Thinking about purchasing a new car? Use our new Car Loan Calculator to estimate your monthly car payment!

Specifications for an International Harvester TD9 Bulldozer

by James Rutter

International Harvester (IH) began manufacturing tractors in 1909. From 1939 to 1959, IH produced the TD-9 tractor. According to the “Tractor Data” website, IH built 59,800 of these models, which it produced at its factory in Melrose Park, Illinois. The company offered the TD-9 with a bulldozer attachment. Farmers used these tractors for field work and the U.S. Military employed the TD-9 as a light tractor during World War II.


International Harvester equipped its TD-9 models with one of three engines. Earlier models used a four-cylinder, vertical I-head diesel engine. This engine’s bore measured 4.4 inches and its stroke measured 5.5 inches. It had an overall displacement of 334.5 cubic inches and a compression ratio of 15.7-to-1. A 13-gallon liquid coolant system kept this engine from overheating. It had a 1,400 rpm rating. In 1956, the TD-9 adopted a larger, 350-cubic inch four-cylinder diesel engine. This engine had a bore of 4.5 inches and a stroke of 5.5 inches. It also used a liquid coolant system and it had a compression ratio of 15.6-to-1. This engine had a maximum rpm of 1,550. The company also offered a liquid-cooled six-cylinder engine for the TD-9. This engine had a 282-cubic-inch displacement and a bore that measured 3.69 inches and a stroke that measured 4.39 inches. It had a compression ratio of 18.1-to-1 and hit a maximum rpm of 1,700.


The TD-9 stretched 114 inches in length, had a height of 64 inches and spanned a width of 75 inches. Original models weighed 10,800 lbs. International Harvester installed a 31 gallon fuel tank in the TD-9.


Operators shifted the TD-9 through the five forward and one reverse gear of its transmission.


A pair of 6-volt batteries powered the TD-9’s electrical components. The front and rear wheels rode on tracks. The original four-cylinder engine produced 46.7 horsepower to drive the belt and 39.5 horsepower to drive the bulldozer’s drawbar. The larger four-cylinder engine generated 62.7 horsepower for the tracks and 52.8 horsepower for the drawbar. A TD-9 equipped with the six-cylinder cranked out 69.1 horsepower for the tracks and 56.3 horsepower for the drawbar.

About the Author

Since 2005, James Rutter has worked as a freelance journalist for print and Internet publications, including the “News of Delaware County,” “Main Line Times” and Broad Street Review. As a former chemist, college professor and competitive weightlifter, he writes about science, education and exercise. Rutter earned a B.A. in philosophy and biology from Albright College and studied philosophy and cognitive science at Temple University.

More Articles

Photo Credits

  • FourOaks/iStock/Getty Images