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The K-744 tractor belongs to the KIROVETS series of machines and has an impressive range of applications. This machine is called ENERGY DENSE due to the number of areas of use. The unit can participate in basic and pre-sowing tillage, work with various attachments, as well as transport goods, distribute fertilizers, perform silage and clear the ground from snow ice.

K-744 is widely used as a tool for cleaning roads and surrounding areas. The machine is a continuation and legal successor of the K-700 model tractor, the production of which was suspended in 2002.

The new KIROVETS meets all the standards of modern agricultural implements. Possessing outstanding technical characteristics, the machine is designed in such a way that the operator-driver is in the most comfortable and safe conditions.

Figure No. 1. "KIROVETS"

Advantages of K - 744

This multifunctional heavy-duty vehicle, fifth traction class, has proven itself so well that the series continues to this day. All four versions are united by a powerful engine, thanks to which the tractors are able to perform work that is impossible for other equipment, in difficult conditions and with any attachments.

The fourth generation of Kirov residents received “registration” from farmers and workers, from miners and lumberjacks, from road workers and in many other professional fields.

Purpose

The main advantage of the KIROVETS series tractors and the K-744 model is their versatility. The unit belongs to the fifth traction class of machines, which allows their use in almost all areas of agricultural work. Tractor used:

• During arable and cultivation activities.
• When working with small seeders and large seeding complexes.
• As a tool for transporting massive loads in the shortest possible time.
• For silage and fertilizer distribution.
• When clearing roads of snow and dirt.

Design features

The first tractors of the K-744 series were equipped with turbocharged eight-cylinder YaMZ-238ND5 engines. This powerful four-stroke engine is equipped with a cold start system and a water-oil cooled radiator.

Power plant 300 hp. consumes 174 g/l per hour at a maximum crankshaft speed of 1900 rpm. The large fuel tank capacity of 630 liters makes long-term operation possible without refueling. The 24-speed Powershift gearbox supports 16 forward and 8 reverse speeds.

Using hydraulic gears, speed mode switching is achieved without loss of power. A hydraulic pump with a capacity of 180 l/min ensures the operation of trailed and attached equipment.

Greater stability, better cross-country ability and maneuverability are given to the tractor by a frame articulated by a hinge system. The turning radius of the huge machine is only 7.9 m. To reduce the impact on the fertile soil layer, double wheels and lower tire pressure are used.

Two drive axles, made of high-strength steel alloys with a rigid type of suspension and especially a self-locking differential and planetary type final drives, distinguish the series from other similar units. The pneumatic system allows the towed equipment and both axles to be controlled separately.

A fairly sealed cabin, with a panoramic view, is equipped with an on-board computer, heating, air conditioning and sound insulation systems. The seat and steering column are adjustable to the driver's parameters. The roof structure can also be changed.

Attachments are attached using a three-point scheme. Trailers are attached using a pendulum fastening.

Specifications:

1. Tractor weight - 13.4 tons
2. Dimensions: length - 7 m, width - 2.86 m, height - 3.69 m
3. Speed: transport - 28 km/h, operational - 4.5 km/h
4. Attachment weight - 8.5 tons

Technical data allows the tractor to work with various attachments: cultivators, seeders, harrows, plows, rippers

What can be included with

Additional equipment is installed on the machine according to the order of the client who contacts the manufacturer. Among the body kit, the following devices and mechanisms can be noted:

• PTO.
• Trailer in the form of a pendulum.
• Dual wheel system.
• Hook-shaped trailer.
• Torque converter.
• Devices for controlling tire pressure.
• Arched and twin wheels.
• Triangular traction mechanism.
• Dump.

Advantages and disadvantages

Thanks to its unique technical capabilities, the K-744 is a leader in its towing class.

Nevertheless, even European farmers pay tribute to our machines when purchasing Kirovets for their farms, rightly assessing their advantages over equipment from other manufacturers.

