DT-75 "Kazakhstan". History, modifications, features

Due to the vastness of agricultural land, as well as the developed construction industry, the USSR needed a large number of vehicles of appropriate designation, such as tractors. The most mass caterpillar Soviet model is DT-75. Kazakhstan established its production in 1986 at the Pavlodar Tractor Plant. This is a model of traction class "3". Next, the general history of the car, its characteristics, as well as the features of the Kazakhstani versions are considered.

History

DT-75 was developed as a replacement for DT-59. The first experimental machines were assembled in 1956. According to the test results, after 4 years, the Volgograd Tractor Plant was modernized to produce a new model. She took 3 years, and in 1963 began the release. Since then, until 2009, more than 2.7 million cars have been produced. In 2013 they celebrated the 50th anniversary of the model.

DT-75 "Kazakhstan" was launched in 1968 at the Pavlodar Tractor Plant, as the Russian plant alone could not meet the demand for this machine. It was produced in several modifications until 1998, when the enterprise went bankrupt.

Frame

All units and units of the machine are mounted on a welded frame. It includes two longitudinal longitudinal members of a rectangular cross-section.

Engines

Initially, the tractor was equipped with a SMD-14 engine. This diesel engine power of 75 hp. The 75N version was equipped with SMD-18N, which differed from the above-mentioned engine by the presence of a turbo-supercharging, which ensured a power increase of 20 liters. from. Modification 75M has a motor A-41 power of 90 hp. Variants 75B and 75K were equipped with a power unit SMD-14NG with a capacity of 80 hp. The current version of the 75DE has a diesel engine A-41SI.

Transmission

The 7-speed four-way transmission is located with the rear axle in a single casing. Clutch clutch is constantly closed, two-disk, dry. Version 75K differed by the presence of a reverse gear.

Chassis

The rear axle is equipped with two planetary rotary single-stage mechanisms with belt brakes. The running gear itself includes guiding and driving wheels, supporting rollers, balance carriages, two caterpillar chains. The swamp version of 75B had a special running gear. She expanded the tracks of the tracks and ensured the possibility of lowering the guide wheels to increase the bearing surface and lower the pressure on the ground.

Cabin

The first models had a cabin, unified with GAZ-51, represented by a two-seater all-metal sealed compartment. On the 75M version, they increased the ceiling vyshtampovku and bent the control levers to the tractor driver. The cabin of a special design was different for the operation on steep slopes of 75K. She had bodies of duplicated control. Since 1978, they began to install a new sprung cockpit with feathers. It was shifted to the right of the axis, and a fuel tank of increased capacity was installed in the vacant seat.

Kazakhstani modifications

Pavlodar Tractor Plant was founded in 1966 initially with the aim of producing these tractors. In 1968, he began the production of transmission parts DT-75. In the same year DT-75 "Kazakhstan" was launched. It was produced in the versions 75M, 75ML, 75T, 90P, 75MLC. They are discussed in more detail below.

DT-75M

Production of DT-75 "Kazakhstan" began with this modification, and a little later its release was completely transferred to Pavlodar Tractor Plant, where the assembly continued until the late 80's. This machine is designed for agricultural work.

The modification in question was equipped with the first 7.43-liter A-41 engine with 94 hp. Later it was installed 4.75-liter engine D-245.552 with a capacity of 95.2 hp. The new engine with a slight advantage in performance significantly exceeds the A-41I in economy.

The checkpoint is the same as the original version, 7-speed four-way, mounted in a single hull with a rear axle. The clutch was also left as the initial one, represented by a dry, single-disk, permanently closed clutch. As an option, the tractor DT-75 "Kazakhstan" was equipped with a reverse gear, which allows to lower the minimum speed and increase the efficiency of the machine. A power take-off shaft was standardly installed, and optionally an upgraded version was offered with a rotation speed increased from 540 to 1000 rpm.

For turning, two planetary single-stage rear axle mechanisms are used. Braking is carried out by tape-type mechanisms.

The construction of the running gear also remained original. The width of the caterpillar chain is 390 mm.

The cabin, in comparison with the first model, was moved to the right on the DT-75M, increased its height and equipped with new plumage.

DT-75ML

Since 1986, the Pavlodar Tractor Plant started production of DT-75ML. From the modification considered above, it differs, first of all, the design of the cabin and the exterior lining of the engine compartment. The cabin increased, so the height increased to 2923 mm, whereas this characteristic of DT-75 "Kazakhstan" of the previous version was 2304 mm. The new cab features a frame structure and is fixed to the base by six shock absorbers. Changed the dashboard, controls and equipment of the cabin.

In the early 90's. DT-75ML was subdivided into industrial (DT-90P) and agricultural (DT-75T) modifications.

DT-75T and DT-90P

These models were similar in chassis and transmission with the above modification of DT-75 "Kazakhstan". The technical characteristics were different: these versions are equipped with a D-440-21 engine with a turbocharged power of 95 hp. The rest of the design is the same as that of the old car. In addition, technically, these modifications are completely identical to each other.

DT-75MLK

This car was distinguished, first of all, by a wheelbase instead of a caterpillar. In addition, it was equipped with a 170 hp engine. And torque converter. Due to this, it was easily transformed into the DT-75 "Kazakhstan" bulldozer. Production of this model was launched in the early 90's.

Conclusion

In 1998, the activity of Pavlodar Tractor Plant stopped due to bankruptcy, and the production of successors of these machines continues at the Vladimir plant.