MIL-DTL-9398D
4.5.21 Internal examination. The generator shall be examined internally. Evidence of
excessive wear or other deterioration shall be cause for rejection.
4.5.22 Disassembly-reassembly. The generator shall be disassembled to the extent that all
fastened parts, except press-fit or shrink-fitted parts, are separated. The fastener hardware
guideline of MIL-HDBK-454 may be used as guidance to ensure that the fastening means are
sufficient. The generator shall then be completely reassembled reusing all fasteners of the original
assembly except that new safety wire shall be used and sealing compounds shall not be used. The
generator shall then be operated to determine that it runs properly and that all parts are
satisfactorily mated. The disassembly and reassembly as described above shall be done five times
on each generator and the same requirements shall be met.
4.5.23 Shaft failure. The generator shall be disassembled. The shaft shall then be torqued
until it fails. The torque required for shaft failure shall be measured and shall be 35 inlb to 45 inlb.
4.5.24 Reliability.
4.5.24.1 Reliability test plan and report. Prior to starting the reliability test, the manufacturer
shall submit a detailed reliability test plan for formal approval by the procuring activity. The
manufacturer may refer to the requirements specified in test plan I-D of MIL-HDBK-781 as a guide
for the reliability test plan. The manufacturer shall prepare a final report that summarizes the
achieved reliability of the test samples. The report shall also contain test procedures, details of any
malfunctions, and applicable charts and graphs showing failures/MTBF plotted against test time and
other pertinent test data. The manufacturer may refer to the guidelines outlined in MIL-HDBK-831
for preparing the report.
4.5.24.2 Reliability test. Three generators shall be tested for reliability. Generators
selected for reliability testing shall have previously been subjected to and passed the individual
tests specified in paragraph 4.4.1. The reliability test shall consist of the endurance test of 4.5.17.
For reliability tests, the oil seals shall be supplied with oil.
4.5.25 Maintenance of qualification. At specified intervals determined by the qualifying
activity, the manufacturer must be able to demonstrate that the company still has the capabilities
and facilities necessary to produce the QPL item(s) in accordance with this specification and the
provisions governing qualifications in accordance with SD-6.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in
the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house
contractor personnel, these personnel need to contact the responsible packaging activity to ascertain
packaging requirements. Packaging requirements are maintained by the inventory control point's
packaging activities within the military service or defense agency, or within the military service's
system command. Packaging data retrieval is available from the managing military department's or
defense agency's automated packaging files, CD-ROM products, or by contacting the responsible
packaging activity.
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