Attachments

A wide range of additional equipment can be used in conjunction with this tractor, allowing you to solve many problems. These are devices for sowing work - various seeders of mechanical and pneumatic types, the length of which can reach 12 meters.

The tractor can also be used with cultivator equipment, which will quickly get rid of weeds, loosen the soil, level the ground, and apply fertilizers. Harrows of various modifications are used everywhere for loosening the soil layer and its pre-sowing preparation. For the same purpose, plows of various models are used, the number of which can be from 8 to 14.

Tractor series: P, P1, P2, P3

Design engineers are constantly working to improve the technical qualities of the machine. P series engines have even more power compared to the basic version. Each new modification of the model range has its own differences.

The K-744R is equipped with a sprung front axle suspension and a Cummins 300 power plant with 306 hp. with a torque of 2000 rpm. Additionally, the cabin is reinforced with a durable frame.

K-744 P2 is equipped with a Mercedes engine. A slight decrease in crankshaft speed to 1800 rpm is compensated by a more powerful power plant, up to 401 hp, mounted using German technology.

And the most powerful final model - K-744 P3 - has all the advantages of the previous version, supplemented by a more advanced hydraulic distributor and the ability to install heavy ballast.

The Kirovets 744R tractor is ideal for tillage. When plowing a field with a plow, this technique allows you to cultivate up to 150 hectares per day.

History of creation

The machine was designed on the basis of an outstanding Russian manufacturer. The tractor was designed by the group, in particular, the St. Petersburg branch. The KIROVETS series units are the main production line of the company, which has the most outstanding performance. The first models were designed and produced more than 50 years ago, and the plant began its production work in 1924. The fifth generation of Kirov machines - tractors of the K-744 line, appeared in 2000. At the moment, the plant has produced almost 500 thousand representatives of the model.

Tractor Kirovets series 744r

The most popular in this model range is the modification of the Kirovets-POWERPLUS tractor, abbreviated as K-744R. There are such modifications of this machine: K744R1, K744R2, K744R3, K744R3-1, which differ in the power and weight of the tractor.

What the designated Kirovets models have in common is:

1. All-wheel drive;
2. Articulated frame;
3. V-shaped 8-cylinder engine;
4. Manual Transmission;
5. Hydraulic control;
6. 4 gear ranges, 16 of which are forward and 8 reverse.

The Kirovets tractor has multifunctional applications. This technique has gained immense popularity and has a fifth class of traction. It is important to note that today Kirovsky Zavod is the only company producing vehicles of the fifth and eighth traction classes. Moreover, the high power of the machines is combined with a reduced price compared to their European and Chinese counterparts.

The average price for modifications of the K 744R is 6 million and above. It all depends on the configuration of the model. The cost of used equipment depends on the year of manufacture and the actual condition of the agricultural machinery.

Series 744р: technical specifications

• The engine power of the Kirovets tractor lies in the range of 300-428 horsepower.
• The weight of the machine ranges from 10 to 19 tons.
• The specific fuel consumption of the tractor is from 157 to 162 g/l.h.h.
• The highest performance of the hydraulic system of the working equipment is 180 l/min.

The tractor is equipped with a power unit, due to which it is possible to install a trailer and attachments. The equipment also has a power take-off mechanism. It is possible to install a passenger seat next to the driver's seat.

The technical characteristics of Kirovets tractors are constantly updated, which corresponds to the policy of versatility and comfort observed by the manufacturer to maintain the competitiveness of agricultural equipment of this brand.

Description of the tractor

Before studying the technical characteristics of the K 744 p2 in more detail, it is necessary to familiarize yourself with the main features of this model in more detail. It belongs to the heavy class of tractor equipment, which allows it to be successfully used together with various additional equipment.

The manufacturer of the device is the St. Petersburg Tractor Plant, which produces many models of agricultural machinery. The Kirovets 744r2 appears to be an efficient wheeled tractor, which is equipped with a power unit with a capacity of 300 to 480 hp. Thanks to this, it is possible to use the unit for processing agricultural plots of an impressive area, using trailed and mounted equipment with a large mass. High cross-country ability allows the device to carry out work even in off-road conditions, and ease of operation and maintenance has made it incredibly popular.

