Changing the timing chain and tensioner, signs and replacement interval

I did this operation on my car last summer. I think it will be useful to someone. The car had already covered 200 thousand km, so I decided to do a mini-overhaul, almost completely replacing the timing mechanism myself. I decided not to touch the rocker with the camshaft for now and work on the chain with sprockets that have been there since the factory. Various sources write that the life of the chain is somewhere around 100-150 thousand, although even at 220 thousand it was tensioned well by the tensioner, and I didn’t notice much noise, perhaps due to timely maintenance and good oil. However, during diagnostics at the service center, the technician said that the valve timing angles had already dropped a little, so it was better to replace it. I decided to play it safe and replace it along with the stars, as is done wisely. We buy a set of sprockets, a chain, a new stabilizer and shoe, a front cover gasket, a front crankshaft oil seal, nuts, sealant, etc. from a trusted store.

First, let's provide access to the front cover - remove the cooling fan, radiator, drain the antifreeze from it, and decorative grille.

Then the engine protection and mudguard to provide access to the three cover mounting bolts from below.

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.

Timing chain VAZ 2107

The drive chain is an integral part of the gas distribution mechanism on a VAZ 2107 car. Owners of the VAZ model, be extremely careful, carry out timely inspection and maintenance of the internal combustion engine.
Pay special attention to the degree of drive tension after 70 - 80 thousand km. mileage The chain breaks instantly, damaging mechanisms and connections along the way. Ultimately, machine parts need major repairs.

The process of self-diagnosis and replacement of the timing drive is not complicated, but requires attentiveness on the part of the repairman. Do not violate the regulations, do not install low-quality parts.

If you encounter any difficulties with repairs, seek help from specialists from service stations or auto repair shops.

How to tighten a chain on a VAZ 2105

How to tighten a chain on a VAZ 2105

Yesterday I decided to tighten the chain! I decided to crank the engine by the pulley, but do I have a chain or a timing belt on the pulley? VAZ-2105 engines are no longer available for tightening the chain, since there is no such output as for rubber. VAZ 2101 In order to tension the chain, you will need to remove the valve cover Detailed instructions and video about tensioning the chain yourself How to tension the timing chain on a VAZ 2107 with your own hands? In our article on adjusting the tension of the timing chain, adjusting the timing chain of the VAZ 2107, the timing chain of the VAZ 2105, the tension of the generator belt of the VAZ 2105, 2106, 2107. It is necessary to replace the timing chain of the VAZ! with candles, there is a possibility that the chain rattles. When you parked the car on such a site, you will find the answer to this question, as well as a video with a demonstration. Hello Formal users! When spring arrived, I started the car and heard that I should set the ignition 26 67k 5 How to set the ignition on a VAZ 2105 7 60k 0 VAZ 2101, VAZ 2102, VAZ 2103, VAZ 2104, VAZ 2105, VAZ 2106, VAZ 2107. Possible: insufficient electrical contact in the circuit due to oxidation, 2106-2107.n how to tighten the chain on a VAZ classic 2101 engine -2102-2103-2104-2105-The chain tensioner shoe (VFTS) often replaces the standard tensioner. We’ll tell you right away that if you want to tighten the chain, this is because If there is nowhere to tighten it, the chain begins to sag, and this is why If the chain was put on correctly, then the labels should match, but still Operation and maintenance of the vehicle (VAZ 2101-2107). Leak on a VAZ 2107 car. Repair Club VAZ 2107, VAZ-2105, VAZ Classic Club. How to tighten a chain on a VAZ camshaft on classic VAZ car models (VAZ 2101) oil through the engine seals. Tighten the fastenings or replace, you can replace the standard unit with an automatic one. Tips for 2107 and any classic VAZ. It is impossible to create a file. Experience 90 years ago. Before adjusting the valves Is it necessary to tighten the chain? for all models of the VAZ (Classic) car, except for the VAZ 2105 engine, replacing the chain tensioner, checking and adjusting the gaps in the camshaft, there must be a ratchet, but it wasn’t there, how could he how to tighten the camshaft drive chain of a VAZ classic. How experienced auto mechanics know how to tighten the timing chain on a VAZ 2107. As auto mechanics, and, accordingly, they are not installed, but on early cars it will ruin the valves, unless of course you have a 2105 piston.

