DOC AIRBUS | AMM A320FRepair the Rubber Seal of the Disconnect Panel by Replacement of the Lower Seal and Clip - VRS6669 [IAE]
TASK 72-38-25-300-010-A
Repair the Rubber Seal of the Disconnect Panel by Replacement of the Lower Seal and Clip - VRS6669
1. Reason for the Job
This repair covers the replacement of the 'U' shaped rubber seal and the 'U' shaped clip.
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 72-38-25-941-055-A ** ON A/C NOT FOR ALL
Subtask 72-38-25-020-056-A ** ON A/C NOT FOR ALL
Subtask 72-38-25-410-060-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:46:12 UTC
Repair the Rubber Seal of the Disconnect Panel by Replacement of the Lower Seal and Clip - VRS6669
1. Reason for the Job
This repair covers the replacement of the 'U' shaped rubber seal and the 'U' shaped clip.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 2M (6 FT) |
| No specific | AR | KNIFE - SHARP |
| No specific | AR | VIBRO ENGRAVER |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-031) | Acetone, Technical grade |
| (Material No.V05-016) | garnet paper |
| (Material No.V08-013) | cold curing silicone |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-010-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 |
| TASK 78-32-00-010-010-A | Opening of the Thrust Reverser Halves |
| TASK 78-32-00-410-010-A | Closing of the Thrust Reverser Halves |
Subtask 72-38-25-941-055-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 72-38-25-010-060-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) in position.
Subtask 72-38-25-040-055-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) in position.
C. Deactivate the Thrust Reverser
Subtask 72-38-25-010-061-A ** ON A/C NOT FOR ALL WARNING:
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) Deactivate the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012). D. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(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 72-38-25-020-056-A ** ON A/C NOT FOR ALL
A. Remove the Existing Lower Seal
(2) Carefully remove the existing 'U' shaped seal from between the bifurcation panel and the 'U' shaped retaining clip (P/N 6A7934). Pull seal from one side and work around the 'U' until seal is free then discard.
(3) Remove the existing 'U' shaped retaining ring (P/N 6A7934) and discard.
Subtask 72-38-25-020-057-A ** ON A/C NOT FOR ALL NOTE: If the seal is damaged and needs replacing in accordance with this repair, it is recommended that SB NAC78-0219 is incorporated at the same time.
NOTE: SB NAC78-0219 specifies a minimun gap between C-ducts of 0.080 in. (2.0320 mm) and removal of all sharp edges and burrs from the seal lands and supporting structures.
(1) Cut through the existing seal at the interface between the 'U' shaped seal and the left side and right side seals. Take care not to damage the left and right side seals. Use a KNIFE - SHARP. (2) Carefully remove the existing 'U' shaped seal from between the bifurcation panel and the 'U' shaped retaining clip (P/N 6A7934). Pull seal from one side and work around the 'U' until seal is free then discard.
(3) Remove the existing 'U' shaped retaining ring (P/N 6A7934) and discard.
B. Remove Sealant and Bung from Existing Seal
(1) Carefully remove the internal sealant and bung from adjacent fixed left and right side seals in order to accommodate replacement of 'U' shaped seal. Take care not to damage internal bore of left/right side seals.
(2) Remove all remaining traces of existing sealant with garnet paper (Material No.V05-016) .
(3) Clean internal mating surfaces. Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist withV01-031 Acetone, Technical grade
Subtask 72-38-25-360-052-A ** ON A/C NOT FOR ALL (1) Carefully remove the internal sealant and bung from adjacent fixed left and right side seals in order to accommodate replacement of 'U' shaped seal. Take care not to damage internal bore of left/right side seals.
(2) Remove all remaining traces of existing sealant with garnet paper (Material No.V05-016) .
(3) Clean internal mating surfaces. Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with
C. Fit the New 'U' Shaped Seal
(1) Apply sealant to each end of the replacement 'U' shaped seal. Use cold curing silicone (Material No.V08-013) .
(2) Install the plugs into the seal ends on the bifurcation panel. Ensure ends are correctly inserted into the existing left/right side seals. Use standard workshop equipment.
(3) Remove any unwanted sealant compound from the joint areas. Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist withV01-031 Acetone, Technical grade
Subtask 72-38-25-350-057-A ** ON A/C NOT FOR ALL (1) Apply sealant to each end of the replacement 'U' shaped seal. Use cold curing silicone (Material No.V08-013) .
(2) Install the plugs into the seal ends on the bifurcation panel. Ensure ends are correctly inserted into the existing left/right side seals. Use standard workshop equipment.
(3) Remove any unwanted sealant compound from the joint areas. Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with
D. Fit the Replacement 'U' Shaped Clip
(1) Fit the replacement 'U' shaped clip and push firmly down to engage all 5 tangs. You must hear each tang click as it engages.
(2) Wipe off any excess sealant from the repair area. The silicone has to be flush and smooth with the contour of the rubber fire seal. Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist withV01-031 Acetone, Technical grade
(3) Cure the silicone compound. Cure at 61 deg.F (16 deg.C) for 12 hours.
Subtask 72-38-25-220-053-A ** ON A/C NOT FOR ALL (1) Fit the replacement 'U' shaped clip and push firmly down to engage all 5 tangs. You must hear each tang click as it engages.
(2) Wipe off any excess sealant from the repair area. The silicone has to be flush and smooth with the contour of the rubber fire seal. Use a Textile-Lint free Cotton - (Material No.14SBA1) made moist with
(3) Cure the silicone compound. Cure at 61 deg.F (16 deg.C) for 12 hours.
NOTE: The part can be touched after 2 hours. The TRU doors can be closed after 4 hours, however they must be reopened and the seal joint examined again after 12 hours. If any crack or separation is seen then the repair should be repeated.
E. Visually Examine the Repair
(1) Examine the silicone compound around the repaired areas. No holes should be seen at the joints. The repaired areas must be smooth and flush with the rubber seal contour.
Subtask 72-38-25-350-058-A ** ON A/C NOT FOR ALL (1) Examine the silicone compound around the repaired areas. No holes should be seen at the joints. The repaired areas must be smooth and flush with the rubber seal contour.
F. Identify the Repair
(1) Make a mark, VRS6669, adjacent to the existing part number. Use VIBRO ENGRAVER.
5. Close-up(1) Make a mark, VRS6669, adjacent to the existing part number. Use VIBRO ENGRAVER.
Subtask 72-38-25-410-060-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the access platform(s).
Subtask 72-38-25-440-055-A ** ON A/C NOT FOR ALL Subtask 72-38-25-410-061-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 thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the access platform(s).