The first copies of Belarus 1221 rolled off the assembly line in 1979. The model turned out to be quite successful. After the opening of the brand’s production points in Russia, the tractor began to be assembled in Elabuga, Smolensk and Saransk. The tractor was modernized regularly, the last global update took place in 1994. minor improvements took place later. Thanks to constant modernization, special equipment remains in demand on the market.
Belarus 1221, despite its versatility, is positioned as an energy-rich agricultural tractor, therefore the main direction of its activity is related to the field. List of works performed using the model in agriculture:
- soil treatment;
- fertilizer and chemical treatment of crops;
- cultivation and harvesting of potatoes, corn, grains and vegetables;
- harvesting of industrial crops (rapeseed, flax and others);
- removal and application of organic fertilizers to the soil;
- garbage collection;
- full cycle of operations for the preparation of silage, hay, silage and other feed;
- transport work.
Belarus 1221 is in demand not only in agriculture. The tractor is used by road and municipal services, construction organizations and industrial enterprises. A large reserve of power allows you to efficiently perform complex tasks.
Modifications and features
The popularity of Belarus 1221 led to the emergence of various modifications of the tractor. Among the most famous are:
- Belarus 1221 – basic variation;
- Belarus 1221L – version for work in the forestry industry. Optimally suited for loading, skidding and timber transportation operations;
- Belarus 1221V.2 - analogue of Belarus 1221 with a reversible control post. Not supplied to the Russian market since 2011;
- Belarus 1221.2 – a series with increased traction for work in agriculture. Its feature is the presence of a hydraulic lift and a diesel engine S;
- Belarus 1221.3 – series with S2 unit;
- Belarus 1221T.2 – modification with a driving front axle and a sun canopy.
Analogs of the tractor are foreign models Case IH, Fendt 900 Vario and YTO X1304.
Positive qualities of Belarus 1221:
- simplicity of design and significant maintainability;
- reliability;
- significant efficiency of most operations;
- cheap spare parts;
- unification of many components with other products of the Minsk Tractor Plant;
- the ability to perform quick diagnostics and reduce the time spent on troubleshooting;
- economical consumption of lubricant and fuel;
- possibility of use at temperatures from -40 to +40 degrees;
- Suitable for working with almost any type of soil.
Disadvantages of the tractor:
- regular occurrence of problems with the clutch basket with frequent changes in the nature of agricultural work;
- insufficient efficiency of the cooling system in hot weather;
- engine turbine failure.
Buy MTZ-1221 box repair in Nizhny Novgorod
Remove the bearing, sliding gear, take out the shaft. Remove the reverse intermediate gear 5 fig. from the housing. Special equipment should be diagnosed if the transmission starts to switch off spontaneously.
In this design, the driven gear is mounted on shaft 1 and the reverse gear. The sets of parts on the primary, intermediate, secondary shafts and the low gear and reverse shafts are tightened with nuts 12,15,47 and Noise and other problems in the transmission If noise appears during operation of the gearbox, and it does not come from the gears, then it is recommended to change the bearings . Additionally, the spring of the mechanism is adjustable. The procedure for disassembling the gearbox and the features of removing individual parts are shown in Fig. The bushing, in turn, is attached to the main gear of the second stage of the gearbox; it is mounted on two roller bearings. The shaft for low gears and reverse gear is 3 cm. If there are no external causes of failure, then pay attention to the secondary shaft. The design of the mechanism in question includes many parts.
Remove covers and gaskets. Parsing delivery of MTZ1221
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Specifications
Dimensions:
- length – 4950 mm;
- width – 2250 mm;
- height – 2850 mm;
- wheelbase – 2760 mm;
- ground clearance - 465 mm;
- front track width (adjustable) – 1550-2270 mm;
- rear track width (adjustable) – 1500-1900 mm;
- minimum turning radius – 5300 mm.
The structural weight of the Belarus model is 1221 – 5300 kg. Load capacity reaches 4500 kg. The driving speed ranges from 2.1-33.8 km/h (forward), 4-15.8 km/h (backward).
Wheel characteristics:
- front – 420/70R24;
- rear - 16.9R38 or 18.4R38.
MTZ gearboxes
Minsk Tractor Plant is one of the largest manufacturers of heavy equipment in the post-Soviet space. In addition to the tractors themselves, we also manufacture the entire list of components and assemblies used to repair equipment.
- official representative of the MTZ production association. The company's warehouse has gearboxes for MTZ 80, 82 tractors. You can buy them at factory prices.
Engine
For Belarus 1221 there are 3 power plant options available:
1. 4-stroke diesel engine D-260.2 with gas turbine supercharging and liquid cooling. The motor was installed on the first modifications of the tractor and had an in-line arrangement of cylinders. The inlet and outlet valves of the unit are made of heat-resistant steel. The design of the installation is characterized by increased reliability and is certified according to GOST 17.2.2.02 and GOST 2000.
Characteristics of the D-260.2 motor:
- working volume – 7.12 l;
- rated power – 96 (130) kW (hp);
- design rotation speed – 2100 rpm;
- maximum torque – 500 Nm;
- compression ratio – 16;
- number of cylinders – 6;
- cylinder diameter – 110 mm;
- specific fuel consumption – 226 (166) g/kW per hour (g/hp per hour).
2. 4-stroke diesel unit D-260.2S. In terms of design, the motor is practically the same as the D-260.2, but differs in some respects.
Characteristics of the D-260.2S motor:
- working volume – 7.12 l;
- rated power – 98 (132) kW (hp);
- design rotation speed – 2100 rpm;
- maximum torque – 446 Nm;
- number of cylinders – 6;
- cylinder diameter – 110 mm.
