How to check the lid of the car's expansion tank: how it works, checking for performance and malfunction

The role of the engine cooling system is difficult to overestimate. At the same time it is believed that the most important parts of this system are the pump and the radiator. But is it really? For example, what secrets hides an ordinary little cap on the neck of the expansion tank?

Attentiveness will help to avoid such breakdowns. It is necessary, at least a couple of times a month to conduct a visual inspection of the engine and all liquids of the car. Much, of course, not to see an unprepared look, but if some suspicions of the engine and cooling system arose, it is necessary to immediately refer to the specialists. And the lid itself, on the serviceability of the valves, is checked quite simply.

First, it should not be dirty, oxidized and with corrosion traces. Secondly, the inner surface of the lid should always be clean, the valves should be smoothly adjusted by pressing the finger on them. If the lid decide to the ear and click on the exhaust valve, there should be a weak sound, similar to a whistle, and removing the finger from the valve, the sound should be hissing, as if air is drawn.

To check the lid, you can use a pump with a pressure gauge. After removing the thinnest, upper nozzle from the tank, you need to attach a pump to the tank and start feeding the air. The outlet valve should work from pressure not more than 1.5 kilograms per square centimeter, or another 1.5 atmosphere. If the valve does not work, the cover must be changed. Path, such simple manipulations, you can determine the health of the lid of the expansion tank, and to eliminate the malfunction in time, which will save the car engine from serious damage.

What is the lid of the expansion tank

Any driver, even the most inexperienced, knows well why the expansion tank is needed in the car. The coolant is poured into it, and the remaining free volume is intended to compensate for the increase or decrease in the amount of expansioned fluid.

Accordingly, the tank closes with a lid. The cover is mounted on the tank neck in its upper part. Many drivers do not give a large value to the lid - after all it is important to simply maintain the tightness of the tank, and what exactly to close it, does not matter.

Yes, the extension tank cover is a locking element. However, contrary to the problem, the lid has a complex structure and performs special functions.

The cavity of the lid includes a rubber seal and a double valve mechanism

What is the element

In its composition, the cover has as many as two valves. They are designed to protect the cooling system from possible damage due to overheating, moreover, these valves stabilize the operation of the entire system.

If you unscrew the lid from the tank and look at its inner structure, you can see a kind of pressure adjustment sensor.

Two valves are corks of two closing springs

The lid necessarily tightly (without gaps) adjacent to the glands of the tank. For reliability of the compound into the cover includes a sealing gum. Only two valves are built in:

  • The first swelling pressure in the tank;
  • The second pumps the necessary pressure into the tank if the pump is not cope with its work for any reason.

These valves received their names due to the use of high or low pressure: on the vases the first valve is called safety, and the second is vacuum. However, both are at rest while the pressure in the tank in the specified test range.

The valve mechanisms of the lid on the vases are springs

The driver does not always remove the malfunction in the work of the cover valves. Visually make diagnostics is simply impossible. But breakdown parts of the lid of the expansion tank can lead to serious problems with the motor unit.

Expansion Tank Cover Symptoms

The owners of Russian-made cars know how important it is to monitor the state of all systems in the design of the machine. Even such a small element like a lid of the expansion tank can make a lot of troubles - for example, if the valve mechanisms fail, the operation of the entire cooling system may be disturbed. As a result, overheating of the motor and cylinder jamming. The driver in this case is waiting for expensive repairs.

Therefore, to prevent unpleasant consequences, you need to carefully follow while driving for some features in the behavior of the car:

  • There are smoke clubs from under the hood - therefore, the coolant fell on the split surface of the collector operating on the inlet. To get to the collector Tosol could only for one reason - the safety valve on the lid was out of order;
  • From the stove there is a cool air, and the engine is very hot: this is a sign of failure of a vacuum valve cover. Due to problems in its work, air traffic jams arise in the cooling system, which leads to the overheating of the motor;
  • The breakdowns of the clamps, the gaps of the hoses also indicate that the pressure in the system is unstable. And since the lid of the expansion tank is responsible for the pressure, then these symptoms say that it is time to replace or repaired.

If smoke clubs are broken from under the hood, it may indicate a malfunction of the expansion tank cover

Cover device

It is important to understand that the shut-off element for expansion tanks is on any car, under the hood of which ICT is installed. And it is not fundamentally important, Diesel he, gasoline or gas-operating.

Therefore, the problem with the failure of this node can occur on any car, including such models as:

  • Lada Kalina;
  • Ford Focus;
  • Gazelle Nex;
  • Daewoo Lanos;
  • Volkswagen Passat;
  • Lada Priora;
  • VAZ 2110;
  • Renault Logan;
  • Opel Astra;
  • VAZ 2114;
  • Chevrolet Lacetti, etc.

You have already understood that the cover serves not only to prevent pouring the coolant from the tank. This is also a pressure regulator in the system.

Inside the cover, completed from plastic, the valve is hidden. It is he who takes such responsibility. The valve is immersed inside the expansion tank, and as necessary, hesitates or blends overpressure.

Before buying a new item, if the former you suspected in a breakdown, you can check it. You should choose a similar type of lockable mechanism.

Note that all modern foreign cars in the overwhelming majority of cases switched to unlumped lids for expansion tanks. That is, only one design of the valve is physically present. Just it can simultaneously perform two functions at once. While on domestic cars still can be found a couple of valves. Each of them is responsible for performing the appropriate function. Good or bad, it is difficult to judge. But the fact remains a fact.

The covering of the lid occurs only when an excess pressure is recorded or its deficit in the system. For each car there are its own temperatures and pressure standards to trigger the item.

How it all arranged

The main task of the sealing device on the expansion tank is to withstand a certain pressure for the system. In this case, the threaded connection is required to provide a high density of surface adjacent after the screwing.

The expansion tank cover device assumes the presence of a built-in valve providing the voltage balance. Depending on the current situation, one of the tasks is performed:

  • There is a process of blending excess volume into the atmosphere;
  • the volume is performed to get rid of vacuum inside;
  • The valve is in a closed position, without interaction with the surrounding space.

It must be borne in mind that in old domestic cars, two independent valves are engaged in pressure and discharge of pressure. In modern machines for both operations, bypass one valve.

What is the lid of the expansion tank

Speaking in truth, few drivers give great attention to such part of their car like a lid on an expansion tank. 90%! Auto owners believe that the lid performs the role of a locking device, that is, it simply prevents the reinforcement of the coolant while driving . However, this is the opinion of amateurs.

The tank cover is really a locking device, but this is not the only feature. Inside the lid there are two valves that stabilize pressure indicators in the cooling system and protect the engine from the effects of high temperatures.

The lid fits tightly to the edge of the tank, the conditions for the complete sealing of the cooling system are created.

Device and functions

So, the lid in its composition contains the following items:

  • The housing made of solid plastic alloys;
  • rubberized gasket that performs the role of the seal;
  • Two valves, one of which lowers high pressure in the system, and the other - raises if necessary.

