Installation of the Integrated Drive Generator (IDG) Cooling Oil-out tubes and Hoses

TASK 24-21-49-400-004-A
Installation of the Integrated Drive Generator (IDG) Cooling Oil-out tubes and Hoses

FIN: 4000XU ** 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	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
No specific	Torque wrench: range to between 730 and 700 lbf.in (8.25 and 7.91 m.daN )

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 12-13-24-612-041-B	Integrated Drive Generator (IDG) Servicing - Filling of the IDG with Oil or Addition of Oil after a level Check
TASK 71-00-00-710-001-B	Dry Motoring Check
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
Tubes and Hoses - IDG Oil Cooling

3. Job Set-up
Subtask 24-21-49-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the WARNING NOTICE(S) is (are) on the panel 115VU to tell persons not to start the engine 1(2).
(2) Make sure that the WARNING NOTICE(S) is (are) on the panel 50VU to tell persons not to power supply the FADEC system.

Subtask 24-21-49-865-054-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: 4000XU (IDG) FOR FIN: 1000EM1 (ENGINE1)
122VU	ELEC/GCU/1	2XU1	T26
122VU	ELEC/IDG1/DISC	1XT	T24
FOR FIN: 4000XU (IDG) FOR FIN: 1000EM2 (ENGINE2)
122VU	ELEC/GCU/2	2XU2	T27
122VU	ELEC/IDG2/DISC	2XT	T25

Subtask 24-21-49-010-053-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).
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 24-21-49-420-053-A ** ON A/C NOT FOR ALL

A. Installation of the Upper Oil-out Tube-Assembly

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

(1) Remove the COVER - PROTECTION from the hoses, the tubes and the fittings of the IDG and the IDG oil cooler.
(2) Connect the upper oil-out tube (5) of the IDG to the fitting on the oil-in port of the IDG oil cooler.
(3) TORQUE the coupling nut on the upper oil-out tube (5) to between 730 and 700 lbf.in (8.25 and 7.91 m.daN )

. When you do this, use a second wrench to hold the fitting on the oil-in port of the IDG oil cooler.
(4) Put the clampshell (20) on the upper oil-out tube (5) and attach it to the channel with the screws (15).
(5) TORQUE the screws (15) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

Subtask 24-21-49-420-054-A ** ON A/C NOT FOR ALL

B. Installation of the lower oil-out tube assembly

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

(1) Loosely connect the lower oil-out tube (40) to the upper oil-out tube (5). Do not torque the tube coupling nut at this time.
(2) Put the clampshell (20) on the tube (40) and attach it to the channel with the the screw (15), washer (30), and nut (35).
(3) Put the clampshells (20) on the tube (40) and attach them to the brackets at Sta. 158 (B1) with the screws (15). (two locations).
(4) TORQUE the screw (15) and nut (35) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

.
(5) TORQUE the coupling nut on the lower oil-out tube (40) to between 730 and 700 lbf.in (8.25 and 7.91 m.daN )

NOTE: Use a second wrench to hold the fitting on the tube (5) when you torque the tube (40) copling nut.

Subtask 24-21-49-420-055-A ** ON A/C NOT FOR ALL

C. Installation of the oil-out hose assembly

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

(1) Connect the oil-out hose (50) to the lower oil-out tube (40).
(2) TORQUE the coupling nut on the oil-out hose (50) to between 730 and 700 lbf.in (8.25 and 7.91 m.daN )

NOTE: Use a second wrench to hold the fitting on the tube (40) when you torque the hose (50) coupling nut.

(3) Connect the oil-out hose (50) to the union on the IDG (60).
(4) TORQUE the coupling nut on the oil-out hose (50) to between 730 and 700 lbf.in (8.25 and 7.91 m.daN )

NOTE: Use a second wrench to hold the union on the IDG (60) when you torque the hose (50) coupling nut.

Subtask 24-21-49-612-051-A ** ON A/C NOT FOR ALL

D. Filling of the IDG with Oil
(1) Drain and fill the IDG with oil (Ref. AMM TASK 12-13-24-612-041).

Subtask 24-21-49-210-051-A ** ON A/C NOT FOR ALL

E. Visual Inspection for Oil Leaks
(1) Do a visual inspection for oil leaks at the IDG and the oil tubes.
Leak are not permitted.

Subtask 24-21-49-865-055-A ** ON A/C NOT FOR ALL

F. 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: 4000XU (IDG) FOR FIN: 1000EM1 (ENGINE1)
122VU	ELEC/GCU/1	2XU1	T26
122VU	ELEC/IDG1/DISC	1XT	T24
FOR FIN: 4000XU (IDG) FOR FIN: 1000EM2 (ENGINE2)
122VU	ELEC/GCU/2	2XU2	T27
122VU	ELEC/IDG2/DISC	2XT	T25

Subtask 24-21-49-710-051-A ** ON A/C NOT FOR ALL

G. Test for Oil Leaks
(1) Do a Dry Motoring Check (Ref. AMM TASK 71-00-00-710-001).
(2) Make sure that there are no leaks in the IDG oil system.

5. Close-up
Subtask 24-21-49-410-051-A ** ON A/C NOT FOR ALL

A. 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).

[Rev.10 from 2021] 2026.03.31 23:21:09 UTC