27-11-00
ALL ú ú 01 Page 501 ú Jun 20/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 865-005
WARNING: TO PREVENT INJURY OR DAMAGE, MOVE ALL PERSONS AND EQUIPMENT
_______ AWAY FROM THE CONTROL SURFACES BEFORE HYDRAULIC POWER IS SUPPLIED. STAY AWAY FROM THE CONTROL SURFACES DURING THEIR OPERATION.
(4)
Supply pressure to the left, center, and right hydraulic systems (Ref. 29-11-00).
E.
Aileron Response Test
S 215-006
(1)
Turn one of the two control wheels clockwise and hold it there for 2 seconds and do the checks that follow:
(a)
Make sure that the left aileron moves down and the right aileron moves up.
(b)
Make sure that the ailerons move smoothly from their full down position to their full up position.
(c)
Make sure that the amber SPOILERS light on the P5 panel is OFF. Make sure that the SPOILERS message does not come into view on the top EICAS display.
S 215-007
(2)
Turn one of the two control wheels counterclockwise and do the checks that follow:
(a)
Make sure that the left aileron moves up and the right aileron moves down.
(b)
Make sure that the ailerons move smoothly from their full down position to their full up position.
(c)
Make sure that the amber SPOILERS light on the P5 panel is OFF. Make sure that the SPOILERS message does not come into view on the top EICAS display.
F.
Single Hydraulic System Aileron Control Test
S 865-008
(1) Remove the power from the center and right hydraulic systems (Ref. 29-11-00).
NOTE: If the aileron surface is not powered, it can move down a
____ small distance. This condition is not unusual.
The aileron surface can move up when the control wheel is turned. This is because of the breakout of the wing override mechanism, and the aileron PCU summing lever which moves the rod ends when the PCU control valve bottoms.
S 865-009
(2) Supply pressure to the left hydraulic system only (Ref. 29-11-00).
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27-11-00
ALL ú ú 01 Page 502 ú Dec 20/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 215-010
(3)
Turn one of the two control wheels full clockwise and do the check that follows:
(a)
Make sure that the right aileron moves up when the control wheel is turned. Make sure that the left aileron does not move.
S 215-011
(4)
Turn the control wheel full counterclockwise and do the check that follows:
(a)
Make sure that the right aileron moves down when the control wheel is turned. Make sure that the left aileron does not move.
S 865-012
(5)
Remove the power from the left hydraulic system (Ref. 29-11-00).
S 865-013
(6)
Supply pressure to the center hydraulic system (Ref. 29-11-00).
S 215-014
(7)
Turn the control wheel full clockwise and do the check that follows:
(a)
Make sure that the right aileron moves up and the left aileron moves down.
S 215-015
(8)
Turn the control wheel full counterclockwise and do the check that follows:
(a)
Make sure that the right aileron moves down and the left aileron moves up.
S 865-016
(9)
Remove the power from the center hydraulic system (Ref. 29-11-00).
S 865-017
(10)
Supply pressure to the right hydraulic system only (Ref. 29-11-00).
S 215-018
(11)
Turn the control wheel full clockwise and do the check that follows:
(a)
Make sure that the left aileron moves down when the control wheel is turned. Make sure that the right aileron does not move.
S 215-019
(12)
Turn the control wheel full counterclockwise and do the check that follows:
(a)
Make sure that the left aileron moves up when the control wheel is turned. Make sure that the right aileron does not move.
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