W DOC AIRBUS | AMM A320F

Installation of the Engine Fire-Extinguishing Pipe

TASK 26-21-49-400-002-A
Installation of the Engine Fire-Extinguishing Pipe

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: 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: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 410
ZONE: 420
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
WARNING NOTICE(S)
No specific
Torque wrench: range to between 900 and 800 lbf.in (10.17 and 9.04 m.daN ) T
53100141-1
4
PLUG, SHUNT
OR
OR
M83723-60-18AN
4
CAP, PROTECTIVE
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.06ABB1)
Polysulfide Sealant-Fuel Tank Fillet -
(Material No.14QGC1)
Wire-Locking Dia: 1 mm (0.041 inch) CRES -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
410
ENG 1 PYLON BOX AND FORWARD FAIRING
420
ENG 2 PYLON BOX AND FORWARD FAIRING
FOR [1000EM1] (ENGINE-1)
413AL, 415AL, 415BL, 437AL, 451AL
FOR [1000EM2] (ENGINE-2)
423AL, 425AL, 425BL, 447AL, 461AL
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
41
NUT
AIPC 26-21-06-01-100
42
NUT
AIPC 26-21-06-01-100
43
NUTS
AIPC 26-21-06-01-100
48
NUT
AIPC 26-21-06-01-100
15
ORING
AIPC 26-21-06-01-150
18
ORING
AIPC 26-21-06-01-150
21
ORING
AIPC 26-21-06-01-150
24
ORING
AIPC 26-21-06-01-150
4
ORING
AIPC 26-21-06-01-150
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 20-15-00-910-001-A
Handling Precautions for Electrostatic Discharge Sensitive Devices
TASK 26-12-00-710-001-A
Operational Check of Loop/Squib
TASK 26-21-00-720-003-A-01
Check Distribution Piping to Detect Leakage and Obstruction
TASK 26-21-00-720-003-B-01
Check Distribution Piping to Detect Leakage and Obstruction
TASK 26-21-49-820-001-A
Shimming Procedure for the Engine Fire-Extinguishing Pipe
TASK 36-11-53-400-001-A
Installation of the Overpressure Valve
TASK 36-11-54-400-001-A
Installation of the Fan Air Valve
TASK 54-57-22-000-001-A
Removal of the Apron Assemblies
TASK 54-57-22-400-001-A
Installation of the Apron Assemblies
TASK 71-13-11-000-040-A
Removal of the Fan Cowl Doors
TASK 71-13-11-000-041-A
Removal of the Fan Cowl Doors
TASK 71-13-11-400-040-A
Installation of the Fan Cowl Doors
TASK 71-13-11-400-041-A
Installation of the Fan Cowl Doors
TASK 78-30-00-081-041-A
Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-B
Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A
Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-B
Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-32-11-000-002-A
Removal of the Left or Right Half Door of Thrust Reverser
TASK 78-32-11-000-040-A
Removal of the Left or Right Half Door of Thrust Reverser
TASK 78-32-11-400-002-A
Installation of the Left or Right Half Door of Thrust Reverser
TASK 78-32-11-400-040-A
Installation of the Left or Right Half Door of Thrust Reverser
F Fire Extinguisher Bottle
F Forward-Engine Fire-Extinguishing Pipe ** ON A/C NOT FOR ALL
F Forward-Engine Fire-Extinguishing Pipe ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 26-21-49-860-054-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) On the center pedestal, on the ENG panel 115VU:
     (a) Make sure that the ENG/MODE/CRANK/NORM/IGN/START selector switch is in the NORM position.
     (b) Put a WARNING NOTICE(S) 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) On the AIR COND panel 30VU, make sure that the ENG 1(2) BLEED and APU BLEED pushbutton switches are released. Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
   (4) In the cockpit, on the HP ground connector, make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.
Subtask 26-21-49-865-054-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B2WE1Q44
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A1WE1Q43
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B2WE2Q42
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A1WE2Q41
Subtask 26-21-49-010-055-A ** ON A/C NOT FOR ALL
C. Get Access
   (1) Make sure that the left fan cowl is removed (Ref. AMM TASK 71-13-11-000-040):
     (a) FOR [1000EM1] (ENGINE-1)
437AL,
     (b) FOR [1000EM2] (ENGINE-2)
447AL.