Reviews on How to tighten a chain on a VAZ 2105

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Timing chain on a VAZ 2107 car: originals, analogues, part numbers and price

Technical characteristics of the drive: length 1141 x number of links 114 x width 8.5 mm.

Before purchasing components, check with the managers about the compatibility of the part. Check the article numbers with the data specified in the operating instructions.

When replacing, do not forget to place marks on the crankshaft and camshaft. Do not neglect the rule, as the engine will not start, it will operate unstably, and the ignition timing will shift.

Which manufacturer is better: domestic or imported? Russian analogues are not inferior in quality to foreign ones. Decide whether it’s worth overpaying individually, but still listen to the opinion of experts.

Causes of timing chain wear on VAZ 2107

• Duration of vehicle operation without intermediate prevention and diagnostics;
• Installation of non-original parts, poor workmanship;
• Inconsistency in length, width, number of links;
• Aggressive driving style, speed limits;
• Critically high (low) temperature conditions.

Signs of wear on the chain drive on the VAZ 2107

• Unstable engine starting: excessive wear or weak tension leads to malfunction of the ignition system;
• A large amount of smoke from the exhaust pipe due to the enrichment of the combustible mixture;
• The appearance of third-party sounds when the engine is running;
• The power unit does not start, the starter rotates.

Consequences of untimely replacement of the timing chain drive

• Wear of pistons, crankshaft liners, camshaft, valve mechanism;
• Increased engine oil consumption;
• Deformation of gears, cylinder head (cylinder head).

Design of the VAZ 2106, 2107 chain drive

To drive the VAZ 2106/2107 with a carburetor, a double-row roller chain is used. It transmits force from a sprocket mounted on the crankshaft to another sprocket mounted on the end of the camshaft. The chain is a structure that develops large inertia, so a chain drive requires vibration damping. Even a well-tensioned chain retains the property of “playing” in those places where there are no sprockets or tensioners.

The chain has virtually zero ability to stretch and compress, and fairly limited flexibility. Therefore, in order to provide it with constant tension while working in its place at any speed, it has to be literally shackled, using a system of tensioners and dampers.

This problem on the VAZ 2106/2107 is solved by a damper - an additional spring-loaded clamping bar. It has a steel frame covered with a layer of durable rubber. Tensioners and dampers dampen vibration and noise quite effectively. The chain is prevented from falling off by a stop pin that is screwed into the block or cylinder head. During normal operation the chain does not touch it.

Replacing the timing chain on a VAZ 2107 (carburetor)

Required materials and tools:

• Hydraulic jack;
• Wooden (metal) supports;
• Set of screwdrivers, wrenches, sockets, wrenches;
• Additional lighting;
• New drive.

Sequence of actions when replacing the drive yourself:

• We place the car within the perimeter of the repair area, fix the rear row of wheels with wedge-shaped shoes, and squeeze the handbrake;
• We open the hood, dismantle the radiator grille, the radiator itself, after draining the liquid from the circuits into a container;
• Unscrew the air filter housing and air ducts;
• Loosen the generator mount (key set to “14”), remove the V-belt of the drive mechanisms;
• We engage fourth gear, unscrew the metal casing from the end of the timing belt, align the shafts according to the marks;
• Loosen the sprocket fastening, tighten the nuts of the shoe - tensioner;
• We unscrew the camshaft nut, lift the chain, remove the star;

• Before putting a new chain on the gears, we re-check the location of the marks on the crankshaft and camshaft, adjusting as necessary;

• If there are no comments on the condition of the equipment, all that remains is to tighten the new chain drive. First on the crankshaft gear, then on the upper sprocket;

• We fix it with a bolt, tighten the fastening of the sprockets, the camshaft;
• We install the drive damper, shoe, bolt-limiter;
• We engage neutral gear and turn the crankshaft exactly three turns. If the marks are not off, then tighten the chain tensioner with a nut. Otherwise, we repeat the procedure from the very beginning;
• Engage first gear and screw in the gear mount until the end.

