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|  MIL-F-50532A(MI)
4.4 Test methods and procedures.
4.4.1 Solid film lubricant. The component shall be cross sectioned
and the exposed surface polished. The film thickness shall be measured.
The component shall be classed defective if bare spots exist on the
surfaces or if the thickness of film exceeds the specified requirement.
4.4.2 Spring embrittlement. The spring shall be extended in a
manner representative of actual functioning (i.e., bending, twisting,
tension) until the spring no longer returns to its original condition.
The spring shall be classed defective if it breaks prior to this point.
4.4.3 Porosity of mounting base. The mounting base shall be sectioned
through the center of the firing pin hole, parallel to the locking shaft
hole. The firing pin hole shall be examined for porosity and surface
finish. The mounting base shall be classed defective if porosity is in
excess of the specified requirements or if the surface finish exceeds the
specified requirements.
4.4.3.1 Surface finish of graze lever shaft of mounting base.
The mounting base shall be sectioned through the center of the graze
lever shaft and each of the sections shall be examined for surface
finish using the equipment specified in 4.3.4. The mounting base shall
be classed defective if it fails to comply with the specified surface
finish requirement.
4.4.4 Insulation resistance.
The electrical resistance of the cover
assembly shall be measured between the points specified in 3.5.2 using the
test equipment specified in 4.3.4. The cover assembly shall be classed
defective if the resistance measurement is less than the specified
requirement.
*
4.4.5 Fuze safety. The electrical resistance shall be measured as
specified in 3.5.3. A red dot shall be readily visible on the cover
plate to indicate that the fuze has passed the telltale contact-cover
electrical test. The test equipment (see 4.3.4) shall automatically
stamp the proper marking on each fuze, only when each electrical resistance
measurement is within the required limits. The fuze shall be closed
defective and removed from the lot if after having been subjected to the
test the acceptance mark is not present on the fuze. Prior to performance
of the fuze safety test, the unarmed position of the rotor shaft shall
be visually confirmed (see dwg. 9252815).
WARNING: This test may be dangerous and should be performed behind a
suitable barricade.
28
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