Why drive a timing belt on the VAZ. What eats the timing belt

Many owners of the front-wheel drive cars VAZ, after a certain period of operation, managed to face what the timing belt slides to the engine (which happens more often), or vice versa from the engine. At the same time, the edge of the belt begins to braid about the engine details, the waist tensioner roller, Cord threads break. And if it is not noticed on time, at the most inopportune moment the timing belt breaks. If on eight valve VAZ engine The consequences of the timing belt clump are threaten only the engine stopping, then on a 16 valve repair GBC. It turns out in a rather round sum. Now consider the reasons for the crashing of the toothed belt and the ways to eliminate this fault.

Why crap timber rods.

The reason can be both alone and several in the aggregate. Consider them in order.

1. A belt itself can be to blame, or rather, the manufacturer's marriage. A strap having different rigidity in width starts to sail towards less stiffness almost immediately after installation. In this case, the diagnosis in this case is simple, remove, turn over the other party, install and if it starts to crawl into the other direction, the culprit is found. Such a belt is definitely in the pit. Justice is worth noting - now this is found much less frequently. Tip: Always keep in the trunk in the reserve of timing belts and generator.

2. Waterproof bearing wear (pump). When the belt is removed, shook the toothed pulley. The backlash's backlash is unacceptable, so we change, without thinking, still flows soon. If problems started after replacing the pump, then maybe when installing new Detail, poorly cleaned from the old gasket, the block surface of the block and the pump housing became with distortion. It happens that the pump itself is made "crooked", well, there was no turnover.

3. The most common cause is the bending of the stiletto fastening of the tensioner, with an unqualified replacement. "By lettering" moment of tightening nuts of the eccentric roller is only 4.2 kgf / m, and if tightening "from the heart", then the M10 pin can be slightly stolen, and even 0.1 mm of bias will be enough to slide the belt to the side. Straighten the hairpin is practically unrealistic. Alternatively, you can try to twist it from the block and screw the other side. I passed this option. But there is a way better. Described in the journal "Driving". Pictures from there.

Cutting washers are cut out of the tin beer, to size the remote ring installed between the block and the eccentric of the tensioner roller. Cut in half in the form of a crescent, for more thin, or bend and fold for thicker.

After that, installed according to the scheme. Closer to the center of the block (1), if the belt slides to the engine, closer to the edge (2) if the belt crawls outward. When installing, the washers do not fall, I recommend gluing their sealant.

The thickness of the set is selected experimentally. The method is simple and very effective.

4. By the way, the culprit is often a tensioning roller. Now they are made on the single-row ball bearings, and the support surface for the belt is often far from ideal (taper, ovality and even stepbecope). Therefore, the choice of roller should be approached as picky as possible and carefully. The backlash's backlash should be minimal, work surface, at least "on the eye" must be smooth and smooth. Before installing, it is not possible to be lazy and check in the bearing presence of lubrication. How neatly b. Very often on this greatly "save".

5. I repeat a little. There may be several implicit, practically inconspicuous causing, which one of one and define is difficult, but in the amount they fully cope with the belt shift to the side. And here the adjusting washers will be just a panacea.

Many owners of the front-wheel drive vases worries the problem, why eats timing belt? Most often, the owners of the following models of VAZ - 2108, 2109, 2110, 2112, 2108, 2109, 2110, 2112, 2114, Kalina, Priora, Grant (and this problem is found on engines both from 8 and with 16 valves). The general answer to the voiced question is one - the belt skew occurs. And he, in turn, can occur in a number of reasons - the pump is unevenly installed, a poor-quality video, between the roller and the unit installed in the size of the washer (or it is missing at all) and some others. Each of the listed problems is solved in its own way. In most cases, the elimination of reasons can be carried out independently, subject to the availability of appropriate experience and tools. This will save money, and the execution itself repair work Does not take much time and strength.

Causes why eats timing belt

There are seven major reasons all the main reasons why the timing belt eats. To begin with, we simply list and describe them, and in the next section we will tell you how every problem can be solved.

