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DIAMETER  MITTED PER-DIM. WEAR 6  MAX ANCE CLEAR-DIAM 
MIN  MAX 
11  BUSHING  ID  0.7500  0.7515  0.7690  0.020  X 
BOLT  OD  0.7480  0.7490  0.7295  X 
12  BEARING  ID  0.7495  0.7500  0.7690  or 0.020 3  X 
BOLT  OD  0.7485  0.7490  0.7295  X 
13  BUSHING  ID  0.7500  0.7515  0.7690  0.020  X 
BOLT  OD  0.7485  0.7490  0.7300  X 
14  BUSHING  ID  1.1250  1.1265  1.1335  0.010  4 
BUSHING  OD  1.1225  1.1235  1.1150  X 
15  BUSHING  ID  0.7510  0.7525  X 
BOLT  OD  0.7485  0.7490  0.7300  X 
16  BEARING  ID  0.7495  0.7500  0.7690  0.020 or 3  X 
BOLT  OD  0.7485  0.7490  0.7295  X 
17  BUSHING  ID  0.7500  0.7500  0.7690  0.020  5 
BOLT  OD  0.7485  0.7490  0.7300  X 

OBTAIN BEARING. INSTALL BEARING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0004 TO 0.0024 INCH MINIMUM FLANGE THICKNESS FOR FLANGED BUSHINGS
0.010 INCH BETWEEN BALL AND RACE
OBTAIN BUSHING. INSTALL BUSHING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0005 TO 0.0025 INCH. MAXIMUM OVERSIZE BUSHING AND HOLE IN FITTING IS 0.0625 INCH, IF REQUIRED OBTAIN BUSHING. INSTALL BUSHING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0008 TO 0.0028 INCH LIMITS SHOWN MAY BE EXCEEDED PROVIDED MAXIMUM CLEARANCE IS NOT EXCEEDED
Wing Gear Wheel Well Inboard Door Wear Limits
Figure 601 (Sheet 6)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-12-02
 ALL  ú ú 01 Page 607 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 WING GEAR WHEEL WELL DOOR STRIKE BOARD - REMOVAL/INSTALLATION
_____________________________________________________________
 1. General
_______
 A. This procedure has two tasks:
 (1)  
The removal of the strike board of the wheel well door for the wing landing gear (referred to as the strike board).

 (2)  
The installation of the strike board.

 TASK 32-12-03-004-001
 2. Wing Gear Wheel Well Door Strike Board Removal (Fig. 401)
______________________________________________
 A. References
 (1)  
09-11-00/201, Towing

 (2)  
32-00-30/201, Landing Gear Door Locks

 (3)  
IPC 32-12-03 Fig. 1

 B.
Access

 (1)  
Location Zone 731 Wing Landing Gear Door, LH, Center Section Inboard Panel 741 Wing Landing Gear Door, RH, Center Section Inboard Panel

 C.
Prepare for the Removal

 S 864-012
 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 (Ref 09-11-00/201).
 S 494-013
 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.
 (2)  Do this task: "Installation of the Door Locks on the Wing Landing Gear" (Ref 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-12-03
 ALL  ú ú 01 Page 401 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

C 
C  SEE  A  SUPPORT STRUCTURE 
KEEL BEAM 
B  HINGE FITTING 
BOLT 
STABILITY LINK 
WING GEAR WHEEL WELL INBOARD DOOR  A  STRIKE BOARD 
A 

B
WING GEAR WHEEL WELL OUTBOARD DOOR TRACK ASSEMBLY FWD OUTBD
A
Wing Gear Door Strike Board Installation
　
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