B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R AMM 28-24-41-000-001 Removal of the LP Fuel Valve 12QM(13QM)
R AMM 28-24-41-400-001 Installation of the LP Fuel Valve 12QM(13QM) AMM 28-24-51-000-001 Removal of the LP Fuel Valve Actuator AMM 28-24-51-400-001 Installation of the LP Fuel Valve Actuator ASM 26-21/02 ASM 28-24/01 ASM 76-12/01 AWM 28-24-02 AWM 94-06-02
3. Fault Confirmation
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A. Procedure.
NOTE : You can get more data from the:
____
- Aircraft Maintenance Manual (AMM) Chapters 26-12-00, 26-21-00, 28-24-00, and 76-12-00 - Description and Operation (D and O)
- Trouble Shooting Manual (TSM), Task Supporting Data, (Ref. P. Block 301)
- Aircraft Schematic Manual (ASM) (Ref. ASM 26-21/02), (Ref. ASM 28-24/01), and (Ref. ASM 76-12/01).
(1) On the ENG/APU FIRE PANEL (1WD) located on the overhead panel 20VU, make sure that the ENG 2 FIRE PUSH pushbutton switch (P/BSW) is in the closed and guarded position.
(2) On the ECAM Control Panel 11VU, push (in) the FUEL P/BSW to get the FUEL system page on the ECAM lower display unit (DU).
(3) Set the ENG/MASTER 2 (2KC) switch (panel 115VU) to ON.
(4) Examine the ENG 2 LP fuel valve symbol on the FUEL system page.
(5) Examine the see/feel indicator on the ACTUATOR-LP FUEL VALVE, ENG 2 (10QG). (Ref. P. Block 301).
(6) If the FUEL page shows the ENG 2 LP fuel valve symbol as green, in line, and the see/feel indicator on the ENG 2 LP fuel valve shows that the valve is open:
- maintenance steps are not necessary.
「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 ∞∞28-24-00∞∞∞∞∞∞∞∞∞∞Page 219
Nov 01/00 CES
4. Fault Isolation
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A. If the FUEL page shows the ENG 2 LP fuel valve symbol as an amber cross line, and the see/feel indicator on the ENG 2 LP fuel valve shows that the valve is closed. (Ref. P. Block 301).
(1) Examine for obvious signs of damage the items that follow:
- the actuator supply cables and end connectors
- the actuator electrical recepticals
- the cable looms next to the actuators.
NOTE : Right Wing Wire Routing (Ref. AWM 94-06-02).
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(2) Repair/replace all the unserviceable wiring and connectors.
(3) Do the test given in Para. 3.A.
(4) Disconnect the electrical supply cable connector 10QG-A from the ACTUATOR-LP FUEL VALVE, ENG 2 (10QG).
(5) With a multimeter do a test to see if the 28VDC supply is available at the connector 10QG-A between the pins as shown in the table below.
-----------------------------------------------------
| SIGNAL LINE | CONNECTOR 10QG-A PIN |
|---------------------------|-------------------------|
| MOTOR 1 OPEN 28VDC SUPPLY | A |
| MOTOR 1 GROUND/EARTH | E |
-----------------------------------------------------
(6) Disconnect the electrical supply cable connector 10QG-B from the ACTUATOR-LP FUEL VALVE, ENG 2 (10QG).
(7) With a multimeter do a test to see if the 28VDC supply is available at the connector 10QG-B between the pins as shown in the table below.
-----------------------------------------------------
| SIGNAL LINE | CONNECTOR 10QG-B PIN |
|---------------------------|-------------------------|
| MOTOR 2 OPEN 28VDC SUPPLY | A |
| MOTOR 2 GROUND/EARTH | E |
-----------------------------------------------------
(a) If the supply voltage at each connector, Steps (5), and (7) are correct:
1 Replace the ACTUATOR-LP FUEL VALVE, ENG 2 (10QG), (Ref. AMM
_ TASK 28-24-51-000-001), and (Ref. AMM TASK 28-24-51-400-001).
「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 ∞∞28-24-00∞∞∞∞∞∞∞∞∞∞Page 220
Feb 01/98 CES
2_ If the fault continues:
- replace the VALVE-LP FUEL, ENG 2 (13QM), (Ref. AMM TASK 28-
24-41-000-001), and (Ref. AMM TASK 28-24-41-400-001).
(b) If the supply voltage at each connector, Steps (5), and (7) are not correct:
1 Check/replace the CONTROL SWITCH-ENG/MASTER 2 (2KC), (part of
_ ENG PNL 115VU).
2 Do the test given in Para. 3.A.
_
3 Check/replace the ENG/APU FIRE PNL (1WD). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油2(40)
