The gas distribution mechanism is one of those that determine the performance vehicle. If you do not pay attention to the verification of its performance, then it may later happen so that he simply turns out. All about when you need to change the timing belt and the chain that you need to do in the process of shift and how the timing belt is replaced with your own hands with the video you can learn from the article.
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We change the timing belt
So, how does the timing belt be replaced and how often does it be done? Read further.
Replacement frequency
The first question that interests many motorists is the frequency of replacing the timing belt. After how many thousand kilometers, this component changes? For the correct answer to this question, it is necessary to take into account certain nuances. First, it is the quality of the strap itself. It has long been known that the domestic automotive market is sisite with fake products and counterfeit, so sellers often offer consumers not the original. As you can guess, such parts are not particularly allocated to durability and reliability, as a result of which the car owner has to change the element much more often.
It should also be noted that the frequency of parts directly depends on the manufacturer. On average, the interval at which the timing belt replacement is carried out, ranges from 60 to 70 thousand mileage kilometers. It is with such a mileage that the strap is usually changing. Another factor that should be considered is the age of cars. If your vehicle has been released 20 years ago, it is necessary to take into account that the overall wear of all nodes and mechanisms occurs faster as a result of aging the design of the machine itself.
After how many mileage kilometers, in this case, the component changes and how often does it need to be done? In practice, this procedure is carried out beyond 35-40 thousand km of mileage.
Another thing if you purchased a car from hand. In this case, the question of when changing the timing belt is impossible to postpone.
Algorithm of action
If, after how many km run and when changing the timing belt, everything is clear, go to the next question. How to change the timing belt - this question is no less relevant.
Consider general instructions By changing the component.
- First of all, the battery is turned off. The generator drive strap should also be turned off, and the piston of the first cylinder must be put in the position of the upper dead point.
- Then the spanner is necessarily unscrewed screw tensioner roller, after which the roller itself turns to attenuate that the tension indicator is reduced.
- Next, you should dismantle the item from all shafts - from the distribution, roller shafts, as well as a pump shaft.
- To dismantle the drive shaft fasten screw, the crankshaft should be fixed so that it cannot be checked. Typically, the crankshaft is fixed using a powerful screwdriver. The essence is to disassemble the plug, while the pulley should not be turned.
- Using a wrench, you will need to unscrew the screw that fixes the crankshaft drive. The pulley itself is dismantled, after which it is necessary to pull the component drive washer with extreme caution. The strap itself is removed. Installation of the element occurs in the reverse order.
Does the pump be changed when replacing the timing belt?
In general, how to change the timing belt - the question is quite time-consuming, requiring certain skills. Consider some more specific nuances. As often, after how many km run, when changing the timing belt is these issues of frequency - the personal matter of everyone. But you need to remember that together with the strap should be shifted and other components.
Sorry, currently there are no accessible surveys.
In practice, almost all experts today replace the strap of the gas distribution mechanism along with POMPEY. This is due to the fact that for the normal functioning of the entire mechanism, it is desirable to establish new auxiliary parts. Actually, we also recommend replacing the pumps together with the change of the MRM component.
Do you need to change videos when replacing the timing?
After how many km run, you need to change videos? The answer is unambiguous - the rollers change together with the strap. It is necessary to do this for the same reason why the pump changes together with the main component. To once again I did not have to climb and disassemble the mechanism, it is recommended to install new details.
We change the chain timing
Now consider all the nuances that relate to the chain of the gas distribution mechanism.
When should I change?
The first thing that interests us is when changing the timing chain. In contrast to the previous case, in foreign cars equipped with chains, this procedure is not so often. But again, everything depends on several nuances here. The first is the overall condition of the mechanism. If certain elements need an urgent shift, then this may affect the resource chain as a whole.
As a rule, there is no resource for service in km. In most cases, it is installed for the entire service life of the car, after which it is simply utilized. However, in Russia and the countries of the former CIS, vehicles rarely go to scrap and are commonly used to "victorious", respectively, here they go much more than their service life. Domestic motorists usually face the need to change the chain after 250-300 thousand km of mileage.
Tools and replacement stages
Consider the general instructions. Video is provided below.
Prepare the tool:
- set of heads;
- two screwdrivers;
- a set of keys;
- jack;
- dynamometer key;
- sealant.
Let's start replacing:
- Regardless of the design of the vehicle, the air conditioner, the generator and GUR are dismantled. It is also necessary to remove these devices. After that, the sensors of the crankshaft and distribution pulleys are removed. The crankshaft disc should also be dismantled.
