Here is the translation of the text to English:

In the autumn of 1978, the completely new Deutz DX series was introduced, with the largest models equipped with a new 6.1-liter air-cooled six-cylinder engine. The original models were the DX 140 (125 hp) and the DX 160 (150 hp). Both engines were turbocharged.

The DX 140 and 160 used Steyr's 24+8 transmission, which was the first transmission with a powershift used by Deutz.

In 1980, the naturally aspirated DX 120 (110 hp) was introduced, and the DX 140 was replaced by the slightly more powerful 145 (132 hp). The 145 featured a new Deutz own 40+10 transmission, while the 120 had the same 15+5 transmission as the smaller DX models. At this stage, four-wheel drive was equipped with a dog clutch.

In 1981, the tractor brand changed to Deutz-Fahr. In 1982, the cooling fans were equipped with a thermostat to save fuel. The new front axles were equipped with a center pin and a dog clutch.

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