A320飞机维护手册 AMM LANDING GEAR 起落架9(63)

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R  A. Safety Precautions 
R  (1) In the cockpit, on the center pedestal, make sure that the free-fall 
R  extension handle of the landing gear is in the normal position. 
R  (2) In the cockpit, on the panel 400VU, put the warning notice(s) in 
R  position to tell persons not to operate the landing gear control 
R  lever. 
R  (3) Put the warning notice(s) in postion to tell persons not to 
R  pressurize the Yellow hydraulic system: 
R  - on the panel 40VU, 
R  - on the ground service panel of the Yellow hydraulic system, access 
R  door 196BB. 
R  (4) In the cockpit, put the warning notice(s) in position to tell persons 
R  not to operate the nosewhell steering system: 
R  - on the brake pedals, 
R  - on the nose wheel steering handwheels (18VU, 19VU). 
R  (5) Put a container below the cylinder to collect the hydraulic fluid. 
R  (6) Put the safety barriers in position. 
R  Subtask 32-51-43-860-052-A 
R  B. Aircraft Maintenance Configuration 
R  (1) Make sure that the Yellow hydraulic system is depressurized and put 
R  it in the maintenance configuration (Ref. TASK 29-00-00-864-001). 
R  (2) Depressurize the reservoir of the Yellow hydraulic system (Ref. TASK 
R  29-14-00-614-001). 

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 4. Procedure
_________
 (Ref. Fig. 401/TASK 32-51-43-991-001)
 Subtask 32-51-43-020-050
 A. Removal of the Anti Shimmy Valve NOTE : The removal procedure is the same for the front and rear valve.
____
 (1)
 Precaution: NOTE : When you remove the rubber protective coating, use a spatula

____ to prevent damage to the surfaces of the components.

 (2)
 Disconnect the hydraulic coupling (4) and drain the hydraulic fluid.

 (3)
 Put blanking plugs on the disconnected line ends.

 (4)
 Remove the nut (3) and the lock washer (2) and discard the lock washer (2).

 (5)
 Remove the anti shimmy valve (8).

 (6)
 Remove the rings (5) and (7) and the seals (6) and discard the seals (6).

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 Nose Wheel Steering Anti Shimmy Valve Figure 401/TASK 32-51-43-991-001
 1EFF : 1 1R 1CES  ALL  1 11 1 32-51-43 Page 405 Aug 01/05

 

 TASK 32-51-43-400-001
 Installation of the Nose Wheel Steering Anti Shimmy Valve
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific warning notice(s)
 No specific Torque Wrench : range 0.00 to 1.20 m.daN

 (0.00 to 9.00 lbf.ft) No specific Torque Wrench : range 0.20 to 3.60 m.daN
 (2.00 to 26.00 lbf.ft)
 B. Expendable Parts
 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
2 lock washer 32-51-43 01 -010 5 ring 32-51-43 01 -070 6 seals 32-51-43 01 -060 7 ring 32-51-43 01 -070
 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
 Configuration before Maintenance Action 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 32-51-00-720-003 Functional Test of the Nose Wheel Steering with the
 Handwheel. 32-51-43-991-001 Fig. 401
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 3. Job Set-up__________ 
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 Subtask 32-51-43-860-051
 A. Safety Precautions
 (1) Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
 (2) Make sure that the reservoir of the Green hydraulic system is depressurized. (Ref. TASK 29-14-00-614-001).
 (3) Make sure that the warning notice(s) is (are) in position to tell persons not to pressurize the Green hydraulic system: - on the panel 40VU in the cockpit, - on the ground service panel of the Green hydraulic system, access door 197CB.
　
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