DOC AIRBUS | AMM A320FInstallation of the Engine Exhaust Cone [IAE]
TASK 78-11-12-400-010-A
Installation of the Engine Exhaust Cone
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 78-11-12-860-051-A ** ON A/C NOT FOR ALL
Subtask 78-11-12-420-051-A ** ON A/C NOT FOR ALL
Subtask 78-11-12-440-050-A ** ON A/C NOT FOR ALL Subtask 78-11-12-410-051-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:01:22 UTC
Installation of the Engine Exhaust Cone
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobNOTE: For interchangeability see Goodrich AOL-V2500-09-002.
2. Job Set-up InformationA. 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 130 and 120 lbf.in (1.47 and 1.36 m.daN )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-076) | Methyl Ethyl Ketone, Technical grade |
| (Material No.V10-094) | anti-seize compound |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-23-11-911-013-A | General Torque Tightening Techniques |
| TASK 71-13-00-010-010-A | Opening of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 71-13-00-410-010-A | Closing of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 78-30-00-040-012-A | Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance |
| TASK 78-30-00-440-012-A | Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance |
Engine Exhaust ConeSubtask 78-11-12-860-051-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is 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) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 78-11-12-010-052-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is 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) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
B. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 78-11-12-040-051-A ** ON A/C NOT FOR ALL (1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
C. Make Sure That the Thrust Reverser are Deactivated:
4. ProcedureWARNING:
MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
(1) Make sure that the thrust reverser Hydraulic-Control-Unit (HCU) is deactivated (Ref. AMM TASK 78-30-00-040-012). Subtask 78-11-12-420-051-A ** ON A/C NOT FOR ALL
A. Install the Exhaust Cone
(1) Put the exhaust cone (2) in position on the engine flange.
(2) Clean components:
(a) Clean the engine exhaust cone attaching bolts (1) withV01-076 Methyl Ethyl Ketone, Technical grade
(b) Apply anti-seize compound (Material No.V10-094) to the engine exhaust cone attaching bolts (1).
(3) Install the 13 bolts (1). Do not torque the bolts until they are all installed.
(4) TORQUE the bolts to between 130 and 120 lbf.in (1.47 and 1.36 m.daN ) in sequence (Ref. AMM TASK 70-23-11-911-013):
(a) Torque the bolts in opposite pairs. Start with the first pair just above the horizontal on the left and right side of the exhaust cone,
(b) Move clockwise to the next pair of bolts,
(c) Do this procedure until all the bolts have been tightened.
5. Close-up(1) Put the exhaust cone (2) in position on the engine flange.
(2) Clean components:
(a) Clean the engine exhaust cone attaching bolts (1) with
(b) Apply anti-seize compound (Material No.V10-094) to the engine exhaust cone attaching bolts (1).
(3) Install the 13 bolts (1). Do not torque the bolts until they are all installed.
(4) TORQUE the bolts to between 130 and 120 lbf.in (1.47 and 1.36 m.daN )
in sequence (Ref. AMM TASK 70-23-11-911-013): (a) Torque the bolts in opposite pairs. Start with the first pair just above the horizontal on the left and right side of the exhaust cone,
(b) Move clockwise to the next pair of bolts,
(c) Do this procedure until all the bolts have been tightened.
Subtask 78-11-12-440-050-A ** ON A/C NOT FOR ALL Subtask 78-11-12-410-051-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) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(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).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(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).