The DT75 crawler bulldozer is produced by the Volgograd Tractor Plant. Since the launch of the model into mass production, a sufficient number of restylings and upgrades have been implemented. Designers are constantly working to improve the performance characteristics and increase the level of comfort of the bulldozer in order to provide the potential consumer with the highest quality product.
Crawler bulldozer DT 75
All components and mechanisms of the bulldozer are securely mounted on a welded frame consisting of longitudinal spars. The gearbox and rear axle are located in one block.
To create optimal temperature conditions, there is a special ventilation unit in the cabin. The presence of such a system ensures the supply of purified and humidified air. It is turned on automatically when the windows and doors of the cabin are closed.
In winter, the driver can be heated by using a special heater-type heating installation. The design features of the cabin make it possible to operate such a bulldozer in any weather conditions.
Despite the fact that the modern market for special equipment is replete with various offers, the model of the DT75 crawler bulldozer continues to be very popular.
This trend is due to the good technical characteristics and high operational potential of the presented product. Among the advantages of the DT75 bulldozer, the following should be noted:
- high cross-country ability;
- minimum fuel consumption;
- optimal dimensions;
- sufficient level of productivity;
- high maintainability.
The high level of cross-country ability is due to the presence of a fairly wide track surface and an impressive amount of ground clearance. Depending on the configuration, the size of the canvas can vary from 390 to 470 mm. At the same time, the bulldozer ground clearance is equivalent to 326 - 380 mm. This feature allows the DT75 to be used on any soil without a subsequent decrease in labor productivity.
Photo of bulldozer DT-75
The power potential of the component diesel unit remains at 95 hp. This indicator is absolutely enough to solve the relevant design problems. At the same time, a diesel engine operating at low speeds has a minimal level of fuel consumption. For this reason, purchasing a DT75 is a very profitable investment. 15 liters of fuel is enough to operate a bulldozer for one hour.
With a total length of 4400 mm, the width of the bulldozer can vary between 1800 - 2240 mm. The height of DT75 is kept at 2710 mm. Such dimensions make this variation of special equipment as convenient as possible when carrying out various types of work.
The bulldozer can be equipped with a rotating or fixed blade. The installation of such additional equipment contributes to the fact that the overall productivity of the bulldozer tends to increase.
Another significant advantage of the DT75 is its maximum ease of maintenance and high maintainability. Finding the necessary parts will not be difficult, which greatly simplifies the operation process.
The DT75 crawler bulldozer has a durable and extremely stable design. Despite this, sometimes it may be necessary to carry out repair work. This need manifests itself as a result of inappropriate use of special equipment or as a result of prolonged use of a bulldozer without proper maintenance.
In addition, the tracked DT75 is significantly inferior in mobility and maneuverability to wheeled bulldozers. Accordingly, the speed characteristics in this case will also be significantly lower.
Purpose
The DT75 crawler bulldozer has a wide range of applications. Such special equipment is very actively used on construction sites, as well as for agricultural purposes. A significant advantage of the model is the ability to operate in conditions of slightly steep slopes. This becomes possible if the slope does not exceed 20 degrees.
The presence of tracked traction has a very positive effect on the cross-country ability of the bulldozer. As a result, it can be easily used off-road or in marshy areas.
If you install additional equipment using DT75, you can clear the streets of snow. However, in most cases it is used for excavation or for loading and unloading purposes. To solve various problems, the bulldozer can be equipped with removable and mounted equipment.
Working with attachments
The equipment can be equipped with various attachments. It is controlled using a special hydraulic system, which is equipped with two working cylinders.
The angle of the blade when deviating from the tractor axis can reach 26-270. This makes it easy to remove snow from the road or create embankments. In one pass, a standard blade removes a layer of soil up to 100 cm high.
One of the distinctive technical characteristics of the T-170 bulldozer is the interchangeability of spare parts on old and new models of equipment. You can find out that the John Deere 730 sowing complex has a clogging alarm for each seed tube here. In addition, in the article you will find a description of other models of this equipment.
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The speed of the blade (raising and lowering) is 15 cm/s. Therefore, any work using attachments is completed quite quickly.
The height to which the DT-75 can lift the blade is more than 600 mm.
The weight of attachments for the bulldozer, with which it will work without difficulty, reaches 900 kg. This allows you not to skimp on the strength of the material used for the manufacture of dumps and other additional equipment.
Device
The presence of long-stroke hydraulic cylinders allows us to minimize the level of working pressure in the hydraulic system. As a result, the service life increases and overall productivity increases.
Diagram of the bulldozer DT-75
1 - engine; 2 — cabin; 3 - fuel tank; 4 — levers of attachments; 5 — power take-off shaft; 6 — trailer bracket; 7 - drive wheel; 8 — central gear; 9 — caterpillar; 10 — gearbox; 11 — support wheel; 12 — clutch; 13 — guide wheel.
