W DOC AIRBUS | AMM A320F

Installation of the LP Fuel Valve

TASK 28-24-41-400-001-A
Installation of the LP Fuel Valve

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.
FIN: 12QM
FIN: 13QM
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
SAFETY BARRIER(S)
No specific
Torque wrench: range to between 0.17 and 0.13 m.daN (15.04 and 11.50 lbf.in ) T
No specific
Torque wrench: range to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.01ABA1)
Turbine Fuel-- Kerosene -
(Material No.03FAB1)
Mineral Oil base Grease-- Vaseline or Petrolatum -
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.14QFB1)
Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
10
ORING
AIPC 28-21-05-24-380
9
ORING
AIPC 28-21-05-24-390
20
ORING
AIPC 28-21-05-25-070
21
ORING
AIPC 28-21-05-25-080
21
ORING
AIPC 28-21-85-20-050
10
ORING
AIPC 28-21-85-20-520
20
ORING
AIPC 28-21-85-20-530
9
ORING
AIPC 28-21-85-20-530
7
ORING
AIPC 28-24-05-01-120
7
ORING
AIPC 28-24-85-01-100
 D. Referenced Information
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 20-28-00-912-803-A
Bonding Surface Preparation
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 28-10-00-910-001-A
Safety Procedures When You Do Work in a Fuel Tank
TASK 28-24-00-710-002-A
Operational Test of the ENG 1(2) LP Fuel Valve
TASK 28-24-41-000-001-A
Removal of the LP Fuel Valve
TASK 28-24-51-400-001-A
Installation of the LP Fuel Valve Actuator
TASK 28-25-00-650-001-A
Pressure Defuel
TASK 28-25-00-869-001-A
Fuel Transfer
TASK 57-41-37-000-003-A
Removal of the Access Panel
TASK 57-41-37-400-003-A
Installation of the Access Panel
F LP Fuel Valve 12QM (13QM)
3. Job Set-up
Subtask 28-24-41-941-055-A
A. Safety Precautions
   (1) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank.
   (2) Make sure that the SAFETY BARRIER(S) are in position.
Subtask 28-24-41-860-050-A
B. Aircraft Maintenance Configuration
   (1) Make sure that there is not more than approximately 3500 kg (7716.1770 lb) of fuel in the applicable tank. If necessary, move the fuel to the opposite tank (Ref. AMM TASK 28-25-00-869-001) or defuel (Ref. AMM TASK 28-25-00-650-001).
   (2) Make sure that the aircraft electrical circuits are de-energized (Ref. AMM TASK 24-41-00-862-002).
   (3) Make sure that the access platform is below the applicable access panel 522AT(622AT).
   (4) Make sure that the access panel 522AT(622AT) has been removed (Ref. AMM TASK 57-41-37-000-003).
Subtask 28-24-41-865-054-A
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUFUEL/LP VALVE/MOT1/ENG22QGA09
49VUFUEL/LP VALVE/MOT1/ENG11QGA08
** ON A/C NOT FOR ALL
121VUFUEL/CTR TK/PUMP2 SPLY30QAP26
121VUFUEL/CTR TK/PUMP1 SPLY29QAP23
** ON A/C ALL
121VUFUEL/LP VALVE/MOT2/ENG24QGM26
121VUFUEL/LP VALVE/MOT2/ENG13QGM25
121VUFUEL/L WING TK/PUMP2 SPLY7QAN26
121VUFUEL/L WING TK/PUMP1 SPLY1QAN23
121VUFUEL/R WING TK/PUMP2 SPLY8QAQ26
121VUFUEL/R WING TK/PUMP1 SPLY2QAQ23
4. Procedure
Subtask 28-24-41-560-050-B
A. Preparation for a Replacement Component
   (1) If removed, install the nut (19) and the circlip (4).
Subtask 28-24-41-420-052-B
B. Preparation for Installation
   (1) Clean the component interface and/or the adjacent area with a clean 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) Remove the blanking cap from the end of the pipe (1).
   (5) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) or Mineral Oil base Grease-- Vaseline or Petrolatum - (Material No.03FAB1) to the new AIPC 28-24-05-01-120 ORING (7) or AIPC 28-24-85-01-100 ORING (7), then install the new O-ring (7) on the projection of the LP fuel valve (18).
Subtask 28-24-41-420-051-B
C. Installation of the LP Fuel Valve 12QM(13QM)
   (1) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
   (2) Remove the cap from the mounting plate (8).
   (3) Install the LP fuel valve (18) on the mounting plate (8).
   (4) Install the bolts (5).
   (5) TORQUE the bolts (5) to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in ) T.
   (6) Install the washer (16) and the bolt (17).
   (7) TORQUE the bolt (17) to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in ) T.
   (8) Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to the new AIPC 28-21-85-20-050 ORING (21) or AIPC 28-21-05-25-080 ORING (21) and the new AIPC 28-21-05-25-070 ORING (20) or AIPC 28-21-85-20-530 ORING (20).
   (9) Install the new O-rings (21) and (20) on the end of the pipe (1).
   (10) Tighten the nut (19) on the connector (3).
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
   (11) Safety the nuts (19) and (2) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
   (12) Install the bonding strips (13) and (14), the bolt (15) and the nut (12).
   (13) TORQUE the nut (12) to between 0.17 and 0.13 m.daN (15.04 and 11.50 lbf.in ) T.
   (14) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
   (15) Install the LP fuel-valve actuator (Ref. AMM TASK 28-24-51-400-001), but do not close access panel 522AT(622AT).
Subtask 28-24-41-861-051-A
D. Energize the Electrical Circuits
   (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 28-24-41-865-055-A
E. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUFUEL/LP VALVE/MOT1/ENG22QGA09
49VUFUEL/LP VALVE/MOT1/ENG11QGA08
** ON A/C NOT FOR ALL
121VUFUEL/CTR TK/PUMP2 SPLY30QAP26
121VUFUEL/CTR TK/PUMP1 SPLY29QAP23
** ON A/C ALL
121VUFUEL/LP VALVE/MOT2/ENG24QGM26
121VUFUEL/LP VALVE/MOT2/ENG13QGM25
121VUFUEL/L WING TK/PUMP2 SPLY7QAN26
121VUFUEL/L WING TK/PUMP1 SPLY1QAN23
121VUFUEL/R WING TK/PUMP2 SPLY8QAQ26
121VUFUEL/R WING TK/PUMP1 SPLY2QAQ23
Subtask 28-24-41-860-051-A
F. Aircraft Maintenance Configuration
   (1) Refuel the applicable tank as necessary (Ref. AMM TASK 12-11-28-650-003).
   (2) On panel 40VU:

