DOC AIRBUS | AMM A320FInstallation of the Isolation Valve Assembly
TASK 47-21-41-400-001-A
Installation of the Isolation Valve Assembly
Self explanatory
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 47-21-41-860-052-A ** ON A/C NOT FOR ALL
Subtask 47-21-41-420-050-B ** ON A/C NOT FOR ALL
(2) Examine the joints at the inlet and outlet of the Gate Valve (1) for signs of air leakage.
5. Close-up
Subtask 47-21-41-410-050-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:43:07 UTC
Installation of the Isolation Valve Assembly
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
FIN: 3YA ** ON A/C NOT FOR ALL
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.03GEE1) | Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 191BB |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 10 | PACKING | AIPC 47-21-04-01-020 |
| 12 | PACKING | AIPC 47-21-04-01-020 |
| 2 | PACKING | AIPC 47-21-04-01-020 |
| 4 | PACKING | AIPC 47-21-04-01-020 |
| 10 | PACKING | AIPC 47-21-84-01-020 |
| 12 | PACKING | AIPC 47-21-84-01-020 |
| 2 | PACKING | AIPC 47-21-84-01-020 |
| 4 | PACKING | AIPC 47-21-84-01-020 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 47-31-34-740-001-A | BITE Test of the IGGS with Bleed Air |
| TASK 47-31-34-740-001-A-01 | BITE Test of the IGGS without Bleed Air |
| TASK 53-35-13-000-002-A | Removal of the Quick-Release Access Panels from the Belly Fairing Structure |
| TASK 53-35-13-400-002-A | Installation of the Quick-Release Access Panels on the Belly Fairing Structure |
Isolation (Gate Valve) AssemblySubtask 47-21-41-860-052-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)
Subtask 47-21-41-865-051-A ** ON A/C NOT FOR ALL (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 47-21-41-010-051-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | IGGS/CTRL | 7YA | N28 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | IGGS/CTRL | 7YA | P28 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | CSAS / CTRL | 1HW | U17 |
C. Get Access
(1) Put an access platform ACCESS PLATFORM 2M (6 FT) in position at the zones 191 and 192.
(2) Remove the quick-release access panel (access panel) 191BB (Ref. AMM TASK 53-35-13-000-002).
4. Procedure(1) Put an access platform ACCESS PLATFORM 2M (6 FT) in position at the zones 191 and 192.
(2) Remove the quick-release access panel (access panel) 191BB (Ref. AMM TASK 53-35-13-000-002).
Subtask 47-21-41-420-050-B ** ON A/C NOT FOR ALL
A. Installation of the Isolation Valve (Gate Valve).
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Remove blanking caps from the inlet and outlet fittings of the Gate Valve (1).
(4) Remove blanking caps from the IGGS pallet duct assembly and the inlet fitting of the filter assembly.
(5) Install the bracket (5) to the back of the Gate Valve (1) with the screws (9) and the washers (8).
(6) Support the Gate Valve (1) and TORQUE the screws (9) to between 0.36 and 0.27 m.daN (31.86 and 23.89 lbf.in )
.
(8) Install the new packing (2) to the outlet fitting of the Gate Valve Assembly (1).
(9) Install the new packing (12) to the inlet fitting of the Gate Valve Assembly (1).
(10) Install the new packing (10) to the IGGS pallet duct assembly.
(11) Install the new packing (4) to the inlet fitting of the filter assembly.
(12) Install the sleeves to the Gate Valve (1).
(a) Pull up the latch pawls of the clamp on the coupling assembly (3) to release the sleeve.
(b) Put the sleeve in position on the outlet fitting of the Gate Valve (1). Push the sleeve until it is at the bottom of the outlet fitting.
(c) Pull up the latch pawls of the clamp on the coupling (11) to release the sleeve.
(d) Put the sleeve in position on the inlet fitting of the Gate Valve (1). Push the sleeve until it is at the bottom of the inlet fitting.
(13) Install the Gate Valve (1) to the IGGS Pallet.
(a) Put the Gate Valve (1) with bracket (5) in position on the IGGS pallet.
(b) Then, support the Gate Valve Assembly (1) and use the washers (7) and the screws (6) to loosely attach the bracket (5) in position on the IGGS pallet.
(a) Move the sleeve across the packing (4) and install it on the inlet fitting of the filter assembly.
(15) Install the clamp of the coupling assembly (11) to the sleeve.
(a) Move the sleeve across the packing (10) and install it on the IGGS duct assembly.
(16) Safety the bracket (5) to the IGGS pallet.
(a) TORQUE the screws (6) to between 0.36 and 0.27 m.daN (31.86 and 23.89 lbf.in ) to safety the bracket (5).
(17) Connection of the electrical connector.
(a) Remove the TIE WRAP that attaches the electrical connector (13) to the IGGS pallet.
(b) Remove the CAP-BLANKING from each electrical connector and receptacle.
(c) Make sure that all the electrical connections are clean and in the correct condition.
(d) Connect the electrical connector (13) to the Gate Valve (1).
Subtask 47-21-41-790-050-A ** ON A/C NOT FOR ALL CAUTION:
BE CAREFUL WHEN YOU TOUCH THIS ASSEMBLY. IT HAS PRECISION- TOLERANCE COMPONENTS WITH VERY POLISHED SURFACES. IF YOU ARE NOT CAREFUL, IT IS VERY EASY TO CAUSE DAMAGE TO THESE COMPONENTS (INTERNAL CONTAMINATION, EXTERNAL IMPACT DAMAGE).