   (2) Make sure that the left thrust reverser half is removed (Ref. AMM TASK 78-32-11-000-040):
     (a) FOR [1000EM1] (ENGINE-1)
451AL,
     (b) FOR [1000EM2] (ENGINE-2)
461AL.
   (3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
   (4) Make sure that the following access doors are removed:
     (a) FOR [1000EM1] (ENGINE-1)
413AL 415AL 415BL,
     (b) FOR [1000EM2] (ENGINE-2)
423AL 425AL 425BL.
   (5) Make sure that the apron assembly is removed (Ref. AMM TASK 54-57-22-000-001).
Subtask 26-21-49-040-051-A ** ON A/C NOT FOR ALL
D. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 26-21-49-010-055-B ** ON A/C NOT FOR ALL
E. Get Access
   (1) Make sure that the left fan cowl is removed (Ref. AMM TASK 71-13-11-000-041):
     (a) FOR [1000EM1] (ENGINE-1)
437AL
     (b) FOR [1000EM2] (ENGINE-2)
447AL.
   (2) Make sure that the left thrust reverser half is removed (Ref. AMM TASK 78-32-11-000-002):
     (a) FOR [1000EM1] (ENGINE-1)
451AL
     (b) FOR [1000EM2] (ENGINE-2)
461AL.
   (3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
   (4) Make sure that the following access doors are open:
     (a) FOR [1000EM1] (ENGINE-1)
415AL 415BL
     (b) FOR [1000EM2] (ENGINE-2)
425AL 425BL.
   (5) Make sure that the following access panel is removed:
     (a) FOR [1000EM1] (ENGINE-1)
413AL
     (b) FOR [1000EM2] (ENGINE-2)
423AL.
   (6) Make sure that the apron assembly is removed (Ref. AMM TASK 54-57-22-000-001).
Subtask 26-21-49-040-051-B ** ON A/C NOT FOR ALL
F. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 26-21-49-481-055-B ** ON A/C NOT FOR ALL
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.
G. Installation of the Safety Tool
F Fire Extinguisher Bottle ** ON A/C NOT FOR ALL
   (1) Make sure that the 53100141-1 PLUG, SHUNTM83723-60-18AN CAP, PROTECTIVE are installed on the two cartridges (1).
4. Procedure
Subtask 26-21-49-420-052-A ** ON A/C NOT FOR ALL
A. Installation of the Engine Fire-Extinguishing Pipes
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (4) Remove the PLUG-BLANKING from each disconnected line end.
   (5) Do the steps that follow to install the fire extinguishing pipe (7):
     (a) Put the fire extinguishing pipe (7) in the correct position.
     (b) Install the bolt (37), the washer (38) and the new AIPC 26-21-06-01-100 NUT (41) on the clamp (40).
     (c) Install the bolt (39) and the new AIPC 26-21-06-01-100 NUT (42) on the fire extinguishing pipe (7).
     (d) Install the bolts (44) and the new AIPC 26-21-06-01-100 NUTS (43) on the fire extinguishing pipe (7).
     (e) Tighten the bolts (37), (39) and (44).
CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT EQUIPMENT FROM FLEXIBLE HOSES AND RIGID TUBING. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL CAUSE DAMAGE TO THE HOSES AND TUBES.
   (6) Do the steps that follow to install the fire extinguishing pipe (10):
     (a) Put the fire extinguishing pipe (10) in the correct position.
     (b) Hold the nut (9) and tighten the union (8) of the fire extinguishing pipe (7).
     (c) TORQUE the union (8) to between 900 and 800 lbf.in (10.17 and 9.04 m.daN ) T of the fire extinguishing pipe (7).
     (d) Measure the clearance between the bracket assembly of the fire extinguishing pipe and the cross beam, and install a shim as necessary (Ref. AMM TASK 26-21-49-820-001).
     (e) Install the washers (6) and the bolts (5) on the fire extinguishing pipe (10).
     (f) Install the clamp (45) on the clamp block (46) with the bolts (47).
     (g) Tighten the bolts (47).
     (h) Put the left lower-bulkhead assembly (50) in the correct position.
     (i) Install the bolts (51), (52) and (53), the washers (48) and the nuts (49).
     (j) Tighten the nuts (49).