In the composition of the covers of different car models can be from one to three springs

In fact, the lid of the expansion tank is a pressure adjustment sensor. After all, when heating the motor, the temperature of the coolant increases, and therefore its volume increases. The more antifreeze or toosol, the higher the pressure in the cooling system is heated. When peak temperatures, the amount of coolant may increase the expansion period by 20%! Of course, with such loads, both the tank itself can be broken, and the nozzles suitable for it. That this does not happen, a safety valve is embedded in the tank cover, which gradually blends excessive pressure.

The second valve is called a vacuum, since its main task is to increase the pressure in the system. It works primarily in the winter season when the car parks overnight on open areas. During the parking lot, the coolant quickly cools and begins to decrease in the amount. Accordingly, the pressure in the system falls quickly. When the driver launches the motor, the antifreeze cannot cool it efficiently. To stabilize the cooling fluid pressure, a vacuum valve mechanism is installed in the tank cover.

If the lid has lost hermeticity, it can fly from a tank neck under the action of high pressure

That is, the lid of the expansion tank on cars works "on both sides" - it can both lower and increase the pressure. Despite its seeming simplicity, the lid performs the work of paramount importance and, one can say, the hoses and the radiator from damage takes place.

Consequences breakdown tank cover

Many drivers rarely pay attention to the tank cover, and do not even suspect which important role it takes the entire cooling system. This cover, many do not open years, and it begins to cry. The valves cease to work correctly, and one fine, due to the lack of tightness in the cooling system, air traffic jams are formed.

The car begins to boil, the heater of the cabin stops working. The superheated engine fails, and its repair is quite expensive. It also happens that the exhaust valve encourages, and then, in the cooling system, an excessive pressure is formed, which can break the nozzles, the cooling radiator, the stove radiator, or to punch the path into the engine crankcase through the sealing gasket of the cylinder head.

And this is not counting smaller engine parts such as pump, thermostat. Elimination of consequences is very expensive. All these faults happened only because of the breakdown, it would seem such a non-essential detail as the lid of the expansion tank.

How to check the lid on the "Prior", "Grant", "Kalina"

It seems that it is enough to unscrew the cover from the expansion tank and inspect its inside to understand the specifics of the problem. However, it is not. For example, in service centers, special pressure pumps are used, which may pump the desired amount of atmospheres. . Creating artificial pressure in the cooling system, the device allows you to calculate the correctness of the valve triggering.

The device for diagnosing tank covers VAZ has a pressure gauge and pump

But the drivers do not have this expensive equipment, so you have to cope with what is in the standard garage. Diagnostics of the quality of the tank cover will be less accurate, however, it will be possible to identify the basic valve faults:

  1. Move the engine.
  2. Unscrew the cover from the tank neck.
  3. Inspect the product for cracks, dents, chips. Maybe the sealing gasket ripped or strongly worn.
  4. In the event that there is no visible damage, the cover should be spinning back and start the motor.
  5. Wait until the engine is warming up to its standard temperature.
  6. Start slowly unscrew the cover from the tank.
  7. If a whistling air whistling is heard during unscrewing (this sound can be compared with the output of gases while opening the lemonade), then the lid is in working condition, as it restrains the pressure in the tank and hoses.
  8. After that, you need to drain the engine again.
  9. Inspect the cooling system nozzles. If they are drawn inside, the lid vacuum valve does not work well, since the pressure in the system is extremely low.

The lid of the expansion tank can be unscrewed only after the engine has cooled the working cover should not have extensions, cracks or dents all the nozzles must have an equal diameter, without thickens and compressions it is interesting: preliminary diagnosis

This is a typical scheme of checking the valves of the expansion tank cover on all models of vehicle vehicles AvtoVAZ.

Signs of faults

Before checking the lid, you need to receive a signal that it potentially failed and does not fulfill its functions.

The symptoms of the breakdown rather is indirect, and can manifest itself in the following form:

  • From under the hood, pushes thick white smoke;
  • The engine overheats, but the stove remains cold;
  • breaks the clamp;
  • breaks the cooling system tubes;
  • The tightness of the radiator is disturbed;
  • bursts a tank with cooling fluid;
  • tubes are compressed and do not miss the coolant;
  • Violates the circulation of antifreeze through the system, etc.

Smoke usually appears when the pressure exceeds the allowable values. But overheating with a cold heater indicates just pressure deficiency in the system. It will be useful to remind you of the material on the elimination of the air traffic jam. I will leave a link to it. Go and read.

Widget methods

Before checking the plug of the expansion tank, you need to know that special pumping pumps are used in car services for such an operation. They are configured in such a way as to check the verification to the critical values ​​of the work. Then it will be seen whether the opening or closing occurred at the right moment.

Self testing does not always give objective readings. However, when it is conducted, in most cases, it is possible to identify the loss of the wellness of the node.

Control of operational characteristics is carried out as follows:

  • On the cooled engine, remove the lid and inspect to detect chips, cracks or slips. All seals must be plastic and ensure tightness. There should be no mechanical damage.
  • Even if some minor damages are revealed, we return everything to our places, tightly twist and start the motor.
  • We expect when ICE warms for a few minutes and carefully begin to unscrew the lid on the thread. In the event that a small cotton is heard, similar to the sound of the opening of a bottle with a drink, you need to know what the pressure contains in the system.
  • Carefully carry out the inspection of thick flexible hose of the cooling system. If they are seen in the pressure inside, this is a sign that the valve stimulates the formation of a unwanted vacuum inside the cavities.

Sometimes a test for checking the elimination of minimum pressure is carried out. To do this, we evonic, remove the lid and squeeze one of the flexible thick hoses. Next, we screw everything in place and only then let go hose. Under the workable valves, the hose will return to a normal state, and otherwise, will remain compressed.

Sometimes after spinning the valve remains inside the tank. This situation is not the norm, so it is necessary to look for a product to be a healthy replacement.

The car is a mechanism in which each detail performs its task. The malfunction of one may entail a violation of all systems. Few people know how much importance is such an element in the engine (internal combustion engine) of the car, like a coolant tank cover, which will be further described.

On the one hand, it may seem that this cork simply does not allow splashing antifreeze or toosol. Not so simple! Believe me if this part in the engine is unusable, the main components of the car will have problems. Accordingly, your wallet will have to lose weight.

Which is unusual in the cover of the coolant tank

It would seem that the usual plug, which closes the container with the liquid, but mostly the entire negative proceeds due to the non-liquidity of this element of the FRO. In this element of the system there are 2 valve mechanisms (regulator). One drops overpressure, and the other on the contrary, the air is injected to increase the pressure.

Article on the topic: How to remove air from a car cooling system

When the system is heated when the car engine is running, the valve resets the excess pressure to maintain the system in working condition. In the case of engine cooling, the pressure drops in the cooling circuit. So that nozzles begin to shrink, and the system did not come into a non-working condition, another regulator enters the game, increasing air from the atmosphere inside the system.

A lot of important fact associated with the lid of domestic production is that this detail sometimes needs to be refined in the garage conditions or at home. From the factory, the springs have a lot of turns, thereby produces a dense contact of the valves with a lid.

