MIL-DTL-46714 Semitrailer Van: Electronic, Tactical, 6-Ton, 2-Wheel, M373A2This specification covers the M373A2 van semitrailer, which is a 6-ton, tactical, 2-wheel, van-type semitrailer having an interior length of 30 feet \(ft\). The semitrailer is primarily used to transport and house electronic processing equipment over all types of roads and limited cross-country terrain and under extreme climatic conditions. These mobile shelters are also used as maintenance shops and command posts \(see 6.1\).

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MIL-DTL-46714E(AT)

equipment area of the van shall include no water on the threshold (when van doors are closed), no

water on the inboard side of the door gaskets and no water in the van door lock wells

(see 4.5.4.2).

3.4.3 Turning ability. The semitrailer shall be capable of making complete 90� turns, right

and left, relative to the towing vehicle without interference between the towing vehicle and the

semitrailer (see 4.5.4.3).

3.4.4 Landing gear. The landing gear shall support the fully loaded semitrailer without

deformation and shall withstand, without damage, strains imposed upon it due to coupling,

lowering, or raising the fully loaded semitrailer. The landing gear assembly shall function properly

during extending and retracting operations (see 4.5.4.4).

3.4.5 Braking.

3.4.5.1 Service brakes. The service brakes of the combination semitrailer and towing

vehicle shall control, decelerate, and stop the semitrailer within 35 ft from a speed of 20 miles per

hour (mph) on a dry, hard, paved, level, smooth surface. Application of brakes on all wheels of

the semitrailer and towing vehicle shall be concurrent (see 4.5.4.5.1).

3.4.5.2 Automatic brake actuator. The semitrailer shall be equipped with an automatic

actuating device to apply the semitrailer brakes upon breakaway from the towing vehicle. The

actuator shall maintain application of the brakes and hold the semitrailer stationary on a 20%

grade for not less than 15 minutes (see 4.5.4.5.2).

3.4.6 Grade and slope operation. The towed semitrailer shall be capable of transporting

the rated payload without slipping or upsetting when ascending or descending longitudinal grades

of up to 20% and when crossing side slopes of up to 20% at speeds between 3 and 5 mph

(see 4.5.4.6).

3.4.7 Environmental. The semitrailer when properly lobed and serviced shall be

operational in all types of weather conditions, in ambient temperatures ranging from -50 degrees

Fahrenheit (�F) to +120�F, and in ambient relative humidities of 1 to 100% without deterioration

of componentry or performance. Unless otherwise specified (see 6.2), the semitrailer shall be

lubricated for -10�F to +125�F ambient air temperature (see 4.5.5).