3. 4-stroke diesel engine D-260.2S – the most powerful option.
Characteristics of the D-260.2 S motor:
- working volume – 7.12 l;
- rated power – 100 (136) kW (hp);
- design rotation speed – 2100 rpm;
- maximum torque – 568 Nm;
- number of cylinders – 6;
- cylinder diameter – 110 mm.
All modifications work perfectly with Russian fuel, which is an important point for consumers. The fuel tank capacity is 160 liters.
Switching gearbox MTZ 1221 diagram
Quantity per "": 3. An inertial synchronizer 42 is located on the shaft splines, with the help of which the 1st or 2nd gear is engaged.
If such malfunctions occur as: extraneous noise in the gearbox, the front axle does not engage, the differential lock does not work, the PTO does not engage, it is necessary to measure the oil pressure with a mechanical pressure gauge in the gearbox hydraulic system.
Send us the file to rostov belshina. Gear couplings 22, 53, 34 are moved by forks 78 fixed to the leads; other parts are not shown in the figure.
The modification belongs to traction class 2, which means the equipment can be used both for cultivating soil for crops and in construction or public utilities.
I agree to the processing of my personal data. The MTZ gearbox is a manual gearbox with constant mesh gears, a range of 4 forward ranges and 2 reverse ranges with gear shifting within the ranges using synchronizers. On the shaft splines there is a sleeve 55 with external and internal splines and a creeper gear 56 mounted on it.
Pull out the cylinder rod 11, align the holes in the lever 5 and the fork. Required spare parts:. The MTZ 2022.3 tractor drowned. WHAT IS THE EFFECT OF Harrowing.
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Photo
Design and operating features
Belarus 1221 is a front-wheel drive tractor. A specialized counterweight is mounted on the front bridge beam, allowing you to work with additional equipment. The ballast weight ranges from 510-1025 kg. Drive wheels of a small radius are installed in front, and large radius wheels are installed in the rear. This arrangement allows the machine to operate effectively on wet ground and perform complex agricultural operations. Low pressure on the soil minimizes damage to the top fertile layer. To reduce pressure, dual wheels are used.
The front axle of the Belarus 1221 model can be beam-coaxial or planetary. It is equipped with 2-support pivot units, hydraulic steering cylinders, planetary gearboxes and a reinforced beam. Wide front wheels and additional reinforcement provide a secure base for mounting attachments. The rear axle is equipped with planetary gearboxes and an electro-hydraulic differential control system with 3 modes (automatic, off, on). The axle shafts of the rear axle and final drives are reinforced, allowing the use of powerful equipment.
The Belarus 1221 brake system uses 3-disc dry elements, which affect first the rear and then the front wheels (multi-disc brakes are available upon request).
The transmission of Belarus 1221 differs from other models of the brand. Among its features:
- reinforced clutch with 2 discs and rigid body;
- synchronous independent drive.
The transmission uses a new manual gearbox with 24 speeds (16 forward and 8 reverse gears). The 2-disc clutch is mounted in a robust housing. The power take-off shaft (rear) is made in a 2-speed design with an independent or synchronous drive.
The Belarus 1221 model uses 2 types of hydraulic systems:
- with 2 vertical cylinders in a hydraulic lift;
- with a horizontal power cylinder operating autonomously.
There are 3 outputs for trailed and mounted devices. The tractor's hydraulic system is manufactured by BOSH and is highly reliable. A pumping station with liquid filtration and temperature control is responsible for its operation.
Belarus 1221 works with a wide range of equipment:
- mowers;
- cultivators;
- devices for planning;
- harrows;
- lifting devices;
- plows;
- fertilizer diffusers;
- coupling devices;
- traction devices.
The on-board electrical system (12 V) consists of a 1000 W generator, a powerful battery and a 24 V starting system.
The operator's cabin is made on the basis of curved rigid shaped profiles with inserted spherical windows with tinting. There is an emergency hatch on the roof. Lighting devices allow you to work on the tractor in the dark. The cabin has a ventilation and heating system that maintains an optimal microclimate. Through the use of specialized upholstery and sound-absorbing mastics, operating comfort is achieved, and moisture, vibration and noise practically do not penetrate into the operator’s cabin.
The tractor's movement is controlled by means of hydrostatic steering with 2 hydraulic cylinders located in the steering linkage and a metering pump. The operator adjusts the direction directly from the operator's cab, which is very convenient. To work with units, 2 posts are installed: the main one is located to the right of the operator, the additional one is on the dashboard on top. Levers and keys allow you to regulate the fuel supply, lighting operation and control equipment.
Pros and cons of the MTZ 1221 tractor
Like any serious equipment, the MTZ 1221 tractor has both a lot of advantages and some minor disadvantages.
Pros:
- affordable price. The tractor is quite inexpensive. In addition, you can easily purchase spare parts for it, carry out repairs yourself due to simple assembly, and the equipment is unpretentious to use. Therefore, we can safely say that the price-quality ratio here is excellent;
- all important elements of the tractor are in the public domain, which greatly facilitates repairs and reduces time;
- the machine differs from foreign analogues in that you can independently eliminate the failure in the field, thereby reducing downtime to a minimum;
- a large selection of attachments compatible with the tractor significantly expands its scope of application.
The disadvantages include a relatively small fuel tank and a short service life of air conditioners. Many consumers also note this point - air for the engine enters at the level of the hood, which is why the filters quickly become clogged. This could be corrected if labor were brought to the roof.
