IDG Servicing - Filling of the IDG with Oil or Addition of Oil after a Level Check Check of the Oil Level and Oil-Filter Differential-Pressure Indicator (DPI) Visual Inspection of the IDG for Oil Leaks and Check of the Electrical Circuits Operational Test of the IDG Disconnect and Reconnect (Reset) Function - Engine in Operation Removal of the Integrated Drive Generator -IDG 1(2),(4000XU) Installation of the Integrated Drive Generator -IDG 1(2),(4000XU) Removal of the GCU-1(2) (1XU1, 1XU2) Installation of the GCU-1(2) (1XU1, 1XU2) Operational Check of GAPCU via CFDS Energize the Aircraft Electrical Circuits from the External Power De-energize the Aircraft Electrical Circuits Supplied from the External Power EIS Start Procedure EIS Stop Procedure Engine Automatic Start Engine Shutdown
R NOTE : As the GEN 2 was set to OFF because of a true failure, the fault
____ R confirmation is not necessary.
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R 4. Fault Isolation
_______________
R A. If the fault symptom is identified by the CFDS message IDG2 (E2-4000XU) R LOW OIL PRESSURE and the upper ECAM-DU warning IDG 2 OIL LO PR:
R NOTE : This CFDS message can come into view with other CFDS messages. Do
____ R the trouble shooting for all CFDS messages related to the IDG 2.
R - do a check of the Differential Pressure Indicator (DPI) of the IDG 2
R (Ref. AMM TASK 24-21-00-210-046).
R (1) If the DPI is extended:
R - replace the engine 2 IDG (4000XU) (Ref. AMM TASK 24-21-51-000-040)
R and (Ref. AMM TASK 24-21-51-400-040).
R (2) If the DPI is not extended:
R - do a check of the IDG 2 oil level (Ref. AMM TASK 24-21-00-210-046).
R (a) If the oil level is not correct:
R - do a visual inspection of the IDG 2, the external oil-circuit
R tubing and the fuel/oil heat exchanger for oil leaks (Ref. AMM
R TASK 24-21-00-210-047).
R 1_ If you find leaks:
R - repair or replace the components as necessary to remove the
R oil leaks.
R 2_ If you find no leaks:
R - add oil (Ref. AMM TASK 12-13-24-612-041)
R - connect the IDG 2 (if disconnected)
R - do a dynamic disconnect test of the IDG 2 (Ref. AMM TASK 24-R 21-00-720-041).
R a_ If the oil pressure is correct:
R - stop the trouble shooting.
R (3) If the fault continues:
R - do the BITE test of the GAPCU (Ref. AMM TASK 24-41-00-740-002).
R (a) If the BITE test gives the message TEST FAILED:
R - push the line key adjacent to the TEST FAILED message.
R 1_ If the maintenance message GCU2 (1XU2) comes into view:
R - replace the GCU-2 (1XU2) (Ref. AMM TASK 24-22-34-000-001)
R and (Ref. AMM TASK 24-22-34-400-001).
R (b) If the BITE test gives the message TEST PASSED:
R - do a check of the low-oil pressure wiring for a short to ground
R between pin C/A of the IDG 2 and pin A/4A of the GCU 2 (Ref.
R ASM 24-21/01).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 401-499, ∞∞24-20-00∞∞∞∞∞∞∞∞∞∞Page B254
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R 1_ If the wiring is not correct:
R - repair or replace as necessary.
R 2_ If the wiring is correct:
R - replace the engine 2 IDG (4000XU) (Ref. AMM TASK 24-21-51-R 000-040) and (Ref. AMM TASK 24-21-51-400-040).
R a_ If the fault continues:
R - replace the GCU-2 (1XU2) (Ref. AMM TASK 24-22-34-000-001)
R and (Ref. AMM TASK 24-22-34-400-001).
R B. Do this operational test to make sure that the system operates correctly.
R (1) Aircraft Maintenance Configuration
R (a) Energize the aircraft electrical circuits
R (Ref. AMM TASK 24-41-00-861-002).
R (b) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only)
R (Ref. AMM TASK 31-60-00-860-001).
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