MIL-T-46797 Truck, With High Lift Dump Mechanism: Dump, Cargo And Stake Body Types, Diesel And Gasoline Engine Driven, 24,000 Gvw, 4X2, CommercialThis specification covers diesel and gasoline engine driven, four-wheel, two-rear-wheel drive, commercial trucks with a high lift dump mechanism. The truck has a minimum gross vehicle weight GVW of 24,000 pounds for normal operating conditions. Vehicles procured under this specification are commercial items which shall be warranted by the manufacturer as specified in procurement documents.

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MIL-T-46797B(AT)

distance traveled shall consist of highway, rough dirt roads, partly surfaced gravel roads, puddles, and sharp turns. For each 10 miles of travel at least one sudden stop shall be accomplished. Upon completion of the road test all equipment shall be thoroughly examined. The equipment shall show no evidence of damage; all body and cab doors shall properly open and shut; there shall be no evidence of mud or dust inside vehicles; and there shall be no evidence of racking of the body.

4.4.3 Operational testing.

* 4.4.3.1 Upsetting and range of movement. With the vehicle resting on approximately level ground and not fastened to any artificial base, the body shall be loaded with twice the payload capacity (GVW minus curb weight). The body shall be extended to its full height and dump positions, lowered to travel position and raised to increments of one third, two thirds, and to its full height and dump position and lowered to travel position.

4.4.3.2 Wind load test. Wind resistance shall be demonstrated with and without the payload. With the payload evenly distributed over the body load space, and the body elevated to its maximum specified height, measured from the ground, and the vehicle positioned whereby

the greatest area is parallel to, the centerline of the vehicle, the specified wind load, generated by artificial means or by an, equivalent simulated wind, shall be applied to the vehicle from the

sides (see 3.3.3.7). The contractor shall furnish to the engineering office of the procuring activity, calculations or a certified test report.

* 4.4.3.3 Elevating and dumping body speed test. With the vehicle resting on approximately level ground and the payload uniformly distributed over the body load space, the body shall be elevated to its maximum specified height and held for 2 minutes, plus or minus

1/2 minute, placed in dump position and then lowered to rest position forty cycles, with a

30 minute interval between each 10 cycles. Each cycle equals one complete elevation, dumping

and retraction of the body. The test shall verify the requirements of' 3.3.3.4. The test shall be performed in an ambient temperature of 75°F plus or minus 10°F.

4.4.3.4 Creep test. With the vehicle resting on approximately level ground, and an evenly distributed payload placed on the body, the body shall be extended to its full height and held for not less than two hours. Vertical settling shall be not more than 1/8 inch in two hours (see 3.3.3.5).