     (k) Apply a layer of Polysulfide Sealant-Fuel Tank Fillet - (Material No.06ABB1) with a brush around the fire extinguishing pipe (10) and against the left lower-bulkhead assembly (50).
   (7) Do the steps that follow to install the fire extinguishing pipe (3):
     (a) Put a new AIPC 26-21-06-01-150 ORING (4) in the correct position on the fire extinguishing pipe (10).
     (b) Put the fire extinguishing pipe (3) in the correct position.
     (c) Put the clamp (33), the bushing (36) and the fire extinguishing pipe (3) in their correct position.
     (d) Install the washer (34) and the bolt (35) on the clamp (33).
     (e) Tighten the bolt (35).
     (f) Install the washers (12) and the bolts (11).
     (g) Tighten the bolts (11).
   (8) Do the steps that follow to install the fire extinguishing pipe (26):
     (a) Put the new AIPC 26-21-06-01-150 ORING (21) in the correct position on the end fitting (22) of the fire extinguishing pipe (3).
     (b) Install the fire extinguishing pipe (26) in the correct position between the fire extinguishing pipe (3), the union (23) and the support (31).
     (c) Install the rubber pad (30) on the fire extinguishing pipe (26) and on the support (31).
     (d) Install the washers (29), the spacers (28) and the bolts (27).
NOTE: Airbus recommends not to tighten the bolts (27) at this time.
     (e) Tighten the knurled nut (20) of the fire extinguishing pipe (26) fully with your hand.
     (f) Tighten the bolts (27).
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.
     (g) Safety the knurled nut (20) of the fire extinguishing pipe (26) and the end fitting (22) of the fire extinguishing pipe (3) with 14QGC1Wire-Locking Dia: 1 mm (0.041 inch) CRES -.
   (9) Do the steps that follow to install the fire extinguishing pipe (13):
     (a) Put the new AIPC 26-21-06-01-150 ORING (18) in the correct position on the end fitting (17) of the fire extinguishing pipe (13).
     (b) Install the fire extinguishing pipe (13) in the correct position between the fire extinguishing pipe (26) and the union (16).
     (c) Tighten the knurled nut (19) of the fire extinguishing pipe (26) fully with your hand.
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.
     (d) Safety the knurled nut (19) of the fire extinguishing pipe (26) and the end fitting (17) of the fire extinguishing pipe (13) with 14QGC1Wire-Locking Dia: 1 mm (0.041 inch) CRES -.
Subtask 26-21-49-420-052-C ** ON A/C NOT FOR ALL
A. Installation of the Engine Fire-Extinguishing Pipes
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (4) Remove the PLUG-BLANKING from each disconnected line end.
   (5) Do the steps that follow to install the fire extinguishing pipe (7):
     (a) Put the fire extinguishing pipe (7) in the correct position.
     (b) Install the bolt (37), the washer (38) and the new AIPC 26-21-06-01-100 NUT (41) on the clamp (40).
     (c) Install the bolt (39) and the new AIPC 26-21-06-01-100 NUT (42) on the fire extinguishing pipe (7).
     (d) Install the bolts (44) and the new AIPC 26-21-06-01-100 NUTS (43) on the fire extinguishing pipe (7).
     (e) Tighten the bolts (37), (39) and (44).
CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT EQUIPMENT FROM FLEXIBLE HOSES AND RIGID TUBING. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL CAUSE DAMAGE TO THE HOSES AND TUBES.
   (6) Do the steps that follow to install the fire extinguishing pipe (10):
     (a) Put the fire extinguishing pipe (10) in the correct position.
     (b) Hold the nut (9) and tighten the union (8) of the fire extinguishing pipe (7).
     (c) TORQUE the union (8) to between 900 and 800 lbf.in (10.17 and 9.04 m.daN ) T of the fire extinguishing pipe (7).
     (d) Install the washers (6) and the bolts (5) on the fire extinguishing pipe (10).
     (e) Install the clamp (45) on the clamp block (46) with the bolts (47).
     (f) Tighten the bolts (47).
     (g) Put the left lower-bulkhead assembly (50) in the correct position.
     (h) Install the bolts (51), (52) and (53), the washers (48) and the nuts (49).
     (i) Tighten the nuts (49).
