DOC AIRBUS | AMM A320FRemoval of the Fuel Control Unit (FCU) (131-9(A))
TASK 49-32-11-000-003-A
Removal of the Fuel Control Unit (FCU) (131-9(A))
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 49-32-11-941-059-A ** ON A/C NOT FOR ALL Subtask 49-32-11-860-064-A ** ON A/C NOT FOR ALL
Subtask 49-32-11-020-054-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:29:50 UTC
Removal of the Fuel Control Unit (FCU) (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:
OBEY THE FUEL SAFETY PROCEDURES.
1. Reason for the JobSelf explanatory
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 | CAP - BLANKING |
| No specific | AR | CONTAINER 10 L(2 1/2 USGAL) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315AL, 316AR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
| TASK 28-00-00-910-001-A | Fuel Safety Procedures |
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 52-41-00-010-001-A | Open the APU Doors for Access |
Fuel Control UnitSubtask 49-32-11-941-059-A ** ON A/C NOT FOR ALL Subtask 49-32-11-860-064-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 the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3) Put a warning notice in the cockpit 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).
(5) Put the CONTAINER 10 L(2 1/2 USGAL) below the Fuel Control Unit (FCU).
Subtask 49-32-11-865-065-A ** ON A/C NOT FOR ALL (1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
(2) On the panel 25VU, make sure that the APU MASTER SW p/bsw is OFF.
(3) Put a warning notice in the cockpit 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).
(5) Put the CONTAINER 10 L(2 1/2 USGAL) below the Fuel Control Unit (FCU).
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 49-32-11-010-057-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
D. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the LIGHT SW 11LJ to the ON position.
4. Procedure(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the LIGHT SW 11LJ to the ON position.
Subtask 49-32-11-020-054-A ** ON A/C NOT FOR ALL
A. Removal of the FCU
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(4) Loosen the nut (2) and turn the plate (4) to release the union (3).
(5) Disconnect the union (3) from the FCU (5).
(6) Remove and discard the O-rings (1).
(7) Loosen the captive bolts (12).
(8) Turn the plate (14) free from the drain pipe (15), the actuator return pipe (11) and the high pressure fuel supply pipe (10).
(10) Disconnect the drain pipe (15), the actuator return pipe (11) and the high pressure fuel supply pipe (10) from the FCU (5).
(12) Loosen the clamp (7) and remove the FCU (5) from the oil module.
(13) Remove and discard the O-ring (6).
(14) Put blanking plugs on the disconnected drain pipe (15), the actuator return pipe(11), the high pressure fuel supply pipe (10) and the FCU (5).
CAUTION:
PUT PLASTIC CAPS OR PLUGS ON ALL FUEL AND/OR LUBRICATION SYSTEM COMPONENTS AND LINES. IF YOU USE TAPE, CLOTH, OR METAL CAPS ON THEM, YOU CAN DAMAGE THE APU.
CAUTION:
YOU MUST USE TWO WRENCHES AND HOLD THE COMPONENT WHEN YOU REMOVE/INSTALL THE PIPE COUPLINGS AND/OR UNIONS. THIS PREVENTS DAMAGE TO THE COMPONENT.
(1) Disconnect the electrical connector (17) from the FCU solenoid. (2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(3) Remove and discard the lockwire from the union (3). (4) Loosen the nut (2) and turn the plate (4) to release the union (3).
(5) Disconnect the union (3) from the FCU (5).
(6) Remove and discard the O-rings (1).
(7) Loosen the captive bolts (12).
(8) Turn the plate (14) free from the drain pipe (15), the actuator return pipe (11) and the high pressure fuel supply pipe (10).
NOTE: The actuator supply pipe (13) and the plate (14) make one assembly.
(9) Attach a label to the drain pipe (15), the actuator return pipe (11) and the high pressure fuel supply pipe (10) regarding to its FCU port indication. (10) Disconnect the drain pipe (15), the actuator return pipe (11) and the high pressure fuel supply pipe (10) from the FCU (5).
CAUTION:
WHEN YOU INSTALL THE FCU, DO NOT MOVE THE TUBE SPACER BRACKET. DO NOT USE FORCE AND DO NOT BEND THE FCU PIPES. THIS WILL PREVENT INCORRECT POSITIONING OF THE TUBE COUPLINGS.
(11) Remove and discard the O-rings (9) and (16). (12) Loosen the clamp (7) and remove the FCU (5) from the oil module.
(13) Remove and discard the O-ring (6).
(14) Put blanking plugs on the disconnected drain pipe (15), the actuator return pipe(11), the high pressure fuel supply pipe (10) and the FCU (5).