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Test method for interchangeability |
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|  MIL-T-63535(AR)
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
a motor in the interchangeability test shall cause retest or
rejection of the first article.
At the discretion of the Government representative, an
interchangeability retest may be allowed. Failure during the retest
shall cause rejection of the first article. A sample of six motors
from each retest shall be tested using the same procedures described
above.
4.4.7.2 Repair parts. At least two parts of concurrent repair
parts shall be subjected to the interchangeability test specified in
4.4.7.3. Failure of any part to meet the interchangeability
requirements shall be cause for rejection, subject to reconditioning
and further test. A sample consisting of double the number of parts
used in the original test shall be tested using the test methods
specified above.
4.4.7.3 Test method for interchangeability. Motors shall be
tested by disassembling and then reassembling the parts. Parts
shall be disassembled from the motor 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.
4.4.7.4 Repair parts. Concurrent repair parts shall be tested
by disassembling two motors previously tested in 4.4.7.3 and then
reassembling them using the concurrent repair parts. No hand
refinement of parts will be allowed, and the assembled motors shall
operate and function as intended. This test may be performed
independently of the motor interchangeability testing specified in
4.4.7.1 and at more frequent intervals using accepted motors taken
from current production.
4.4.8 Design and construction. Any motor which fails to comply
with the specified requirements or evidences degradation of its
operational performance shall be classed defective. Test equipment
and procedures shall be satisfactory, to the contracting officer (see
4.5.5),
4.4.8.1 Input characteristics. Verify by measurement that the
motor line voltage is 28 volts direct current.
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