DOC AIRBUS | TSM A320FMAIN FUEL PUMP SYSTEM - TASK SUPPORTING DATA
** ON A/C NOT FOR ALL
1. General
The diagrams that follow are to help you do the trouble-shooting tasks.
For the Main Fuel Pump System:
** ON A/C NOT FOR ALL The diagrams that follow are to help you do the trouble-shooting tasks.
For the Main Fuel Pump System:
- Physical Layout see
Main Fuel Pump System - Physical Layout ** ON A/C NOT FOR ALL Main Fuel Pump System - Physical Layout ** ON A/C NOT FOR ALL - Block Diagram see Main Fuel Pump System - Block Diagram ** ON A/C NOT FOR ALL Main Fuel Pump System - Block Diagram ** ON A/C NOT FOR ALL
- Engine Feed Interface see Main Fuel Pump System - Engine Feed Interface ** ON A/C NOT FOR ALL Main Fuel Pump System - Engine Feed Interface ** ON A/C NOT FOR ALL
- Center Tank Pumps Basic Control Logic see
2. Maintenance Notices
The maintenance notices that follow are to give you an introduction or understanding of possible reported problems related to the main fuel pump system.
The maintenance notice(s) provide useful data for the maintenance staff.
The maintenance notices that follow are to give you an introduction or understanding of possible reported problems related to the main fuel pump system.
The maintenance notice(s) provide useful data for the maintenance staff.
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| ! MAINTENANCE NOTICE ! |
| ! MALFUNCTION (Deviation from the desired system operation) ! |
| ! FUEL PUMP CANISTER OUTLET VALVE (NRV) LEAKAGE/BACKFLOW ! |
| !-----------------------------------------------------------------------------! |
| ! ! |
| ! General Description Two operators have reported an unwanted fuel! |
| ! transfer from a wing tank to the center ! |
| ! tank. The cause of the transfer has been ! |
| ! traced to degradation of the piston assembly! |
| ! sealing elements within a center tank fuel ! |
| ! pump canister outlet valve. ! |
| ! ! |
| ! Action All future fuel pump canister outlet valves ! |
| ! will be produced with a sealing disk made of! |
| ! P.T.F.E. replacing the original disk ! |
| ! material of flourosilicone. ! |
| ! This action will be by amendment change ! |
| ! only. ! |
| ! ! |
| ! Reference TFU 282152006 ! |
| ! ! |
| ! Maintenance steps are necessary, ! |
| ! Ref. TASK 282100-810-840. ! |
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