     (j) Apply a layer of Polysulfide Sealant-Fuel Tank Fillet - (Material No.06ABB1) with a brush around the fire extinguishing pipe (10) and against the left lower-bulkhead assembly (50).
   (7) Do the steps that follow to install the fire extinguishing pipe (3):
     (a) Put a new AIPC 26-21-06-01-150 ORING (4) in the correct position on the fire extinguishing pipe (10).
     (b) Put the fire extinguishing pipe (3) in the correct position.
     (c) Put the clamp (33), the bushing (36) and the fire extinguishing pipe (3) in their correct position.
     (d) Install the washer (34) and the bolt (35) on the clamp (33).
     (e) Tighten the bolt (35).
     (f) Install the washers (12) and the bolts (11).
     (g) Tighten the bolts (11).
   (8) Do the steps that follow to install the fire extinguishing pipe (26):
     (a) Put the new AIPC 26-21-06-01-150 ORING (21) in the correct position on the end fitting (22) of the fire extinguishing pipe (3).
     (b) Install the fire extinguishing pipe (26) in the correct position between the fire extinguishing pipe (3), the union (23) and the support (31).
     (c) Install the rubber pad (30) on the fire extinguishing pipe (26) and on the support (31).
     (d) Install the washers (29), the spacers (28) and the bolts (27).
NOTE: Airbus recommends not to tighten the bolts (27) at this time.
     (e) Tighten the knurled nut (20) of the fire extinguishing pipe (26) fully with your hand.
     (f) Tighten the bolts (27).
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.
     (g) Safety the knurled nut (20) of the fire extinguishing pipe (26) and the end fitting (22) of the fire extinguishing pipe (3) with 14QGC1Wire-Locking Dia: 1 mm (0.041 inch) CRES -.
   (9) Do the steps that follow to install the fire extinguishing pipe (13):
     (a) Put the new AIPC 26-21-06-01-150 ORING (18) in the correct position on the end fitting (17) of the fire extinguishing pipe (13).
     (b) Install the fire extinguishing pipe (13) in the correct position between the fire extinguishing pipe (26) and the union (16).
     (c) Tighten the knurled nut (19) of the fire extinguishing pipe (26) fully with your hand.
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.
     (d) Safety the knurled nut (19) of the fire extinguishing pipe (26) and the end fitting (17) of the fire extinguishing pipe (13) with 14QGC1Wire-Locking Dia: 1 mm (0.041 inch) CRES -.
Subtask 26-21-49-420-052-D ** ON A/C NOT FOR ALL
A. Installation of the Engine Fire-Extinguishing Pipes
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (4) Remove the PLUG-BLANKING from each disconnected line end.
   (5) Do the steps that follow to install the fire extinguishing pipe (7):
     (a) Put the fire extinguishing pipe (7) in the correct position.
     (b) Install the washer (47), the bolt (46) and the new AIPC 26-21-06-01-100 NUT (48) on the fire extinguishing pipe (7).
     (c) Tighten the bolt (46).
   (6) Do the steps that follow to install the fire extinguishing pipe (38):
     (a) Put the fire extinguishing pipe (38) in the correct position.
     (b) Install the washer (40), the bolt (39) and the new AIPC 26-21-06-01-100 NUT (41) on the fire extinguishing pipe (38).
     (c) Install the washer (43), the bolt (44) and the new AIPC 26-21-06-01-100 NUT (42) on the fire extinguishing pipe (38).
     (d) Tighten the bolts (39) and (44).
     (e) Hold the nut (45) and tighten the union (37) of the fire extinguishing pipe (38).
CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT EQUIPMENT FROM FLEXIBLE HOSES AND RIGID TUBING. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL CAUSE DAMAGE TO THE HOSES AND TUBES.
   (7) Do the steps that follow to install the fire extinguishing pipe (10):
     (a) Put the fire extinguishing pipe (10) in the correct position.
     (b) Hold the nut (9) and tighten the union (8) of the fire extinguishing pipe (7).
     (c) TORQUE the union (8) to between 900 and 800 lbf.in (10.17 and 9.04 m.daN ) T of the fire extinguishing pipe (7).
     (d) Install the washers (6) and the bolts (5) on the fire extinguishing pipe (10).
     (e) Install the clamp (49) on the clamp block (50) with the bolts (51).
     (f) Tighten the bolts (51).
