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Test procedures of tiedown provisions. |
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|  MIL-R-52499C(ME)
b. Restrain the roller by anchoring the main frame and subject each provision to a force
equal to the load factor specified in MIL-STD-209 times the load it carried in
paragraph (a) above. An alternate method of test is to lift the roller as in (a) above and
add weights to the main frame until the required force is obtained. Hold the roller
under either of the above loading conditions for at least 90 seconds.
4.5.2.4.1 Failure criteria. Weld failure or permanent deformation caused by lifting or failure
to meet the requirements of MIL-STD-209, shall constitute failure of this test.
4.5.2.5 Test procedures of tiedown provisions. With the roller anchored by means other than
the provisions being tested, apply the proportion of the static loads as specified in
MIL-STD-209 to each attachment. Measure dimensions of the tiedown.
4.5.2.5.1 Failure criteria. Failure to meet the requirements of MIL-STD-209 shall constitute
failure of this test.
4.5.2.6 Electromagnetic interference. Unless otherwise specified, the roller shall be tested in
accordance with SAE J551. A report tabulating the allowable maximum interference and the
measured interference shall be furnished with the preproduction model test report.
4.5.2.6.1 Failure criteria. Failure to meet the requirements of SAE J551, shall constitute
failure of this test.
4.5.2.7 Sound level test. Unless otherwise specified, the sound level tests shall be conducted
(see 6.2 and 6.7). Frequency measurements, db(A) levels, tape recording, instrument
identification, environmental information, and main sound source identification, shall be
reported.
4.5.2.7.1 Failure criteria. One or more functional defects shall constitute failure, and
acceptance of the equipment shall not be approved until all defects are corrected.
4.5.2.8 Quality conformance operational run-in. Each roller shall be serviced as required
and shall be run-in in accordance with the manufacturer's normal procedures for a period of not
less than 60 minutes.
4.5.2.8.1 Failure criteria. One or more functional defects shall constitute failure, and
acceptance of the equipment shall not be approved until all defects are corrected.
4.6 Inspection comparison. The Government may select rollers at any time during the
contract production period and subject these rollers to the examination specified in 4.5.1 and the
tests specified in 4.5.2 to determine conformance to the requirements of this specification. The
inspection will be performed by the Government, at a site selected by the Government, on units
selected at random from those which have been accepted by the Government, and will not
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