- The starter is turned off and the screws that are attached to it are turned off. The device is removed.
- It is necessary to unscrew all the screws that fasten the oil tray, after which it also needs to be removed.
- If the right engine airbag prevents access to the chain, it also needs to be dismantled.
- After that, all bolts fastening the front cover of the chain are twisted with the keys, and the lid is dismantled.
- When the lid is removed, the hydraulic and guide should be dismantled. To do this, unscrew all the necessary screws for this. The piston of the first cylinder is set to the NMT position. All tags on pulleys and chains should match. The old chain is removed, after which the new one is installed. Do not forget about the labels.
Now you know how to replace the timing belt and chain.
Video "Replacing the Gramp Chain"
In this video, see the process of replacing the timing chain on the example of auto kia.
What is this service?
The drive belt connects the generator, the steering hydraulic power supply pump and the air conditioner compressor with pulley crankshaft Engine, the belt transmits power from the engine to these nodes. In the absence of this belt, the battery will not be charged, and none of the electrical components of the car will work. Due to the high temperature of the engine, with time the belt can crack and break. When breaking the belt, the steering wheel will be difficult to rotate, and the control of the car will become dangerous. In some cars, the cooling system pump is driven by a drive belt. When the belt is destruction, the cooling fluid circulation required to maintain the proper engine temperature is disturbed. The engine will overheat, which can lead to its serious damage.
Drive belts are an important part. power plant, and how any part of it is susceptible to wear. To avoid problems when working a car, replacing the drive belt Must be committed immediately after detecting suspicion of malfunction. Otherwise, it is possible to fail by many aggregates up to their breakdown, and as a result, expensive repair.
Drive belt functions
Depending on the car model, several drive belts can be used in it. Their main task is to move a large number of aggregates, among which the generator, compressor and steering pump are the most important.
Usually the driving belt malfunction does not lead to an immediate stop of the machine, most likely you will be able to get to the house or a hundred. In this case, it is impossible to postpone the repair, because in this case the generator will not work, and the cooling system will not be able to remove heat from the engine.
How to replace the drive belt?
If you have the necessary skills, you can perform such a procedure yourself. To do this, you need to read the documentation for the car, buy the necessary equipment and make a replacement. Naturally, this requires certain skills, without which it is better to trust this business professional.
Relief belt replacement price More than affordable, so it is easier to cause mechanics and make more useful things. If you do not know when this procedure was last made, then before, inspect it visually for the presence of defects, it may be at all and is not required. Specified in the operating instructions for the vehicle - you should not imply this service.
Keep in mind
The car can be equipped with flat or wedge drive belts. Flat belts may be one or two. Most modern cars have only one belt, which brings all engine attachments. If the car is equipped with wedge belts, they are usually four pieces.
The mechanic must check the condition of the drive belt when replacing motor oil. If you hear a squeezing sound from motor compartmentMost likely requires adjustment or replacement of drive belts.
How important is it
The break belt can damage the important parts of the car and expensive repair. Therefore, as soon as you notice the deformations, breaks, cracks or other belt defects - it should be replaced immediately.
The main reasons why it happens
- Whistle under the hood from drive belts
- Power steering does not work (torn strap)
- The fault indicator is on rechargeable battery
- The engine gets very hot
List of basic works:
- Check the belts for cracks.
- Remove and replace damaged straps.
- Examine rollers and bearings.
A modern car is a technically complex device that can work in difficult conditions. Unfortunately, technical progress still does not allow to make eternal things, and the car, like other devices, requires periodic service.
This is especially characteristic of its main mechanism - the engine. It has a huge number of moving parts, which weathered over time. One of these parts is the timing belt. To replace this part, it is not necessary to contact the service at all - you can do everything with your own hands.
Selecting a belt timber
To the belt served for a long time, it is not worth saving on it and buy an explicit Chinese fake. It is important to approach the issue of choice of spare parts with all seriousness. Today on the market you can find solutions from domestic and foreign manufacturers.
The list of manufacturers is quite wide, but the most popular models are regularly offered by CONTITECH, Gates, Bosch and Dayco, which have earned a lot of flattering reviews.
Manufacturers
Perhaps the most authoritative manufacturer is considered to be Gates. The company is based in Belgium, in its activities there is a production of various highly specialized equipment, as well as drive belts.
Today Gates delivers their belts to the conveyors of automakers with world names. As usual, the price is this case Matches quality - GATES solutions are noticeably more expensive than most others.
