Power: 62 hp[B] Date of manufacture : 1934 - 1936
Production Manufacturer: Caterpillar Type: Agricultural Crawler tractor Factory: Peoria, Illinois, USA Variants Forty: gas engine Diesel Forty: diesel engine Caterpillar Diesel Forty Power Drawbar (tested): 50.44 hp 37.6 kW Belt (tested): 56.05 hp 41.8 kW Caterpillar Diesel Forty Engine Mechanical Chassis: crawler Cab: Open operator station Transmission: 4-speed gear Dimensions & Tracks Weight: 15642 lbs 7095 kg 16-inch tracks Full dimensions and tracks ... Diesel Forty Serial Numbers 1934: 3G1 1935: 3G335 1936: 3G1957 Final: 3G1971 how to read serial numbers...

Caterpillar D7C	Power: 128 hp	Date of manufacture : 1955 - 1958

Caterpillar D7D	Power: 0	Date of manufacture : 1959 - 1961

Caterpillar D8L SA	Power: 400 hp	Date of manufacture : 1984 - 1987

Caterpillar Diesel Fifty	Power: 73 hp[B]	Date of manufacture : 1933 - 1936

Caterpillar Diesel Forty	Power: 62 hp[B]	Date of manufacture : 1934 - 1936

Caterpillar Diesel Seventy-Five	Power: 103 hp[B]	Date of manufacture : 1933 - 1935

Caterpillar Diesel Sixty	Power: 85 hp[B]	Date of manufacture : 1931 - 0000

Caterpillar Diesel Sixty-Five	Power: 85 hp[B]	Date of manufacture : 1931 - 1932

Caterpillar Diesel Thirty-Five	Power: 50 hp[B]	Date of manufacture : 1933 - 1934