The MTZ-920 and MTZ-921 tractors are universal row-crop wheeled units, all-wheel drive models 1.4 tk. Sales statistics of MTZ equipment indicate that the best-selling model is MTZ-82, on the basis of which modernization was carried out and its modern version MTZ-920 was created, using the latest technology.
Tractor MTZ 920
The tractor was initially designed to perform various agricultural work, taking into account expanded functionality in other industries: transporting goods, as a drive for stationary machines and equipment. Available aggregation with additional accessories has made the tractor a popular piece of equipment in the municipal sector, construction, industry, road and forestry.
A significant advantage is the affordable price, due to which the payback period for the equipment is short. You can buy an MTZ-920 Belarus tractor for 1.2 million rubles; a used unit can cost from 0.7 million rubles. The price of the MTZ-921 tractor starts from 0.8 million rubles.
Tractor MTZ 921
MTZ-920
The Belarus MTZ 920 tractor is a universal unit that is adapted to various climatic conditions and can be used for a variety of work both in the agricultural sector and for use in other areas.
It belongs to the traction class 1.4, which indicates its great power. Thanks to the all-wheel drive system, the tractor is easy to operate in small areas, orchards, vineyards, and greenhouses. It can be used for cultivating, plowing, sowing grain and harvesting crops.
Various types of mounted, semi-mounted and trailed equipment that can be attached to the machine can significantly expand the scope of its use.
A tractor can easily replace a bulldozer, excavator or loader at a construction site, which makes it even more in demand.
The Belarus MTZ-920 differs from its predecessors in its attractive appearance, improved interior design of the cabin, the use of higher quality lining and a reinforced device for attaching attachments.
There is no significant difference between other similar tractors (MTZ-952.2, MTZ-952, MTZ-900, MTZ-590 and MTZ-592) from the Minsk manufacturer; they differ only in the power of the motor that is installed on a specific modification.
Among the advantages of the Belarus MTZ-920 tractor are the following:
- Ability to use a wide range of attachments.
- Using an economical motor.
- High operational efficiency, thanks to which the purchase of a tractor quickly pays off.
- Reliable and simple power unit.
- Low cost relative to other analogues.
- Versatility in use.
Engine
The D-243 engine model is 4 stroke with 4 cylinders. Its power is 81 hp.
Meeting all modern standards for harmful emissions and noise, the engine is also quite reliable. The working volume of the fuel tank is 4.75 liters.
Dimensions and weight
The MTZ-920 tractor has compact dimensions that allow it to be used in gardens, greenhouses and other facilities. Machine height – 285 cm, width – 197 cm, length – 397 cm.
Cabin
The cabin is modern and comfortable. Wide visibility, a soft seat and the ability to effortlessly reach all levers and controls make working on the tractor comfortable.
Significant advantages are the ability to maintain the necessary microclimate at any time of the year, complete sound insulation, as well as safety while in the cabin.
Transmission
The MTZ-920 tractor has a manual gearbox with 14 forward speeds and 4 reverse. The maximum speed that the tractor can reach is 33 km/h.
The front axle is driven, which makes it easy to cope with sticky soil. Multi-disc brakes.
Specifications
If we talk about technical characteristics, the main differences between the MTZ-900 and 920 lie in the chassis parameters.
| Characteristic | MTZ-900 | MTZ-920 |
| Wheelbase, m | 2,37 | 2,45 |
| Total length, m | 3,835 | 3,98 |
| Width, m | 1,97 | |
| Total height, m | 2,84 | |
| Track, m | ||
| front | 1,45-1,85 | 1,455-1,955 |
| behind | 1,45-1,60 | 1,80-2,10 |
| Agrotechnical clearance, m | ||
| under the front axle | 0,645 | |
| under the rear axle | 0,465 | |
| Minimum turning radius, m | 3,8 | 4,1 |
| Operating weight, t | 3,72 | 3,92 |
| Tire sizes: | ||
| front wheels | 9,2 | 13,6-20 |
| rear wheels | 16.9R38 | |
MTZ-921
The Belarus MTZ-921 tractor is not significantly different from its brother MTZ-920. It also belongs to the 1.4 traction class and has all-wheel drive.
The model is most popular in small farms because it has small dimensions: tractor width is 155 cm, length is 450 cm, height is 235 cm, and weight is 3800 kg.
Engine
The standard Belarus MTZ-921 is equipped with a four-stroke, four-cylinder engine running on diesel fuel.
With a power of 89 hp. and fuel consumption of 226 g/kW per hour, the tractor is considered quite economical.
Modifications of the presented model (MTZ-921.2 and MTZ-921.3) differ only in motor power and increased torque.
Transmission
The model has the following transmission features:
- Mechanical gearbox;
- The gearbox has 18 forward and 4 reverse speeds;
- It can reach forward speeds of up to 35 km/h and reverse speeds of up to 11.5 km/h.
