(0.40 to 2.60 m.daN)
B. Consumable Materials
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REFERENCE DESIGNATION
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Material No. CP2101 USA MIL-T-5544
graphite grease (Ref. 70-30-00)
C. Referenced Information
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REFERENCE DESIGNATION
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72-23-00-280-005 Inspection of Forward Acoustical Panels
R 72-23-00-300-045 Replacement of the Riveted Self Locking Nuts for the
R Attachment of the Forward Acoustical Panels 72-23-00-400-043 Installation of Acoustical Panels Attachment Screw/Nut Locking 72-23-00-400-044 Installation of Acoustical Panels Attachment Screw Locking
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3. Job Set-up
__________
Subtask 72-23-00-860-061
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) 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.
4. Procedure
_________
Subtask 72-23-00-420-060
A. Install the fan forward acoustical panels as follows:
CAUTION : MAKE SURE THAT THE PS12 INSTRUMENTATION NIPPLE WHICH COMES OUT
_______ OF THE FAN INLET CASE IS CORRECTLY ENGAGED IN THE PANEL.
CAUTION : COATING SCREWS IS MANDATORY.
_______
R (1) Apply a layer of graphite grease (Material No. CP2101) to the threads R of all the screws that attach the acoustical panels and to the R contact faces below the screw heads. R
NOTE : If screws come from task 72-23-00-400-04400, do not apply RTV
____
on screw threads.
R (2) Do a visual inspection of the forward acoustical panel cup (Ref. TASK 72-23-00-280-005)
R (3) If panel cup is found pierced (Ref. TASK 72-23-00-400-044).
(4) Install the panel assy on the forward case, and attach it with 6
screws (80). R
R CAUTION : DO NOT EXCEED THE SPEED OF 200 RPM TO TORQUE ALL ACOUSTICAL
_______ R PANEL SCREWS BY USING PNEUMATIC OR ELECTRICAL SCREW R DRIVERS.
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R (5) 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 TORQUE ALL ACOUSTICAL
_______ R PANEL SCREWS BY USING PNEUMATIC OR ELECTRICAL SCREW R DRIVERS.
R
R NOTE : Whenever possible, start the torque with the screws in the
____ R center 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 more than 4.5 lbf.in (0.35
R m.daN), but less than 31 lbf.in (0.35 m.daN), TORQUE the screws
R to between 84 and 93 lbf.in (0.94 and 1.05 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
R at the running torque value and add 44 lbf.in (0.5 m.da).
R (d) If the self locking nut torque is more than 49 lbf.in (0.55
R m.daN) replace the self locking nut (Ref. TASK 72-23-00-300-045).
5. Close-up
________
Subtask 72-23-00-410-090
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Remove the access platform(s). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM ENGINE 发动机 1(121)
