DOC AIRBUS | AMM A320FRemoval of the CJ13 Harness [CFMI]
TASK 73-21-50-000-005-A
Removal of the CJ13 Harness
1. Reason for the Job
This harness is connected to the J13 harness (in the 6 o'clock junction box), the T495 main junction box, the T3 temperature sensor, the T5 temperature sensor and 2 High Pressure Turbine (HPT) case temperature sensors.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 73-21-50-941-054-A ** ON A/C NOT FOR ALL
Subtask 73-21-50-020-096-B ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:04:59 UTC
Removal of the CJ13 Harness
1. Reason for the Job
This harness is connected to the J13 harness (in the 6 o'clock junction box), the T495 main junction box, the T3 temperature sensor, the T5 temperature sensor and 2 High Pressure Turbine (HPT) case temperature sensors.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | CAP - BLANKING |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-040-A | Opening of the Fan Cowl Doors |
| TASK 78-30-00-481-041-A | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-36-00-010-040-A | Opening of the Thrust Reverser Doors |
CJ13 HarnessSubtask 73-21-50-941-054-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 73-21-50-010-054-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 73-21-50-040-058-A ** ON A/C NOT FOR ALL Subtask 73-21-50-010-074-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
D. Open the 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
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 73-21-50-020-096-B ** ON A/C NOT FOR ALL
A. Removal of the CJ13 Harness
(1) Disconnect the electrical harness from the T495 main junction box, the T3 temperature sensor, the T5 temperature sensor and the 2 HPT case temperature sensors.
PRE CFM SB 72-076
(2) Disconnect the J13 harness from the CJ13 harness receptacle in the 6 o'clock junction box. Remove the nut which attaches the receptacle (detail A). Remove O-ring (41).
END OF PRE CFM SB 72-076
POST CFM SB 72-076
(3) Disconnect the J13 harness from the CJ13 harness receptacle in the 6 o'clock junction box. Remove the nut (40) which attaches the receptacle (detail A). Remove lockwasher (42). Remove O-ring (41).
END OF POST CFM SB 72-076
(4) Remove the bolts and nuts which attach the 4 harness clamps to the brackets between the main harness junction box and the T3 sensor connector (details F, H and S).
PRE CFM SB 72-019
(5) Remove the bolts (49) and nuts (51) which attach the harness clamps to the bracket (detail G).
END OF PRE CFM SB 72-019
POST CFM SB 72-019
(6) Remove the bolts (49) which attach the harness clamps to the bracket (detail G).
END OF POST CFM SB 72-019
PRE CFM SB 73-0129
(7) Remove the bolts and nuts which attach the 4 harness clamps to the brackets between the main harness junction box and the T495 sensor connector and the Higth Pressure Turbine Active Clearance Control (HPTACC) sensor connector at the 9 o'clock location (details J, K, L and M).
END OF PRE CFM SB 73-0129
POST CFM SB 73-0129
(8) Remove the bolts and nuts which attach the 3 harness clamps to the brackets between the main harness junction box and the T495 sensor connector at the 9 o'clock location (details J, L and M).
END OF POST CFM SB 73-0129
PRE CFM SB 72-169
(9) Not applicable.
END OF PRE CFM SB 72-169
POST CFM SB 72-169
(10) Keep the spacer (detail J), configuration 2.
END OF POST CFM SB 72-169
(11) Keep the spacer (64) (detail M), configuration 2.
POST CFM SB 72-060 or POST CFM SB 72-065
(12) Not applicable.
END OF POST CFM SB 72-060 or POST CFM SB 72-065
(13) Remove the bolts and nuts which attach the 4 harness clamps to the bracket between the main harness junction box and the T5 sensor connector and HPTCC connector at the 3 o'clock location (details N, T, P and Q). Keep the spacer (detail N).
(14) Remove the bolt (80) which attaches the harness clamp to the bracket between the main harness junction box and the 6 o'clock junction box connector (detail R).
(15) Remove the bolts which attach the 4 harness junction boxes to the brackets (details B, C, D and E).
(16) Carefully remove the CJ13 harness.
(17) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(18) Remove all the clamps from the harness.
(1) Disconnect the electrical harness from the T495 main junction box, the T3 temperature sensor, the T5 temperature sensor and the 2 HPT case temperature sensors.
PRE CFM SB 72-076
(2) Disconnect the J13 harness from the CJ13 harness receptacle in the 6 o'clock junction box. Remove the nut which attaches the receptacle (detail A). Remove O-ring (41).
END OF PRE CFM SB 72-076
POST CFM SB 72-076
(3) Disconnect the J13 harness from the CJ13 harness receptacle in the 6 o'clock junction box. Remove the nut (40) which attaches the receptacle (detail A). Remove lockwasher (42). Remove O-ring (41).
END OF POST CFM SB 72-076
(4) Remove the bolts and nuts which attach the 4 harness clamps to the brackets between the main harness junction box and the T3 sensor connector (details F, H and S).
PRE CFM SB 72-019
(5) Remove the bolts (49) and nuts (51) which attach the harness clamps to the bracket (detail G).
END OF PRE CFM SB 72-019
POST CFM SB 72-019
(6) Remove the bolts (49) which attach the harness clamps to the bracket (detail G).
END OF POST CFM SB 72-019
PRE CFM SB 73-0129
(7) Remove the bolts and nuts which attach the 4 harness clamps to the brackets between the main harness junction box and the T495 sensor connector and the Higth Pressure Turbine Active Clearance Control (HPTACC) sensor connector at the 9 o'clock location (details J, K, L and M).
END OF PRE CFM SB 73-0129
POST CFM SB 73-0129
(8) Remove the bolts and nuts which attach the 3 harness clamps to the brackets between the main harness junction box and the T495 sensor connector at the 9 o'clock location (details J, L and M).
END OF POST CFM SB 73-0129
PRE CFM SB 72-169
(9) Not applicable.
END OF PRE CFM SB 72-169
POST CFM SB 72-169
(10) Keep the spacer (detail J), configuration 2.
END OF POST CFM SB 72-169
(11) Keep the spacer (64) (detail M), configuration 2.
POST CFM SB 72-060 or POST CFM SB 72-065
(12) Not applicable.
END OF POST CFM SB 72-060 or POST CFM SB 72-065
(13) Remove the bolts and nuts which attach the 4 harness clamps to the bracket between the main harness junction box and the T5 sensor connector and HPTCC connector at the 3 o'clock location (details N, T, P and Q). Keep the spacer (detail N).
(14) Remove the bolt (80) which attaches the harness clamp to the bracket between the main harness junction box and the 6 o'clock junction box connector (detail R).
(15) Remove the bolts which attach the 4 harness junction boxes to the brackets (details B, C, D and E).
(16) Carefully remove the CJ13 harness.
(17) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(18) Remove all the clamps from the harness.