MTZ 50 DIY repair

In detail: MTZ 50 DIY repair from a real master for the site my.housecope.com.

The MTZ-50 and MTZ-52 tractors are universal row-crop machines that belong to the 1.4 traction class. These tractors were produced from 1962 to 1985 by the Minsk Tractor Plant. Since 1985 it has been produced in limited quantities only for export to other countries. Therefore, MTZ-50 repair is available only according to old books. After the collapse of the Soviet Union, the production of MTZ-50 and 52 tractors was resumed under the Belarus-500 brand, after some modernization, which did not greatly affect the repair of MTZ-50.

The MTZ-50 tractor is one of the representatives of wheeled equipment, which is used for a wide range of agricultural activities. It can be used for a variety of cultivated purposes: from sowing and fertilizing to harvesting, various kinds of watering and processing activities. For a long period it was used in construction, industrial complex and the field of utilities. Due to the simplicity of design, ease of operation and repair, MTZ 50 is widely in demand. An equally important factor is unpretentiousness to fuel. A clear arrangement serves as a guarantee of easy repair of MTZ 50 and long years of service.

Due to its versatility and versatility, it can work in conjunction with a large number of attachments. For this reason, it often replaces a bulldozer, excavator or loader. Over the history of the existence of this model, more than a million copies have been released.

It has been produced at the Minsk plant (that's why it is sometimes called by the name "Belarus") for more than fifty years since the beginning of the 1960s. Fifteen years later, the first deliveries to Russia began. Since then, production has stopped several times, due to which the export of the unit took place in limited quantities. In the 90s it appeared on sale again under the name “Belarus-500”. But there are not very many MTZ-50 repair specialists.

Video (click to play).

It has a standard device, which is inherent in representatives of this class, which makes it easier to remont MTZ-50. Two sets of wheels: guides - with a small diameter and leading with a large one. Front-wheel drive. In the ten years since its release, the design and appearance have undergone a number of changes. Among the first are the rectangular grille. The later ones are the shape of the hood and the enlarged cockpit.

A new model with one front wheel was created with the Tashkent plant for the production of tractor equipment. A distinctive feature of this model was a high clearance rate.
In Tbilisi, a steeply sloping modification was released, which received, in addition to the name, the index K.
For specialized work in vineyards, at different times, T-50 models with an index B were created. For rice fields - MTZ-50R.
Another copy of the MTZ-52 with a girder front axle instead of a portal axle and significantly smaller rear wheels had a low ground clearance and received the specification of N.

An additional version was also created on its basis, which has four driving wheels and a front axle with drives connected to it. In view of this, it has significantly higher traction and grip properties and better cross-country ability. The main purpose of such a device is to interact with trailed, half-mounted and fully agricultural implements and machines.

It is worth noting that such a tractor has a significant clearance under the arms and a track adjustable over a wide range without the help of steps. This property allows you to process not only low-stemmed (for example, beets), but also high-stemmed crops (sunflower and corn). It can carry out a cycle of cultivation and harvesting of sugar beets using connected three-row combines.

Tractors "Belarus" MTZ-50, 50L, 52, 52L (repair of MTZ 50)

Diesel engines D-50 and D-50L (repair of MTZ 50)

The manual contains a summary of the design features of the D-5O and D-50L diesel engines, which can be useful when repairing the MTZ-50. The basic operating rules of engines and their technical maintenance are described. The authors have compiled a list of possible operational malfunctions and ways to eliminate them.

Many farmers ask how the MTZ cabin is made with their own hands. The arrangement of cabins is improving every year, including the MTZ-82 Belarus tractor. The Minsk Tractor Works designs the cabins of machines to improve the working conditions of the tractor driver.

However, no one is immune from breakdowns, so you will have to repair the cab, perhaps with your own hands. Repairing the cab, altering it or reworking it with the help of qualified workers will not be cheap, and it is quite possible to do the work yourself. In addition, on cabless tractors, you can also make a cab with your own hands. A home-made cab for a tractor is convenient, cheap and reliable.

What you need to know about the installation of a home-made cab MTZ-82, MTZ-50 and T-40?

The most important thing to pay attention to when deciding to install a home-made cab at MTZ is the quality of the materials. Design changes can be made to make it even cheaper. First of all, you need to decide what material will be used for the main part of the frame.