See also: How to change the valve cover gasket correctly in the garage conditions

Therefore, they cannot fulfill their functions in full. Drivers-needlewomen fix the defect on their own. If you do not understand the technical part of the car, it is better to contact the service center or replace the item.

How the cover and the principle of its work

This element has a simple structure:

  • Plastic cover (shell);
  • 2 springs with valve;
  • Cork with holes;
  • Rubber compressor.

The principle of traffic performance is also very simple: in case of excessive heating of the cooling circuit, the regulator descends overpressure. On the contrary, if it is low in the circuit, the regulator passes through itself atmospheric air to gain pressure. Due to the inlet valve, the cooling circuit is constant.

If one of the elements of the cooling circuit turns out to be leaning, the system will be air. As a result, an air traffic jam occurs. Where it leads? OVER overheating or circulation disruption throughout the system.

Signs of malfunction

In the case of overheating, the engine drivers try to find a problem under the hood, in particular check the coolant tank cover that keeps the pressure in the cooling circuit. An antifreeze (toosol) can become a sad result of overheating, which can enter the engine itself.

The main and main problem is the violation of the internal valve. In case of violation of its performance, air falls into the system, as a result of which an air traffic jam is formed. It does not allow to circulate antifreeze (toosol) inside the hermetic cooling circuit.

If the lid is faulty or the inlet valve itself, the following may occur:

  • Violation of hoses integrity due to exceeding the period of operation or low-quality materials;
  • The melting of the thermostat shell;
  • The formation of leaks in the radiator;
  • Disruption of the tank integrity in which the coolant is located.

Important! To prevent problems in the internal combustion engine, which may arise:

  1. Replace faulty item 1 time in 2-3 years;
  2. Constantly monitor the level and quality of antifreeze, which is covered in the tank system.

Why presses antifreeze from under the tank tube

The main reason for the exit of antifreeze from the expansion tank is a traffic jam.

In addition to the location element itself, there are a number of other reasons due to which the coolant can be released:

  • Crack in the tank housing in which antifreeze is located;
  • The depressurization of the cooling circuit, as a result of the gasket of the engine block head;
  • Poor pump performance. Because of it, circulation in the cooling circuit does not allow the insides to cool to an acceptable temperature;
  • Thermostat breakage;
  • Cracks on the radiator;
  • Cracks on hose and nozzles connections.

How to check the lid and eliminate the problem

Originally wrap the detail on the subject of damage. The inconsity is the main factor that can harm the entire cooling system and the engine as a whole. When buying a new cover, check it for damage, as it is possible to marry from the store.

If the lid without external defects, it should be tightened and start the engine. DVS should work to type the operating temperature. After this action, you need to carefully scroll through the stopper counterclockwise. There should be a hissing sound. From here you can understand that the plug really works as it should.

While the engine is equipped, you should check the thick nozzles of the cooling circuit. If in the system inappropriate pressure (low), the nozzles on the engine running will be depressed.

Unscrew the lid of the expansion tank and squeeze the nozzle. After close the plug and release the nozzle. It should come to the initial form when the pressure is casual for the power unit in the cooling circuit.

The best option for the test tube test tube is a pump with a pressure level measuring indicator in the circuit.

Diagnostics of element on vehicles Calina models, Priora, Gazelle

To understand the condition of the cover, it is necessary not only to check its condition, but also to diagnose with atmospheric air. In special service centers, the pumping equipment is used, which injected the required amount of atmospheres. They can calculate the performance of the valves in the lid of the expansion tank.

For example, at drivers on the prior there is no special pump, how does it check the operability of the lid of the expansion tank?

It is interesting: What to do if the car door hits the current

The diagnostics of the quality of the operation will be less accurate, but you can still identify malfunctions of the valve operation:

  1. First, drowned the engine.
  2. As a power unit of the car stands a little, unscrew the cork with the neck of the expansion tank.
  3. To inspect the details for the presence of pronounced defects. View the rubber seal inside the lid.
  4. If the plug is in good condition, return the cover back and start the engine again.
  5. Expect while the engine does not pick up the standard temperature.
  6. Take a plug in hand and smoothly unscrew to hissing air. If it appears, the valves in traffic are ready for further operation.
  7. Engine drown out and let stand.
  8. Inspect the hoses adjacent to the contour. If they are drawn, then in the system pressure below the norm. Accordingly, the vacuum valve does not cope with the regulation of pressure.

This is the main instruction for AvtoVAZ models. This instruction will suit Kalina, prior and models of the Gazelle brand.

Checking the lid on VAZ 2108 models - 2116

Each generation of cars, starting with the "eight", the technology of test tube testing systems does not particularly differ. Tell in order.

Inspection of the element on the VAZ 2108/2109

The structure of the "eights" and "nine" allows you to check the readiness of the operating valve valves in just 60 seconds.

The procedure for such:

  1. Open the hood vase. Wait a couple of minutes so that ICE stood a little after operation.
  2. Loosen the cooling circuit tank cover.
  3. Squeeze the supply pipe that there are strength.
  4. Simultaneously with the compression of the hose, tighten the plug on the neck.
  5. Then let go of the nozzle.

Straightens after compression, everything is in order with the valves and you have nothing to fear.

Cork diagnostics on VAZ 2110-2112

Technology testing this part exactly the same as all models of car VAZ brand. The main thing is how different: when opening a lid, the mechanism that is installed in it can fall out.

For your information: Signs of the crankshaft sensor faults and its check

This is not a sign of a malfunction, just a factory defect. If you do not install it correctly, then this element of the contour, alas, will not work long.

Check details for cooling circuit on VAZ 2113-2116

All simple, comrades Motorists:

  1. Start the engine.
  2. Opening the hood and start unscrewing the tank cover of the system.
  3. If at the very first manipulation from under the cover comes the sound of gases, everything is in order and nothing to worry about.

The developers of new models of the Russian brand create newer and complex mechanisms. Therefore, checking the performance of valves in handicrafts may not bring results. You will have to contact the service specialists in this case. There you can digitate the coolant tank cover using special equipment.

What is the conclusion

The lid of the expansion tank is an element that is vital to the engine. It plays the role of not only a locking device in the boilers, but also a kind of regulator. The plug adjusts the pressure in the cooling system, which allows the power unit to work properly and without complaints.

On this topic: How to check the high-pressure sensor G65 air conditioning system

But if you occur the moments that are forced to doubt that the lid is faulty, then it should be checked on mandatory. All methods and procedures are described above.

In cases where the lid in improper condition, it is recommended to purchase a new one. Best option to buy in a specialized automotive, it is the brand that owns.

The original lid will last longer than those purchased in the markets. By installing the original, you can not worry about the cooling system for several years.

Most drivers do not even suspect how much the engine cooling system depends on such a small and simple element, like the lid of the expansion tank. In this article, I will try to explain what role the lid plays, which consequences can cause its breakdown, and also show how it can be very easy to check it.

How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).

The role of the lid of the expansion tank.

Inexperienced drivers believe that this cover is only doing that it locks the expansion tank so that the cooling fluid does not flush from it. But this is not the case, because the lid pays much more secrets.
How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).

