John Deere acquired the Waterloo company in 1918 and continued the production of its N model. Waterloo Boy had already initiated the development of the new D model, which was finally put on the market in 1923. The D still had a 2-cylinder engine and a 2-speed transmission. The engine power was 30 hp and the nominal speed was 800 rpm. The fuel could be, for example, motor gasoline. The 1931 model already had 40 hp. In 1933, pneumatic tires became an optional accessory. In 1935, a 3rd gear was finally introduced. Many competitors already had 4 gears at this point.

In 1939, the redesigned D was introduced, to which the designer had added their personal touch in the same style as the previously introduced smaller models. The placement of the driver's seat was now more ergonomic, there was an instrument panel behind the steering wheel, and the arrangement of the controls had been improved. The clutch was still a long hand lever on the right. As an option, electric start and lights were now available, each with a separate 6-volt battery. A couple of years later, steering brakes became available. With the introduction of the diesel model R in 1949, the demand for the D declined and production eventually ended in 1953. Over thirty years, a total of approximately 160,000 D model tractors were produced.

This is an automated translation. Please report any issues in the translation.