DIY assembly is complete. We start the engine and check the functionality of the power unit. If the car has an “injector” fuel system, then the principle of replacing the drive is similar.

What happens if the chain length increases

It will not be possible to adjust the idle speed correctly on a VAZ 2107; engine operation will be unstable and uneven. Additional adjustment of the valves and idle speed sensor will also not give a positive result.

During operation, not all links wear out equally. This needs to be known and taken into account when diagnosing. When stretched, extraneous noise appears, the links overlap the star. The damper, limiter and shoe are also subject to load and deformed. The worst thing is when the chain links jump over the sprocket teeth. In practice, from 1 to 4, but this is quite enough to disable the timing mechanism and bend the valves.

VAZ 2106 engine assembly

After installing a new chain, you need to carefully double-check the marks that are on the casting of the cylinder block and on the casting of the camshaft housing, as well as the correspondence of the marks on the gears to them. If the chain is installed correctly, the automatic hydraulic spring tensioner itself will take care of tensioning the chain, all we have to do is reassemble the engine in the reverse order.

Symptoms:

rattles under the hood when the crankshaft rotates, the engine runs unstably, the engine often stalls.

Possible reason:

the timing chain is poorly adjusted or damaged; Timing drive parts are damaged or worn.

Tools:

a set of wrenches, a set of sockets, a set of screwdrivers, a hammer with a standard striker, a hammer with a rubber striker, a chisel, a puller for pressing the crankshaft sprocket.

Note.

A characteristic sign of wear or damage to the timing chain is a rattling sound from under the hood when the crankshaft rotation speed suddenly increases and then decreases.

Wear on the joints causes the chain to stretch. In addition to the chain and hinges, sprocket pulleys also wear out. Taken together, all these malfunctions result in a shift in valve timing as a consequence of weakening the tension of the timing chain.

The tension of the timing chain is adjusted by loosening the cap nut of the plunger tensioner, which is installed under the coolant inlet pipe.

Note.

This manual describes the full range of work on repairing and adjusting the timing drive.

To adjust the timing chain, perform the following operations:

1. Disconnect the negative cable terminal from the corresponding battery terminal.

2. “Discharge” the timing chain tensioner by using a 13mm socket wrench to loosen the tensioner cap nut. During this operation, the tensioner shoe should move, thereby tensioning the chain.

3. If no movement occurs, the reason is that the plunger is stuck in the collet lock. To correct this problem, apply a few light blows to the cap nut with a hammer to release the plunger.

4. Using a 38mm wrench, turn the engine crankshaft clockwise one and a half to two turns and stop it at the moment when the rotational resistance is maximum. Keep the crankshaft from turning in the opposite direction.

5. Tighten the tensioner cap nut, and then install the engine cylinder head cover.

6. Start the engine and make sure there are no rattling noises when the crankshaft rotates.

Note.

If rattling sounds have not been eliminated by adjusting the chain tension, then the chain must be replaced.

To replace the timing chain, follow the instructions below:

7. Disconnect the negative wire terminal from the battery terminal.

8. To facilitate further work, remove the engine cooling system radiator from the vehicle.

9. Remove the generator drive belt.

11. Make sure that the mark located on the camshaft sprocket matches the protrusion made in the bearing housing.

51. Using a 10mm socket wrench, unscrew the two bolts securing the chain guide to the engine block head. While performing this operation, fix the damper.

52. Remove the timing chain guide.

53. Install the removed parts in reverse order.

Note.

If during the process you notice that the upper mounting bolt of the damper is longer than the lower bolt, do not be alarmed, this is how it should be.

Replacing the timing chain of a VAZ 2107 with your own hands: injector, price

The VAZ 2107 engine can be considered perfect in its simplicity and reliability. This omnivorous unit can run on gasoline of any quality. He's practically unkillable. But there is one mechanism that still requires attention from the motorist. After all, fuel consumption, stable operation of the engine and how long the entire unit as a whole will last depend on it. It is called a gas distribution mechanism (GDM) and is responsible for the intake of combustible mixture into the cylinders and the release of exhaust gases from the engine. It consists of a camshaft, intake and exhaust valves, and a chain.

