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R (c) If the self locking nut torque is more than 31 lbf.in (0.35 R m.daN) but less than 49 lbf.in (0.55 m.daN), TORQUE the screws at R the running torque value and add 44 lbf.in (0.5 m.daN).
R (d) If the self locking torque is more than 49 lbf.in (0.55 m.daN), R remove the engine (Ref. TASK 71-00-00-000-042) and do the engine R shop repair procedure to replace the self locking nut (Ref. ESM R 722302300008). R R END OF SB 72-071 R
R POST SB 72-071
R (8) Before the installation, do a visual inspection of the panel (140) (Ref. TASK 72-23-00-210-004). Make sure that the two U-shaped seals
 (145) that are in stand-by on the two (non-removed and adjacent) fan aft acoustical panels are in good condition. If not, remove the panel(s) which hold the damaged seal(s) and install a new seal. See note below.
R NOTE : Refer to the PPIPC (72-23-00) when it is necessary to replace
____ R a seal (145). Because of the different strut sizes and clock
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R (9) Put the panel (140) in its approximate position on the fan case and R the T/R adapter ring. Engage one seal (145) first, against one of the R panel edges, then engage the other seal (145) against the opposite R panel edge. Make sure that the seals (145) are correctly compressed R between the panel and the adjacent struts around the panel.
R NOTE : It is not easy to get access to some (panel) clock locations.
____ R External aid will possibly be necessary to install the seal R (145) correctly between the panel and the related struss.
R (10) Push and hold the panel (140) against the fan case and attach it loosely with the seven srews (130).
 CAUTION : DO NOT EXCEED THE SPEED OF 200 RPM TO APPROACH ALL
_______ ACOUSTICAL PANEL SCREWS BY USING PNEUMATIC OR ELECTRICAL SCREW DRIVERS.
R NOTE : You must install the 3 longest screws (130) at the aft of the
____ R panel.
R (11) Measure the self locking nut torque of each nut when you start to R tighten the screw.
R CAUTION : DO NOT EXCEED THE SPEED OF 200 RPM TO APPROACH ALL
_______ R ACOUSTICAL PANEL SCREWS BY USING PNEUMATIC OR ELECTRICAL R SCREW DRIVERS.
R NOTE : When possible, start the torque with the screws in the center
____ R of the acoustical panels.
R NOTE : Make sure that the screws are not damaged, replace them if
____ R necessary.
R (a) If the self locking nut torque is less than 4.5 lbf.in (0.05 R m.daN) (Ref. TASK 72-23-00-400-043).
R (b) If the self locking nut torque is within 4.5 lbf.in (0.05 m.daN) R and 31 lbf (0.35 m.daN), TORQUE the screws to between 66 and 75 R lbf.in (0.74 and 0.84 m.daN)
R (c) If the self locking nut torque is more than 31 lbf.in (0.35 R m.daN) but less than 49 lbf.in (0.55 m.daN), TORQUE the screws at R the running torque value and add 44 lbf.in (0.5 m.daN).
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R R R R R R R (d) If the self locking torque is more than 49 lbf.in (0.55 m.daN), remove the engine (Ref. TASK 71-00-00-000-042) and do the engine shop repair procedure to replace the self locking nut (Ref. ESM 722302300008). END OF SB 72-071 
5. Close-up________
 Subtask 72-23-00-410-079
 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 72-23-00-440-059
 B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
 Subtask 72-23-00-410-088
 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 access platform(s).
 (3) Remove the warning notice(s).

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 TASK 72-23-00-000-027 Removal of the Fan Duct Panels
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
　
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