DOC AIRBUS | AMM A320FInstallation of the Water Drain Valve
TASK 28-11-41-400-003-A
Installation of the Water Drain Valve
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 28-11-41-941-073-A ** ON A/C NOT FOR ALL
Subtask 28-11-41-420-053-A ** ON A/C NOT FOR ALL
Subtask 28-11-41-650-071-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 06:17:05 UTC
Installation of the Water Drain Valve
WARNING:
THIS PROCEDURE USES A FUEL SYSTEM ITEM THAT IS IN A CATEGORY KNOWN AS A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL). CDCCL IDENTIFIES AN ITEM THAT CAN BE THE SOURCE OF A POSSIBLE FUEL TANK IGNITION. YOU MUST KEEP ALL CDCCL ITEMS IN THE APPROVED CONFIGURATION. DAMAGE, WEAR OR CHANGES TO A CDCCL ITEM CAN CAUSE A POSSIBLE FUEL TANK EXPLOSION.
WARNING:
MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.
WARNING:
MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
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
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | Torque wrench: range to between 11 and 9 lbf.in (0.12 and 0.10 m.daN )  |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.01ABA1) | Turbine Fuel-- Kerosene - |
| (Material No.03FAB1) | Mineral Oil base Grease-- Vaseline or Petrolatum - |
| (Material No.06HAA1) | Coating Sealant-Fuel Tank Brushable - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 540KB, 640KB |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 3 | O-RING | AIPC 28-11-05-23-030 |
| 7 | O-RING | AIPC 28-11-05-23-080 |
| 6 | O-RING | AIPC 28-11-05-23-090 |
| 7 | O-RING | AIPC 28-11-85-21-040 |
| 6 | O-RING | AIPC 28-11-85-21-050 |
| 3 | O-RING | AIPC 28-11-85-21-100 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-11-28-650-001-A | General Refuel/Defuel Safety Procedures |
| TASK 12-11-28-650-003-A | Pressure Refuel with Automatic Control |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 28-10-00-910-001-A | Safety Procedures When You Do Work in a Fuel Tank |
| TASK 28-10-00-910-002-A | Access to the Fuel Tanks and the Work Areas |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 28-25-00-650-003-A | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-650-003-A-01 | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-869-001-A | Fuel Transfer |
| TASK 57-27-11-000-002-A | Removal of the Access Panel |
| TASK 57-27-11-400-002-A | Installation of the Access Panel |
Water Drain Valve - Outer CellSubtask 28-11-41-941-073-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(2) Make sure that the SAFETY BARRIER(S) are in position.
Subtask 28-11-41-860-058-A ** ON A/C NOT FOR ALL WARNING:
BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.
(1) You must obey the safety procedures when you do work in a fuel tank (Ref. AMM TASK 28-10-00-910-001). (2) Make sure that the SAFETY BARRIER(S) are in position.
B. Aircraft Maintenance Configuration
(1) Make sure that the applicable wing tank is defueled (Ref. AMM TASK 28-25-00-650-001) .
(2) Make sure that the remaining fuel has been drained from the applicable wing tank outer cell (Ref. AMM TASK 28-25-00-650-003).
(3) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is below the applicable access panel 540KB 640KB.
(4) Make sure that the applicable access panel 540KB 640KB is removed (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-10-00-910-002).
4. Procedure(1) Make sure that the applicable wing tank is defueled (Ref. AMM TASK 28-25-00-650-001) .
(2) Make sure that the remaining fuel has been drained from the applicable wing tank outer cell (Ref. AMM TASK 28-25-00-650-003).
(3) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is below the applicable access panel 540KB 640KB.
(4) Make sure that the applicable access panel 540KB 640KB is removed (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-10-00-910-002).
Subtask 28-11-41-420-053-A ** ON A/C NOT FOR ALL
A. Preparation for Installation
(1) Clean the component interfaces and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-11-05-23-030 O-RING (3) or AIPC 28-11-85-21-100 O-RING (3), AIPC 28-11-05-23-080 O-RING (7) or AIPC 28-11-85-21-040 O-RING (7) and AIPC 28-11-05-23-090 O-RING (6) or AIPC 28-11-85-21-050 O-RING (6).
