MIL-DTL-12713E
Drawing
Final assembly.
number
4.3
13032529
Next higher
assembly
7197156
Conformance
Requirement
Classification
Examination or test
criteria
paragraph
Inspection
method
reference
Critical
None defined
Major
101
Presence of Plate,
100%
3.2
Visual
Identification,
8228871
102
Level vial cover
Level IV
3.2
Tactile
shall be movable by
hand, but not spin
freely
Minor
201
Evidence of poor
Level II
3.12
4.13
workmanship
4.4 Environmental.
4.4.1 Storage temperature. The gunner's quadrant shall be placed in the test
chamber and the temperature of the chamber reduced gradually to -60 ± 5°F and shall
remain at this temperature for a minimum of 4 hours. At the completion of this 4 hour
period, the temperature shall then be gradually raised to +160 ± 5°F and the quadrant shall
remain at this temperature for a minimum of 4 hours. At the completion of this 4 hour
period the temperature of the test chamber shall be gradually reduced to room ambient
temperature (+60°F to +90°F) at which time the quadrant shall be removed from the test
chamber. The quadrant shall then be subjected to a visual and tactile examination to
determine that there is no evidence of distortion, cracks, level vial breakage, or undue
irregularities of moving parts. Then conduct the tests of 4.5-4.13. The same units may be
used for both storage temperature and operating temperature verifications, if desired. (See
6.7 Thermal shock.)
4.4.2 Operating temperature. The quadrant shall be placed in the environmental
chamber and the temperature of the chamber reduced gradually to -50 ± 5°F. The quadrant
shall remain at this temperature for a minimum of 4 hours. At the completion of this 4
hour period, and within 10 minutes of removal from the environmental chamber, the
quadrant shall meet requirements listed in 3.3.2. Upon completion of this portion of the
test, the quadrant shall then be placed back in the environmental chamber and the
7
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