Replacement of the Deoiler Drive Oil Seal [PW11]

TASK 72-61-01-960-802-A
Replacement of the Deoiler Drive Oil Seal

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: BE CAREFUL WHEN YOU HANDLE THE OIL SEAL. DO NOT CAUSE SCRATCHES OR DAMAGE TO THE CARBON SEALING SURFACE DURING HANDLING OR INSTALLATION. IF THE CARBON SEALING SURFACE IS DAMAGED, IT WILL BE NECESSARY TO REPLACE THE SEAL ASSEMBLY.

CAUTION: YOU MUST NOT LET ENGINE FUEL OR OIL FALL ON THE ENGINE. UNWANTED FUEL OR OIL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT-FREE CLOTH. THE FUEL OR OIL CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

ZONE: 210
ZONE: 400

1. Reason for the Job
Use this procedure to replace the deoiler drive oil seal.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	CONTAINER 20L (5 USGAL)
No specific	Torque wrench: range to between 95 and 78 lbf.in (1.07 and 0.88 m.daN )
PWA211134	1	SEAL EXTRACTOR
PWA211774	1	PULLER, MECHANICAL
PWA211779	1	TESTER, GAGE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P03-001)	lubricant, aircraft turbine engine
(Material No.P05-005)	wipe, lint-free
(Material No.P06-054)	compound, paste, anti-seize

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
15	PACKING	EIPC 72-61-01-02-110
26	PACKING	EIPC 72-61-01-02-122
4	PACKING	EIPC 72-61-01-02-130

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-720-811-A	Test No. 3A - Idle Power Test
TASK 71-00-00-860-833-A	Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
TASK 79-23-49-000-802-A	Removal of the Gearbox Breather Tube
TASK 79-23-49-400-802-A	Installation of the Gearbox Breather Tube
Main Gearbox-Deoiler Drive Oil Seal

3. Job Set-up
Subtask 72-61-01-941-054-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).

Subtask 72-61-01-010-060-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.

Subtask 72-61-01-040-054-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Ground Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 72-61-01-010-061-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.

4. Procedure

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

Subtask 72-61-01-010-062-A ** ON A/C NOT FOR ALL

A. Remove the gearbox breather tube (Ref. AMM TASK 79-23-49-000-802).

Subtask 72-61-01-350-051-A ** ON A/C NOT FOR ALL

B. Replacement of the Deoiler Drive Oil-Seal

Main Gearbox-Deoiler Drive Oil Seal ** ON A/C NOT FOR ALL

(1) Remove the overboard breather (3) as follows:
(a) Put a CONTAINER 20L (5 USGAL) below the deoiler pad.
(b) Remove the three bolts (1) and washers (2) from the overboard breather (3).
(c) Remove the overboard breather (3) from the deoiler pad.
(d) Remove and discard the packing (4) from the overboard breather (3).
(2) Remove the deoiler oil seal (14) as follows:

Main Gearbox-Deoiler Drive Oil Seal ** ON A/C NOT FOR ALL

(a) Install the PWA211134 SEAL EXTRACTOR on the oil seal (14).
(b) Use the PWA211134 SEAL EXTRACTOR to remove the oil seal (14) from the gearbox.
(c) Remove the oil seal (14) from the PWA211134 SEAL EXTRACTOR.
(d) Remove and discard the packing (15) from the oil seal (14).
(3) Remove the mating ring (25) from the deoiler gearshaft as follows:

Main Gearbox-Deoiler Drive Oil Seal ** ON A/C NOT FOR ALL

(a) Prepare the PWA211774 PULLER, MECHANICAL as follows:
1 Make sure that the fingers of the bush are open. If not, fully turn the outer sleeve counterclockwise.
2 Fully turn the shaft clockwise to lower the centering.
(b) Put the centering in position onto the deoiler gearshaft.
(c) Make sure that the PWA211774 PULLER, MECHANICAL aligns with the deoiler gearshaft.
(d) Turn the shaft counterclockwise until the protector touches the mating ring (25).
(e) Turn the outer sleeve clockwise until the fingers engage the mating ring (25).
(f) Hold the handle and turn the shaft clockwise until you remove the mating ring (25).
(g) Fully turn the outer sleeve counterclockwise to disengage the mating ring (25).
(h) Remove the mating ring (25).
(i) Remove the packing (26) from the mating ring (25) and discard it.
(4) Install the mating ring (25) on the deoiler gearshaft as follows:

