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3. Job Set-up
__________ Subtask 78-31-49-941-078
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 78-31-49-010-112
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 78-31-49-040-103
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
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(Ref. Fig. 403/TASK 78-31-49-991-302) Subtask 78-31-49-020-076
A. Removal of the Lower Supply Pipe of the Left Latch
(1) Put a container 1 USgal (4 L) under the lower latch of the blocker door.
(2) Disconnect the lower supply pipe from the lower latch and let the hydraulic fluid drain into the container.
(3) Remove the bolt and the washer that attach the upper half clamp to the middle hydraulic line bracket.
(4) Remove the nut and the bolts that attach the double flange and the upper half clamps to the double hydraulic line bracket.
(5) Remove the bolt and the washer that attach the upper half clamp to the lower hydraulic line bracket.
(6) Disconnect the lower supply pipe from the upper latch.
(7) Remove the lower supply pipe from the forward frame.
(8) Put protective covers on the pipe ends.
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Lower Supply Pipe of the Left Latch
Figure 403/TASK 78-31-49-991-302- 12 (SHEET 1)
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Lower Supply Pipe of the Left Latch
Figure 403/TASK 78-31-49-991-302- 22 (SHEET 2)
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TASK 78-31-49-400-043
Installation of the Lower Supply 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 warning notice
No specific access platform 1 m (3 ft. 3 in.) R No specific Torque Wrench : range 5.00 to 35.00 lbf.in R (0.05 to 0.40 m.daN)
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)
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