Replacement of rings on the trimmer Hoper. Fuel system of gasoline trimmer for grass

4 cycle Troy Bilt trimmer won’t start

Frequent malfunctions and repair of Chinese trimmers.

A gasoline trimmer for grass, which is also called a motorcycle or a benzocosa, is a complex technical device. Therefore, sometimes he breaks and ceases to work normally, or does not start at all.

Despite the variety of brands and models, all breakdowns of such equipment can be divided into several groups, which we will talk about further.

In this article, we will describe the most common malfunctions that the owners of the benzotrimmer may encounter, and talk about the ways to eliminate them.

Malfunctions of the new lawn mower

List of faults of the new lawn mower (gasoline trimmer for grass), which also apply to used tools with a two.stroke engine:

  • Try to replace the candle, even if there is no soot on it. If there is a fiddle on the candle, clean it and, before replacing, try to start the engine with it.
  • Open the gas tank cover. If the engine starts, then the check valve of the fuel tank cover does not work. Try to blow it with air from the outer side of the lid.
  • The amount of oil in the fuel mixture was overestimated. Add oil to the proportion indicated in the instructions on the package (bottle, canister) with oil.
  • Carburetor adjustment is required.

An example of consolidating the composite handle of the Hoper lawn mower with protection against scrolling using parts of a rubber glove:

How to split the piston rings in a motorcycle

How much is the driver’s certificate issued

Will certainly be necessary to substitute oil in the engine, t.to. Part of the product through the rings seeps into the crankcase and mixed with butter, which changes its characteristics and will negatively affect rubber seals and seals. The spark plugs usually change. Glothing the rings in the movement “Dynamic” cleaning of the motor. burning of the breeding in motion. This is the simplest in execution, alas, two or more effective method by playing snowballs with soot. The essence of the method is the use of special additives in fuel for the battle of snowballs with a soil in the combustion chamber. Here, so far, our red.bidder edit has no analogues in the economic market of auto chemistry. Cleaning the engine using our additive is a simple, not laborious and cheap method. Its implementation does not require special abilities, tools and mass of time to remove and install candles or nozzles. In the time of introduction of the product you will spend no more than a minute.

How to split the piston rings on the engine?

It is enough for a period of 5-10 seconds to crank the motor by the starter, not forgetting to set neutral speed earlier.

access is prohibited

In a hot state, the piston from the duralumin alloy expands and presses thin rings into the grooves filled with very thick and viscous, resembling bitumen, “glue”.

Glotting piston rings with folk methods burning at high speed gives real results, if, this, the state of the motor allows for this kind of shift.

From time to time, in order to increase the efficiency of the process, special dissolving additives are added to the fuel, to a thin end, a mixture of alcohol and acetone, approximately 3 liters per 30 fuel, are poured into the full tank, and a mixture of alcohol and acetone are poured.

Glotting piston rings with kerosene, as a world, the method of exciting rings with kerosene is currently used by the owners of old engines, which has no desire to waste the means to “newfangled little things”.

Bearing the engine

For this purpose, you can make a car, set the highest gear to the checkpoint and twist the wheel of the leading axis. If necessary, there is an option clockwise to turn the crankshaft with a belt.

How and how to split the piston rings on the car engine

Cleaning product (“flushing oil allowing accounting (software) with the effect of the rings of rings”) is added to the engine oil for 100-200 km before it is replaced, and until the oil change, the engine must be operated in gentle mode, avoiding operation at the largest speeds at the highest speed.

The composition of the “soft” binger must erode the carbon fiber from the lower oil.cut rings (which, in most cases, are subject to “resting” or coke) and piston grooves. Typically, flushing oil is used for this purpose, 5- As it is also called 7-minute.

Trivial disadvantages of ordinary “soft” splitting: using them does not go out to clean the combustion chamber or the motor valve of the motion.

For the most part, these are classic flushing waters of the oil concrete system, with the addition of cleaning components for removing soil.

Of course, this way is not used in clinical cases of motor pollution, as prevention, using it with each oil substitution.

Trimmer for Echo 22 grass 2 piston cleaning from Nagar.

Even more information about repairing and choosing a tool here www.Looktool.Ru come in always ready for everyone.

