MIL-T-46765 Trucks, Tank: Sewage And Waste, Dump Type, 4550 And 7570 Liter 1200 And 2000 Gallon, Modified CommercialThis specification covers diesel and gasoline engine driven trucks equipped with a hydraulic lift dump tank, an auxiliary engine driven centrifugal pump, and associated hoses and equipment for loading and unloading the dump tank with sewage and waste materials. The vehicle is capable of cleaning sewers, septic tanks, catch basins, manholes, and sludge pits. The trucks have minimum gross vehicle weights GVW of 11 350 kilograms kg 25,000 pounds in a four wheel, two wheel drive 4x2, 4550 liter L 1200 gallon size; and 15 650 kg 34,500 pounds in a six wheel, four wheel drive 6x4, 7570 L 2000 gallon size; for normal rating conditions. Vehicles procured under this specification are commercial items which are warranted by the manufacturer as specified in acquisition documents.

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MIL-T-46765(AT)

*    3.2.9  Prohibited materials.  Asbestos materials shall not be used in any form in any part of the vehicle.  No item, part of assembly shall contain radioactive materials in which the specific activity is greater than 0.002 microcurie per gram or activity per item equals or exceeds

0.01 microcuries.

3.3  Performance.

3.3.1  Speeds and gradeability.  High and low speed requirements shall be met with truck loaded to specified GVW.

3.3.1.1  High speed gradeability.  The vehicle shall ascend continuous grades specified in table II at 80 kilometers per hour (km/h) (50 miles per hour (mph)).  Gradeability requirements shall be met with the main transmission in direct drive, and when a multi-speed axle is furnished, with the axle in high speed range.  Gradeabilitysha1l be verified with calculations in accordance with SAE J688 (see 6.3).

*       TABLE II.  Gradeability.

3.3.1.2  Low speed.  Low speed for vehicles with a manual transmission shall be calculated with the engine operating at not less than 35 percent of the recommended governed speed, and shall provide not more than the vehicle speed (mph) specified in table III for the corresponding number of available forward speeds.

TABLE III.    Low speed requirement.

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3.3.1.3  Maximum geared speed.  The maximum geared speed at engine governed speed shall be not less than 93 km/h (58 mph).  Conformance to geared speed specified shall be determined by calculating in accordance with the following formula:

Maximum geared speed (km/h)

        Governed speed (rpm) x 1.609         Total gear reduction x tire factor (see 6.3)

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