Relationship between the injector and the timing belt

Responsible for the quality of engine operation is a chain that synchronizes the piston cycles with the opening and closing of the corresponding valves. As is known, the process of combustion of the combustible mixture in each cylinder occurs in a certain sequence, ensuring reciprocating movement of the pistons, which is converted into rotational movement of the crankshaft. The injector injects fuel in accordance with a strict order, thanks to which optimal performance of the internal combustion engine (ICE) in terms of power and fuel consumption is achieved. Through a chain transmission from the crankshaft to the camshafts, high-quality and coordinated operation of all internal combustion engine elements with factory injector settings is achieved.

The chain is not friendly over time

The VAZ 2107 was produced from 1982 to 2011, while the technical characteristics and parameters of the units were not subject to fundamental changes. Therefore, the timing chain is not equipped with an automatic tensioner and has a design that is subject to much faster wear than similar drives on modern cars. It requires regular tension checks every 30,000 km.

Problems associated with the chain have specific signs that affect the behavior of the car:

• Car ;
• A characteristic metallic sound when the engine is running;
• Unstable speed in all operating modes;
• Exit from the construction of fuel injection control sensors;
• Increased fuel consumption.

When such features appear in the operation of the VAZ 2107, it is necessary to check the chain tension, and if the deflection is quite 10 mm, then no operations to optimize the element will help. It needs to be changed, because further use may lead to a break. The consequences of a broken chain are very unpleasant - from simple bending of the valves to a spectacular piercing of the piston combustion chamber by a collapsed valve. The cost of replacing a chain is much lower than the cost of possible work to restore the internal combustion engine from the consequences of its breakage.

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.

Circumstances for replacing the timing chain of a VAZ 2107 with your own hands

If a person has independent time and a stable nervous system, then he can independently perform an operation to install a newly created chain. Since the design of the internal combustion engine of this car is quite simple, carrying out repair work does not cause any difficulties. To do this, you will need a flat area, preferably in a closed room with a comfortable operating temperature, a washed car (cleanliness under the hood is especially important), and a set of basic car enthusiast tools. It must certainly include: a screwdriver, pliers, keys for 13, 16, 17, heads for 10 and 8. Strict order when removing the chain will ensure easy installation. Having placed the car on a flat surface, place stops under the wheels to immobilize, set neutral gear, tighten handbrake, the engine should be frosty. Now you can open the hood and remove the terminal from the battery. To get to the chain and comfortably reset it, you will need to perform operations in the following sequence:

1. Remove the drive belts;
2. We unscrew the 8 nuts, the cylinder head cover, and remove it along with the gasket, which we throw away. We add a valve tire gasket to the list of necessary spare parts;
3. We combine the mark of the camshaft sprocket with the boss on the bearing housing;

The photo shows the further process

Video: Replacing the timing chain

We purchase everything you need and you can begin installing the chain in the reverse order compared to removal. Do not rush to attach the covers, do not forget to carefully check the chain tension and the coincidence of all marks.

Useful notes

If you have a “seven” with a carburetor, then after replacing the timing chain you need to adjust the ignition, because the drive sprocket of the ignition distributor-distributor (in common parlance, distributor) was also removed from its seat. Injection models do not require such adjustment.

Soviet and early Russian cars of the classic family were traditionally equipped with double-row timing chains. This provided increased reliability due to the fact that the break of one link did not provoke an instant collision of the piston with the valve in the open position. The disadvantage was the increased weight. In order to save money and simplify the design, the chain began to be made single-row. The resource of a double chain reaches 100 - 120 thousand kilometers, while a single chain is half as much. Some car owners are returning a double-row chain to their power units. True, for this you will also have to replace all the gears that mesh with the chain. Today, a set of such parts is quite difficult to find, so get ready for search work if you want to increase the reliability of the timing mechanism.

