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757
MAINTENANCE MANUAL
5) Make sure that the torque that is necessary to move the opposite wheel is less than 4 pound-inches (0.45 Nm). 6) Remove the control-wheel adapter equipment.
H. Adjust the Aileron Body Cables A1A, A1B, A2A, and A2B (Fig. 502)
NOTE: Make sure that the control wheels are adjusted correctly (see
____ the control wheel adjustment procedure) before you do the aileron body-cable adjustment.
S 825-050
(1)
Center the aileron trim system by operating the aileron trim switches on the aft electronic-control panel, P8. Make sure that rig pin A1 can be easily put into the lateral feel, centering and trim mechanism. Make sure that the roller is centered on the feel cam.
S 035-051
(2)
Remove rig pin A1.
S 825-052
(3)
When new cables are installed, it is recommended that they be initially tightened to two times the rigging value shown in Table 1. Cycle the cables through their full travel 20 times and then decrease their tension to the value shown in Table 1.
NOTE: See AMM 20-10-03/401 for Control Cables Removal/Installation
____
instructions.
S 825-053
(4)
Do not adjust the aileron cables until these conditions are
satisfactory:
(a)
The airplane temperature must be stable (use a tolerance of |5°F) along the cable and have been stable for at least one hour.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú 01 Page 512 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757 MAINTENANCE MANUAL
(b) (c) (d) (e) (f) Make sure that the cables are not bent by the fairleads, rubstrips, or grommets that are in the system.Make sure that the cable guards are installed correctly and that the pulleys turn freely.Make sure that no more than two threads show at the turnbuckles when the system is rigged correctly.Make sure that the clip locks are installed on the turnbuckles.Make sure that you can see the rod-end threads through the control-rod inspection-holes after the adjustment is done.
(5) S 035-054Disconnect one end of the control rod from the lateral feel, centering, and trim mechanism. Disconnect the other end of the control rod from the lateral-control override mechanism.
(6) S 825-055Move the control wheels to neutral.
NOTE:____ To identify the neutral position, attach a rigging beam across the bottom of the control wheels. The neutral position is found when the control wheel surfaces are no more than 0.05 inch (1.27 mm) away from the rigging beam surface.
(7) S 825-056Adjust the body cables to the values shown in Table 1. that rig pins A1 and A2 can be easily installed. Make sure
(8) S 435-057Install rig pins A1 and A2.
(9) S 435-059Connect the control rod between the lateral feel, centering and trim mechanism and the lateral control override mechanism. Adjust the length if it is necessary. Make sure that the bolts at each end can be easily installed.
NOTE:____ If it is necessary, adjust the control rod end that is connected to the lateral-control override mechanism.
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