DOC AIRBUS | AMM A320FInstallation of the Engine Fire-Extinguisher Tube-Assembly
TASK 26-21-49-400-003-A
Installation of the Engine Fire-Extinguisher Tube-Assembly
1. Reason for the Job
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 26-21-49-941-057-A ** ON A/C NOT FOR ALL
Subtask 26-21-49-420-056-A ** ON A/C NOT FOR ALL
Subtask 26-21-49-410-054-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.03.31 23:45:12 UTC
Installation of the Engine Fire-Extinguisher Tube-Assembly
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 430 | ENG 1 AIR INTAKE, FAN AND ACCESS GEARBOX |
| 440 | ENG 2 AIR INTAKE, FAN AND ACCESS GEARBOX |
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-040-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-A | Closing of the Fan Cowl Doors |
Fire Extinguisher Tube AssemblySubtask 26-21-49-941-057-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the panel 115VU:
(3) On the panel 50VU:
Subtask 26-21-49-010-060-A ** ON A/C NOT FOR ALL (1) On the panel 115VU:
- Make sure that the ENG/MODE/CRANK/NORM/IGN/START selector switch is in the NORM position.
- Make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine 1(2).
(3) On the 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.
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 26-21-49-865-057-A ** ON A/C NOT FOR ALL (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B | 2WE1 | Q44 |
| 121VU | ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A | 1WE1 | Q43 |
| 121VU | ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B | 2WE2 | Q42 |
| 121VU | ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A | 1WE2 | Q41 |
Subtask 26-21-49-420-056-A ** ON A/C NOT FOR ALL
A. Installation of the Fire Extinguisher Tube Assembly
(1) Remove the protective covers from the hose (5), the pylon tube (10) and the fire extinguisher tube (15).
(2) Put the clamps (35) on the tube (15). Attach the clamps to the brackets on the nose cowl with the screws (20), washers (30) and nuts (25). (4 locations, See Detail A).
(3) Put the clamps (35) on the tube (15). Attach the clamps to the brackets on the nose cowl with the screws (20). (4 locations, See Detail B).
(4) Put the clamps (35) on the tube (15). Attach the clamps to the brackets on the nose cowl with the screws (20), washers (30) and nuts (25). (2 locations, See Detail C).
(5) Put the clamps (35) on the tube (15). Attach the clamp to the stiffener at the bottom of the nose cowl with the screw (20), washer (30) and nut (25). (See Detail D).
(6) TORQUE the screws (20) and nuts (25) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
.
(7) At the top of the engine connect the hose (5) to the pylon tube (10).
(8) TORQUE the hose (5) fitting to between 945 and 855 lbf.in (10.68 and 9.66 m.daN ).
5. Close-up(1) Remove the protective covers from the hose (5), the pylon tube (10) and the fire extinguisher tube (15).
(2) Put the clamps (35) on the tube (15). Attach the clamps to the brackets on the nose cowl with the screws (20), washers (30) and nuts (25). (4 locations, See Detail A).
(3) Put the clamps (35) on the tube (15). Attach the clamps to the brackets on the nose cowl with the screws (20). (4 locations, See Detail B).
(4) Put the clamps (35) on the tube (15). Attach the clamps to the brackets on the nose cowl with the screws (20), washers (30) and nuts (25). (2 locations, See Detail C).
(5) Put the clamps (35) on the tube (15). Attach the clamp to the stiffener at the bottom of the nose cowl with the screw (20), washer (30) and nut (25). (See Detail D).
(6) TORQUE the screws (20) and nuts (25) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
. (7) At the top of the engine connect the hose (5) to the pylon tube (10).
(8) TORQUE the hose (5) fitting to between 945 and 855 lbf.in (10.68 and 9.66 m.daN )
. Subtask 26-21-49-410-054-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 fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
Subtask 26-21-49-865-058-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
B. 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 | ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B | 2WE1 | Q44 |
| 121VU | ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A | 1WE1 | Q43 |
| 121VU | ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B | 2WE2 | Q42 |
| 121VU | ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A | 1WE2 | Q41 |