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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 494-003
 WARNING:_______ IT IS RECOMMENDED THAT YOU REMOVE ONLY ONE WHEEL AND TIRE
 ASSEMBLY FROM THE NOSE LANDING GEAR AT A TIME.  IF YOU REMOVE
 THE TWO WHEEL AND TIRE ASSEMBLIES AT THE SAME TIME, STRUCTURAL

 DAMAGE AND INJURY TO PERSONS CAN OCCUR IF THE AIRPLANE FALLS.
 (2)  Lift the axle with a jack until there is clearance between the tire and the ground (AMM 07-11-31/201).
 S 684-004
 WARNING: BEFORE YOU REMOVE THE WHEEL AND TIRE ASSEMBLY, YOU MUST DEFLATE
_______ THE TIRE OR EXAMINE THE WHEEL AND TIRE ASSEMBLY TO MAKE SURE THAT IT IS SAFE TO REMOVE IT WITHOUT DEFLATION. DO THE INSPECTION OF WHEEL AND TIRE ASSEMBLY OR DEFLATE THE TIRE AS GIVEN IN THE PROCEDURE THAT FOLLOWS. 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.
 (3)  Do step (a) to examine the wheel and tire assembly to see if it is safe to remove the assembly without tire deflation or do step (b) to deflate the tire.
 NOTE: If you will not install the same wheel and tire assembly,
____ deflate the tire to prevent transporting an inflate tire.
 (a)  Examine the wheel and tire assembly for the conditions that follow: 1) The tires are not worn too much (AMM 32-45-00/601,
 Inspection Check). 2) The tire does not damage. 3) The tires are cool enough to be comfortably touched with
 the bare hand.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A 737-300/400/500MAINTENANCE MANUAL
 4) There is no evidence of wheel damage, including cracked or missing tie bolts or tie nuts, or cracks in the wheel. 5) If the tire and wheel assembly does not have the conditions in the above steps, you must deflate the tire.
 (b)  Deflate the tire with the tire deflation tool.
 WARNING: MAKE SURE THAT ALL PERSONS ARE CLEAR OF THE VALVE
_______ PATH. IF THE VALVE BLOWS OFF WHILE YOU REMOVE IT, INJURY TO PERSONS CAN OCCUR.
 CAUTION:_______DO NOT USE TOO MUCH FORCE ON THE VALVE CORE. THE CORE PARTS CAN MOVE APART AND LET THE SLEEVE AND THE LOWER END OF THE POPPET STAY IN THE VALVE STEM.
 1)  If the valve core has damage and you can not remove pressure from the tire with the tire deflation tool, do the steps that follow: a) Turn the valve assembly slowly in a counterclockwise
 direction until there is air leakage through the boss. b) At the same time, push lightly on the valve assembly. c) After all the pressure in the tire has been released,
 remove the valve assembly from the tire. 2) Deflate the tire with the tire deflation tool.
 S 034-006
 (4)  
Remove the lockbolts for the axle nut.

 S 034-007

 (5)  
Remove the axle nut.

 S 034-008

 (6)  
Remove the washer, retaining ring, and grease seal for the outer bearing.

 S 494-009

 (7)  
Install the thread protector on the axle threads.

 (8)  
Put the wheel and tire assembly on the wheel change dolly.

 (9)  
Remove the wheel and tire assembly.

 (10)
 Remove the outer bearing.

 (11)
 Remove the inner bearing.

 S 024-010
 S 024-011
 S 034-012
 S 034-013
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 034-014
 (12) Remove the grease seal, retaining ring, and spacer for the inner bearing.
 TASK 32-45-21-424-015
 3. Wheel Installation
__________________
 A. Special Tools and Equipment
 (1)  
F80168-1 - Axle Nut Socket

 B.
Standard Tools and Equipment
　
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