So, making the project of the cab at MTZ self-made, one can take into account that the glass in the lower part of the door is an optional element, and it is quite possible to refuse it. This will make the structure more durable, as there is no risk of the glass breaking.

First you need to thoroughly prepare for work, namely:

Arrange a spacious work space.
Prepare the necessary materials: steel sheets (1.2-2 mm), square pipes, glass (front, rear and side), screwdriver, tools for carpentry and joinery, welding machine.
Prepare consumable (fastening) materials: bolts, screws, nuts.

Let's consider how the MTZ-50 cabin is created with our own hands. It is done in the same way for any other tractor.

The most common design mistakes are miscalculations when planning the filling of the booth.

So, not everyone takes into account that the floor in the MTZ-82 cab should not be laid evenly, but in steps. The first stage is needed in order to move along it; it is also possible to provide a niche for the battery in it (in the event that the MTZ-82 cabin implies the use of a starter). On the second step there will be a platform for the driver's seat. The third step is needed in order to play the role of a kind of armrest. A passenger can also sit on this step, since the width of the ledge will allow it to do so.

It is also worth considering that you first need to purchase a car seat, and only then plan the height of the ceiling. The chair should not be too high: in this case, it will interfere with assessing the situation from the back, if necessary. When all the nuances are taken into account, you can begin to design a homemade cab for MTZ-80, 50 or another tractor.

First, a drawing and a work flow diagram are created. First of all, you need to weld the front of the cab, taking into account the tractor windshield. To do this, it is necessary to make a glass contour from a sheet of plywood with a margin for the gasket. The same must be done with the rear wall, only after that take measurements of the side parts of the tractor and its doors. The side parts must be equipped with opening glasses, which can be purchased from specialized stores. This will make the work on the tractor more comfortable, it will be possible to ventilate the room.

After measurements, you can proceed to designing a frame from a bar. Square tubes should be exposed along its outer contour, after which the parts are spot welded.After specifying the measurements, it is necessary to proceed to welding the glass openings. Welding must take place on a flat surface.

Before facing all parts of the tractor, you need to decide on the height: the ceiling must be at least 20 cm higher than the driver. After all the calculations, the height of the racks is determined, on which the main load will be distributed. Only after all these procedures can you begin to make a tractor roof from a steel sheet (2 mm) and a tube (diameter 100 mm). The tube is cut lengthwise and a steel sheet is welded to it, which will play the role of a roof in the future. After that, the entire cabin is welded and the mirrors are installed.

After the welding of the parts, smaller work takes place, for example, the installation of locks in the doors. If the lock is easy to install from the outside, then the mechanism located inside requires improvement. On the inside of the door, where the lock is located, you need to weld or screw on a latch with a spring, and then attach it to the lock.

The dashboard can be borrowed from a tractor, connected to wires and get a ready-made remote control located on a metal case. The same should be done with the stove, which is needed in winter. 2 nozzles are removed from the stove: one goes to the windshield, and the other will blow out air. If the cabin is sealed, then it will be necessary to ventilate it from time to time to remove excess moisture.

Internal finishing is made of fiberboard. The necessary parts are cut out of the fiberboard sheet, which are fastened with self-tapping screws. In the future, the frame can be covered with fabric (use foam rubber as a filler). Sometimes, instead of fabric, you should use leatherette, which will be easier to wash.

If the cab requires repair, then it should be borne in mind that for alteration it is usually removed from the wheel frame. It is quite difficult to remove the cab, but sometimes it is simply necessary. Often during the alteration, the installation of the YuMZ cab at the MTZ is practiced. This is a good option, given the fact that fastenings in tractors are practically the same.

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Tell me how to adjust the gearing of the vertical shaft with the horizontal, final drives in the MTZ-82 FDA.
And is the kingpin pipe of the old and new designs interchangeable? DIY MTZ-80 (82) repair https://my.housecope.com/wp-content/uploads/ext/967/node/51831. Please continue communication here. The old theme will be archived

