(2) Disconnect the drain tube (25) from the lower junction drain tube
(20) and let the fluid drain into the container.
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Fan Case Drain Tubes Figure 402/TASK 71-73-49-991-301- 12 (SHEET 1)
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Fan Case Drain Tubes Figure 402/TASK 71-73-49-991-301- 22 (SHEET 2)
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(3) Remove the bolt (10) and the clamp (5) that attach the drain tube
(25) to the fan case channel.
(4) Remove the bolts (10), the nut (15) and the clamps (5) that attach the drain tube (25) to the fan case brackets.
(5) Disconnect the drain tube (25) from the fuel return valve drain tube (30).
(6) Remove the drain tube (25) from the engine.
(7) Put protective covers on the ends of the drain tubes (20), (25) and (30).
(8) Remove the container from below the engine. Subtask 71-73-49-020-069
C. Removal of the Lower Junction Drain Tube
(1) Put a container 1 l (0.25 USgal) below the lower junction drain tube
(20) to catch any fuel remaining in the tubes.
(2) Disconnect the drain tube (20) from the drain manifold module and let the fluid drain into the container.
(3) Disconnect the drain tube (20) from the upper junction drain tube (25).
(4) Remove the bolt (10), the nut (15) and the clamp (5) that attach the drain tube (20) to the fan case bracket.
(5) Remove the bolt (10), the nut (15) and the clamp (5) that attach the drain tube (25) to the clamp on the oil tank drain tube.
(6) Remove the drain tube (20) from the engine.
(7) Put protective covers on the drain manifold module and the ends of the drain tubes (20) and (25).
(8) Remove the container from below the engine.
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TASK 71-73-49-400-007
Installation of the Fan Case 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
71-73-49-991-301 Fig. 402
3. Job Set-up
__________
Subtask 71-73-49-860-051
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
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(Ref. Fig. 402/TASK 71-73-49-991-301) Subtask 71-73-49-420-053
A. Installation of the Fuel Return Valve Drain Tube
(1) Remove the protective covers from the fuel return valve and the ends of the drain tubes (25) and (30).
(2) Connect the drain tube (30) to the fuel return valve. Do not torque the coupling nut at this time.
(3) Connect the drain tube (30) to the upper junction drain tube (25). 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(110)