Main Gearbox-Deoiler Drive Oil Seal ** ON A/C NOT FOR ALL

(a) Apply P03-001lubricant, aircraft turbine engine on a new EIPC 72-61-01-02-122 PACKING (26).
(b) Install the packing (26) on the mating ring (25).
(c) Make sure that the packing (26) is correctly installed into its groove.
(d) Prepare the PWA211774 PULLER, MECHANICAL as follows:
1 Make sure that the fingers of the bush are open. If not, fully turn the outer sleeve counterclockwise.
2 Fully turn the shaft counterclockwise to lift the centering.
(e) Install the mating ring (25) on the deoiler gearshaft as follows:
1 Install the mating ring (25) on the PWA211774 PULLER, MECHANICAL.

NOTE: The four antirotation tabs of the mating ring must point to the deoiler gearshaft.

2 Turn the outer sleeve clockwise until the fingers engage the mating ring (25).
(f) Align the PWA211774 PULLER, MECHANICAL with the deoiler gearshaft.
(g) Put the mating ring (25) on the deoiler gearshaft and push until it stops.

NOTE: If the mating ring (25) is correctly installed, the deoiler gearshaft turns together with the PWA211774 PULLER, MECHANICAL.

(h) Make sure that the four antirotation tabs of the mating ring (25) engage with the slots on the bearing.
(i) Fully turn the outer sleeve counterclockwise to disengage the mating ring (25).
(j) Remove the PWA211774 PULLER, MECHANICAL.
(5) Make sure that the mating ring (25) is correctly installed as follows:

Main Gearbox-Deoiler Drive Oil Seal ** ON A/C NOT FOR ALL

(a) Put the PWA211779 TESTER, GAGE in position on the deoiler gearshaft.
(b) Push until the PWA211779 TESTER, GAGE stops and hold it in position.
(c) Look at the pin.
1 If you cannot see the red band of the pin, the mating ring (25) is correctly installed.
2 Go to step 4.B.(6).
3 If you can see the red band of the pin, the mating ring (25) is not correctly installed.
4 Remove the mating ring (25). Refer to step 4.B.(3).
5 Do step 4.B.(4) thru step 4.B.(5) again.
(6) Install the deoiler oil seal (14) as follows:

Main Gearbox-Deoiler Drive Oil Seal ** ON A/C NOT FOR ALL

(a) Examine the inside of the mount pad and wipe it clean with a P05-005wipe, lint-free.
(b) Apply P03-001lubricant, aircraft turbine engine on a new EIPC 72-61-01-02-110 PACKING (15).
(c) Install the packing (15) in the groove on the oil seal (14).
(d) Apply P03-001lubricant, aircraft turbine engine on the face of the oil seal (14).
(e) Install the oil seal (14) equally and in small increments on the mount pad of the main gearbox.
1 Make sure that the oil seal (14) is fully engaged in the main gearbox.
(7) Install the overboard breather (3) as follows:

Main Gearbox-Deoiler Drive Oil Seal ** ON A/C NOT FOR ALL

(a) Apply P03-001lubricant, aircraft turbine engine on a new EIPC 72-61-01-02-130 PACKING (4).
(b) Install the packing (4) on the overboard breather (3).
(c) Apply P06-054compound, paste, anti-seize on the threads of the three bolts (1).
(d) Attach the overboard breather (3) on the deoiler drive pad with the three bolts (1) and washers (2).
(e) Make sure that the locking torque of the bolts (1) is between 4 lbf.in (0.05 m.daN) and 33 lbf.in (0.37 m.daN).
1 If the locking torque is out of the limits, discard the bolt (1).
(f) TORQUE the bolts (1) to between 95 and 78 lbf.in (1.07 and 0.88 m.daN )

.
(8) Examine the assembly for foreign objects, damage and correct assembly.

Subtask 72-61-01-410-058-A ** ON A/C NOT FOR ALL

C. Install the gearbox breather tube (Ref. AMM TASK 79-23-49-400-802).

5. Close-up
Subtask 72-61-01-410-059-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 thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.

Subtask 72-61-01-440-053-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 72-61-01-410-060-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Remove the WARNING NOTICE(S).

Subtask 72-61-01-710-051-A ** ON A/C NOT FOR ALL

D. Test
(1) Do the Engine Test No. 3 - Idle Power Test (Ref. AMM TASK 71-00-00-720-811).

[Rev.10 from 2021] 2026.04.01 13:14:32 UTC