CONTITECH, located in Germany, in turn, is famous for the products "of this german quality" Many details of this manufacturer put auto hydriants on their cars during their assembly. In addition to the timing belts, this manufacturer also has pneumatic suspension, drive mechanisms and other details.
Finally, Italian Dayco specializes in bearings, rollers and drive belts.
Official or unofficial belt to buy?
The safest way to buy a high-quality timing belt will be a purchase in the official service. As an additional bonus, the installation is very often produced in the same place. Unfortunately, this option turns out to be at the same and the most overhead.
It is important here to know that among official services there is a practice to specify a spare part in the directory under the brand of the manufacturer of the machine, and not the part itself. Take as an example branded timing belts for car Chevrolet. and Opel.
In independence from the real manufacturer of the part, it will be under the GM brand, although the spare part will actually be at the Gates plants.
With such a situation, almost every car owner faced. How to check the timing belt? It is enough to remove the item on your own and look at it marking: it is produced by GM, Audi, etc. by directory, but on the marking, for example, CONTITECH.
The minus of this approach becomes visible if compared the price with the same model under its brand in the market. As a rule, the difference with the service turns about 1.5 times. At the same time, there is absolutely no difference. That is why it is difficult to say how much the timing belt is - it all depends on the manufacturer.
However, some drivers adhere to an alternative opinion: they believe that for original spare parts The best products of this or that manufacturer takes exceptionally, and everything else enters open sale in the form of a kind of "markdown".
Practice shows that the original and non-original timing belts serve approximately equally. Thus, it will be enough to know the factory model details so that after purchasing it already immediately and not overpay in the service.
The only moment: to buy must be required at the proven dealer, since otherwise the risk of running into a low-quality counterfeit. Consequently - brim belt break It can happen much earlier with a much more likely.
So, what is the timing belt better? Designed for your car and purchased from a reliable supplier.
Replacing the timing belt. Video:
Terms of replacement timing
To begin with, we will understand when changing the timing belt. The spontaneous breakdown of the timing belt very often turns into the valves beaten. They require very expensive repairSo follow the status of the belt is required quite carefully. Specific planned replacement time depend on specific model The car is most often indicated in its technical documentation.
Many are interested: through which mileage to change the timing belt? Masters recommend replacing when ordering 50-80 thousand kilometers.
If the car was bought from hands and the owner does not know when the replacement was made for the last time, you can check the item to wear visually. Traces of active use are quite clearly traced in the form of small cracks on the housing.
Foreign autocontraceans recommend changing timing belts on their cars when running in 120 thousand kilometersHowever, domestic dealers call other numbers: 90, maximum 100 thousand kilometersWhat is associated with severe operating conditions in our country.
If there were cracks on the details on the details, you should not panic and assume that the break will happen immediately, it's worth moving from the place. At its heart, the belts have several thin rods from the metal, which withstand significant shock loads and increase the work period of the part.
If the belt becomes weaken, the motorist will quickly feel it - the noise from the motor will grow noticeably, the car becomes harder. Yes, and there is a risk in practice to check whether the valves are bent when the timing belt is closed.
Often car manufacturers are recommended together with the replacement of the part itself to change the timing belt tensioner. This option is preferable because all the above procedures are quite laborious one by one, and the wear of specific parts is sometimes not visible to the unarmed look. That is why many manufacturers moved to the production of sets of belt and rollers.
Replacement procedures
We now turn to how to change the timing belt. Replacing the part consists of three main stages. First of all, you need to get to the detail. After weaken the tensioning device and only after that install a new belt. However, about everything in order.
How to get to the timing belt?
The algorithm of action is as follows:
Weakening of the tensioner
In order to remove the old timing belt, it will be necessary to weaken the bolts that fix the device adjusting the bolt tension. To unscrew them completely does not make sense - it will be enough to unscrew the tensioner, after which it is enough to turn the bolts and fix the tensioner.
We can use it at the same time check the pulley of the tensioning device for wear. Visual inspection includes checking for cracks and dents, after which it is necessary to vain the pulley.
If the process is heard or crash in the process, it means that bearings are worn or at least weakened. In this case, you should additionally install a new pulley of the tensioner.
Installation of a new timing belt
The installation of the timing belt itself is quite simple and it is unlikely to cause someone complexity. First of all, the belt should be removed from the stars.
If the tensioner was weakened, he can easily jump. Sometimes the belt can be stuck, but the problem is solved if you pick it up with a screwdriver.
