Failure of the Heat Management System with Operation of the Mode 5 on Engine 2

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1. Possible Causes
· VALVE-FUEL DIVERTER AND RETURN ( 4018KS )
· VALVE-PRESSURE HOLDING, R WING TANK ( 125QM )
· fuel-cooled IDG oil-cooler
· SENSOR-LOW LEVEL, RIGHT WING TK INNER CHANNEL A ( 38QJ2 )
· SENSOR-TEMP, RIGHT WING TK INNER CHANNEL A ( 29QJ2 )
· SENSOR-TEMP, RIGHT WING TK OUTER CHANNEL A ( 30QJ2 )
· SENSOR-HIGH LVL, RIGHT WING SURGE TK CHANNEL A ( 28QJ2 )
· PRESS SW-FUEL PUMP NO 1, L WING TK ( 23QA )
· PRESS SW-FUEL PUMP NO 1, R WING TK ( 24QA )
· PRESS SW-FUEL PUMP NO 2, L WING TK ( 27QA )
· PRESS SW-FUEL PUMP NO 2, R WING TK ( 28QA )
· EEC ( 4000KS )
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 24-21-42-000-010 Removal of the Fuel-Cooled IDG Oil-Cooler
Ref. AMM 24-21-42-400-010 Installation of the Fuel-Cooled IDG Oil-Cooler
Ref. AMM 28-16-41-000-001 Removal of the Pressure-Holding Valve
Ref. AMM 28-16-41-400-001 Installation of the Pressure-Holding Valve
Ref. AMM 28-21-15-000-003 Removal of the Fuel-Pump Pressure-Switch
Ref. AMM 28-21-15-400-001 Installation of the Fuel-Pump Pressure-Switch
Ref. AMM 28-46-16-000-001 Removal of the Overflow Sensor
Ref. AMM 28-46-16-400-001 Installation of the Overflow Sensor
Ref. AMM 28-46-17-000-001 Removal of the Temperature Sensor
Ref. AMM 28-46-17-000-002 Removal of the Temperature Sensor
Ref. AMM 28-46-17-400-001 Installation of the Temperature Sensor
Ref. AMM 28-46-17-400-002 Installation of the Temperature Sensor
Ref. AMM 28-46-19-000-001 Removal of the IDG Shut-off Sensor.
Ref. AMM 28-46-19-400-001 Installation of the IDG Shut-off Sensor.
Ref. AMM 73-13-42-000-010 Removal of the Fuel Diverter and Return Valve
Ref. AMM 73-13-42-400-010 Installation of the Fuel Diverter and Return Valve
Ref. AMM 73-13-42-720-010 Functional Test of the Fuel Recirculation Cooling System without Barfield
Tester and without AIDS
Ref. AMM 73-22-34-000-010 Removal of the Electronic Engine Control (EEC)
Ref. AMM 73-22-34-400-010 Installation of the Electronic Engine Control (EEC)
3. Fault Confirmation
Subtask 73-22-00-710-128-A
A. Test
Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
Subtask 73-22-00-810-093-A
A. If the fault symptom is identified by the CFDS message HMS-IDG OVTMP W/RECIRC2 and the ECAM
warning ENG 2 FADEC:
· Do a functional test of the FDRV Ref. AMM 73-13-42-720-010 .
(1) If the FDRV is faulty:
· Replace the VALVE-FUEL DIVERTER AND RETURN ( 4018KS ) Ref. AMM 73-13-42-000-010
and Ref. AMM 73-13-42-400-010 .
(2) If the FDRV is not faulty:
· Replace the VALVE-PRESSURE HOLDING, R WING TANK ( 125QM ) Ref.
AMM 28-16-41-000-001 and Ref. AMM 28-16-41-400-001 .
(3) If the fault continues:
· Replace the fuel-cooled IDG oil-cooler Ref. AMM 24-21-42-000-010 and Ref.
AMM 24-21-42-400-010 .
(4) If the fault continues:
· Replace the SENSOR-LOW LEVEL, RIGHT WING TK INNER CHANNEL A ( 38QJ2 ) Ref.
AMM 28-46-19-000-001 and Ref. AMM 28-46-19-400-001 .
(5) If the fault continues:
· Replace the SENSOR-TEMP, RIGHT WING TK INNER CHANNEL A ( 29QJ2 ) Ref.
AMM 28-46-17-000-001 and Ref. AMM 28-46-17-400-001 .
(6) If the fault continues:
· Replace the SENSOR-TEMP, RIGHT WING TK OUTER CHANNEL A ( 30QJ2 ) Ref.
AMM 28-46-17-000-002 and Ref. AMM 28-46-17-400-002 .
(7) If the fault continues:
· Replace the SENSOR-HIGH LVL, RIGHT WING SURGE TK CHANNEL A ( 28QJ2 ) Ref.
AMM 28-46-16-000-001 and Ref. AMM 28-46-16-400-001 .
(8) If the fault continues:
· Replace the PRESS SW-FUEL PUMP NO 1, L WING TK ( 23QA ) , PRESS SW-FUEL PUMP NO
1, R WING TK ( 24QA ) Ref. AMM 28-21-15-000-003 and Ref. AMM 28-21-15-400-001 .
(9) If the fault continues:
· Replace the PRESS SW-FUEL PUMP NO 2, L WING TK ( 27QA ) , PRESS SW-FUEL PUMP NO
2, R WING TK ( 28QA ) Ref. AMM 28-21-15-000-003 and Ref. AMM 28-21-15-400-001 .
(10) If the fault continues:
· Replace the EEC ( 4000KS ) Ref. AMM 73-22-34-000-010 and Ref. AMM 73-22-34-400-010 .
Subtask 73-22-00-710-129-A
B. After the subsequent flight, make sure that the fault does not continue. [Rev.6 from Feb 2017] 2026.04.04 04:36:18 UTC