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MIL-T-46797B(AT)
equipped with a removable crank handle. The vehicle shall be adequately reinforced at areas of
jack installation to preclude damage to body and chassis assembly. The stabilizing jacks shall be
of sufficient capacity to withstand the loads imposed during all operations of lifting and dumping
without permanent deformation.
3.5 Body types.
*
3.5.1 Coal dump body (type I). The vehicle shall be equipped with a hydraulically
operated coal dump body. The body shall have a total water level capacity of not less than
7 cubic yards (minus 5 percent). The body shall have two compartments and shall be equipped
with a mechanically operated compartment divider. The vehicle shall have a cab-to-axle
dimension of not less than 84 inches. Inside length shall be not less than 103 inches and inside
width shall be not less than 84 inches. A rear bumper is not required.
3.5.1.1 Body construction. Body floor, sides, compartment divider, and front head shall
be of not less than 8 gage (0.1644 inch) steel. The front head shall be capable of withstanding a
horizontal static load equal to 1/2 the payload capacity of the vehicle without permanent
distortion. When the body floor is constructed in two or more pieces, an automatic seam weld,
having full penetration is acceptable without reinforcement. When seam is hand welded,
underside of joint shall be reinforced with 3-inch wide, 8 gage (0.1644 inch) butt plates, welded
between crossmembers. Full-length, channel formed, rub rail of minimum width to cover rear
dual tire treads shall be provided. Not less than three triangular or box section side braces per
side, of not less than 10 gage (0.1345 inch) steel, shall be equally spaced, between body front
head and full box-type rear corner posts, and welded to side plates. Front head sheet shall be
formed or reinforced for rigidity. Front head and tailgate shall be not less than 6 inches higher
than the sides. Sides shall have pockets provided at each end for insertion of side boards. The
interior of body shell and side reinforcements shall be welded with continuous welds. The rub
rail shall be attached using continuous welds, or with intermittent welds for not less than
50 percent of the edge length of contact edges. The body shall have sloping running boards and
sloping horizontal tailgate braces to minimize the buildup of dirt.
3.5.1.2 Tailgate. The tailgate panel shall be not less than 8 gage (0.1644 inch) steel.
The tailgate shall be double acting, opening from top and bottom. The tailgate shall have heavy
duty hardware, heavy duty support chains, and heavy duty tailgate latch operable by a control at
the left front corner of the vehicle body. The tailgate shall be reinforced to prevent deformation
under load. The tailgate shall be equipped with the manufacturer's standard built-in coal chute
with a manually operated sliding door and a coal deflector. The coal chute shall not interfere
with the normal use of the tailgate.
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