Safety requirements for individual transport modes
are in the corresponding chapters and appear as
warnings, cautions, and notes. General safety
considerations and precautions for all transport
modes including self-delivery are as follows:
a. The drivers must:
( 1). Be qualified to operate the trucks.
(2). Ensure all loose items have been secured
before operating the trucks.
(3). Remain with the trucks while the engines
(4). Bring the trucks to a complete stop before
the trucks enter or leave a building.
(5). Not operate the trucks in an enclosed
area unless proper ventilation for engine combus-
tion and removal of exhaust gases is available and
(6). Have a ground guide when operating the
trucks in reverse or within 20 feet of another
vehicle or a building.
b. Personnel must not:
( 1). Mount or dismount moving trucks.
(2). Smoke in or on the trucks, or within 50
feet of a refueling area.
(3). Ride in a trucks bed area when the
truck is being used as a mobile refueler.
Fire extinguishers must be readily available
during all onloading/offloading operations.
Proper ventilation must be provided when
onloading/offloading with the engine running.
Prolonged inhalation of carbon monoxide fumes
may prove fatal.
Regulations and/or transportation procedures
normally associated with vehicles containing
diesel fuel will apply.
Unless the trucks are shipped with ammuni-
tion, they will not present any special hazard-
ous or dangerous characteristics during their
exposure to normal transportation environ-
Section Ill. EQUIPMENT DESCRIPTION
The M939-, M939A1-, and M939A2-series, 5-ton,
6x6 trucks have various wheelbase and body styles.
The trucks are designed for use on roads, highways,
and cross-country terrain and in all types of
The M939-series trucks have tandem axles with
dual tires. The M939A1 and M939A2-series
trucks have tandem axles with single radial tires.
The M939A2-series trucks also have a central
tire inflation system (CTIS). Each truck series is
easily identified by the tires and CTIS.
The M939- and M939A1-series trucks have four
tiedown provisions. Two on the front bumper and
two on the rear bumper. The M939A2-series
truck has these same provisions plus two addi-
tional tiedown provisions on the bottom of the
The weight and overall dimensions of the trucks
differ, depending on the model number and
series. Information specific to the transportabil-
ity of each truck is the following section.
1-8. Technical Data and
Modified data sheets and line drawings are grouped
according to the series. Military load classification
(MLC) is provided for trucks empty (E) and cross-
1-9. Reduced Configuration
Removable items such as bows, tarpaulin, and
exhaust pipe extensions can be stowed within the
truck cargo or crew compartments. Windshields can
be folded down and the mirrors folded in. The spare
tire may be removed and placed in the cargo
compartment when the windshield is folded down.