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

TASK 73-11-60-000-002-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 5 L (1.32 USGAL)
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 71-13-00-010-040-B	Opening of the Fan Cowl Doors
IDG Oil Cooler

3. Job Set-up
Subtask 73-11-60-941-052-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 73-11-60-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 73-11-60-865-056-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 73-11-60-010-051-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 73-11-60-020-051-A ** ON A/C NOT FOR ALL

A. Remove the IDG oil cooler.
(1) Put a CONTAINER 5 L (1.32 USGAL) under the IDG oil cooler to drain the remaining oil.
(2) Cut and remove the safety wire. Remove the drain plug (60), and let the oil drain.
(3) Remove and discard the O-ring (50) from the drain plug.
(4) Disconnect the IDG oil supply (150) and oil return tube (30) from the IDG oil cooler IN and OUT ports.
(5) Remove the 4 bolts (100) which attach the fuel supply tube (90) to the flange of the IDG oil cooler port. Remove and keep the gasket (70).
(6) Remove the 4 bolts (110) which attach the fuel return tube (80) to the flange of the IDG oil cooler port. Remove and keep the gasket (120).
(7) Remove the 2 bolts (40) and washers (45) which attach the IDG oil cooler (140) to the fan frame bracket on flange F.
(8) Remove the 2 bolts (130) , and flanged nuts (20) which attach the IDG oil cooler (140) to the fan frame bracket on flange E.
(9) Remove the oil cooler (140). Install CAP - BLANKING on all ports and openings.

[Rev.10 from 2021] 2026.04.01 05:42:55 UTC