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)

*          4.4.3.5  Dynamic conditions.  With one and one-half times the payload on the body and with the body fully extended and operating through various positions, as deemed necessary by Government inspector, and with the body being raised, lowered and dumped for at least 1/2 hour, the water soluble penetrant and magnafluxed areas shall be inspected for any evidence of cracks. Any evidence of cracks or deformation shall be cause for rejection of the vehicle.

*          4.4.3.6  Static conditions.  With the body in its most vertically extended position and with three times the payload placed on the body, water soluble penetrant and magnafluxed areas shall be inspected for evidence of cracks.  Evidence of cracks or deformation shall be cause for rejection of the vehicle.  At the manufacturer's option, dye penetrant and magnaflux inspection may be conducted prior to the first production vehicle inspection, provided the tests specified in

4.4.3.5 and 4.4.3.6 are conducted prior to the inspection; and records of the tests and the dye

penetrant and magnaflux inspection witnessed by the Government are presented at the time of the first production vehicle inspection.

*        4.4.3.6.1  Critical areas.  At least the following critical areas shall be inspected by dye penetrant or magnaflux:

(a)   Sub-frame, trunnion, yoke, body cylinder guides, and attaching areas

(b)   Struts, hoisting mechanism

(c)   Structural steel of body and sub-frame

(d)   Tailgate support areas, type I

(e)   Platform support areas, types II and III.

*        4.4.3.7  Hoist stability.  The hoist shall provide sufficient structural strength to preclude shifting laterally or fore and aft, without evidence of undue lateral flexing of the structure and without evidence of wear due to binding of the hoist members.

*          4.4.3.8  Controls.  Controls shall be operated and shall meet or exceed the requirements specified herein.

*          4.4.3.9  Hydraulic system verification.  The hydraulic system shall be verified to assure that all contractual requirements are met.

*          4.4.3.10  Body electrical system.  The body electrical system shall be verified to assure that the system has sufficient capacity to meet the requirements specified herein.

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