747-400 AMM 飞机维护手册 起落架 LANDING GEAR 4(2)

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MIN  MAX 
6  BUSHING  ID  0.7500  0.7515  0.7530  0.0060  X  *[3] 
BUSHING  OD  0.7480  0.7490  0.7470  X 
7  BUSHING  ID  0.5000  0.5015  0.5030  0.0055  X  *[1] 
BOLT  OD  0.4985  0.4995  0.4975  X 
8  BEARING  ID  0.4995  0.5000  0.5020  0.0055  X 
BOLT  OD  0.4985  0.4995  0.4965  X 

*[1]  INSTALL BEARING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0003 TO 0.0018 INCH. HOLE IN FITTING IS 0.767 INCHES, IF REQUIRED.  MAXIMUM OVERSIZE 
*[2]  INSTALL BEARING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0004 TO 0.0023 INCH. BUSHING AND HOLE IN FITTING IS 1.079 INCH, IF REQUIRED.  MAXIMUM OVERSIZE 
*[3]  INSTALL BUSHING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0004 TO 0.0023 INCH. BUSHING AND HOLE IN FITTING IS 0.960 INCH.  MAXIMUM OVERSIZE 
*[4]  LIMITS SHOWN MAY BE EXCEEDED PROVIDED MAXIMUM CLEARANCE IS NOT EXCEEDED. 

Nose Wheel Well Forward Door Operator Rods Wear Limits
Figure 601 (Sheet 3)

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 32-22-03
 ALL  ú ú 01 Page 604 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 NOSE WHEEL WELL AFT DOOR OPERATOR - REMOVAL/INSTALLATION
________________________________________________________
 1.  General_______
 A. This procedure has these tasks:
 (1)  
Aft Door Operator Removal

 (2)  
Aft Door Operator Installation

 TASK 32-22-04-004-001
 2.  Aft Door Operator Removal (Fig. 401)_________________________
 A. References
 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 29-11-00/201, Main Hydraulic Supply System

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

 B.
Access

 (1)  
Location Zone
 713 Nose Landing Gear Door, Aft, LH
 714 Nose Landing Gear Door, Aft, RH

 C.
Removal

 S 864-002
 (1)  Make sure the ground lockpins for the landing gear are installed (AMM 09-11-00/201).
 S 494-050
 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 Nose Landing Gear" (AMM 32-00-30/201).

 (3)
Remove power from hydraulic system No. 1 (AMM 29-11-00/201).

 S 864-004
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 ALL  ú ú 01 Page 401 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

SEE  B 
SEE  A 
FWD SEE  C  SEE  D  DRIVE CRANK TRUNNION  ROD NO. 2 LOCKNUT 

A  ATTACH BOLT 
A  FWD 
TRUNNION NOSE GEAR  A 
NOSE GEAR TRUNNION 

TRUNNION FWD DRIVE CRANK
A-ANose Wheel Well Aft Door Operator Installation Figure 401 (Sheet 1)
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 32-22-04
 ALL  ú ú 01 Page 402 ú Feb 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400 MAINTENANCE MANUAL
BOLT 2 BULKHEAD
BELLCRANK SUPPORT FITTING
ROD NO. 3 1  RIGGING PIN 
BELLCRANK 
ROD NO. 2 
B  ROD NO. 1 

ROD NO. 1 
AFT DOOR 
HINGE 
FWD 
AFT DOOR 
INBD 
1  INSTALLED ON THE LEFT BELLCRANK ONLY. 
　
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