Installation of the Fuel Pump Drive Seal Assembly and Mating Ring [IAE]

TASK 72-60-25-400-010-B
Installation of the Fuel Pump Drive Seal Assembly and Mating Ring

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: BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES. IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER. IF NECESSARY, GET MEDICAL HELP. AIRCRAFT FUEL IS POISONOUS.

WARNING: DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.

ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
This TASK is for V2500-A5 engines.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 95 and 85 lbf.in (1.07 and 0.96 m.daN )
IAE1F10003	1	PUSHER-INSTALLATION
IAE1F10031	1	PUSHER, INSTALLATION

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
1	SEAL ASSEMBLY	AIPC 72-60-25-80-030
2	PACKING	AIPC 72-60-25-80-040
3	PACKING	AIPC 72-60-25-80-060
4	MATING RING	AIPC 72-60-25-80-070

D. Referenced Information

REFERENCE	DESIGNATION
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 70-23-13-911-010-A	Procedures for the Installation of Preformed Packings
TASK 71-00-00-710-012-B	Test No.3 : Idle Leak Check
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)
TASK 73-12-41-400-010-B	Installation of the Low Pressure (LP)/High Pressure (HP) Fuel Pump
Fuel Pump Drive Seal Assembly and Mating Ring

3. Job Set-up
Subtask 72-60-25-860-051-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).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.

Subtask 72-60-25-010-053-A ** ON A/C NOT FOR ALL

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

Subtask 72-60-25-630-051-A ** ON A/C NOT FOR ALL

C. Remove the covers/caps/plugs from all openings.

4. Procedure
Subtask 72-60-25-420-052-A ** ON A/C NOT FOR ALL

A. Install the fuel pump Drive Seal Assembly and Mating Ring.
(1) Install the mating ring on to the fuel pump drive gear
(a) Install a new AIPC 72-60-25-80-060 PACKING (3) (Ref. AMM TASK 70-23-13-911-010) in to the internal groove of a new mating ring (4).
(b) Assemble the AIPC 72-60-25-80-070 MATING RING (4) on to the fuel pump drive gear (5).
(c) Make sure that the large contact face of the mating ring (4) points out from the gearbox.
(d) Align the lugs on the smaller diameter of the mating ring (4) with the slots on the inner race of the front roller bearing.
(e) Use the IAE1F10031 PUSHER, INSTALLATION to fully install the mating ring (4) against the inner race of the front roller bearing.
(f) Remove the IAE1F10031 PUSHER, INSTALLATION.
(2) Install the seal assembly on to the fuel pump drive gear
(a) Make sure that the carbon seal is free to move.

NOTE: The carbon seal must have free axial movement during its full travel in the seal housing.

(b) Install a new AIPC 72-60-25-80-040 PACKING (2) (Ref. AMM TASK 70-23-13-911-010) in to the groove on the new AIPC 72-60-25-80-030 SEAL ASSEMBLY (1).
(c) Remove the guide pin from the IAE1F10003 PUSHER-INSTALLATION, and install it in to one of the bolt holes in the fuel pump drive housing (6).
(d) Align one of the holes in the seal assembly (1) flange with the guide pin in the fuel pump drive housing (6).
(e) Use the IAE1F10003 PUSHER-INSTALLATION, to fully install the seal assembly (1).
(f) Remove the pusher, IAE1F10003.
(g) Remove the guide pin from the fuel pump drive housing (6) and install it on to the IAE1F10003 PUSHER-INSTALLATION.
(h) Install the three washers (8) and the three bolts (7) which attach the seal assembly (1) to the fuel pump drive housing (6).
(i) TORQUE the bolts (7) to between 95 and 85 lbf.in (1.07 and 0.96 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

5. Close-up
Subtask 72-60-25-420-053-A ** ON A/C NOT FOR ALL

A. Install the fuel pump (Ref. AMM TASK 73-12-41-400-010).

Subtask 72-60-25-410-051-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(3) Remove the WARNING NOTICE(S).

Subtask 72-60-25-790-050-A ** ON A/C NOT FOR ALL

C. Test(s)
(1) Do an idle leak check (test No. 3) (Ref. AMM TASK 71-00-00-710-012).

[Rev.10 from 2021] 2026.04.01 02:46:51 UTC