The stud may bend if it is spinning with a moment more than 4.2 kgf · m. Data are relevant for all front-wheel drive VAZ, where this problem is most common.

As practice shows, the latter reason described is most often found. And motorists invented a universal method, with which you can fix the situation.

Methods to eliminate breakdowns

Now list the methods of eliminating these reasons. Let's go in the same order.

1. Belt stretch. First you need to check the level of the stretch and compare it with the one that recommends the car manufacturer (usually indicated in the technical documentation for the machine, can also be found on the Internet). If this value is higher than the recommended, then you need to weaken the tension. This is done using a dynamometric key. If you do not have it, it is better to contact the car service. In the extreme case, you can perform this procedure "on the eye", but with the first to use the specified instruments. Also for this you can use a regular dynamometer and a regular key.
2. Non-quality belt. If on two edges of the belt is different rigidity, then the situation will occur when the timing roller eats a belt with a softer side. You can check this by replacing its right and left side. If, after replacement, the second side will not wear, it means that the belt is to blame. The exit here is one, and it consists in buying and installing a new, better, detail.
3. Wear bearing pumps. To diagnose this problem, it is necessary to dismantle the belt and check the availability of a hollow on the gear of the pulley. If the backlash is, it means that it is necessary to replace the part. Repair bearings are not subject to repair.
4. Pump is mounted crooked. This situation is possible if with the previous replacement poorly cleaned the adjacent surface, and it remained small particles of the old gasket and / or pieces of dirt, but if it happened, then most likely you will understand the leaving the leavches after the fill of antifreeze and start the engine. When installing a new pump (or even old, if it is proper), it is necessary to thoroughly clean both surfaces (including planting Under the bolts), both on the pump itself and on the engine housing and install a new gasket. In some cases, instead of laying under the pump lay sealant.
5. Problems with roller. It is necessary to perform a revision of the roller. It should have a minimum backlash and smooth work surface. To check, you can use a ruler or other similar width. It makes sense to check the presence in the lubricant in the bearing. With her small quantities should add it. If the roller is poor quality, then it is necessary to replace it. Repair the bearing, and even more so the surface of the roller is almost impossible.
6. Damage to hair thread. Two options are possible to correct this situation. The easiest thing is to use the swing with the corresponding diameter to pull the inner thread and / or the dice for pulling the similar thread on the heel. Another option is more work and consists in a complete dismantling of the block in order to restore the specified thread. This method is used if for some reason it is impossible to apply the tape.

   

   Installation washers under the roller

7. Bending Roller Studs. Mechanically correct the hairpin is almost unreal. Sometimes (but not in all cases, it depends on the degree of curvature of the hairpins and the place of its curvature) you can try to turn the hairpin and screw it back, but the other side. If the curvature is small, then such a decision can be crowned with success. However, in most cases use adjusting washers. Consider this item separately, since most car enthusiasts consider this method of real panacea if the timing belt is eaten by the engine or from the opposite side.

Use adjusting washers when crashing a belt



Washings can be made independently, for example, from the housing of aluminum beer cans, tin cans from under coffee or use ready-made factory. The main thing is that the washers are the same size as the remote ring, installed between the block and the eccentric of the tensioner roller. There are two options. In the first use factory washers. Thickness and quantity pick experienced way. The use of this method is ambiguous, since the washers are flat and, accordingly, the plane of the adjacent roller will remain parallel. However, some motorists helped such a method.



1 - If the belt slides to the engine, 2 - if the belt slides from the engine

Another method is to independent manufacture Shab in the form of a crescent. The number and width of the washers are also selected by the experimental way. The use of such washers is more appropriate, because with their help you can change the angle of inclination of the hairpin and the roller so that it forms the normal to form the plane of the cylinder block housing.

