RFuel LP Fuel Valve Engine 1 Does Not OpenFuel LP Fuel Valve Engine 1 Does Not Close Removal of the ENG/APU Fire Panel (1WD) Installation of the ENG/APU Fire Panel (1WD) Operational Test of Fire Control Pushbutton Switch Sub-functions Related to Engine Shut Down and Isolation (With External Air-supply Unit) Operational Test of Fire Control Pushbutton Switch Sub-funtions Related to Engine Shut Down and Isolation (With APU) Operational Test of the ENG 1(2) LP Fuel Valve 12QM (13QM)
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3. Fault Confirmation__________________
R A. Test
R
R (1) Do the Operational Test of the ENG 1(2) LP Fuel Valve 12QM (13QM)
R (Ref. AMM TASK 28-24-00-710-002).
R
R (a) If the ENG 1 LP Fuel Valve 12QM does not open, do (Ref. TASK 28-
24-00-810-801).
R (b) If the ENG 1 LP Fuel Valve 12QM does not close, do (Ref. TASK 28-
24-00-810-802).
R
R (2) If the Operational Test of the ENG 1 LP Fuel Valve 12QM operates
R correctly, do the Operational Test of the Fire Control P/BSW
R Sub-functions Related to Engine 1 Shut Down and Isolation (Ref. AMM
R TASK 26-21-00-710-004) or (Ref. AMM TASK 26-21-00-710-004).
R (3) If during step (2), when the ENG 1 FIRE P/BSW is first pushed (LP
R valve close command) the ACTUATOR-LP FUEL VALVE, ENG 1 (9QG):
R
R (a) Does not close, go to Para. 4.A.
R
R (b) Operates correctly, no maintenance steps are necessary.
R
R NOTE : You can get more data from the:____
R - the Description and Operation section of the Aircraft
R Maintenance Manual (AMM) Chapters 26-12-00, 26-21-00,
R 28-24-00, and 76-12-00
R - Trouble Shooting Manual (TSM), Task Supporting Data,
R (Ref. P. Block 301)
R - Aircraft Schematic Manual (ASM) (Ref. ASM 26-21/02)
R (Ref. ASM 28-24/01) and (Ref. ASM 76-12/01).
4. Fault Isolation_______________
R A. Procedure
R (1) Do a check of (Ref. ASM 28-24/01) and replace, if necessary, the R ENG/APU FIRE PNL (1WD) (Ref. AMM TASK 26-12-12-000-001) and (Ref. AMM R TASK 26-12-12-400-001).
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R (2) If the fault continues, do a check of the aircraft wiring (Ref. ASM
R 28-24/01) between:
R - the connector 1WD-A, pin V and the ACTUATOR-LP FUEL VALVE, ENG 1
R connector 9QG-A, pin C (MOT 1, 9QG close supply)
R - the connector 1WD-B, pin <C and the ACTUATOR-LP FUEL VALVE, ENG 1
R connector 9QG-B, pin C (MOT 2, 9QG close supply).
R
(3) Repair all the unserviceable wiring and connectors.
(4) Do the test given in Para. 3.A.
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TASK 28-24-00-810-804
Fuel LP Fuel Valve Engine 1 Status Is Not Available On The FUEL System Page
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
WARNING : WHEN YOU WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST EQUIPMENT
_______ THAT IS APPROVED TO EUROPEAN SPECIFICATION EN50-020. THE USE OF TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
1. Possible Causes
_______________
- ACTUATOR-LP FUEL VALVE, ENG 1 (9QG)
- SDAC-1 (1WV1)
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