Thanks to the lid in the cooling system, the desired pressures are supported. , it is a kind of regulator, which blends overpressure when heating the engine, and does not give a vacuum and air traffic jams when cooled it.

The lids of the expansion tank are equipped with one or two valves that perform the role of pressure regulator. Their breakdown can lead to the saddest consequences.

What consequences can cause a breakdown of the lid of the expansion tank.

It all depends on what valve fails. If the valve is breaking, which blends overpressure, then at best it will be a refrigeration fluid leak as a result of a breakdown of one of the pipes. If you do not notice this on time, the engine easily can overheat.

How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).

The situation will be worse if the expansion tank itself bursts, or a crack in the radiator or the cabin heater will appear. Then you will have to get out for new parts

If this valve is embroidered in the open position, then the desired pressure in the system will not be, Accordingly, the boiling point of the liquid is reduced.

As for the valve, which works when coolcing the engine, the consequences of its breakdown can also be unpleasant. For example, the formation of an air traffic jam, because of which the stove in the car blows with cold air with a hot engine. It is unpleasant to get such surprises in winter, believe me.

By the way, as I said earlier, on my car, the stove works very badly, Therefore, I decided to check the capability of the lid. At the same time, I will share with the results and useful information with you.

How to check the performance of the lid of the expansion tank.

I will tell everything on your own example, I also use our photos exclusively.

To start in the morning, before running the engine, I decided to check the operation of the valve that protects against vacuum. To do this, just open the hood, and look at the nozzles. If they are not drawn, everything is in order. I did not have any problems.

How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).
The second way to check this valve is also quite simple. You need to unscrew the lid of the expansion tank, alternate one of the connections, then tighten the lid. If the nozzle accepted its former form, then the valve works.

Then heating off the car, and we try to gently unscrew the lid of the expansion tank, Must be such a "PSHICT", as if you are opening the carbonated water . If there is no such, then the second valve does not work, or the cooling system is leakage.

It happens that the valve holds too weak pressure for normal cooling system operation, then a more detailed and accurate check is required.

Checking the second valve is made complicated and requires an additional purchase of two clamps. There is also a compressor, but in our time, I think everyone has.

So, it is on my car, the experimental pipe was the one who comes from the radiator to the expansion tank. I cut off the nozzle so that his small part remains is drawn to the expansion tank. The hole in the nozzle, I plucked the bolt and delayed the clamp.

How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).

To a piece of the nozzle that remained on the expansion tank, I picked up the compressor and also tightened the clamp.

How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).

After that, we turn on the compressor and follow pressure indicators in the system. If it is not created at all, we are looking for where the air is woven. If the pressure is created, then follow the moment when the valve works and is exploring too much. On my car, this indicator should be 1.2 - 1.5 atmosphere.

But the pressure was recruited, but after turning off the compressor quickly fell. A clear sound from the lid was heard.

How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).

Without thinking, I went to the store and bought a new one. I had to take the original for 540 rubles, the rest did not inspire special trust.

How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).

After replacing the cover, the pressure typed very quickly and kept in the limit of 1.2 atmosphere. Now all the indicators were normal, and I hoped that the stove would finally begin to warm the warm air.

How to check the operability of the lid of the expansion tank. (In my opinion, this is the best way).

But unfortunately, the stove began to work better quite a bit. In the car, at the same time, the temperature cannot rise above 15 degrees, even if it is only possible to change the heater on the street, which remains not the easiest job. But I will definitely write about it in the following articles.

Write in the comments, do you follow the state of such an element as the expansion tank cover? What problems did you manage to meet for the whole experience? I am sure you have something to tell, because among my audience there are quite experienced motorists.

Put your finger up and leave a few comments and Subscribe On the canal. To new meetings!

Aerial cork in the cooling system

The dependence of the appearance of air traffic jams in the cooling system from the lid of the expansion tank

When heated fluid in the cooling system, it expands and increases the pressure in the system. In order for the system not to break the lid of the expansion tank with an increase in pressure in 1.3 atmosphere should produce excess air. When cooled, the liquid and air is compressed and the vacuum appears in the system. In order for the air to be suited from under the nozzles, the cover should fluidly insert the air into the expansion tank.

Often, the data of poor quality covers or simply oxidize and stop normally intensively and produce air from the outside, because of which air suction occurs in weak places and appropriately recent reinstatement. The situation of freezing the valves of the cover when cooled the engine.

For the cover of the cover, try to suck air from it from it if the air does not enter or it comes with a clear force, then the lid is time to change. For the presence of frost, it is checked by the following method, we leave the car to a complete cooling, then we unscrew the lid and look at the valve if they completely in the ice means the problem in condensate. In case of frost, you can try to handle the cover with silicone lubricant or VD.

The last lid I took and she was the most successful:

Here is its reverse side:

There is also another one of the options to combat bad lids - it is unscrewing it in the winter, for free air access in both sides through the thread. But consider that in this case the maximum booster temperature of the coolant will decrease.

Enchanting the cooling system of Lada Kalina

Enchanting the cooling system of Lada Kalina - a frequent problem of this car. There is such a phenomenon under the influence of negative factors, in particular, faults in the functioning of the machine. As a result, the cooling system begins to work incorrectly.

Car cooling system

Why concentration occurs

Water and air are two interconnected elements. If the car malfunction, they cause "storm of emotions" in the cooling system. Usually, the conflict occurs in a car radiator, which entails a lot of trouble. The first thing that the motorists notice is - the car boils. This is the movement in time, and the temperature behind the board and the speed of movement does not always affect this process. Engine overheating is associated with violations in the cooling system. This problem requires an immediate solution.

Most modern cars have liquid cooling engines. The radiator in them is the most necessary and mandatory detail. Often 2 elements are installed in the car, one is the cooling system, the second - heating or stove. To overheat the engine, it is enough to develop one problem, out of 3 existing ones. The most common causes due to which the aircraft system:

  • Thermostat subflinking;
  • lack of coolant;
  • Radiator deliberation.

Check the performance of the radiator is simple: if the stove on Kalina gives hot air, and the main element is cold, it is necessary to change the thermostat.

With a lack of coolant, the situation is complicated. You can reveal this problem by the warm engine. You must open the radiator cork and check the level of antifreeze. If it is not enough, the high probability of leaks is preserved, as a result of which the system is recently. Perhaps antifreeze displaces exhaust gases. Conducted to be a weak circulation of fluid.

The last reason for the development of the problem is an air plug formed due to the suced air. This is due to the lack of sufficient tightness in the highways. Detect flow or find the place of filtration is not difficult. Heavier to reveal the air suction in the stove itself.

Another possible cause of delight is a violation of the integrity of any element. This can lead to the closure of the tray, which leads to work in the opposite direction. To identify the reason for which the system is delivered independently.

Solving the problem of convincing

Experts allocate 3 basic ways to solve the situation.

Option 1. It is necessary to remove the heating hose and open the lid on the expansion tank. Then it is covered with a rag (it must be clean) and blow. When the antifreeze will be released from the place of the extracted tube, the hose must be quickly inserted back and tighten the clamp. It should be said that the cooling fluid is a poisonous, in no case should it be bothered. After the manipulation of the air traffic jam disappears.

