TM 9-2330-271-14&P
compartments: laboratory compartment, which is entered
1-8. Differences in Models
through the rear curbside door; utility compartment,
a. The semitrailer vans covered in this manual
which is entered through the forward curbside door: and
differ in configuration and equipment. Some vans
the rear compartment, which is entered through the rear
incorporate the conventional tandem suspension, while
van door and an inside door located in a partition at the
others are equipped with the air ride suspension. Doors
rear of the laboratory compartment. Purging and air-
differ both in quantity, location and configuration. Some
conditioning ducts are built into the ceiling (fig. 1-36).
semitrailers incorporate a swing-up landing gear instead
of the rigid type.
b. The interior of the XM822 semitrailer
(petroleum testing laboratory) is composed of three
Figure 1-36. Air conditioning and purging ducts, XM822.
c. In addition to the differences noted in the
tabulated data (paragraph 1-10), Table 1-1 lists the
differences among the various models.
1-37
