W DOC AIRBUS | TSM A320F

Check IGV Assembly / IGV Actuator (8014KM), Bleed Shut Off due to high temperature

TASK 49-00-81-810-887-A
Check IGV Assembly / IGV Actuator (8014KM), Bleed Shut Off due to high temperature

1. Possible Causes
  • Bleed Shut Off due to high temperature
  • damage/leakage of the fuel supply and return lines of the IGV ACTUATOR (8014KM)
  • IGV ACTUATOR (8014KM)
  • APU [4005KM]
  • damage of the IGV ACTUATOR linkage and the IGV assembly and the IGV actuator
  • damage/contamination of the electrical connector P21 of the IGV ACTUATOR (8014KM)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 49-00-00-860-008
APU Start by External Power
AMM 49-11-11-000-004
Removal of the Power Plant (APU) (131-9(A))
AMM 49-11-11-400-004
Installation of the Power Plant (APU) (131-9(A))
AMM 49-23-51-000-004
Removal of the Inlet Guide Vane - Actuator (131-9(A))
AMM 49-23-51-400-004
Installation of the Inlet Guide Vane - Actuator (131-9(A))
ASM 496104
AMM 49-61-34-000-003
Removal of the Electronic Control Box (ECB) (131-9(A))
AMM 49-61-34-400-003
Installation of the Electronic Control Box (ECB) (131-9(A))
3. Fault Confirmation
Subtask 49-00-81-710-224-B ** ON A/C NOT FOR ALL
A. Read-out of ECB Trouble-Shooting Data
   (1) Put the APU MASTER SW to the ON position.
   (2) Get access to the LAST LEG report.
   (3) Push the '>' adjacent to LRU DATA:
  • the MCDU menu shows
    Bleed Shut Off due to high temperature

   (4) Start the APU and apply Bleed Air for 20 seconds, minimum AMM 49-00-00-860-008.
4. Fault Isolation
Subtask 49-00-81-810-152-B ** ON A/C NOT FOR ALL
A. If the LAST LEG report gives the maintenance message:

CHECK IGV ASSEMBLY/IGV ACTUATOR (8014KM)

associated with Fault Code Number (FCN) 90

  • do a check for damage/leakage of the fuel supply and return lines of the IGV ACTUATOR (8014KM).
   (1) If there is damage/leakage in the fuel supply and return lines:
  • do a repair
   (2) If the fuel supply and return lines are OK:
  • remove the IGV ACTUATOR (8014KM) from the APU [4005KM] AMM 49-23-51-000-004.
  • do a check for damage of the IGV ACTUATOR linkage and the IGV assembly and the IGV actuator .
  • . make sure that the IGV has a travel range of 1 -0.01 in. or +0.01 in. (25.400 -0.254 mm or +0.254 mm).
  • . measure the force of the IGV movement.
     (a) If a force less than 20 lbf (8.8964 daN) is necessary to move the IGVs:
     (b) If a force more than 20 lbf (8.8964 daN) is necessary to move the IGVs or the travel range is different than 1 -0.01 in. or +0.01 in. (25.400 -0.254 mm or +0.254 mm), the IGV ACTUATOR linkage/IGV assembly are damaged and/or do not move freely:
Subtask 49-00-81-810-190-B ** ON A/C NOT FOR ALL
B. If the LAST LEG report gives the maintenance message:

CHECK IGV ASSEMBLY/IGV ACTUATOR (8014KM)

associated with Fault Code Number (FCN) 83

  • do a check for damage/leakage of the fuel supply and return lines of the IGV ACTUATOR (8014KM).
   (1) If there is damage/leakage in the fuel supply and return lines:
  • do a repair
   (2) If the fuel supply and return lines are OK:
  • remove the IGV ACTUATOR (8014KM) from the APU [4005KM] AMM 49-23-51-000-004.
  • do a check for damage of the IGV ACTUATOR linkage and the IGV assembly and the IGV actuator .
  • . make sure that the IGV has a travel range of 1 -0.01 in. or +0.01 in. (25.400 -0.254 mm or +0.254 mm).
  • . measure the force of the IGV movement.
     (a) If a force less than 20 lbf (8.8964 daN) is necessary to move the IGVs, the IGV ACTUATOR linkage/IGV assembly are OK:
  • do a check for damage/contamination of the electrical connector P21 of the IGV ACTUATOR (8014KM).
       1 If the electrical connector P21 is damaged/contaminated:
  • do a repair/cleaning.
       2 If the electrical connector P21 is OK:
  • use a multimeter to do the resistance check across pin 4 and pin 10 of the IGV ACTUATOR (P21).
         a If the resistance value is < 100 kOhms:
         b If the resistance value is > 100 kOhms:
  • do a check of the aircraft wiring from the ECB (59KD) AB/G8 to the IGV ACTUATOR (8014KM) P21/4 ASM 496104.
         c If the fault continues:
     (b) If a force more than 20 lbf (8.8964 daN) is necessary to move the IGVs or the travel range is different than 1 -0.01 in. or +0.01 in. (25.400 -0.254 mm or +0.254 mm), the IGV ACTUATOR linkage/IGV assembly are damaged and/or do not move freely:
5. Close-up
Subtask 49-00-81-710-225-B ** ON A/C NOT FOR ALL
A. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:34:38 UTC
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