Maintenance
78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance
78-30-00-710-040 Thrust Reverser Hydraulic System Bleed Procedure
78-31-49-991-309 Fig. 408
78-31-49-991-310 Fig. 409
3. Job Set-up
__________
Subtask 78-31-49-860-089
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a warning notice is in position to tell persons not to start the engine.
(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 78-31-49-010-146
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 78-31-49-040-136
C. Make sure that the thrust reverser is unserviceable (Ref. TASK 78-30-00-481-041).
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4. Procedure
_________
(Ref. Fig. 408/TASK 78-31-49-991-309, 409/TASK 78-31-49-991-310)
Subtask 78-31-49-420-080
A. Installation of the Rod Supply Pipe of the Left Actuator
(1) Remove the protective covers from the pipe ends.
(2) Put the rod supply pipe in position on the forward frame. (Ref. Fig. 408/TASK 78-31-49-991-309)
(3) Attach the rod supply pipe to the interface bracket with the nut.
(4) TORQUE the nut to between 370 and 410 lbf.in (4.18 and 4.63 m.daN).
(5) Connect the rod supply pipe to the middle hydraulic line bracket.
(6) TORQUE the coupling nut to between 235 and 260 lbf.in (2.65 and 2.93 m.daN).
(7) Connect the interface hydraulic hose to the rod supply hose.
(8) TORQUE the coupling nut to between 270 and 300 lbf.in (3.05 and 3.39 m.daN).
(9) Attach the flange and the upper half clamp to the upper hydraulic line bracket with the bolts and the nuts.
(10) Position the two half clamps on the electrical harness and the rod supply pipe. Install the bolt, the washer, the clamp and the nut.
(11) TORQUE the nut to between 27 and 30 lbf.in (0.30 and 0.33 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.
Subtask 78-31-49-220-051
B. Make sure that the clearance between the rod supply pipe and the
hold-open rod is 0.189 in. (4.8 mm).
(Ref. Fig. 409/TASK 78-31-49-991-310)
(1) If the clearance is correct, do paragraph close up.
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Rod Supply Pipe Clearance
Figure 409/TASK 78-31-49-991-310
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(2) If the clearance is not correct, loosen the interface hydraulic hose and the two nuts of the rod supply pipe.
(3) Position the rod supply pipe to get clearance with the hold-open rod.
(4) TORQUE the nuts to the values given above.
5. Close-up
________ Subtask 78-31-49-440-084
A. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041). Subtask 78-31-49-410-093
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, 438AR
FOR 1000EM2
447AL, 448AR
(3) Remove the access platform(s).
(4) Remove the warning notice(s). Subtask 78-31-49-710-074
C. Bleed the air from the thrust reverser hydraulic system. (Ref. TASK 78-30-00-710-040)
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