DOC AIRBUS | AMM A320FInstallation of the Optional Interphone Jack Harness [CFML]
TASK 71-51-43-400-803-A
Installation of the Optional Interphone Jack Harness
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 71-51-43-941-075-A
Subtask 71-51-43-420-079-A
(2) Put the washer (5) on the interphone jack harness (4) and put the interphone jack harness (4) through the hole in the support bracket (11).
(3) Install the washer (6) and nut (7) to attach the interphone jack harness (4) to the support bracket (11).
(4) Install the four screws (9) and nuts (3) to attach the receptacle of the interphone jack harness (4) to the support bracket (11).
(5) TORQUE the four nuts (3) to between 0.17 and 0.11 m.daN (15.04 and 9.73 lbf.in )
.
(6) TORQUE the nut (7) to between 0.11 and 0.09 m.daN (9.73 and 7.96 lbf.in ).
(7) Connect the electrical connector (8) of the electrical harness (10) to the receptacle on the interphone jack harness (4) (Ref. AMM TASK 70-70-00-910-804).
5. Close-up
Subtask 71-51-43-410-073-A
[Rev.10 from 2021]
2026.04.02 06:33:27 UTC
Installation of the Optional Interphone Jack Harness
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.
FIN: 4001RJ
1. Reason for the JobNOTE: The Optional Nacelle Interphone Jack does not come standard on the A320neo, but may be ordered as an upgrade to the nacelle package.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-70-00-910-804-A | Electrical Standard Practices |
| TASK 71-13-00-010-803-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-803-A | Closing of the Fan Cowl Doors |
Optional Interphone Jack HarnessSubtask 71-51-43-941-075-A
A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
Subtask 71-51-43-010-092-A (1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:
- The ENG/MODE selector switch
- The ENG/MASTER 1(2) control switch.
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
4. Procedure(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 71-51-43-420-079-A
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.
CAUTION:
USE PLIERS THAT HAVE TEFLON JAWS TO TIGHTEN OR LOOSEN THE ELECTRICAL CONNECTORS. DO NOT USE PLIERS THAT HAVE METAL JAWS. METAL JAWS CAN CAUSE DAMAGE TO THE ELECTRICAL CONNECTORS.
A. Installation of the Interphone Jack Harness NOTE: If necessary, use PLIERS - JAWED, SOFT to disconnect the electrical connectors.
(1) Remove all the COVER - PROTECTION and CAP - PROTECTION from all open connectors and receptacles. (2) Put the washer (5) on the interphone jack harness (4) and put the interphone jack harness (4) through the hole in the support bracket (11).
(3) Install the washer (6) and nut (7) to attach the interphone jack harness (4) to the support bracket (11).
(4) Install the four screws (9) and nuts (3) to attach the receptacle of the interphone jack harness (4) to the support bracket (11).
(5) TORQUE the four nuts (3) to between 0.17 and 0.11 m.daN (15.04 and 9.73 lbf.in )
. (6) TORQUE the nut (7) to between 0.11 and 0.09 m.daN (9.73 and 7.96 lbf.in )
. (7) Connect the electrical connector (8) of the electrical harness (10) to the receptacle on the interphone jack harness (4) (Ref. AMM TASK 70-70-00-910-804).
Subtask 71-51-43-410-073-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(4) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(4) Remove the WARNING NOTICE(S).