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

 3. Job Set-up
__________
 Subtask 72-23-00-941-093
 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 72-23-00-010-116

 B. Get Access
 (1) Open the fan cowls: (Ref. TASK 71-13-00-010-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (2) Put an access platform in position.

 Subtask 72-23-00-040-071
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 72-23-00-010-117
 D. Open the thrust reverser doors: (Ref. TASK 78-36-00-010-040)
 FOR 1000EM1
 451AL, 452AR
 FOR 1000EM2
 461AL, 462AR

 4. Procedure
_________
 Subtask 72-23-00-420-069
 A. Locking of Acoustical Panels.
R (1) Remove the screws if the torque of the related self locking nut is R less than the AMM limits.
R (2) Clean the screws and the nuts with acetone (Material No. CP1039) or R stoddard solvent (Material No. CP2011) or ardrox 552 (Material No. R CP2559) or turco ind 79 (Material No. CP2560) or mag-chem teksol R (Material No. CP2566) or degreasol 99 R (Material No. CP2584) or mag-R chem skysol (Material No. CP2656) or isopropyl alcohol (Material No.
 CP1041). R
R (3) Apply RTV (Material No. CP2242) or equivalent on screw threads and R below the screw heads.
 CAUTION : DO NOT EXCEED THE SPEED OF 200 RPM TO APPROACH AND TORQUE
_______ ALL ACOUSTICAL PANEL SCREWS BY USING PNEUMATIC OR ELECTRICAL SCREW DRIVERS.
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 E E May 01/05 E E ECES ER (4) Re-install the acoustical panels and screws.

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R (a) TORQUE the screws of the forward and mid panels to between 84 and 93 lbf.in (0.94 and 1.05 m.daN)
R (b) TORQUE the screws of the aft panels to between 66 and 75 lbf.in
 (0.74 and 0.84 m.daN).
 5. Close-up
________
 Subtask 72-23-00-410-107

 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 (2) Close the thrust reverser doors (Ref. TASK 78-36-00-410-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR

 Subtask 72-23-00-440-065
 B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041)
 Subtask 72-23-00-410-108

 C. Close Access
 (1) Close the fan cowls: (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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 TASK 72-23-00-400-044

 Installation of Acoustical Panels Attachment Screw Locking
 1. Reason for the Job
__________________
R This procedure tells you how to lock acoustical panel screws when the panel R cup examined has a hole caused by the screw head. This procedure applies to R all acoustical panel screws: fwd, mid and aft. It is necessary to replace R panels with damaged cups re-installed by this procedure at the subsequent R shop visit.
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
　
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