W DOC AIRBUS | AMM A320F

Installation of the High-Pressure Tee Duct

TASK 36-11-49-400-044-A
Installation of the High-Pressure Tee Duct

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 1M (3 FT)-ADJUSTABLE
No specific
AR
FOIL - ALUMINUM
No specific
AR
WARNING NOTICE(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP3010)
dry developer
(Material No.CP8004)
lockwire 0.6 mm (0.0236 in.) dia
(Material No.08CKB9)
Cleaner-Hydraulic Spillage Absorbent powder -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
5
E-SEALS
AIPC 36-11-49-01-160
25
E-SEALS
AIPC 36-11-51-02-025
 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 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
TASK 49-00-00-860-006-A
APU Shutdown by External Power
TASK 49-00-00-860-006-A-01
APU Shutdown by Batteries
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 70-51-00-230-002-A
Fluorescent-Penetrant Inspection-Portable-Water Washable
TASK 71-00-00-710-003-B
Engine Automatic Start
TASK 71-00-00-710-004-B
Engine Manual Start
TASK 71-00-00-710-028-B
Engine Shutdown
TASK 71-13-00-010-040-B
Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B
Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-B
Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B
Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B
Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B
Closing of the Thrust Reverser Doors
F High Pressure (HP) Tee Duct
3. Job Set-up
Subtask 36-11-49-860-061-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) Make sure that engine 1(2) is shutdown for a minimum of 5 minutes before you do this procedure.
   (3) In the cockpit, on AIR COND panel 30VU:
     (a) Make sure that the ENG 1(2) BLEED pushbutton-switch is released (the OFF legend is on).
     (b) Make sure that the APU BLEED pushbutton-switch is released (the ON legend is off).
     (c) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to operate the pneumatic system.
   (4) In the cockpit, on ENG panel 115VU:
     (a) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to start engine 1(2).
   (5) 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.
   (6) On the ENG section of maintenance panel 50VU:
     (a) Make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton-switch is off.
     (b) Make sure that the WARNING NOTICE(S) is(are) in position to tell persons not to energize FADEC 1(2).
   (7) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position below the engine.
Subtask 36-11-49-010-076-A ** ON A/C NOT FOR ALL
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 thrust reverser doors are open (Ref. AMM TASK 78-36-00-010-040):
     (a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
     (b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 36-11-49-040-060-A ** ON A/C NOT FOR ALL
C. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 36-11-49-865-057-A ** ON A/C NOT FOR ALL
D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/CTL3HA1D12
49VUAIR BLEED/ENG 1/MONG2HA1D11
122VUAIR BLEED/ENG 2/CTL3HA2Z23
122VUAIR BLEED/ENG 2/MONG2HA2Z22
4. Procedure
Subtask 36-11-49-420-052-A ** ON A/C NOT FOR ALL
A. Installation of the High Pressure (HP) Tee Duct
   (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).
   (3) Remove the blanking plugs from the HP tee duct (15), the upper HP duct, the HP bleed valve (20) and the lower HP duct.
   (4) Loosely install the HP tee duct (15) between the upper HP duct, the HP regulator valve (20) and the lower HP duct.
   (5) Attach the HP tee duct (15) to the upper HP duct with a serviceable AIPC 36-11-49-01-160 E-SEALS (5) and the coupling (10).
   (6) Attach the HP tee duct (15) to the HP bleed valve (20) with a serviceable AIPC 36-11-51-02-025 E-SEALS (25) and the coupling (30).
   (7) Attach the HP tee duct (15) to the lower HP duct with a serviceable AIPC 36-11-49-01-160 E-SEALS (5) and the coupling (10).
CAUTION: MAKE SURE THE SMOOTH CIRCULAR SURFACE OF THE COUPLING IS RADIALLY OUTBOARD FROM THE ENGINE. DO NOT LET THE COUPLING TOUCH ENGINE COMPONENTS OR STRUCTURE. DAMAGE TO THE COMPONENTS OR STRUCTURE COULD OCCUR.
   (8) Tighten the nuts of the couplings sufficiently to hold the duct in its position. Do not torque the coupling nuts at this time.
   (9) Make sure that the HP tee duct (15) is in the correct position.
   (10) TORQUE the coupling nuts, as follows:
