B.
References
(1)
AMM 07-11-03/201, Jacking Airplane Axles
(2)
AMM 12-15-03/301, Landing Gear Tire
(3)
AMM 32-00-20/201, Landing Gear Downlocks
(4)
AMM 32-45-04/601, Tires-Inspection/Check
C.
Access
(1)
Location Zone
711 Nose Landing Gear (NLG)
D.
Procedure
S 494-002
(1) Make sure that the landing gear downlocks are installed (AMM 32-00-20/201).
S 584-003
WARNING: IT IS RECOMMENDED THAT YOU REMOVE ONLY ONE WHEEL/TIRE ASSEMBLY
_______ FROM THE NOSE GEAR AT A TIME. IF YOU REMOVE THE TWO WHEEL/TIRE ASSEMBLIES FROM THE NOSE GEAR 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 07-11-03/201).
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NOSE GEAR AXLE
WHEEL SPACER
ASSEMBLY WHEEL 1. WHEEL AND TIRE BSEE
SEE A FWD 6. TIRE A (2 LOCATIONS) 5. WASHER 4. NUT 3. LOCKBOLT 2. AXLE WASHER 6. AXLE NUT FWD
RETAINING RING (REF) (BOTH SIDES) BEARING AND SEAL
(2 LOCATIONS) BEARING (REF) (REF) (SEAL) PACKING
DOLLY CHANGE WHEEL
B
Nose Gear and Tire Installation
Figure 401
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S 864-002
WARNING:_______ BEFORE YOU REMOVE THE WHEEL AND TIRE ASSEMBLY YOU MUST DEFLATE
THE TIRE OR DO AN EXAMINATION OF THE WHEEL AND TIRE ASSEMBLY TO
MAKE SURE THAT IT IS SAFE TO REMOVE WITHOUT DEFLATION. DO THE
INSPECTION OF THE 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 inspect the wheel and tire assembly to see if it is safe to remove 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 inflated tire.
(a)
Examine the wheel and tire assembly and, if you have the conditions that follow, it is not necessary to deflate the tire: 1) The tire is not worn too much (AMM 32-45-04/601) 2) The tire does not have damage (AMM 32-45-04/601). 3) The tire is cool enough to be comfortably touched with your
bare hand. 4) There is no evidence of wheel damage, including cracked or missing tie bolts or tie nuts, or cracks in the wheel. 5) If you do not meet the conditions in the preceding steps, deflate the tire as shown in step (b).
(b)
Deflate the tire with the tire deflation tool.
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:
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.
a) Turn the valve assembly slowly in a counterclockwise direction until there is gas leakage through the boss.
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b) c) At the same time, push lightly on the valve assembly.Remove the valve assembly from the tire after all the pressure in the tire has been released.
(4) S 024-005Remove the two wheel retainer nut lockbolts (3).
(5) S 024-006Remove the axle nut (6) with the retaining nut wrench.
(6) S 024-007Remove the axle washer (2).
(7) S 024-009Put the wheel change dolly under the wheel and remove the wheel and tire assembly (1).
(8) S 494-008Install the nose landing gear axle protector.
NOTE:____ The axle protector is used to protect the axle after a wheel assembly has been removed from the axle. If you will install a wheel and tire assembly immediately, it is not necessary to use the axle protector.
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