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Installing a chain on a VAZ 2107. Changing the timing chain and tensioner, signs and replacement interval

17. Remove the bolt from the hole in the cylinder block and remove the timing chain tensioner shoe.

18. Using a 10 mm wrench, unscrew the limiting pin and remove the timing chain.

19. Using a puller, press the sprocket from the toe of the crankshaft.
20. Check the condition of the timing chain links. The rollers should not have chips, cracks or other mechanical damage.

Installing a timing chain on a VAZ 2107 car engine
1. Install the sprocket on the toe of the crankshaft.
2. Check the alignment of the marks on the cylinder block and the crankshaft sprocket.
3. Lubricate the new chain with engine oil and place it on the crankshaft sprocket.
4. Install the timing chain stop pin.
5. Install the sprocket with the chain on the auxiliary drive shaft according to the previously applied marks, tensioning the drive branch of the timing chain.
6. While holding the sprocket from rotating, without tightening it, tighten the fastening bolt.
7. We hook the timing chain with a wire hook and lift it to the camshaft.
8. We put the chain on the camshaft sprocket, and the sprocket on the shaft, ensuring that the marks match.
9. Without tightening, tighten the bolt securing the camshaft sprocket.
10. “Charge” the timing chain tensioner and, having installed it in its original place, “discharge”
11. Turn off the gear and turn the crankshaft two or three turns, paying attention to the coincidence of the marks. Otherwise, we repeat installing the timing chain on the VAZ 2107 engine again.
12. If the marks coincide, engage first gear, tighten the sprocket mounting bolts and lock them by bending the petals of the lock washers.
13. Tighten the cap nut of the timing chain tensioner (see “Timing chain tensioner - replacement”).
14. Installation of all removed parts on the engine of a VAZ 2107 car is carried out in the reverse order.
15. On a VAZ 2107 car with a carburetor engine, we check and, if necessary, adjust the ignition timing

Hi all! I dedicate this post to the owners of the domestic automobile industry, or more precisely to the owners of the VAZ 2107, if the time has come to replace the timing chain of the VAZ 2107.

And so they began. To make it more convenient to change the chain on the machine, first remove the cooling radiator (you don’t have to remove it), as well as the valve cover of the head. Now we need to align the mark on the camshaft gear and the casting on the bearing housing. Next, loosen the generator mount and remove the V-belt, unscrew and remove the water pump pulley.
Remove the camshaft chain tensioner. Now you need to unlock the camshaft sprocket bolt and remove the chain from the sprocket, as well as the crankshaft pulley itself.

Using any 10 mm wrench, unscrew the three bolts securing the pan to the front cover

Now you need to remove the front cover, after unscrewing three bolts and six nuts

Next, remove the tensioner shoe, having previously unscrewed the nut with a 17mm wrench

Unlock the washer of the oil pump drive gear and distributor and unscrew it with a 17 mm wrench

We remove the bolt and remove the gear along with the camshaft drive chain. Don't forget to unscrew the limiting bolt with a 10mm wrench, otherwise it won't allow you to remove it.

Well, in general, here is the order of disassembly. And I almost forgot to say that it is better to immediately change the small sprocket on the crankshaft, since it is often very worn out and will quickly “eat” it when installing a new chain. Assembly is carried out in reverse order. After installing the chain, press the tensioner shoe and tension the timing chain. Naturally, after assembly, you need to check that all installation marks match (the crankshaft sprocket and the mark on the block, on the camshaft sprocket and the bearing housing.

Finally, you need to charge the chain tensioner and install it in place and tension the timing chain. Adjust the ignition timing by manipulating the distributor.

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After a certain mileage, it is necessary to replace the timing chain on a VAZ 2107. Most owners of this car do it themselves, despite the fact that the process is labor-intensive, physically difficult and requires certain skills. The chain must be replaced when the pitch between its links increases. Purely technically, this manifests itself in interruptions at idle. Having noticed such a phenomenon, you need to examine the circuit on board. If the bearing mark matches the corresponding one on the timing sprocket, and the pulley mark is lower than the one on the engine cover, it’s time to change the chain itself.

This can also be caused by cracks in the brush or chips in the bushing, even if the chain is not stretched. Neglecting this step may result in a toe, guide rail, or shoe corner breaking off. And even if distortions appear on the engine teeth, elongated chain links can lead to more serious damage.

Replacing the timing chain on a VAZ 2107 with your own hands can be done in the right and not entirely wrong way. To avoid mistakes, let's consider each of them.


How NOT to do it

The method is, of course, fast, but categorically unreliable. It is attractive because you don’t have to disassemble the engine. Both chains are disconnected: both the old and the new, after which they are collected into one long one. A “crooked starter” spins the chain until a new section takes its place on the engine. It is disconnected from the old one, closed and tensioned.

The bad thing is that this procedure does not make it possible to replace the tensioner shoe and lower sprocket, and in most cases they need it. And the strength of the chain itself is questionable after that.

Dismantling

The engine will have to be largely disassembled, but everything can be done efficiently, reliably, and you won’t have to return to the issue for a long time.

