747-400 AMM 飞机维护手册 起落架 LANDING GEAR 1(97)

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_______ RELEASE THE PRESSURE IN THE SHOCK STRUT. INTERNAL PRESSURE CAN BLOW THE VALVE FROM THE STRUT. THIS CAN CAUSE INJURY TO PERSONS.
 CAUTION:_______LET THE AIR OUT OF THE STRUT SLOWLY. IF YOU LET THE AIR OUT OF THE STRUT QUICKLY, THE FLUID WILL COME THROUGH THE AIR VALVE. IF THE FLUID GETS ON THE TIRES AND OTHER SURFACES, IT CAN CAUSE DETERIORATION.
 (b)  Slowly loosen the outer nuts on the air valves a maximum of two turns.
 NOTE: Bubbles will come out of the air valve immediately
____ after you loosen the outer nut.
 (c)  Let the inner cylinders fully compress.
 S 033-006
 (2)  Remove the flow fuse assembly from the lower outer cylinder that you will service (AMM 32-11-02/201).
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A 747-400 MAINTENANCE MANUAL
 (3)  S 843-007Drain the fluid from the shock strut into a container.
 NOTE:____ There will be approximately 21 gallons of fluid in each of the wing shock struts.
 (4)  S 433-008Install the flow fuse (AMM 32-11-02/201).
 (5)  S 863-009Do this task: "Wing Landing Gear Shock Strut Servicing" (AMM 12-15-03/301).

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A
747-400 MAINTENANCE MANUAL
 WING LANDING GEAR SHOCK STRUT - REMOVAL/INSTALLATION
____________________________________________________
 1.  General_______
 A.  This procedure contains two tasks:
 (1)
The removal of the shock strut from the wing landing gear

 (2)
The installation of the shock strut on the wing landing gear.

 B.  
The components on the wing landing gear are very heavy. To prevent damage to the landing gear, you must sufficiently hold the shock strut during the removal and installation. If it is available, you can use a transportation dolly to hold the landing gear. If not, you can use an assembly stand.

 C.  
You must remove the shock strut if it has damaged or worn cylinders. You must also remove the shock strut to remove the lower bearing for a replacement or to change the seals.

 TASK 32-11-02-004-001
 2.  Wing Landing Gear Shock Strut Removal (Fig. 401)_____________________________________
 A.  Special Tools and Equipment
 (1)
OHME65B01201-1 - Wing and Body Gear Overhead Mechanical Equipment

 (2)
12PRE65B00161-1 - Pivot Pin Thread Protector

 B.  
Standard Tools and Equipment

 (1)
Axle Jack and Adapter

 C.  
References

 (1)
AMM 09-11-00/201, Towing

 (2)
AMM 32-00-30/201, Landing Gear Door Locks

 (3)
AMM 32-11-01/401, Wing Gear

 (4)
AMM 32-11-03/401, Wing Gear Drag Brace

 (5)
AMM 32-11-23/401, Wing Gear Truck Mechanical Lock

 (6)
AMM 32-11-28/401, Wing Gear Shock Strut Outboard Door Fitting

 (7)
AIPC 32-11-11 Fig. 2

 (8)
AIPC 32-11-14 Fig. 2

 (9)
AIPC 32-11-20 Fig. 1,

 (10)
 AIPC 32-11-21 Fig. 1

 (11)
 AIPC 32-42-20 Fig. 1

 D.  
Access

 (1)  
Location Zone
 735 Wing Landing Gear, LH
 745 Wing Landing Gear, RH

 

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747-400 MAINTENANCE MANUAL
 E. Prepare for the Procedure
 S 494-039
 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
　
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