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Test method for interchangeability |
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|  MIL-T-63531(AR)
4.6 interchangeability testing (first article inspection
only).
4.6.1 Universal Boresight Kit (UBK). A sample of 2 UBK's,
randomly selected, shall be tested for interchangeability using
the test method specified in 4.6.3. UBK's taken for interchange-
ability testing shall have been found satisfactory in all other
examinations and tests. The 2 UBK's shall comply with the
applicable specification functioning test of 4.5.1, before and
after the interchange of parts. It shall be the responsibility of
the agency responsible for the test to inform the contracting
officer by letter or other methods satisfactory to the contracting
officer, when selective assembly has become necessary. Statement
shall contain as a minimum, the contractor's name and FSCM,
contract number, parts involved in the selective fit, conditions
of parts and rationale for action taken. No hand refinement of
parts shall be permissible without approval by the contracting
officer. No malfunctions shall be allowed in the functioning
tests. Failure of drive assembly in the interchangeability test
shall cause retest or rejection of the represented lot. At the
discretion of the Government representative, an interchangeability
retest may be allowed without reconditioning the lot. Failure
during the retest shall cause rejection of the represented lot
subject to reconditioning and further test as a reconditioned
lot. A sample of 4 UBK'S from each retest or reconditioned lot
shall be tested using the same procedure described below.
4.6.2 Repair parts. At least 2 parts from each inspection
lot of concurrent repair parts shall be subjected to the inter-
changeability test specified in 4.6.3. Failure of any part to
meet the interchangeability requirements shall be cause for
rejection of the represented lot, subject to reconditioning and
further test as a reconditioned lot. A sample consisting of
double the number of parts used in the original test shall be
tested from each reconditioned lot using the test methods
specified above.
4.6.3 Test method for interchangeability. UBK's shall be
tested by disassembling and then reassembling the parts specified
below. Parts shall be disassembled from the UBK'S and identical
parts placed together and mixed. Any commercial part (screws,
pins, etc) rendered unserviceable by-disassembly shall be replaced
without penalty to the interchangeability test.
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