(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).
(3) Make sure that the access platform is in position.
Subtask 78-31-49-010-157
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
Subtask 78-31-49-040-145
C. Make sure that the thrust reverser is unserviceable (Ref. TASK 78-30-00-481-041).
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4. Procedure
_________
(Ref. Fig. 420/TASK 78-31-49-991-321)
Subtask 78-31-49-420-091
A. Installation of the Hydraulic Junction Box
(1) Remove the protective covers from the supply pipe.
(2) Apply a layer of blendixe RT342/2 (Material No. CP2318) to the mating surface of the hydraulic junction box.
(3) Attach the hydraulic junction box to the forward frame with the bolts.
(4) TORQUE the bolts to between 70 and 80 lbf.in (0.79 and 0.90 m.daN).
(5) Connect the supply pipe to the hydraulic junction box.
(6) TORQUE the coupling nut to between 130 and 150 lbf.in (1.46 and 1.69 m.daN).
NOTE : Apply a witness line of finish paint EA4 blue 5991 (Material
____ No. CP2245) on all nuts and connections after they are torqued.
5. Close-up
________
Subtask 78-31-49-440-096
A. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
Subtask 78-31-49-410-108
B. 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, 432AR
FOR 1000EM2
447AL, 448AR
(3) Remove the access platform(s).
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(4) Remove the warning notice(s).
Subtask 78-31-49-710-079
C. Bleed the air from the thrust reverser hydraulic system. (Ref. TASK 78-30-00-710-040)
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TASK 78-31-49-000-006
Removal of the Lower Swivel Joints
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.)
No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN)
No specific Torque Wrench : range 96.00 to 900.00 lbf.in
(1.00 to 10.00 m.daN)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2245 *
finish paint EA4 blue 5991 (Ref. 70-30-00)
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