     (a) TORQUE the coupling nut to the value shown on the coupling.
     (b) Tap the perimeter of the coupling with a fiber hammer, then torque the coupling nut again.
     (c) Do the torque procedure two times, then torque the coupling nut again.
Subtask 36-11-49-480-053-A ** ON A/C NOT FOR ALL
B. Preparation for the Leak Test
   (1) Find the location of a pneumatic joint air-leak with one of the two procedures that follow:
     (a) Apply Cleaner-Hydraulic Spillage Absorbent powder - (Material No.08CKB9) or dry developer (Material No.CP3010) (Ref. AMM TASK 70-51-00-230-002) around the pneumatic joints, only on the connections of the removed pneumatic components.
NOTE: Airbus recommends that you do not apply dry developer on all the pneumatic components.
     (b) Install an FOIL - ALUMINUM around the pneumatic joint locations:
       1 Wind the foil wrap around the joint one time.
       2 Twist the seam of the foil wrap to make it tight.
       3 Make the foil wrap as tight as possible on the tube but do not cause damage to 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 with a CP8004lockwire 0.6 mm (0.0236 in.) dia on the two sides of the pneumatic joint.
Subtask 36-11-49-410-121-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the left thrust reverser door (Ref. AMM TASK 78-36-00-410-040):
     (a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
     (b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 36-11-49-440-083-A ** ON A/C NOT FOR ALL
D. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 36-11-49-865-136-A ** ON A/C NOT FOR ALL
E. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/CTL3HA1D12
49VUAIR BLEED/ENG 1/MONG2HA1D11
122VUAIR BLEED/ENG 2/CTL3HA2Z23
122VUAIR BLEED/ENG 2/MONG2HA2Z22
Subtask 36-11-49-860-078-A ** ON A/C NOT FOR ALL
F. Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
Subtask 36-11-49-720-057-A ** ON A/C NOT FOR ALL
G. Do this Test
   (1) on the ECAM control panel 11VU, push the BLEED key (on the lower ECAM DU, the BLEED page comes into view).
   (2) On the lower ECAM DU, on the BLEED page:
  • Make sure that the related HP bleed valve is shown closed.
   (3) Start the related engine with the automatic or manual start procedure (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004) and keep it at idle.
   (4) On the AIR COND panel 30VU:
  • Push the ENG 1(2) BLEED pushbutton switch (OFF legend goes off).
   (5) After 5 minutes, on the lower ECAM DU, on the BLEED page:
  • Make sure that the related HP bleed valve is shown open.
   (6) Stop the engine (Ref. AMM TASK 71-00-00-710-028).
Subtask 36-11-49-040-107-A ** ON A/C NOT FOR ALL
H. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 36-11-49-010-142-A ** ON A/C NOT FOR ALL
I. Open the left thrust reverser doors (Ref. AMM TASK 78-36-00-010-040).
   (1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
   (2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 36-11-49-080-053-A ** ON A/C NOT FOR ALL
J. Make sure that there are no leaks at the junction between the HP bleed valve and the duct on the related engine.
NOTE: There is a leak when the foil installed on the duct breaks or when it is too hot.
There is a leak when the leak air removes the dry developer from the junction.
   (1) Remove the materials used to do the leak test.
5. Close-up
Subtask 36-11-49-860-084-A ** ON A/C NOT FOR ALL
A. Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
Subtask 36-11-49-865-058-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
49VUAIR BLEED/ENG 1/CTL3HA1D12
49VUAIR BLEED/ENG 1/MONG2HA1D11
122VUAIR BLEED/ENG 2/CTL3HA2Z23
122VUAIR BLEED/ENG 2/MONG2HA2Z22
Subtask 36-11-49-410-052-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the thrust reverser cowl doors (Ref. AMM TASK 78-36-00-410-040):
     (a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
     (b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
   (3) Remove the access platform(s).
Subtask 36-11-49-440-061-A ** ON A/C NOT FOR ALL
D. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 36-11-49-410-084-A ** ON A/C NOT FOR ALL
E. Close Access
   (1) 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
   (2) Remove the WARNING NOTICE(S).
Subtask 36-11-49-862-057-A ** ON A/C NOT FOR ALL
F. 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 01:10:30 UTC
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