100-214-239 Rev. A 7-3
Reconditioning the Stack Interface
Digital Sonifier
7.2.1 Refacing the Mating Surfaces
NOTE
i Never clean the Converter or Horn mating surfaces with a buffing wheel.
1. Disassemble the Converter / Horn Stack and wipe the mating surfaces with a clean
cloth or paper towel.
2. Examine all mating surfaces. If any mating surface shows corrosion or a hard, dark
deposit, recondition it.
3. If necessary, remove the threaded stud from the part.
4. Tape a clean sheet of #400 (or finer) grit emery cloth to a clean, smooth, flat sur-
face (such as a sheet of plate glass).
NOTE
i Be careful to avoid tilting the part and losing flatness of the surface. Doing so
may make the system inoperative, due to improper mating surfaces.
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