The installation of the washer needs to be performed by the scheme shown in the figure. In particular, if the timing belt slides towards the engine, then the puck / washers need to be installed closer to the center of the block. If the belt moves from the engine, then on the contrary, closer to the edge of the block. When installing, the washers are recommended to use, which will hold them from slipping to the side when loaded or without it.

Do not overdo it that the belt does not "go" in the other side, the opposite of the one where he slipped before. The main thing is that the belt worked evenly across the entire width and crashed from the roller.



Installed washers

Finally, I would like to note that in rare cases, the cause of the belt shift in one or the other side and its subsidence can be caused not one, but by several reasons described above. As a rule, the method of using adjusting washers is universal, and can save the situation in even the most "running" cases. However, it makes sense to conduct a belt revision, roller and pump in order to identify shortcomings in their work, and if necessary, replace the listed nodes. It will save you from other problems in the future related to these details.

Such a problem as sliding the timing belt from the place of fixation is often found, and is due to this most often due to low-quality materials The belt itself and its component elements. Below we will tell you about how to avoid a similar situation, and how to prevent the adoption of the unwanted consequences of such a breakdown.

The video shows how the timing belt is slung on the VAZ-2114:

System of the gas distribution mechanism VAZ-2114

It will not be secret for anyone that, after time, any item is extended and will require a replacement, one time is measured by hundreds, and other tens of thousands of kilometers.

The scheme of the GRM device

As for the system of the gas distribution mechanism, and specifically, its belt, then the replacement should be made at the end of its operational period, or if there are visible damage on it.

However, it should be noted that, when, such a problem can happen, as the crashing of the belt, from its place, which in turn can lead to indisposition (wear - approx.) The edge of the belt, which will later be only promoting its wear, break and the next replacement.

We hurry to refress you

VAZ-2114 car, equipped with a volume of 1.5 and 1.6 liters, which may indicate that when the timing belt breaks, pistons with valves do not meet and the fester of the latter does not occur that certainly favorably affects not only subsequent repairs, but also on the wallet of the car owner.

Where is the belt slips and why?

Note! Sliding the belt can both towards the engine and in the opposite of it.

It happens, regardless of how exactly the middle of the gear it was installed, since the belt itself becomes the reason for this, but the elements and mechanisms associated with its work. In order to solve such a problem, you must use the methods described below.

Timing belt

In modern times, the market for automobile spare parts market is increasingly and more often there are facts of fakes and low-quality products.

From above the original timing belt, and below the fake

Specifically affecting the moment with the timing belt, we can talk about its uneven structure, increased elasticity (the ability to excessively stretch - approx.), As well as the presence of significant differences between the two edges (skew - approx.).

Determine the degree of rectinence of the newly installed belt, you can only on the mounted mechanism.

And, if after starting the engine, even minor deviations will be observed - then the reason in the belt.

The belt is dressed and stretched

water pump

Racing the timing belt can happen due to the back of the pump (pump - approx.). It is enough just to take it with his hand for the working surface of the gear, and if at least the slightest backlash is present, the node must be changed. In this case, check out the material: ""

Lects on the cylinder block from the GDM mean that the pump failed

Tension roller

The next element that must be diagnosed when crashing the timing belt is a tensioning roller.

Despite the fact that it would seem like a simple detail, the deviation from its performance can significantly affect the correctness of its work as a whole. If we talk simple words, the video curve will not be able to provide a strap rectilinear movement , wearing and leading to him.

The scheme is visual and understandable.

Another reason for discussions on the popular forums about the belt injection towards the side becomes the installation of rollers of different samples, because the analog has another, several modified design.

Difference rollers

The difference between these two spare parts is in the presence of a different form of a different form made of metal, and on the new it is made of plastic.

Therefore, as the theory shows, the spare part made from plastic causes far less friction than an equivalent of metal.

Rollers of two types.

Other ways to adjust the roller

If you look from the standard and proper work of the timing belt, then the tensioning roller must be exactly the middle of the pump and camshaft. However, some owners of the VAZ-2114, in order to avoid climbing the belt, thus the belt, getting the greatest bending in its upper part more fixed in its place.

