W DOC AIRBUS | TSM A320F

Failure of the HP Bleed Valve of the Engine 2 Blocked in the Closed Position

TASK 36-11-00-810-838-A
Failure of the HP Bleed Valve of the Engine 2 Blocked in the Closed Position

1. Possible Causes
  • VALVE-BLEED PRESS REG [4001HA]
  • VALVE-HP BLEED [4000HA]
  • sense line
  • XDCR-BLEED TRANSFER PRESS, ENG 2 [7HA2]
  • wiring
  • SOL-HP BLEED OVERRIDE, ENG2 [11HA2]
  • CHECK VALVE-IP BLEED [7110HM]
  • SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2]
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
CAP - BLANKING
No specific
Torque wrench: range to between 1.76 and 1.44 m.daN (12.98 and 10.62 lbf.ft ) T
 B. Referenced Information
REFERENCE
DESIGNATION
AMM 36-11-00-720-007
Functional Test of the Sense Lines Connected to the Bleed Pressure-Regulator Valve with the Bleed Test Set P/N 98D36003000000
AMM 36-11-00-720-008
Functional Test of the Sense Line Connected between the HP Bleed Valve and the Bleed-Pressure Regulator Valve with the Bleed Test Set P/N 99127B03
ASM 361102
AMM 36-11-15-000-001
Removal of the Bleed Transferred Pressure-Transducer
AMM 36-11-15-400-001
Installation of the Bleed Transferred Pressure-Transducer
AMM 36-11-41-000-040
Removal of the Intermediate Pressure (IP) Bleed Check Valve
AMM 36-11-41-200-001
Check of the IP Bleed Check Valve for Condition
AMM 36-11-41-400-040
Installation of the Intermediate Pressure (IP) Bleed Check Valve
AMM 36-11-41-400-041
Installation of the Intermediate Pressure (IP) Bleed Check Valve
AMM 36-11-49-000-029
Removal of the Pneumatic Sense Lines in the Pylon
AMM 36-11-49-000-820
Removal of the Pneumatic Sense Lines in the Pylon
AMM 36-11-49-400-029
Installation of the Pneumatic Sense Lines in the Pylon
AMM 36-11-49-400-820
Installation of the Pneumatic Sense Lines in the Pylon
AMM 36-11-51-000-040
Removal of the High Pressure Bleed Valve
AMM 36-11-51-000-042
Removal of the High Pressure Bleed Valve
AMM 36-11-51-400-040
Installation of the High Pressure Bleed Valve
AMM 36-11-51-400-042
Installation of the High Pressure Bleed Valve
AMM 36-11-51-720-001
Functional Test of the HP Bleed Valve with the Bleed Test Set P/N 98D36003000000
AMM 36-11-52-000-040
Removal of the Bleed Pressure-Regulator Valve
AMM 36-11-52-000-042
Removal of the Bleed Pressure Regulator Valve
AMM 36-11-52-400-040
Installation of the Bleed Pressure-Regulator Valve
AMM 36-11-52-400-042
Installation of the Bleed Pressure Regulator Valve
AMM 36-11-52-720-001
Functional Test of the Opening of the Bleed-Pressure Regulator Valve (PRV) with the Bleed Test Set P/N 98D36003000000
AMM 36-11-55-000-001
Removal of the Bleed-Pressure-Regulator Valve Control-Solenoid
AMM 36-11-55-400-001
Installation of the Bleed-Pressure-Regulator Valve Control-Solenoid
AMM 36-11-55-720-001
Functional Test of the Bleed-Pressure-Regulator Valve Control-Solenoid
AMM 36-11-58-000-001
Removal of the HP Bleed Override Solenoid
AMM 36-11-58-400-001
Installation of the HP Bleed Override Solenoid
AMM 71-00-00-710-003
Engine Automatic Start
3. Fault Confirmation
Subtask 36-11-00-710-124-A ** ON A/C NOT FOR ALL
A. Test
   (1) Not Applicable
4. Fault Isolation
NOTE: For the test of the engine bleed-air system, Airbus recommends to use bleed test set P/N 98L36103002000 for more accuracy.