- A dry clutch with a single disc is used.
- To increase the tractor's traction power, the front axle is switched on automatically. Control is simple and easy thanks to the use of hydraulic booster.
Engine
MTZ-920 is equipped with a 4-stroke 4-cylinder diesel unit model “D-243” produced by MMZ with direct fuel injection. The engine has an electronic control system. In terms of harmful emissions, it fully complies with Tier II environmental standards. The arrangement of the cylinders of the D-243 engine is vertical in-line.
Characteristics of the unit installed in the MTZ-920:
- working volume – 4.75 liters;
- power – 60 (81) kW (hp);
- maximum torque – 290 (29.6) Nm (kgcm);
- torque reserve factor – 15%;
- rotation speed – 2200 rpm;
- cylinder diameter – 110 mm.
Types of attachments
To increase the functionality of the tractor, these Belarus MTZ models can easily be equipped with a variety of additional attachments, for example:
- Mowers
- Harrows
- Cultivators
- Chisel equipment
- Rake used to collect dry hay and grass
- Pitchfork
- Boers
- Digging equipment or excavator
- Buckets
- Shredders
- Plow, snow removal equipment
- Bulldozer type knife
- Brushes
- Spreaders
- Hillers
Hydraulic suspension system
The hydraulic mounted system on MTZ 900 series tractors is separate and aggregate. It has a hydraulic lift, which provides several options for adjusting the position of attachments (power, position, height, mixed).
On the suspension axis, the lifting capacity of the rear linkage is 4 tons.
The volume of the hydraulic system is 28 liters, and the maximum fluid pressure reaches 20 MPa. A pump with a capacity of 45 l/min is responsible for pumping liquid.
Operation and repair
The manufacturer recommends using M-8G and M-10G motor oils for MTZ-920 and MTZ-921 tractors. Litol-24 is used as a lubricant.
For the diesel crankcase, motor oils of the M-8DM and M-10DM brands are used, depending on the temperature.
Important! Before operating the engine in winter, it is advisable to pre-heat it to 20-30°C.
Run-in
Before running in, you must perform the following steps:
- Remove dust and dirt from the tractor;
- Make sure there is sufficient oil and fuel level;
- Lubricate large components;
- Fully charge the battery;
- Check the tension of all belts and the reliability of fastenings.
The break-in process itself is extremely necessary for a new tractor, as it has a positive effect on the operating life of all systems.
The following actions are necessary during break-in:
- Check the oil and coolant levels and the cleanliness of the filter elements
- Drain condensate from the pneumatic system;
- Monitor the operation of the engine and other systems.
Approximate break-in time is approximately 30 hours.
After its completion, you must perform the following steps:
- Wash the tractor and change the filter elements;
- Check the tension of the belts, the travel of the clutch and brake pedals, as well as the batteries (if they are not fully charged, charge them);
- Drain the used oil and replace with new one;
- Lubricate the clutch release bearing;
- Add coolant;
- Adjust the gaps between the valves.
All scheduled maintenance must be carried out according to the schedule given in the instructions.
Malfunctions
The MTZ-920 and MTZ-921 tractors are easy to repair and can use parts from other manufacturers.
Below are the main faults:
- The engine does not start due to air in the fuel system or a faulty fuel pump.
- Filter elements often become clogged.
- When using low-quality fuel, the engine may behave unstably.
- The gaps between the valves are not adjusted correctly.
- The appearance of blue smoke during the exhaust occurs due to oil entering the combustion chamber.
- Engine overheating.
- There is noise when shifting gears.
- The connecting disc linings in the brake system wear out.
Aggregation of other manufacturers
- Loading equipment
- Milling machine
- Road mower
- Loader
- Plow and brush equipment
- Trailed mower-conditioner
- Precision seeder
- Universal pneumatic seeders
- Combined chisel unit
- Combined tillage unit
- Cultivator for continuous tillage
- Mounted harrow
- Special semi-trailer
- Tractor dump trailer
- Tractor tipper semi-trailer
- Machine for applying mineral fertilizers
- Trailed mineral fertilizer spreader
- Mounted mineral fertilizer diffuser
- Machine for applying liquid organic fertilizers (barrel for transporting manure)
- Segment finger mower
- Mounted disc mower
- Semi-mounted disc mower
- Silage and haylage packer
- Rotary rake-tedder
- Round baler
- Mounted disc harrow
- Combined mounted soil-cultivating unit
- Mounted reversible plows for smooth plowing
- Heavy garden disc harrow
- Mounted plows for driven plowing
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Owner reviews
Alexander : “I’m not the owner, but I had to work on the MTZ-920.
