2-29. OPERATION OF EXPANSIBLE VAN TRUCKS
a. General. Expansible van trucks have van bodies which are 98 inches (249 centi-
meters) wide when the truck is being moved, 167 inches (424.2 centimeters) wide when
the vehicle is in place and the van body is fully expanded. M820 models have windows,
heating and air-conditioning systems, and use outside electric power. M820A1 models
lack windows and air-conditioning system.
Table 2-4. Differences in Models
Table 2-5. Air Conditioners
b. Selecting Operating Site. Whenever possible, position van on level, firm ground.
Always chock truck wheels if operating site is on a grade, no
matter how slight. Fill low spots under wheels with sand or similar
materials, if needed, to get a nearly level floor line. Failure to do
this can result in injury, death, or damage to vehicle.
Pick the site with care so that van will be as level as possible. Jacks
provided are not used to raise van off wheels. Jacks are only used
for leveling, with most of the weight on wheels.