A-A-52470 Filter, Fluid, Pressure And Filter Element, Fluid, Pressure-Automotive Fuel (45 Gph Filtration)This CID covers requirements for a filter assembly with a coarse filtration element and the replacement element for use in the fuel system of internal combustion engines and accessories.

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A-A-52470A

2.1.3 Filter element. The filter element shall be made of a material which shall allow the filter assembly to perform to the requirements of this CID.

2.1.4 Filter bowl and filter element gaskets. The materials for the filter bowl and filter element gaskets (see figures 1 to 3), old MS 51091-1 to -3, are superseded by the new PINs A52468-1 to -3 and shall be in accordance with A-A-52468.

2.1.5 Filter head center bolt gasket. The filter head center bolt gasket, PIN 52470-3 (see figures 1 and 3) shall be made of soft annealed copper, cold rolled, sheet or strip, Rockwell B-55 maximum per ASTM B152/B152M.

2.2 Design and construction.

2.2.1 Envelope. Unless otherwise specified in figures 1 and 2, the filter assembly and the replacement element shall be constructed in accordance with the manufacturer’s specifications/ drawings. The filter assembly shall be compatible with the center bolt and with the called-out gaskets.

2.2.2 Gaskets. The design and construction of the gaskets shall be to the form, fit, and dimensions as shown in figures 1 and 3.

2.2.3 Servicing. Servicing, including cleaning and reassembly shall be easily accomplished without disturbing the filter assembly’s connection to the engine and shall be designed to prevent improper assembly.

2.3 Performance.

2.3.1 Pressure-temperature resistance. The filter assembly shall show no signs of leakage or permanent deformation after being pressure tested at minus (-) 65±3 degrees Fahrenheit (°F), 80±3 °F, and 160±3 °F. The pressure used in this test shall be 40 pounds per square inch (psi). Test fluids shall be used for all tests. For all tests, the pressure shall be applied for 5 minutes and reduced to zero.

2.3.2 Flow rate. The flow rate of the filter assembly or the replacement element shall be 45 gallons per hour (gph). The maximum differential pressure across the filter assembly or replacement element shall not exceed 8 psi at end completion the filtering efficiency test (see 2.3.3).

2.3.3 Filtering efficiency. The filtering efficiency shall conform to the requirements specified in table I. Filters shall be tested with coarse contaminants in accordance with table II. Test fluids shall have a solid contaminant content of no more than 5 milligrams per liter (mg/l) and temperature of 90±10 °F.