min at 2000 psig. The hydraulic power unit will be referred to by the term, "power unit".

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MIL-PRF-62495B(AT)

3. REQUIREMENTS

3.1 First article. When specified (see 6.2), a sample shall be subjected to first article

inspection in accordance with 4.2.

3.2 Materials. Materials shall be in accordance with the manufacturer's materials

specifications for hydraulic power unit and shall be capable of meeting all of the performance

requirements specified herein. Materials shall be free of defects which adversely affect

performance or serviceability of the finished product. Asbestos, cadmium, magnesium and

radioactive material shall not be used in this item. Radioactive materials are defined by CFR,

Title 10, Part 40, and other radioactive material in which the radioactivity is greater than

0.002 microcuries per gram or 0.01 microcuries total activity for the item (see 4.6.1).

3.2.1 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each

other unless protected against galvanic corrosion by using the manufacturer's standard process

(see 4.6.1 and 4.6.2).

3.3 Design and construction. The power unit shall be configured in accordance with the

tolerances of the size limits (FORM), interfaces and connections (FIT), shown on Army reference

Drawing 12298252 and function in accordance with all of the performance requirements specified

herein.

3.3.1 Interchangeability. All subassemblies and components having the same part

number shall be functionally and dimensionally interchangeable (see 4.6.2).

3.3.2 Metals. All metals shall be compatible with the temperature and with the

functional, service and storage conditions to which the components shall be exposed. The metals

shall be suitably protected (see 4.6.1).

3.3.3 Hydraulic fluid. The power unit shall be compatible with fluids conforming to

MIL-H-6083, MIL-H-5606, MIL-H-46170 and MIL-H-83282 (see 4.6.2).

3.3.4 Insulation. Electrical components shall be insulated from case structure. The

power unit shall not be grounded internally (see 4.6.2).

3.3.5 High pressure filter. The pump discharge line shall include a 10 micron or finer

filter (see 4.6.2).

3.3.6 Electric power. The pump and solenoid valve shall operate on 18 to 30 volt direct

current (Vdc) with a current draw of no more than 140 amperes (A) to develop a pressure of

2000 psig. Electrical connections shall be as shown on Drawing 12298252 (see 4.6.1 and 4.6.2).