DOC AIRBUS | AMM A320FInstallation of the Starter Valve Elbow-Duct and the Precooler Exchanger Tee-Duct in the Pylon
TASK 36-11-49-400-015-A
Installation of the Starter Valve Elbow-Duct and the Precooler Exchanger Tee-Duct in the Pylon
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Expendable Parts
D. Referenced Information
3. Job Set-up
Subtask 36-11-49-860-096-B ** ON A/C NOT FOR ALL
Subtask 36-11-49-420-100-A ** ON A/C NOT FOR ALL
Subtask 36-11-49-410-137-B ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:38:40 UTC
Installation of the Starter Valve Elbow-Duct and the Precooler Exchanger Tee-Duct in the Pylon
WARNING:
MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.
CAUTION:
USE A SECOND WRENCH TO APPLY COUNTER TORQUE TO THE UNION ON THE VALVE WHEN YOU CONNECT THE HP SENSE TUBE.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 411AT, 413AL, 413AR, 413BL, 413BR, 421AT, 423AL, 423AR, 423BL, 423BR |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 11 | SEAL | AIPC 36-11-06-02-060 |
| 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 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)) |
Starter Valve Elbow-Duct and Precooler Exchanger Tee-Duct in the PylonSubtask 36-11-49-860-096-B ** 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 control 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 control 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 the 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 4M (13 FT)-ADJUSTABLE is in position below the engine.
(8) Make sure that these access panels are removed:
(a) For the left pylon: 411AT 413AL 413BL 413AR 413BR
(b) For the right pylon: 421AT 423AL 423BL 423AR 423BR.
4. Procedure(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 control 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 control 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 the 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 4M (13 FT)-ADJUSTABLE is in position below the engine.
(8) Make sure that these access panels are removed:
(a) For the left pylon: 411AT 413AL 413BL 413AR 413BR
(b) For the right pylon: 421AT 423AL 423BL 423AR 423BR.
Subtask 36-11-49-420-100-A ** ON A/C NOT FOR ALL
A. Installation of the Starter Valve Elbow-Duct and the Precooler Exchanger Tee-Duct in the Pylon
(1) If you use the APU to energize the electrical circuits, stop the APU:
(a) Make sure that the pressure and the temperature of the bleed-air duct system are in ambient conditions.
(4) Do an inspection of the component interfaces and the adjacent area.
(5) Remove the PLUG-BLANKING from each disconnected line end.
(6) Install the starter valve elbow-duct as follows:
(a) Put a new AIPC 36-11-06-02-060 SEAL (11) in the slot of the duct (10).
(b) Put the duct (10) and the support (8) in position in the pylon.
1 Make sure that the arrow should point down which shows the direction of the flow of air.
(d) Install the screws (6) and the washers (7) on the support (8) and tighten the screws (6).
(7) Install the precooler exchanger tee-duct as follows:
(a) Put the tee-duct (1) in position in the pylon.
1 Make sure that the arrow should point up which shows the direction of the flow of air.
(b) Install the screws (3) and the washers (2) on the tee-duct (1) and tighten the screws (3).
(c) Install the clamps as follows:
a TORQUE the clamp (4) to between 1.35 and 1.24 m.daN (119.47 and 109.73 lbf.in )
.
b TORQUE the clamps (5) and (12) to between 0.9 and 0.78 m.daN (79.65 and 69.03 lbf.in ).
c Tighten the clamp (9) sufficiently to hold the duct in position.
Subtask 36-11-49-720-075-A ** ON A/C NOT FOR ALL (1) If you use the APU to energize the electrical circuits, stop the APU:
- For GTCP 36-300 APU (Ref. AMM D/O 49-00-00-86)
- For APS 3200 APU (Ref. AMM D/O 49-00-00-86)
- For 131-9(A) APU (Ref. AMM TASK 49-00-00-860-009).
(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) Clean the component interfaces and the adjacent area.(4) Do an inspection of the component interfaces and the adjacent area.
(5) Remove the PLUG-BLANKING from each disconnected line end.
(6) Install the starter valve elbow-duct as follows:
(a) Put a new AIPC 36-11-06-02-060 SEAL (11) in the slot of the duct (10).
(b) Put the duct (10) and the support (8) in position in the pylon.
1 Make sure that the arrow should point down which shows the direction of the flow of air.
CAUTION:
MAKE SURE THAT THE SCREWS OF THE ATTACHMENT CLAMPS ON THE OVERPRESSURE VALVE ARE IN THE CORRECT POSITION.
IF NOT, THE SCREWS CAN CAUSE DAMAGE TO THE FIREWALL OF THE THRUST REVERSER COWL.
(c) Install the clamp (9) on the duct (10) but do not fully tighten it. (d) Install the screws (6) and the washers (7) on the support (8) and tighten the screws (6).
(7) Install the precooler exchanger tee-duct as follows:
(a) Put the tee-duct (1) in position in the pylon.
1 Make sure that the arrow should point up which shows the direction of the flow of air.
(b) Install the screws (3) and the washers (2) on the tee-duct (1) and tighten the screws (3).
(c) Install the clamps as follows:
CAUTION:
MAKE SURE THAT THE SCREWS OF THE ATTACHMENT CLAMPS ON THE OVERPRESSURE VALVE ARE IN THE CORRECT POSITION.
IF NOT, THE SCREWS CAN CAUSE DAMAGE TO THE FIREWALL OF THE THRUST REVERSER COWL.
1 Put the clamps (4) and (5) in position on the tee-duct (1). CAUTION:
MAKE SURE THAT THE SCREWS OF THE ATTACHMENT CLAMPS ON THE OVERPRESSURE VALVE ARE IN THE CORRECT POSITION.
IF NOT, THE SCREWS CAN CAUSE DAMAGE TO THE FIREWALL OF THE THRUST REVERSER COWL.
2 Put the clamps (4) and (5) in position on the tee-duct (1). a TORQUE the clamp (4) to between 1.35 and 1.24 m.daN (119.47 and 109.73 lbf.in )
. b TORQUE the clamps (5) and (12) to between 0.9 and 0.78 m.daN (79.65 and 69.03 lbf.in )
. c Tighten the clamp (9) sufficiently to hold the duct in position.
B. Do this test
(1) Remove the warning notice from the HP ground connector.
(2) Connect an air source to the HP ground connector.
(3) On the AIR COND control panel 30VU, set the X BLEED selector to OPEN.
(4) Supply a stable pressure of 2.07 bar (30 psi) to the HP ground connector.
(5) Make sure that there are no leaks at the connections of the ducts on the related engine.
5. Close-up(1) Remove the warning notice from the HP ground connector.
(2) Connect an air source to the HP ground connector.
(3) On the AIR COND control panel 30VU, set the X BLEED selector to OPEN.
(4) Supply a stable pressure of 2.07 bar (30 psi) to the HP ground connector.
(5) Make sure that there are no leaks at the connections of the ducts on the related engine.
Subtask 36-11-49-410-137-B ** 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) Install these access panels:
(4) Remove the WARNING NOTICE(S).
Subtask 36-11-49-862-088-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install these access panels:
- For the left pylon: 411AT 413AL 413BL 413AR 413BR
- For the right pylon: 421AT 423AL 423BL 423AR 423BR.
(4) Remove the WARNING NOTICE(S).
B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002) or (Ref. AMM TASK 24-41-00-862-002).
(Ref. AMM TASK 24-41-00-862-002) or (Ref. AMM TASK 24-41-00-862-002).