(c)
11G17, CSEU 1R AC
or FLT CONT ELEC 1R AC
(d)
11G27, CSEU 2R AC
or FLT CONT ELEC 2R AC
S 865-744
(3)
Put the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel to NORM.
S 865-745
(4)
Remove electrical power (Ref 24-22-00).
S 415-746
(5)
Close the forward stabilizer compartment access door, 311AL (Ref 06-42-00).
TASK 27-41-00-715-643
6. Stabilizer Trim Secondary Brake Test
____________________________________
NOTE: This is a scheduled maintenance task.
____
A. References
(1) 24-22-00/201, Electrical Power - Control
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A
757 MAINTENANCE MANUAL
(2)
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
B.
Stabilizer Trim Secondary Brake Test (Fig. 502)
S 865-067
(1) Supply electrical power (Ref 24-22-00/201).
S 865-649
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES
_______ WHEN HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
(2)
Pressurize the right and center hydraulic systems
(Ref 29-11-00/201).
S 215-904
(3)
Make sure that the RIGHT STAB TRIM SHUTOFF switch on the P10 panel is at NORM.
S 215-905
(4)
Make sure that the CENTER STAB TRIM SHUTOFF switch on the P10 panel is at CUTOUT.
S 865-906
(5)
Move the stabilizer at least four units of trim away from one end of the travel range. Use the captain's or first officer's stabilizer-trim control-wheel-switches to move the stabilizer to this position.
S 865-907
(6)
Push and hold the BRAKE BYPASS valve button on the right
stabilizer-trim control module.
NOTE: The button is on the bottom of the unit.
____
The force necessary to push the button should be less than 25 pounds (111 newtons). You should push the button smoothly. If the force necessary to push the button is more than 25 pounds (111 newtons), remove the hydraulic power, push the button more than once, then supply the hydraulic power.
S 865-908
(7)
Move the stabilizer-trim control-wheel-switches in the airplane nose up direction (stabilizer leading edge down).
S 865-909
(8)
Hold the switches in this position for approximately 10 seconds.
(a)
Make sure that there is no stabilizer movement.
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27-41-00
ALL ú ú 02 Page 580K ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 865-910
(9)
Release the stabilizer-trim control-wheel-switches, then release the BRAKE BYPASS valve button.
S 865-911
(10)
Move the stabilizer-trim control-wheel-switches up and then down to make sure the stabilizer operates correctly.
S 865-912
(11)
Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to CUTOUT.
S 865-913
(12)
Put the CENTER STAB TRIM SHUTOFF switch on the P10 panel to NORM.
S 865-914
(13)
Push and hold the BRAKE BYPASS valve button on the left stabilizer trim control module.
S 865-915
(14)
Move the stabilizer-trim control-wheel-switches in airplane nose down direction (stabilizer leading edge up).
S 865-916
(15)
Hold the switch in this position for approximately 10 seconds.
(a) 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 4(42)