The tractor copes well with various jobs

Studying the characteristic features of such a model in more detail, it is advisable to highlight several advantages that distinguish it favorably from most analogues:

• the abundance of spare parts on sale, as well as affordable prices for them;
• ease of finding a service to perform repair work;
• the design of the device is simple and reliable; with proper care, it can last for a long time;
• excellent maneuverability and high power;
• wide range of available attachments and trailed equipment.

The abundance of modifications that can be equipped with power units from YaMZ, Mercedes, Cimmins and TMZ deserves special mention. All of them are distinguished by high torque levels, which is especially important when driving off-road, and are also equipped with a special system that simplifies engine starting in winter.

Be sure to read: Tractor MTZ 920 Belarus

Dimensions and weight of the K 744R model range

The photo shows the main overall dimensions of modification P

Dimensions:

Turning radius on the outer wheel:

Tires:

Operating weight:

Power take-off:

Transmission:

Today, additional devices allow you to use the Kirovets tractor as:

• Tractor;
• Mobile welding machine;
• Loader;
• Ice rink.

The modernized series of Kirovets K-9000 tractors, production of which started in 2008, combines the best of domestic developments, as well as innovative experience of European agricultural engineering.

"Kirovets" K-744: purpose and general characteristics of all modifications

Each of the K-744 tractors is a general purpose agricultural machine, all-wheel drive, built on an articulated frame. The main features of this equipment are high productivity, excellent cross-country ability and maneuverability, simplicity and reliability of design, maintainability, expanded capabilities for aggregation with both classic and advanced wide-cut complex tillage, seeding implements and machines.

Any of the K-744R tractors, as one working unit, is capable of preparing and sowing up to 5 thousand hectares of area during the season, without going beyond the correct agro-industrial deadlines. The cost of processing and sowing, calculated per hectare, is thus minimally low.

K-744R of the second half of the 2010s.

In addition to work in the fields, thanks to its serious traction and transport characteristics, the Kirovtsy K-744 is used year-round for the most difficult and energy-intensive transport work. This includes clearing snow, towing equipment stuck in mud or deep snow, etc.

Transmission: automated gearbox T5, ​​16 forward gears and 8 reverse gears, four-mode, with hydraulic power gear shifting and pneumatic mode switching. Leverless control system “Commandpost”: selection of the operating range and gear is carried out using a joystick-shifter and several buttons; There is a program to protect against operator errors. Previously, the K-744 used the classic K-700 transmission, etc. outdated tractor models.

• Overall dimensions: length (with raised hinge) – 7.1 m; width – 2.865 m; height – 3.845 m;
• Base – 3.75 m; track – 2.115 m;
• Ground clearance (under the hinge axis) – 460 mm;
• The smallest turning radius (on the outer wheel) is 7.98 m;
• The highest average conditional pressure of propellers on single wheels is 1.1 kgf/cm2 (110 kPa);
• The highest of the average conditional pressures of the propellers on dual wheels is 0.8 kgf/sq.cm (80 kPa);
• Tire size – 28.1R26;
• Weight (for K-744R1): from 14,020 tons (operational on single wheels, front axle 8.1 tons + rear axle 5.92 tons) to 15,790 tons (operational with a kit for doubling wheels, front axle 9 tons + rear bridge 6.79 t);
• Agricultural attachment: load capacity 8.5 tons;

The axles are unified, with self-locking "no-spin" differentials and spaced planetary gearboxes. The front axle is suspended from the frame on two longitudinal semi-elliptical springs with hydraulic shock absorbers. The rear axle is rigidly connected to the frame. The rear axle is switchable.

Next to the famous and honored “ancestor”.

