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 3. Job Set-up
__________ Subtask 78-31-49-941-095
 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 78-31-49-010-132
 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 a access platform in position. Subtask 78-31-49-040-120
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
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 4. Procedure
_________ (Ref. Fig. 420/TASK 78-31-49-991-321) Subtask 78-31-49-020-092
 A. Removal of the Hydraulic Junction Box
 (1) Put a container 1 USgal (4 L) under the hydraulic junction box.

 (2) Disconnect the supply pipe from the hydraulic junction box and let the hydraulic fluid drain into the container.

 (3) Remove the bolts that attach the hydraulic junction box the forward frame.

 (4) Remove the hydraulic junction box from the forward frame.

 (5) Put a protective cover on the supply pipe end.

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 Hydraulic Junction Box
 Figure 420/TASK 78-31-49-991-321

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 TASK 78-31-49-400-005

 Installation of the Hydraulic Junction Box
 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.

 CAUTION : MAKE SURE THERE IS NO UNWANTED MATERIAL IN THE PORTS AND ORIFICES OR
_______
 DAMAGE CAN OCCUR.

 CAUTION : YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS LUBRICANT.
_______
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
 No specific access platform 1 m (3 ft. 3 in.)
 No specific Torque Wrench : range 36.00 to 220.00 lbf.in

 (0.40 to 2.60 m.daN)
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2245 *
 finish paint EA4 blue 5991 (Ref. 70-30-00)
 Material No. CP2318 *
 blendixe RT342/2 (Ref. 70-30-00)

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 C. Referenced Information

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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
　
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