  • The “core” mixture of equal parts of kerosene, acetone, benzene is prepared in another Toluol is prepared;
  • The mixture is actively beaten in a tightly closed bottle;
  • The engine warms up to a temperature of not higher than 40 ° C, if necessary, cool;
  • Using a syringe into who is refueling 40-50 ml of the consistency, the candle hole is locked with prepared wooden traffic jams.

After 8-10 hours, plugs are twisted and replaced by a rag. Having twisted several times by the starter, we clean the cylinders, the liquid is thrown through the openings of the candles into the rag. Advice! Despite the relatively low corroding ability of water for shift, before the procedure, it is better to drain the oil from the crankcase into a separate container.

After removing the split composition, 100-150 ml of old oil is poured into the pallet and re-drained.

How to split piston rings

The daily implementation of the car, provided that the town is very harsh tests and loads even for the most modern engines.

replacement, rings, trimmer, hoper, fuel

Invariable switching of the movement modes Start-stop, operation on low-grade combustible and other consumables, the process of oil substitution, performed not according to the regulations-all of the above leads to the need to urgently engage in the separation of the motor.

In the field of trading in the chemistry, special means for excavation are found piston rings

It is necessary to consider what kind of substances it is, how to use them, how they are effective.

The prerequisites for the shift of the parts of the combustion chamber that appears on the oil.shooting rings and in the cylinders, is not actually formed. There are several basic circumstances leading to its education and the need for urgent work to split.

Glothing of the piston engine rings.

Glotting piston rings without disassembling the engine. this procedure is often resorted to car owners, setting a goal to make the properties of the motor and extend the deadline for its use until it is renovated until half the repair. What is the shocking of the motor and how it is done, why it is necessary in its conduct, what type of shift should be preferred and how it is performed more well. try to figure it out. What is the shocking of the motor before answering this common hearing question, you should figure out that there are nooks, what are the main prerequisites for its appearance.

According to Wikipedia Oil Cox (this appears in the piston

The spring may interfere

My first attempt to adjust the gas mowing carburetor did not give anything, since the spring of the fuel mixture adjustment propeller prevented. The factory spring turned out to be too thick in a compressed state and did not make it possible to reduce the supply of fuel to the required level. I had to choose another spring and continue the adjustment after its replacement.

The adjusting screw for feeding the fuel mixture with the spring

In the photo above the factory spring, below the adjusting screw with a selected spring. I am writing about this, because I am not sure that this is an isolated case, and someone else may face the same situation.

The spring may interfere

My first attempt to adjust the gas mowing carburetor did not give anything, since the spring of the fuel mixture adjustment propeller prevented. The factory spring turned out to be too thick in a compressed state and did not make it possible to reduce the supply of fuel to the required level. I had to choose another spring and continue the adjustment after its replacement.

The adjusting screw for feeding the fuel mixture with the spring

In the photo above the factory spring, below the adjusting screw with a selected spring. I am writing about this, because I am not sure that this is an isolated case, and someone else may face the same situation.

From personal experience

lawn mower or trimmer for grass

Trimmer for grass is a broader concept than a lawn mower (lawn mower), since it can also be an electric. The gasoline trimmer for grass and the lawn mower is the same thing.

Some authors assure that a trimmer for grass is a weaker tool, unlike a more powerful lawn mower, which can be used to mow shrubs. Personally, I have a tool with a maximum capacity of 1.7 kW and capable, as stated in the instructions, to mow a small shrub up to 10 mm thick. User manual is called “trimmer for gasoline grass”.

The proportion of the fuel mixture

I read somewhere that if the law mowing manual and the canister with butter indicates different proportions of the preparation of the fuel mixture, the proportion indicated in the manual should be used.

It was done for a long time. excess oil flowed out of the engine to the gas tank and the fiber was constantly formed on the candle, since the leadership indicated a proportion for a run.in engine 1:25, and on the canister. 1:50. After the transition to a proportion of 1:50, the appearance of oil fluxes stopped. The candle continued to burn, but with less intensity (the carburetor has not yet been adjusted).

Until now, some users of the benzo tool determine the fuel mixture “by eye”. If when preparing the mixture the amount of oil is underestimated, after a while an extraneous sound may appear immediately after the engine starts, gradually disappeared during heating, and the engine stop occurs with a sharp jerk. The continuation of the operation of a trimmer for grass in this mode will lead to its failure.

Clead cleaning

In the worst times of the work with a trimmer with an unresolved carburetor, the engine stopped starting after using each fuel tank. And only after cleaning the candle from the car, could you continue to work.

