27-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(12)
Pressurize the right hydraulic system (AMM 29-11-00/201). S 865-294
(13)
Make sure that the pressure gage shows less than 2350 psi (16,200
kPa).
NOTE:____ You can move the elevators to the airplane nose up and
nose down position before you check the pressure gage.
S 865-322
(14)
Remove the pressure from the right hydraulic system (AMM 29-11-00/201).
S 095-295
(15)
Remove the tee fitting and the pressure gage from the hydraulic line.
(a)
Connect the titanium pressure line to the flexible line.
S 865-324
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. IN:JURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
(16)
Pressurize the left hydraulic lines (AMM 29-11-00/201).
S 865-298
(17)
Do the steps that follow to remove the air from the elevator control system.
(a)
Move the elevator to the full airplane nose up position.
(b)
Move the elevator to the full airplane nose down position.
(c)
Do these steps 10 times.
S 795-297
(18)
Make sure there are no leaks at the hydraulic line.
S 865-318
(19)
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
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27-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
U. Elevator Position Indicating System Test
S 715-273
(1)
Do the test for the elevator position indicating system (AMM 27-38-00/501).
V.
Put the Airplane Back to Its Usual Condition
S 865-188
(1)
Remove electrical power (AMM 24-22-00/201).
S 215-189
(2)
Make sure the power from the left, right, and center hydraulic systems is removed (AMM 29-11-00/201).
S 865-190
(3)
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
(e)
11H17, FLT CONT SHUTOFF TAIL LEFT
(f)
11H18, FLT CONT SHUTOFF TAIL CTR
(g)
11H20, STAB TRIM CONT R
(h)
11H28, FLT CONT SHUTOFF TAIL RIGHT
S 215-191
(4)
Make sure that the L, R, and C FLT CONTROL SHUTOFF switches on the P61 panel are at the ON position.
S 215-192
(5)
Make sure that the RIGHT and CENTER STAB TRIM SHUTOFF valve switches on the P10 panel are in the NORM position.
S 415-193
(6)
Close the access door for the forward stabilizer compartment, 311AL (AMM 06-42-00/201).
TASK 27-31-00-735-199
5. Elevator Column and Quadrant Override Test
__________________________________________
NOTE: This is a scheduled maintenance task.
____
A. Equipment
(1)
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