Maintenance
78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance
78-36-00-010-040 Opening of the Thrust Reverser Doors
78-36-00-410-040 Closing of the Thrust Reverser Doors
75-31-20-991-302 Fig. 501
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3. Job Set-up
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Subtask 75-31-20-941-053
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 75-31-20-010-058
B. Get Access
(1) Open fan cowl doors: (Ref. TASK 71-13-00-010-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
Subtask 75-31-20-040-051
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
Subtask 75-31-20-010-059
D. Open the thrust reverser doors: (Ref. TASK 78-36-00-010-040)
FOR 1000EM1
451AL, 452AR
FOR 1000EM2
461AL, 462AR
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4. Procedure
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(Ref. Fig. 501/TASK 75-31-20-991-302)
Subtask 75-31-20-010-060
A. Remove the fan duct panel between struts No.3 and No.4 (panel at the 2:30 o'clock position) or the fan duct panel between struts No.4 and No.5 (panel at the 3:30 o'clock position) (Ref. TASK 72-23-00-000-027).
Subtask 75-31-20-820-051
R B. Set the VBV doors to the Closed position. Use WRENCH - VBV MANUAL CONTROL R (856A2501) at 2:30 or at 3:30 o'clock to do this.
Subtask 75-31-20-410-058
C. Install the fan duct panels at the 2:30 or 3:30 o'clock (Ref. TASK 72-23-00-400-027).
5. Close-up
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Subtask 75-31-20-410-059
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close thrust reverser cowl doors: (Ref. TASK 78-36-00-410-040) FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
Subtask 75-31-20-440-051
B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
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R Setting of the VBV System to the Closed Position Figure 501/TASK 75-31-20-991-302
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C. Close Access
(1) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
(2) Remove the warning notice(s).
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FLEXIBLE SHAFT ASSEMBLY - REMOVAL/INSTALLATION
______________________________________________
TASK 75-31-30-000-001
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