S 865-306
(5)
Make sure that these circuit breakers on the P11 panel are closed:
(a)
11B19 or 11A19, STAB TRIM ALT (IF INSTALLED)
(b)
11C12, STAB TRIM SHUTOFF LEFT
(c)
11C13, STAB TRIM SHUTOFF RIGHT
(d)
11H11 or 11C05, STAB TRIM CONT L
S 415-430
(6) Close the access door for the forward stabilizer compartment, 311AL
(AMM 06-42-00/201). ú ú TASK 27-31-00-735-250 ú7. Single Hydraulic Source - Test
______________________________
NOTE: This is a scheduled maintenance task.
____
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
B.
Prepare for the Test
S 865-251
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-252
(2)
Make sure these circuit breakers on the overhead panel, P11, are closed:
(a)
EICAS (6 locations)
(b)
11K9, LEFT ENGINE OIL PRESS
(c) 11K35, RIGHT ENGINE OIL PRESS ú C. Do the Test For Single Hydraulic Source
S 215-253
(1) Make sure the L, R, and C FLT CONTROL SHUTOFF switches on the right side panel, P61 are at the ON position.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-00
ALL ú ú 06.1 Page 582R ú Sep 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 865-254
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 left hydraulic system (AMM 29-11-00/201).
(a)
Operate the control columns through full travel then put them to the neutral position. 1) Make sure the elevators move correctly to the control
column movement.
(b)
Remove the power from the left hydraulic system
(AMM 29-11-00/201).
S 865-255
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.
(3)
Pressurize the center hydraulic system (AMM 29-11-00/201).
(a)
Operate the control columns through full travel then put them to the neutral position. 1) Make sure the elevators move correctly to the control
column movement.
(b)
Remove the power from the center hydraulic system
(AMM 29-11-00/201).
S 865-256
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.
(4)
Pressurize the right hydraulic system (AMM 29-11-00/201).
(a)
Operate the control columns through full travel then put them to the neutral position. 1) Make sure the elevators move correctly to the control
column movement.
(b)
Remove the power from the right hydraulic system
(AMM 29-11-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-00
ú ALL ú
ú ú ú 06.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 582SSep 28/02
A
757 MAINTENANCE MANUAL
ELEVATOR - REMOVAL/INSTALLATION
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