All tensioning roller components for VAZ-2114.

Not a tricky way to adjust the belt

There is another simple way that helps the owners of the VAZ-2114 avoid the location of the belt, by adjusting the position of the tensioning roller.

In order to fix it in this position, you need to make a blank in the form in advance. hemisphere from aluminum (It will be good for the aluminum bank - approx.), which must be fixed between the remote ring and the cylinder block.

Such a need may occur only in the case when the remote ring has differences in its thickness. To carry out its measurements, you can independently using only the caliper.

Distribution and crankshaft

New camshaft gear

Also, judging by the numerous reviews of "our tubers", eliminate the facts of slipping the timing belt can after replacing the gear of the distribution and crankshaft.

However, such a procedure can bring the result if the car mileage on old parts is at least 100 thousand kilometers. Otherwise, such a replacement may not bring the desired result.

Rust on the crankshaft gear

The crankshaft gear was closed

This situation arises as a result of the absence of dirt protection. The gear rust and begins not to work correctly.

After any work

After working with the timing belt, many motorists and car service masters advise to watch in what condition it is, periodically opening the hood and diagnosing its condition. But at the same time it is necessary to remove plastic protection!

Because it is in this way that you can notice the emerging defects, the facts of slaughtering the belt and other problems, which will certainly be favorably affecting the state of the gas distribution system as a whole.

conclusions

As you were convinced, the reason for the crashing of the timing belt on the VAZ-2114 can be solved only by replacement, so choosing a similar spare part in the store, it is best to pay attention to the proven manufacturer who has established itself only from the best side.

Replacing the timing belt (gas distribution mechanism) for eight valve engines The front-wheel drive cars, at first glance, does not represent any difficulty. However, very often new belt Begins to go off the camshaft gear. At the same time, the edge is erased about the tension roller bourge. Like any other repair of car VAZ, these problems can be solved in the garage, without the help of a hundred.

The first is the reason that the belt is driven to the block, it is his hauling. If the stream is not homogeneous, he will also begin to shift on the gears of the timing of timing. Check if the quality of the product is guilty, easy. If it goes to one side, and after his turn, it begins to drive off in the opposite direction, he clearly asks for replacement.

The belt can shift and due to the poor-quality tensioning roller, which can entail the knuckle of the valves. In most rollers on sale, a single row bearing is used. With the slightest backlash in it, the working surface of the roller receives a certain slope relative to the axis of rotation, and it slides towards tilt. Cone, or oval working surface of the roller, whose body is cast from plastic, also contributes to slipping. Therefore, when buying a tensioner roller, you need to choose them with a metal case, or with a two-row bearing from the famous manufacturer.

Installation of a water pump with a breakdown relative to the cylinder block due to a large amount of sealant under its gasket and uneven tightening of the fastening bolts, as well as a large backlash in the pump bearings, also lead to the timing belt displacement during the operation of the motor. If the water pump is changing at the same time, the work must be made carefully. Remembering the consequences of the incorrect pump installation.

The stylus of the tensioning roller is not tightened to the head of the block, can cause the timing belt shift and its wear. The same consequences also leads the drawn thread of the studs in the body of the GBC (head of the cylinder block). When replacing, for these moments you need to pay attention. To tighten the nut of the tensioning roller, you need to use a torque wrench, adjusting it to the effort of 42 N.M.

Motors with a mileage of about 100,000 km. And more, as a rule, the gear of the timing drive on the crankshaft shaft is worn. The wear of the gear, in turn, leads again to the displacement of the timing. When the belt begins to drive to the cylinder block due to the worn out gear of the KV (crankshaft), it happens even that the edge protects the head of the bolt of the oil pump bolt, located nearby. With higher the specified runs, you need to be prepared for replacing the gear along with the belt.

Such difficulties can expect when performing such a simple replacement operation. You need to be prepared.