I really liked that the gears switch on quietly, whether you can hear it or not. It is especially difficult to understand without practice. But it takes effort to turn it on. When used in high gear, it goes slower than MTZ-82.” If you are the owner of an MTZ-920 or MTZ-921 tractor or have worked on them, we invite you to leave a review so that our readers can become familiar with the advantages and disadvantages of the presented models.
Variety of options
In addition to the base model Belarus 920, the Minsk Plant has launched the production of several modifications, which differ in the following technical characteristics: MTZ 920.2 - distinguished by enlarged front wheels and a front axle, which has a beam version.
Such design changes make it possible to use it with mounted loading and unloading equipment. MTZ 920.3 - distinctive design features are the installation of a reinforced linkage, the use of a modified plastic cladding and the use of planetary spur gearboxes in the front axle.
The use of such gearboxes increases traction characteristics, which is important when using agricultural work. MTZ 920.4 - has the same changes as the previous model, but unlike it has a turbocharged engine (84.3 hp).
Such features make the tractor prepared for large volumes of row crop work. MTZ 920.5 – this version also uses a turbocharged engine.
The design uses electronic control of the fuel supply system. MTZ 920.6 – a special feature of the modification is compliance with the environmental standard Stage IV/Tier4, which is necessary for export to European countries.
Advantages and disadvantages of the tractor
The main advantage of the MTZ 920 design is its versatility, which is confirmed by the large number of equipment for aggregation. According to the manufacturer, this amounts to more than 50 units of units:
- plows;
- mowers;
- seeders for cultivated crops;
- cultivators and tillage units;
- harrows;
- equipment for applying liquid fertilizers;
- semi-trailers and trailers;
- fertilizer spreaders;
- balers.
In addition to versatility, owners in reviews note the following advantages:
- indicator of the ratio of power and performance, which is supported by economical operation;
- productivity, as well as the ability to perform work in adverse weather conditions;
- clear and easy controls;
- a comfortable and ergonomic cabin that is unified with the MTZ 2022 tractor;
- maintainability, which is due to the availability of detailed catalogs, diagrams and descriptions of equipment, which, in accordance with the developed dealer network, allows you to quickly purchase the necessary spare parts and make repairs;
- confident and smooth operation of the synchronized gearbox, which can be installed on the TT 4 M crawler tractor;
- cost compared to competitors, which, together with efficiency, allows you to achieve payback.
Operator reviews include the following disadvantages of operation:
- the gearbox will withstand three to four years of service under conditions of intensive use;
- in cases where the engine stalls due to the end of fuel (this sometimes happens with large volumes of work), there are problems with further starting;
- some shortcomings during assembly work at the plant.
Device
The drive axle is a front axle, reinforced with hydraulics and equipped with a self-locking differential. A power unit and a 6-speed gearbox are also installed. Checkpoint. In general, the transmission and clutch are in a closed state and have a speed mode: 14 steps (10/4). Speed range: forward 2.4-34.3 km/h allows you to use the tractor as a means of transportation; back 5-11.3 km/h.
Service brakes are oil-cooled disc brakes and an independent hand brake.
The hydraulics are duplicated by outputs for the rear 2-mode PTO.
Cabin
An air conditioner can and should be used in the MTZ-920, since the tractor cabin is equipped with good seals and has decent noise and heat insulation characteristics. The Gremmer operator's chair is height-adjustable and sprung. The cabin features improved interior finishing with modern materials; it fully complies with the requirements of the EU and OECD directives.
There are windshield and rear window washers, as well as electric door windows. Additional front work lights are mounted on the front light brackets. The panoramic glazing of the cab provides the operator with truly excellent visibility in all possible directions. The level of comfort is such that you can work for a long time, “postponing” the onset of fatigue “for later.”
What can be included with
Additional equipment installed on the tractor:
- three pairs of hydraulic terminals;
- mechanical fixation;
- wheel doubling attachments;
- front weight bracket;
- tug;
- second workplace;
- creeper (increases power in lower gears);
- towing device.
Design features
The traction category of 1.4 in combination with the 4x4 wheel arrangement determines the feasibility of using the model 920 tractor for cultivating soil, caring for planted plants, harvesting and transporting crops.
- Equipped with special equipment, the machine can be used with equal success in farms and municipal enterprises, industrial and construction organizations.
- The technological capabilities of the Belarus-920 tractor are expanded by the use of semi-mounted, mounted and trailed devices. The proposed list includes: excavator and bulldozer equipment, hole diggers and mounted loaders.
- The power take-off capability allows you to activate various types of stationary units, including feed cutters, pumping units, compressors and welding machines.
Users especially highly value the unification of spare parts and components of the tractor with previous models produced in Minsk. In its category, the MTZ-920 differs from its analogues in its more advanced design of the cabin and workplace, and the extension of the service life of individual components and parts. New modifications are perfectly compatible with a large number of attachments.
