The Caterpillar D5B SA Special Application is an agricultural crawler tractor produced from 1977 to 1985. It features a Caterpillar 3306 10.5L 6-cylinder liquid-cooled diesel engine producing 120 hp (89.5 kW) net power. The tractor has a 6-speed gear transmission with 6 forward and 4 reverse gears, and a crawler drive. It has a fuel capacity of 74 gallons and a hydraulic system capacity of 6 gallons with an open center type, 2000 psi pressure, and 23 gpm pump flow. Dimensions include a length of 153 inches, width of 92.3 inches, and operating weight around 23,320 lbs. The tractor uses 18-inch wide tracks and has various height measurements including 109 inches to the ROPS. Electrical system includes a 12-volt battery and 35 amp alternator charging system.