The Caterpillar D6C SA Special Application is an agricultural crawler tractor produced from 1970 to 1976. It features a Caterpillar 3306 10.5L 6-cylinder diesel engine delivering 140 hp (104.4 kW) with a 6-speed gear transmission (6 forward and 4 reverse). The tractor has an open operator station with an optional four-post canopy and uses crawler drive. It has a fuel tank capacity of 115 gallons (435.3 L) and weighs 26,100 lbs (11,838 kg). The hydraulics system is open center type with 2000 psi pressure and 22.2 gpm pump flow. Dimensions include a length of 156 inches, width of 94 inches, and height of 105 inches to the exhaust. The tracks come in various widths from 20 to 26 inches. Electrical system includes a 50 amp alternator and two 12-volt batteries.