(2) Remove the warning notice(s).

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 D. Do an operational test of the thrust reverser system from the CFDS
 (Ref. TASK 78-31-00-710-042)

 NOTE : As an alternative procedure, you can do this operational test
____ without the CFDS (Ref. TASK 78-31-00-710-043) or (Ref. TASK 78-31-00-710-043).
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 TUBES - THRUST REVERSER - REMOVAL/INSTALLATION

______________________________________________
 TASK 78-31-49-000-041
 Removal of the Return Pipe of the Left Latch
 WARNING : WEAR A FACE SHIELD WHICH IS RESISTANT TO HIGH PRESSURE JETS WHEN YOU
_______
 WORK ON PRESSURIZED SYSTEMS.

R WARNING : DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
_______ R - FLUSH IT AWAY WITH CLEAN WATER R - GET MEDICAL AID.
 CAUTION : USE 2 WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS.
_______
 ONE WRENCH TO HOLD THE UNION AND ONE TO LOOSEN OR TIGHTEN THE
 COUPLING NUT. THIS WILL PREVENT DAMAGE TO THE HARDWARE.

 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 USgal (4 L)
 No specific protective covers
 No specific warning notice
 No specific access platform 1 m (3 ft. 3 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors
 78-30-00-481-041 Make the Thrust Reverser Unserviceable for
 Maintenance
 78-31-49-991-300 Fig. 401

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 3. Job Set-up
__________ Subtask 78-31-49-941-075
 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 78-31-49-010-108
 B. Get Access
 (1) Open fan cowl doors: (Ref. TASK 71-13-00-010-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (2) Put the access platform in position. Subtask 78-31-49-040-100
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
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_________
 (Ref. Fig. 401/TASK 78-31-49-991-300) Subtask 78-31-49-020-074
 A. Removal of the Return Pipe of the Left Latch
 (1) Put a container 1 USgal (4 L) under the lower latch of the blocker door.

 (2) Disconnect the return pipe from lower latch and let the hydraulic fluid drain into the container.

 (3) Remove the nuts and the bolts that attach the flange and the upper half clamp to the upper hydraulic line bracket.

 (4) Remove the bolt and the washer that attach the upper half clamp to the middle hydraulic line bracket.

 (5) Remove the nut and the bolts that attach the double flange and the upper half clamps to the double hydraulic line bracket.

 (6) Remove the bolt and the washer that attach the upper half clamp to the lower hydraulic line bracket.
　
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