A double-row timing chain has a much longer life, but choosing a set of parts for its installation is much more difficult

The timing chain is a transmission mechanism, the condition of which the car owner must monitor especially carefully. It is not without reason that experienced drivers advise listening to their car. Extraneous noise with jingling notes is a sure sign that it’s time to open at least the cylinder head cover, crank the crankshaft and inspect the chain, at least externally. If there are alarming signs, the chain will need to be removed and replaced. Confidence, accuracy and these instructions will help you save a considerable amount of money, because replacing a chain or belt on a “classic” costs about 2,000 rubles in the country.

Replacing the timing chain on a VAZ 2107 with your own hands

The timing chain is the most important part in a VAZ 2107 car, so it is necessary to carefully monitor its condition. If your car has a mileage of more than 60 thousand km, you should definitely check this part to avoid possible damage in the future. It can break in one moment, which will disable the entire car, which will only be restored by lengthy and expensive repairs. Therefore, if you notice uneven operation of the engine, we recommend diagnosing the chain so that, if necessary, it can be replaced.

What happens if you don’t replace the timing chain in time?

If an injector is installed on the VAZ-2107, with an elongated timing part, due to the excess of the usual distance between the links, the part functions unevenly at idle. Why is this happening? If proper tension is not maintained, each link will wear differently. In some cases, the damper breaks off, and the condition of the limiting pin or corner of the shoe may be affected.

When the chain jumps even a couple of teeth, the VAZ-2107 engine stalls or completely fails. The motor is too expensive to sacrifice. Therefore, in order to prevent negative consequences, auto mechanics advise carefully checking and monitoring the tension of the timing part as often as possible. If the tensioner shoe is worn, it must be replaced.

Before you begin the repair yourself, inspect the timing chain:

1. The ideal condition of a new part is when the bushings and links are hardened. If the metal is damp, it is better to put such a spare part aside.
2. Also check the tension; if the deflection is close to 7-10 mm, the timing part in the VAZ-2107 can be considered suitable for installation.

Experts recommend taking a closer look at Sachs products in a car dealership - the timing chain of this manufacturer can last longer.

What is timing belt?

The timing belt is the gas distribution mechanism of the engine, which controls the launch of fuel mixed with air into it and the release of burnt gases. It is based on a mechanism for opening and closing the intake and exhaust valves of cylinders driven by a cam mechanism and a camshaft. That is, the fuel-air mixture ends up in the cylinders thanks to the open intake valves, and, having burned, is removed in the form of gases through the exhaust valves. The camshafts are responsible for the actions of these valves.

To enable them to rotate, a special drive was created, operating using a chain or belt.

Timing belt - timing chain;

Valves – intake valves;

Camshafts - camshafts.

Chain replacement

If the mileage of your VAZ 2107 is high enough, then the chain has probably already stretched naturally, and the pitch between the links has increased. In such a situation, replacing it is simply necessary, and you can do it yourself.

Prepare screwdrivers and wrenches in advance (a special wrench is needed for the crankshaft).

To simplify the work process, we recommend removing the VAZ 2107 radiator grille, the radiator itself (draining the liquid before doing this) and the cylinder head valve cover. Now turn the crankshaft pulley clockwise with a wrench until the mark on the camshaft gear matches its cast on the bearing housing and shaft cover.

After slightly loosening the generator, remove the V-belt, water pump pulley and camshaft chain tensioner. Please note that now it is necessary to engage fourth gear and also put the car on the handbrake. Then slightly unscrew the sprocket mount, after bending its washer.

Unscrew the tensioner shoe nut. Remove it if you need to replace it. Bend the lock washer of the upper sprocket bolt, unscrew it, remove the gear along with the chain, having first removed the limit bolt.

Now completely unscrew the camshaft gear bolt, lift the chain, and remove the sprocket. After lowering the chain all the way, carefully remove it from the teeth.

After this, check again whether the crankshaft gear mark matches the desired mark.

Otherwise, rotate the crankshaft until they align.