All tractors are equipped with a hydraulic system of working equipment with an axial piston pump, the maximum productivity of which is 180 liters per minute. 5-section distributor, four pairs of free outlets (hydraulic lines) with flow control of 0-90 l/min, free drainage lines. The basic equipment of each K-744R includes a three-point hitch of category IV “N” (according to ISO), equipped with a quick hitch system, a towing bracket and a hydraulic hook. At the same time, it remains possible to retrofit the tractor with optional equipment that expands its production capabilities. In particular, the pendulum coupling system.

The current line of “Kirovtsev” K-744R family includes 8 models of general purpose agricultural tractors, traction classes from 5 to 8 and power from 300 to 428 horsepower.

Engine configuration

Russian-made engines. V-shaped, 8 cylinders:

Engine photo: YaMZ-238ND-5, V-shaped, 8 cylinders

Mercedes-Benz engines. In-line, 6 cylinders.

Engine photo: Mercedes-Benz. In-line, 6 cylinders OM 457 LA

Not available:

Automated transmission "T5"

In the photo: Automated gearbox "T5"

Revisions and improvements to the T5 automatic transmission:

• The electrical control and automation unit has been improved.
• Now the inclusion of ranges is precision pneumatics.
• The pressure in the control system has increased.
• Increased consumption for lubrication and engine cooling.
• The teeth of the friction clutches are strengthened.
• Added additional disks in the package to speed up switching between on and off modes.
• A new and improved clutch drum design reduces heat when engaging and disengaging.
• New bearings are provided that extend the service life and transmission oil.
• The MPP rail has enhanced sealing.

In the production process of individual components and parts of the tractor, new modern technologies are used:

• hardening using laser equipment;
• processing of parts using high-precision equipment;
• new surface grinding technologies are used;
• heat treatment of parts on a modern thermal line.

Hydraulic system

Tractors of the K-744R series are equipped with a modern high-performance hydraulic system of working equipment (HW). The LS system with axial piston pumps provides highly efficient operation with modern seeding systems thanks to its controlled flow.

GRO for K-744R series tractors – main parameters:

• hydraulic fluid flow – maximum 180 l/min;
• at the outlet of the quick-connect coupling the pressure is 185 bar;
• pressure in the hydraulic system – maximum 210 bar;
• four adjustable hydraulic lines for aggregation with hydraulics of additional attached equipment;
• drainage and free flow lines.

Four sets (pairs) of quickly connected breaking devices are designed to connect the necessary hydraulic lines of agricultural machines or implements connected to tractors to the tractor hydraulic lines. Bursting devices prevent oil from leaking out of a hydraulic hose operating under high pressure in the event of an emergency disconnection or rupture.

The hydraulic accumulator (absolutely sealed, under high pressure) reduces the peak load that occurs when switching spools on the hydraulic valve of equipment in the pump-hydraulic valve section.

To reduce losses in the hydraulic system and eliminate overheating when working with a seeder, which is equipped with a hydraulic fan drive motor, the tractor spare parts system includes a kit for free drainage (bypassing the hydraulic distributor directly into the hydraulic tank) and an additional hydraulic motor drainage kit.

Pneumatic system

The three-circuit pneumatic system is designed for smooth braking of the front and rear axle wheels and trailer wheels, operation of the hydraulic accumulator drive of the parking brake system, air bleed for tire inflation and towing, and blowing of the cassette air cleaner.

The pneumatic system has three circuits independent of each other. If one circuit is damaged, the other two will work without interruption. The 1st and 2nd circuits are designed to brake the front and rear wheels, the 3rd circuit controls the parking brake accumulator and trailer brakes.

Specific fuel consumption

How to correctly estimate the actual fuel consumption for the actual operating conditions of the tractor, based on the parameters indicated in the technical specifications showing the specific fuel consumption?

To calculate fuel consumption in grams per hour, you need to multiply the specific consumption parameter by the rated power. Next, the resulting parameter must be multiplied by 1000, so the consumption in grams is converted to kilograms. Then you need to divide the resulting figure by the density of diesel fuel - standard 0.86. The result of the calculations is fuel consumption in liters per hour.

