MTZ 1221 - tractor of the second class
You can't do without this technique! Construction, utilities, forestry - there is work everywhere for tractors.
Pull the "passenger car" out of the mud - and then the tractor will come in handy! Let's get to know one of them and focus on the second class tractor, model 1221.
MTZ 1221 technical characteristics of which, we will consider a little later, is a 2.0 class of special equipment. Purpose:
- Performing various tasks in agriculture.
- Seeding company preparation.
- Harvesting work.
In addition, MTZ 1221 is used in the municipal sector, the construction industry, and industry. It is used for work in the forestry industry.
MTZ 1221 photo of the equipment that you see works in different climatic zones and on different soils. It also serves soils with a low bearing capacity.
Due to the possibility of using a wide sector of attachments and additional equipment, it aggregates with a large number of special equipment of class 2. It can work with some machines of class 3.
Tractor MTZ 1221 video presented in the article gives an idea of its capabilities and potential. Simplicity of design, reliability of units and mechanisms in combination with high performance make it a reliable and irreplaceable assistant in many areas of the economy.
In addition, the MTZ 1221 tractor consumes a minimum amount of fuel and lubricants. There are no problems with its repair. Minor malfunctions can be carried out in the field without having to constantly move equipment to stationary workshops.
Reliability and long-term operation of the tractor is possible with proper maintenance. For these purposes, a special set of measures has been developed, which includes:
- Daily activities. Maintenance of MTZ 1221 is carried out every 10 hours of its operation.
- Then the TO complex is performed after 125 working hours. The next 250 and 500 hours.
On MTZ 1221, the reviews are positive. At work, the technique is experiencing maximum loads. Due to the constant forceful action on the mechanisms, the role of TO is increasing. To find out about the adjustment of the MTZ 1221 valves and, in general, about the maintenance of the MTZ 1221 tractor, we recommend that you read the video.
We remind you that subsequent repair and preventive measures must be performed after 1000 and 2000 hours of operation. All detailed information is described in
General technical indicators
Please note that these are general technical indicators of MTZ 1221, the characteristics of the state of components and assemblies will be given below.
After considering the technical characteristics common to the MTZ 1221 tractor, we will get acquainted with the power unit installed on it, find out the state of the brake system. Let's walk through the installed gearbox and electrical equipment. Video MTZ 1221 in the field, see its potential at the beginning of the article.
The device of the MTZ 1221 tractor
Let's take a closer look at the power unit, gearbox and electrical equipment of the MTZ 1221 tractor.
Power unit
The tractor is equipped with a turbocharged diesel power unit. The arrangement is in-line. The number of cylinders is six. The motor is characterized by low consumption of oil and diesel fuel. Diesel meets all the necessary requirements for exhaust gas emissions into the atmosphere. The unit is omnivorous and can run on domestic and imported fuel.
Transmission
MTZ 1221 has a 16/8 gearbox. Stepped version with constant mesh gears. Switching takes place using synchronizers. Closed clutch. The type is permanent. Two-disc system of the frictional principle of action.
Figure 1 - MTZ 1221 gearbox shift diagram.
Electrical equipment
Figure 2 - Assembly units of equipment, wiring diagram MTZ 1221.
The working scheme of MTZ 1221 includes:
- generator with a rated power of 12 kW;
- on-board network for consumers of electrical energy at 12 V;
- brake system.
MTZ 1221 devices, which we are considering, are equipped with disc service brakes. Principle of operation: load on the rear part with subsequent transfer of force through the FDA drive to the front wheels.
Disk parking brake, synchronized with service brakes. The system is considered reliable and balanced in terms of dimensions and weight of equipment, and is designed for additional loads of trailers.
Figure 3 - Scheme of electrical equipment MTZ 1221.
Trouble-shooting
Table 3 shows the classic failures of MTZ 1221.
Malfunction | Elimination |
MTZ 1221 front axle malfunction |
|
Insufficient traction of the front drive axle |
|
The drive clutch does not transmit torque: |
|
There is no oil pressure in the clutch booster. | Disassemble and rinse the distributor parts. |
Slipping of the drive clutch. | Check and adjust the pressure in the transmission hydraulic system (9 ... 10 kgf / cm2). Replace worn discs. |
Malfunctions in the electric control circuit of the FDA. | Identify and rectify faults. |
Insufficient value of the torque transmitted by the clutch due to oil leakage in the hydraulic system: | |
Worn rubber O-rings. | Replace rings. |
Worn piston rings and clutch drum. | Replace rings. |
Wear of the mating surfaces "cage - drum hub", "drum - piston". | Replace worn parts. |
Faults in turning on the MTZ1221 front axle, does not work in automatic mode |
|
The adjustment or failure of the switch of the automatic turn-on sensor is out of order. | Adjust the position of the switch or replace it. |
Hydraulics MTZ 1221 malfunction |
|
Hitch with load does not rise or its rise is slow |
|
The malfunction manifests itself as the oil warms up in the hydraulic system, the pump is faulty. | Check pump performance. If the efficiency is pump is less than 0.7, replace the pump. |
The malfunction manifests itself at any oil temperature - clogging of the unloading valve. | Remove the regulator-distributor, remove the bypass valve, flush it and the body in diesel fuel. |
Tractor MTZ 1221 price for new and used equipment
A complete set with complete and additional attachments will cost a potential buyer 2,155,000 rubles. MTZ 1221 price with a hydraulic travel reducer is more expensive.
Conclusion
Without exaggeration, we can say that the technique is reliable. MTZ 1221 in operation, watch video material. Multifunctionality, the ability to use additional equipment and different configuration options make MTZ 1221 in demand in many areas of business.