For cleaning the electrodes, fine sandpaper was used, and a thin stationery clip with a bent end was used to clean the space between the insulator and the case. At first, the electrodes were wiped with high dirt with a rag, then cleaned with sandpaper. After that, the candle fell into the diesel fuel and the moistened carpet was opposed by a paper clip from the surfaces of the insulator, the inside of the body and between them. Further, the candle fell several times into the diesel fuel, which then shake off it along with the pollution. Sometimes the procedure for cleaning a paper clip and washing were repeated. After that, the candle wiped dry and was ready for further operation.

Incredibly, one fuel mixture tank with an unresolved carburetor can be spent in less than 10 minutes. verified in practice, when the trimmer for the grass was launched and operated at high speeds with maximum fuel supply (the adjusting screw was unscrewed much more than the norm).

Other articles: lubrication of the shaft of a lawn mower, a trimmer for the grass of the lawn mower malfunction (trimmer for grass) adjust the valves of the diesel motor block heavy diesel unoic tractor (launch, storage) of the MaxCut MC 55 motorbike. drilling of openings for the poles alignment

Online store AgroSemfond-seeds, planting material and other products for the garden and garden by mail from Nizhny Novgorod.

How to replace a trimmer gearbox for grass: an algorithm of action

To replace the gearbox with a similar part from the same manufacturer, it must first be disassembled and removed from the bar. At the same time, they act according to the following algorithm:

  • weaken the fitting bolts located under the transfer mechanism;
  • Using round.drawers, remove two corkscrew rings;
  • Applying the puller, pull the bearings from the driven and the leading shafts;
  • Then collect the mechanism, in the reverse order by installing all spare parts.

The disassembled transmission mechanism is shown in the photo below.

If the puller is not at hand, then you can try to gently knock down the bearings. When they have stuck and do not move at all, you can heat them using an industrial hair dryer (at a temperature of 600 ° C) and remove.

Collecting a gear node is easier than disassemble it. Only a light tapping with a hammer for planting parts in place may be needed. After assembly, it is imperative to check that the driven shaft turns out by hand.

Когда есть необходимость замены передаточного узла неоригинальной деталью, тогда следует учитывать их взаимозаменяемость. At the same time, it should be taken into account:

  • the diameter of the bar (this parameter often is 25.4 or 26 mm);
  • The parameters of the drive shaft. the shape of the docking space and the diameter (its common value is 8 mm);
  • option of consolidation of protection.

If the considered parameters coincide, then it will be possible to set a part from other models.

Timely lubrication of the gearbox will ensure its prolonged operation without repairs. In addition, modern materials protect the metal from corrosion well, increase its wear resistance. When choosing, preference should be given a lubricant recommended by the manufacturer of the operated trimmer for grass. If such compositions are not possible to purchase, then the analogs considered or other suitable in properties should be applied. When it is necessary to disassemble the mechanism during the repair, this should be done carefully so as not to damage individual parts.

Playing a two.stroke engine of a trimmer for grass for grass (lawn mower)

Before using a gasoline trimmer for grass for grass (lawn mowed), it is required to carry out its preliminary running.in. Playing is needed to extend the engine service, because moving parts during the period of the runaway should first work to each other. In addition, during running.in, you can acquire certain skills in working with two.stroke gasoline technique. This is important for those users who first work with the Kamoto benzoca on the brand.

The gas mowing engine is running out with an average and slightly higher than the average load on the engine in a cyclic operating mode: the mowing of the grass lasts 1. 1.5 minutes, then 15. 20 seconds idle. The engine will acquire maximum power after the production of several full tank gas stations.

You can not run into the engine at idle, because the formation of a large amount of soil provokes the occurrence of piston rings or the exit of the spark plug out of order. Recommended proportion of gasoline A-95-2T oil: 1000 ml-30 ml of oil.

replacement, rings, trimmer, hoper, fuel

Playing a two.stroke engine of a trimmer for grass for grass (lawn mower)

Before using a gasoline trimmer for grass for grass (lawn mowed), it is required to carry out its preliminary running.in. Playing is needed to extend the engine service, because moving parts during the period of the runaway should first work to each other. In addition, during running.in, you can acquire certain skills in working with two.stroke gasoline technique. This is important for those users who first work with the Kamoto benzoca on the brand.