Approximate calculation of fuel consumption for the K-744R tractor of the “Standard” model:

• Rated power according to technical documentation Ne - 300 hp. (220 kW)
• Estimated specific consumption ge - 162 g/hp h (220 g/kWh)
• Fuel consumption in liters per hour = ???????? x ??????????/ 1000 x 0.86 = 300 x 162/860 = 56.5 l/h (220 x 220/860 = 56.5 l/h)

In real operation, fuel consumption is much lower than according to the calculation formula. The reason is that the calculation is carried out for conditions of maximum equipment productivity - loading with additional equipment, working in a straight line without stopping. In field conditions, any modification of the Kirovets tractor consumes significantly less fuel.

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Energy saturation

Kirovets tractors are characterized by high energy saturation. This term means that the equipment is able to operate for a long time at a high level of efficiency, which is especially important when processing large areas. This characteristic also ensures that the tractor operates in difficult climatic conditions, for example, with large temperature differences in summer and winter, which are typical for the temperate climate zone.

Kirovets equipment is available in two versions - with a Russian diesel engine, and with a Mercedes-Benz engine.

According to the advertising booklet of the Kirov Machine-Building Plant, the energy-rich all-wheel drive wheeled tractor of the Kirovets K-744R brand is the most frequently purchased tractor in Russia. The serial range of this model is represented by modifications K-744Р1, K-744Р2 and K-744Р3, which differ in engine power. It is 300-390 hp. Also, the differences between the modifications of the K-744R tractor consist in the availability of devices for mounted units.

Additional equipment. Ability to work on crawler tracks

The following are also offered as additional equipment for the Kirovets K-744R tractors:

• Kit for doubling wheels (4 drum spacers with a kit for fastening the drum to the axle carrier and fastening additional wheels, 4 wheels).
• Protection kit for raising fallow lands (special protection of the bumper, hood and headlights of the tractor from mechanical influences)
• Bulldozer blade (hydraulic, with a skewing system, using the standard hydraulics of the K-744R tractor. The blade width is 3.4 m, the rotation angle is 30 degrees, the blade skew is 12 degrees.
• Kit for replacing wheels on crawler tracks.

The Kirovets K-744R tractors were successfully tested in field conditions when operating on tracked propulsion systems. This innovative version of the Kirovets provides extremely low ground pressure, while maintaining maneuverability, compactness and maneuverability. Less soil compaction means higher yields in the end. And greater traction and grip, with an engine of the same power, means quite significant savings in diesel fuel. At the same time, the process of replacing wheels with tracked movers is not something “super complex” and is done quite quickly.

Cabin

The St. Petersburg Tractor Plant began producing Kirovets tractors with a modified new cabin of the K-744R series in January 2016. This stage of modernization is aimed at significantly improving the working conditions of the tractor driver.

The main differences of the new cabin are enhanced sound insulation, expansion of the viewing sector due to panoramic windows, a modified steering column with a built-in multifunctional instrument panel, the driver's seat has become more convenient and comfortable, the air conditioning and ventilation system has been improved and optimized, and a modern audio system has been added.

Photo: Panoramic glass - the field of view is expanded, tinting from sunlight is provided.

Video: Overview of the K 744R1 cabin

Improvements:

1. The steering column has been improved - the instrument panel is integrated into it.
2. The driver's seat has become comfortable and convenient.
3. Cabin sound insulation has been improved.
4. The parameters of the ventilation and air conditioning system have been optimized.
5. A modern audio system is provided.

"Kirovets" K-744 and its manufacturer today

Joint Stock Company "Petersburg Tractor Plant" (PTZ) is an integral part of the industrial group OJSC "Kirov Plant". This is one of the very first machine-building plants in the country (founded in 1801), the founder of our tractor manufacturing - the first tractors came out of the gates of this enterprise in 1924.

