Section II. SAFETY

NOMENCLATURE: TRUCK, CARGO, DROPSIDE, 5-TON, 6X6

TM-55-2320-272-14-1
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TM 55-2320-272-14-1 Section Il. 1-6. General 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 are running. (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 operating. (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. SAFETY (2). Smoke in or on the trucks, or within 50 feet of a refueling area. (3). Ride in a truck’s bed area when the truck is being used as a mobile refueler. ***WARNING*** Fire extinguishers must be readily available during all onloading/offloading operations. **WARNING** Proper ventilation must be provided when onloading/offloading with the engine running. Prolonged inhalation of carbon monoxide fumes may prove fatal. *NOTE* Regulations and/or transportation procedures normally associated with vehicles containing diesel fuel will apply. *NOTE* 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- ments. Section Ill. EQUIPMENT DESCRIPTION 1-7. General 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 weather. —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 front bumper. —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 Transportability Drawings Modified data sheets and line drawings are grouped according to the series. Military load classification (MLC) is provided for trucks empty (E) and cross- country/highway (CC/HWY). 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. 1-2

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