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C. Referenced Information
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REFERENCE DESIGNATION
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71-13-00-010-040 Opening of the Fan Cowl Doors
78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance
78-31-49-991-322 Fig. 421
3. Job Set-up
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Subtask 78-31-49-941-096
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 78-31-49-010-133
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 78-31-49-040-121
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
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(Ref. Fig. 421/TASK 78-31-49-991-322) Subtask 78-31-49-020-093
A. Removal of the Lower Swivel Joints
(1) Put a container 1 USgal (4 L) under the lower hydraulic actuator.
(2) Disconnect the lower rod or the lower head supply hose from the actuator and let the hydraulic fluid drain into the container.
(3) Connect the lower head supply hose to the actuator.
(4) TORQUE the coupling nut to between 235 and 260 lbf.in (2.65 and 2.93 m.daN).
(5) Connect the lower rod supply hose to the actuator.
(6) TORQUE the coupling nut to between 130 and 150 lbf.in (1.46 and 1.69 m.daN).
(7) Remove the bolts and the nuts that attach the lower head shield to the forward frame.
(8) Remove the lower head shield from the forward frame.
(9) Disconnect the lower head or the lower rod supply hose from the swivel joint.
(10) Disconnect the head supply or the rod supply junction pipe from the swivel joint.
(11) Put protective covers on the hose and pipe ends. NOTE : Apply a witness line of finish paint EA4 blue 5991 (Material
____ No. CP2245) on all nuts and connections after they are torqued.
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Lower Swivel Joints
Figure 421/TASK 78-31-49-991-322
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TASK 78-31-49-400-006
Installation of the Lower Swivel Joints
WARNING : WEAR A FACE SHIELD WHICH IS RESISTANT TO HIGH PRESSURE JETS WHEN YOU
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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.
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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.
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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
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