Guys tell me what to do so that they could not start the tractor. The thing is, as I go on a day off, they take my tractor, because they have their own. I’m tired of swearing and the engineer says don’t regret, damn, but I’m sorry that one or the other will be broken off, it came to a fight once. fights. it’s worth the launcher, about the launcher not to offer, he did and magnetically blocked and blocked the air, what can be done like this so that the diesel engine is not started, but do not disassemble anything so that it comes, cleaned and started,

tired of swearing and the engineer says do not regret

Engineer nah. Let him twist the nuts at least once. Image - MTZ 50 DIY repair

tell me where is this valve on the pump,

the valve on the high-pressure fuel pump is installed - the return flow from the high-pressure fuel pump is drained on old tractors, the tube went to the pump to a double fitting, on the new one from this valve, the return flow goes directly to the tank fitting, turnkey 19, and there is a cork 14 in it. under it there is a spring and a ball. there will be no pressure in the filters, the tractor will not start, no matter how much you pump it, but over time they will bite out and from another tractor or from Kamaz they will screw it up, it's the same there.

unscrew the large plug on the pumping pump (the key is probably 32), take out the spring and twist it back, this will be the fastest. I tried with the valve, but the tractor still started up, maybe under load and wouldn’t be lucky, but I didn’t try

the eyes are afraid and the hands are doing

he is like they have no time, and they themselves sit for half a day at the stern of the warehouse, so it's a shame for me that I'm wiping their asses.

Here, the root cause of evil. Anti-theft to the light bulb, in revenge, the workers can do this to you.

Who will fuck later ?, but you. Half measures cannot solve the problem.

Made a light bulb as prompted. Hooray! Working! Thanks!

Guys who will tell you what can be done with a plastic tank lid so that it does not leak, or can someone redo it share

Image - MTZ 50 DIY repair

Only the one who does nothing is not mistaken

Guys who will tell you what can be done with a plastic tank lid so that it does not leak, or can someone redo it share

Did you try to put the rubber gasket into the cork? Image - MTZ 50 DIY repair

I don’t know this option will suit you, I have a metal tank, I didn’t like this narrow neck and I picked up the thread so that it screwed onto the neck and welded this thread to the neck of the GA Z53, and then screwed it onto the neck of the tractor.
If you are interested in the idea, contact me, I will provide a photo.

Guys who will tell you what can be done with a plastic tank lid so that it does not leak, or can someone redo it share

Hi everybody! please tell me who knows or had to. can antifreeze be poured into MTZ? since there is no expansion barrel from the factory. I had a dispute with my superiors. that you can fill in antifreeze and without an expansion tank, but it DOESN'T you just need to put an expansion tank. I want to know who is right. tell.

Since 2003 I have been using antifreeze, but I haven’t heard about the expansion tank,

the eyes are afraid and the hands are doing

in principle, antifreeze has a large expansion when heated, so there are two outputs - put an expander (you can from a bug, an Oise) or keep the level lower in the radiator - in practice, I get that the level is two centimeters below the level of the tubes. if I fill it above the tubes in the radiator (half a tank) then throws out a little antifreeze to a level of -1-2 cm. and then this level does not go down. I add a liter and a half-antifreeze comes out and it will be thrown out a day.

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Tell me how to adjust the gearing of the vertical shaft with the horizontal, final drives in the MTZ-82 FDA.
And is the kingpin pipe of the old and new designs interchangeable?

adjustable with shims.
Skoko, I know the kingpin pipe of the new model differs in that it has a thicker platform for the bolts with which it is attached. I think they are interchangeable.
On my own I changed a vertical shaft with bearings, put a new sample and everything is fine, although it is longer than the old one.

What is the tightening torque of the vertical shaft bearings, what is the clearance in the gears? When will the pipe change the tractor sideways not stand up?

The bearing is tightened to the stop, and then released by one eighth of a turn and locked.
I will look for a gap in reference books.
In general, if you do side-by-side, then you need to do it symmetrically, and so the front axle wobbles, in principle, it will not be noticeable.

Good day. Can you tell me whether it is possible to replace the PTO drive shaft and ring gear without removing the gearbox on the MTZ tractor?

Thank you very much Igorek! But nevertheless you think you will change the other side! And if your first year is 82, tell us about the weak points, he was just 1 year old for me (before that he worked at the T-70, of course he is good, but the asphalt around now stands as a dead weight).

