MIL-DTL-62034G(AT)
4.5.10 Landing gear test. To determine conformance to 3.4.7, the landing gear on the
fully loaded semitrailer shall be fully lowered and fully raised. In addition, the fully loaded
semitrailer shall be coupled and uncoupled while supported on the landing gear. The landing
gear shall meet the specified functional and operational requirements during and following the
tests.
4.5.11 Longitudinal grades and side slope tests. To determine conformance to 3.4.8.1
and 3.4.8.2, the semitrailer towing vehicle combination shall be operated on specified grades and
slopes and observed for meeting specified performance requirements.
4.5.12 Electromagnetic compatibility test. To determine conformance to 3.4.9, the
semitrailer shall be tested as specified in MIL-STD-461.
4.5.13 Waterproofing and sealing. To determine conformance to 3.4.10.1, each
semitrailer van body shall be subjected to a 15 minute spray test to determine waterproofness of
panel joints and door seals. Test shall be conducted prior to installation of insulation, inner
panels, plywood flooring, and sound deadening material. The spray shall be delivered by
nozzles operating at 25 pounds per square inch (lb/in2) [172 kiloPascals (kPa)] water pressure,
sufficient in number and so placed [approximately 2 ft (0.6 m) from body], to directly spray full
area of sides, roof, front, and rear of van body. During test, doors shall be closed as in normal
operation.
4.5.14 Heat leakage test. To determine conformance to 3.4.10.2.1, the semitrailer
equipped with a refrigerating unit shall be placed in a controlled temperature room, where the
temperature difference between inside and outside of semitrailer shall be a minimum of 50 °F
(10 °C) during any test. Eleven thermocouples or thermometers which have been checked
against a secondary, standard thermometer shall be placed outside and located as follows to
record the ambient air temperature: one at each of the eight corners; one in the center of the top;
and one at the center of the bottom. Thermometers shall be not less than 5 inches (in.)
[127 millimeters (mm)] from body of semitrailer. Electric resistors surrounded by shields to
minimize radiation shall be placed within semitrailer. If incandescent elements are used, they
shall be operated at 1/2 normal voltage by connecting two in series. Eleven thermocouples
which have been compared to a secondary, standard thermometer shall be placed inside
semitrailer as follows: one in each of two opposite upper and two opposite lower corners; one in
the center of each side; one in the center of the ceiling; one in the center of the front wall; one in
the center of the door; one in the centerline of the floor 4 ft (1.2 m) from the door; and one on the
center of the floor 3 ft (0.9 m) from the front wall. Each inside thermocouple shall be placed to
measure the air temperature 1 in. (25 mm) from the surface to which it is attached. An 8 or
10 in. (203 or 254 mm) electric fan shall be placed within the semitrailer on the raised portion of
the floor and faced toward the door to provide interior air circulation. The door shall then be
closed and not opened for the duration of the test. Electric current shall then be sent, through the
resistor and the fan to provide 900 to 1000 W within the semitrailer. When the interior
13
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business