-31-05/601, Elevator Power Control Actuator
(3)
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
D.
Access
(1)
Location Zones
336 Left Elevator
346 Right Elevator
211 Control Cabin, Left
212 Control Cabin, Right
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
E. Prepare for the Inspection/Check
S 866-002
(1) Supply electrical power (Ref 24-22-00/201).
S 866-112
WARNING: THE AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND
_______ STABLILIZER ARE FULLY POWERED SURFACES. MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE CONTROL SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(2)
Supply pressure to the right and center hydraulic systems
(Ref 29-11-00/201).
S 866-065
(3)
Use the control wheel switches to move the horizontal stabilizer to approximately 6 units of trim.
S 866-117
(4)
Move the RIGHT STAB TRIM SHUTOFF and the CENTER STAB TRIM SHUTOFF switches on the control stand panel, P10, to the CUTOUT position.
S 866-067
(5)
Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags:
(a)
11C12, STAB TRIM SHUTOFF LEFT
(b)
11C13, STAB TRIM SHUTOFF RIGHT
S 866-004
(6)
Remove the power from the right and center hydraulic systems (Ref 29-11-00/201).
S 866-005
(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 866-006 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 1(24)
