A320飞机维护手册 AMM LANDING GEAR 起落架9(38)

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 - on the ground service panel of the Green hydraulic system, access
 door 197CB. 
R  **ON A/C 401-499, 
R  Subtask 32-51-15-860-051-A 
R  A. Aircraft Maintenance Configuration 
R  (1) Make sure that the Yellow hydraulic system is depressurized 
R  (Ref. TASK 29-00-00-864-001). 
R  (2) Make sure that the reservoir of the Yellow hydraulic system is 
R  depressurized (Ref. TASK 29-14-00-614-001). 
R  (3) Make sure that the nose landing-gear doors are open (Ref. TASK 32-22-
R  00-010-001). 
R  (4) Make sure that the access platform is in position in zone 123. 
R  (5) Make sure that a container is in position below the rotating joint. 
R  (6) Make sure that the safety barriers are in position. 
R  (7) Make sure that the warning notice is in position to tell persons not 
R  to operate the landing gear. 
R  (8) Make sure that the warning notices are in position to tell persons 
R  not to pressurize the Yellow hydraulic system: 
R  - on the panel 40VU in the cockpit, 
R  - on the ground service panel of the Yellow hydraulic system, access 
R  door 196BB.

 

 4. Procedure
_________
 (Ref. Fig. 401/TASK 32-51-15-991-001)
 Subtask 32-51-15-640-050

 A. Preparation for Installation
 (1)
 Clean the connection components with CLEANING AGENTS (Material No. 11-004A) and dry them with dry filtered compressed-air.

 (2)
 Apply a light coat of SPECIAL MATERIALS (Material No. 05-047) to the threads of all the nuts, screws and bolts

 (3)
 Apply a thin coat of COMMON GREASE (Material No. 04-004) or COMMON GREASE (Material No. 04-022) on the fasteners and on the shaft (15).

 NOTE : Do not mix Material No. 04-004 with Material No. 04-022. You
____ can use Material No. 04-022 as an alternative to Material No. 04-004. Clean and degrease the parts before you use Material No. 04-022.
 Subtask 32-51-15-420-051
 B. Installation of the Swivel Selector Valve
 (1)
 Put the swivel selector valve (9) in position and install the washer

 (16) and the bolt (17).

 (2)
 Install the washer (14) and the nut (13).

 (3)
 Tighten the nut (13) and safety it with a new cotter pin (12).

 (4)
 Turn the bellcrank (8) so that you can install the shouldered bush

 (6) and the bolt (7).

 (5)
 Install the nut (4) and tighten it.

 (6)
 Safety the nut (4) with the new cotter pin (3).

 (7)
 Remove the blanking plugs and connect the hydraulic couplings (1), (2), (10) and (11).

 1EFF : ALL 1 32-51-15Page 408 1 1 Aug 01/05 1 1 1CES 1

 Swivel Selector Valve
 Figure 401/TASK 32-51-15-991-001
 1EFF :  ALL  1  32-51-15 Page 409 
1  1  Aug 01/05
 1  1
 1CES  1

 

 (8)
 TORQUE the hydraulic couplings (1), (2), (10) and (11) to between

 2.42 and 3.16 m.daN (17.84 and 23.30 lbf.ft).

 (9)
 Remove the container.

 (10) Apply SEALANTS (Material No. 09-001) on the screw heads and on the nuts.
 Subtask 32-51-15-720-050
 C. Test
 (1)
 Do a functional test of the nose wheel steering (Ref. TASK 32-51-00-720-003).

 (2)
 During this functional test, make sure that there are no leaks at the swivel selector valve connections.

 5. Close-up
________ Subtask 32-51-15-410-050
 A. Close Access
 (1)
 Remove the access platform(s).

 (2)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

 (3)
 Remove the warning notice(s).

 (4)
 Close the nose landing-gear doors (Ref. TASK 32-22-00-410-001).

 1EFF : ALL 1 32-51-15Page 410 1 1 Aug 01/05 1 1 1CES 1 SENSOR - NOSE WHEEL STEERING FEEDBACK (3GC,4GC) - REMOVAL/INSTALLATION

______________________________________________________________________ R **ON A/C 001-004, 051-054,
 TASK 32-51-19-000-001 Removal of the Nose Wheel Steering Feedback Sensor (3GC, 4GC) P/N C24763000 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
 CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
　
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