MIL-DTL-62027K
3.4.3 Turning ability. The dolly set shall follow to the right and to the left, without
damage to the dolly set or the towing vehicle and without interference between dolly set and the
towing vehicle (see 4.6.5.5).
3.4.4 Brake system. When tested in accordance with 4.6.5.6, hydraulic fluid leakage shall
not be evident, and the rate of drop in air pressure shall be not more than 34 kilopascals (kPa) per
minute with the brakes fully applied or fully released.
3.4.4.1 Service brakes. The service brakes of the dolly set and towing vehicle
combination shall decelerate and stop the vehicle combination within a braking distance of
9 meters (see 4.6.5.6.1).
3.4.4.2 Parking brake. The parking (hand) brake shall hold the dolly set with rated
payload on a dry, hard-surfaced 15% grade (see 4.6.5.6.2).
3.4.4.3 Automatic actuation. The automatic actuation device of the dolly set shall apply
and maintain the application of service brakes upon breakaway from towing vehicle. Upon
breakaway, service brakes shall hold the dolly set stationary on grades up to and including 20%
for a period of not less than 15 minutes (see 4.6.5.6.3).
3.4.5 Towing. The dolly set shall not shift or swerve from side to side more than 8 cm to
each side of the path of the towing vehicle (see 4.6.5.7).
3.4.6 Fording. With rated payload, the dolly set shall ford hard-bottomed salt or fresh
water crossings deep enough to completely submerge its wheels. The dolly set shall withstand
submergence for not less than 15 minutes without being damaged and without special preparation
or servicing before or after fording operations (see 4.6.5.8).
3.4.7 Lifting devices. Mechanical or hydraulic system lifting devices shall have
independent action for purposes of attaching the dolly set to the shelter on even, or uneven,
ground. The system shall level the shelter on uneven ground. The mechanical or hydraulic system
lifting devices shall vary the shelter ground clearance down to 0 cm for loading into cargo aircraft.
The lifting devices shall relieve weight from the wheels while the dolly set is attached to the
shelter. The mechanical or hydraulic system shall position the shelter to a level position when one
wheel is 4 cm lower than the opposite wheel on the same axle (see 4.6.2 and 4.6.5.9).
3.4.8 Attachment. The dolly set shall be attachable to the shelters within 30 minutes
without use of special tools or equipment. The dolly set shall be such that it can be attached to
the shelter when on level or rough terrain. The dolly set shall support the loaded shelter
indefinitely in an elevated position (see 4.6.2 and 4.6.5.9).
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