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|  MIL-T-62276C
3.1.1.6 Trailer towing package. A trailer towing package consisting of a pintle, safety chain
attachment devices, a lighting receptacle, a trailer brake control system, and associated
reinforcements and wiring shall be installed on the rear of the vehicle. The pintle shall be of the
rotating type conforming to MS51118. The pintle shall be installed on the chassis frame with
reinforcements to transfer a vertical tongue load of not less than 4,000 pounds and a horizontal
drawbar load of not less than 40,000 pounds directly to the chassis frame rails. The rearmost
portion of the pintle shall be forward but not more than 4 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 of not less than
40,000 pounds. The attachment devices shall be capable of accommodating a standard grab hook
(4-9/16 inches wide, 1-3/16 inches thick, 25/32-inch throat width) for a 5/8-inch chain. The
lighting receptacle, conforming to SAE J560 with its conductors connected and color-coded as
specified therein, shall be mounted in a readily accessible location near the pintle. The trailer
brake control system shall conform to 3.4.11.3.
3.1.1.7 Spark arrester. As specified herein (see 3.4.4), the vehicle shall be furnished with an
exhaust system spark arrester.
* 3.1.1.8 Brake lights. At least one pair of brake lights shall override the four-way emergency
flasher or the two systems shall be independent of each other. Modifications to the
manufacturer's standard product to accommodate this requirement shall not compromise
conformance to any Federal Motor Carrier Safety Standard. If additional lights are added to the
vehicle, the lights shall be selected from the chassis manufacturer's standard matching hardware.
3.2 General design.
3.2.1 Federal Motor Vehicle Safety Standards. The vehicle and furnished accessories shall
comply with all Federal Motor Vehicle Safety Standards in effect on the date of manufacture.
3.2.2 Air pollution control. The vehicle shall comply with the EPA Regulations governing
Control of Air Pollution from New Motor Vehicles and New Motor Vehicle Engines in effect on
the date of manufacture. In addition, vehicles destined for California shall comply with State of
California regulations governing air pollution control in effect on the date of manufacture.
* 3.2.3 Sound level. The interior sound level shall not exceed 84 db(A), when measured in
accordance with Federal Motor Carrier Safety Regulation 393.94. The vehicle exterior sound
level shall conform to the EPA Noise Emission Standards for Transportation Equipment, Medium
and Heavy Trucks.
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