(7) Make sure that the drain tube (35) is aligned correctly on the engine.

 (8) TORQUE the nuts (30) to between 20 and 25 lbf.in (0.22 and 0.28 m.daN).

 (9) Torque the drain tubes and coupling nuts. CAUTION : USE A SECOND WRENCH TO HOLD THE FITTINGS WHEN YOU

_______ LOOSEN/TIGHTEN THE TUBE COUPLING NUTS. THIS PREVENTS DAMAGE TO THE TUBES.
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 (a) TORQUE the drain tubes (5), (10) and (35) coupling nuts to between 200 and 250 lbf.in (2.26 and 2.82 m.daN).
 5. Close-up
________
 Subtask 71-73-49-410-058
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 (2) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (3) Remove the warning notice(s).

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 TASK 71-73-49-000-027
 Removal 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
 -------------------------------------------------------------------------------
No specific container 1 l (0.25 USgal)
 No specific protective covers
 No specific warning notice

 B. Referenced Information -------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------71-13-00-010-040 Opening 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 71-73-49-941-059

 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).

 Subtask 71-73-49-010-059
 B. Open the fan cowl doors: (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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 Hydro Mechanical Unit (HMU) Drain Tube
 Figure 407/TASK 71-73-49-991-306

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 Hydro Mechanical Unit (HMU) Drain Tube
 Figure 407A/TASK 71-73-49-991-306-A

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 **ON A/C 001-049, 051-061, 101-102, 201-202,

 Subtask 71-73-49-020-058
 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 (15), the nut (20) and the clamp (10) that attach the drain tube (5) to the bracket.
　
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