At the second stage, a new belt is installed. Most often in the user manual, it is written in detail how to pull the timing belt. The exact procedure with all tolerance varies depending on the car brand. This is especially important for the crankshaft pulley fastening bolt, it has the highest tightening point.
Replacing the timing belt on the prior. Video:
Belt or timing chain
Many doubt that preferred: chain or timing belt? Both options have their own advantages and disadvantages. Consider to start the advantages of the chain:
- higher resource;
- high resistance to external damage: The chain rotates in a closed space, it is not afraid of temperature drops, moisture or dust, while sometimes in the winter it happens that the timing belt was broken precisely because of the rapid heating-cooling;
- the possibility of more accurate adjustment: On the chain of the timing tag, it is possible to set more precisely, so the shaft will rotate with due force, the valves will work more accurately, will not be roasted;
- more quality lubricant: During operation, the timing chain is constantly in oil, while the belt works in a dry atmosphere, which negatively affects its resource;
- The chain is better withstanding high revsIf the tensioner works in normal mode, it will not jump forward.
Replacing the timing chain
It remains to note such a moment as the replacement of the timing chain. You can say right away: it does not differ anything different from the belt replacement algorithm. The main complexity is the preparatory operations with which you can get to the desired part. On average, it takes several hours, while immediate replacement is a few minutes.
So, it is quite possible to cope with the replacement of the timing belt. Of course, this procedure is not fast, but quite accessible even to beginners.
The main thing is to stock up the appropriate tool, as well as the user manual for the car. Some things are unique for a particular model.
For example, how to pull the timing belt it is written exactly there. Remember that it is worth doing something once, and the next everything will be much easier.
More than anything simplest and effective was not invented, to transfer torque from the crankshaft to the rotor of the generator than the belt. It would seem that the rubber with the polymer threads is special in this piece of rubber? But the gap of this at first glance is a minor element entails not only the impossibility of charging the battery and de-energize the many nodes of the car, but also the possibility of a complete stop of the machine. Since the charge of the battery is mainly designed to start the car, and the functioning of the entire electrical network provides the operation of the generator. To avoid such nuances, you should know the main types of this product, the resource of its service, possible signs indicating its wear, and how the generator belt is replaced with their own hands.
A variety of engines structures led to no less species, drive belts of attachments of attachments and their correct location.
For better contact with knots, they are made of various forms of the inner surface and are divided into three types:
- gear - products with a variety of transverse profile pitch with high accuracy of the gear ratio;
- polyclinic (streams) with longitudinally located ribs with greater reliability;
- wedge - trapezoidal sections, where the workers are the sides, not intended for the opposite bending.
For each of these species, respectively, manufacturers recommend and lifetime, which can vary within 50-70 thousand kilometers of car run.
Different cars - different installation scheme
In earlier models of machines, a direct connection of the generator drive with a pulley of the engine was used without any bends, but in modern car Often use a belt transmission to supply torque to drive several devices: air conditioning, pump, air conditioning compressor, generator and other units. And running between these nodes belt, can write fancy configurations and bends, this pattern is called - the scheme proper Installation. In a stock car enthusiast, this drawing should always be at hand, so that if you happen on the road, do not suffer, the foreform, remembering how to replace the generator drive belt. Well, naturally, it is advisable to carry a spare kit for every unforeseen case. 
Signs indicating belt wear
Before losing the methods and methods of replacement, let us touch the possible signs that indicate that this time approached:
- with an external inspection, when the engine is turned off, the loss of elasticity, cracks, small breaks and splashed sides are observed, a clear sign of close failure;
- weakening of the belt tension, due to its stretching or breakdown of the tensioning roller;
- a noticeable whistle when the engine is started, increasing the revolutions or turning on the electrical appliances, the reason may be covered in a bad belt tension or jamming of one of the drives involved in the scheme. This can be both a compressor or generator drive, and the failure of the air conditioner clutch bearing or the tensioning bearing;
- the appearance of the signal on the sensors indicating the decrease in the charging of the battery or the operation of the generator itself.
We should not forget about the planned replacement of this product within its service life.
Options for replacing the generator belt
For work, when the generator belt replacement is required, no special skills and knowledge are needed, it is impossible to call such work simple, but there is nothing superordinary in it. Initially, you should disconnect the mass from the battery, and figure out which parts, protective covers, or other nodes prevent the access to the belt and the generator.
If the generator drive is directly connected to the motor shaft pulley, then everything is very simple here, since in this case the stretch is made by the fastening bolts of the generator itself, plus an additional locking bolt. Freeing the space for free access to the belt and the generator, the above-described bolts are unscrewed, and the belt tension weakens.
