(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.
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(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
Subtask 71-73-49-010-055
B. Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
4. Procedure
_________ (Ref. Fig. 403/TASK 71-73-49-991-302) Subtask 71-73-49-020-054
A. Removal of the Fuel Pump Drain Tubes
(1) Put a container 1 l (0.25 USgal) below the drain reservoir module to catch any fuel remaining in the tubes.
(2) Disconnect the fuel pump drain tube (20) from the drain reservoir module and let the fluid drain into the container.
(3) Remove the bolt (10), the nut (15) and the clamp (5) that attach the drain tube (20) to the bracket on the transfer gearbox.
(4) Remove the bolt (10), the nut (15) and the clamp (5) that attach the drain tube (25) to the clamp on the heat exchanger drain tube (30).
(5) Disconnect the drain tube (25) from the drain tube (20).
(6) Remove the drain tube (20) from the engine.
(7) Disconnect the drain tube (25) from the fuel pump.
(8) Remove the drain tube (25) from the engine.
(9) Put protective covers on the drain reservoir module, the fuel pump, and the drain tubes (20) and (25).
(10) Remove the container from below the drain reservoir module.
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Fuel Pump Drain Tubes Figure 403/TASK 71-73-49-991-302
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TASK 71-73-49-400-008
Installation of the Fuel Pump Drain Tubes
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific warning notice
R No specific Torque Wrench : range 5.00 to 35.00 lbf.in
R (0.05 to 0.40 m.daN) No specific Torque Wrench : range 96.00 to 900.00 lbf.in
(1.00 to 10.00 m.daN)
B. Referenced Information
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REFERENCE DESIGNATION
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71-13-00-010-040 Opening of the Fan Cowl Doors
71-13-00-410-040 Closing of the Fan Cowl Doors
71-73-49-991-302 Fig. 403
3. Job Set-up
__________
Subtask 71-73-49-860-052
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a warning notice is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a warning notice is in position to tell persons not to energize the FADEC 1(2).
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B. Make sure that the fan cowl doors are open: (Ref. TASK 71-13-00-010-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
4. Procedure
_________
(Ref. Fig. 403/TASK 71-73-49-991-302) Subtask 71-73-49-420-054
A. Installation of the Fuel Pump Drain Tubes
(1) Remove the protective covers from the drain reservoir module, the fuel pump, the tubes (20) and (25).
(2) Connect the fuel pump drain tube (25) to the fuel pump. Do not torque the coupling nut at this time. 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 动力装置 POWER PLANT 2(112)
