Installation of the IDG Fuel/Oil Heat-Exchanger

TASK 24-21-42-400-802-A
Installation of the IDG Fuel/Oil Heat-Exchanger

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 451
ZONE: 461
FIN: 5001XM1 ** ON A/C NOT FOR ALL
FIN: 5001XM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)
No specific	AR	COVER - PROTECTION
No specific	Torque wrench: range to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P06-054)	Antigalling Compound

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
451	THRUST REVERSER
461	THRUST REVERSER
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	SEAL	EIPC 24-21-06-01-090

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-24-612-803-A	Integrated Drive Generator (IDG) Servicing - Filling of the IDG with Oil or Addition of Oil after a Level Check
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 71-00-00-720-811-A	Test No. 3A - Idle Power Test
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
IDG Fuel/Oil Heat-Exchanger

3. Job Set-up
Subtask 24-21-42-860-054-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 24-21-42-010-061-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR

Subtask 24-21-42-040-054-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser System for Ground Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make sure that you did the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 24-21-42-010-062-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the left thrust-reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
(3) Make sure that the engine protection covers are installed.

CAUTION: INSTALL PROTECTION COVERS ON ALL THE OPENINGS IMMEDIATELY TO PREVENT DAMAGE TO THE ENGINE.

(a) Make sure that the COVER - PROTECTION are in position to prevent damage to the engine.

4. Procedure
Subtask 24-21-42-420-075-A ** ON A/C NOT FOR ALL

A. Installation of the IDG Fuel/Oil Heat-Exchanger

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

(1) Install the AC generator fuel/oil heat-exchanger (1) on the manifold (LU30):
(a) Apply Antigalling Compound (Material No.P06-054) to the six bolts (4).

NOTE: For new or refurbished bolts or nuts with baked-on lubricant, do not do the wet application.

(b) Inspect the current seal (2) for reusability as follows.
1 No raised material on the metal surface.
2 Rubber that is not bonded to the seal plate is not permitted.
3 Rubber that is missing is not permitted.
4 Inspect the rubber seal for separation from the seal plate.
5 Rubber that is cut or damaged is not permitted.
6 Make sure the rubber material is above the metal surface.
(c) Install the fuel/oil heat-exchanger (1) and EIPC 24-21-06-01-090 SEAL (2) on the manifold (LU30) with the six bolts (4) and the six washers (3).
(d) TORQUE the six bolts (4) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN )

in small increments and until the same torque indication holds.
(2) Examine the assembly for foreign objects, damage and correct assembly.

Subtask 24-21-42-860-055-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) Removal of the engine protection covers

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

(a) Remove all the COVER - PROTECTION.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the left thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL

Subtask 24-21-42-440-051-A ** ON A/C NOT FOR ALL

C. Reactivation of the Thrust Reverser System after Ground Maintenance
(1) Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 24-21-42-410-053-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

Subtask 24-21-42-612-050-A ** ON A/C NOT FOR ALL

E. Fill the IDG with oil and do the oil level inspection at the sight glass (Ref. AMM TASK 12-13-24-612-803).

Subtask 24-21-42-710-051-A ** ON A/C NOT FOR ALL

F. Do an Idle Power Test (Ref. AMM TASK 71-00-00-720-811).
(1) Make sure that the IDG 1 (2) operates correctly.
(a) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(b) On the ECAM control panel, push the ELEC key to get the ELEC page:

Make sure that the voltage of the IDG is 115VAC
Make sure that the frequency of the IDG is 400Hz + or - 5Hz.

5. Close-up
Subtask 24-21-42-942-053-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 05:43:16 UTC