Failure of the Two Hydraulic Pipes (Green System) on the Same Landing Gear (Normal Brake System Inoperative)
1. Possible Causes
_______________
- SEL VALVE-BRK (23GG)
- Green system hydraulic pipes
- wiring between the BSCU (10GG) and the brake selector valve (23GG)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-42-00-870-001 Bleeding of the Normal Braking at the Brake Units AMM 32-42-36-860-001 Reactivation of the Normal-Brake Safety-Valve ASM 32-42/01
3. Fault Confirmation
__________________
A. Test
(1) Do a check for leaks or rupture on the hydraulic pipes related to the Green system on a same landing gear.
4. Fault Isolation
_______________
A. If you find leaks or rupture:
- replace the Green system hydraulic pipes
- reactivate the related brake safety valves (Ref. AMM TASK 32-42-36-860-001)
- bleed the Normal brake system at the brake unit (Ref. AMM TASK 32-42-00-870-001).
(1) If you do not find leaks or ruptures:
- check the wiring between the BSCU (10GG) and the brake selector valve (23GG) (Ref. ASM 32-42/01).
(a) if the wiring is correct
- replace the SEL VALVE-BRK (23GG).
(b) if the wiring is not correct
- repair the wiring.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page 281
Feb 01/04R
CES
TASK 32-42-00-810-851
Loss of the RLG/GND1 Signal
1. Possible Causes
_______________
- LGCIU-1 (5GA1)
- BSCU (10GG)
- PROX SNSR-R L/G EXT, SYS 1 (20GA)
- wiring from the BSCU (10GG) to the LGCIU1 (5GA1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
32-42-00-810-839 No Braking of the Wheels during the Landing Gear
Retraction
AMM 32-31-71-000-001 Removal of the LGCIU (5GA1, 5GA2)
AMM 32-31-71-400-001 Installation of the LGCIU (5GA1, 5GA2)
AMM 32-31-73-000-001 Removal of the Proximity-Sensors 9GA(8GA),
11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA), 35GA(34GA)
AMM 32-31-73-400-001 Installation of the Proximity-Sensors 9GA(8GA), 11GA(10GA), 27GA(26GA), 29GA(28GA), 15GA(14GA), 17GA(16GA), 21GA(20GA), 23GA(22GA), 33GA(32GA)...
AMM 32-42-34-000-001 Removal of the Braking/Steering Control Unit (BSCU) (10GG) AMM 32-42-34-400-001 Installation of the Braking/Steering Control Unit
(BSCU) (10GG)
AMM 32-46-00-740-001 BITE Test of the BSCU
ASM 32-42/02
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the BSCU (Ref. AMM TASK 32-46-00-740-001).
4. Fault Isolation
_______________
A. If the test gives the maintenance message CHECK LGCIU1 R SHOCK ABS SIGNAL OR L/G LEVER:
- do a check for a ground signal at pin A/12G of the BSCU (Ref. ASM 32-42/02).
(1) If there is a ground signal:
- (Ref. TASK 32-42-00-810-839).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page 282
Feb 01/04R CES
(2) If there is no ground signal:
- replace the PROX SNSR-R L/G EXT, SYS 1 (20GA) (Ref. AMM TASK 32-31-73-000-001) (Ref. AMM TASK 32-31-73-400-001).
(a) If the fault continues:
- replace the LGCIU-1 (5GA1) (Ref. AMM TASK 32-31-71-000-001) (Ref. AMM TASK 32-31-71-400-001).
(b) If the fault continues:
- replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) (Ref. AMM TASK 32-42-34-400-001).
(c) If the fault continues:
- do a check and repair the wiring from the BSCU (10GG) to the LGCIU1 (5GA1) pin A/12G to pin AB/2J (Ref. ASM 32-42/02).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 起落架 LANDING GEAR 2(4)