Personally, I would go through both onboard, they work the same way, so that everything is symmetrical and even.
I screwed up my front axle myself out of inexperience: in the early years I did not check the level in the upper bevel pair of the front axle, this is on the left and right above the final drives.
Here in my spring harrowing plow, when the bridge is turned on all the time, the right conical pair is jammed, I had to cut the axle in half, remove the differential, the right axle shaft and the vertical shaft, then I assembled it and continued to work. After the sowing, I bought the parts and assembled them, everything works.
When there is a lot of transport work and when harvesting hay, I throw off the cardan to the front axle, otherwise when the rolls are thick as they wind. and it's off anyway.
From autumn on plowing and winter I put the PVM cardan.
In general, I have it turned off almost all the time, I turn it on when I fall through in the spring and I can get out myself, hopefully I’m not working alone in the field.
Every spring I change the engine oil and wash the filters, including the fuel filters.
And so at the moment my weak point is the brakes, one left wheel brakes, the right side has ceased.
Maybe someone will tell you about brake repair?

Universal row-crop tractors "Belarus" MTZ-80, MTZ-82 are among the best domestic tractors. Every year their design is being improved, quality is improving, efficiency, reliability and maintainability are increasing. They are widely recognized by machine operators.

At the same time, tractor downtime is still long due to failures and malfunctions, the occurrence of which is often due to the low culture of machine operation, the unsatisfactory quality of repairs.

The main reference material when carrying out repairs for tractor drivers and mechanics-repairmen is the instruction manual for the MTZ-80, MTZ-82 tractors, published by the factories and the supplier. Despite the informativeness of the instructions, the data contained in it on the design, repair, etc. and replaceable tools, pullers, fixtures, instrumentation, on the basic rules and sequence of disassembly and assembly of the tractor are insufficient. As a result, even experienced machine operators often disassemble the tractor and its components at random. Due to the lack of data on fault detection, many parts fit for work are replaced, which leads to an increase in the cost of repair.

This manual can provide practical assistance to machine operators, mechanics-repairmen of workshops of collective and state farms, tenants. It contains information about the causes of malfunctions and methods of their elimination, shows the correct techniques for performing disassembly and assembly and adjustment work during the current repair of the MTZ-80, MTZ-82 tractors.

We should take into account that manufacturers are constantly improving products in order to increase their reliability and better suitability for service. Therefore, the design of some of the parts shown in the figures may differ from the design of parts of a real tractor, which is at the consumers' disposal.

The manual was prepared by the staff of GOSNITI F. N. Pukhovitsky and S. V. Petrov (compilers), O. M. Kopylov, E. Zh. Sapozhnikov.

The manual contains a brief description and design features of the Belarus MTZ-50, MTZ-50L, MTZ-52, MTZ-52L tractors. In addition, it sets out the basic rules for the operation and maintenance of machines. The manual is intended for tractor drivers and foremen, as well as other persons whose work is related to the operation of Belarus tractors of the specified models.

The manual was compiled by a group of engineers from the department of the chief designer of the Minsk Orders of Lenin and the October Revolution of the Tractor Plant.

Wheeled tractors "Belarus" MTZ-50, MTZ-50L, MTZ-52, MTZ-52L are universal agricultural tractors of 1.4 t class. They are equipped with diesel engines D-50 and D-50L with electric starting and starting engine. Tractors are made according to the scheme normal for agricultural tractors and have a semi-frame structure. The semi-frame is made of two channels connected by a cast front bar. An engine is installed in the front part of the frame, the rear part of which is rigidly fastened to the clutch housing through a sheet.At the front, the engine is fixed to the front beam of the semi-frame by means of a hinged support.

The Belarus MTZ-52 tractor differs from the MTZ-50 tractor in the presence of a drive to all four wheels, which provides increased cross-country ability while maintaining versatility. The transmission to the front axle contains a free-wheeling clutch, which automatically engages the front wheel drive only when the rear wheels slip reaches the design value. A limited slip differential is installed in the front axle.

Tractor T-38M. Tracked universal row-crop tractor of 2 t% class is intended mainly for mechanization of cultivation and harvesting of sugar beets.

Four-cylinder water-cooled engine, unified with the MTZ-5L tractor engine.

The clutch is dry, single-plate, non-permanently closed type, with manual control.

The gearbox is five-speed. The box casing is attached to the rear axle housing and together with it forms the skeleton of the power train. The box has a lock interlocked with the clutch engaging mechanism. The tractor is controlled by multi-disc clutches and band swing brakes; separate drive. The final drives are two-stage, formed by cylindrical gears, located at the driving wheels of the tractor. The axle of the driving wheels is split *.