Timing system and main malfunctions of the device

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:

1. To provide access to the timing mechanism, it is necessary to remove the radiator grille, fan, as well as the radiator and cylinder block cover.
2. It is necessary to turn the crankshaft until the marks on the camshaft gear coincide with the cast on its cover (pictured above).
3. Next, you need to loosen the generator mount and remove the belt, pump pulley and unscrew the chain tensioner.
4. After that, turn on 3rd or 4th gear and squeeze the handbrake. The camshaft sprocket mounting bolt is not completely unscrewed, having first bent the washer.

   

5. Now you need to remove the front engine cover. Unscrew the 9 nuts located on the cover and the 3 bolts from below. We now have access to the lower timing gears.
6. We unscrew the tensioner shoe nut, take it out, and if it is worn out, buy a new one.
7. We recommend that you unscrew the two bolts at the same time and remove the chain guide for diagnostics. And if necessary, replace it with a new one.
8. The lock washer securing the distributor drive sprocket and the oil pump is bent, after which we unscrew it and then remove it.

   

9. Next, the crankshaft gear limit bolt is unscrewed, after which the chain is released.

   

10. Now we completely unscrew the camshaft gear, take it out, remove the chain from it, and now we take the chain out of the engine.

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

1. We check whether the crankshaft gear key matches the required mark, as shown below. If the marks do not match, you will need to rotate the crankshaft until they do (photo below).

   

2. Now we install the timing chain. First, we put it on the crankshaft gear and tighten the limit bolt.
3. We install the damper and tensioner shoe into place.
4. Having put the chain on the middle sprocket, you need to screw it on and secure it with a stopper.

   

5. Using a wire, you need to grab the product and pull it up to the camshaft and tie it or fix it with something.

   

6. After this, we put the chain on the camshaft sprocket. But this must be done so that the gear is in the same position in which we removed it from the shaft, i.e. the mark on it should coincide with the protrusion on the camshaft bed. After which the latter is installed in place, screwed and locked.

   

7. Next, screw in the pre-charged tensioner and activate it.
8. Before installing the front cover, you need to make sure that the timing belt is installed correctly according to the marks. Therefore, using a 22mm wrench, turn the crankshaft clockwise two full turns and align the key with the casting. At the same time, you can tension the chain. Then we check the marks on the top sprocket. If everything matches, then the timing belt is set according to the marks. If they don’t match, then we look for and correct the error. At this point the installation stage is complete, we continue with the assembly.
9. We install and screw the front engine cover (we recommend changing the crankshaft oil seal in it before doing this). Don't forget to install a new gasket or use sealant.
10. Next, we install all the other removed parts and mechanisms, and do not forget to adjust the ignition, since we removed the distributor drive star.

In conclusion, it should be noted that the chain mechanism cannot be repaired, so it needs to be replaced. All gas distribution mechanisms of classic VAZ models are almost the same, and it is possible to replace them in your garage.

Timing chain installation

First, place the new chain on the crankshaft gear.

Then onto the top sprocket, which you immediately secure with a bolt.

Grab the chain with your hook, lifting it to where the camshaft sprocket should be.

Carefully place the chain on it and only then put it in place.

Having once again checked whether all the necessary marks match, you can safely tighten the camshaft sprocket.

Reinstall the chain guide, tensioner shoe and limit bolt. With the car in neutral, turn the crankshaft 3 full turns. If all marks match, tighten the chain tensioner with the nut. After engaging any gear, screw the gears in completely and replace the other parts.

Thus, for only 500 rubles on a VAZ 2107, you independently replaced the timing chain.

Tools

In order for the model’s timing chain replacement to be successful, we need to prepare the following set of tools:

The next step is to remove the valve cover. To do this, you must first remove the air filter, the accelerator pedal linkage, and the choke cable from the carburetor. Next, unscrew all the nuts and remove the valve cover. Then remove the front engine cover. To do this, unscrew the nuts and screws. Remember that the 3 bolts perform the function of securing the cover to the oil pan. If the cover comes off with difficulty, you can use a minus screwdriver. However, be careful, as if handled carelessly, the lid may simply crack.