The gas mowing engine is running out with an average and slightly higher than the average load on the engine in a cyclic operating mode: the mowing of the grass lasts 1. 1.5 minutes, then 15. 20 seconds idle. The engine will acquire maximum power after the production of several full tank gas stations.

You can not run into the engine at idle, because the formation of a large amount of soil provokes the occurrence of piston rings or the exit of the spark plug out of order. Recommended proportion of gasoline A-95-2T oil: 1000 ml-30 ml of oil.

The first launch of the lawn mower

The correct first launch and running of the lawn mower is very important steps at the beginning of the operation of a new tool. On the one hand, they allow you to save the gasoline engine motor, laid down by the manufacturer, since at this stage there is a grind of moving units and parts. On the other hand, the first necessary skills in working with a trimmer are acquired, if we are talking about the first tool in life.

Law out.handies malfunctions and ways to eliminate them

At least what type of benzos has a half bar, in which the binding cable between the motor shaft and the lower gearbox is placed, which transfers rotation to the tool with cutting inventory. In the highest part there is a carburetor and a motor, a gearbox and a working tool closed by a casing are placed on the bottom. In the middle part there is a transverse handle when the control buttons are placed. To unload the hands, there is an unloading belt holding the bar with a torso of the operator.

In the process of choosing a lawn mower, a device with a two.stroke engine is better than a four.stroke. Two.stroke engine is more maneuverable and easier to repair. With a four.stroke node below the level of vibration.

This follows, repair of the lawn mower is to eliminate defects;

  • the engine does not start;
  • The cutting mechanism does not develop;
  • the engine stalls;
  • the gearbox is heated;
  • a third.party knock, powerful vibration of the bar is heard.

For now, eliminate the malfunction, it is necessary to diagnose, find a non.working node.

Know the point of lubrication of the tool in principle. Unchanged care, cleaning the device after work will allow you to extend its service life. Before starting work, you need to tighten the fasteners, cook fuel and season the tank.

Electric trimmer for grass vibrates

Many mowing users noticed that some time after the start of the apparatus, it begins to vibrate very much. On some trimmers, mainly in models more expensive, an anti.vibration system was installed in the form of shock absorbers seized between the engine and the bar. But in some cases, even she does not save from strong vibration. The reason that strong vibration appears in the trimmer, there may be a small amount or complete absence of lubrication on a hard or flexible shaft located inside the rod of the apparatus.

Replacing the lubrication of the hard shaft is as follows:

  • unscrew the gearbox located at the bottom of the bar;
  • After removing the gearbox, you will see the end of the shaft, for which you need to pull to extract the part;
  • after extracting the shaft, it must be abundantly lubricated with a special lubricant “Shrus-4” or ordinary-“Litol-24”;
  • Apply a small amount of lubrication to the shaft and evenly smear it along the entire length of the part, including the slots at the ends of the rod (if they worked, the shaft will have to be replaced);
  • After lubrication, insert the shaft back into the bar and put the gearbox in the same place.

The lubrication of the flexible shaft is as follows:

  • unscrew and remove the mowing head;
  • remove the bar from the electric motor by unscrewing a couple of bolts;
  • Pull out a flexible cable from the bar;
  • Lubricate the cable with grease along the entire length.

This is done like this: first you need to lubricate the end of the cable, and then insert it into the bar, after which, as it moves into the pipe, you should apply grease to the part and evenly distribute it on the surface. Then insert a bar with a flexible shaft into an electric engine and fix it.

In the event that the lubricant did not help, and the vibration continues to appear, you will need to change the flexible shaft.

Dismantling and repair of the upper gearbox Motokos Trimmer for grass

If you have questions about the repair of the upper gearbox Motokosy. Ask, answer.

There is a “tatra” lawn mower, and there is no one through the holes in the clutch cup. only on the bearing from the shaft side. How to remove a cup (slots are licked on it)

at idle turns, it turns the coil does not stop. Answer what could be SATOL.Tol@rambler.ru

Thanks for the video, I’m going to sort out the elated Stihl 400 in winter, so that is very. informative. IMHO: The bearing is probably better to besiege the inner ring.

Hello! The problem of the upper gearbox scrolls along the rod along with the engine. what to do? I have a gasoline trimmer for PIT grass. Thanks

Thanks for the cognitive video. Very helped when replacing the plate.

