27-21-01
 ALL  ú ú 03 Page 435 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 094-088
 WARNING:_______ MAKE SURE THE NOSE LANDING GEAR IS POINTED STRAIGHT FORWARD.
 IF IT IS NOT, IT CAN TURN QUICKLY TO THE STREIGHT POSITION WHEN
 THE RIG PIN IS REMOVED.  THIS CAN CAUSE INJURY TO PERSONS AND

 DAMAGE TO EQUIPMENT.
 (7)  
Remove the TOW PIN from the nose landing gear (Ref 09-11-00/201). S 864-089

 (8)  
Remove hydraulic power if it is not necessary (Ref 29-11-00/201). S 644-093

 (9)  
Lubricate the rudder (Ref 12-21-17/301). S 414-094

 (10)
 Install the access panels for the rudder. S 864-095

 (11)
 Remove electrical power if it is not necessary (Ref 24-22-00/201).

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 27-21-01
 ALL  ú ú 01 Page 436 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 UPPER RUDDER - INSPECTION/CHECK
_______________________________
 TASK 27-21-02-206-001
 1.  Test Upper Rudder Hinge Bearing and Rudder Power Control Package Bearing Play_____________________________________________________________________________
 A. General
 (1)  
This procedure contains one task in which it gives instructions to find the bearing wear in the power control package of the upper rudder.

 B.
Special Tools and Equipment

 (1)  
2MIT65B04011-41 Nose Gear Rig and Tow Safety Pin

 (2)  
G12001-50 Rig Pin Kit

 (3)  
G27023-1 Upper Rudder Flutter Test Fixture

 C.
Standard Tools and Equipment

 (1)  
FDV50 Force Gage, 0-50 pounds (This tool is recommended) DPPH150 Force Gage, 0-150 pounds (This tool is optional)

 D.
References

 (1)  
29-11-00/201, Main Hydraulic Supply System

 E.
Access

 (1)  
Location Zone
 326 Upper Rudder
 324 Vertical Fin

 (2)  
Access Panel
 324FR Centering Mechanism Access Panel

 F.
Prepare for Test

 S 496-002
 WARNING:_______MAKE SURE THE NOSE WHEELS ARE STRAIGHT FORWARD. IF THEY ARE NOT, THE GEAR CAN ROTATE RAPIDLY TO THE CENTER POSITION WHEN THE TOW PIN IS REMOVED. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  Install the nose gear rig and tow safety pin in the nose gear steering metering valve module.
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 27-21-02
 ALL  ú ú 01 Page 601 ú Feb 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

SEE A
RIG PIN R-4
RUDDER AFT QUADRANT
CABLE RB INPUT ROD TO THE UPPER RUDDER RATIO CHANGER
INPUT CONTROL ROD
CABLE RA
A
RUDDER TRIM ACTUATOR
CRANK ASSEMBLY
FEEL,
CENTERING AND TRIM MECHANISM
Rudder Feel, Centering and Trim Mechanism Rig Pin Installation
Figure 601

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 27-21-02
 ALL  ú ú 01 Page 602 ú Jun 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
F75904
A
747-400
MAINTENANCE MANUAL

INDICATOR
Rudder Flutter Test Fixture Installation
Figure 602

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