27-41-00
ALL ú ú 02 Page 522 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 865-715
(9)
Move the stabilizer-trim control-wheel-switches up and then down to make sure the stabilizer operates correctly.
S 865-716
(10)
Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to CUTOUT.
S 865-717
(11)
Put the CENTER STAB TRIM SHUTOFF switch on the P10 panel to NORM.
S 865-718
(12)
Push and hold the BRAKE BYPASS valve button on the left stabilizer trim control module.
S 865-719
(13)
Move the stabilizer-trim control-wheel-switches in airplane nose down direction (stabilizer leading edge up).
S 865-888
(14)
Hold the switch in this position for approximately 10 seconds.
(a)
Make sure that there is no stabilizer movement.
S 865-720
(15)
Release the stabilizer-trim control-wheel-switches and the BRAKE BYPASS valve button.
S 865-721
(16)
Move the stabilizer-trim control-wheel-switches up and then down to make sure the stabilizer operates correctly.
K.
Stabilizer Trim Shutoff Switches Test
S 215-083
(1)
Make sure that electrical power is supplied (Ref 24-22-00).
S 865-084
(2)
Make sure the right and center hydraulic systems are pressurized (Ref 29-11-00/201).
S 215-886
(3)
Make sure that these circuit breakers on the overhead panel, P11, are closed:
(a)
11C12, STAB TRIM SHUTOFF LEFT
(b)
11C13, STAB TRIM SHUTOFF RIGHT
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-00
ALL ú ú 02 Page 523 ú Jun 20/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 865-747
(4) Put the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel to CUTOUT.
S 715-896
(5) AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; do the steps that follow to make sure the stabilizer operates correctly for the RIGHT and CENTER STAB TRIM SHUTOFF switches at the CUTOUT position: (a) Move the STAB TRIM control levers full forward and full aft slowly. 1) Make sure that the stabilizer does not move. (b) Let the STAB TRIM control levers go back to neutral position.
S 715-897
(6) AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; do the steps that follow to make sure the stabilizer operates correctly for the RIGHT and CENTER STAB TRIM SHUTOFF switches at the CUTOUT position: (a) Move the alternate stab trim switches full forward and full aft slowly. 1) Make sure that the stabilizer does not move. (b) Let the alternate stab trim switches go to the neutral position.
S 865-748
(7) Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to NORM.
S 715-899
(8) AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; do the steps that follow to make sure the stabilizer moves correctly for the RIGHT STAB TRIM SHUTOFF switch at the NORM position and the CENTER STAB TRIM SHUTOFF switch at the CUTOUT position: (a) Move the STAB TRIM control levers full forward and hold. 1) Make sure that the stabilizer leading edge moves up. (b) Let the STAB TRIM control levers go back to neutral position.
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27-41-00
ALL ú ú 03 Page 524 ú Sep 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 715-900
(9)
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; do the steps that follow to make sure the stabilizer moves correctly for the RIGHT STAB TRIM SHUTOFF switch at the NORM position and the CENTER STAB TRIM SHUTOFF switch at the CUTOUT position:
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