DOC AIRBUS | AMM A320FReplace the Data Entry Plug Backshell Assembly - VRS3503 [IAE]
TASK 73-22-35-300-012-A
Replace the Data Entry Plug Backshell Assembly - VRS3503
1. Reason for the Job
This task gives the procedure to replace the data entry plug backshell assembly.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 73-22-35-941-054-A ** ON A/C NOT FOR ALL
Subtask 73-22-35-020-054-A ** ON A/C NOT FOR ALL
Subtask 73-22-35-410-058-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 13:06:10 UTC
Replace the Data Entry Plug Backshell Assembly - VRS3503
1. Reason for the Job
This task gives the procedure to replace the data entry plug backshell assembly.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | BAG - PLASTIC |
| No specific | AR | CAP - PROTECTION |
| No specific | AR | VIBRATING PEEN EQUIPMENT |
| No specific | AR | WARNING NOTICE(S) |
| No specific | AR | WRENCH - STRAP |
| No specific | Torque wrench: range to between 35.2 and 28.8 lbf.in (0.40 and 0.33 m.daN )  | |
| No specific | Torque wrench: range to between 58 and 53 lbf.in (0.66 and 0.60 m.daN ) | |
| IAE1P16271 | 2 | FIXTURE-HOLDING |
| IAE1R19416 | 2 | WRENCH-SPECIAL 4 AND 8 SLOT CONNECTOR, LIFTING |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V02-138) | lockwire |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 1 | BACKSHELL ASSEMBLY | AIPC 73-22-35-80-050 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-23-11-911-013-A | General Torque Tightening Techniques |
| TASK 70-23-15-912-010-A | Connection of Electrical Connectors |
| TASK 70-40-11-911-014-A | Locking Devices General Information |
| 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 73-22-34-710-040-A | Operational Test of the EEC |
Data Entry Plug AssemblySubtask 73-22-35-941-054-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 73-22-35-010-054-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 cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
Subtask 73-22-35-010-060-A ** ON A/C NOT FOR ALL (1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
C. Disconnect the Data Entry Plug (DEP) from the Electronic Engine Control (EEC).
(1) Disconnect the DEP (1) from the EEC (2) connector with the IAE1R19416 WRENCH-SPECIAL 4 AND 8 SLOT CONNECTOR, LIFTING.
(2) Install a CAP - PROTECTION on to the EEC connector to give protection from unwanted fluids or materials.
4. Procedure(1) Disconnect the DEP (1) from the EEC (2) connector with the IAE1R19416 WRENCH-SPECIAL 4 AND 8 SLOT CONNECTOR, LIFTING.
(2) Install a CAP - PROTECTION on to the EEC connector to give protection from unwanted fluids or materials.
Subtask 73-22-35-020-054-A ** ON A/C NOT FOR ALL
A. Remove the backshell assembly from the data entry plug assembly.
(1) Remove and discard the lockwire from the backshell assembly (1).
(2) Install the data entry plug assembly on to the IAE1P16271 FIXTURE-HOLDING as follows:
(a) Align the main key (3) on the data entry plug connector (4) with the holding fixture receptacle main key-way (7).
(b) Use light hand pressure to engage the data entry plug assembly with the holding fixture receptable and tighten it by hand.
(3) Remove the backshell assembly (1) from the data entry plug connector. Use a strap wrench, TG70 or equivalent, to loosen the backshell nut (6).
(4) Remove the anti-vibration rubber (2) from the jumper ends(s) (5) or the backshell assembly (1).
(5) Remove the data entry plug connector (4) from the fixture.
Subtask 73-22-35-350-053-A ** ON A/C NOT FOR ALL (1) Remove and discard the lockwire from the backshell assembly (1).
(2) Install the data entry plug assembly on to the IAE1P16271 FIXTURE-HOLDING as follows:
(a) Align the main key (3) on the data entry plug connector (4) with the holding fixture receptacle main key-way (7).
(b) Use light hand pressure to engage the data entry plug assembly with the holding fixture receptable and tighten it by hand.
(3) Remove the backshell assembly (1) from the data entry plug connector. Use a strap wrench, TG70 or equivalent, to loosen the backshell nut (6).
(4) Remove the anti-vibration rubber (2) from the jumper ends(s) (5) or the backshell assembly (1).
(5) Remove the data entry plug connector (4) from the fixture.
B. Identify the new backshell assembly
(1) Mark the PART No., CLASS No., RATING No., BUMP No., EPR MOD. No. and ENG. S/N on a new backshell assembly with the same data as given on the removed backshell assembly. Use the VIBRATING PEEN EQUIPMENT method.
