(c)  
Tighten the nut (3) again, if you removed it.

 S 434-073
 (10)
 Tighten the bolts (10).

 S 424-101

 (11)
 Connect the bonding jumper to the vertical fin.

 (a)  
Use the milliohmmeter to make sure there is a maximum of 0.01 ohms between the rudder and the vertical fin.

 S 864-102
 (12)
 Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P7, Overhead Circuit Breaker Panel 1) 7D16, RUD TRIM CONT

 (b)  
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 4) 180H23, ELEV/RUD VLV SYS 3

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-21-03
 ALL  ú ú 02 Page 406 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 864-103
 (13)
 Find the switches for the FLT COLTROL HYD POWER on the Pilot's Overhead Maintenance Panel, P461.

 (a)  
Put the TAIL switches in the NORM position.

 F.
Rudder Hinge Movement Test

 S 094-079
 (1)  Install the rig pin in the steering metering valve for the nose landing gear (AMM 32-50-00/201).
 NOTE: Do this to make sure the nose landing gear does not turn.
____
 S 864-104
 (2)  
Supply electrical power (AMM 24-22-00/201).

 S 864-105

 (3)  
Supply hydraulic power for systems No. 1 and 2, or 3 and 4
 (AMM 29-11-00/201).

 S 714-106
 CAUTION:_______MOVE THE RUDDER PEDALS SMOOTHLY AND SLOWLY. THE MINIMUM TIME FOR A FULL CYCLE IS 8 SECONDS. IF YOU MOVE THE RUDDER PEDALS TOO FAST, THE POWER CONTROL PACKAGE CAN BE DAMAGED.
 (4)  
Move the rudder fully left, then fully right and make sure the rudder moves smoothly.

 S 864-109

 (5)
Remove hydraulic power if it is not necessary (AMM 29-11-00/201).

 S 644-110

 (6)  
Lubricate the rudder hinge(s)(AMM 12-21-17/301).

 S 084-111
 WARNING:_______MAKE SURE THE NOSE LANDING GEAR IS POINTED FORWARD. IF THE TIRES ARE NOT PARALLEL WITH THE AIRPLANE, THEY CAN TURN QUICKLY WHEN YOU REMOVE THE RIG PIN. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (7)  
Remove the rig pin from the steering metering valve for the nose landing gear (AMM 32-50-00/201).

 (8)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 (9)
Install the access panels that you removed (Ref 06-09-07/201).

 S 864-112
 S 414-113
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 03 Page 407 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TASK 27-21-03-004-085
 4.  Rudder Hinge No. 2, 3, 6, 7, or 8 Removal (Fig. 402)_________________________________________
 A. Special Tools and Equipment
 (1)  
ST2580-267 Spanner Wrench Adapter Set

 B.
References

 (1)  
06-09-07/201, Fin and Rudder Access Doors and Panels

 (2)  
24-22-00/201, Manual Control

 (3)  
IPC 27-21-01, Fig. 2

 (4)  
IPC 55-40-52, Fig. 1

 C.
Access

 (1)  
Location Zone 324 Vertical Fin, Rear Spar to Trailing Edge 325 Rudder, Lower 326 Rudder, Upper

 (2)  
Access Panel
 324CL Inspection Access Panel
 324DL Inspection Access Panel
 324EL Inspection Access Panel
 324GL Inspection Access Panel
 324HL Inspection Access Panel
 324UL Inspection Access Panel

 D.
Prepare for the Removal

 S 864-114
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 864-115

 (2)  
Find the switches for the FLT COLTROL HYD POWER on the Pilot's Overhead Maintenance Panel, P461.
　
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