W DOC AIRBUS | AMM A320F

Installation of the Air Inlet Check Valve

TASK 28-28-37-400-001-A
Installation of the Air Inlet Check Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
FIN: 177QM1 ** ON A/C NOT FOR ALL
FIN: 177QM2 ** ON A/C NOT FOR ALL
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT)
No specific
1
WARNING NOTICE(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.03FAB1)
Mineral Oil base Grease-- Vaseline or Petrolatum -
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
2
O-RING
AIPC 28-12-04-12-040
3
O-RING
AIPC 28-12-04-12-040
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 24-42-00-861-001-A
Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A
De-energize the Ground Service Network Supplied from the External Power
TASK 28-00-00-910-001-A
Fuel Safety Procedures
TASK 28-11-27-000-001-A
Removal of the Additional Center Tank (ACT)
TASK 28-11-27-400-001-A
Installation of the Additional Center Tank (ACT)
TASK 28-11-49-000-001-A
Removal of the ACT Integrated Impact Wall
TASK 28-11-49-400-001-A
Installation of the ACT Integrated Impact Wall
TASK 28-28-00-720-005-A
Functional Test of the Check Valves of the ACT
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
F Air Inlet Check Valve
3. Job Set-up
Subtask 28-28-37-860-058-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001).
   (2) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
   (3) Make sure that a WARNING NOTICE(S) is in position on:
  • the refuel/defuel panel 801VU,
  • the fuel panel 40VU,
    to tell persons not to operate the refuel/defuel system.
Subtask 28-28-37-010-058-A ** ON A/C NOT FOR ALL
B. Get Access
   (1) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
   (2) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position at the opening of the aft cargo-compartment.
   (3) Make sure that the Integrated Impact Wall is removed from the aft cargo-compartment (Ref. AMM TASK 28-11-49-000-001).
Subtask 28-28-37-010-058-B ** ON A/C NOT FOR ALL
B. Get Access
   (1) Make sure that the aft cargo-compartment door is open (Ref. AMM TASK 52-30-00-860-001).
   (2) Make sure that an ACCESS PLATFORM 2M (6 FT) is in position at the opening of the aft cargo-compartment.
   (3) For the Check Valve 177QM2, make sure that the Integrated Impact Wall is removed from the aft cargo-compartment (Ref. AMM TASK 28-11-49-000-001).
   (4) For the Check Valve 177QM1, make sure the Additional Center Tank No.2 (ACT2) is removed from the aft cargo-compartment (Ref. AMM TASK 28-11-27-000-001).
Subtask 28-28-37-865-051-A ** ON A/C NOT FOR ALL
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUACT1/REFUEL & SPLY33QUL29
121VUFUEL/HI/LVL/SPLY1QJL25
121VUFUEL/RFL/DFL/SPLY2QUL24
121VUFUEL/RFL/DFL/XFR/DEFUEL/VALVE1QUL23
121VUACT XFR VALVE MAN CTL30QHN29
121VUACT1/CTL & SPLY9QHP29
121VUACT PUMP SUPPLY25QHQ29
4. Procedure
Subtask 28-28-37-420-054-A ** ON A/C NOT FOR ALL
A. Installation of the Check Valve
   (1) Remove the PLUG-BLANKING from each disconnected line end.
   (2) Clean the component interfaces and the adjacent area.
   (3) Do an inspection of the component interfaces and the adjacent area.
   (4) Apply a thin layer of Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-12-04-12-040 O-RING (2) and AIPC 28-12-04-12-040 O-RING (3).
   (5) Put the O-rings (2) and (3) in position on the check valve (4).
   (6) Put the check valve (4) in position on the receptacle (1).
NOTE: Make sure that the O-rings (2) and (3) stay in the groove of the check valve (4).
   (7) Install the screws (6) and the washers (5).
   (8) Connect the pressure line (7) to the check valve (4) and tighten the union nut (8).
Subtask 28-28-37-865-059-A ** ON A/C NOT FOR ALL
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUACT1/REFUEL & SPLY33QUL29
121VUFUEL/HI/LVL/SPLY1QJL25
121VUFUEL/RFL/DFL/SPLY2QUL24
121VUFUEL/RFL/DFL/XFR/DEFUEL/VALVE1QUL23
121VUACT XFR VALVE MAN CTL30QHN29
121VUACT1/CTL & SPLY9QHP29
121VUACT PUMP SUPPLY25QHQ29
Subtask 28-28-37-720-050-A ** ON A/C NOT FOR ALL
C. Test
   (1) Do the Functional Test of the Check Valves of the ACT (Ref. AMM TASK 28-28-00-720-005).
5. Close-up
Subtask 28-28-37-410-054-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Install the Integrated Impact Wall in the aft cargo-compartment (Ref. AMM TASK 28-11-49-400-001).
   (2) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
Subtask 28-28-37-410-054-B ** ON A/C NOT FOR ALL
A. Close Access
   (1) For the Check Valve 177QM1, install the ACT2 in the aft cargo-compartment (Ref. AMM TASK 28-11-27-400-001).
   (2) For the Check Valve 177QM2, install the Integrated Impact Wall in the aft cargo-compartment (Ref. AMM TASK 28-11-49-400-001).
   (3) Close the aft cargo-compartment door (Ref. AMM TASK 52-30-00-860-002).
Subtask 28-28-37-860-059-A ** ON A/C NOT FOR ALL
B. Put the aircraft back to the serviceable condition.
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the access platform(s).
   (3) Remove the WARNING NOTICE(S).
   (4) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
[Rev.10 from 2021] 2026.04.02 06:17:56 UTC
"WTRUIB" 2025