Option 2. In this case, it is necessary to heat the engine - this will allow you to lift the pressure. Then the motor viburnum is muffled and the hose is removed according to the first option. Do not touch the tank cover, it is in a closed position. When antifreeze runs out of the hose, it is necessary to wear it quickly and tighten

During operation, caution should be exercised, as antifreeze can be hot

Option 3. How to remove air in this case? After cooling the engine, it is necessary to remove the hose from the tank, which goes to the cooling system. Then it is filled with the coolant and twist the cork. The hose must be placed in an empty canister, and on the nozzle to wear a tube from the air pump. Thus the pressure is made, during this process you need to monitor the level of fluid. If necessary, it must be addressed, but not more than 2-3 times.

How to drive the air if the situation is constantly repeated? You can use any of the described methods, but it is recommended to check all connections of the system for tightness. Thus, Kalina will never be delivered.

What you need to do before you throw out the cork.

First of all, it is necessary to understand why an air traffic jam is formed, for this:

  1. We check whether there are no ochloves in the connections of nozzles, if any, tighten the clamps or replace them.
  2. We check the coolant level in the expansion tank, Kalin preferably keep the level at a maximum or slightly above it.
  3. We check the correctness of the plug operation of the expansion tank, if the plug on the air inlet does not work or with a noticeable difficulty, then it is better to replace it, below I will explain more about traffic.
  4. It is desirable to check whether the radiator of the salon heater is not suitable, it can be made from the salon to remove the right lower sidewalls panels under the legs and feeling the floors and the stove block itself.

Air Cork in the cooling system Lada Kalina Signs, Repair

Any car model is primarily a complex type of technology that consists of numerous nodes and aggregates. Unfortunately, sooner or later one of the elements may fail, since during the operation of the machine, various components are inevitably heated, according to the laws of physics. To prevent strong overheating, in Lada Kalina, and in all other cars, the cooling system is envisaged in which air is capable of forming.

If the air traffic jam in the cooling system of Lada Kalina will not be timely removed, then such a malfunction can output various nodes, and even lead to the engine breakdown. Therefore, car owners must be needed to repair the car at the first signs of breakage. And where can air in the cooling system and how to delete it according to the rules, we will analyze further.

The main signs of the emergence of air traffic

Independently understand that an air traffic jam was formed in the cooling system, Lada Carlovers Kalina could according to such signs:

  1. The heating system of the car will work badly or will refuse to function at all. This type of malfunction is manifested due to the fact that the aircraft that appears does not allow to penetrate the antifreeze or other coolant radiator.
  2. The car will begin to overheat strongly, which will indicate the special indicator located on the dashboard. And explains the overheating of the car with the same air plug, which prevents the free movement of the coolant on a special cooling system.
  3. There are other signs pointing to the occurrence of air traffic jams, so the specialists are recommended to check the condition of all components that are included in the cooling system.

After the cause of the defect will be determined, it should be easily rid of the air in the cooling system as soon as possible.

Even a car owner without experience is able to cope with such a task, if it will definitely be followed by recommendations and instructions from these professionals.

Phased correction problem

Quite often, the car owners notice that after heating the car, the air "leaves" from the cooling system without any action. And it can really be like this, but only if the thermostat in which the cooling fluid passes from the engine is fully functional. Therefore, in the first place, you should check the operation of this item and, if necessary, replace it. And after replacing the thermostat, it is necessary to drain the entire coolant liquid at mandatory and replace it with a new one.

If the thermostat does not require replacement, fit into the phased removal of air from the cooling system, having prepared the keys of the appropriate size in advance for this event, with which it is possible to remove the clamps and protection, as well as a conventional screwdriver to work with fasteners:

  • Removed with fixing spills plastic housing protection;
  • From the top or lower nozzle, the clamp is removed;
  • unscrewed the lid from the expansion tank, and the neck is covered with a clean cloth;
  • Next, you just need to submit air through the rag into the expansion tank, blowing in its neck with all my might;
  • If the actions described above are correct, a slight cooling fluid will be shed out of the nozzle;
  • The nozzle is put on its former place and is fixed by the clamp;
  • The hull protection is set to the previous place.

As you can see, it is pretty easy to remove the air from the cooling system of the cooling system.

Possible malfunctions of SOD, diagnostics

Almost always a cooling function breakdown is enclosed in Tosla leakage. It should be inspecting the car under the hood for possible sublishes. The cause of leakage can be:

  • either a prudent clamp;
  • Either the radiator breakage.

Then, in the first case, the element is replaced, it is easy to do it and not long. As for the radiator, it is better to repair it. There are also no special difficulties here: it is often necessary only to be soles.

The reasons for overheating of this car can also be:

  • thermostat. Its suitability is checked on both pipes: the temperature of the latter should not be sharply different (it turns out on the engine heating). Otherwise, the thermostat is faulty, and Tosola circulation occurs in a small circle;
  • Baby of radiator cells. It is possible to solve the problem, clearing the external part of this item. Often, it is not always easy to do, but other methods, except for cleaning honeycomb manually, does not exist;
  • Fan malfunction. With increasing the level of heating of the coolet fluid, this item must start acting. If this does not happen, check the relay, wiring or the T ° sensor;
  • Air in the system of coolant. Lada Kalina is not insured, including from the so-called air traffic jam inside the system. In general, previous types of breakdowns are eliminated pretty quickly and with them almost everything is clear. In the latter case, it is necessary to understand more detail. The question is how to drive out the air from the cooling system of Kalina - is indeed very important for the optimal functioning of the combination of the elements of this car.

Airlock

If the cooling system is triggered, it is necessary to do the following: When the expansion tank is open, you get the power unit, from time to time squeezing the gas pedal, warm it up until the T ° does not "get" to the red scale. After the "startup" of the ventilation device is still slightly "submit" and then you can turn off the ignition.

If the cooling system is still the winding and the above measures have not led to anything, it should be acting more radically. What needs to be done how to drive out air from the cooling system?

At first, remove the power engine screen (disassembly is made by movement up).

Release the chomut screwdriver, on the heated fitting of the node throttle, remove one of the tubes.

In the expansion tank, unscrew the lid. The neck of the opened capacity is to cover with a clean piece of fabric. Now blow into the tank: from the tube that was removed, there should be a cooler. If it did not work out the above-mentioned container, close the lid, set the handset to your place.

Next - again warm the engine, turn off the ignition. Then the tube again needs to be removed, without removing the cover from the tank, and wait until Tosol flows.

Since this liquid is very poisonous and dangerous for people, drain the coolant is extremely careful. Remember both safety: get the rubber gloves

Track T ° tubes. Consider the fact that changing the coolant is required only when the engine has cooled.

Now the tube is put on the fitting, the clamps are delayed. At this stage, the problem of how to drive out the air from the cooling system of the machine, successfully solved. As you can see, eliminate malfunctions in SOD possible and without the participation of professionals.

Soda Lada Kalina in a certain sense requires refinement.

