S 864-098

 (2)  
Do this task: "Removal of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

 (3)  
Remove the landing gear ground locks (AMM 09-11-00/201).

 (4)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 864-099
 S 864-051
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-45-01
 ALL  ú ú 04 Page 413 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 NOSE LANDING GEAR TIRE/WHEEL ASSEMBLY - REMOVAL/INSTALLATION
____________________________________________________________
 1.  General
_______
 A.  This procedure contains two tasks. The first task removes the tire/wheel assembly and the second task installs the tire/wheel assembly.
 B.  The tire/wheel assembly must be removed when you change a tire for the inspection or the lubrication of the wheel bearings on the nose gear.
 C.  When you replace a nose wheel and tire assembly, you can replace the wheel and tire assembly on the other side. Differences in the diameter between new and worn tires can contribute to nose landing gear vibration. You can decrease this if you install tires that have equal pressures, nearly the same inflated diameters, and matching supplier part numbers.
 TASK 32-45-02-004-001
 2.  Tire/Wheel Assembly for the Nose Landing Gear - 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

 (5)  
4PRE65B00162 - Axle Protector, Nose Landing Gear

 (6)  
3MIT65B00162 - Lock Assembly, Nose Gear Steering

 B.  
Standard Tools and Equipment

 (1)  
Wheel Change Dolly - Commercially Available

 (2)  
Wheel Chocks - Commercially Available

 (3)  
968RB - Tire Deflation Tool or Equivalent
 SAF-COR Tools

 P.
 O. Box 382
 Fairfield, PA 16415

 C.  
References

 (1)  
AMM 07-11-03/201, Jacking Airplane Axles

 (2)  
AMM 09-11-00/201, Towing

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

 D.  
Access

 (1)  
Location Zone
 715 Nose Landing Gear

 E.  
Prepare for the Removal

 (1)  
Make sure that the wheel chocks are installed at all of the wheels.

 S 494-006

 (2)  
Make sure the ground locks are installed in all landing gear (AMM 09-11-00/201).

 S 944-101
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-45-02
 ALL  ú ú 03 Page 401 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 494-007
 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.
 (3)  
Do this task: "Installation of the Door Locks on the Nose Landing Gear" (AMM 32-00-30/201).

 S 494-009

 (4)  
Install the lock assembly for the nose gear steering (if necessary).

 S 584-010

 (5)  
Lift the airplane on jacks, by the axle, until the tire is clear of the ground (AMM 07-11-03/201).

 S 844-078
 WARNING: BEFORE YOU REMOVE THE WHEEL AND TIRE ASSEMBLY YOU MUST DEFLATE
_______ THE TIRE OR INSPECT THE WHEEL AND TIRE TO MAKE SURE THEY ARE SAFE. INSPECT THE WHEEL AND TIRE FOR THE CONDITIONS LISTED BELOW. A DEFECTIVE WHEEL AND TIRE ASSEMBLY CAN EXPLODE DURING OR AFTER REMOVAL IF YOU DO NOT DEFLATE THE TIRE. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
　
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