Subtask 36-11-00-810-088-G ** ON A/C NOT FOR ALL
A. If the fault symptom is identified by the maintenance message
HP BLEED-V 4000HA2 OR SENSE LINE:
  • Do a check of the unions of the sense line at the VALVE-BLEED PRESS REG [4001HA] and at the VALVE-HP BLEED [4000HA] .
   (1) If the unions are loose:
  • TORQUE to between 1.76 and 1.44 m.daN (12.98 and 10.62 lbf.ft ) T.
   (2) If the unions are correctly tightened:
     (a) Do the leak test of the sense line between the VALVE-BLEED PRESS REG [4001HA] and the VALVE-HP BLEED [4000HA] AMM 36-11-00-720-008.
       1 If there are leaks:
  • Repair or replace the sense line between the HP bleed valve (4000HA2) and the Pressure Regulating Valve (4001HA2) AMM 36-11-49-000-820 and AMM 36-11-49-400-820.
  • TORQUE the coupling nut on the HP sense line to between 1.76 and 1.44 m.daN (12.98 and 10.62 lbf.ft ) T.
       2 If there are no leaks:
  • Continue with troubleshooting.
     (b) Make sure that the position indication of the HP bleed valve on the lower ECAM DU is correct:
       1 Operate the shaft valve manually:
         a Turn the manual shaft of the HP Bleed valve to OPEN.
         b Let the manual shaft go back to CLOSED.
     (c) If the position on the lower ECAM DU does not agree with the position indicator, or if the valve does not go back to the closed position:
     (d) If the position on the lower ECAM DU agrees with the position indicator:
       1 If the test is not OK:
       2 If the test is OK:
         a If the fault continues:
  • Do a check and repair the wiring from the HP bleed valve to the BMC2, pins A/1 and A/5 to pins AA/14A and AA/15A ASM 361102.
  • Refer to Para. 4D.
Subtask 36-11-00-710-662-D ** ON A/C NOT FOR ALL
B. If the fault symptom is identified by maintenance message AIR ENG 2 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 36-11-41-200-001.
     (a) If the IPCV is damaged:
     (b) If the IPCV is in the correct condition:
  • Continue the trouble shooting procedure.
Subtask 36-11-00-810-264-C ** ON A/C NOT FOR ALL
C. In all other conditions:
   (1) If the fault continues:
  • Do a check of the unions of the sense line from the VALVE-BLEED PRESS REG [4001HA] and the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] .
     (a) If the unions are loose:
     (b) If the unions are correct:
       1 If the bleed pressure-regulator valve does not open:
       2 If the bleed pressure-regulator valve opens:
         a Do a leak check of the sense line between the VALVE-BLEED PRESS REG [4001HA] and SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] AMM 36-11-00-720-007.
  • If the pressure decreases very slowly:
    * Replace the VALVE-BLEED PRESS REG [4001HA] AMM 36-11-52-000-042 and AMM 36-11-52-400-042.
  • If the pressure decreases to 0 bar (0.0000 psi) in less than 20 sec:
    * Do an internal leak check of the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] AMM 36-11-55-720-001.
    * Disconnect the sense line at the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] .
    * Put a CAP - BLANKING on the sense line.
    * Pressurize the sense line to 2.07 bar (30.0228 psi) then close the shutoff valve of the pressure source.
    * If the pressure decreases:
  • Repair or replace the sense line between the VALVE-BLEED PRESS REG [4001HA] and the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] AMM 36-11-49-000-820 AMM 36-11-49-400-820.
    * If the pressure stays constant:
  • Replace the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] AMM 36-11-55-000-001 and AMM 36-11-55-400-001.
Subtask 36-11-00-710-125-C ** ON A/C NOT FOR ALL
D. Test
   (1) Do the engine 2 start procedure AMM 71-00-00-710-003.
   (2) Make sure that the ECAM warning AIR ENG 2 HP VALVE FAULT is not shown on the upper ECAM DU.
