(5)  
Return control wheel to center detent and check that ailerons are centered.

(6) 
 Disengage autopilot.

(7)  
Remove electrical and hydraulic power if no longer required.

512 
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512  A/P Aileron Actuator Adjustment 
Feb 20/85  Figure 501  22-11-251 
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505  A/P Aileron Actuator Linkage Wear Limits 
Oct 20/89  Figure 601 (Sheet 1)  22-11-251 
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A/P Aileron Actuator Linkage Wear Limits  500 
22-11-251  Figure 601 (Sheet 2)  Oct 20/86 
Page 602 
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500 A/P Aileron Actuator Linkage Wear LimitsOct 20/86 Figure 601 (Sheet 3) 22-11-251 Page 603/604BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

A/P ELEVATOR ACTUATOR - REMOVAL/INSTALLATION
EFFECTIVITY
SA ZS-SIA and on WA N235WA thru N259WA GJ B-2509 and B-2510
1.  General
A.  The actuators are installed on the aft bulkhead at station 1156 adjacent to the elevator power control units (Ref Chapter 27, Elevator and Tab Control System).
2.  Equipment and Materials
A.  Fire resistant hydraulic fluid - BMS 3-11
3.  Remove Actuator (Fig. 401)
A.  Depressurize hydraulic systems A and B (Ref Chapter 27, Elevator and Tab Control System -MP).
WARNING:  PRESSURIZING HYDRAULIC SYSTEMS WILL SUPPLY POWER TO RUDDER, AILERON, ELEVATOR, SPOILER AND SPEED BRAKE SYSTEMS. CARE SHOULD BE TAKEN TO ISOLATE OR TAG SYSTEMS NOT BEING TESTED TO PREVENT INJURY TO PERSONNEL OR DAMAGE TO AIRPLANE AND EQUIPMENT.
B.  Open all autopilot circuit breakers on P6 and P18 load control centers and attach DO-NOT-CLOSE tags.
C.  Remove tail cone access panel 3802 (Ref Chapter 12, Access Doors and Panels).
D.  Disconnect hydraulic lines at actuator ports and plug hydraulic lines.
E.  Remove electrical connector from actuator.
F.  Remove the clamp-bolt, washer, and nut that attach the lever assembly to the actuator. Remove the nut and washer that attach the output shaft of the actuator to the lever assembly.
G.  Look through the inspection hole for wear in the shear rivets. Hold the lever assembly and try to turn it at the shear rivet area. Make sure that there is no movement or distortion in the shear rivets.
H.  If there is wear in the shear rivets, then remove the lever assembly.
(1)  
Remove the bolt, washer, and nut that attach the lever assembly to the rod assembly.

(2)  
If it is necessary to remove the lever assembly for the hydraulic system ‘A’ autopilot actuator, remove the bolt, washer, and nut that attach the lever assembly to the second rod assembly.

I.  Remove actuator mounting bolts, washers and nuts, then remove actuator.
J.  Remove reducers from actuator ports and save. Install plugs in ports.
4.  Install Actuator
A.  Install reducers in actuator ports using new O-rings lightly lubricated with hydraulic fluid.
B.  Check that new unit is filled with hydraulic fluid and cap reducers.
C.  Hold actuator in position and install mounting bolts and washers.
NOTE: Ensure that chamfered (countersunk) side of washer is against head of the bolt.

May 01/00 22-11-261 Page 401
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A/P Elevator Actuator Installation  580 
22-11-261  Figure 40  Jun 20/84 
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D.  Place the lever assembly on the actuator and carefully align the splines.
NOTE: The position of a tooth not on the spline provides the access.
E.  If you removed the lever assembly from the rod assembly, then install the bolt, washer, and nut that attach the lever assembly to the rod assembly.
F.  For the lever assembly to the hydraulic system 'A' autopilot actuator, install the bolt, washer, and nut that attach the lever assembly to the second rod assembly.
G.  Install the clamp-bolt, washer, and nut to attach the lever assembly to the actuator, then install the washer and nut on the output shaft of the actuator. Tighten the nut on the output shaft, and then tighten the clamp-bolt.
　
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