DOC AIRBUS | AMM A320FInstallation of the Electrical Harness from the Pylon to the Environmental Control System (ECS) Valves [CFML]
TASK 71-52-43-400-804-A
Installation of the Electrical Harness from the Pylon to the Environmental Control System (ECS) Valves
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 71-52-43-941-057-A
Subtask 71-52-43-420-063-A
Subtask 71-52-43-410-073-A
[Rev.10 from 2021]
2026.04.01 06:38:56 UTC
Installation of the Electrical Harness from the Pylon to the Environmental Control System (ECS) Valves
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:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CPNCL00062) | LUBRICATING OIL TURBINE ENGINE SYNT BASE |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR, 462AR | |
| 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 |
| TASK 73-29-00-710-802-A | FADEC Test (Menu Mode) |
| TASK 78-30-00-040-807-A | Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU) |
| TASK 78-30-00-440-807-A | Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU) |
| TASK 78-36-00-010-806-A | Opening of the Thrust Reverser Cowl Doors |
| TASK 78-36-00-410-806-A | Closing of the Thrust Reverser Cowl Doors |
Electrical Harness from the Pylon to the Environmental Control System (ECS) ValvesSubtask 71-52-43-941-057-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 71-52-43-010-089-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 2M (6 FT) - ADJUSTABLE is in position.
Subtask 71-52-43-040-074-A (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 2M (6 FT) - ADJUSTABLE is in position.
C. Deactivation of the Thrust Reverser System for Maintenance
Subtask 71-52-43-010-090-A WARNING:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
(1) Make sure that you did the deactivation of the thrust reverser system for nacelle maintenance (Ref. AMM TASK 78-30-00-040-807). D. Get Access
(1) Make sure that the right thrust-reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
4. Procedure(1) Make sure that the right thrust-reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
Subtask 71-52-43-420-063-A
A. Installation of the Electrical Harness (5) from the Pylon to the Environment Control System (ECS) Valve
(1) Remove all COVER - PROTECTION and CAP - PROTECTION from the openings, tubes, hoses and connectors.
(2) Lubricate the threads of the bolts (4), bolts (13) and screws (16) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(3) Put the P-clamps (6) and (11) on the harness (5). Use the record made during the removal procedure to help get the correct location and position.
(4) Put the harness in position on the engine. Use the record made during the removal procedure to help get the correct routing.
(5) Connect the electrical connections as follows (Ref. AMM TASK 70-70-00-910-804):
(a) Connect the electrical connector (2) to the receptacle on the High Pressure Valve (HPV) (1).
(b) Connect the electrical connector (7) to the receptacle on the Pressure Relief Valve (PRV) (8).
(c) Connect the electrical connector (18) to the receptacle on the pylon interface (19).
(6) Attach the harness (5) to the engine at two locations as follows:
(a) Loosely install the bolt (4) and the P-clamp (6) on the support bracket (3).
(b) Loosely install the bolt (13) and the P-clamp (11) on the support bracket (12).
(7) Install the harness into the spring clips on the support brackets (3), (9), (10) and (12).
(8) Adjust the tension in the harness along the routing. Make sure that the harness (5) does not touch the adjacent parts.
(9) Install the harness (5) at the fire seal (17) as follows:
(a) Put the harness (5) in position in the fire seal (17).
(b) Put the outboard half of the fire seal (17) in position.
(c) Install the pylon cover (15) and the four screws (16) in position on the outboard half of the fire seal (17).
(d) TORQUE the screws (16) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
.
(10) TORQUE the bolt (13) and the bolt (4) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in ).
Subtask 71-52-43-710-051-A 5. Close-up(1) Remove all COVER - PROTECTION and CAP - PROTECTION from the openings, tubes, hoses and connectors.
(2) Lubricate the threads of the bolts (4), bolts (13) and screws (16) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(3) Put the P-clamps (6) and (11) on the harness (5). Use the record made during the removal procedure to help get the correct location and position.
(4) Put the harness in position on the engine. Use the record made during the removal procedure to help get the correct routing.
(5) Connect the electrical connections as follows (Ref. AMM TASK 70-70-00-910-804):
(a) Connect the electrical connector (2) to the receptacle on the High Pressure Valve (HPV) (1).
(b) Connect the electrical connector (7) to the receptacle on the Pressure Relief Valve (PRV) (8).
(c) Connect the electrical connector (18) to the receptacle on the pylon interface (19).
(6) Attach the harness (5) to the engine at two locations as follows:
(a) Loosely install the bolt (4) and the P-clamp (6) on the support bracket (3).
(b) Loosely install the bolt (13) and the P-clamp (11) on the support bracket (12).
(7) Install the harness into the spring clips on the support brackets (3), (9), (10) and (12).
(8) Adjust the tension in the harness along the routing. Make sure that the harness (5) does not touch the adjacent parts.
(9) Install the harness (5) at the fire seal (17) as follows:
(a) Put the harness (5) in position in the fire seal (17).
(b) Put the outboard half of the fire seal (17) in position.
(c) Install the pylon cover (15) and the four screws (16) in position on the outboard half of the fire seal (17).
(d) TORQUE the screws (16) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in )
. (10) TORQUE the bolt (13) and the bolt (4) to between 0.43 and 0.36 m.daN (38.05 and 31.86 lbf.in )
. Subtask 71-52-43-410-073-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
Subtask 71-52-43-440-061-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
B. Do the reactivation of the thrust reverser system after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).
Subtask 71-52-43-410-074-A