=Gasoline Tank.=—Terneplate tanks. Two independent duplicate tanks each of 12 gallon capacity. Auxiliary terneplate tank under armor, 10-gallon capacity. =Main Frame.=—Cast in one piece-open hearth steel. =Roller Frames.=—Four frames steel channel, joined by oscillating shaft. Two frames right and left front. Two frames right and left rear. =Truck Rollers.=—Six on each side of tractor, fitted with roller bearings, turned on steel gudgeons, flanked to follow track rail. =Track.=—Made up of malleable iron track shoes with track links. Integral, fitted with space blocks, and 1.25” pins. =Track Drive Sprockets.=—Two. Teeth mesh with opening in tracks. =Blank Sprockets.=—Two. Fitted with roller bearings which turn on steel gudgeons. Used to adjust track tension. =Track Supporting Rollers.=—Four on each side of tractor, two mounted on brackets attached to front roller frame channel, and two in the rear mounted on spring bracket which is bolted to main frame. =Springs.=—Four double coil springs at rear, two on each side between rear roller frame and bracket on main frame and four—two on each side of equalizing bar at front. =Equalizing Bar.=—Spring supported on front roller frame sections. AMMUNITION TRUCK. The ammunition truck supplied to regiments of 155-mm howitzers, model of 1918, motorized, consists of two units: Ammunition truck body, model of 1918; 2-ton truck chassis, Nash model 4017-A and 4017-L. Further information concerning those units will be found in the Ordnance Handbooks. “Ammunition truck body, model of 1918” (No. 2002); “2-ton truck chassis, Nash model 4017-A and 4017-L.” Weights and Dimensions. Weight of body 1,200 pounds. Overall length of body 120 inches. Overall width of body 56 inches. Overall height of body 54 inches. Width of floor (inside) 43 inches. Length of floor (inside) 114 inches. Height of sides (inside) 36 inches. Brief Description of Ammunition Truck Body. The ammunition truck body, model of 1918, consists of a box-type steel body opening only at its rear end. The body is designed to accommodate original packing cases of any type of ammunition. When this vehicle is used near the front lines all four sides and its floor are lined with detachable heavy cocoa matting to prevent undue noise. A tarpaulin cover attaches to the body, and so protects its contents. [Illustration: AMMUNITION TRUCK.] In addition to the designation of “ammunition truck,” as explained the ammunition body with various loads is designated when mounted on chassis models as follows: “Wireless,” “Telephone,” “Tanks,” “Personnel,” “Baggage,” and “Ration.” The chassis and bodies for the above are identical for all purposes. The differences in chassis and body equipment and the load carried when the truck is used for different purposes are noted under tables of equipment on page 161. All of the above bodies are mounted on a 2-ton Nash truck chassis.