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|  MIL-M-63988 (AR)
4.5 Quality conformance inspection.
4.5.1 Sampling. Each mount shall be inspected for compliance
to this specification except sampling for proof firing as
specified in 4.7.3 shall be the first three production mounts, and
one from each two month's production or one from each twenty-five
produced. In addition, the first three production mounts shall be
climatically fired as specified in 3.4.4. Failure to comply with
the specified requirements shall be cause for rejection.
4.5.2 Examination.
4.5.2.1 Materials. Materials used in the manufacture of
mounts shall be examined and tested in accordance with the
material specifications referenced on the applicable drawings.
The contractor's inspection records shall be checked to determine
conformance to 3.2.
4.5.2.2 Hydraulic system. To determine compliance with
3.3.1, a minimum of one pint of oil shall be removed from each
recoil cylinder of each mount. The sample shall be taken within
five minutes after gymnastication. Evidence of particles
exceeding 3.3.1 shall be cause for rejection. Additionally,
failure to comply with the hydraulic leakage requirements of 3.3.1
and 3.4.5 shall be cause for rejection.
4.5.2.3 Surface cleanliness. Each mount shall be examined to
determine compliance with the cleanliness requirements specified
in 3.3.2. Failure to comply with 3.3.2 shall be cause for
rejection of the mount.
4.5.2.4 Part modification. Each mount shall be examined to
determine compliance with requirements specified in 3.3.3. Any
evidence of parts being altered or hand-fitted during assembly
beyond the provisions of 3.3.3, shall be cause for rejection of
the mount.
4.5.2.5
Gas and accumulation system. To determine
conformance
to 3.3.4, the system shall be examined for
cleanliness,
air and moisture. Failure to comply with 3.3.4 shall
be cause for
rejection of the mount.
4.5.2.6 Cylinder pressure. To determine compliance with
3.3.5, the cylinders of each mount shall be pressurized in
accordance with drawing requirements and inspected for damage,
permanent deformation or leakage. Pressures shall be measured
with Government-approved gages. Failure to comply with 3.3.5
shall be cause for rejection of the mount.
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