DOC AIRBUS | AMM A320FInstallation of the Check Valve of the Fuel Pump Canister
TASK 28-21-52-400-004-A
Installation of the Check Valve of the Fuel Pump Canister
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 28-21-52-941-065-A
Subtask 28-21-52-420-059-A
Subtask 28-21-52-942-056-A
[Rev.10 from 2021]
2026.04.02 06:17:28 UTC
Installation of the Check Valve of the Fuel Pump Canister
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
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03HBD9) | Synthetic Ester base Grease-General Purpose Low Temp - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 195BB, 196BB |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 5 | O-RING | AIPC 28-21-52-01-100 |
| REFERENCE | DESIGNATION |
|---|---|
| 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 28-00-00-910-001-A | Fuel Safety Procedures |
| TASK 28-21-00-710-007-A | Operational Test of the Main Fuel-Pump System with Fuel Flow by Transfer |
| TASK 28-21-51-000-001-A | Removal of the Fuel Pumps |
| TASK 28-21-51-000-002-A | Removal of the Fuel Pumps |
| TASK 28-21-51-400-001-A | Installation of the Fuel Pumps |
| TASK 28-21-51-400-002-A | Installation of the Fuel Pumps |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 28-25-00-869-001-A | Fuel Transfer |
Check Valve of the Fuel Pump Canister - Location and DetailSubtask 28-21-52-941-065-A
A. Safety Precautions
(2) Make sure that the SAFETY BARRIER(S) are in position.
(3) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate the fuel system.
Subtask 28-21-52-860-053-A ** ON A/C NOT FOR ALL WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
(1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001). (2) Make sure that the SAFETY BARRIER(S) are in position.
(3) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate the fuel system.
B. Aircraft Maintenance Configuration
(1) Make sure that the applicable wing tank has been defueled (Ref. AMM TASK 28-25-00-650-001), or the fuel has been transferred (Ref. AMM TASK 28-25-00-869-001).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position below the applicable fuel pump.
(3) Make sure that the applicable fuel pump has been removed (Ref. AMM TASK 28-21-51-000-001).
Subtask 28-21-52-860-053-B ** ON A/C NOT FOR ALL (1) Make sure that the applicable wing tank has been defueled (Ref. AMM TASK 28-25-00-650-001), or the fuel has been transferred (Ref. AMM TASK 28-25-00-869-001).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position below the applicable fuel pump.
(3) Make sure that the applicable fuel pump has been removed (Ref. AMM TASK 28-21-51-000-001).
B. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position below the applicable fuel pump.
(2) For the wing tank fuel pump canister check valves:
(a) Make sure that the applicable wing tank has been defueled (Ref. AMM TASK 28-25-00-650-001), or the fuel has been transferred (Ref. AMM TASK 28-25-00-869-001).
(3) Make sure that the applicable fuel pump has been removed (Ref. AMM TASK 28-21-51-000-001).
(4) For the center-tank fuel pump canister 84QM check valve:
(a) Make sure that the LH wing tank has been defueled (Ref. AMM TASK 28-25-00-650-001), or the fuel has been transferred (Ref. AMM TASK 28-25-00-869-001).
(b) Make sure that the access panel 195BB is open.
(c) Make sure that the applicable fuel pump has been removed (Ref. AMM TASK 28-21-51-000-002).
(5) For the center-tank fuel pump canister 85QM check valve:
(a) Make sure that the RH wing tank has been defueled (Ref. AMM TASK 28-25-00-650-001), or the fuel has been transferred (Ref. AMM TASK 28-25-00-869-001).
(b) Make sure that the access panel 196BB is open.
(c) Make sure that the applicable fuel pump has been removed (Ref. AMM TASK 28-21-51-000-002).
Subtask 28-21-52-865-059-A (1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position below the applicable fuel pump.
(2) For the wing tank fuel pump canister check valves:
(a) Make sure that the applicable wing tank has been defueled (Ref. AMM TASK 28-25-00-650-001), or the fuel has been transferred (Ref. AMM TASK 28-25-00-869-001).
(3) Make sure that the applicable fuel pump has been removed (Ref. AMM TASK 28-21-51-000-001).
(4) For the center-tank fuel pump canister 84QM check valve:
(a) Make sure that the LH wing tank has been defueled (Ref. AMM TASK 28-25-00-650-001), or the fuel has been transferred (Ref. AMM TASK 28-25-00-869-001).
(b) Make sure that the access panel 195BB is open.
(c) Make sure that the applicable fuel pump has been removed (Ref. AMM TASK 28-21-51-000-002).
(5) For the center-tank fuel pump canister 85QM check valve:
(a) Make sure that the RH wing tank has been defueled (Ref. AMM TASK 28-25-00-650-001), or the fuel has been transferred (Ref. AMM TASK 28-25-00-869-001).
