757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 3(79)

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 WHEELS - INSPECTION/CHECK
_________________________
 1.  General_______
 A.  This procedure contains two tasks. The first task is an inspection of the landing gear wheels for damage with the wheels installed on the airplane. The second task is an inspection of the landing gear wheels for damage with the wheels removed from the airplane.
 B.  To prevent the failure of a wheel when the airplane is in service, discard the wheel if examination shows that it has turned on a runway without a tire for a full revolution or more.
 TASK 32-45-03-216-001
 2.  Examine the Wheels (Wheel Installed on Airplane) (Fig. 601)________________________________________________
 A.  References
 (1)  
32-00-20/201, Landing Gear Downlocks

 B.  
Access

 (1)  
Location Zones
 711 Nose Landing Gear
 731 Landing Gear Left
 741 Landing Gear Right

 C.  
Procedure

 S 496-002
 (1)  
Make sure that the landing gear downlocks are installed (Ref 32-00-20/201).

 (2)  
Make sure that chocks are installed on the wheels.

 (3)
Examine the wheels for cracks, flaked paint and corrosion.

 (4)  
Examine the main gear wheels for evidence that they have overheated.

 S 496-003
 S 216-004
 S 216-005
 

 32-45-03
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A

757
MAINTENANCE MANUAL

 S 216-006

 (5)  
If a wheel or wheels have a flat tire or the tire is not there, do the steps that follow:

 (a)  
If the tire on a wheel is flat, replace the wheel and tire assembly.

 (b)  
If there is no tire on the wheel, discard the wheel if there is evidence that the wheel has turned on the runway without the tire.

 NOTE: If an airplane is moved on a wheel without a tire, the
____ wheel is permanently damaged. Damage occurs quickly in the vertical part of the rim flange, but you cannot always see the damage. If such a wheel is used again, the wheel rim flange will usually break suddenly into small pieces. Thus, no repairs are permitted although damage is not always apparent.
 S 216-007
 (6)  Examine the hubcaps for loose retainer bolts.  Tighten or replace
 the bolts as necessary.
 S 216-008
 (7)  Examine the tiebolt installations for:
 (a)  Loose tiebolts and tiebolt nuts
 (b)  Damaged tiebolts
 (c)  Tiebolt locations that do not have tiebolts.
 S 026-009
 (8)  If you found a loose or damaged tiebolt or a tiebolt location
 without a tiebolt, remove the wheel (Ref 32-45-01/401, Main Wheel--
32-45-02/401, Nose Wheel).
 S 216-010
 (9)  If you removed the wheel, do the steps to examine the wheel with the
 wheel removed from the airplane.
 NOTE:____ Carefully examine the wheel for damage and broken parts.

 S 216-011
 (10)
 If you removed a main wheel, examine the brake for damage and broken parts.

 S 216-012

 (11)
 Do a check to make sure that the rotor drive keys are firmly attached. Tighten the nuts as necessary.

 

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A
757 MAINTENANCE MANUAL
 TASK 32-45-03-216-013
 3.  Examine the Wheels (Wheel Removed from Airplane) (Fig. 601)________________________________________________
 A. References
 (1)  
32-00-20/201, Landing Gear Downlocks

 B.
Access

 (1)  
Location Zones
 711 Nose Landing Gear
 731 Landing Gear Left
 741 Landing Gear Right

 C.
Procedure

 S 216-014
 (1) Examine the metal parts of the wheel for the types of damage
 that follow:
 breaks,
 cracks,
 nicks,
 scratches,
 scoring,
 stripped or crossed thread,
 corrosion,
 distortion,
 worn plating,
 gouging
 other damage

 S 216-015
 (2)  
Examine the seal retainers for cracks, distortion, or surface damage.

 S 216-016

 (3)  
Examine the grease seals for nicks or gouges and evidence that they have overheated.

 S 216-017

 (4)  
　
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