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|  MIL-T-45380E(AT)
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3.1.1.5 Towing devices. Towing devices consisting of two hooks, loops, eyes or pins or
the chassis manufacturer's standard single center mounted eye or pin shall be mounted on the
front of the vehicle. When specified (see 6.2), in addition, towing devices shall be mounted on
the rear of the vehicle. All towing devices shall be frame rail mounted or reinforced back
to each frame rail.
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3.1.1.6 Trailer towing package. When specified (see 6.2), a trailer towing package shall
be furnished. The trailer towing package shall consist of a pintle, safety chain attachment
devices, a lighting receptacle and associated reinforcements and wiring, and shall be installed on
the rear of the vehicle. The pintle shall be of the rotating type conforming to MS51335-1. The
pintle shall be installed on the chassis frame with reinforcements to transfer a vertical tongue
load of not less than 1,800 pounds and a horizontal drawbar load of not less than 16,000 pounds
directly to the chassis rails. The rearmost portion of the pintle shall be forward, but no more than
four inches forward, of the rearmost part of the vehicle. Two trailer safety chain attachment
devices, one adjacent to each side of the pintle shall be provided. Each attachment device shall
provide an ultimate strength at least equal to the GVW of the truck furnished. The attachment
devices shall be capable of accommodating a standard grab hook (2-3/16 inches wide, 47/64 inch
thick and 31/64-inch throat width) for a 3/6-inch chain. The lighting receptacle conforming to
SAE J560 with its conductors connected and color-coded as specified herein, or number coded,
shall be mounted in a readily accessible location near the pintle.
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3.1.1.6.1 Pintle height. When specified (see 6.2), the pintle height, measured to the
centerline of the pintle, shall be 20 inches (plus 5 minus 0). The pintle shall be installed with
bracket reinforcements to transfer pintle loads directly to the chassis rails. The installation shall
be capable of withstanding a towed load equal to the GVW of the truck without permanent
deformation.
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3.1.1.7 Wheels splash and stone throw protection. The vehicle shall have rigid splash
shields ahead of the rear wheels and rubber mud flaps to the rear of the rear wheels. All tilt cabs
shall have rubber mud flaps to the rear of the front wheels. A metal strip not less than 0.125 inch
thick and not less than 1 inch wide, extending the entire width of the mud flap shall be installed
to prevent the bolt heads or bolt nuts from damaging the mud flap. As an alternate method of
attaching the mud flaps, tabs or clips with minimum surface contact dimensions of 1 inch high
by 1.250 inch wide by 0.094 inch thick shall be furnished at each bolt. All splash shield and mud
flap installations, front and rear, shall conform to the rear wheel splash and stone throw
protection provisions of SAE J682.
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3.1.1.8 Trailer lighting cable. When specified (see 6.2), a trailer lighting cable
conforming to SAE J1067 shall be furnished. The cable shall be coiled and shall be not less than
110 inches long when fully extended. Both ends of the cable shall be equipped with a round
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