Watch the video on the topic:
In another embodiment, where the functioning of not only the generator, but also air conditioning, pumps and other nodes depends on the belt, the work on replacing the generator belt is slightly complicated. May have to take off front wheel Protection of the wing and crankcase to access the belt, the tensioning device and the wires involved the aggregates.
After removing all interfering details, weakening the belt:
- if the tension occurs due to the roller, we weaken the bolt or nut locking roller;
- if this function performs a spring tensioner, the same result is achieved by simply affecting the roller, in the desired direction.
Having removed the belt preferably to hold if his condition causes doubts, then replace it. Also inspected the belt, it is worth paying attention to the nature of damage, and find out why they were formed. Often, the failure of various mechanisms can provoke its wear and gap.
It will be necessary to compare the old and new belt: the length, the width of the teeth (streams), etc. There are precedents of incompassions for some parameters, it would seem that the branded product.
Installing a new belt should be held in the same sequence and on the existing location scheme for a particular car.
Before installing:
- - Check the bodies of pulleys and parallelism of the axes of rotation. When rotating pulleys in different planes, the service life of the drive belts is significantly reduced.
- - Periodically lubricate moving parts of the equipment, check the state of bearings.
- - Ensure that the grooves on the pulleys have the same dimensions and are designed to operate the belts of one profile.
- - check the working surfaces of the pulley for mechanical damage; Remove rust, dirt or accidentally falling lubricant.
- - Make sure that there will be heat removal during the work of the belt.
After all the above conditions were respected, you can go directly to the installation of belts on the pulleys:
- - In the case of multiple pulleys, do not use new and previously installed wedge belts at the same time, since the load between each of them due to the stretch will be unevenly distributed, and this will significantly reduce their service life and can lead to a breakdown of equipment parts. Do not install wedge belts different manufacturers and different brands.
- - Adjust the engine position to wear a belt on the pulleys without effort.
- - First, set the belt to the lead pulley and only then to the slaves.
- - Do not use levers for dressing a wedge belt to the pulley, instead try to slowly scroll through the pulley itself.
- - After installing the drive belt, check its tension. It will be correct to be considered a minimum tension in which the belt will not slip during the first five minutes of operation at full load (or for the next few days).
Periodic prophylactic examination
For normal conditions and proper attention correctly selected quality drive belt Able to work for several years. This requires regular prophylactic equipment inspections. The frequency of such inspections depends on the degree of responsibility of the node, the stiffness of the operating conditions (large torques, large transmitted power, high speed of rotation), conditions ambient, duration of cycles of continuous operation, convenience of access to the verified node.
The longer you use your equipment, the more accurate can be determined when you need another inspection.
Drive mechanisms involved in the responsible node / equipment, or drives operating at high speeds and heavy loads, frequent stops and launches, high temperatures, need to be examined for approximately once a month and once in one or two weeks for critical assembly.
Complete termination of the equipment and a thorough check of the condition of drive belts, bearings, pulleys and other parts is desirable to be carried out every 3-6 months.
With the appearance of extraneous noise, the inspection must be made immediately!
Tips on regular prophylactic inspection of drive mechanisms:
- - Check the condition of the protective wall of the drive mechanism for the object of breaking, the presence of damage; Check if its belt is hurt when working.
- - provide free access to the drive mechanism, do not allow dust or dirt clusters both with external and inner Protective wall, as this can lead to an increase in temperature, and this will affect the duration of the belt.
- - Also, make sure that oil or lubrication drops do not appear on the protective wall, and if it happened - wipe the wall. This may be the result of laying an excessive amount of lubricant into bearings. The lubricant onto the drive belt will result in the belling and strap deformation, to its premature failure.
- - Make sure that the fastenings of the engine base and the adjusting bolts are tightly twisted, and the openings of the attachments or salazzas are clean and slightly lubricated.
- - Check the condition of the bearings and the presence of sufficient lubrication in them.
- - Finally, check the power of the belt tension, sroping the pulleys by hand two or three times. If the belt tension is too strong, its duration will be significantly reduced. If a wedge belt is not tightened enough, it will slip in a pulley groove, which will lead to an increase in temperature. If the synchronous (flat gentle) belt is not tightened enough, it can jump through the teeth (characteristic noise) will appear) and quickly will be in disrepair.
The temperature of the wedge belt varies from -20 ° C to 70 ° C, a synchronous belt from -25 ° C to 100 ° C. Exceeding the specified temperatures will result in cracks on the belt surface and make it unsuitable for further work.
