Replacement of the Fuel Pump Drive Oil Seal [PW11]

TASK 72-61-01-960-803-A
Replacement of the Fuel Pump 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.

WARNING: IF POSSIBLE, KEEP FUEL AND OIL AWAY FROM YOUR SKIN. USE PROTECTIVE CLOTHES. FUEL AND OIL CAN DRY YOUR SKIN AND CAUSE SKIN IRRITATION.

CAUTION: DO NOT LET FUEL OR OIL FALL ON THE ENGINE. YOU MUST IMMEDIATELY REMOVE UNWANTED FUEL OR OIL WITH A CLOTH. THE FUEL OR OIL CAN CAUSE DAMAGE TO SOME ENGINE PARTS.

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.

ZONE: 210
ZONE: 400

1. Reason for the Job
Use this procedure to replace the fuel pump 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)
PWA211134	1	SEAL EXTRACTOR
PWA211774	1	PULLER, MECHANICAL
PWA211778	1	TESTER, GAGE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P03-001)	lubricant, aircraft turbine engine
(Material No.P05-005)	wipe, lint-free

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
3	PACKING	EIPC 72-61-01-02-110
14	PACKING	EIPC 72-61-01-02-122

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 73-11-01-000-801-A	Removal of the Integrated Fuel Pump and Control (IFPC)
TASK 73-11-01-400-801-A	Installation of the Integrated Fuel Pump and Control (IFPC)
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
Main Gearbox-Fuel Pump Drive Oil Seal

3. Job Set-up
Subtask 72-61-01-941-055-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 72-61-01-010-063-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 72-61-01-040-055-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 72-61-01-010-064-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 72-61-01-010-065-A ** ON A/C NOT FOR ALL

A. Remove the integrated fuel pump and control (Ref. AMM TASK 73-11-01-000-801).

Subtask 72-61-01-350-052-A ** ON A/C NOT FOR ALL

B. Replacement of the Fuel-Pump Drive Oil-Seal

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

(1) Remove the fuel-pump drive oil-seal (2) as follows:
(a) Put a CONTAINER 20L (5 USGAL) under the fuel-pump drive pad.
(b) Remove the retaining ring (1) that attaches the oil seal (2) to the gearbox.
(c) Install the PWA211134 SEAL EXTRACTOR jaws on the puller groove of the oil seal (2).
(d) Use the PWA211134 SEAL EXTRACTOR to remove the oil seal (2) from the gearbox.
(e) Remove the oil seal (2) from the PWA211134 SEAL EXTRACTOR.
(f) Remove and discard the packing (3) from the oil seal (2).
(2) Remove the mating ring (13) from the fuel pump gearshaft as follows:
(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 lift the centering.
(b) Put the centering in position onto the fuel pump gearshaft.
(c) Make sure that the PWA211774 PULLER, MECHANICAL aligns with the fuel pump gearshaft.
(d) Turn the shaft counterclockwise until the protector touches the mating ring (13).
(e) Turn the outer sleeve clockwise until the fingers engage the mating ring (13).
(f) Hold the handle and turn the shaft clockwise until you remove the mating ring (13).
(g) Fully turn the outer sleeve counterclockwise to disengage the mating ring (13).
(h) Remove the mating ring (13).
(i) Remove and discard the packing (14) from the mating ring (13).
(3) Install the mating ring (13) on the fuel pump gearshaft as follows:
(a) Apply P03-001lubricant, aircraft turbine engine on a new EIPC 72-61-01-02-122 PACKING (14).
(b) Install the packing (14) on the mating ring (13).
(c) Make sure that the packing (14) 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 (13) on the fuel pump gearshaft as follows:
1 Install the mating ring (13) on the PWA211774 PULLER, MECHANICAL.

NOTE: The four anti-rotation tabs of the mating ring must point towards the fuel pump gearshaft.

2 Turn the outer sleeve clockwise until the fingers engage the mating ring (13).
(f) Align the PWA211774 PULLER, MECHANICAL with the fuel pump gearshaft.
(g) Put the mating ring (13) on the fuel pump gearshaft and push until it stops.

NOTE: If the mating ring (13) is correctly installed, the fuel pump gearshaft turns together with the PWA211774 PULLER, MECHANICAL.

(h) Make sure that the mating ring (13) four anti-rotation tabs engage the slots on the bearing. To do this, turn the PWA211774 PULLER, MECHANICAL with the handle.
(i) Fully turn the outer sleeve counterclockwise to disengage the mating ring (13).
(j) Remove the PWA211774 PULLER, MECHANICAL.
(4) Make sure that the mating ring (13) is correctly installed as follows:
(a) Put the PWA211778 TESTER, GAGE in position on the fuel pump gearshaft.
(b) Push until the PWA211778 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 (13) is correctly installed.
2 Go to step 4.B.(5).
3 If you can see the red band of the pin, the mating ring (13) is not correctly installed.
4 Remove the mating ring. Refer to step 4.B.(2).
5 Do step 4.B.(3) thru step 4.B.(4) again.
(5) Install the fuel pump oil seal (2) as follows:
(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 (3).
(c) Install the packing (3) in the groove on the oil seal (2).
(d) Apply P03-001lubricant, aircraft turbine engine on the face of the oil seal (2).
(e) Install the oil seal (2) equally and in small increments on the drive pad of the main gearbox.
1 Make sure that the oil seal (2) is fully engaged and the retaining ring groove is not blocked.
(f) Install the retaining ring (1) in the groove of the gearbox pad to retain the oil seal (2) in position.

Subtask 72-61-01-410-061-A ** ON A/C NOT FOR ALL

C. Install the integrated fuel pump and control (Ref. AMM TASK 73-11-01-400-801).

5. Close-up
Subtask 72-61-01-410-062-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 72-61-01-440-054-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 72-61-01-410-063-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 72-61-01-710-052-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 02:50:10 UTC