(b) Make sure that the access panel 196BB is open.
(c) Make sure that the applicable fuel pump has been removed (Ref. AMM TASK 28-21-51-000-002).
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/PUMP2 SPLY | 30QA | P26 |
| 121VU | FUEL/CTR TK/PUMP1 SPLY | 29QA | P23 |
| ** ON A/C ALL | |||
| 121VU | FUEL/L WING TK/PUMP2 SPLY | 7QA | N26 |
| 121VU | FUEL/L WING TK/PUMP1 SPLY | 1QA | N23 |
| 121VU | FUEL/R WING TK/PUMP2 SPLY | 8QA | Q26 |
| 121VU | FUEL/R WING TK/PUMP1 SPLY | 2QA | Q23 |
| 123VU | L WING TK/PUMP 1/STBY SPLY | 11QA | AD12 |
| 123VU | R WING TK/PUMP 1/STBY SPLY | 12QA | AE12 |
Subtask 28-21-52-420-059-A
A. Preparation for Installation
(1) Clean the component interfaces and/or the adjacent areas 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) Lubricate the new AIPC 28-21-52-01-100 O-RING (5) with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) .
Subtask 28-21-52-420-060-A (1) Clean the component interfaces and/or the adjacent areas 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) Lubricate the new AIPC 28-21-52-01-100 O-RING (5) with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) .
B. Installation of the Check Valve of the Fuel Pump Canister
(1) Install the new O-ring (5) on the check valve (4).
(2) Put the check valve (4) in position in the canister (1).
(3) Install the four washers (3) if applicable and the four screws (2) (Ref. AMM TASK 20-28-00-912-802).
(5) TORQUE the screws (2) to between 22 and 18 lbf.in (0.25 and 0.20 m.daN )
.
Subtask 28-21-52-410-054-A ** ON A/C NOT FOR ALL (1) Install the new O-ring (5) on the check valve (4).
(2) Put the check valve (4) in position in the canister (1).
(3) Install the four washers (3) if applicable and the four screws (2) (Ref. AMM TASK 20-28-00-912-802).
NOTE: The washers (3) are installed on canisters with part number series 568-1-27203-xxx and 568-1-27244-xxx.
The washers (3) are not installed on canisters with part number series C93R38-6xx.
(4) Bonding check: The washers (3) are not installed on canisters with part number series C93R38-6xx.
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.
(a) Do a bonding check (Ref. AMM TASK 20-28-00-912-802). (5) TORQUE the screws (2) to between 22 and 18 lbf.in (0.25 and 0.20 m.daN )
. C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable fuel pump (Ref. AMM TASK 28-21-51-400-001).
Subtask 28-21-52-410-054-B ** 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 applicable fuel pump (Ref. AMM TASK 28-21-51-400-001).
C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) For the check valve of the wing-tank fuel pump canisters:
(a) Install the applicable fuel pump (Ref. AMM TASK 28-21-51-400-001).
(3) For the check valve of the center-tank fuel pump canisters:
(a) Install the applicable fuel pump (Ref. AMM TASK 28-21-51-400-002).
(b) Close the applicable access panel 195BB 196BB.
Subtask 28-21-52-865-060-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) For the check valve of the wing-tank fuel pump canisters:
(a) Install the applicable fuel pump (Ref. AMM TASK 28-21-51-400-001).
(3) For the check valve of the center-tank fuel pump canisters:
(a) Install the applicable fuel pump (Ref. AMM TASK 28-21-51-400-002).
(b) Close the applicable access panel 195BB 196BB.
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 28-21-52-860-057-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/PUMP2 SPLY | 30QA | P26 |
| 121VU | FUEL/CTR TK/PUMP1 SPLY | 29QA | P23 |
| ** ON A/C ALL | |||
| 121VU | FUEL/L WING TK/PUMP2 SPLY | 7QA | N26 |
| 121VU | FUEL/L WING TK/PUMP1 SPLY | 1QA | N23 |
| 121VU | FUEL/R WING TK/PUMP2 SPLY | 8QA | Q26 |
| 121VU | FUEL/R WING TK/PUMP1 SPLY | 2QA | Q23 |
| 123VU | L WING TK/PUMP 1/STBY SPLY | 11QA | AD12 |
| 123VU | R WING TK/PUMP 1/STBY SPLY | 12QA | AE12 |
E. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).
Subtask 28-21-52-710-050-A (1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).
F. Test
(1) Do an operational test of the applicable main fuel pump system (Ref. AMM TASK 28-21-00-710-007).
5. Close-up(1) Do an operational test of the applicable main fuel pump system (Ref. AMM TASK 28-21-00-710-007).
Subtask 28-21-52-942-056-A
A. 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 WARNING NOTICE(S).
(5) 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 WARNING NOTICE(S).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.