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N. have been completed.
G.  Mark wire bundle to identify clamp location inside control wheel hub and remove clamp.
H.  Disconnect the four pairs of stabilizer trim control switch leads at terminal block.
I.  Remove retainer from autopilot disconnect switch and carefully pul1 switch assembly from control wheel.
J.  Remove two screws which retain microphone switch and trigger assembly, and carefully pull assembly from control wheel.
NOTE:   The radio transmit switch is part of this assembly, if installed.
K.  Remove the two screws which retain the memory device and pull device from control wheel.
L.  Disconnect wires from memory device.
M.  Note and mark arrangement of color coded wires and disconnect wires from terminals of autopilot disconnect, microphone and radio transmit switches. See figure 402 for wiring configurations.
N.  Carefully disengage wire bundle from control wheel.
4.  Install Aileron Control Wheel
A.  Use a wire leader as required to position electrical wires within control wheel.
B.  Locate and connect proper color coded wires to autopilot disconnect, microphone, radio transmit switches, and memory device. Black-yellow and black-green wires connect to memory device. (See figure 402.)
NOTE:  Pull wires away from switch holes and install teflon sleeves before connecting. Tape and stow unused wires.
C.  Position microphone switch and trigger assembly in control wheel and secure with two screws. (See figure 401.)
D.  Position autopilot disconnect switch in control wheel and secure with retainer and one screw.
E.  Position memory device in control wheel and secure with two screws.
May 15/69 27-11-41 Page 405 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

G03220G03234
 Wiring Diagram  500 
27-11-41  Figure 402 (Sheet 1)  Aug 15/67 
Page 406 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

500  Wiring Diagram 
Aug 15/67  Figure 401 (Sheet 2)  27-11-41 
Page 407 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

F.  Coat accessible portions of wire bundle with Dow Corning compound No. 5.
G.  Position clamp at mark on wire bundle and secure bundle in control wheel hub with clamp.
CAUTION:  PROPER WIRE BUNDLE LENGTH BETWEEN COLUMN AND WHEEL MUST BE MAINTAINED TO ENSURE UNRESTRICTED CONTROL WHEEL TRAVEL.
H.  Coat control wheel splines with Dow Corning compound No. 5.
I.  Wrap wire bundle four turns around control wheel hub and mate splines on control wheel to control column to previously marked positions.
J.  Install special washer, and torque retaining nut to 85 to 140 pound-inches range.
K.  Secure retaining nut with cotter pin.
L.  Check that captain's and first officer's control wheels are in neutral by placing straightedge across upper ends of both wheels. One end of first officer's control wheel may be out of contact with straightedge a maximum of 0.20 inch. (See figure 403.)
M.  Remove all rigging pins.
N.  Ensure control wheel will rotate at least 105 degrees in each direction from neutral. Operation of wheel must be smooth, and free from binding.
O.  Match wire colors and connect the four pairs of stabilizer trim control switch leads at the terminal block. Secure with washer, lockwasher and nut.
P.  Test electrical circuits for continuity which were disturbed during removal/installation procedures.
500 
27-11-41 Page 408  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Aug 15/69 

Q.  While rotating the control wheel from stop to stop, test terminal block for resistance to ground, or wire to wire for minimum insulation value of 100 megohms at following points:
(1)  Between each wire and ground, and between wires VIOLET to RED, VIOLET to ORANGE, VIOLET to BLACK-ORANGE, RED to BLACK-ORANGE, RED to ORANGE, and BLACK-ORANGE to ORANGE.
R.  Install terminal cover and secure with two screws.
S.  Install medallion on control wheel by installing three bolts.

G03243
500  Aileron Control wheel alignment (Neutral Position) 
Aug 15/68  Figure 403  27-11-41 
Page 409 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

AILERON CONTROL WHEEL DRUM - REMOVAL/INSTALLATION
1.  General
A.  The aileron control wheel drum is removed and installed as an assembly. The disassembly and repair instructions are contained in applicable overhaul manual.
　
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