................................................................................ | Tire Size/Ply Rating/ | Pressure |Gravity Limits, %MAC | | ............................................... | Rated Load (lb) | Nose | Main |Fwd | Aft | ................................................................................ | H49x19-22/32PR/56,600RL *[1] | 175 | 200 |20.9 | 24.3 | 2................................….......…............….......…................1 *[1] The H49x19-22/32PR/56,600RL is the basic production tire for the nose
 and main gear. ~.............................................................................. | 747-400 | | Maximum Taxi Gross Weight 875K (lbs) | | ------------------------------------| | WHEEL INTERCHANGEABILITY SUMMARY | ................................................................................ | |Size | Wheel PN | Applicable gear | ................................................................................ |Production Wheel:|H49x19-22 | 3-1479-2 (B.F. Goodrich) | Nose and Main | ................................................................................ |Optional Wheel: |H49x19-22 | 3-1479-1 | Nose and Main | 2.................…............…............................…..................1 ~.............................................................................. | 747-400 | | Maximum Taxi Gross Weight 875K (lbs) | | ------------------------------------| | BRAKE INTERCHANGEABILITY SUMMARY | ................................................................................ | | B.F. Goodrich PN | Brake Type | ................................................................................ |Production Brake: | 2-1515-2 | Carbon Composite *[1] | | | (use only with BFG wheel) | | ................................................................................ |Optional Brake: | 2-1515-1 | Carbon Composite | 2........................…............................…........................1 *[1] Extended Disk Life (EDL)
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 32-45-00
 ALL  ú ú 04 Page 203 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 MAIN LANDING GEAR TIRE/WHEEL ASSEMBLY - REMOVAL/INSTALLATION
____________________________________________________________
 1.  General_______
 A.  This procedure contains two tasks. The first task removes the main landing gear wheel and tire assembly. The other task installs the main landing gear wheel and tire assembly.
 B.  The main landing gear wheel and tire assembly will be referred to as the "wheel and tire assembly" in the subsequent tasks.
 C.  It is recommended that you install equivalent tires on the same axle. Equivalent tires will touch the ground equally and the tires will have equal loads on them.
 D.  Axles and axle nuts can be modified to be undersized. Axles and axle nuts are painted yellow to indicate that they have been modified. You cannont replace a modified axle nut with a standard axle nut.
 E.  Axle wheel sleeves can twist in service which can make wheel removal difficult. When an axle wheel sleeve is twisted, the "saw gap" edges can protrude or overlap, which can cause interference with the wheel inner bearings. Refer to AMM 32-11-32/401 (WLG) or 32-13-26/401 (BLG) for axle wheel sleeve removal procedures.
 TASK 32-45-01-004-001
 2.  Main Landing Gear Tire/Wheel Assembly - Removal (Fig. 401)_______________________________________________
 A.  Special Tools and Equipment
 (1)  
J32032-19 - Wrench Equipment (preferred)

 (2)  
MIT65B01202-1 - Wrench Adapter (Optional)

 (3)  
17PRE65B00161 - Axle Thread Protector

 NOTE: This tool is optional to G32008-1.
____
 (4)  
G32008-1 - Axle Thread Protector

 B.  
Standard Tools and Equipment

 (1)  
968RB - Tire Deflation Tool
 SAF-COR Tools

 P.
 O. Box 382
 Fairfield, PA 16415

 (2)  
Wheel Change Dolly - Commercially Available

 (3)  
Wheel Chocks - Commercially Available

 C.  
References

 (1)  
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 起落架 LANDING GEAR 7(137)