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A
747-400 MAINTENANCE MANUAL
 WING GEAR TRUNNION FORK - REMOVAL/INSTALLATION
______________________________________________
 1.  General_______
 A.  This procedure has two tasks:
 B.  The removal of the trunnion fork for the wing landing gear (referred to as the trunnion fork).
 C.  The installation of the trunnion fork.
 TASK 32-11-19-004-001
 2.  Wing Gear Trunnion Fork Removal (Fig. 401)_______________________________
 A.  Special Tools and Equipment
 (1)  
3ME65B00161-1 - Wing Gear Trunnion Torque Wrench Spanner Adapter

 (2)  
5OHME65B00161-1 - Wing Gear Trunnion Fork Sling Assembly

 (3)  
8PRE65B00161-1 - Wing Gear Trunnion Bolt Protector

 (4)  
9PRE65B00161-1 - Wing Gear Upper Trunnion Bolt Protector

 (5)  
8ME65B00161-1 - Drag Brace Support Strap

 (6)  
PME65B00161-1 - Landing Gear Transportation and Installation Dolly or equivalent.

 NOTE: Tool G32028 supersedes 9ME65B00163 (PME65B00161-1).
____
 (7)  
ST921E - Wing Landing Gear Bearing Housing Shear Pin Puller

 (8)  
ST2580-251 - Torque Wrench Adapter

 B.  
Standard Tools and Equipment

 (1)  
Hoist - Standard floor mounted with boom adjustable between ground and 19 feet. Load at highest point - 205 pounds: maximum - 350 pounds

 (2)  
Thread Protector and Dust Cap, 3.000-12UN, Female

 (3)  
Tube Nut Plug, 3.000-12UN, Male

 C.  
References

 (1)  
AMM 07-11-01/201, Jacking Airplane

 (2)  
AMM 09-11-00/201, Towing

 (3)  
AMM 32-00-30/201, Landing Gear Door Locks

 (4)  
AMM 57-43-01/401, Wing Gear Forward Trunnion Bearing Housing

 (5)  
AIPC 32-11-03 Fig. 1

 (6)  
AIPC 32-11-19 Fig. 1

 D.  
Access

 (1)  
Location Zone
 735 Wing Landing Gear, LH
 745 Wing Landing Gear, RH

 

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-11-19
 ALL  ú ú 02 Page 401 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
7. TRUNNION FORK 1. BEARING HOUSING
24. NUT 
2. UPPER BEARING 
22. WASHER  HOUSING PIN 
23. LOCKBOLT 
3. LOWER BEARING 
HOUSING PIN 
21. LOCKBOLT 

11. DRAG BRACE BOLT
20. NUT 12. LUBRICATION19. WASHER INSERT
13. O-RINGS
18. TRUNNION
SEE A  16. O-RINGS
17. DRAG BRACE
15. LUBRICATION INSERT
14. TRUNNION FORK BOLT
AIRPLANE STRUCTURE8A. SHIM
1.  BEARING HOUSING
4A. LOCKBOLT
RADIUS FILLER
8.
SHIM (2 LOCATIONS)

9.  
LOCKBOLT

(2 LOCATIONS)  2. UPPER BEARING HOUSING PIN
TRUNNION FORK BEARING
10. HOLE
4.  
LOCKBOLT

5.  
BEARING OUTER RACE

6.  
BEARING RETAINING NUT

3.  LOWER BEARING
HOUSING PIN AIRPLANE
7.  TRUNNION FORK A STRUCTURE
Trunnion Fork Installation for the Wing Landing GearFigure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-11-19
 ALL  ú ú 01 Page 402 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 E. Prepare for the Removal
 S 864-061
 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1) Install the ground locks in all landing gear (AMM 09-11-00/201).
 S 494-062
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
　
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