The frame is semi-framed. Suspension torsion-balancer semi-rigid. The swing axis of the bogies is located in front of the driving wheels.

Ridge-type caterpillar. The track idlers are equipped with elastic tensioners.

Pendulum type hitch. Power take-off shaft with dependent drive. The drive pulley is mounted on the PTO gearbox housing.

Tractor T-50V - caterpillar vineyard class 2 tons.

The tractor is equipped with a four-cylinder ASMD-7V diesel engine, a dry two-disk clutch, a coupling with plug-in rubber sectors. Three-way gearbox with a reducer, bevel central gear, rear axle with couplings and swing brakes, single-stage cylindrical final drives.

The caterpillar trolleys are rigid, the frame is suspended from them with the help of three torsion springs. The caterpillar chain consists of cast links with replaceable bushings and pins, pinned engagement, tensioner with spring shock-absorbing device.

The PTO drive is semi-independent, the number of revolutions is 523 per minute.

The hydraulic system is separately modular with a gear pump, a two-spool valve and a hitch.

The cabin is quick-detachable, light type, made of waterproof fabric.

The DT-54A tractor is caterpillar, general purpose, with a water-cooled D-54A diesel engine.

The clutch is permanently closed, double-disc. The connecting drive has two universal joints with rubber inserts.

The gearbox is five-speed. The oil bath is shared with the rear axle. The box is equipped with a lock interlocked with the clutch. The central transmission is conical.

The tractor is driven by multi-disc dry clutches and swing band brakes. The control drive is separate.

Final drives are cylindrical, spur. The suspension is elastic, on four bogies with twisted cylindrical springs.

The caterpillar consists of cast links, the gearing is pinned. The tensioning device of the tracks is crank, elastic.

The tractor is equipped with a hitch. The tractor is supplied with a PTO shaft and a drive pulley as additional equipment.

Tractor hitch with two-point and three-point adjustments.

The tractor can work with a five-body trailed hydraulic plow, a four-body mounted plow, a universal loader, cultivators, seeders, harrows and other implements.

Tractor "Belarus" MTZ-5L. Universal row-crop wheeled tractor of 1.4 t class. D-40L four-cylinder water-cooled engine with a starting engine.Friction clutch double permanently closed type with semi-independent drive of the PTO shaft. Box […]

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V In the process of operation of the Belarus tractor (MTZ-50, MTZ-50L, MTZ-52, MTZ-52L tractors) without a hydraulic increase in the coupling weight, the GSV handle should be set to the “GSV off” position. One lever of the rear hydraulic cylinder spool is used to control the attachment system.

PWhen working with mounted machines, which are equipped with support wheels, it is required to use only the positions of the handles "raising" and "lowering" of the implement under its own weight, that is, the "floating position".

V When working with mounted tillage implements, setting the handle to the forced lowering position is prohibited.

ANDThe use of the forced lowering position is allowed only when controlling the outboard cylinders, which are mounted on the machine and are used to adjust the position of the working devices (header, reel and others) of harvesting and other machines.

PWhen working with mounted tillage implements, setting the spool to the neutral position is not allowed, because the required tillage depth will not be provided.

PIn addition to this, the overloads arising in the neutral position of the spool lead to the failure of oil lines, hoses, as well as parts of the tractor and implement attachment mechanism.

Tractors MTZ-80 and MTZ-82 - General information and repair (textbook)

A practical guide for the current repair of tractors MTZ-80, MTZ-82

Tractor Belarus MTZ 80, MTZ 82 - technical description and operating instructions

Diesel engines D-50 and D-50L - operating rules and technical maintenance

Tractors Belarus MTZ-50, MTZ-50L, MTZ-52, MTZ-52L

Manual for maintenance and repair of tractors Belarus MTZ 500, MTZ 800, MTZ 900

Tractors MTZ 100 and MTZ 102 - tutorial

Tractors Belarus MTZ-80, MTZ-80L, MTZ-82, MTZ-82L (1973)

Tractors Belarus MTZ 80, MTZ 82 - tutorial

Tractors Belarus MTZ 80, MTZ 82 and their modifications

Manual for operators who operate diesel engines D130 and D130T

Use manual and description for the D-120 engine

Gerasimov A.D. etc. Tractor T-25 (device and operation)

