The second stage provides the ability to carry out all other transmissions.
Chassis The front wheels of the tractor had a semi-rigid suspension with a balancing axle. To detect and eliminate these defects, you need to drain the oil from the box, remove the cabin floor and the gearbox cover. The limits of the nominal working gap between the switching bars are 0.3 - 1.6 mm. It is also important to remember about safety precautions: it is necessary to obtain appropriate experience and undergo training before starting repair work. A creeper is present on agricultural vehicles that are necessary for soil cultivation. The rear axle with gearbox is equipped with individual housings on the lower area. The cross has four satellites. Dimensions and load capacity The design of the equipment belongs to the class of medium-sized tractors, this makes it possible to operate special equipment in large hangars. It is necessary to check the shift fork if play in the switch begins to appear, thanks to which the optimal mode is set. This will also eliminate the need for major repairs.
Behind the gear are the cams for the rear synchronous power take-off shaft. It is necessary to check the gaps of the shift pin and gearbox fork on the MTZ 80 if involuntary activation of speed modes is observed. Tractor MTZ 50 "Belarus".
Related article: Industrial support MTZ-82
MTZ-80/82 speed switching diagram
The MTZ 50 gearbox was a nine-speed dual-range, equipped with a reduction gearbox, which at the same time was a torque increaser. It is needed so that the torque increases while driving over rough terrain.
This makes it easier to climb particularly steep climbs. For example, they separate: Shafts with a protective casing.
This procedure is relevant if there are worn bearings.
At the same time, if after such an inspection, adjustment, and replacement of parts the grinding does not go away, there may be a problem with the brake control apparatus. About the design of the transfer case The unit consists of the following several components: Drive shaft.
Especially when you need to go through difficult turns. At different angular speed conditions, it ensures that continuous rotation is maintained.
The mechanism spring needs to be adjusted. The locking mechanism helps to realize all the capabilities of a four-wheel drive tractor. MTZ checkpoint. Part 3. Assembly part 2
More on the topic: Power take-off shaft MTZ-82
How to convert the MTZ differential lock to mechanical
In order to correctly convert the lock to work on a mechanical basis on the MTZ80, it is necessary to remove the sensor. which is attached to the power steering. In this case, you should first plug the seat. Next, the locking clutch is removed from the tractor. The locking shaft is being reworked. You can do it yourself.
How to make a part for rework:
- you can use a standard locking shaft;
- You can use the shaft to adjust the handbrake on the right side.
The shaft for adjusting the handbrake on the right side is easier to modify. Here it is necessary to cut off only one side of the spline part on the part. Next, you need to record it strictly in the required diameter, usually it is 33 mm. Typically, sharpening is carried out using lathe equipment. You don’t have to sharpen one of the outer parts on the shaft.
If you use a standard locking shaft, you will need to trim the outer part of the disk. A corresponding splined part should be welded onto it.
Gear shift diagram for tractors "Belarus" MT3-5J1, MTZ-5M, MT3-5JIC, MTZ-5MS and T-50V.
Gearbox The force from the motor to the drive wheel unit is supplied in the following stages: torque is supplied to the clutch; further transmitted through the gearbox coupling; after this the revolutions reach the rear axle.
If gear failures are detected, the gearbox is disassembled as shown in Fig.
Assembly is carried out in reverse order. You also need to pay attention to the clutch. The rear axle shaft is installed coaxially with respect to the drive shaft. For repairs, the driveshaft is disconnected when replacing the cuff. Sometimes such devices negatively affect the traction characteristics of tractors. It is also important to remember about safety precautions: it is necessary to obtain appropriate experience and undergo training before starting repair work.
Chassis The front wheels of the tractor had a semi-rigid suspension with a balancing axle. Firstly, if the tractor has a large free play of the gear shift lever, partial disengagement of the gears, and unnecessary disengagement of gears - it is worth paying attention to the friction surfaces of the shift forks, most likely there are signs of wear, slides, and grooves of the sliding carriages. This will also eliminate the need for major repairs.
Tractor MTZ-50: history of creation
General view of the MTZ, MTZ b tractor gearbox - relative arrangement of parts;
1 — driven gear of the reduction gearbox; 2 — input shaft cup; 3 - input shaft; 4, 6, 31, 34, 36, 50, 55, 62, 63, 65, 70, 73 - rings; 5, 9, 11, The crosspiece of the unit is fixed between the halves of the housing. The elasticity of the clamp springs may have been lost (Fig. The torque is sent directly to the transfer case using the drive shaft. Clutch disc. The device of the cardan drive and its types The cardan drive is needed so that the torque can be transferred from the transfer case to the front drive axle without problems. This occurs due to the fact that one of the wheels is not firmly connected to the soil. This will also eliminate the need for major repairs. The cross has four satellites. The transmission was equipped with a permanently closed, single-plate, dry clutch.