Both during the years of the Soviet Union and in modern times, the Kirovets brand is the main, well-known PTZ brand in the post-Soviet space and abroad. In July 2022, the plant celebrated the 55th anniversary of the production of the 1st serial Kirovets tractor. In total, over 480 thousand Kirov vehicles were produced over these years (of which more than 450 thousand were produced during the years of the USSR).

Petersburg Tractor Plant is the only manufacturer of energy-rich wheeled agricultural tractors in the Russian Federation. The basis of PTZ’s modern production program is the Kirovets K-744 tractor family. Currently, the company produces 8 modifications of this equipment, as part of the modernized K-744R series. The power of these tractors varies from 300 to 428 horsepower. Kirovtsy also produces 17 types of road construction and specialized machines.

Official representative offices and dealer centers of PTZ operate in more than 50 regions of the Russian Federation and the CIS. The plant traditionally takes an active part in state programs for providing agricultural producers with equipment - through the mediation of Rosagroleasing and in accordance with government decree No. 1432. The structure of the St. Petersburg Tractor Plant includes 10 main workshops, where the full production cycle is carried out, plus the necessary auxiliary structures.

The plant is better equipped than all other Russian tractor manufacturers with advanced high-tech equipment: in 2015 and 2016, more than two billion rubles were invested in technical re-equipment and modernization of production. And after the development and start of production of our own transmission of a modern system, there is a plan to build a separate new high-tech transmission production facility - an investment project with a total cost of 4 billion rubles.

PTZ is one of the few domestic enterprises that, despite all the crisis phenomena in the economy, shows an increase in the following indicators from year to year: net revenue and the number of tractors sold; number of staff and average salary; market share in percentage terms in all regions of Russia. Kirovets is the leader in the segment of wheeled tractors with power from 250 hp. in Russia and Kazakhstan. In the 2010s, deliveries of Kirovets tractors were made to countries such as Germany, France, the USA, Canada, Thailand and Australia.

Basic equipment of Kirovets tractors to 744r

The basic configuration of the tractor includes a category 4 attachment with a lifting capacity of 8.5 tons, as well as lower link hooks from Waltershield. The hydraulic system consists of 8 outputs of working hydraulic lines that respond to load. This system is called Load Sensing. The working fluid enters the system using a pump only when it is needed for the operation of the attachments.

The driver's booth is made of a continuous metal sheathing located on rubber shock absorbers. There are safety plates to ensure the safety of the operator in the event of a tractor overturning or heavy objects, such as pieces of rock, falling when working in quarries. This protective technology has the international name Falling Objects Protective Structure.

A distinctive feature of Russian-made Kirovets brand tractors from their Chinese counterparts is the use of forging, rather than rolling, in the technological processing of the machine’s component parts. Gears, shafts and housing parts are produced by the plant at its own expense. The production process is automated and there is a strict computer system for quality control of parts.

Although the production equipment and software are German, all parts bear the mark of the Kirov plant. Forging differs from rolling in the reliability and fundamental nature of the production process. In addition, in the manufacture of parts for Kirovets, chemical processing of mechanically finished parts is used, in particular, sulfonation and saturation with vanadium.

Review of the “deep modernization” of the K-744 in 2014

During the modernization, a number of improvements and enhancements were made in the design of the K-744R tractors. In particular, Kirovets has become quieter. Noise reduction in the operator's workplace was achieved thanks to the added layer of thermal and noise insulation on the parts of the frame and interior of the cab. As well as the use of multi-layer flooring.

The operator's workplace has become generally more convenient and ergonomic. These improvements continued with the introduction at the end of 2016 of a fundamentally new transmission control system of the “Command Post” type. New ergonomic valve control handles and an improved accelerator control handle have been introduced. To better protect the operator from the sun's rays, a new system of curtains on the windshield was introduced.

In the K-744 cockpit before modernization...

The Kirovets cabin has become cooler in the summer. The efficiency of the air conditioning system has been increased by installing a compressor with a two-strand drive.

