After the war, in the years 1946-48, Massey-Harris introduced a wide range of tractor models in America, which included the models 20, 22, 30, 44, and 55. This series used Continental gasoline, petrol, and liquefied gas engines, and later also diesels. The tractors' power roughly corresponded to the model numbers. A new technology was the power take-off operated by a hand clutch, independent of the driving clutch.

Of the models, the English were interested in the 44, which was put into production at M-H’s combine harvester factory in 1947. The model designation for the version adapted for Britain was given as 744PD, where the 7 was generally used to mark M-H products manufactured in Britain. Instead of the original Continental gasoline/petrol engine or the Continental diesel introduced simultaneously in America, the British model was equipped with a slow-running 6-cylinder Perkins P6 engine. The rear and chassis were of American production. There were 5+1 gears. The shape of the engine hood differed slightly from the 44.

In 1949, production was moved to Scotland and the model designation was changed to 744D. Starting in 1950, a hydraulic 3-point hitch was offered as an optional feature, and from 1952 it was standard equipment.

In 1954, the 744D was replaced by the 4-cylinder 4.4-liter 745D. Despite the smaller engine, it had as much power as before. In 1957, production of the model 44 was discontinued in Canada, and the 745D was replaced by the 745S, which had a welded frame instead of the previous two-piece cast frame. Massey-Harris tractor production in Britain ended in 1958.

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