TASK 28-21-00-810-839
Fuel Pumps (All) - Failure
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
1. Possible Causes
_______________
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 28-21-00-710-001 Operational Test of the Wing-Tank Fuel Control
AMM 28-21-00-720-001 Functional Test of the Center-Tank Fuel Control
AMM 28-26-00-710-001 Operational Test of the Main Transfer System
3. Fault Confirmation
__________________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
A. Do the Operational Tests of the Wing-Tanks Fuel Control (Ref. AMM TASK 28-21-00-710-001) and the Center Tank Fuel Control (Ref. AMM TASK 28-21-00-720-001).
**ON A/C 301-399,
A. Do the Operational Tests of the Wing-Tanks Fuel Control (Ref. AMM TASK 28-21-00-710-001) and the Main Transfer System (Ref. AMM TASK 28-26-00-710-001).
**ON A/C ALL
4. Fault Isolation
_______________
A. If the warning is shown:
(1) Identify the fault symptoms for each of the pumps.
(2) Refer to the List of Faults in P. Block 101 for the applicable Task number.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page B222
Aug 01/05 CES
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
TASK 28-21-00-810-840
Unwanted Transfer Of Fuel From The Left Or Right Wing Tank To The Center Tank During Flight/Ground Phases When The Wing Tank Pumps Only Are In Operation
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
1. Possible Causes
_______________
- canister check valve, VALVE ASSY-OUTLET - Part of the CANISTER-PUMP, FUEL 84QM(85QM)
- left-wing surge-tank scavenge system
- jet adaptor assembly
- scavenge jet pump (66QM)
- check valve (37QM)
- LP fuel supply line
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 28-00-00-000-001 Removal of the Fuel Pipes AMM 28-00-00-400-001 Installation of the Fuel Pipes AMM 28-11-00-280-002 Fuel Tank Leak Checks AMM 28-11-00-790-002 Leak Test with Fuel of the Wing-Tank Outer and Inner
Cells
AMM 28-21-00-720-004 Functional Test of the Center-Tank
Fuel-Pump-Cannister Check-Valves AMM 28-21-00-790-001 Leak Test of the Main Fuel-Pump-System Pipelines AMM 28-21-43-000-003 Removal of the Fuel-Pump Check-Valve 37QM(38QM) AMM 28-21-43-400-003 Installation of the Fuel-Pump Check-Valve 37QM(38QM) AMM 28-21-52-000-004 Removal of the Check Valve of the Fuel Pump Canister AMM 28-21-52-400-004 Installation of the Check Valve of the Fuel Pump
Canister AMM 28-21-53-000-001 Removal of the Jet Pump 66QM(69QM), 67QM(68QM) AMM 28-21-53-000-003 Removal of the Jet Adaptor Assembly AMM 28-21-53-400-001 Installation of the Jet Pump 66QM(69QM), 67QM(68QM) AMM 28-21-53-400-003 Installation of the Jet Adaptor Assembly AMM 57-17-11-000-001 Removal of the Covers 147AZ (148AZ) PB 301
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page B223
201-299, 401-499, Aug 01/05 CES
3. Fault Confirmation
__________________
A. Test
(1) Read the MAINTENANCE NOTICE, FUEL PUMP CANISTER OUTLET VALVE (NRV) LEAKAGE/BACKFLOW (Ref. PB 301) before you do more steps.
(2) Record which side of the aircraft is the cause of the fuel migration:
- do a Functional Test of the applicable Center-Tank Fuel-Pump-Canister Check-Valve (Ref. AMM TASK 28-21-00-720-004).
NOTE : The functional test uses the related wing tank fuel pumps to
____ test the center tank canister check valves in the closed position. Only a very small fuel leakage rate of 3 litres per hour is permitted. The functional test referred to does not use the Fuel Quantity Indicating System (FQIS). This is because the ECAM tank fuel quantity values are given in increments (steps) of 10kg (20lb). To detect any fuel leakage with the FQIS at the permitted leak rate the wing tank fuel pumps would have to be left running for a minimum of approximately five (5) hours.
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