Good day. I faced the following problem: I have a Sterwins PBC43R 42.7 SS lawn mower. The diameter of the bar is 28mm. I burned only 5 liters of gasoline (2 months of use on weekends). Damage appeared, there are traces of oil on an elastic band of the art clutch art. 202362 and noticeable backlash in this node: vertical and around the axis of rotation (bar relative). Tell me: what is the approximate motorized resource of these elastic bands? Is there an elastic band amortizer for d = 28 mm and how to buy it (nowhere else) or is it universal with 26 mm? How much more practical and reliable the upper gearbox in the design of which is used by Dampfer art. 202088? Are there any advantages of a diameter of 28 mm except strength, since I understood spare parts much more difficult, I think about the transition for 26 mm? Thank you very much in advance!

Good afternoon, such a question for me can replace the upper gearbox square with a gearbox with 7 slots.

Press the bearing with blows on the outer ring is barbarism and murder of the bearing

In order to pull the shaft, you need to unscrew from the upper and lower gearbox?

See the people, in no case do not score the sweaters in this way.

By the way, all the videos show that you need to samd the lower gearbox, no one explains how and how to lubricate the lower gearbox and how often it needs to be done?

Tell me the gear ratio of this gearbox, I’m Sasha, thanks

how to replace the bushings inside the bar, bought the shaft 9, and it is thicker than the shaft 7

people do not knock down the bell! you will bent it, it must be instructed to be on the emphasis.

Hello, tell me, the bearing that you have changed as it is lubricated?Thanks.

in general, on the internal clip to press.

Hello. Do not tell me what can be made with a torn cut on Binzo braids for grass, on Tselindra where the carburetor is attached.

Trimmer Repair. Replacing the Fuel Line Grommet (Echo Part # 13211546730)

Bearing (any) on the shaft plants only on the inner ring

Good evening, the bar is staggering from side to side in the upper gearbox that you need to change the bearing or elastic band?Thanks

The dude with a specialist for an external clip is clogging the bearing, so that this motorcycle is again brought to him again.

Good day. Tell me the trimmer for the grass of the throttle lever when the “throttle” is positioned, and then when I translate to “start” the engine stalls.

After five minutes of work, Trimer is strongly overheating of the upper gearbox

Tell me why my upper gearbox is very hot ?

Watch our new videos on the new generation of the new generation VIULY analogue Yuotube https: // Viuly video.IO/R/K585255A74CD13B

Do not tell me, in the Demfer gum inside there is a clamp the upper gearbox (rod) how to pull out this clamp with an elastic band? It’s useless with his hands, it bursts in a vice, today this clamp in the form of a tube burst when I twisted the clamping of the rods, now I’m sitting with a scales of how to disassemble and make a new one out of the pipe, otherwise the second time is completely gearbox in collecting it.

The new ProCraft lawn mower, the upper gearbox is not clamped during assembly, pulled the bolt to the end, but lasts only on a fixing (from turning) bolt.What can be a way out of this situation?

Tell me, the upper gearbox is warming up and the bar is staggering what the reason may be?Kose 1 year, did not understand. thanks in advance.

DIY lawnies repair: main malfunctions and their elimination

The lawn mower is one of the main instruments of the summer resident used to quickly bring the land in order. The owners of private houses acquire this weapon for mowing grass in the personal territory. The period of active use of benzos and electric trimmers falls on the summer period.

Before starting operation, the tool is brought into working condition: the rubbing parts are lubricated, the cutting headset changes, the fuel mixture is poured into the tank. If the engine does not start or stalls quickly, without gaining enough revolutions, then you have to look for the causes of problems and eliminate the identified malfunctions.

To carry out the repair of the lawn mower with your own hands, you need to understand its device and the principle of operation of the main nodes. This information can be found in the operating instructions, which the manufacturer applies to garden equipment without fail. Check for such a manual when buying a chainsaw.

replacement, rings, trimmer, hoper, fuel

The import tool should be accompanied by instructions written in Russian.

How the household lawn mower arranges?

A long tubular bar is attached to the gearbox of a two.stroke internal combustion engine. Inside the rod passes a shaft transmitting torque from the gasoline engine to the cutting mechanism.

Fishing line for a trimmer or knives rotate with a frequency of 10,000 to 13,000 revolutions per minute. In the protective case of the gearbox, the presence of holes is provided, into which a lubricant is introduced using a syringe.

For the convenience of using the tool, the manufacturer equips it with a special adjustable belt thrown over the shoulder.

