KZKT » 7426 / 74262 / 74263

KZKT 7426 was a tractor of the third generation, developed by KZKT based on MAZ 537 chassis. The first 7426 with a load on the fifth wheel was created in 1978 and could work in a combination with a GCVW of up to 94.2 tonnes. Technically it was very similar to MAZ 537G with a winch, but differed by a new engine and twin row cabin from MAZ-545.

The new tractor was fitted with a turbocharged D12AN-650 V12 diesel with an output of 650 hp. Transmission and suspensions got minor changes. The second new feature was a welded twin row closed cabin with 6-7 seats, flat front mask and 3-piece windshield. Curb weight of KZKT 7426 was increased by 2 tonnes (up to 24.2 tonnes) compared to MAZ 537G. GVW raised by 1.5 tonnes (up to 51.2 tonnes). Overall dimensions - 9840x2880x2970 mm. Maximum speed was increased from 60 to 65 kph. Fuel consumption - 108 liters per 100 km. Range with additional fuel tanks - 1760 km.

After government tests 650-hp KZKT 7426 was recomended for service. In 1984-87, two updated tractors were presented - KZKT 74262 and KZKT 74263. The 74262 was a future development of the base 7426 with a winch, while the 74263 was a lighter version without a winch and lower by 5 tonnes (up to 46 tonnes) GVW.