27-11-03
ALL ú ú 01 Page 213 ú Dec 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
LATERAL CONTROL FEEL, CENTERING, AND TRIM MECHANISM - MAINTENANCE PRACTICES
___________________________________________________________________________
1. General_______
A. This procedure contains these tasks:
-
Feel, Centering, and Trim Mechanism and Its Components - Removal
- Feel, Centering, and Trim Mechanism and Its Components -Installation
-
Feel, Centering, and Trim Mechanism - Adjustment/Test
TASK 27-11-14-022-008
2. Feel, Centering, and Trim Mechanism and Its Components - Removal________________________________________________________________
A. General
(1) This task contains two procedures, one to remove the feel, centering, and trim mechanism, and one to remove the trim actuator. Because this task contains two procedures, do only the applicable groups of steps.
To start one of these procedures, do the "Prepare for the Removal" group of steps. Then, do the group of steps that is necessary to remove the component.
B. References
(1)
06-44-00/201, Wing Access Doors and Panels
(2)
24-22-00/201, Electrical Power - Control
(3)
AMM 25-50-01/401, Ceiling Panels
(4)
29-11-00/201, Main (Left, Right, and Center) Hydraulic System
(5)
32-00-15/201, Landing Gear Door Locks
(6)
32-00-20/201, Landing Gear Downlocks
C.
Access
(1)
Location Zones
143/144 MLG Wheel Well
561 Rear Spar to Trailing Edge
(2)
Access Panel
561AB Aileron Quadrant
D.
Prepare for the Removal
(1)
Supply electrical power (Ref 24-22-00/201).
S 862-009
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27-11-14
ALL ú ú 01 Page 201 ú May 20/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 862-014
(2)
Open this circuit breaker on the overhead panel, P11, and attach a DO-NOT-CLOSE tag:
(a)
11J15, AILERON TRIM
S 212-010
(3) Make sure the downlocks are installed on the nose and main landing gear (Ref 32-00-20/201).
S 492-005
WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO INSTALL THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(4)
Open the doors for the landing gear and install the door locks (Ref 32-00-15/201).
E.
Lateral Trim Actuator - Removal (Fig. 201)
S 032-015
(1)
Disconnect these components:
(a)
The electrical connector from the trim actuator
(b)
The actuator from the actuator link
(c)
The actuator from the support box.
S 022-016
(2)
Remove the trim actuator.
F.
Feel, Centering, and Trim Mechanism - Removal (Fig. 201)
S 032-080
(1)
Disconnect these components from the feel, centering, and trim mechanism:
(a)
The control rods for the center and left autopilot lateral control servos (ALCSs) (2 locations)
(b)
The bus rod (for the lateral control override mechanism).
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27-11-14
ALL ú ú 01 Page 202 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
FWD
FEEL, CENTERING, AND TRIM MECHANISM
SEEA
BUS ROD
(TO THE LATERAL BOLT CONTROL OVERRIDE WASHER MECHANISM) NUT BOLT
(4 LOCATIONS)
WASHER SUPPORT NUT TRIM ACTUATOR BRACKET
ELECTRICALBOLT CONNECTORWASHER
ACTUATOR
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