At the moment there are such methods for its improvement:

  • Alteration. The car is completed with a new thermostat. Thus, the temperature of the toosol will become stable, and the operation of the heating elements of the cabin will come to normal;
  • To minimize the coolant fault, the machine is supplied with a cooler filter;
  • Additional pump in the above system of the power unit. It will force toosol to circulate on the relevant channels is rapidly, which will definitely reduce the engine overheating. And plus - in the cold you will not freeze in the car.

Everything that may be important for a motorist on the above-mentioned topics on Auto Kalina: What is the heating system of Lada Kalina, as well as the refinement of the cooling system, why the cooling system windshields how to drive the air from the cooling system, about possible malfunctions needed by alterations more visually Tell the video presented.

Functional series of elements of the car cooling system

The cooling system system consists of such elements:

  • Sensors - define T ° in certain auto mechanisms; one of the management elements of the system;
  • Pump - makes it possible to circulate fluid in soda; acts in forced mode;
  • pipes - the cooling fluid on them moves;
  • The expansion tank compensates for the volume of antifreeze, since due to temperature fluctuations, it narrows and expands;
  • Radiator - a device discharged heat inspection into the environment;
  • Fan - activates the cooling process by injection; The cooling intensity with it increases;
  • Thermostat is albeit a small but very important element that regulates the amount of antifreeze; Provides a "comfortable" temperature mode throughout the system.

Principle of operation

The cooling system acts in self-regulating mode, which is aimed at supporting the power unit of optimal T °. In the case of a significant increase in oil temperature, the system does everything so that the temperature inside the engine will decrease.

Thus, with the close interaction of the above-mentioned elements, the system is functioning. It automatically specifies the necessary conditions for the inclusion and action of the structural parts than and ensures effective cooling of the power unit.

And if there are any problems with the functionality of the components of this system, it is required to carefully examine the safety of its main components. If the driver is qualified and expressed enough, it can cope with the task and independently. Otherwise, the owner is better not very disassembled with the auto car for help per service station.

Air got into the engine cooling system Basic signs of delight

For a better understanding, let's start with the general principles of work. While the engine is cold, the liquid circulates only on the cooling shirt (special channels in the cylinder block and the Cylinder), without entering the radiator. Circulation provides a water pump (pump).

After the temperature of the coolant reaches a certain indicator, the thermostat is triggered, which opens a large circle (the fluid passes through the radiator). If cooling of the coolant when moving in a large circle is not enough, then the engine cooling fan (air cooling) is automatically connected.

It is important that the system worked correctly, since its efficiency depends on the maintenance of the optimal DVS temperature, the normal functioning of the intra-alone heater (stove), etc.

Please note that the specified faults may occur for different reasons, that is, the engine begins to overheat not only due to the occurrence of air traffic jams, but this probability should also not be excluded. As in any other closed type liquid system, air traffic jams can lead to the fact that the system stops working in normal mode

In this case, the engine overheating risk is also significantly increased, the stove stops normally

As in any other closed type liquid system, air traffic jams can lead to the fact that the system stops working in normal mode. In this case, the risk of overheating of the motor is also significantly increased, the stove stops normally.

  • The main feature of the air traffic formation is the engine overheating. In other words, the temperature grows above the norm, the temperature pointer may rise to the red zone. At the same time, when checking the level of coolant in the expansion tank, no deviations may be detected.
  • Also during the cold season, the driver may notice that the warm air into the salon does not actually do, although the engine is normal. This also indicates that the cooling system may be air.

One way or another, but the air cork does not allow the coolant normally circulate through the cooling system channels. As a result of impaired circulation, certain problems arise. As part of the diagnostics of the engine cooling system, check the level of the coolant in the expansion tank, and also carefully inspect the individual sections of the system.

The presence of leaks of antifreeze or antifreeze, any visible damage to hoses and nozzles is not allowed. You also need to check the reliability of the fixation of the clamps in the places of compounds. It often happens that the air falls into the system precisely because of an uncomfortable or unfastening a protracted clamp.

We also note that air can fall through low-challenging cracks in rubber pipes, while intensive leaks through these cracks may not be. Typically, such cracks are not immediately visible, but a detailed inspection or supply of air into the system under pressure to check allows you to identify distressed areas.

Also during the inspection, attention should be paid to the pump, check the operation of the thermostat and the cooling fan

If everything is normal, then the likelihood that the stove does not work and the motor overheats precisely because of air traffic jams. In this case, it is necessary to take measures and "expel" such a plug out of the cooling system.

Lada Cooling System Kalina Features

The functioning of the engine motor is up to 103 °.

If the temperature indicator is higher, the motor overheats, therefore, the driver with its car expect serious trouble: deflection of the head or (which is even more depressing) - hydrate.

Overheating of the motor is possible in a situation of failure of a cooling element. At first there comes a light phase - with her the motor boils.

The consequences may also be harder. They are characterized by deformation and deflection head of the cylinder block. In this case, the situation is corrected due to the simple grinding process of the surface of the latter.

For the average phase, the deformation of the motor parts of the same valve mechanism is characterized. In the future, serious repairs will be required to be needed: after all, the repair of the block head is pretty financially worthwhile.

The heavy phase is the destruction of a strong heat flux of the piston group. Nevertheless, this defect is not the worst thing that can be waiting. But in case of getting a coolant in the auto-cylinders, the power unit of your car is completely naturally subjected to hydrate. And then maybe the overhaul does not help.

Lada Lada Valina Expansion Tank What is better

Lada Lada Valina Expansion Tank What is better

Improving the cooling system of the practical domestic small polybuga Lada Kalina can be carried out by refining the lid on the expansion tank. Proper cooling of the motor during operation is the key to the durability of all its components. When the lid ceases to correctly execute its purpose, the contour loses efficiency due to pressure fluctuations. Many car owners are interested in how to check the lid of the expansion tank, as well as what better cover.

Incompretable reset of excess pressure causes antifreeze leaks at the junction of rubber pipes with junction discharges in Lada Kalina. All this leads to an increase in the temperature of the coolant, in connection with which the motor is subjected to overheating risk. In order to prevent negative consequences for the engine, due to the impact of increased pressure, the designated tank is an important component of which is the lid.

After stopping the Lada Kalina motor, there is a gradual cooling of the system components. Here the process is similar, but flows back. The air as the temperature decreases is absorbed inside the contour.

The cover of the tank under consideration is recommended to be periodically verified on the absence of scale and other deposits that prevent the normal functioning of the valve, and which is better than the cover, each determines for itself. Therefore, it is recommended to know how to check the lid of the expansion tank.

What problems arise due to a faulty lid?

Folding out the lid on the Bachka Lada Kalina, the owner gets rid of failures in the valve assembly functionality. Before moving to direct consideration of refinement methods, let's talk about the options for modifying the lid, the consequences of its malfunction and methods of verification.

If the valve is very clogged, it contributes to the rapid pressure accumulation in the circuit. Nozzles begin to flow. The system has the appearance of air traffic. The cooling efficiency decreases, which also adversely affects the performance of the Lada Kalina stove. In addition, the risk of failure of pumps and other components of the system is increasing. How to check the lid of the expansion tank?