  • The cover is removed from the cylinder head;
  • The crankshaft is rotated until the marks on the housing and on the camshaft sprocket converge. In this case, the mark on the crankshaft should coincide with the mark on the camshaft cover;
  • The lock washer on the bolt fixing the camshaft sprocket is bent (a hammer and a strong screwdriver/chisel will help);
  • The fourth gear is engaged with the handbrake at the same time, the bolt is loosened, and the damper is released from the chain;
  • Behind it, the tensioner shoe is dismantled;
  • Now the stop washer on the sprocket of the additional units is bent, the corresponding bolt is unscrewed, and the said sprocket is removed;
  • Afterwards, under no circumstances should you turn the drive shaft: disturb the ignition setting;
  • The stopper pin is rolled up, followed by the camshaft star retaining bolt that is finally twisted. To remove it, you will have to lift the chain a little. Then it goes down and is removed from all the stars. At the same time, the one that relates to the crankshaft remains in place: you need to check on it whether the marks on it and the cylinder block have moved. If they are separated, the crankshaft rotates until they are aligned again;
  • In some cases, the star of the auxiliary units gets stuck. You will have to move it using a pry bar.

Installation

Before installation, do not forget to make sure that you have purchased a high-quality chain: its deflection should be within 7-10 mm, and all links and bushings should be hardened. If even only one of the elements is considered “raw” by you, it is better to choose another chain: the one in front of you will very soon also stretch out.

Many owners prefer to buy chains produced by Sachs: it is extremely unlikely that they will encounter defects in their products. However, we do not insist on this: the mention is inserted only for beginners who have not yet decided on their preferences.

  • The new part is put on the crankshaft sprocket that has not been removed;
  • Next comes the second, auxiliary units. After engaging it, the sprocket is placed on the drive shaft and secured with a bolt;
  • The chain is grabbed by the hook and pulled up, where the camshaft sprocket should be. The chain is pulled over it, and only then the sprocket is mounted in its rightful place;
  • The coincidence of all the above marks and the tension of the leading chain branch are checked;
  • The camshaft sprocket fasteners are attached;
  • Next, in turn, are installed: a damper, a chain tensioner shoe and a limit pin.

The transmission switches to neutral, the crankshaft rotates 3 turns in the direction in which it rotates when driving. Again, the matches of all risks are checked. If some marks do not match, the situation is corrected in accordance with the above material. If everything is in order, the cap nut on the tensioner is tightened, the gear is engaged and all the bolts are tightened. Everything that you have left in a disassembled state is put back in its place in the reverse order of disassembly. At this point, replacing the timing chain on a VAZ 2107 with your own hands can be considered complete.

The timing chain on the VAZ 2107 is one of the most important parts that requires monitoring its condition. When Lada family cars have a mileage of more than 60 thousand km, it is necessary to check this element. The life of the chain depends not only on the vehicle’s mileage, but also on such factors as the nature of the vehicle’s operation. Damage to the product may cause it to break while the motor is running, which can have serious and costly consequences. If uneven operation of the engine or extraneous sounds during operation is detected, it is necessary to diagnose the gas distribution mechanism, and, if necessary, replace the timing chain on the VAZ 2107 with your own hands. We will find out how to do this further.

During operation of the VAZ 2107 car, the chain gradually stretches. In order to reduce noise during stretching, tension is used, but over time and wear it ceases to help, and the noise can no longer be eliminated. If this happens, then it’s time to think about repairs. A stretched chain on a VAZ-2107 car leads to the fact that the gear teeth of both the camshaft and the crankshaft are “eaten”, and this leads to the replacement of all timing drive parts. Therefore, if the car’s lifespan already exceeds the norm, and extraneous sounds are heard when the engine is running, then you immediately need to replace the timing chain with a VAZ 2107.

Replacing a chain quickly

Before changing the product, you must purchase a new part. The cost of a new product varies from 400 to 600 rubles. The gas distribution mechanism on VAZ 2107 cars, the injector and the carburetor, are the same, so the replacement process will be appropriate for both types of engines. First, let's look at a quick way to replace a chain, which is unreliable and incorrect. If you make a replacement in this way, then know that this is wrong.

This replacement method is suitable when the chain breaks on the road and you need to quickly replace it in order to get home.

The replacement principle involves removing only the valve block cover. A new circuit is disconnected. The old chain is dismantled, for which its links are disconnected, after which the end of the new chain is connected to one end. Next, use the key to turn the crankshaft until the old chain pulls the new one behind it and comes completely out of the engine. When this happens, disconnect the old chain and connect the two ends of the new one. With this replacement method, it is only possible to change the chain, but the sprockets, tensioner shoe and damper cannot be replaced.

Replacing the timing chain

Now let's look at how to replace a product in the correct and reliable way. First you need to make sure you have the basic tools. Withdrawal consists of the following steps:


This completes the process of removing the chain. Now we take new parts and begin installation.

The gas distribution mechanism (GRM) of engines has two types of transmission - chain and belt. The 2105 engine model is equipped with a belt drive, but mainly on the engines of the Volzhsky Automobile Plant the drive is a chain. Internal combustion engine (ICE) models 2101, 2103, 2106. 21213 have a chain drive.

CHAIN ​​DRIVE VAZ 2107

The chain drive on VAZ cars is designed to transmit motion from the crankshaft to the camshaft. The rotating camshaft opens and opens the cams, through which the cylinders are filled with the fuel mixture, and the working cycle occurs in them. Malfunctions in the gas distribution system lead to malfunctions or to a complete stop of the internal combustion engine. Therefore, the chain drive must be maintained in good condition and adjusted if necessary.

DEVICE

We reassemble in the reverse order and pay attention to the marks - they must match. Before installation, the tensioner should be recharged - loosen the cap nut, recess the plunger and tighten the nut. To tension the chain (when everything is already assembled), we loosen the tensioner nut, the plunger shoots and tensions the chain drive.