(1) Clean the component interfaces and the adjacent area.(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Remove blanking caps from the inlet and outlet fittings of the Gate Valve (1).
(4) Remove blanking caps from the IGGS pallet duct assembly and the inlet fitting of the filter assembly.
(5) Install the bracket (5) to the back of the Gate Valve (1) with the screws (9) and the washers (8).
(6) Support the Gate Valve (1) and TORQUE the screws (9) to between 0.36 and 0.27 m.daN (31.86 and 23.89 lbf.in )
. WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
REMOVE OR INSTALL PACKING SEALS CAREFULLY. DAMAGE TO SEALS OR SEALING SURFACES CAN CAUSE LEAKAGE AND CORROSION.
(7) Apply a thin layer of Synthetic Oil base Grease-Fuel and Oxidized Environment Fluorinated - (Material No.03GEE1) to the new AIPC 47-21-04-01-020 PACKING (2) or AIPC 47-21-84-01-020 PACKING (2), AIPC 47-21-04-01-020 PACKING (4) or AIPC 47-21-84-01-020 PACKING (4), AIPC 47-21-04-01-020 PACKING (10) or AIPC 47-21-84-01-020 PACKING (10) and AIPC 47-21-04-01-020 PACKING (12) or AIPC 47-21-84-01-020 PACKING (12). (8) Install the new packing (2) to the outlet fitting of the Gate Valve Assembly (1).
(9) Install the new packing (12) to the inlet fitting of the Gate Valve Assembly (1).
(10) Install the new packing (10) to the IGGS pallet duct assembly.
(11) Install the new packing (4) to the inlet fitting of the filter assembly.
(12) Install the sleeves to the Gate Valve (1).
(a) Pull up the latch pawls of the clamp on the coupling assembly (3) to release the sleeve.
(b) Put the sleeve in position on the outlet fitting of the Gate Valve (1). Push the sleeve until it is at the bottom of the outlet fitting.
(c) Pull up the latch pawls of the clamp on the coupling (11) to release the sleeve.
(d) Put the sleeve in position on the inlet fitting of the Gate Valve (1). Push the sleeve until it is at the bottom of the inlet fitting.
(13) Install the Gate Valve (1) to the IGGS Pallet.
(a) Put the Gate Valve (1) with bracket (5) in position on the IGGS pallet.
(b) Then, support the Gate Valve Assembly (1) and use the washers (7) and the screws (6) to loosely attach the bracket (5) in position on the IGGS pallet.
NOTE: Install the screws (6) by hand at this step, loosely assemble so that the gate valve can be aligned correctly.
(14) Install the clamp of the coupling assembly (3) to the sleeve. (a) Move the sleeve across the packing (4) and install it on the inlet fitting of the filter assembly.
NOTE: Make sure that each packing (2) and (4) is below the sleeve, and that the distance between each packing (2) and (4) and each sleeve end is equal.
(b) Install the clamp to the coupling assembly (3) and engage the latches. (15) Install the clamp of the coupling assembly (11) to the sleeve.
(a) Move the sleeve across the packing (10) and install it on the IGGS duct assembly.
NOTE: Make sure that each packing (10) and (12) is below the sleeve, and that the distance between each packing (10) and (12) and each sleeve end is equal.
(b) Install the clamp to the coupling assembly (11) and engage the latches. (16) Safety the bracket (5) to the IGGS pallet.
(a) TORQUE the screws (6) to between 0.36 and 0.27 m.daN (31.86 and 23.89 lbf.in )
to safety the bracket (5). (17) Connection of the electrical connector.
(a) Remove the TIE WRAP that attaches the electrical connector (13) to the IGGS pallet.
(b) Remove the CAP-BLANKING from each electrical connector and receptacle.
(c) Make sure that all the electrical connections are clean and in the correct condition.
(d) Connect the electrical connector (13) to the Gate Valve (1).
WARNING:
DO NOT GO INTO THE WORK AREA UNTIL A MINIMUM OF 5 MINUTES AFTER YOU REMOVE THE ACCESS PANEL. LET AIR FLOW THROUGH THE WORK AREA. AIR FROM THIS SYSTEM HAS A LOW OXYGEN CONTENT AND CAN CAUSE INJURY OR DEATH.
B. Leak Test NOTE: Do the two subsequent steps at the same time. Two persons are necessary to do these steps.
(1) Do the BITE Test of the IGGS with Bleed Air (Ref. AMM TASK 47-31-34-740-001). (2) Examine the joints at the inlet and outlet of the Gate Valve (1) for signs of air leakage.
NOTE: Air leaks are not permitted.
Subtask 47-21-41-410-050-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) Install the access panel 191BB (Ref. AMM TASK 53-35-13-400-002).
Subtask 47-21-41-865-052-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 191BB (Ref. AMM TASK 53-35-13-400-002).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 47-21-41-860-053-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | IGGS/CTRL | 7YA | N28 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | IGGS/CTRL | 7YA | P28 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | CSAS / CTRL | 1HW | U17 |
C. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Remove the WARNING NOTICE(S).
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Remove the WARNING NOTICE(S).