MIL-DTL-62034G(AT)
3.4.3.1 Service brakes. The service brakes of the semitrailer (loaded with rated payload)
and proper towing vehicle combination shall control, decelerate and stop the vehicle combination
within 30 feet (ft) [9.1 meters (m)] from a speed of 20 mph (32 km/h) on a dry, hard, level,
smooth surface. Application of brakes on all wheels of the semitrailer shall be concurrent. The
semitrailer brake system shall meet the applicable requirements of 49CFR571.121 in effect on
the date the semitrailer is manufactured (see 4.5.2 and 4.5.5).
3.4.3.2 Automatic actuation. The semitrailer shall be equipped with an automatic
actuating device to apply the semitrailer brakes upon breakaway from the towing vehicle. When
loaded to rated payload, device shall maintain application of the brakes and hold the semitrailer
stationary on a 20 percent (%) grade for not less than 15 minutes (see 4.5.2 and 4.5.6).
3.4.4 Fording ability. The semitrailer shall ford hard-bottomed salt or fresh water
crossings to a depth sufficient to completely submerge the chassis without damage to semitrailer
or components and without impairment of the braking mechanism or entrance of water into
wheel bearings (see 4.5.7).
3.4.5 Tracking ability. The semitrailer, with rated payload, shall conform to
requirements of 49CFR393.70 (see 4.5.8).
3.4.6 Turning ability. The semitrailer, when coupled to the proper towing vehicle, shall
make complete turns to the right or left with the semitrailer assuming a 90 degree angle with the
towing vehicle, without cramping, side-slipping, or damage to either the towing vehicle or the
semitrailer (see 4.5.9).
3.4.7 Landing gear. Landing gear shall support the fully loaded semitrailer, and shall
withstand, without damage, the strains imposed upon it, when coupling or uncoupling the towing
vehicle, and raising or lowering the fully loaded semitrailer (see 4.5.2 and 4.5.10).
3.4.8 Gradeability.
3.4.8.1 Longitudinal grades. The semitrailer, loaded with rated payload, at rated
cross-country speed specified herein, and ascending or descending longitudinal grades of 40%,
shall follow the towing vehicle without sliding or shifting to an extent that could cause loss of
control of the vehicle combination (see 4.5.11).
3.4.8.2 Side slopes. The semitrailer shall follow the towing vehicle without slipping or
upsetting when operating, either left or right, on side slopes having a 20% grade (see 4.5.11).
3.4.9 Electromagnetic interference. The semitrailer shall conform to the applicable
electromagnetic interference requirements of MIL-STD-461 for ground equipment (see 4.5.12).
7
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business