The air cleaner was made of a new design, with a cyclone - for ease of maintenance and reliable engine operation. The new design of agricultural hitch has become an even more universal design - suitable for domestic and imported agricultural implements and devices of both categories 3 and 4. The basic configuration of the tractors was prepared for the installation of GLONASS monitoring systems, which can collect and systematize tractor operating parameters using more than 15 indicators at once.

…and after.

The attachment of the K-744R tractors was equipped with reinforced lower links and galvanized vertical and horizontal braces. We have introduced an improved control system for the EHR attachment (but this is an additional option). This is an electro-hydraulic system for positioning agricultural implements, ensuring full operation with reversible plows and other mounted and semi-mounted implements that do not have adjustable support wheels.

Another additional option is a new drawbar designed to handle particularly heavy towed implements.

The new towing device in the modernized K-744R can withstand a vertical static load of 4 tons, the diameter of the hitch pin is 51 mm.

The hydraulics of the working equipment have also been worked out in order to increase the reliability of the working equipment and the ease of its operation. The flows from the hydraulic tank that feed the steering and work equipment pumps were separated. We added a kit for combining sections of the hydraulic distributor to the spare parts kit. It is designed to connect the hydraulic motor of a large seeding complex, requiring a flow of up to 140 liters per minute. The hydraulic system as a whole has fewer parts and connections, a new multi-grade oil has been introduced - reliability and performance have increased when working in severe frosts.

The power take-off mechanism, offered as additional equipment, began to be equipped with replaceable power take-off shafts and a soft start throttle.

Electrical equipment has become well suited to connect to both 24-volt and 12-volt electrical systems found on trailed work equipment. To eliminate peak voltages, a voltage limiter was introduced into the tractor, and for quick and convenient connection of external equipment, 12V and 24V sockets are now installed on the rear wings of the K-744R tractor.

The K-744R has become both more accurate and easier to control. An improved steering system with an NSh-80 hydraulic pump, a metering pump and a Danfoss flow amplifier has increased the reliability of tractor control at low engine speeds and helped reduce noise in the cabin.

The K-744R has generally become more convenient to maintain. In particular, the tractor is equipped with a spacious box in which it is easy and convenient to place tools and consumables, technical fluids and parts of agricultural implements. An informative “Lubrication Chart” was placed on the surface of this box for quickly carrying out scheduled maintenance.

Filling with oil in the modernized K-744R takes less time, since the oil filler neck has been moved to a more convenient and suitable location. The interval for purging radiators has been increased, and this procedure itself has become more convenient. The radiator block area is now protected from chaff and small debris by a protective panel. All radiator blocks are made with folding sections, each of which can be easily and quickly accessed.

Inflating wheels or blowing out filter elements in the field has now become quite easy. An additional connection port was installed in the Kirovets pneumatic system, and the tractor was supplemented with a set of devices for pumping and purging.

After modernization, valve adjustment on engines of the Tutaevsky Motor Plant has become easier and faster. The new design of the hood arch makes it possible to reduce a number of labor-intensive tractor maintenance operations. The cardan transmission was equipped with a quick-release driveshaft between the half-frames. Due to this, when replacing the driveshaft, the need to uncouple the semi-frames is eliminated, and the repair time is reduced significantly.

We increased the reliability of the promotional pore due to the use of closed-type bearings 6218ZZC3. There is no need for forced lubrication of bearings. Simplified maintenance of the rear axle. For better protection from dirt and convenient control, the rear axle breather was moved higher and located behind the fuel tank.

Prices for routine maintenance were fixed at the level recommended by PTZ price list. Intervals for routine maintenance have been increased to 250 engine hours. And the warranty period for all tractors of the K-744R family was increased to 2 years, or 3 thousand engine hours.

Finally, the appearance of the tractor has also been slightly changed, with plastic fenders and a new plastic roof design. These elements began to be made from more modern and durable plastic, which also better preserved the brightness and richness of color.