(c)
Disconnect the voltmeter from the power source.
S 434-054
(6)
Connect the airplane electrical connector to the autopilot servo.
S 084-053
(7)
Remove rig pin R3.
S 714-052
(8)
Do the "Test the Servo Installation" steps.
TASK 22-13-01-714-055
6. Test the Servo Installation
___________________________
A. Equipment
(1) Nose Gear Steering Valve Lockpin - A09003-1
B. References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 22-00-02/201, Autoflight BITE
(3)
AMM 24-22-00/201, Electrical Power - Control
(4)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
C. Access
(1)
Location Zone 324 Vertical Stabilizer, Rear Spar to Trailing Edge
(2)
Access Panel
324AL Body to Fin Seal
D. Test the Servo
S 864-074
WARNING: LOCK THE NOSE GEAR STEERING WHEN MOVEMENT OF THE RUDDER IS
_______ SCHEDULED. THIS WILL PREVENT INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Move the towing lever on the nose gear metering valve module to the TOW position.
(2)
Install the nose gear steering valve lockpin (AMM 09-11-00/201).
S 864-057
(3)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11C12, STAB TRIM SHUTOFF LEFT
(b)
11C13, STAB TRIM SHUTOFF RIGHT
(c)
11E17, FLT CONT CMPTR PWR LEFT
(d)
11E18, FLT CONT CMPTR SERVO LEFT
(e)
11E20, FLT CONT CMPTR PWR CENTER
(f)
11E21, FLT CONT CMPTR SERVO CENTER
S 434-075
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
22-13-01
ALL ú ú 01 Page 411 ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(g)
11E35, FLT CONT CMPTR PWR RIGHT
(h)
11E36, FLT CONT CMPTR SERVO RIGHT
(i)
11H17, FLT CONT SHUTOFF TAIL LEFT
(j)
11H18, FLT CONT SHUTOFF TAIL CENTER
(k)
11H28, FLT CONT SHUTOFF TAIL RIGHT
S 864-058
WARNING: MAKE SURE ALL PERSONS AND STANDS ARE CLEAR OF CONTROL SURFACES
_______ AND CONTROL COLUMNS BEFORE HYDRUALIC SYSTEMS ARE PRESSURIZED. THE CONTROL SURFACES CAN MOVE WHEN A HYDRAULIC SYSTEM IS PRESSURIZED. THIS COULD CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(4)
Set the L, C, and R FLT CONTROL SHUTOFF switches on the P61 panel in the ON position.
S 864-059
(5)
Set the L and R STAB TRIM switches on the P10 panel in the NORMAL position.
S 864-060
(6)
Pressurize the left, center, and right hydraulic systems (AMM 29-11-00/201).
S 984-068
(7)
Push the left and right rudder pedals through full travel three times to operate the rudder system.
S 824-080
(8)
Use the rudder trim switch to center the rudder until the trailing edge is less than |.15 inches from the index mark.
(a)
Make sure you can freely put rig pin R3 into its hole.
(b)
Remove rig pin R3.
S 744-067
(9) Do the MCDP Ground Test 66-XDCR OUTPUTS (AMM 22-00-02/201).
(a)
Use the YES/ADV switch to move the test forward until the top line of the MCDP shows 66 RUD SURF DEG.
(b)
With the rudder pedals released, make sure the MCDP shows 00.0 |0.6 degree on the bottom line of the display.
S 744-063
(10) Do the MCDP Ground Test 09-SERVO RUD (AMM 22-00-02/201).
(a) Make sure no MCDP fault messages show during the test.
S 744-083
(11) Do the MCDP Ground Test 69-RUD SURF LIM (AMM 22-00-02/201).
(a) Make sure the rudder positive and negative limits are 22.8 degrees minimum for the left, center, and right servos.
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