- if the functional test is not OK, do the next step.
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(2) Do the operational test of the L/G safety valve (Ref. AMM TASK 32-31-00-710-008):
- if the operational test is OK, do the fault isolation procedure in Para. 4.A.(6)
- if the operational test is not OK, do the fault isolation procedure in Para. 4.A.(1).
4. Fault Isolation
_______________
A. Procedure
(1) At the SAFETY VALVE-L/G SYS ISOLATION (49GA), release the electrical connector 49GA-A. (Ref. Fig. 201/TASK 32-31-00-991-010)
(2) Do a check for 28VDC at the free end of connector 49GA-A (Ref. ASM 32-31/07):
- if 28VDC is available, do step (5)
- if 28VDC is not available, connect the connector 49GA-A and do the next step.
(3) Replace the RELAY-HYDRAULIC CONTROL (48GA).
(a) Do the part of the operational test in Para. 3.A.(2) that does a check of the operation of the MLG doors (Ref. AMM TASK 32-31-00-710-008):
NOTE : To make sure that the hydraulic control relay is operating
____ correctly it is not necessary to do the check at 260 KTS.
- if the fault continues, do the next step.
(4) Do a check and repair as necessary the aircraft wiring (Ref. ASM 32-31/07):
- if the fault continues, do the next step.
(a) Do the part of the operational test in Para. 3.A.(2) that does a check of the operation of the MLG doors (Ref. AMM TASK 32-31-00-710-008):
- if the fault continues, do the next step.
(5) Replace the SAFETY VALVE-L/G SYS ISOLATION (49GA) (Ref. AMM TASK 32-31-17-000-001) (Ref. AMM TASK 32-31-17-400-001):
- if the fault continues, do the next step.
(6) Replace the SEL VALVE-L/G (40GA) (Ref. AMM TASK 32-31-12-000-001) and (Ref. AMM TASK 32-31-12-400-001).
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L/G Solenoid Safety Valve 49GA location
Figure 201/TASK 32-31-00-991-010
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5. Close-up
________
A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
B. Put the aircraft back to its initial configuration.
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TASK 32-31-00-810-809
L/G Selector Lever Deselection.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______ START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
1. Possible Causes
_______________
- LGCIU-1 (5GA1)
- LGCIU-2 (5GA2)
- LEVER-L/G NORM CTL (6GA)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
ASM 323105S01 ASM 323106S01 AMM 32-31-00-710-002 Operational Test of the Landing Gear Doors AMM 32-31-11-000-001 Removal of the Landing Gear Normal Control lever
(6GA) AMM 32-31-11-400-001 Installation of the Landing Gear Normal Control Lever
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 起落架 LANDING GEAR 1(10)
