MIL-PRF-25478D
4.6 Tests.
4.6.1 Examination of product. The oil cooler shall be examined for compliance with
requirements for materials, weight, identification, compatibility, components, castings,
temperature control and surge protection devices, fittings locking threaded parts, maintainability,
dimensions, workmanship, and presence of foreign materials.
4.6.2 Cleaning. Cleanliness of the oil cooler shall be demonstrated by industrially
accepted test methods which detect the presence of acids, alkaloids, or halides.
4.6.3 Static pressure test. The oil cooler shall be subjected to a hydrostatic pressure, as
specified in the acquisition document (see 6.2), for one minute and checked for leakage or
permanent distortion. There shall be no leakage.
4.6.4 Oil pressure drop with air flow. The oil cooler shall be chilled at the temperature
and for the duration specified in Table II while filled with oil. The rated air flow, at the
temperature of rated air flow as specified in Table II, shall be applied to the oil cooler air inlet
throughout the chilling and testing period. After chilling the oil cooler as specified, the flow of
oil to the oil inlet shall be initiated at one-half of the value of rated oil flow as specified in Table
II. The initial temperature of oil applied to the oil inlet shall be equivalent to chill temperature.
AT the end of three minutes, the rated oil flow shall be established and the oil inlet and oil outlet
temperatures shall be as specified in Table II. The oil pressure drop across the oil cooler shall not
exceed the value specified Table II. When subjected to these conditions, the oil cooler shall meet
the total heat rejection specified in the acquisition document (see 6.2) with rated air flow in
either direction.
8
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business