Replacement of the Fuel Filter (131-9(A))

TASK 49-32-41-920-001-A
Replacement of the Fuel Filter (131-9(A))

WARNING: DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

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

ZONE: 315

1. Reason for the Job
Refer to the MPD TASK: 493000-B1
DISCARD FUEL INLET FILTER ELEMENT
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	AR	CONTAINER 10 L(2 1/2 USGAL)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.47 and 0.43 m.daN (41.59 and 38.05 lbf.in )
98L12003001000	AR	HARNESS,SAFETY

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03ABA1)	Synthetic base Lubricating Oil-Turbine Engine - -
(Material No.03ABB1)	Synthetic base Lubricating Oil-Turbine Engine Low Temp. -
(Material No.03BEB1)	Mineral base Lubricating Oil-Turbine Engine - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
315	TAIL CONE APU AND ACCESSORY COMPARTMENT
315AL, 316AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	O-RING	AIPC 49-32-11-70-030
4	FILTER	AIPC 49-32-11-70-040
5	O-RING	AIPC 49-32-11-70-050
3	O-RING	AIPC 49-32-84-31-030
4	FILTER	AIPC 49-32-84-31-040
5	O-RING	AIPC 49-32-84-31-050

E. Referenced Information

REFERENCE	DESIGNATION
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 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-22-00-710-001-A	Operational Test of the APU Fuel-Pump System on Ground to Purge the Fuel Line
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 49-00-00-860-008-A	APU Start by External Power
TASK 49-00-00-860-008-A-01	APU Start by Batteries
TASK 49-00-00-860-009-A	APU Shutdown by External Power (131-9(A))
TASK 49-00-00-860-009-A-01	APU Shutdown by Batteries (131-9(A))
TASK 52-41-00-010-001-A	Open the APU Doors for Access
TASK 52-41-00-410-001-A	Close the APU Doors after Access
Fuel Filter

3. Job Set-up
Subtask 49-32-41-941-054-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Obey the Fuel Safety Procedures (Ref. AMM TASK 28-00-00-910-001).

Subtask 49-32-41-860-052-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On overhead panel 25VU, make sure that the APU MASTER SW pushbutton switch is released (the ON legend is off).
(3) On the APU section of overhead panel 25VU, make sure that the WARNING NOTICE(S) is in position to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).

Subtask 49-32-41-865-057-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-32-41-010-052-A ** ON A/C NOT FOR ALL

D. Get Access

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

(1) Put on and attach the HARNESS, SAFETY before you start work in the work area.
(2) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below APU access doors 315AL and 316AR.
(3) Open APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-010-001).
(4) Set the light switch 11LJ to the ON position.

4. Procedure
Subtask 49-32-41-020-052-A ** ON A/C NOT FOR ALL

A. Removal of the Filter
(1) Put the CONTAINER 10 L(2 1/2 USGAL) below the FCU (1).
(2) Loosen the nuts (6).
(3) Remove the filter housing (2) from the FCU (1).
(4) Remove and discard the filter element (4) and O-rings (3) and (5).

Subtask 49-32-41-420-052-A ** ON A/C NOT FOR ALL

B. Installation of the Filter
(1) Lubricate the new AIPC 49-32-11-70-030 O-RING (3) or AIPC 49-32-84-31-030 O-RING (3) with Mineral base Lubricating Oil-Turbine Engine - - (Material No.03BEB1) , Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) .
(2) Install the new O-ring (3) on the filter housing (2).
(3) Lubricate the new AIPC 49-32-11-70-050 O-RING (5) or AIPC 49-32-84-31-050 O-RING (5) with Mineral base Lubricating Oil-Turbine Engine - - (Material No.03BEB1) , Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) .
(4) Install the new O-ring (5) on the new AIPC 49-32-11-70-040 FILTER (4) or AIPC 49-32-84-31-040 FILTER (4).
(5) Install the new filter (4) into the filter housing (2).
(6) Put the filter housing (2) on the FCU (1).
(7) Rotate the filter housing (2) clockwise to engage assembly with studs and nuts (6).
(8) TORQUE the nuts (6) to between 0.47 and 0.43 m.daN (41.59 and 38.05 lbf.in )

Subtask 49-32-41-865-058-A ** ON A/C NOT FOR ALL

C. 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
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41

Subtask 49-32-41-870-051-A ** ON A/C NOT FOR ALL

D. Bleeding of the APU fuel line
(1) Bleed the air from the APU fuel line (Ref. AMM TASK 28-22-00-710-001).

NOTE: When the fuel that flows out from the drain hose contains no air, release the fuel-vent pushbutton switch.

Subtask 49-32-41-710-052-A ** ON A/C NOT FOR ALL

E. Start and operate the APU.
(1) Close APU access doors 315AL and 316AR. (Ref. AMM TASK 52-41-00-410-001).
(2) Start and operate the APU for 5 minutes (Ref. AMM TASK 49-00-00-860-008).
(3) Shutdown the APU (Ref. AMM TASK 49-00-00-860-009).
(4) Open APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-010-001).
(5) Do a check for leaks at the filter housing (2).

NOTE: No leakage are permitted.

5. Close-up
Subtask 49-32-41-410-053-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) Set the light switch 11LJ to the OFF position.
(3) Close APU access doors 315AL and 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
(5) Remove the 98L12003001000 HARNESS,SAFETY.

Subtask 49-32-41-860-053-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Pressurize the aircraft hydraulic systems
(Ref. AMM TASK 29-00-00-864-001).
(2) Remove the WARNING NOTICE(S).
(3) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 01:29:57 UTC