TASK 78-30-00-680-002 Drain the Pipes of the Latch System
 1. Reason for the Job

__________________
 Self Explanatory

 2. Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
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No specific container 1 USgal (4 l)
 No specific warning notice
 No specific access platform 1 m (3 ft. 3 in.)
 No specific Torque Wrench : range 0.20 to 3.60 m.daN

 (2.00 to 26.00 lbf.ft)
 B. Referenced Information
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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 78-30-00-081-041 Make the Thrust Reverser Serviceable after
 Maintenance 78-30-00-481-041 Make the Thrust Reverser Unserviceable for Maintenance
 3. Job Set-up
__________ Subtask 78-30-00-941-055
 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.

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 (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 78-30-00-010-054
 B. Get Access
 (1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (2) Put an access platform in position.
 Subtask 78-30-00-040-052

 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041)
 4. Procedure
_________
 Subtask 78-30-00-680-051

 A. Drain the pipes of the latch system.
 NOTE : The procedure is the same for LH and RH side.

____
 (1) Put a container 1 USgal (4 l) under the lower and upper blocker door latches.

 (2) Disconnect the nuts of the return and supply pipes from the lower and upper blocker door latches. Let the hydraulic fluid drain completely from the pipes.

 (3) Reconnect the nuts of the return and supply pipes on the lower and upper blocker door latches.

 (4) TORQUE the nut to between 1.5 and 1.7 m.daN (11.06 and 12.53 lbf.ft).

 (5) Remove the container.

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________ Subtask 78-30-00-440-052
 A. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041). Subtask 78-30-00-410-054
 B. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 (2) Remove the access platform(s).

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

 (4) Remove the warning notice(s).

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 THRUST REVERSER - DEACTIVATION/REACTIVATION

___________________________________________
 TASK 78-30-00-040-040
 Deactivation of the Thrust Reverser System
 CAUTION : NEVER BLANK OFF HYDRAULIC CONTROL UNIT (HCU) RETURN HOSE AND RELEASE
_______ AIRCRAFT (EVEN IF THRUST REVERSER IS DEACTIVATED). THIS ACTION MAY RESULT IN THRUST REVERSER SYSTEM PRESSURIZATION.
 1. Reason for the Job
__________________
 Refer to the MMEL TASK: 78-30-01
 Thrust Reverser

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
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