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73-11-45-000-040 Removal of the Downstream Filter 73-11-45-400-040 Installation of the Downstream Filter 73-11-50-000-002 Removal of the Fuel Return Valve (FRV) 73-11-50-400-002 Installation of the Fuel Return Valve 73-11-60-000-002 Removal of the Integrated Drive Generator (IDG) Oil
Cooler Assembly 73-11-60-400-002 Installation of the Integrated Drive Generator (IDG)
Oil Cooler Assembly 73-11-70-000-002 Removal of the Burner Staging Valve (BSV) 73-11-70-400-002 Installation of the Burner Staging Valve (BSV) 73-21-10-000-002 Removal of the Hydromechanical Unit (HMU) 73-21-10-400-002 Installation of the Hydromechanical Unit (HMU) 73-31-10-000-002 Removal of the Fuel Flow Transmitter 73-31-10-400-002 Installation of the Fuel Flow Transmitter 79-21-20-000-002 Removal of the Main Oil/Fuel Heat Exchanger 79-21-20-400-002 Installation of the Main Oil/Fuel Heat Exchanger 73-11-10-991-306 Fig. 603
3. Job Set-up
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Subtask 73-11-10-941-060
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
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Subtask 73-11-10-010-070
B. Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
4. Procedure
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(Ref. Fig. 603/TASK 73-11-10-991-306)
Subtask 73-11-10-020-059
A. If not already removed, remove the fuel filter cartridge (10) from its
housing on the fuel pump (Ref. TASK 73-11-10-000-004). R
Subtask 73-11-10-210-053
R B. Do the inspection of the cartridge
(1) Examine the inner wall of the fuel filter housing (on the fuel pump) and the bottom of the fuel filter cover (20) to find out contaminants. For identification of the various types of contamination, see step C.
(2) Examine the removed fuel filter cartridge as follows:
(a) Take the filter cartridge (10) in both hands and put two pleats apart to show the contaminants at the bottom of these pleats. Do this at several locations around the cartridge.
(b) For identification of the various types of contamination, see step C.
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Examination of the Fuel Filter Cartridge for Contamination Figure 603/TASK 73-11-10-991-306- 12 (SHEET 1)
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Examination of the Fuel Filter Cartridge for Contamination Figure 603/TASK 73-11-10-991-306- 22 (SHEET 2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM 发动机燃油和控制 ENGINE FUEL AND CONTRO(38)