Subtask 36-11-00-810-088-H ** ON A/C NOT FOR ALL
E. If the fault symptom is identified by the maintenance message
HP BLEED-V 4000HA2 OR SENSE LINE
  • Do a check of the unions of the sense line at the VALVE-BLEED PRESS REG [4001HA] and at the VALVE-HP BLEED [4000HA]
   (1) If the unions are loose:
  • TORQUE to between 1.76 and 1.44 m.daN (12.98 and 10.62 lbf.ft ) T
   (2) If the unions are correct:
     (a) Do the leak test of the sense line between the VALVE-BLEED PRESS REG [4001HA] and the VALVE-HP BLEED [4000HA] AMM 36-11-00-720-008.
       1 If there are leaks:
  • Repair or replace the sense line between the HP bleed valve (4000HA2) and the Pressure Regulating Valve (4001HA2) AMM 36-11-49-000-029 and AMM 36-11-49-400-029.
  • TORQUE the coupling nut on the HP sense line to between 1.76 and 1.44 m.daN (12.98 and 10.62 lbf.ft ) T.
       2 If there are no leaks:
  • Continue with troubleshooting.
     (b) Make sure that the position indication of the HP bleed valve on the lower ECAM DU is correct:
       1 Operate the shaft valve manually:
         a Turn the manual shaft of the HP Bleed valve to OPEN.
         b Let the manual shaft go back to CLOSED.
     (c) If the position on the lower ECAM DU does not agree with the position indicator, or if the valve does not go back to the closed position:
     (d) If the position on the lower ECAM DU agrees with the position indicator:
       1 If the test is not OK:
       2 If the test is OK:
         a If the fault continues:
         b If the fault continues:
  • Do a check and repair the wiring from the HP bleed valve to the BMC2, pins A/1 and A/5 to pins AA/14A and AA/15A ASM 361102.
  • Refer to Para. 4D.
Subtask 36-11-00-710-662-A ** ON A/C NOT FOR ALL
F. If the fault symptom is identified by maintenance message AIR ENG 2 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 36-11-41-200-001.
     (a) If the IPCV is damaged:
     (b) If the IPCV is in the correct condition:
  • Continue the trouble shooting procedure.
Subtask 36-11-00-810-264-B ** ON A/C NOT FOR ALL
G. In all other conditions:
   (1) If the fault continues:
  • Do a check of the unions of the sense line from the VALVE-BLEED PRESS REG [4001HA] and the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] .
     (a) If the unions are loose:
     (b) If the unions are correct:
       1 If the bleed pressure-regulator valve does not open:
       2 If the bleed pressure-regulator valve opens:
         a Do a leak check of the sense line between the VALVE-BLEED PRESS REG [4001HA] and SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] AMM 36-11-00-720-007.
  • If the pressure decreases very slowly:
    * Replace the VALVE-BLEED PRESS REG [4001HA] AMM 36-11-52-000-040 and AMM 36-11-52-400-040.
  • If the pressure decreases to 0 bar (0.0000 psi) in less than 20 sec:
    * Do an internal leak check of the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] AMM 36-11-55-720-001.
    * Disconnect the sense line at the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] .
    * Put a CAP - BLANKING on the sense line.
    * Pressurize the sense line to 2.07 bar (30.0228 psi) then close the shutoff valve of the pressure source.
    * If the pressure decreases:
  • Repair or replace the sense line between the VALVE-BLEED PRESS REG [4001HA] and the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] AMM 36-11-49-000-029 AMM 36-11-49-400-029.
    * If the pressure stays constant:
  • Replace the SOLENOID-BLEED PRESS REG V CTL, ENG 2 [10HA2] AMM 36-11-55-000-001 and AMM 36-11-55-400-001.
Subtask 36-11-00-710-125-A ** ON A/C NOT FOR ALL
H. Test
   (1) Do the engine 2 start procedure AMM 71-00-00-710-003.
   (2) Make sure that the ECAM warning AIR ENG 2 HP VALVE FAULT is not shown on the upper ECAM DU.
[Rev.8 from Aug 2018] 2026.04.04 04:33:44 UTC
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