Worn parts should be replaced with similar original ones. This element interacts with the 3rd speed gear. Shafts can be divided into two categories based on functionality: With safety clutch. It is necessary to check their condition and replace damaged parts. Also, a reduction gearbox is attached to the splines of the input shaft through the driven gear. Gearbox design of the MTZ 80_82 tractor. MTZ repair
See also: MTZ power steering distributor
Cabin and control features
MTZ 50 was a hood-type tractor with a cabin located behind the engine.
This gave mechanics convenient access to the engine compartment, which made work much easier during routine maintenance and adding fluids to the system. The cabin was quite cramped, especially for tall tractor drivers. But in those days, designers did not yet know the concept of ergonomics in the production of special equipment, so they had to somehow adapt. But the small size of the cabin provided convenient access to all controls and monitoring instruments. The seat was installed on movable springs, which reacted to all vibrations emanating from unevenness on the road, so that the driver would not perceive them so painfully. The level of sound insulation with doors and windows closed was quite good. But the rubber gaskets between the opening elements wore out quite quickly due to frequent friction and work in unfavorable conditions.
Therefore, after a few years, a lot of road dust got into the cabin, so tractor drivers were forced to deal with this problem on their own. There was no trace of air conditioning then, so there was nothing to escape in the summer heat. And the cabin heating was ineffective.
Buying an MTZ 50 in good condition today is not so easy. Most of the models offered were produced over 30 years ago and are in need of major overhaul. So finding a decent copy will take some time.
The price of MTZ 50 in working condition will be approximately 250-300 thousand rubles. Moreover, you can find offers of equipment immediately with attachments. There are also more expensive models on which the previous owners installed new power units, as a result of which their power and performance increased significantly.
MTZ-80/82 speed switching diagram
Gear teeth can be diagnosed with the gearbox covers removed and the transfer case removed.
Flanges are connected to shafts using splines. Also, the system includes an intermediate shaft.
You can add a speed reducer to your transmission if you need to drive at lower speeds than the standard transmission allows.
In order to reduce the speed limit on this vehicle, the manufacturer installed a speed reducer on the gearbox. At the same time, one of the most important elements that ensures the functionality of the machine is the gearbox. It is a gearbox equipped with gears. Sealed bearings do not need to be lubricated during operation.
We recommend: Clutch adjustment MTZ-1221
Worn parts should be replaced with similar original ones. The cardan flange must be removed.
In particular, it is not recommended to pull the lever when moving it from one mode to another. They are also performed during joint processing of parts. They may jam or be completely destroyed. The front wheel track was also adjustable, but in steps of mm. You also need to pay attention to the clutch.
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Gear teeth can be diagnosed with the gearbox covers removed and the transfer case removed. The optimal gap is 2.2 millimeters. The flange receives all torque indicators from the rear propeller shaft.
Next, use a crowbar to turn and check all accessible shafts, exerting pressure on them in the axial and radial directions. These consumables must be replaced. The rear axle was equipped with a differential that could lock the wheels. In some cases, the cause of knocking noises may lie in the fact that there is a breakdown of the gear teeth. The main reason for these symptoms is wear and tear of the gearbox spare parts. MTZ PTO switching 540 and 1000 rpm
Useful tips
The hydraulic locking system is used for field work and driving on snowy roads. It is recommended to use a blocker when plowing soil on slopes, since the system ensures that a straight path of movement is maintained.
When driving on paved roads, differential locking causes increased tire wear, so the device should be disabled.
Using a locked differential on a slippery road is allowed at a speed of no more than 10 km/h (due to the danger of the car skidding).
General device
The power plant is diesel. The engine is 4-stroke, 4-cylinder, with a design power of 82 horsepower. Engines are also produced at Minsk Tractor Plant. In Minsk engines, the combustion chamber made in the piston is divided in half. Tractor models with a pre-heater are also available on the market. The total engine volume is 4.75 liters, the speed reaches 22,000 rpm.
The main brakes and parking brakes are on discs, dry. Pneumatic brake drive for trailers. Locks with car brakes. Electric current for the tractor is generated by a 700 W generator set with a voltage of 14 V. A starting system with a voltage of 24 V can be supplied upon request. The driver's workplace is comfortable, the cabin is isolated from noise, and good visibility is provided.
All tractors are equipped with a mechanical transmission. The 9-speed MTZ 82 is equipped with a reduction gearbox and has 22 gears - a total of 18 forward, four rear gears.
The rear wheels are placed on a rigid suspension and mounted on a semi-rigid one. Rubber for MTZ-82 is also supplied by Belarusian manufacturers. If the farmer is put off by the price, there is always a large selection on the secondary market.
General technical specifications
The universal wheeled tractor has the following technical characteristics, which ensure the performance of agricultural and other related work:
- Traction class – 1.4
- Weight – 3.60 t.
- Length – 3.85 m.
- Height – 2.78 m.
- Width – 1.97 m.
- Base – 2.37m.
- Ground clearance – 0.47 m.
- The highest speed is 33 km/h.
- Hydraulic system volume – 21.0 l.
- Fuel tank volume – 130 l.
- Track (variable) – from 1.2 to 2.1 m.
- Turning radius – 2.5 m.