Cars and tractors Mechanical engineering 1988

V.A. Rodichev device of agricultural tractors MTZ-80 (MTZ-82) and DT-75D (DT-75ML)

Manual operation procedure for single-cylinder diesel tractor DT-20

Those. description and operating instructions - T-40M, T-40AM, T-40AHM

Operation manual tractor "Belarus" 80X, 80X.1, 100X (2012)

Image - MTZ 50 DIY repair

The POM synchronous drive operates using an intermediate shaft and a gear, which is moved by a lever to the gearbox shaft; this type of connection the rotation is transmitted through the driven shaft, the amplitude of which depends on the rotational speed of the driving wheel system of the tractor - the higher the speed indicator of the machine, the faster the power take-off shaft rotates.
The Belarus power take-off shaft consists of these components: a two-speed gearbox, a changeover switch, and a planetary-type gearbox, which is responsible for the process of switching the drive type and for changing the torque amplitude.

Its most basic part is a carrier, a sun gear is attached to its hub, and there are bushings in it, 3 satellites are attached to them. With the help of this fastening, the carrier engages with the PTO; there is a shank at the end of the shaft, with the help of it, the power take-off process takes place.
The tractor driver has a functional handle in the cab, with the help of which the switching takes place: turning the handle counterclockwise turns on the dependent position, and clockwise turns on the independent position, and the shaft is turned off by setting the handle in the middle position.
The main nuances of operating a VOM.
1. It is better to connect an independent drive when the engine is running at the lowest speed.
2. If you plan to work where you do not need to use the power take-off shaft, you need to switch the gearbox with an independent drive to reduced speed, and fix the dependent gearbox to the neutral position.
3. The drive of the dependent type is activated only when the MTZ 50 is completely stopped, after turning on the high-speed mode, when the clutch is smoothly pressed, and also so that the diesel engine is started at the same time.

The rear power take-off shaft on MTZ 50 tractors is most popular, since additional working equipment is most often installed at the rear of the tractor.

Image - MTZ 50 DIY repair

These were the best tractors of their time in terms of reliability. Some have survived to our times in personal subsidiary and farm plots, as well as in small businesses.

Most of the spare parts for "Belarus" MTZ-50, MTZ-50L, MTZ-52, MTZ-52L fit the MTZ-80 and MTZ-82 tractors, due to this they survived. Tractors belong to the class 2 tf., Can be operated with almost all modern agricultural machines.

The operating manual describes in great detail the device, adjustments and maintenance of the tractor, as well as the procedure for disassembly and assembly work during the repair of individual components and assemblies. The book can be useful to the owners of this technique, as well as for independent study of tractors, since the device is given in it in great detail.

The channel already has a video about the repair of the MTZ generator, I decided to shoot another one. As always, I tried to think hard.

I will tell you about the way to restore the power steering of the YuMZ (MTZ) tractor. Power steering after repair (revision).

Do not tell me what the problem is, in order to get the Owl you need to run with him from all the slides, otherwise it does not work.

Alexander (Zuleica) why doesn't the owl turn on when it's cold ?? until it buzzes straight down the throat. and then, as it warms up, it starts to start, and then cool down again 25. And another question is how to properly install the piston with a window to the carburetor or to the exit, otherwise when you start the air comes out into the clamp, and the fuel is thrown out through the hot air. help if you know anything. ))))

Danil (Pulaha) I also did not start before. Owl I changed the suspension bracket and put a new candle now it's easy to start !!

Sergey (Arkhip) Alexander, it won't start, perhaps because of lk or carb. And on the piston, the arrow should look forward.

Alexander (Zuleica) Alexander, the piston should be placed with the window towards the lux

Kostya (Roscoe) Alexander, there may be many reasons, but I think that you have a khan's rings, there is not enough compression for it to suck in fuel, and when it heats up, the metal expands, and it starts normally, it was like this on a Tula engine, maybe from - for a lean mixture, but I think that the matter is in the piston, but if you did not put the piston correctly (with a window to the exhaust, then it would not even start)

Alexander (Zuleica) Kostya, thanks of course, but 4 years have passed already) the owl has already been sold ahahahahh

Kostya (Roscoe) Alexander, the band is just dead, did you? What was the matter?