Subtask 73-22-35-210-053-A ** ON A/C NOT FOR ALL (1) Mark the PART No., CLASS No., RATING No., BUMP No., EPR MOD. No. and ENG. S/N on a new backshell assembly with the same data as given on the removed backshell assembly. Use the VIBRATING PEEN EQUIPMENT method.
C. Examine the repair.
(1) Examine the backshell assembly for damage.
(2) Make sure that the data given on the new backshell assembly agrees with the data given on the removed backshell assembly.
(3) Discard the removed backshell assembly.
Subtask 73-22-35-420-054-A ** ON A/C NOT FOR ALL (1) Examine the backshell assembly for damage.
(2) Make sure that the data given on the new backshell assembly agrees with the data given on the removed backshell assembly.
(3) Discard the removed backshell assembly.
D. Install the backshell assembly on to the data entry plug connector.
(1) Install the data entry plug connector (4) on to the IAE1P16271 FIXTURE-HOLDING.
(a) Align the main key (3) on the data entry plug connector (4) with the holding ficture receptacle main key-way (7).
(b) Use light hand pressure to engage the data entry plug connector (4) with the holding fixture receptacle and tighten it by hand.
(2) Align and install the anti-vibration rubber (2) on the jumper end(s) (5) of the data entry plug connector (4) or in to the backshell assembly (1).
(3) Install the AIPC 73-22-35-80-050 BACKSHELL ASSEMBLY (1) on to the connector (4) and tighten the backshell nut (6) by hand.
(4) TORQUE the backshell nut (6) to between 58 and 53 lbf.in (0.66 and 0.60 m.daN ). Use a WRENCH - STRAP or equivalent (Ref. AMM TASK 70-23-11-911-013).
(5) Safety the backshell assembly (1) to the backshell nut (6) with lockwire (Material No.V02-138) (Ref. AMM TASK 70-40-11-911-014).
(6) Remove the data entry plug assembly from the holding fixture.
(7) Install a CAP - PROTECTION or a BAG - PLASTIC on to the data entry plug assembly.
5. Close-up(1) Install the data entry plug connector (4) on to the IAE1P16271 FIXTURE-HOLDING.
(a) Align the main key (3) on the data entry plug connector (4) with the holding ficture receptacle main key-way (7).
(b) Use light hand pressure to engage the data entry plug connector (4) with the holding fixture receptacle and tighten it by hand.
(2) Align and install the anti-vibration rubber (2) on the jumper end(s) (5) of the data entry plug connector (4) or in to the backshell assembly (1).
(3) Install the AIPC 73-22-35-80-050 BACKSHELL ASSEMBLY (1) on to the connector (4) and tighten the backshell nut (6) by hand.
(4) TORQUE the backshell nut (6) to between 58 and 53 lbf.in (0.66 and 0.60 m.daN )
. Use a WRENCH - STRAP or equivalent (Ref. AMM TASK 70-23-11-911-013). (5) Safety the backshell assembly (1) to the backshell nut (6) with lockwire (Material No.V02-138) (Ref. AMM TASK 70-40-11-911-014).
(6) Remove the data entry plug assembly from the holding fixture.
(7) Install a CAP - PROTECTION or a BAG - PLASTIC on to the data entry plug assembly.
Subtask 73-22-35-410-058-A ** ON A/C NOT FOR ALL
A. Connect the data entry plug assembly (1) to the EEC (2).
(1) Remove the protective cap or bag from the data entry plug assembly.
(2) Align the main key on the data entry plug assembly (1) with the electronic engine control (2) receptacle main key-way (Ref. AMM TASK 70-23-15-912-010).
(3) Use light hand pressure to engage the data entry plug assembly with the electronic engine control receptacle and tighten it by hand.
(4) TORQUE the data entry plug connector to between 35.2 and 28.8 lbf.in (0.40 and 0.33 m.daN ). Use the IAE1R19416 WRENCH-SPECIAL 4 AND 8 SLOT CONNECTOR, LIFTING (Ref. AMM TASK 70-23-11-911-013).
Subtask 73-22-35-410-054-A ** ON A/C NOT FOR ALL (1) Remove the protective cap or bag from the data entry plug assembly.
(2) Align the main key on the data entry plug assembly (1) with the electronic engine control (2) receptacle main key-way (Ref. AMM TASK 70-23-15-912-010).
(3) Use light hand pressure to engage the data entry plug assembly with the electronic engine control receptacle and tighten it by hand.
(4) TORQUE the data entry plug connector to between 35.2 and 28.8 lbf.in (0.40 and 0.33 m.daN )
. Use the IAE1R19416 WRENCH-SPECIAL 4 AND 8 SLOT CONNECTOR, LIFTING (Ref. AMM TASK 70-23-11-911-013). 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).
Subtask 73-22-35-730-054-A ** ON A/C NOT FOR ALL (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).