Check the functional of the lid can be made in this way:

  • by visual review for the presence of rust and other debris (plaque);
  • Pressing the valve must be accompanied by a characteristic whistle (hissing) indicating the output of overpressure;
  • Checking the presence of a plug in the circuit is performed by removing the upper fitting and the subsequent connection to the pump unit;
  • When the air is injected, the testimony on the gauge scale should be at 1.1-1.5 kgf / cm2.

It is easy to understand how to check the lid of the expansion tank.

You can perform the final pressure adjustment by upgrading the Lada Kalina tank cover. To do this, it will be necessary to cut a large spring spring with an eye on a certain amount of the airfield.

Covers on grant.

Photo Grant Wagon

Grant Liftbek Gabarits

First Tank Improvement Option

What is better cover? We purchase the brand cover "FEBI" (code - "02269"). Its value does not exceed 160 rubles. The standard product is disassembled and carrying the valve assembly. The same procedure is carried out with the acquired part.

The native mechanism is subjected to cut, followed by the removal together with the side, allowing to provide a springs center. At the valve element "FEBI" stead the mechanism up to 1 mm. This manipulation provides the correct fit of the valve along with the rubber seal.

Now we collect the item and wind the Lada Kalina on the tank. As a result, we get a cover that is not subject to frost. The process of refinement does not take more than an hour of time, but the efficiency of the product will increase repeatedly.

Classic Cover Modernization Method

Modernization of the lid in this option involves removing and disassembling the component. We take out the rubber seal and the inner assembly (steam of the springs with the valve). We use a screwdriver.

Improvement implies a trimming of two springs. The first of them is to be shortened for one round, and the second is for as many as two. Build the assembly on a well-known algorithm. After that, check the functionality of the upgraded node. The exhaust element of the valve will now begin to open when the magnitude of the value of 1 bar is reached. Earlier, this indicator was 1.7 bar.

With successful refinement, the lid is calmly blocked by his mouth. Such a check allows you to make sure that the free air pass in both directions. If the specified effect is observed, then the correctness of refinement can be stated. Now the risk of cutting the contour is reduced repeatedly.

Let's summarize

The modernization techniques considered by us are quite considerable to owners, now you know how to check the lid of the expansion tank. Here the cost is minimal, and the list of actions is simple and understandable. Identical problems in the cooling circuit may occur not only in Lada Kalina, but also in other models from AvtoVAZ, so the refinement of the lid will be appropriate and will increase the functionality and efficiency of the system. We also recommend deciding what is better than the lid.

Due to such a simple upgrade, the owner reaches an increase in the resource of elements in the cooling system. The final valve allows not only to provide sufficient bandwidth in both directions, but also reliably protects all the product from frost, which is very relevant for the harsh domestic climatic conditions of most regions.

The attention of drivers who are accustomed to serving their car on their own, usually riveted to the engine and chassis. Of course, these nodes are considered major in the work of the entire car. However, equivalent attention should be paid to even so insignificant, at first glance, details like a lid on an expansion tank. What role does this element play in the cooling system? Most drivers do not even guesses that the quality of the cooling of the motor entirely depends on this cover!

What is the lid of the expansion tank

Any driver, even the most inexperienced, knows well why the expansion tank is needed in the car. The coolant is poured into it, and the remaining free volume is intended to compensate for the increase or decrease in the amount of expansioned fluid.

Accordingly, the tank closes with a lid. The cover is mounted on the tank neck in its upper part. Many drivers do not give a large value to the lid - after all it is important to simply maintain the tightness of the tank, and what exactly to close it, does not matter.

Yes, the extension tank cover is a locking element. However, contrary to the problem, the lid has a complex structure and performs special functions.

Lid expansion tank
The cavity of the lid includes a rubber seal and a double valve mechanism

What is the element

In its composition, the cover has as many as two valves. They are designed to protect the cooling system from possible damage due to overheating, moreover, these valves stabilize the operation of the entire system.

If you unscrew the lid from the tank and look at its inner structure, you can see a kind of pressure adjustment sensor.

Cover valve
Two valves are corks of two closing springs

The lid necessarily tightly (without gaps) adjacent to the glands of the tank. For reliability of the compound into the cover includes a sealing gum. Only two valves are built in:

  • The first swelling pressure in the tank;
  • The second pumps the necessary pressure into the tank if the pump is not cope with its work for any reason.

These valves received their names due to the use of high or low pressure: on the vases the first valve is called safety, and the second is vacuum. However, both are at rest while the pressure in the tank in the specified test range.

The lid of the expansion tank in the analysis
The valve mechanisms of the lid on the vases are springs

The driver does not always remove the malfunction in the work of the cover valves. Visually make diagnostics is simply impossible. But breakdown parts of the lid of the expansion tank can lead to serious problems with the motor unit.

Expansion Tank Cover Symptoms

The owners of Russian-made cars know how important it is to monitor the state of all systems in the design of the machine. Even such a small element like a lid of the expansion tank can make a lot of troubles - for example, if the valve mechanisms fail, the operation of the entire cooling system may be disturbed. As a result, overheating of the motor and cylinder jamming. The driver in this case is waiting for expensive repairs.

Therefore, to prevent unpleasant consequences, you need to carefully follow while driving for some features in the behavior of the car:

  • There are smoke clubs from under the hood - therefore, the coolant fell on the split surface of the collector operating on the inlet. To get to the collector Tosol could only for one reason - the safety valve on the lid was out of order;
  • From the stove there is a cool air, and the engine is very hot: this is a sign of failure of a vacuum valve cover. Due to problems in its work, air traffic jams arise in the cooling system, which leads to the overheating of the motor;
  • The breakdowns of the clamps, the gaps of the hoses also indicate that the pressure in the system is unstable. And since the lid of the expansion tank is responsible for the pressure, then these symptoms say that it is time to replace or repaired.
Smoke from under the hood
If smoke clubs are broken from under the hood, it may indicate a malfunction of the expansion tank cover

How to check the lid on the "Prior", "Grant", "Kalina"

It seems that it is enough to unscrew the cover from the expansion tank and inspect its inside to understand the specifics of the problem. However, it is not. For example, in service centers, special pressure pumps are used, which may pump the desired amount of atmospheres. . Creating artificial pressure in the cooling system, the device allows you to calculate the correctness of the valve triggering.

Device for checking extension tank covers
The device for diagnosing tank covers VAZ has a pressure gauge and pump

But the drivers do not have this expensive equipment, so you have to cope with what is in the standard garage. Diagnostics of the quality of the tank cover will be less accurate, however, it will be possible to identify the basic valve faults:

  1. Move the engine.
  2. Unscrew the cover from the tank neck.
  3. Inspect the product for cracks, dents, chips. Maybe the sealing gasket ripped or strongly worn.
  4. In the event that there is no visible damage, the cover should be spinning back and start the motor.
  5. Wait until the engine is warming up to its standard temperature.
  6. Start slowly unscrew the cover from the tank.
  7. If a whistling air whistling is heard during unscrewing (this sound can be compared with the output of gases while opening the lemonade), then the lid is in working condition, as it restrains the pressure in the tank and hoses.
  8. After that, you need to drain the engine again.
  9. Inspect the cooling system nozzles. If they are drawn inside, the lid vacuum valve does not work well, since the pressure in the system is extremely low.

