Servicing of the IDG after Oil Chemical Contamination and Extension of the Oil-Filter Differential-Pressure Indicator (DPI)

TASK 24-21-00-612-044-A-01
Servicing of the IDG after Oil Chemical Contamination and Extension of the Oil-Filter Differential-Pressure Indicator (DPI)

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: WEAR GOGGLES, INSULATED GLOVES AND OTHER PROTECTIVE CLOTHES. HOT OIL CAN BURN YOUR EYES AND SKIN. IF OIL TOUCHES YOUR EYES OR SKIN, GET MEDICAL AID.

CAUTION: DO NOT OPERATE THE IDG:

IF IT CONTAINS TOO MUCH OIL
IF IT DOES NOT CONTAIN ENOUGH OIL

IF YOU DO, YOU CAN CAUSE DAMAGE TO THE IDG.

CAUTION: USE ONLY NEW CANS OF OIL WHEN YOU FILL THE IDG WITH OIL OR ADD OIL TO THE IDG. THE CONTAMINATION IN OIL THAT STAYS IN OPEN CANS CAN CAUSE FAST DETERIORATION OF THE OIL AND WILL DECREASE THE LIFE OF THE IDG.

CAUTION: DO NOT USE SOLVENTS THAT CONTAIN CHLORINE TO CLEAN THE EQUIPMENT (PUMP, HOSES, TANK AND FUNNEL) USED TO FILL THE IDG WITH OIL. CHLORINE CONTAMINATION OF THE OIL CAN CAUSE FAST DETERIORATION OF THE OIL AND WILL DECREASE THE LIFE OF THE IDG.

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	CONTAINER 10 L(2 1/2 USGAL)
No specific	AR	FILLING EQUIPMENT - TANK OIL
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 945 and 844 lbf.in (10.68 and 9.54 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03ABA1)	Synthetic base Lubricating Oil-Turbine Engine - -

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-24-612-011-A	Integrated Drive Generator (IDG) Servicing - Filling of the IDG with Oil or Addition of Oil after a Level Check
TASK 24-21-42-000-010-B	Removal of the Fuel-Cooled IDG Oil-Cooler
TASK 24-21-42-400-010-B	Installation of the Fuel-Cooled IDG Oil-Cooler
TASK 24-21-51-000-010-A	Removal of the Integrated Drive Generator -IDG 1(2)
TASK 24-21-51-400-010-B	Installation of the Integrated Drive Generator - IDG 1(2), (New EPGS)
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
Servicing of the IDG after Oil Contamination and with the DPI Out

3. Job Set-up
Subtask 24-21-00-861-057-A ** ON A/C NOT FOR ALL

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 24-21-00-941-062-A ** ON A/C NOT FOR ALL

B. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position 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) in position to tell persons not to energize the FADEC 1(2).

Subtask 24-21-00-010-068-A ** ON A/C NOT FOR ALL

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

4. Procedure
Subtask 24-21-00-020-060-A ** ON A/C NOT FOR ALL

A. Removal of the IDG and IDG Oil-Cooler Assembly
(1) Remove the IDG (Ref. AMM TASK 24-21-51-000-010).
(2) If the cause of contamination is a fuel leak of the IDG oil-cooler assembly:
(a) Remove the IDG oil-cooler assembly (Ref. AMM TASK 24-21-42-000-010).

Subtask 24-21-00-420-064-B ** ON A/C NOT FOR ALL

B. Installation of a New IDG and IDG Oil-Cooler Assembly
(1) Install a new IDG (Ref. AMM TASK 24-21-51-400-010) or (Ref. AMM TASK 24-21-51-400-010).
(2) Do not connect the oil-in tube (2) to the oil-in port (3) at this time.
(3) If the cause of contamination is a fuel leak of the IDG oil-cooler assembly:
(a) Install a new IDG oil-cooler assembly (Ref. AMM TASK 24-21-42-400-010).

Subtask 24-21-00-612-059-A ** ON A/C NOT FOR ALL

CAUTION: USE ONLY APPROVED TYPES/BRANDS OF LUBRICANTS. DO NOT MIX TYPES//BRANDS OF LUBRICANTS.

C. Flushing of the External Lines

NOTE: Approximately 1.5 USgal (5.7 l) of oil will flow into the container.

(1) Put the end of the IDG oil-in tube (2) in a CONTAINER 10 L(2 1/2 USGAL).
(2) Remove the dust cap (4) from the pressure fill half-coupling (1).
(3) Connect the pressure fill hose (5) of the FILLING EQUIPMENT - TANK OIL to the pressure fill half-coupling (1).
(4) Use a pump to fill the IDG with filtered Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) until:

the color of the oil that flows from the IDG oil-in line (2) is the same as the color of the oil that you put into the IDG,
or until you collect 3.8 l (1.0038 USgal) to 5.7 l (1.5058 USgal) of oil from the oil-in line (2).

Subtask 24-21-00-420-060-A ** ON A/C NOT FOR ALL

D. Connection of the IDG Oil-in line

CAUTION: USE TWO WRENCHES TO HOLD THE FITTINGS WHEN YOU TORQUE THE OIL-IN AND OIL-OUT LINES. IF NOT YOU CAN TRANSMIT TOO MUCH TORQUE TO THE IDG FITTINGS AND CAUSE DAMAGE TO THE IDG BOSSES.

(1) Connect the IDG oil-in line (2) to the oil-in port (3). Use two wrenches, one to hold and the other to TORQUE the IDG oil-in line (2) to between 945 and 844 lbf.in (10.68 and 9.54 m.daN )

Subtask 24-21-00-612-060-A ** ON A/C NOT FOR ALL

E. Fill the IDG with oil or add oil into IDG after a level check (Ref. AMM TASK 12-13-24-612-011).

5. Close-up
Subtask 24-21-00-410-068-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 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR,
(b) FOR [1000EM2] (ENGINE-2)
438AL 448AR.
(3) Remove the WARNING NOTICE(S).

Subtask 24-21-00-862-057-A ** ON A/C NOT FOR ALL

B. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:19:50 UTC