W DOC AIRBUS | TSM A320F

Overpressure Valve of the Engine 1 Blocked in the not Fully Open Position

TASK 36-11-00-810-811-A
Overpressure Valve of the Engine 1 Blocked in the not Fully Open Position

1. Possible Causes
  • VALVE-OVERPRESSURE, ENG 1 [5HA1]
  • BMC-1 [1HA1]
  • wiring from the BMC1 (1HA1) to the overpressure valve (5HA1)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
ASM 361101
AMM 36-11-34-000-001
Removal of the BMC
AMM 36-11-34-400-001
Installation of the BMC
AMM 36-11-53-000-001
Removal of the Overpressure Valve
AMM 36-11-53-400-001
Installation of the Overpressure Valve
AMM 36-11-53-720-001
Functional Test of the Overpressure Valves with the Bleed Test Set P/N 98D36003000000
3. Fault Confirmation
Subtask 36-11-00-720-055-A ** ON A/C NOT FOR ALL
A. Test
   (1) Do the functional test of the engine 1 overpressure valve (5HA1) AMM 36-11-53-720-001.
4. Fault Isolation
Subtask 36-11-00-810-052-A ** ON A/C NOT FOR ALL
A. If the functional test of the engine 1 overpressure valve (5HA1) is not correct:
   (1) If the fault continues:
   (2) If the fault continues:
  • do a check and repair the wiring from the BMC1 (1HA1) to the overpressure valve (5HA1), pin AA/10A to pin A/1 ASM 361101.
Subtask 36-11-00-810-052-B ** ON A/C NOT FOR ALL
A. If the functional test of the engine 1 overpressure valve (5HA1) is not correct:
   (1) If the fault continues:
   (2) If the fault continues:
  • do a check and repair the wiring from the BMC1 (1HA1) to the overpressure valve (5HA1), pin AA/10A to pin A/1 ASM 361101.
Subtask 36-11-00-710-055-A ** ON A/C NOT FOR ALL
B. After the subsequent flight, make sure that the fault does not continue.
[Rev.8 from Aug 2018] 2026.04.04 04:33:41 UTC
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