     (g) Put the left lower-bulkhead assembly (54) in the correct position.
     (h) Install the bolts (55), (56) and (57), the washers (52) and the nuts (53).
     (i) Tighten the nuts (53).
     (j) Apply a layer of Polysulfide Sealant-Fuel Tank Fillet - (Material No.06ABB1) with a brush around the fire extinguishing pipe (10) and against the left lower-bulkhead assembly (54).
   (8) Do the steps that follow to install the fire extinguishing pipe (3):
     (a) Put a new AIPC 26-21-06-01-150 ORING (4) in the correct position on the fire extinguishing pipe (10).
     (b) Put the fire extinguishing pipe (3) in the correct position.
     (c) Put the clamp (33), the bushing (36) and the fire extinguishing pipe (3) in their correct position.
     (d) Install the washer (34) and the bolt (35) on the clamp (33).
     (e) Tighten the bolt (35).
     (f) Install the washers (12) and the bolts (11).
     (g) Tighten the bolts (11).
   (9) Do the steps that follow to install the fire extinguishing pipe (26):
     (a) Put the new AIPC 26-21-06-01-150 ORING (21) in the correct position on the end fitting (22) of the fire extinguishing pipe (3).
     (b) Install the fire extinguishing pipe (26) in the correct position between the fire extinguishing pipe (3), the union (23) and the support (31).
     (c) Install the rubber pad (30) on the fire extinguishing pipe (26) and on the support (31).
     (d) Install the washers (29), the spacers (28) and the bolts (27).
NOTE: Airbus recommends not to tighten the bolts (27) at this time.
     (e) Tighten the knurled nut (20) of the fire extinguishing pipe (26) fully with your hand.
     (f) Tighten the bolts (27).
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.
     (g) Safety the knurled nut (20) of the fire extinguishing pipe (26) and the end fitting (22) of the fire extinguishing pipe (3) with 14QGC1Wire-Locking Dia: 1 mm (0.041 inch) CRES -.
   (10) Do the steps that follow to install the fire extinguishing pipe (13):
     (a) Put the new AIPC 26-21-06-01-150 ORING (18) in the correct position on the end fitting (17) of the fire extinguishing pipe (13).
     (b) Install the fire extinguishing pipe (13) in the correct position between the fire extinguishing pipe (26) and the union (16).
     (c) Tighten the knurled nut (19) of the fire extinguishing pipe (26) fully with your hand.
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.
     (d) Safety the knurled nut (19) of the fire extinguishing pipe (26) and the end fitting (17) of the fire extinguishing pipe (13) with 14QGC1Wire-Locking Dia: 1 mm (0.041 inch) CRES -.
Subtask 26-21-49-720-051-A ** ON A/C NOT FOR ALL
B. Test
   (1) Do a check of the engine fire-extinguishing distribution piping for leakage and obstruction (Ref. AMM TASK 26-21-00-720-003).
Subtask 26-21-49-420-053-A ** ON A/C NOT FOR ALL
C. Connection of the Fire Extinguishing Pipe to the Fire Extinguisher Bottles
   (1) Put the new AIPC 26-21-06-01-150 ORING (24) in the correct position on the union (23).
   (2) Tighten the knurled nut (25) of the fire extinguishing pipe (26) fully with your hand.
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) Safety the knurled nut (25) of the fire extinguishing pipe (26) and the union (23) with 14QGC1Wire-Locking Dia: 1 mm (0.041 inch) CRES -.
   (4) Put the new AIPC 26-21-06-01-150 ORING (15) in the correct position on the union (16).
   (5) Tighten the knurled nut (14) of the fire extinguishing pipe (13) fully with your hand.
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.
   (6) Safety the knurled nut (14) of the fire extinguishing pipe (13) and the union (16) with 14QGC1Wire-Locking Dia: 1 mm (0.041 inch) CRES -.
Subtask 26-21-49-081-053-B ** ON A/C NOT FOR ALL
D. Removal of the Safety Tools
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.
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) Do these steps for each fire extinguisher bottle:
     (a) Before you touch the cartridge, refer to the handling precautions for devices that are sensitive to electrostatic discharge (Ref. AMM TASK 20-15-00-910-001).
     (b) Remove the 53100141-1 PLUG, SHUNTM83723-60-18AN CAP, PROTECTIVE from the cartridges (1).