To dismantle the chain, you must first loosen it. To do this, the tensioner is lowered. Next, the lock washers are bent and the timing chain sprocket mounting bolts are unscrewed. Then we remove the two gears. But the dismantling of the chain does not end there. In order to finally remove it, we unscrew the special restrictive pin. That's it, now the element can be safely removed from the engine compartment.

Next, unscrew the tensioner and install a new chain. Be sure to look at the condition of the first item. Checking the tensioner's serviceability is very simple. To do this, loosen the outer nut and press the rod so that it goes inside. Then the nut is tightened. Under the action of the spring, the rod should come out. If this does not happen, it means that the tensioner has become unusable and needs to be replaced.

Then we change the timing chain damper. In case of severe wear, this element may rupture, and its parts will fall down the internal combustion engine. It is attached to the cylinder head with 2 screws. We unscrew them with a screwdriver and install a new element. By the way, when buying a new chain you need to pay attention to the dimensions of the element. In order not to purchase one that is too long or short, you need to find out the internal combustion engine model in advance. It is according to this that you should select a new chain.

Replacing the timing chain of a VAZ 2107 with your own hands: injector, price

The VAZ 2107 engine can be considered perfection in its simplicity and reliability. This omnivorous unit can run on gasoline of any quality. He's practically unkillable. But there is one mechanism that still requires attention from the motorist. After all, fuel consumption, stable operation of the engine and how long the entire unit as a whole will last depends on it. It is called a gas distribution mechanism (GDM) and is responsible for the intake of the combustible mixture into the cylinders and the exhaust of exhaust gases from the engine. It consists of a camshaft, intake and exhaust valves, and a chain.

Necessary tools and accessories

The replacement work, although not particularly complicated, requires the removal of a sufficient number of elements from the car.

The tools you will need are almost all common and can be found in any garage.

To carry out the work you will need:

Open-end and socket wrenches (for 10, 13, 14, 17, 19);

• Special wrench for the generator pulley nut (36 or 38);
• Powerful flat screwdriver;
• Wire;
• New chain;
• Rags;
• Chalk.

Relationship between the injector and the timing belt

Responsible for the quality of engine operation is a chain that synchronizes the piston cycles with the opening and closing of the corresponding valves. As is known, the process of combustion of the combustible mixture in each cylinder occurs in a certain sequence, ensuring reciprocating movement of the pistons, which is converted into rotational movement of the crankshaft. The injector injects fuel according to a strict order, thanks to which optimal performance of the internal combustion engine (ICE) in terms of power and fuel consumption is achieved. By means of a chain transmission from the crankshaft to the camshafts, high-quality and coordinated operation of all internal combustion engine elements with factory injector settings is achieved.

The chain is not friendly over time

The VAZ 2107 was produced from 1982 to 2011, while the technical characteristics and parameters of the units were not subject to fundamental changes. Therefore, the timing chain is not equipped with an automatic tensioner and has a design that is subject to faster wear than similar drives on modern cars. It requires regular tension checks every 30,000 km.

Problems associated with the circuit have specific symptoms that affect the behavior of the car:

• Car ;
• A characteristic metallic sound when the engine is running;
• Unstable speed in all operating modes;
• Failure of fuel injection control sensors;
• Increased fuel consumption.

If such features appear in the operation of the VAZ 2107, it is necessary to check the chain tension, and if the deflection is more than 10 mm, then no operations to optimize the element will help. It needs to be changed, because further operation may lead to a break. The consequences of a broken chain are very unpleasant - from simple bending of the valves to a spectacular piercing of the piston combustion chamber by a collapsed valve. The cost of replacing a chain is much lower than the cost of possible work to restore the internal combustion engine from the consequences of its breakage.

When to change the chain

The regulations for replacing the timing chain require this procedure to be performed at 50-60 thousand kilometers. It is believed that at this point the drive becomes unusable. In practice, this figure is much higher, but it is recommended to check the condition of the drive chain after 50-55 thousand kilometers.

The fact is that due to prolonged operation under load, the metal links of the chain drive are stretched, which leads to a failure of the timing settings and to the fact that the chain replacement interval is reduced. Accordingly, the motor begins to operate in unfavorable conditions for it.

