W DOC AIRBUS | AMM A320F

Removal of the Engine Fire-Extinguisher Bottle

TASK 26-21-41-000-001-F
Removal of the Engine Fire-Extinguisher Bottle

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: THE CARTRIDGE IS AN EXPLOSIVE DEVICE. REMOVE IT BEFORE YOU DISASSEMBLE THE FIRE EXTINGUISHER BOTTLE. TO PREVENT INJURY TO THE PERSONNEL BECAUSE OF THE EXPLOSION OF THE CARTRIDGE IF IT HAS NOT BEEN FIRED:
  • INSTALL A SHUNT DEVICE.
  • THIS WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE BEFORE ITS REMOVAL.
DO NOT USE A FOIL SHUNT.
WARNING: BE VERY CAREFUL WHEN YOU MOVE A FULL FIRE EXTINGUISHER BOTTLE. A SUDDEN OR HEAVY SHOCK TO A FULL BOTTLE CAN CAUSE UNWANTED DISCHARGE AND INJURY TO PERSONS.
WARNING: IF YOU REMOVE THE FIRE EXTINGUISHER BOTTLES IN A CLOSED HANGAR, MAKE SURE THAT THERE IS A FLOW OF NEW AIR IN THE HANGAR.
ZONE: 415
ZONE: 425
FIN: 6WE1
FIN: 6WE2
FIN: 8WE1
FIN: 8WE2
1. Reason for the Job
Self explanatory
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
CAP - BLANKING
No specific
AR
PLUG - BLANKING
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
98D27803000000
AR
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
M83723-60-18AN
1
CAP, PROTECTIVE
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
415
LOWER PYLON
425
LOWER PYLON
FOR [6WE1] (BOTTLE 1-FIRE EXTING, ENG 1)
415BL
FOR [6WE2] (BOTTLE 1-FIRE EXTING, ENG 2)
425BL
FOR [8WE1] (BOTTLE 2-FIRE EXTING, ENG 1)
415CR
FOR [8WE2] (BOTTLE 2-FIRE EXTING, ENG 2)
425CR
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 20-15-00-910-001-A
Handling Precautions for Electrostatic Discharge Sensitive Devices
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 26-21-41-000-002-C
Removal of the Discharge Head of the Engine Fire-Extinguisher Bottle
TASK 26-21-41-000-004-D
Removal of the Cartridge of the Engine Fire-Extinguisher Bottle
TASK 27-00-00-480-002-A
Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 54-51-21-000-804-A
Removal of the Pylon Lateral Access-Doors
F Access Door Supports
F Engine Fire-Extinguisher Bottle
3. Job Set-up
Subtask 26-21-41-861-053-A
A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 26-21-41-875-065-A
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
FOR FIN: 6WE2 (BOTTLE 1FIRE EXTING, ENG 2) FOR FIN: 6WE1 (BOTTLE 1FIRE EXTING, ENG 1)
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B2WE1Q43
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A1WE1Q42
FOR FIN: 8WE2 (BOTTLE 2FIRE EXTING, ENG 2) FOR FIN: 8WE1 (BOTTLE 2FIRE EXTING, ENG 1)
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B2WE2Q41
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A1WE2Q40
Subtask 26-21-41-941-055-A
C. Safety Precautions
   (1) On the center pedestal, on ENG panel 115VU:
     (a) Make sure that the ENG/MODE/CRANK/NORM/IGN/START selector switch is in the NORM position.
     (b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
     (c) Put WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
   (2) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
   (3) On the ENG section of overhead maintenance panel 50VU:
     (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
   (4) On FLAPS panel 114VU:
     (a) Put the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION in position on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
   (5) Put a WARNING NOTICE(S) on the flap/slat control lever to tell persons not to operate the flap/slat controls.
Subtask 26-21-41-010-066-A
D. Get Access
   (1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below the pylon.
   (2) Remove the pylon lateral access-doors (Ref. AMM TASK 54-51-21-000-804):
     (a) FOR [6WE1] (BOTTLE 1-FIRE EXTING, ENG 1)
     (b) FOR [8WE1] (BOTTLE 2-FIRE EXTING, ENG 1)
     (c) FOR [6WE2] (BOTTLE 1-FIRE EXTING, ENG 2)
     (d) FOR [8WE2] (BOTTLE 2-FIRE EXTING, ENG 2)
   (3) Remove the access door supports:
F Access Door Supports
     (a) Remove the screws (1).
     (b) Remove the access door supports (2) from the structure (3).
4. Procedure
Subtask 26-21-41-020-077-A
A. Disconnect the Electrical Connector
WARNING: DO NOT TOUCH THE CARTRIDGE BEFORE YOU DO THE PROCEDURE APPLICABLE TO DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE THE FIRE EXTINGUISHER BOTTLE TO RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS.
   (1) Before you touch the cartridge, do the procedure for devices that are sensitive to electrostatic discharge (Ref. AMM TASK 20-15-00-910-001).
   (2) Disconnect the electrical connector (6) from the pressure switch (7).
   (3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Subtask 26-21-41-481-054-A
B. Installation of the Safety Tool
WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.
   (1) Disconnect the electrical connector (10) from the cartridge (11).
   (2) Put a M83723-60-18AN CAP, PROTECTIVE on the cartridge (11).
   (3) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Subtask 26-21-41-020-078-A
C. Removal of the Fire Extinguisher Bottle
   (1) Loosen the nut of the coupling (2) to disconnect the line (1) from the discharge head (12).
   (2) Remove the coupling (2).
   (3) Remove and discard the seal (13).
   (4) Put the PLUG-BLANKING in each disconnected line end.
   (5) Remove the four bolts (4) and the four washers (3).
   (6) Remove the bottle (5):
WARNING: BE VERY CAREFUL WHEN YOU MOVE A FULL FIRE EXTINGUISHER BOTTLE. A SUDDEN OR HEAVY SHOCK TO A FULL BOTTLE CAN CAUSE UNWANTED DISCHARGE AND INJURY TO PERSONS.
     (a) Remove the bottle (5) and put it on an applicable support.
Subtask 26-21-41-020-079-A
D. Removal of the Cartridge
   (1) Remove the cartridge from the discharge head of the engine fire-extinguisher bottle (Ref. AMM TASK 26-21-41-000-004).
Subtask 26-21-41-020-080-A
E. Removal of the Discharge Head
   (1) Remove the discharge head from the engine fire-extinguisher bottle (Ref. AMM TASK 26-21-41-000-002).
[Rev.10 from 2021] 2026.03.31 23:44:58 UTC
"Aviabrain" 2025