Removal of the Integrated Drive Generator (IDG) Oil Cooler Assembly [CFMI]

TASK 73-11-60-000-001-A
Removal of the Integrated Drive Generator (IDG) Oil Cooler Assembly

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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	AR	CAP - BLANKING
No specific	AR	CONTAINER 20L (5 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 29-11-51-000-040-A	Removal of the Green Engine Pump
TASK 29-13-51-000-003-A	Removal of the Yellow Engine Pump
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
IDG Oil Cooler Tubes Connections
IDG Oil Cooler

3. Job Set-up
Subtask 73-11-60-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 73-11-60-861-050-A ** ON A/C NOT FOR ALL

B. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 73-11-60-865-053-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
FOR FIN: 1000EM2 (ENGINE2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26

Subtask 73-11-60-010-050-A ** ON A/C NOT FOR ALL

D. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 73-11-60-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the IDG Oil Cooler
(1) Put a CONTAINER 20L (5 USGAL) under the IDG Oil Cooler to drain the remaining oil.
(2) Remove the hydraulic pump from the accessory gearbox (Ref. AMM TASK 29-11-51-000-040) and (Ref. AMM TASK 29-13-51-000-003).
(3) Remove drain plug (30), and let the oil drain.

IDG Oil Cooler ** ON A/C NOT FOR ALL

(4) Remove and discard O-ring (20) from drain plug.
(5) Disconnect the IDG oil supply and return tubes from IDG oil cooler "IN" and "OUT" ports.
(6) Remove the 4 bolts securing the fuel supply tube to the flange of IDG oil cooler port. Remove and retain gasket.
(7) Remove the 4 bolts securing the fuel return tube to the flange of IDG oil cooler port. Remove and retain gasket.
(8) Remove the 4 bolts (10) and (40) from which attach the IDG oil cooler to brackets.

POST SB 72-225
OR SB 73-063

(9) Remove the threaded plates (60) from the rear bracket, detail D.

IDG Oil Cooler Tubes Connections ** ON A/C NOT FOR ALL

END SB 72-225
OR SB 73-063

(10) Remove the oil cooler.
(11) Put the PLUG-BLANKING in each disconnected line end.
(12) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(13) Remove the container.

[Rev.10 from 2021] 2026.04.01 05:42:46 UTC