Photo Gallery: Cover Verification Algorithm

Relying the cover from the expansion tank
The lid of the expansion tank can be unscrewed only after the engine has cooled
Visual inspection of the lid of the expansion tank
The working cover should not have extensions, cracks or dents
Cooling system hoses
All nozzles should have an equal diameter, without thickens and compressions.

This is a typical scheme of checking the valves of the expansion tank cover on all models of vehicle vehicles AvtoVAZ.

Checking the lid on the basic models of VAZ

Experienced owners of domestic cars took the rule to change the lid from the expansion tank every two to three years. On the one hand, such attention to the little things greatly simplifies the operation of the cooling system of the internal combustion system, and on the other hand, the lid costs less than 100 rubles, so completely every driver can afford its purchase.

Yes, and the replacement of the lid does not cause any difficulties. Initially, you need to unscrew the cover from the tank on the cooled car. Then screw the new until the stop.

Video: Cover performance diagnostics

Checking the lid on the VAZ 2108/2109

The design of the "eight" and "nine" production of AvtoVAZ allows you to check the performance of the tank cover in one minute. The operation looks like this:

  1. Open the hood cooled after driving a car.
  2. Unscrew the lid of the expansion tank.
  3. Squeeze as you can harden the hanging hose.
  4. Along the way to spin the lid back.
  5. After that, omit the hose.

If the compression place immediately acquires initial elasticity, it means that the valve on the lid is working properly. In the event that it cannot be recovered for a long time, it is recommended to replace the tank cover to a new one.

VAZ 2109.
Work cover of the coolant tank on the VAZ 2109 can be checked with their own hands, just squeezing the nozzle with Tosol

How to check the performance of the lid on the VAZ 2110/2111/2112

The valve checking procedure on the lid is the same as for the previous VAZ models. The only nuance on the VAZ of the tenth family lies in the fact that when unscrewed the cover of the tank itself, the valve mechanism itself can fall out of the cavity of the lid. This is not a breakdown rate, but most likely the wrong fixed element will not work for a long time.

VAZ 2110.
On the Vaz of the Tenth Family, the lid of the expansion tank has the wont to get out of the neck without valve

Checking the lid of the expansion tank on the VAZ 2113-2116

Diagnostics of the coolant tank cover on the latest VAZ models is as follows:

  1. Turn the engine.
  2. Open the hood and start unscrewing the lid.
  3. If after the first actions from under the cover, the characteristic sound of gases ("PSHICT") is broken, then we can talk about the working condition of the valves.
VAZ 2116.
For more accurate diagnostics of the tank cover, it is best to contact a specialized service center.

However, more complex valve mechanisms are installed on modern VAZ models, which is why checking in the garage may not show breakdowns and faults. It is recommended to contact the service center so that the lid is checked on the special pumping equipment.

The lid of the expansion tank on VAZ cars only looks like the simplest element. Inside the cover are located important for the entire cooling system of the valve, which adjust the pressure of the toosol. It is recommended to replace the covers every two or three years - in this case, you can avoid more expensive repair of the remaining elements of the cooling system.

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Thanks to Ingener-Serega for: www.drive2.ru/b/725758/chelling check the cover of the rashir. Because From malfunction of this little things, a lot of grief in the cooling system of any car. Underwear tools, you can only check for overpressure. Itemood "Yellow" Evrodetal "

Evrodetal

Bought expansion tanks (

150r.

) Hose (40r.) and Clamp (20r.). Stuck stub (the tape wrapped on the bolt and stuck in withdrawal, then it turned over, that was not broken from above, it was not broken when the pressure exceeded, and simply so that the bolt flew)))).

In the second conclusion stuck the hose and connected to it

compressor

Through the adapter for a soccer ball.

Test stand

When buying a new lid in the store asked the question: "You have a good or bad)))" I said, give good and bad for tests (then you can return bad things) In short, the lid from the "eloque" was made from the seller's words. Under the bad, the cover with the "rook" and the second cover with "husls".

Cover with land

Cover with guuslyas

Also, relatives removed 2 covers from viburnum, which put in the factory:

Cap with viburnum 2 (factory)

Cover from viburnum 2 (factory) bottom view.

"The pressure in the cooling system should be 1.2 atmosphere (in the technical literature Values ​​range from 0.8 (on carburetor) to 1.2 on the injectors) It is on this pressure that the valve should open - which is very often not occurring (by the way the valve there is 2 On the booming and fence of air, on the fence of air from the atmosphere should be triggered by 0.2 atm)! " About pressure possible nonsense, because Soda is the same.

Cover with "Lord" It worked somewhere in the range of 0.5-0.8 bar - on the carburetor engine will go. (I did not do the photo) ( 1 bar = 1,0197kgs / cm2 or 0,9869 atmospheres )

Cover with "Husls" worked immediately as I turned on the compressor-not "Ice".

Old Eugene Cover Refused to work and Bacheuk began to inflate! I cut off the compressor and unscrewed with "PSHIK". Digured:

View 1.

View of 2.

View 3.

He drew attention to the inner spring, she frightened a bit (the lid 2 years left) a bit blew and collected. The cap began to immediately train the air! - Wear wear)))

New cover "EUROPETAL" Worked within the injector:

Cover Pressure Pressure

All the above covers (who were poisoned immediately and those who were poisoned when reached a certain pressure) always brought the tank pressure to:

Of this

The lid from Kalina 2 (factory) worked within the injector, but a little more than the lid from the "Eugene":

Cover from Kalina 2 (factory)

Now I will check the capability of the cover once every 6 months, in order not to get surprises from the cooling system in the form of burst bits, cracked hoses and other things. At the same time, let's see how much a "good" cover from the "Eugene" passes. Previous passed around 2 years. Although it is definitely unknown when she stopped working fine.

Continued:

www.drive2.ru/l/4515555/

About the lid with viburnum 2:

www.drive2.ru/l/5737847/ Video check

:

From the post:

www.drive2.ru/l/8342029/

Some moments if there is cold air from difflectors: "1. Check the lid and pick up normal: www.drive2.ru/l/8342029/ (You can remove the steaming hose from the Republic of Belarus and drowning it with a bolt. To stick in another hose in the Republic of Belarus and the pump or compressor-create pressure and watch the pressure gauge. With how much it works) 2. On the working lid warm the car for about 5-10-upper nozzles from a large radiator, it should be warm, and the bottom cold-if the bottom is also warm means the thermos does not hold a small circle-system constantly working on a big circle, you need to change the thermos Or a thermoelement: www.drive2.ru/l/5809621/3. Maybe like a familiar pump led under a metal overlay that under the belts Timing 4. The most unpleasant GBC: www.drive2.ru/l/5826562/"

You can not buy a new RB, but simply remove a steaming hose from the old RB, to drive a bolt to the hose. In withdrawal from the Republic of Belarus, serve air compressor. The created pressure will put pressure on the cooler in the system, excess must exit through the plug. Appreciate the plug: www.drive2.ru/l/5737847/

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