W DOC AIRBUS | AMM A320F

Installation of the Air Inlet Check-Valve

TASK 28-28-37-400-003-A
Installation of the Air Inlet Check-Valve

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 150
FIN: 231QM1 ** 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
Torque wrench: range to between 43 and 39 m.N (31.71 and 28.76 lbf.ft ) T
No specific
Torque wrench: range to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.03FAB1)
Mineral Oil base Grease-- Vaseline or Petrolatum -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
150
AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
826
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
2
O-RING
AIPC 28-12-84-12-040
3
O-RING
AIPC 28-12-84-12-040
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 20-28-00-912-802-A
Electrical Bonding - General Maintenance Procedure
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 28-11-27-000-003-A
Removal of the Additional Center Tank No.2 (ACT AFT2)
TASK 28-11-27-400-003-A
Installation of the Additional Center Tank No.2 (ACT AFT2)
TASK 28-28-00-720-006-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 28-28-37-860-061-C ** 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 the WARNING NOTICE(S) are on control panels that follow, to tell persons not to operate the refuel/defuel system:
  • Refuel/defuel control panels 800VU and 801VU
  • Fuel control panel 40VU
  • Additional Center Tank (ACT) control panel 28VU.
   (4) Make sure that aft cargo-compartment door 826 is open (Ref. AMM TASK 52-30-00-860-001).
   (5) Make sure that the ACCESS PLATFORM 2M (6 FT) is below aft cargo-compartment door 826.
   (6) Make sure that CARGO COMPT LIGHT switch 8LU is in the ON position.
   (7) Make sure that the ACT AFT2 is removed (Ref. AMM TASK 28-11-27-000-003).
Subtask 28-28-37-865-061-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUFUEL/ACT AIR SOV/MAN/SPLY64QHJ20
121VUFUEL/ACT AIR SOV/AUTO/SPLY63QHJ19
121VUFUEL/ACT XFR VLV/MOT266QHJ18
121VUFUEL/ACT XFR VLV/MOT165QHJ17
121VUFUEL/INLET VLV MOT2 AUTO SP AFT 244QH2K16
121VUFUEL/INLET VLV MOT2 AUTO SP AFT 144QH1K15
121VUFUEL/INLET VLV/MOT1/AFT 284QHL29
121VUFUEL/INLET VLV/MOT1/MAN SPLY/AFT 146QHL28
121VUFUEL/HI/LVL/SPLY1QJL24
121VUFUEL/RFL/DFL/SPLY2QUL23
121VUFUEL/RFL/DFL/XFR/DEFUEL/VALVE1QUL22
121VUFUEL/ACT VENT VLV/MAN/SPLY62QHL21
121VUFUEL/ACT VENT VLV/AUTO/SPLY61QHL20
121VUFUEL/INLET VLV MAN CTL SPLY AFT 281QHL16
121VUFUEL/INLET VLV MAN CTL SPLY AFT 145QHL15
121VUFUEL/ACT/FUEL PUMP/SPLY25QHQ29
4. Procedure
Subtask 28-28-37-420-055-B ** ON A/C NOT FOR ALL
A. Installation of the Check Valve
F Air Inlet Check Valve ** ON A/C NOT FOR ALL
   (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 28-12-84-12-040 O-RING (2) and new AIPC 28-12-84-12-040 O-RING (3).
   (5) Put the O-rings (2) and (3) in position on the check valve (4).
   (6) Prepare equipment for electrical bonding (Ref. AMM TASK 20-28-00-912-802).
   (7) Install the check valve (4) in the receptacle (1):
     (a) Make sure that the O-rings (2) and (3) stay in the grooves of the check valve (4) while the check valve (4) is installed in the receptacle (1).
   (8) Install the washers (5) and (10) and the bolts (6) and (9) on the check valve (4).
   (9) Apply surface protection on the bonding bolt (9) (Ref. AMM TASK 20-28-00-912-802).
   (10) TORQUE the bolts (6) and (9) to between 0.48 and 0.37 m.daN (42.48 and 32.74 lbf.in ) T.
CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT EQUIPMENT FROM FLEXIBLE HOSES AND RIGID TUBING. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL CAUSE DAMAGE TO THE HOSES AND TUBES.
CAUTION: MAKE SURE THAT THE FLEXIBLE HOSES ARE NOT TWISTED OR PULLED TIGHT. IF THE HOSES ARE TWISTED OR PULLED TIGHT, THE CONNECTIONS WILL BREAK AND CAUSE A LEAK.
   (11) Install the hose (7) on the check valve (4) and install the union nut (8).
   (12) TORQUE the union nut (8) to between 43 and 39 m.N (31.71 and 28.76 lbf.ft ) T.
Subtask 28-28-37-865-062-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
121VUFUEL/ACT AIR SOV/MAN/SPLY64QHJ20
121VUFUEL/ACT AIR SOV/AUTO/SPLY63QHJ19
121VUFUEL/ACT XFR VLV/MOT266QHJ18
121VUFUEL/ACT XFR VLV/MOT165QHJ17
121VUFUEL/INLET VLV MOT2 AUTO SP AFT 244QH2K16
121VUFUEL/INLET VLV MOT2 AUTO SP AFT 144QH1K15
121VUFUEL/INLET VLV/MOT1/AFT 284QHL29
121VUFUEL/INLET VLV/MOT1/MAN SPLY/AFT 146QHL28
121VUFUEL/HI/LVL/SPLY1QJL24
121VUFUEL/RFL/DFL/SPLY2QUL23
121VUFUEL/RFL/DFL/XFR/DEFUEL/VALVE1QUL22
121VUFUEL/ACT VENT VLV/MAN/SPLY62QHL21
121VUFUEL/ACT VENT VLV/AUTO/SPLY61QHL20
121VUFUEL/INLET VLV MAN CTL SPLY AFT 281QHL16
121VUFUEL/INLET VLV MAN CTL SPLY AFT 145QHL15
121VUFUEL/ACT/FUEL PUMP/SPLY25QHQ29
Subtask 28-28-37-720-052-A ** ON A/C NOT FOR ALL
C. Test
   (1) Do the functional test of ACT4 check valve (Ref. AMM TASK 28-28-00-720-006).
5. Close-up
Subtask 28-28-37-410-055-C ** 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) In the aft cargo-compartment, install the ACT AFT2 (Ref. AMM TASK 28-11-27-400-003).
   (3) Set CARGO COMPT LIGHT switch 8LU to the OFF position.
   (4) Remove the access platform(s).
   (5) Close aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).
Subtask 28-28-37-860-062-B ** ON A/C NOT FOR ALL
B. Put the aircraft back to the serviceable condition.
   (1) On refuel/defuel control panels 800VU and 801VU, on fuel control panel 40VU and on ACT fuel control panel 28VU:
     (a) Remove the WARNING NOTICE(S).
   (2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
[Rev.10 from 2021] 2026.04.02 06:17:57 UTC
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