W DOC AIRBUS | AMM A320F

Installation of the Wing Bellow

TASK 36-11-49-400-841-A
Installation of the Wing Bellow

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.
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.
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
1
ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific
1
FOIL - ALUMINUM
No specific
2
TIE WRAP(S)
No specific
AR
WARNING NOTICE(S)
No specific
1
WATER - SOAPY SOLUTION
98D27803000000
AR
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
98L12003001000
1
HARNESS,SAFETY
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.14QEB1)
Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -
 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
191DB
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
413ET
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
423ET
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
6
SEAL
AIPC 36-11-86-01-300
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
6
SEAL
AIPC 36-11-86-02-300
 E. Referenced Information
REFERENCE
DESIGNATION
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 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 27-00-00-480-002-A
Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 36-12-00-860-802-A
Pressurization of the Bleed System with the APU
TASK 36-12-00-860-803-A
Pressurization of the Bleed System through the HP Ground Connector
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 54-53-11-000-804-A
Removal of the Pylon-to-Wing Access Panels and Doors
TASK 54-53-11-400-804-A
Installation of the Pylon-to-Wing Access Panels and Doors
TASK 71-00-00-860-833-A
Procedure to Prevent Engine Motoring
TASK 78-30-00-040-805-A
Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A
Reactivation of the Thrust Reverser System after Ground Maintenance
F Wing Bellow
3. Job Set-up
Subtask 36-11-49-860-140-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002) or (Ref. AMM TASK 24-41-00-861-002).
   (2) In the cockpit, on AIR COND panel 30VU:
     (a) Make sure that the ENG 1(2) BLEED pushbutton switch is released (OFF legend on).
     (b) Make sure that the APU BLEED pushbutton switch is released (ON legend off).
     (c) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to operate the pneumatic system.
   (3) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
   (4) On access door 191DB, on the HP ground connector:
     (a) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to pressurize the pneumatic system.
   (5) In the cockpit, on FLAPS panel 114VU:
     (a) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is in position on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
     (b) Make sure that the WARNING NOTICE(S) is(are) in position on the flap/slat control lever to tell persons not to operate the flap/slat controls.
Subtask 36-11-49-865-248-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
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENG 1)
49VUAIR BLEED/ENG 1/CTL2HA1D11
122VUAIR BLEED/ENG 1/MONG3HA1Z23
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 2)
49VUAIR BLEED/ENG 2/MONG3HA2D12
122VUAIR BLEED/ENG 2/CTL2HA2Z22
Subtask 36-11-49-040-188-A ** ON A/C NOT FOR ALL
C. Make sure that the thrust reverser system is deactivated for ground maintenance (Ref. AMM TASK 78-30-00-040-805).
Subtask 36-11-49-010-307-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the fan cowl doors.
   (2) Put on and attach a 98L12003001000 HARNESS,SAFETY before you start work in the work area.
   (3) Make sure that the pylon access panel are open (Ref. AMM TASK 54-53-11-000-804):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
413ET
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
423ET
4. Procedure
Subtask 36-11-49-420-167-A ** ON A/C NOT FOR ALL
A. Installation of the Wing Bellow
   (1) If you use the APU to energize the electrical circuits, stop the APU:
   (2) In the cockpit, on the SD bleed page:
     (a) Make sure that the pressure and the temperature of the bleed-air duct system are in ambient conditions.
WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.
WARNING: DO NOT TOUCH THE UNIT UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE SENSING ELEMENT.
   (3) Remove the blanking caps from the ducts (3) and (5).
   (4) Do an inspection of the component interfaces and the adjacent area.
   (5) Clean the component interfaces and the adjacent area.
   (6) If a new wing bellow is installed, compress the wing bellow (2) with TIE WRAP(S).
   (7) Put the wing bellow (2) in position between ducts (3) and (5).
   (8) Install and tighten the clamp (4) on the duct (3) and the wing bellow (2).
     (a) Point the clamp (4) for the best tool access, but not close to the OverHeat Detection System (OHDS) or environment.
   (9) Put a new seal (6) in position in the flange of the wing bellow (2) as follows:
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
Use a new AIPC 36-11-86-01-300 SEAL (6).
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
Use a new AIPC 36-11-86-02-300 SEAL (6).
   (10) Carefully cut the tie wraps to release the wing bellow (2) on the duct (5).
   (11) Make sure that the seal (6) is in correct position between the wing bellow (2) and the duct (5).
   (12) Install and tighten the clamp (7).
     (a) Point the clamp (7) for the best tool access, but not close to the OverHeat Detection System (OHDS) or environment.
Subtask 36-11-49-865-249-A ** ON A/C NOT FOR ALL
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENG 1)
49VUAIR BLEED/ENG 1/CTL2HA1D11
122VUAIR BLEED/ENG 1/MONG3HA1Z23
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 2)
49VUAIR BLEED/ENG 2/MONG3HA2D12
122VUAIR BLEED/ENG 2/CTL2HA2Z22
Subtask 36-11-49-720-105-A ** ON A/C NOT FOR ALL
C. Do this test:
   (1) Pressurize the bleed system through the HP ground connector (Ref. AMM TASK 36-12-00-860-803) or with the APU (Ref. AMM TASK 36-12-00-860-802).
   (2) 0n the AIR COND panel 30VU, put the X-BLEED selector switch in the OPEN position.
   (3) If you pressurize the bleed system through the HP ground connector, the supplied pressure 30 psi (2.07 bar) must be stable.
   (4) Make sure that there are no leaks at the junctions of:
  • the duct (3) and the wing bellow (2).
  • and the duct (5) and the wing bellow (2).
NOTE: There are two procedures to do a leak check at the connections of the bleed air ducts (duct joint, flexible connections).
     (a) Soap solution procedure.
  • Leaks are permitted if the WATER - SOAPY SOLUTION stays on the joint line with a continuous series of bubbles. This shows that the leaks are not important.
  • Leaks are not permitted if the air pressure (from the air source) blows the soap solution off the joint line and prevents a continuous series of bubbles.
     (b) Aluminum foil procedure.
NOTE: This procedure is recommended when you do a leak check with hot air.
       1 Wind the FOIL - ALUMINUM on the joint once.
       2 Twist tight the seam of the foil wrap.
       3 Make the foil wrap as tight as possible on the tube but do not rip the wrap.
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.
       4 Attach the foil wrap at the two sides of the pneumatic joint with 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
       5 Do a leak check:
  • You can use the condition of the aluminum foil wraps installed on the pneumatic connections to detect possible leaks. If there is a leak, the aluminum foil wrap will be broken, deformed or have a different color.
   (5) Remove the materials and the foil wrap used to do the leak check.
   (6) Install the insulation muff (1).
     (a) If discarded during removal, install a new insulation muff (1) on the wing bellow (2).
     (b) If not discarded, use again and install the removed insulation muff (1) on the wing bellow (2).
5. Close-up
Subtask 36-11-49-410-230-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Put the aircraft back to its initial configuration.
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) Install the access panels (Ref. AMM TASK 54-53-11-400-804):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
413ET
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
423ET
   (4) On FLAPS panel 114VU:
  • Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever.
   (5) Remove the access platform(s).
   (6) Remove the WARNING NOTICE(S).
Subtask 36-11-49-440-135-A ** ON A/C NOT FOR ALL
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 36-11-49-862-126-A ** ON A/C NOT FOR ALL
C. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002) or (Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 01:11:42 UTC
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