(4) Disconnect the drain tube (5) from the hydro mechanical unit.
(5) Remove the HMU drain tube (5) from the engine.
(6) Put protective covers on the HMU and the drain tubes.
(7) Remove the container from below the drain mast. R **ON A/C 062-099, 103-149, 151-199, 203-299, 301-399, 401-499,
Subtask 71-73-49-020-058-A
A. Removal of the Hydro Mechanical Unit (HMU) Drain Tube
(1) Put a container 1 l (0.25 USgal) below the drain mast to catch any fluid remaining in the tube.
(2) Disconnect the HMU drain tube (5) from the heat exchanger drain tube and let the fluid drain into the container.
(3) Remove the bolt (25), the washers (30) and (35), the nut (40) and the clamp that attach the HMU drain tube (5) to CFMI support tube bracket.
(4) Remove the bolt (15), the nut (20) and the clamp (10) that attach the drain tube (5) to the bracket.
(5) Disconnect the drain tube (5) from the hydro mechanical unit.
(6) Remove the HMU drain tube (5) from the engine.
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E E Aug 01/05 E E ECES E F 『 E C F M E E E E 56-5B E E E (7) Put protective covers on the HMU and the drain tubes.
(8) Remove the container from below the drain mast.
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TASK 71-73-49-400-027
Installation of the Hydro Mechanical Unit (HMU) Drain Tube
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
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No specific warning notice
No specific Torque Wrench : range 5.00 to 35.00 lbf.in
(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
-------------------------------------------------------------------------------
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
**ON A/C 001-049, 051-061, 101-102, 201-202,
71-73-49-991-306 Fig. 407
R **ON A/C 062-099, 103-149, 151-199, 203-299, 301-399, 401-499,
71-73-49-991-306-A Fig. 407A
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3. Job Set-up
__________
Subtask 71-73-49-860-056
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).
Subtask 71-73-49-010-074
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
_________
**ON A/C 001-049, 051-061, 101-102, 201-202,
(Ref. Fig. 407/TASK 71-73-49-991-306)
R **ON A/C 062-099, 103-149, 151-199, 203-299, 301-399, 401-499,
(Ref. Fig. 407A/TASK 71-73-49-991-306-A)
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Subtask 71-73-49-420-058
A. Installation of the Hydro Mechanical Unit (HMU) Drain Tube
(1) Remove the protective covers from the Hydro Mechanical Unit and the drain tubes.
(2) Connect the HMU drain tube (5) to the HMU. Do not torque the coupling nut at this time.
(3) Connect the HMU drain tube (5) to the heat exchanger drain tube. Do not torque the coupling nut at this time.
(4) Attach the drain tube (5) to the clamp on the electrical harness with the clamp (10), the bolt (15) and the nut (20).
(5) Make sure that the HMU drain tube (5) is aligned correctly on the engine. 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(119)
