S 864-006
 (5)  
If the electrical power is not necessary, do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 S 014-007

 (6)  
Open the ceiling panel in the main deck compartment below the control column.

 D.
Remove the Control Column

 (1)  
Remove the screws (15) and the dust seal cover (5).

 S 024-010

 (2)  
Remove the control column:

 (a)  
Hold the control column.

 S 034-008
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747-400 MAINTENANCE MANUAL
 (b)  
Disconnect the wire bundle (7) at the terminal strip.

 (c)  
Remove the clamp bolts (12) and the clamps (10) on the left and right sides.

 (d)  
Disengage the control column splines and lift the control column clear of the cabin floor.

 TASK 27-31-04-404-011
 3.  Control Column Installation___________________________
 A. Special Tools and Equipment
 (1)  
G12001-50 - Rig Pin Kit

 (2)  
4MIT65B80307-1 - Control Column Protractor (Preferred)

 (3)  
F52485-500 - Protractor (Optional)

 (4)  
3MIT65B80307-1 - Protractor Adapter, Control Column Assembly

 (5)  
2MIT65B80307 - Protractor Adapter - Crank Assembly, Elevator Torque Tube (Preferred)

 (6)  
MIT65B80326-6 - Protractor Adapter, Control Column Elevator Crank (Optional)

 B.
Consumable Materials

 (1)  
A00003 Sealant - Hole Filling Compound, Dow Corning Q-93007-2

 (2)  
A00168 Adhesive - RTV 1200 Clear

 C. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Wheel and Control Column, RH | 27-31-04 | 03 | 305 | | | 3 | Wheel and Control Column, LH | | | 300 | | | 5 | Dust Seal Cover | | | 5 | | | 6 | Seal Cover | | | 5 | | | 9 | Crank Assy | | | 240 | | | 10 | Clamp | | | 55 | | | 12 | Bolt | | | 40 | | | 13 | Washer | | | 45 | | | 14 | Nut | | | 50 | | | 15 | Screw | | | 15 | | | | | | | | 2......…........…...................................…...........….....…........1
 D. References
 (1)  
AMM 24-22-00/201, Manual Control

 E.
Access

 (1)  
Location Zone
 221 Control Cabin, LH
 222 Control Cabin, RH
 211 Passenger Nose to First Door, LH
 212 Passenger Nose to First Door, RH

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A
747-400 MAINTENANCE MANUAL
 F. Prepare for Installation
 S 284-012
 (1)  
Make sure that the large piece of the dust seal cover is on the aft side of the control column (Fig. 402).

 S 434-035

 (2)  
Install the plate of the control column with the fork on the aileron load limiter (Fig. 401).

 S 484-014

 (3)  
Install the protractors and adapters on the control column and the elevator torque tube crank (Fig. 402).

 NOTE: Do not install the protractor for the elevator torque tube
____
 crank on the captain's control column.

 S 824-015
 (4)  
Set the control column 8 degrees 17 minutes |1.0 degree forward of the vertical.

 S 824-016

 (5)  
Set the elevator torque tube crank 15 degrees 30 minutes |1.0 degree aft of the vertical.

 S 834-017

 (6)  
Install the rig pin E-1 .

 S 434-018

 (7)  
Engage the face splines on the control column with the face splines on the torque tube (Fig. 401).
　
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