  • for the left wing, push (in) the L TK PUMPS 1 and 2 pushbutton switches

  • for the right wing, push (in) the R TK PUMPS 1 and 2 pushbutton switches.
Subtask 28-24-41-710-050-A
G. Test
   (1) Do an operational test of the LP fuel valve (Ref. AMM TASK 28-24-00-710-002).
NOTE: Let the LP fuel valve stay open for 10 minutes (to let the fuel get through the LP fuel valve, for the leak check).
   (2) Examine these areas for leaks:
  • the LP fuel-valve to mounting-plate interface
  • after 10 minutes, the pylon drain hole.
Subtask 28-24-41-220-050-B
H. Detail Visual Inspection of the LP Fuel Valve and the Mounting Plate

   (1) Do the detail visual inspection of the LP fuel valve (18) and the mounting plate (8) as follows:
     (a) Make sure that :
       1 The LP fuel-valve face-plate is correctly installed and is a flush fit with the mounting plate (8) on the front spar.
       2 The clearance between the LP fuel-valve face-plate and its mounting plate (8) is not more than 0.254 mm (0.0100 in.).
       3 There are no signs of the O-ring (7) caught between the LP fuel-valve face-plate and the mounting plate (8) on the front spar.
       4 You cannot see signs of the fuel leakage.
       5 All the bolts (5) and (17) are correctly installed and there is no clearance between the bolt head and the LP fuel-valve flange.
   (2) If the inspection that is completed is not correct, do the steps that follow:
     (a) Remove the LP fuel valve (18) (Ref. AMM TASK 28-24-41-000-001).
     (b) Do the inspection of the mounting plate and look for damage on the:
  • Front face and the bolt holes
  • Chamfered edge
  • Inner face.
     (c) If there is damage, replace the mounting plate (8) as follows:
       1 Loosen and remove the nuts (11).
       2 Remove the mounting plate (8) and discard the O-rings (9) and (10).
       3 Apply Turbine Fuel-- Kerosene - (Material No.01ABA1) to the new AIPC 28-21-05-24-390 ORING (9) or AIPC 28-21-85-20-530 ORING (9) and AIPC 28-21-05-24-380 ORING (10) or AIPC 28-21-85-20-520 ORING (10).
       4 Install the new O-rings (9) and (10) on the projection of the mounting plate (8).
       5 Install the new mounting plate (8) with the inserts (6) installed in the bolt holes.
       6 Install the nuts (11).
       7 TORQUE the nuts (11) to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in ) T
     (d) If there is no damage, replace the O-ring (7).
     (e) Go to step 4. A.
   (3) If the inspection that is completed is correct, do a torque check of the bolts (5) and (17) and if necessary, TORQUE them to between 0.8 and 0.7 m.daN (70.80 and 61.95 lbf.in ) T.
5. Close-up
Subtask 28-24-41-869-055-A
A. Aircraft Configuration
   (1) On panel 40VU:

  • for the left wing, release (out) the L TK PUMPS pushbutton switches 1 and 2

  • for the right wing, release (out) the R TK PUMPS pushbutton switches 1 and 2.
Subtask 28-24-41-410-053-A
B. Close Access
   (1) Install the access panel 522AT(622AT) (Ref. AMM TASK 57-41-37-400-003).
Subtask 28-24-41-942-051-A
C. 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 WARNING NOTICE(S).
   (4) Remove the access platform(s).
   (5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.02 06:17:34 UTC
"WTRUIB" 2025