A-A-52402A
3.2.1 Appearance. Both faces of the splash guar shall be rubber. All edges shall be molded and sealed. The color shall be black.
3.3 Design and construction.
3.3.1 Dimensions. Dimensions of the splash guard shall be as specified in table l.
|
Part or identifying Numbering (PIN) |
Dimensions |
|
|
A |
B |
|
|
A52402-1 |
12 |
18 |
|
A52402-2 |
16 |
38 |
|
A52402-3 |
24 |
36 |
|
A52402-4 |
24 |
40 |
|
A52402-5 |
24 |
48 |
|
A52402-6 |
24 |
30 |
3.3.2 Mounting. The splash guard shall have four elongated or holes as shown in figure 1.
3.4 Performance.
3.4.1 Tensile strength. The tensile strength of the material shall be not less than 1,000 pounds per square inch (psi) when tested in accordance with ASTM D412.
3.4.2 Elongation. The ultimate elongation shall be
not less than 200 percent when tested in accordance with ASTM D412.
3.4.3 Ozone resistance. Rubber specimens shall not show evidence of cracking following exposure for 7 days (168 hours) to an atmosphere with an ozone concentration of 50 parts ozone per 100,000,000 parts air by volume at a temperature of 104 degrees Fahrenheit (°F) when tested in accordance with ASTM D573.
3.4.4 Accelerated aging. After accelerated aging for a period of 16 hours in an air medium at atmospheric pressure and a temperature of 212 ± 2°F, the material shall have a tensile strength and elongation of not less than 70 percent of the unaged values when tested in accordance with ASTM D573.
3.4.5 Low temperature brittleness. Specimens prepared from the basic rubber material shall not become brittle at a temperature of -40°F ± 4°F. Failure shall be defined as the occurrence of cracks, fissures, crazing, or rupture when tested in accordance with ASTM D2137.
3.4.6 Hardness. The durometer hardness number of the material shall be not less than 60 when tested in accordance with ASTM D2240.
3.4.7 Flexibility. The splash guard shall be folded in the middle along its length with a weight of 100 pounds applied to the fold for a period of 5 minutes. The weight shall be placed on a board not less than 12 inches long with the weight resting on the central 12 inches of the fold. Splash guard shall not crack or show any evidence of failure.
3.5 Marking. Guard, splash, wheel supplied to this CID shall be marked with the manufacturer's (MFR's) standard commercial PIN. (NOTE: The part number marked on the unit pack shall be the CID PIN.)
3.6 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs.
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