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

TASK 73-11-60-400-001-A
Installation 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	WARNING NOTICE(S)
No specific	Torque wrench: range to between 58.3 and 52.5 lbf.ft (7.90 and 7.12 m.daN )
No specific	Torque wrench: range to between 83.3 and 75 lbf.ft (11.29 and 10.17 m.daN )
No specific	Torque wrench: range to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )
No specific	Torque wrench: range to between 55 and 45 lbf.in (0.62 and 0.51 m.daN )
No specific	Torque wrench: range to between 110 and 100 lbf.in (1.24 and 1.13 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease
(Material No.CP2442)	engine oil
(Material No.CP8001)	lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)	lockwire 0.032 in. (0.8 mm) dia

C. Work Zones and Access Panels

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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
20	O-RING	AIPC 73-11-60-01-070

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-24-612-041-A	Integrated Drive Generator (IDG) Servicing - Filling of the IDG with Oil or Addition of Oil after a Level Check
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-11-51-400-040-A	Installation of the Green Engine Pump
TASK 29-13-51-400-003-A	Installation of the Yellow Engine Pump
TASK 70-21-00-918-001-A	Seals (Preformed Packings and O-rings) and Gaskets
TASK 71-00-00-710-006-A	Minimum Idle Check
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
IDG Oil Cooler Tubes Connections
IDG Oil Cooler

3. Job Set-up
Subtask 73-11-60-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 73-11-60-865-054-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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 73-11-60-010-053-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 73-11-60-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the IDG Oil Cooler

CAUTION: FOR FORWARD BRACKETS REWORKED PER SB 72-225, MAKE SURE THAT BONDED WASHERS ARE INSTALLED.

(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Make sure that all the electrical connections are clean and in the correct condition.
(3) Apply a thin layer of graphite grease (Material No.CP2101) to the threads of 4 bolts (10) and (40). Install and attach the IDG oil cooler onto the brackets with the 4 bolts. TORQUE the bolts to between 110 and 100 lbf.in (1.24 and 1.13 m.daN )

.

POST SB 72-225

(4) Make sure that 2 RTV bonded washers (50) are installed on brackets marked "SB 72-225 P/N 336-488-909-0". If not, reinstall washers per SB 72-225, detail C

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

POST SB 72-225
OR SB 73-063

(5) Apply a thin layer of graphite grease (Material No.CP2101) to the threads on 4 bolts (10) and (40). Install threaded plates (60) in rear machined bracket, detail D.

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

(6) Install and attach the IDG oil cooler onto the brackets with the 4 bolts. TORQUE the bolts to between 110 and 100 lbf.in (1.24 and 1.13 m.daN )

.

END SB 72-225
OR SB 73-063

(7) Attach the fuel supply tube to the flange of IDG oil cooler port as follows :

NOTE: Before installation, you must make sure that the gaskets are serviceable. (Ref. AMM TASK 70-21-00-918-001)

(a) Make sure that the mating surfaces are clean.
(b) If serviceable, lubricate the used gasket with engine oil (Material No.CP2442) and install it.
(c) Apply a thin layer of graphite grease (Material No.CP2101) to the threads of 4 bolts, and attach the fuel tube to the oil cooler.
(d) TORQUE the bolts to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )

(8) Attach the fuel return tube to the flange of IDG oil cooler port as follows :
(a) Make sure that the mating surfaces are clean.
(b) If serviceable, lubricate the used gasket with engine oil (Material No.CP2442) and install it.
(c) Apply a thin layer of graphite grease (Material No.CP2101) to the threads of 4 bolts, and attach the fuel tube to the oil cooler. TORQUE the bolts to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )

.
(9) Lubricate the threads of the IDG oil cooler nipples with engine oil (Material No.CP2442) and reconnect oil supply and return tubes. Tighten the coupling nuts by hand.
(a) TORQUE the coupling nut of the oil supply tube to between 58.3 and 52.5 lbf.ft (7.90 and 7.12 m.daN )

.
(b) TORQUE the coupling nut of the oil return tube to between 83.3 and 75 lbf.ft (11.29 and 10.17 m.daN )

.
(c) Lubricate a new AIPC 73-11-60-01-070 O-RING (20) with engine oil (Material No.CP2442) and install the O-ring in the seal groove of the drain plug (30).
(10) Apply a thin layer of graphite grease (Material No.CP2101) to the drain plug, and install it. TORQUE the drain plug to between 55 and 45 lbf.in (0.62 and 0.51 m.daN )

. Safety with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.

5. Close-up
Subtask 73-11-60-410-051-A ** ON A/C NOT FOR ALL

A. Install hydraulic pump on accessory gearbox (Ref. AMM TASK 29-13-51-400-003) and (Ref. AMM TASK 29-11-51-400-040).

Subtask 73-11-60-612-050-A ** ON A/C NOT FOR ALL

B. Drain and replenish the IDG with oil (Ref. AMM TASK 12-13-24-612-041).

Subtask 73-11-60-865-055-A ** ON A/C NOT FOR ALL

C. Remove the safety clip(s) and the tag(s) and close 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 73-11-60-710-050-A ** ON A/C NOT FOR ALL

D. Do a minimum idle check and a check for leaks (Ref. AMM TASK 71-00-00-710-006).

Subtask 73-11-60-410-050-A ** ON A/C NOT FOR ALL

E. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).

Subtask 73-11-60-862-050-A ** ON A/C NOT FOR ALL

F. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 02:55:50 UTC