The cutting headset is attached to the gas codes:

  • Lines for a trimmer, the thickness of which varies from 1.6 to 3 mm, is located in a trimmer head. During the mowing of the grass, the fishing line for the trimmer is worn out. The fishing line is replaced quickly and easily in two ways: by winding the fishing line of the same diameter on the bobbin or by installing a new coil with an already wound fishing line.
  • Steel knives with bilateral sharpening a lawn mower to cleanse the site from weeds, small shrubs, hard herbs. Knives differ in shape, as well as the number of cutting surfaces.

On the U-shaped, D-shaped or T-shaped handle attached to the bar, there are tanosa control levers. The cutting mechanism is fenced with a special casing.

Domestic motorcycles are refueling with a mixture prepared from gasoline and oil, which is poured into the fuel tank. The device of semi.professional and household motorcycles equipped with a four.time gasoline engine is slightly different.

The gas station is also different: the oil is poured into the crankcase, and gasoline is in the tank.

A measured piece of fishing line is folded so that one end is longer than the second by 15 cm. We put the loop into the slot on the coil, and begin to wind up in the direction indicated by the arrow

What to do if the engine does not start?

If the lawn mower fails is not possible, then the first thing is to check the presence of fuel in the tank and its quality. For refueling the tool, it is recommended to use high-quality gasoline purchased at gas stations, the brand of which should not be lower than the AI-92.

Savings on cheap fuel can lead to a breakdown of the cylinder-piston group, for the repair of which a third of the cost of Motokosa itself can take. It is equally important and correctly preparing a fuel mixture of gasoline and oil. The proportional ratio of these components of the mixture is indicated by the manufacturer in the manual.

Do not prepare the fuel mixture in large volumes, since during long storage its properties are lost. It is better to use a freshly prepared mixture.

When preparing the fuel mixture, pour the oil into gasoline using a medical syringe that allows you to accurately observe the necessary proportion of the components

Fuel filter pollution in the tank may also prevent the operation of the lawn mower engine. Therefore, when problems with the launch of the motor, check the condition of the filter. If necessary, replace the filter. It is forbidden to leave the incoming pipe without a fuel filter.

The air filter also needs to be in the test. During contamination, the part is removed, in the field is washed in gasoline and put in place. In the country or at home, the filter can be washed in water using detergents.

After that, the filter rinses, squeezes and dries. The dried filter is moistened with a small amount of oil used to prepare the fuel mixture. Excess oils are removed by compressing the filter with hands. Then the part is installed in place.

The removed cover is placed back and fixed with screws.

The air filter washed in the fuel mixture, squeezed and dried, is installed in place in the plastic case and covered with a lid

How this procedure is done in more detail you can look at

If all of the above procedures are carried out, and the engine is not started, then adjust its revolutions at idle, twisting the carburetor screw. In the video posted at the beginning of the article, attention is paid to this issue.

Tips for quickly launching the unit

  • Put the tool on the side so that the air filter is at the top. With this location of the chainsaw, the fuel mixture is ensured exactly into the bottom of the carburetor. On the first attempt, the engine will start if you remove the air filter before starting and pour a few drops of the mixture into the carburetor, and then install the dismantled parts to the place. The method is tested in practice.
  • If the first advice does not give a result, then, most likely, the problem in the spark plug. In this case, unscrew the candle and check its performance, as well as dry the combustion chamber. A candle that does not show signs of life, replace the new.
  • If the spark plug is in good condition, the filters are clean and fuel mixture, then you can use the universal way of starting the engine. Close the carburetor air damper and pull the starter handle once. Then open the damper and pull the starter 2-3 times. Repeat the procedure from three to five times. The engine will surely start.

Replacing piston rings without removing the engine, video, with your own hands

The fact that the car requires precisely the replacement of the piston rings, and not some other repair work, the engine itself will tell. Signs of such a malfunction are manifested quite brightly, so it will be difficult not to notice them. But before talking about symptoms, you need to understand what the rings are, and what role they play in the operation of the engine.

What are piston rings, their purpose

The piston rings are elastic, unmarked elements that are installed in special grooves on the piston case. They are made of steel or cast iron of increased strength, and covered with alloying material on top. The alloying coating further increases strength, and also reduces the speed of wear.

Typically, 3 rings are inserted into the piston: 2 compression (occupy 2 upper grooves) and 1 oilfold (lower groove).

