DOC AIRBUS | TSM A320FHigh Pressure Valve of Engine 1 Failed in Close Position
TASK 36-11-00-810-973-A
High Pressure Valve of Engine 1 Failed in Close Position
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 36-11-00-710-434-A ** ON A/C NOT FOR ALL
Subtask 36-11-00-810-331-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:33:52 UTC
High Pressure Valve of Engine 1 Failed in Close Position
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 361101 | |
| AMM 36-11-41-000-802 | Removal of the Intermediate-Pressure Bleed Check-Valve |
| AMM 36-11-41-200-802 | Removal of Intermediate Pressure Bleed Check Valve for Detailed Inspection |
| AMM 36-11-41-400-802 | Installation of the Intermediate-Pressure Bleed Check-Valve |
| AMM 36-11-51-000-802 | Removal of the HP Bleed Valve |
| AMM 36-11-51-400-802 | Installation of the HP Bleed Valve |
| AMM 36-11-51-720-804 | Functional Test of the HP Bleed Valve with the Test Set P/N 98D36109001000 |
Subtask 36-11-00-710-434-A ** ON A/C NOT FOR ALL
A. Test
(1) Not applicable.
4. Fault Isolation(1) Not applicable.
Subtask 36-11-00-810-331-A ** ON A/C NOT FOR ALL
A. If the fault symptom is identified by the maintenance message HP BLEED-V (4000HA1):
(1) Turn the manual shaft of the HP Bleed valve to OPEN.
(2) Let the manual shaft go back to closed postion.
(a) If the valve does not go back to the closed position:
Subtask 36-11-00-710-665-A ** ON A/C NOT FOR ALL (1) Turn the manual shaft of the HP Bleed valve to OPEN.
(2) Let the manual shaft go back to closed postion.
(a) If the valve does not go back to the closed position:
- Replace the
[4000HA] AMM 36-11-51-000-802 and AMM 36-11-51-400-802.
- Do a functional test of the opening of the HP bleed valve AMM 36-11-51-720-804.
- Replace the
[4000HA] AMM 36-11-51-000-802 and AMM 36-11-51-400-802.
- Continue the trouble shooting procedure.
B. If the fault symptom is identified by maintenance message AIR ENG 1 HP VALVE FAULT and there were large bleed pressure changes during flight phase 2 (ground idle) and/or flight phase 6 (top of descent):
(1) Make sure that the IPCV is in the correct condition and not blocked in the open position AMM 36-11-41-200-802.
(a) If the IPCV is damaged:
Subtask 36-11-00-810-333-A ** ON A/C NOT FOR ALL (1) Make sure that the IPCV is in the correct condition and not blocked in the open position AMM 36-11-41-200-802.
(a) If the IPCV is damaged:
- Replace the
[7110HM] AMM 36-11-41-000-802 and AMM 36-11-41-400-802.
- Continue the trouble shooting procedure.
C. If the fault continues:
(1) Do a check of the wiring from the High Pressure Valve (4000HA1) pin A/1 and A/2 to BMC1 (1HA1) pin AB/14D and AB/12D ASM 361101.
(2) If the wiring is damaged:
(a) Repair or replace the wiring .
Subtask 36-11-00-810-370-A ** ON A/C NOT FOR ALL (1) Do a check of the wiring from the High Pressure Valve (4000HA1) pin A/1 and A/2 to BMC1 (1HA1) pin AB/14D and AB/12D ASM 361101.
(2) If the wiring is damaged:
(a) Repair or replace the wiring .
D. If the fault continues:
(1) Do a check of the wiring from the High Pressure Valve (4000HA1) pin A/1 and A/2 to BMC2 (1HA2) pin AB/15D AB/13D ASM 361101.
(2) If the wiring is damaged:
(a) Repair or replace the wiring .
Subtask 36-11-00-710-435-A ** ON A/C NOT FOR ALL (1) Do a check of the wiring from the High Pressure Valve (4000HA1) pin A/1 and A/2 to BMC2 (1HA2) pin AB/15D AB/13D ASM 361101.
(2) If the wiring is damaged:
(a) Repair or replace the wiring .
E. Test
(1) After the subsequent flight, make sure that the fault does not continue.
(1) After the subsequent flight, make sure that the fault does not continue.