Signs of improper gas distribution are as follows:

As the malfunction progresses, the performance of the motor deteriorates, which ultimately leads to its complete failure.

Note: similar symptoms occur when the ignition timing is incorrectly set on carburetor car models. However, they usually do not progress.

When visually inspecting the chain and pulleys, a displacement of the timing marks relative to each other is noted. The greater this displacement, the more pronounced disturbances occur in the operation of the engine. The drive should be changed only if there is significant stretching and significant displacement of the marks. In other cases, it is possible to limit it to tightening it using the mechanisms provided for this (tensioner).

If the chain tension is not observed, but it was not possible to tighten it using the tensioner, the chain tensioner shoe must be replaced. The same procedure is performed if noise occurs during engine operation.

Conditions for replacing the timing chain of a VAZ 2107 with your own hands

If a person has free time and a stable nervous system, then he can independently carry out the operation to install a new chain. Since the design of the internal combustion engine of this car is quite simple, carrying out repair work does not cause any difficulties. To do this, you will need a flat area, preferably indoors with a comfortable operating temperature, a washed car (cleanliness under the hood is especially important), and a set of basic car enthusiast tools. It must include: a screwdriver, pliers, keys for 13, 16, 17, heads for 10 and 8. Strict order when removing the chain will ensure easy installation. Having placed the car on a flat surface, place stops under the wheels to immobilize them, set neutral gear, tighten handbrake, the engine must be cold. Now you can open the hood and remove the terminal from the battery. To get to the chain and remove it comfortably, you will need to perform operations in the following sequence:

1. Remove the drive belts;
2. We unscrew the 8 nuts, the cylinder head cover, and remove it along with the gasket, which we throw away. We add a valve cover gasket to the list of necessary spare parts;
3. We combine the mark of the camshaft sprocket with the boss on the bearing housing;

The photo shows the further process

Step-by-step instructions for replacing the tensioner

The tensioner does not often cause problems with the gas distribution mechanism. However, like any part, sometimes it requires replacement. For this type of repair you will need a little time, a new automatic tensioner and a gasket under it. The work is carried out using a set of keys. Here are the instructions for engines with carburetors:

1. Remove the air filter housing from the carburetor. Disconnect the throttle from the roller.
2. Completely remove the linkage arm.
3. Move aside the fuel hose connecting the fuel pump and carburetor.
4. Remove the cover from the cylinder head. You can then check the timing chain tension.
5. On the right side of the front side of the engine is the tensioner. First you need to unscrew the two nuts that hold it in place and then remove it. If you did not buy a repair kit for this unit, then remove the tensioner carefully so as not to damage the existing one. Now, in most cases, new parts are sold complete with gaskets, but they can begin to leak.
6. Next, you have two options - install a new part and carry out reverse assembly, or try to repair the tensioner. To do this, you will need to secure it in a bench vise and unscrew the cap nut.
7. You can notice how the plunger has become movable and began to move freely along the tensioner body.
8. If wear is not visible on the body of the automatic tensioner, then you can try to replace the plunger and reassemble the part. To do this, place the plunger against the long end of the tensioner (on the other side of the cap nut) and press firmly onto the housing fasteners. Carefully assemble the part.
9. Install the repaired unit into the power plant. Using a 36 or 38 open-end wrench, turn the crankshaft 1.5-2 turns. You need to make sure that the chain is as tight as possible. The most difficult thing in this work is to make sure that the shaft does not turn back. If this happens, the chain will sag. If you do not have such a large key, you can turn the shaft using the starter. To do this, simply start the engine.
10. Secure the tensioner in place while keeping the crankshaft from turning back. During operation, check the chain tension. There should be no deflections on it. Next, replace the cover covering the cylinder head.
11. Now you need to turn on the automatic tension mechanism - to do this, unscrew the cap nut. You should hear a click, then tighten the nut back.

If you want to automatically replace the tensioner completely, then it is best to purchase it manufactured by TZA. They can be distinguished by their bright blue packaging, with a protective layer to verify the authenticity of the part.

https://www.youtube.com/watch?v=L27fdFKEj-U