The task of compression rings is to prevent a breakthrough of hot gases along the piston into the engine of the engine. Oil steel. relieves excess oil from the cylinder mirror, preventing it from getting into the combustion chamber.

In addition, the rings reduce the piston temperature, transmitting almost half the heat of its surface to the cylinder walls.

When the piston rings cease to cope with the tasks assigned to them, due to its wear, the car engine signals this manifestation of the corresponding symptoms.

The fact that wear has reached a critical stage is evidenced by blue or black smoke from the exhaust pipe. This indicates that the excess oil fell into the combustion chamber past the oil.removable ring and burned there with the fuel. Black smoke that comes out of the crankcase ventilation tube suggests that compression rings due to wear allow gas breakthrough from the combustion chamber into its cavity.

Critical wear is accompanied by a decrease in compression (ability to maintain pressure) in engine cylinders.

This means that part of the gases formed during the combustion of the fuel mixture, which was supposed to push the piston, broke into the crankcase without doing useful work.

This is what will lead to a drop in pressure in the cylinder, therefore, the engine will lose part of the power. There is an increased oil consumption.

The compression is checked by a special device. compressometer.

Когда номинальные значения давления неизвестны (нет инструкции по эксплуатации), сначала оно измеряется в сухом цилиндре, затем через свечное отверстие заливается немного моторного масла, и замер делается заново. If the compression rises, then the replacement of the rings is required. Similar signs can be observed in the case of their “occurrence”.

Such a problem, if the case is not very launched, can be corrected using special additives to fuel. A carburetor engine, you can try to clean with a spray for removal of a carbar, which is injected directly into the carburetor. If the removal of soot from the combustion chamber did not give the effect, then there is only one way out. replacing the piston rings and cleaning grooves.

How to replace piston rings yourself

Of course, the replacement of the rings is a rather laborious procedure. It requires accuracy and certain skills, but by and large there is nothing complicated in it (if you do not remove the engine). For this you need:

  • remove the cylinder head, observing all the recommendations of the car manufacturer;
  • Drain the oil, remove the protection of the flywheel and the tray of the engine crankcase;
  • remove the oil intake;
  • Having checked the crankshaft, install the desired piston in the lower dead point;
  • unscrew the connecting rod cover and remove it;
  • pull the piston along with the connecting rod from the cylinder, pushing it up with a wooden rail;
  • peel the piston. On his marking, install the piston class, purchase the corresponding new set of piston rings;
  • Each new ring before installation is first inserted into the cylinder to check the gap in the lock. The gap must correspond to the value specified in the operating manual of the car. If it is less than the necessary, then the ends of the castle are neatly sawn by a file;
  • the pistons are carefully cleaned of the carbon. Holes designed for draining oil are also cleaned with a suitable wooden stick. Cleaned grooves are lubricated with clean engine oil;
  • Rings are dressed starting with oilflower. On one side of the ring there is a labeling “Thor” (up), which indicates how it should be installed in the piston. Castles must be installed after 120 degrees relative to each other. This will exclude through the penetration of gases through them. You can not wear the rings with a “turn”, such an installation may be accompanied by the appearance of microcracks that will lead to their breakdown;
  • To assemble in the reverse sequence, simultaneously cleansing everything with a clean rag and lubricating with fresh motor oil. Pistons should be installed in those cylinders from where they were removed. Also, the lids of connecting rod liners should be worn on the same connecting rods from which they were removed.

If the wear of the connecting rod liners allows you to use them again, then you should not make a replacement, since for this you will need to waste the neck of the crankshaft. Independently, such work without experience, it will not work to do qualitatively.

  • sets of rock and uniform keys, as well as a cable with an extension cord and heads with a face value of 10. 19;
  • Dynamometric key;
  • specialist. Puement (mandrel).

In addition, you will need a sealant resistant to oil. It will come in handy while installing the gasket gaskets and the valve cover.

And it seems that there is nothing complicated in the above actions, if you replace it without removing the engine from the car. However, there are nuances, without which the engine with new rings will not work for a long time. When the cylinder reaches the limiting stage of wear, a “step” forms on the surface of its mirror.

Having hit her, a new ring will either immediately break, or get a crack, which will eventually lead to its breakdown. In addition, the grooves of the old piston also have wear, so the grinding of new rings to the cylinder will be difficult or completely impossible.

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