The total weight of the bulldozer complete with main equipment is kept at 7.4 tons. If optional elements are installed, this total weight of the machine will tend to increase.
Driver's cabin
Manufacturers have taken good care of implementing high-quality sound insulation of the driver's cabin. In many ways, they managed to achieve this thanks to the maximum tightness of the connections. As a result, an optimal temperature regime is created inside the cabin at any time of the year. As an option, this element can be additionally equipped with a heating system or air conditioning.
Instruments and steering mechanisms inside the cabin are located in accordance with all ergonomic requirements. It should be noted that there are no additional elements that could interfere with the normal control process.
However, there are no corresponding direction indicators on the main dashboard. Some features also include the absence of rear-view mirrors. The driver will have to rely on his instincts.
Engine
The DT75 crawler bulldozer is equipped with a four-stroke hydraulic cylinder engine, the rated power of which is kept at 95 hp. The power device component is manufactured by a company from Finland. A special feature of such units is the presence of a pre-heater, the presence of which facilitates the process of starting the engine even at minimum temperatures.
The multi-speed gearbox has 10 forward speeds and 5 reverse speeds. This allows the DT75 to be used in various conditions. This transmission, working in tandem with the engine, allows you to minimize fuel consumption. So, one hour of work may require 15 liters of fuel. The DT75 crawler bulldozer is capable of speeds of up to 12 km/h.
Attachments
Attachments are installed on the DT75 bulldozer tractor depending on the specifics of the work being carried out. Various manufacturers offer a fairly wide range of optional installations. Some are used for agricultural purposes or in snow clearing.
There are modifications of the DT75 with a rotary or stationary blade. The width of this element is 2520 mm. In this case, the height of the equipment is equivalent to 800 mm. In most cases, the blade is installed for the purpose of subsequent road cleaning.
Transportation problem
The design features of the bulldozer significantly facilitate the process of transporting the DT75 through the use of railway platforms. But given the fact that not all objects can be connected to a railway track, manufacturers have taken care of an alternative method of delivering special equipment. Here we are talking about transportation by road. In this case, it may be necessary to use a trailer with a low frame.
Important changes
The first major modernization was carried out in 1967. The DT-75M modification even received its own name - Kazakhstan.
The “Kazakhstanets” differed from its predecessor in its power unit. The car was equipped with an A-41 engine, the power of which was 90 hp. With. with a working volume of 7.45 liters.
Despite the increased power, specific fuel consumption decreased and amounted to 185 g/l. With. at one o'clock. The new engine weighed more - 930 kg, which means the weight of the tractor also increased.
Now it reached 6350 kg with a ground pressure of 0.48 kg per square meter. cm. But at the same time, the production of a modification with the SMD-14 engine continued.
The reason is the low cost of such machines. The increase in traction characteristics of the DT-75 made it possible to expand the list of equipment: moldboards, plows, harrows, cultivators, seeders, sprayers, irrigation equipment - this is not a complete list of devices..
Specifications
The technical characteristics of the DT75 bulldozer allow it to be used in various conditions. The high potential for cross-country ability in this case is ensured due to the presence of high ground clearance and tracked traction. The table shows the main operational characteristics of the bulldozer.
| Characteristics | Indicators |
| Dimensions: | |
| - length | 4400 mm |
| - width | 1850-2240 mm |
| - height | 2710 mm |
| — ground clearance | 326-380 mm |
| total weight | 7400 kg |
| Volume of the tank | 360 l |
| Number of gears: | |
| — forward movement | 10 |
| - reverse | 5 |
| Chassis type | crawler |
| Engine | |
| - power | 95 hp |
| — number of cylinders | 4 |
| — torque | 15 Nm |
| Maximum speed | 12 km/h |
| Fuel consumption | 15 l/hour |
The bulldozer on the DT75 crawler chassis is available in four different configurations - C1, C2, C3 and C4. In the first case, we can talk about the additional use of hydraulic system components, rear linkage and remote cylinders. The C4 modification has a similar configuration, but it is noted that there is no remote cylinder. DT75 C3 does not have a built-in hydraulic system and rear linkage, and the C2 variation can be additionally equipped with a distributor and hydraulic tank.
Video review of the DT-75 bulldozer:
Power
On the front part of the DT-75 tractor frame there is a four-stroke water-cooled SMD-14 engine, which produces 75 “horses” (Kharkov Engine Plant). The power plant weighs 720 kg, its volume is 6.3 liters. The engine of the DT-75 tractor is protected by a hood, and its radiators are protected by a canvas curtain. SMD-14 is equipped with a PD-10U gasoline starting engine (10 hp) with an electric torch heater and an electric starter. The engine is also equipped with a G-214-A1 generator with a power of 180 W and an NSh-46U oil pump.
Crankshaft speed at rated power
