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TM 10-4320-348-14
b.
Inspection.
(1)
Inspect the riveted information plates on the sound enclosure rear panel assembly. Damaged information
plates must be removed and replaced. If any rivets are missing from undamaged information plates, the
missing rivets must be replaced.
(2)
Inspect the acoustical foam (17) within the sound enclosure rear panel assembly (11). If acoustical foam
blocks air flow, or is tom, scarred, or shows signs of contacting the hot engine surface, it must be replaced.
(3)
Examine electrical connector for damage. Replace if damaged (see para. 4.21).
c.
Repair.
WARNING
Wear safety goggles during blind rivet removal to protect your eyes from flying metal
chips.
(1)
Drill out all rivets (17) until damaged information plate (18) can be removed.
(2)
Replace damaged information plate.
(3)
Use hand blind riveter and M24243/1B403 rivets to attach new information plate.
(4)
Repair is limited to replacement of defective parts.
WARNING
Toluol solvent is potentially dangerous. Avoid repeated and prolonged breathing of
vapors and skin contact. Do not use near open flame, arcing equipment, or other
ignition sources. Always wear safety goggles for eye protection from splashing.
Gloves should be worn during use of solvent.
(5)
To remove damaged acoustical foam (17), pull the acoustical foam firmly away from sound enclosure rear
panel assembly. Approximately 1/8 inch of acoustical foam and adhesive backing will remain.
(6)
Apply Toluol solvent to acoustical foam and backing to thoroughly wet surface area.
(7)
Let set for 2 to 3 minutes.
(8)
Using putty knife, peel adhesive backing from surface of sound enclosure rear panel assembly. Apply
additional solvent as needed.
(9)
To replace acoustical foam (18), wipe surface area of sound enclosure rear panel assembly with a clean
cloth dampened in Toluol solvent, and immediately wipe solvent from surface with a clean, dry cloth.
(10)
Fabricate appropriate acoustical foam (18). Refer to Appendix G-2 for replacement.
(11)
Peel off protective backing.
(12)
Place acoustical foam over prepared areas, in correct position, and press firmly in place.
4-25
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