Subtask 26-21-49-420-068-A ** ON A/C NOT FOR ALL
E. Connection of the Electrical Connectors to the Fire Extinguisher Bottles
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
   (1) Do these steps for each fire extinguisher bottle:
     (a) Remove the CAP-BLANKING from each electrical connector and receptacle.
     (b) Make sure that all the electrical connections are clean and in the correct condition.
     (c) Connect the electrical connector (2) to the cartridge (1).
Subtask 26-21-49-710-050-A ** ON A/C NOT FOR ALL
F. Do an operational test of the loop/squib (Ref. AMM TASK 26-12-00-710-001).
5. Close-up
Subtask 26-21-49-420-054-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
   (1) Install the overpressure valve (Ref. AMM TASK 36-11-53-400-001):
     (a) FOR [1000EM1] (ENGINE-1)
overpressure valve 5HA1,
     (b) FOR [1000EM2] (ENGINE-2)
overpressure valve 5HA2.
   (2) Install the engine fan air valve (Ref. AMM TASK 36-11-54-400-001):
     (a) FOR [1000EM1] (ENGINE-1)
engine fan air valve 9HA1,
     (b) FOR [1000EM2] (ENGINE-2)
engine fan air valve 9HA2.
Subtask 26-21-49-410-051-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) Install the access doors:
     (a) FOR [1000EM1] (ENGINE-1)
415BL 415AL,
     (b) FOR [1000EM2] (ENGINE-2)
425BL 425AL.
   (3) Install the access panels:
     (a) FOR [1000EM1] (ENGINE-1)
413AL,
     (b) FOR [1000EM2] (ENGINE-2)
423AL.
   (4) Install the apron assembly (Ref. AMM TASK 54-57-22-400-001).
   (5) Install the left thrust-reverser half (Ref. AMM TASK 78-32-11-400-040):
NOTE: If the engine is removed, the installation of the fan cowls below is not applicable.
     (a) FOR [1000EM1] (ENGINE-1)
451AL,
     (b) FOR [1000EM2] (ENGINE-2)
461AL.
Subtask 26-21-49-440-050-A ** ON A/C NOT FOR ALL
C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 26-21-49-410-052-A ** ON A/C NOT FOR ALL
D. Close Access
   (1) Install the left fan cowl (Ref. AMM TASK 71-13-11-400-040):
     (a) FOR [1000EM1] (ENGINE-1)
437AL,
     (b) FOR [1000EM2] (ENGINE-2)
447AL.
   (2) Remove the WARNING NOTICE(S).
   (3) Remove the access platform(s).
Subtask 26-21-49-410-051-B ** ON A/C NOT FOR ALL
E. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the access doors:
     (a) FOR [1000EM1] (ENGINE-1)
415BL 415AL
     (b) FOR [1000EM2] (ENGINE-2)
425BL 425AL.
   (3) Install the access panel:
     (a) FOR [1000EM1] (ENGINE-1)
413AL
     (b) FOR [1000EM2] (ENGINE-2)
423AL.
   (4) Install the apron assembly (Ref. AMM TASK 54-57-22-400-001).
   (5) Install the left thrust-reverser half (Ref. AMM TASK 78-32-11-400-002):
NOTE: If the engine is removed, the installation of the left thrust-reverser half below is not applicable.
     (a) FOR [1000EM1] (ENGINE-1)
451AL
     (b) FOR [1000EM2] (ENGINE-2)
461AL.
Subtask 26-21-49-440-050-B ** ON A/C NOT FOR ALL
F. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 26-21-49-410-052-B ** ON A/C NOT FOR ALL
G. Close Access
   (1) Install the left fan cowl (Ref. AMM TASK 71-13-11-400-041):
     (a) FOR [1000EM1] (ENGINE-1)
437AL
     (b) FOR [1000EM2] (ENGINE-2)
447AL.
   (2) Remove the WARNING NOTICE(S).
   (3) Remove the access platform(s).
Subtask 26-21-49-865-053-A ** ON A/C NOT FOR ALL
H. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B2WE1Q44
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A1WE1Q43
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B2WE2Q42
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A1WE2Q41
[Rev.10 from 2021] 2026.04.01 07:58:28 UTC
"Aviabrain" 2025