Subtask 28-11-41-420-058-C ** ON A/C NOT FOR ALL (1) Clean the component interfaces and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-11-05-23-030 O-RING (3) or AIPC 28-11-85-21-100 O-RING (3), AIPC 28-11-05-23-080 O-RING (7) or AIPC 28-11-85-21-040 O-RING (7) and AIPC 28-11-05-23-090 O-RING (6) or AIPC 28-11-85-21-050 O-RING (6).
B. Installation of the Water Drain Valve
(1) Install the O-ring (3) on the elbow (1).
(2) Install the elbow (1) in the water drain valve (5) and tighten the nut (2) by hand.
(4) Install one O-ring (7) on each bolt (8) and (9) and the O-ring (6) on the water drain valve (5).
(5) Install the water drain valve (5) as follows:
(a) Install the water drain valve (5) then install and tighten the nuts (4).
(6) Carefully turn the elbow (1) so that the projection at the end lightly touches the bottom skin. Make sure that the angled inlet of the elbow (1) is parallel with the bottom skin.
(7) Hold the elbow (1) in position and TORQUE the nut (2) to between 11 and 9 lbf.in (0.12 and 0.10 m.daN ).
(8) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the nuts (4) and the ends of the bolts (8) and (9).
Subtask 28-11-41-410-052-A ** ON A/C NOT FOR ALL (1) Install the O-ring (3) on the elbow (1).
(2) Install the elbow (1) in the water drain valve (5) and tighten the nut (2) by hand.
NOTE: You must bond the bolt (8) (Ref. AMM TASK 20-28-00-912-802).
(3) Put the bolt (8) and the bolts (9) in the correct positions. (4) Install one O-ring (7) on each bolt (8) and (9) and the O-ring (6) on the water drain valve (5).
(5) Install the water drain valve (5) as follows:
(a) Install the water drain valve (5) then install and tighten the nuts (4).
WARNING:
THIS INSTRUCTION IS APPLICABLE TO A CRITICAL DESIGN CONFIGURATION CONTROL LIMITATION (CDCCL) ITEM. CAREFULLY OBEY ALL GIVEN INSTRUCTIONS WHEN YOU DO THIS STEP. IF YOU DO NOT OBEY THESE INSTRUCTIONS, A DANGEROUS CONDITION CAN OCCUR THAT CAN CAUSE A POSSIBLE FUEL TANK EXPLOSION.
(b) Make sure that the bolt (8) is correctly bonded (Ref. AMM TASK 20-28-00-912-802). (6) Carefully turn the elbow (1) so that the projection at the end lightly touches the bottom skin. Make sure that the angled inlet of the elbow (1) is parallel with the bottom skin.
(7) Hold the elbow (1) in position and TORQUE the nut (2) to between 11 and 9 lbf.in (0.12 and 0.10 m.daN )
. (8) Apply Coating Sealant-Fuel Tank Brushable - (Material No.06HAA1) to the nuts (4) and the ends of the bolts (8) and (9).
C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 540KB 640KB (Ref. AMM TASK 57-27-11-400-002).
Subtask 28-11-41-650-070-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 540KB 640KB (Ref. AMM TASK 57-27-11-400-002).
D. Fuel Configuration
(1) Refuel the applicable wing tank outer cell (Ref. AMM TASK 12-11-28-650-003).
Subtask 28-11-41-790-052-A ** ON A/C NOT FOR ALL (1) Refuel the applicable wing tank outer cell (Ref. AMM TASK 12-11-28-650-003).
E. Leak Test
(1) Examine the water drain valve (5) and the bottom skin joint for leaks.
5. Close-up(1) Examine the water drain valve (5) and the bottom skin joint for leaks.
Subtask 28-11-41-650-071-A ** ON A/C NOT FOR ALL
A. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-001), (Ref. AMM TASK 28-25-00-650-003) or (Ref. AMM TASK 28-25-00-869-001).
Subtask 28-11-41-942-052-A ** ON A/C NOT FOR ALL (1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-001), (Ref. AMM TASK 28-25-00-650-003) or (Ref. AMM TASK 28-25-00-869-001).
B. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.