MIL-PRF-45085D
3.4.3.3 Heat rejection, core arrangement C. When tested as specified in 4.5.4.4.3, heat
rejection, air pressure drop, and oil pressure drop shall conform to performance curves shown on
figures 4, 7, and 8. Heat rejection shall be not more than 10% below capacity curve. Air and oil
pressure drop shall be not more than 10% above capacity curve.
3.4.4 Vibration. When tested as specified in 4.5.4.5, the assembly shall show no evidence
of seepage or leakage.
3.4.5 Corrosion resistance. When tested as specified in 4.5.4.6, the external surfaces of
the assembly unit shall show no evidence of corrosion that would affect performance in any
manner.
3.5 Marking. Each oil cooler assembly and core assembly shall be marked with
permanent and legible characters and shall be made of a material suitable to withstand the
environmental requirements specified herein (see 4.5.2). The assembly shall be marked with the
National Stock Number (NSN) the part or identifying number (PIN) and the manufacturers name
and part number (see 6.2).
3.6 Workmanship. Workmanship shall be such as to preclude evidence of careless
handling, such as scratches and mars on exposed surfaces, blemishes, sharp edges, burrs,
excessive brazing, and the like shall be cause for rejection (see 4.5.2).
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.2).
b. Conformance inspections (see 4.3).
c. Control tests (see 4.4).
4.2 First article inspection. First article inspection shall be performed on preproduction or
initial production samples as specified when a first article sample is required (see 3.1). This
inspection shall include the examinations of 4.3.2 (see table I) and the tests of 4.5.4 through
4.5.4.6 (see table II) in the sequence shown in table III.
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