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27-41-00
ALL ú ú 01 Page 580N ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(a)
Move the alternate stab trim switches full forward and hold. 1) Make sure that the stabilizer leading edge moves up.
(b)
Let the alternate stab trim switches go to the neutral position.
S 865-928
(10)
Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to CUTOUT.
S 865-929
(11)
Put the CENTER STAB TRIM SHUTOFF switch on the P10 panel to NORM.
S 715-931
(12)
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Do the steps that follow to make sure the stabilizer operates correctly for the RIGHT STAB TRIM SHUTOFF switch at the CUTOUT position and the CENTER STAB TRIM SHUTOFF switch at the NORM position:
(a)
Move the STAB TRIM control levers full aft and hold. 1) Make sure that the stabilizer leading edge moves down.
(b)
Let the STAB TRIM control levers go back to neutral position.
S 715-932
(13)
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 STAB TRIM SHUTOFF switch at the CUTOUT position and the CENTER STAB TRIM SHUTOFF switch at the NORM position:
(a)
Move the alternate stab trim switches full aft and hold. 1) Make sure that the stabilizer leading edge moves down.
(b)
Let the alternate stab trim switches go back to the neutral position.
(14)
Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to NORM.
S 865-654
(15)
Remove the power from the center and right hydraulic systems (Ref 29-11-00/201).
S 865-933
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú 02 Page 580O ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 865-655
(16) Remove electrical power (Ref 24-22-00/201).
TASK 27-41-00-715-646
8. AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND;_____________________________________________________ Manual-Mechanical Stabilizer Trim Control Test______________________________________________
NOTE: This is a scheduled maintenance task.
____
A. References
(1)
24-22-00/201, Electrical Power - Control
(2)
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
B.
Manual-Mechanical Stabilizer Trim Control Test
S 865-656
(1) Supply electrical power (Ref 24-22-00/201).
S 865-657
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 hydraulic system (Ref 29-11-00/201).
S 865-934
(3)
Move the STAB TRIM control levers full forward and full aft.
S 215-935
(4)
Make sure that the stabilizer moves smoothly and freely through full travel.
S 865-936
(5)
Move only the left STAB TRIM control lever forward.
(a)
Make sure that the stabilizer does not move.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-41-00
ALL ú ú 02 Page 580P ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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