-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No.  CP2245 * finish paint EA4 blue 5991 (Ref. 70-30-00)
 C. 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 78-31-49-991-319 Fig. 418
 3. Job Set-up
__________ Subtask 78-31-49-941-093
 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).

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 Subtask 78-31-49-010-130

 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 78-31-49-040-118

 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041)
 4. Procedure
_________
 (Ref. Fig. 418/TASK 78-31-49-991-319)
 Subtask 78-31-49-020-090

 A. Removal of the Upper Swivel Joints
 (1) Put a container 1 USgal (4 L) under the lower hydraulic actuator.

 (2) Disconnect the lower head or the lower rod 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).

 NOTE : Apply a witness line of finish paint EA4 blue 5991 (Material
____ No. CP2245) on the nut and connection after they are torqued.
 (7) Loosen the bottom bolt which attach the upper head shield to the middle hydraulic line bracket. Remove the top bolt.

 (8) Remove the upper head shield from the forward frame.

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 Upper Swivel Joints
 Figure 418/TASK 78-31-49-991-319

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 (9) Disconnect the upper head or the upper rod supply hose from the
 swivel joint.

 (10) Remove the swivel joint from the head supply or rod supply junction pipe.

 (11) Remove and discard the packing (10) or (20).

 (12) Put protective covers on the hose and pipe ends.

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 TASK 78-31-49-400-003

 Installation of the Upper 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.

 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
______________________
　
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