Alexander (Zuleica) Kostya, the piston was deployed to mine and that's all) I don't remember exactly)

Seryoga (Lucek) There may be a hundred guys. It won't start on a cold one. 01. You suck up the dergaesh, lift the enricher. Unscrew the candle, it’s dry, it’s poked under the head, and it runs for more than 15 minutes. new.Thanks in advance

Tags: Why MTZ 50 tractor does not start well in cold weather

Starts ONLY WHEN THE FUEL SUPPLY IS FULLY ON, even if it is cold or hot, even with pumping fuel, even without pumping fuel, the pumping pump is new, the valve is also new! As a manager, it works perfectly; there is neither black nor blue. Tatyana does not take oil, the fuel consumption is normal!

Victor under the cover of the fuel pump regulator there is a regulator. a screw with a lock nut that rests on the lever of the fuel pump rack. screw it one turn

Andrey What is important is what happens when the engine starts. If white smoke comes out of the muffler from the very beginning of scrolling, this may be an indicator of decreased engine compression, or insufficient clearance in the rocker arms. It also happens when the injection advance angle gets lost. Unlikely, though. There is no advance clutch at MTZ, and the injection pump drive is fixed rigidly with two bolts. If the smoke is darker, and appears just before the engine begins to seize, the discharge valves that are above the plungers may have been extinguished. Or maybe everything is simpler? Grabbed a shitty diesel fuel, and the sprayers, or even the plunger, were prepared for a replacement? In general, the operation of atomizers can be determined with sufficient accuracy by lightly touching the high pressure tubing with your fingertips. When the nozzle works well, the fingers perceive a slightly noticeable but clear blow during the cut-off. The pulse beats in it, as if it were pulling with a small current. If the tube is dead, there is no good spray.

Alina if the engine on MTZ does not start well. that in the cold or in the heat is the same, do you drive for a long time? this means that the fuel pump needs to be repaired. or rather, the replacement of plunger pairs. also check the pressure in the nozzles. and the operation of the injection pump, can be checked on the spot when the engine is running. just take the key19, and unscrew the tubes that feed the nozzles Eugene. if the injection pump works, then it will sprinkle, for one and the injectors are checked. when you unscrew the sound should change, and if there is no change, change the atomizer ,,

Oleg the tractor starts up on a cold engine very badly, even when the air is plugged with a starter, you have to turn it for 2-3 minutes, pumping does not help on a hot one, the nozzles are excellent and the pump only after adjustment tell me what to do

Tractors MTZ - 80 have been produced since the seventies of the last century and, probably, there is no such collective or private farm, wherever it is used. During this time, many MTS have repeatedly and successfully carried out the repair of these machines, and have accumulated a lot of experience in this area.... Private owners of MTZ-80 tractors have to make a choice: give the car for repair to a specialized repair company, which are now in sufficient quantity, or decide to repair the MTZ - 80 tractor with your own hands. Specialists will, of course, carry out any repairs, and with the required quality, but they have to pay for the work, which is not always feasible.

It is good if there is a friend tractor repair specialist who could help with advice or participation.And if this is not possible, then you can rely only on technical literature, special sites on the Internet, videos on repair topics and on your own hands.

Any tractor owner MTZ - 80 during the time of working on it and compulsory maintenance, I learned a lot, figured out the principles of the mechanisms, learned their advantages and disadvantages, eliminated minor problems and adjusted one or another unit. Technical literature and video sites will help in the rest: how to disassemble a faulty mechanism, how to discard worn parts, how to assemble a device after repair and make the necessary adjustments. All data for numerous adjustments is in the MTZ - 80 tractor operating manual and they only need to be applied correctly.

For example, consider the repair of an engine that has strange knocks in the crankcase area. In general, engine knocks can occur for various reasons, and in order to determine what these knocks are, experience is needed. Experience only comes with time. It can be the knock of worn out pistons, piston pins, valves, just from detonation. Crankshaft knocking may occur due to wear on the main bearings.
First you need to check the condition of the crankshaft main bearings. We loosen the front end of the shaft from the belt and gears and try to swing it up and down with a crowbar. If there is a movement of the shaft, disassembly is needed.

