(2)
C00047 Sealant, silicone RTV and compatible primer (CP2242) -MIL-A-46106
(3)
B01058 solvent, acetone, reagent grade (CP1039)
B. References
(1)
AMM 71-11-02/201, Fan Cowl Panels
(2)
AMM 78-31-00/201, Thrust Reverser System
(3)
CFMI Standard Practices Manual 70-66-12
C. Access
(1)
Location Zones
502/602 Fan Cowl - Left
503/603 Fan Cowl - Right
504/604 Thrust Reverser - Left
505/605 Thrust Reverser - Right
506/606 Engine
(2)
Access Panels
5737L/5746L Fan Cowl Panels - Left
5837R/5846R Fan Cowl Panels - Right
5739L/5738L Thrust Reverser - Left
5839R/5838R Thrust Reverser - Right
D. Install the Aft Acoustical Panel
S 034-018-C00
(1) If it is necessary, attach the two snap-fit fillet skins to the acoustical panel.
NOTE: The smaller skin attaches to the forward half of the panel.
____
S 424-019-C00
(2) Install the acoustical panel as follows (Fig. 403):
CAUTION: APPLY A LAYER OF GRAPHITE GREASE (CP2101) TO THE SCREWS.
_______ IF YOU DO NOT, DAMAGE TO THE EQUIPMENT CAN OCCUR.
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CFM56 ENGINES
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(a)
Apply grease, SAE AMS2518 (CP2101), to all screws that hold the acoustical panels as follows: 1) Apply grease, SAE AMS2518 (CP2101), to the screw threads
and contact faces below the screw heads.
(b)
Put the acoustical panel on the fan case.
1) Slide the applicable end of the panel under the overlap of the adjacent panel.
(c)
Align the screw holes in the acoustical panel with the holes in the fillet skins.
(d)
Install the screws in the acoustical panel.
NOTE: Panels with one notch have 14 screws and panels with
____
two notches have 16 screws.
CAUTION: IF YOU USE A PNEUMATIC OR ELECTRICAL SCREWDRIVER TO
_______ TIGHTEN THE ACOUSTICAL PANEL SCREWS, MAKE SURE THE SPEED IS NOT MORE THAN 200 RPM. IF THE SPEED IS MORE THAN 200 RPM, DAMAGE TO THE EQUIPMENT CAN OCCUR.
(e) As you tighten each screw, make sure the torque of the self locking nut is 4.5-31 pound-inches (0.5-3.5 Newton meters). 1) If the self locking nut torque is more than 31 pound-inches
(3.5 Newton meters), visually examine the installation to make sure the panel is seated correctly. a) If the panel is not correctly seated, find the cause
and correct it.
2) If the self locking nut torque is less than 4.5
pound-inches (0.5 Newton meters), do the steps below to
lock the acoustical panel screw.
(f) Lock the acoustical panel screw as follows: 1) Clean screws and nuts with solvent, (CP1039). 2) Apply sealant RTV (CP2242) to the screw threads and contact
faces below the screw heads.
CAUTION: IF YOU USE A PNEUMATIC OR ELECTRICAL SCREWDRIVER TO
_______ TIGHTEN THE ACOUSTICAL PANEL SCREWS, MAKE SURE THE SPEED IS NOT MORE THAN 200 RPM. IF THE SPEED IS MORE THAN 200 RPM, DAMAGE TO THE EQUIPMENT CAN OCCUR.
(g) Torque the screws as follows:
1) Tighten screws that go through kinel/black compound spacers (front and middle screws) to 66-75 pound-inches (7.5-8.5 Ne wton meters).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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