It has no special cooling system or device, the barrel merely being exposed to the air and the hand of the firer being protected on the under side of the barrel by a large wooden forearm. Since the barrel soon becomes very hot, care must be taken to avoid touching it during firing or for five or ten minutes thereafter. CHAPTER XVII. MOTORS. RECONNAISSANCE CAR. The reconnaissance car as supplied to regiments of 155-mm howitzers, motorized, consists of two units: Reconnaissance body, model 1918; 1-ton truck chassis, White, T E B-0. Further information concerning these units will be found in Ordnance Handbooks “Reconnaissance Body, Model 1918;” “1-Ton Truck Chassis White, T E B-0” (No. 1972). Weights and Dimensions. Rated load capacity (body allowance plus normal load) 1 ton—1,040 kg. Body weight allowance 1,500 lb.—862 kg. Chassis only 3,850 lb.—1,750 kg. Oil, water and gasoline 190 lb.—86.5 kg. Chains 69 lb.—31.5 kg. Tool kit 37 lb.—16.8 kg. Chassis weight on front tires (without load) 54%. Chassis weight on rear tires (without load) 46%. Gross weight (capacity load) 7,150 lb.—3,250 kg. Load weight on front tires 0.78%. Load weight on rear tires 99.22%. Gross weight on front tires 27%. Gross weight on rear tires 73%. Overall length of chassis (without body) 205 in.—5,220-mm. Overall width of chassis (at widest part) 61 in.—1,550-mm. Chassis wheel base 140 in.—3,560-mm. Permissible loading space back of driver’s seat 97 in.—2,470-mm. Width of frame (outside dimension, widest part) 34 in.—865-mm. Height of rear end of frame from ground (empty) 33.75 in.—856-mm. Diameter of turning circle (right) 60 ft.—18.3 meters (left) 45 ft.—13.7 meters. Tread of wheels 56 in.—1,422-mm. Road clearance under front axle (lowest point) 10.75 in.—273-mm. Road clearance under rear axle (lowest point) 10 in.—254-mm. Length of reconnaissance body, overall 160 in.—4,072-mm. Width of body 59.875 in.—1,522-mm. Height of body, overall (including top) 62.125 in.—1,580-mm. Weight of body (without equipment) 1,180 lbs.—536 kg. Brief Description.