TASK 27-31-06-004-001
 2.  Elevator Aft Quadrant Removal (Fig. 401)_____________________________
 A.  Special Tools and Equipment
 (1)  
2ME65B80926 Holding Tool, Cable Rigging Rudder and Elevator Tension Regulator

 (2)  
G12001-50 Rig Pin Kit

 B.  
Standard Tools and Equipment

 (1)  
Cable Tensiometer - 0-300-pound range for 1/8 inch diameter cable.

 C.  
References

 (1)  
06-09-05/201, Body Section 48 Access Doors and Panels

 (2)  
24-22-00/201, Manual Control

 (3)  
IPC 27-31-06 Fig. 1

 D.  
Access

 (1)  
Location Zone 315 Area Aft of Stabilizer Box Compartment, LH 316 Area Aft of Stabilizer Box Compartment, RH

 (2)  
Access Panel
 315A Access Door

 E.  
Prepare for Removal

 (1)
Do this task: "Supply Electrical Power" (Ref 24-22-00/201).

 S 864-003

 (2)  
Set all FLT CONTROL HYD POWER TAIL switches on the P461 Pilots' Overhead Maintenance Panel to SHUTOFF.

 S 864-004

 (3)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P180 DC Power Distribution Panel
 1) 180E7 ELEV/RUD VLV SYS 2
 2) 180E22 ELEV/RUD VLV SYS 4
 3) 180H8 ELEV/RUD VLV SYS 1

 S 864-002
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 27-31-06
 ALL  ú ú 01 Page 401 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400 MAINTENANCE MANUAL
TURNBUCKLES
E2B 
E2A 
E1B 
E1A 
SEE  A  CONTROL COLUMN 
TORQUE TUBE 

RIG PIN E-1  CABLE E1B 
QUADRANT FORWARD ELEVATOR 
CABLE E1A  ON LOWER SURFACE WITH READOUT SCALE TENSION REGULATOR 
FWD 
A 
Figure 401 Elevator Loading Pin and Rigging Pin Location 

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 ALL  ú ú 01 Page 402 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 4) 180H23 ELEV/RUD VLV SYS 3
 S 014-005
 (4)  
Open the access door 315A (Ref 06-09-05/201).

 S 014-006

 (5)  
Open the ceiling panels to get access to the elevator forward quadrant and the body cable turnbuckles if it is necessary.

 NOTE: Adjust the turnbuckles only if the adjustment on the
____ turnbuckles aft of the pressure bulkhead is not sufficient.
 S 494-007
 (6)  
Install the rig pin E-1 (Fig. 401).

 F.
Remove the Elevator Aft Quadrant

 S 494-042
 (1)  
Use the holding tool to do these steps (Fig. 401):

 (a)  
Prevent the movement of the tension regulator (2).

 (b)  
Loosen the cable turnbuckles without the movement of regulator arms.

 S 034-041
 (2)
Loosen the these body cables at the aft turnbuckles (Fig. 402):

 (a)  
Release the tension equally in cables E1A and E1B.

 (b)  
Release the tension equally in cables E2A and E2B.

 S 034-043
 (3)  
Disconnect the cables from the upper aft quadrant (10) and the lower aft quadrant (9) (Fig. 402).

 (a)  
Do not let the cables become loose after you disconnect them.

 (b)  
If it is necessary, tag the cables to make the installation easier.

 (4)  
Hold the elevator aft quadrant (4).

 S 494-012
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 27-31-06
 ALL  ú ú 01 Page 403 ú Feb 10/91
　
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