To roll out the tractor, you need a suitable level platform and movable and fixed supports. If all this is not there, then you can adapt the hoist for removing the engine. The hoist must be fastened to the beam, and the tractor must be rolled under the hoist. Free the engine from all pipes, electrical cables and steering shaft. The engine itself is fastened with cables and freed from attachment to the front half-frame. Drain oil from engine crankcase.
The rolling is carried out at the joint with the clutch mechanism.
Thoroughly wash the removed engine and place it on the site for disassembly. The room must be clean, light and not dusty.
Remove the cylinder head and oil pan from the engine. Unfasten connecting rods and remove from cylinders. Remove the crankshaft support covers and remove it from the supports. Crankshaft and connecting rod bearing caps should be marked. Rinse all disassembled parts thoroughly and prepare for measurements.

Measure the main and connecting rod journals of the crankshaft. If shaft wear is natural, then its journals can be ground and installed with repair liners. If tarnishing flowers are visible on any neck, and even more so if the liners are stuck to the shaft neck and rotated with it, then such a shaft will not be reworked, since it can be deformed due to heating. It needs a thorough check for the beating of the necks and ends. In this case, it is best to install a new crankshaft. The shaft is purchased complete with bushings corresponding to the diameters of the shaft journals.

Clean the shaft of grease, rinse and blow out all lubrication channels with compressed air. Lubricate all liners and main journals of the crankshaft before assembly. Place the shaft, close the covers. Tighten the nuts first with a preliminary tightening, check and adjust the axial play to 0.2 mm, then tighten the screws finally, starting with the middle journals. After the final tightening of the screws, the crankshaft should rotate by hand, but without any play.

To check the bearings, connecting rods with new bushings (without pistons) are installed on their crankshaft journals and the bearing caps are tightened. The connecting rods should, under their own weight, rotate around the neck, there should be no backlashes. For those connecting rods that do not turn, you can scrape the liner a little or put a steel foil 0.05mm thick into the bearing joint. After checking, the connecting rods must be disassembled.

If possible, the condition of the piston group can be checked at the same time. If the replacement of the piston group has not been made for a long time, then it's time to do it.
In this group, they usually check the piston pins, the pistons themselves, the bushing of the upper connecting rod head. The cylinder liners also need to be checked.
The diameter of the sleeve is checked with an indicator bore gauge in the upper part in two perpendicular planes for the presence of ellipseness. Then check the diameter of the piston, also, taking into account the presence of an ellipse. The gap in the mating of these parts should be within 0.2 - 0.25 mm. If the gap is greater than this value, then the issue of replacing the liners must be resolved. If liner wear is small, then new pistons can be installed in them.

Piston rings are measured - the gap in the joint of the ring installed in the unworn upper edge of the liner should be no more than 0.4 mm. With more wear, the rings are replaced with new ones.
After completing all the parts, the piston group is assembled. The compression rings must be installed according to the label. The connecting rod caps must not be depersonalized. Insert pistons with connecting rods into the cylinders by compressing the rings with a special sleeve. Install all connecting rods on the crankshaft, check its rotation by hand. Checking the cylinder head remains.
The head is replaced if:
- there are cracks anywhere on the head;
- deviation from the flatness of the joint surface of the head with the block is more than 0.15 mm;
- the valve seat is cracked;
- sinking of the valve disc in relation to the plane of more than 1.5 mm.

If the head is to be repaired, then it must be sent to a mechanical workshop for grinding the plane, replacing the guide bushings, finalizing the working chamfers of the valve holes, checking the valves, and so on.
If everything is in order with the head, then after replacing the piston group, it is placed on the cylinder block and the screws are tightened according to the numbers indicated in the documentation.
Image - MTZ 50 DIY repair

It remains to put the MTZ - 80 engine in its place, adjust the valves, assemble all the fittings completely and start up the motor.
The principle of repairing all mechanisms is the same. It is only necessary to take into account that it is undesirable to once again disassemble the running-in mechanisms, to separate the complete parts.
On the other hand, making repairs on your own, you can better understand the technique and, accordingly, treat it more carefully and accurately.
When starting to repair MTZ - 80, you need to clearly assess your strength, the ability to seek advice from specialists in case of incomprehensible situations. It is necessary to decide in advance the issue of purchasing spare parts, because it is not always possible to plan enough of them. And to have on hand special literature and thematic videos, since only there it will be possible to find all the values recommended for adjustments.

You can see additional materials on the repair of domestically produced tractors by the link

Video (click to play).

Tractors Belarus MTZ-80, MTZ-80L, MTZ-82, MTZ-82L (repair manual for tractors MTZ 80, 82) pdf

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