Proper tightening of cylinder bolts. We specify the moment of tightening the bolts of the GBC in the process of installation what force to delay the GBC VAZ

Greeting the Lord! If you consider yourself a real driver, repair skills should be exclusively high levelWell, the maximum average. The experienced motorist is equivalent to anything that the punched wheel is that engine repair. Of course, even an experienced, but minimum, how to pull the screws on the heads of the cylinder head is not always decided to get into the motor - it should know!

In this procedure, a key success factor is the moment of tightening the bolts of the cylinder block head, it must be chosen correctly! Agree, all regards the repair of the engine is mainly the topic that is difficult to express, but I still will try. Today, on examples of different power units, I will try available language Explain all the nuances: effort, tightening the bolts, etc.

Main signals to action

It is extremely important to establish the need for suspenders! If oil is seeping between the head and block, it can mean several "diagnoses":

1. Worn out gLP gasket - This is mainly due to the periodic engine overheating.
2. The deformed head of cylinders.
3. Incorrectly tightened screws - It all depends on the qualification of the repairman.
4. Bolts just glorified a little - Summates their tightening them, but only correctly performed.

Today, modern cars (from 2010 from 2010) do not need such a procedure, before during the USSR, everything was completely different, and the cars were others!

Just think: then the process of pulling the GBC was a mandatory debut item in our state.

From this, you can conclude that you are most susceptible to weaken the head bolts of the old generation machine, then you mean a classic and it concerns not only "Zhiguli"!

So, if you are the happy owner of Muscovite, UAZ, Volga or ordinary VAZ, do on the mustache!

If you are lucky and the bolts need only tighten, you need to know the correct order of their twisting. Otherwise, the metal will be unnecessary, and this means that without distortion, which depreciate the entire procedure, can not do. On the engines of classics, as well as 402 and 406 models, the suspension is carried out in 2 approaches:

• Reception number 1 - Screws from 1 to 10 are delayed by a moment 3.5-4.1 kgf.m.
• Reception number 2 - the same elements are amenable to force with a moment of 10.5-11.5 kgf.m.
• Bolt 11 Tighten the last with the moment 3.5-4.0 kgf.m.

In the photo, you can see a clearer motor tightening sequence with 8 valves, which you need to repeat.

Procedure for tightening bolts VAZ 2108-09 Samara

Everything is almost also here, start from the middle, but instead of two, we perform 4 approaches:

• Approach number 1 - all bolts in the sequence, as in the picture are delayed with a moment of 2.0 kgf.m.
• Approach No. 2 - the force of tightening bolts of the cylinder head of the cylinder is equal to the moment in the range of 7.5-8.5 kgf.m.
• Approach №3 - we are in collapse bolts by 90 degrees.
• Approach №4 - Repeat the previous paragraph.

I draw your attention that before the beginning of such a procedure, it is desirable to clear the power unit, I already talked in one of the past publications. There you can find the technology, so there should be no problems.

Owners of the 16-valve priory, as well as VAZ 2114 and VAZ 2112 with a similar power installationIt is necessary to perform almost the same actions:

• Step number 1 - broach on the sequence specified in the photo by a moment in 2.0 kgf.m.
• Step number 2 - reinstall the bolts by 90 degrees.
• Step number 3 - scroll through a bolt to 90 degrees again.

Please note: the reuse of old bolts on such motors is allowed, but only those whose length does not exceed 95 mm. Measures of the bolt are carried out together with the washer.

Main tool

Of course, the entire operation is not to complete the usual wrench, or rather, you can, but only the end. However, the tightening torque cannot be set. Therefore, before proceeding, be sure to separate the dynamometer key. The price hesitates within 600 - 3000 rubles - you can buy a time!

It is not difficult to use it:

• Set the holder to zero (The instrument readings should be equal to the initial position of the holder.
• Controlling the key readings start twist holderIf the numbers do not change - the bolts are stretched, which is the norm. When the readings sharply went uphill, it means insufficient stretching. In this case, only after stabilization is adjusted.

Of course, do not forget - begin to work without the original manual to a specific car whether it is a prior or any other car - it is extremely undesirable, but if it did not turn out to be at hand at hand, I provided you at least the necessary data. Long life to your car and tranquility of his owner! And let's rather get any model and there will be no problems !!! Subscribe to my blog, follow the updates ahead of a lot of cognitive and interesting, see you in the next article!

With any form of repair, it is often necessary to deal with unscrewing and twisting all sorts of bolts and nuts, which is not difficult to do, but the process of compensation itself can be slightly nervous. This fact, not an exception and in the case of repair work In engine vehicle. It would seem that this in this tightening of the bolts of the head of the cylinder block (GBC), took and snag, however, it turns out, not everything is so simple. Not every car owner is aware of the importance of the correct implementation of this procedure, and it may affect the stability of good work. power aggregate. Here we are with you today and find out why the driver know the procedure for tightening the GBC, what features of this technology and what rules should be adhered to when performing work.

1. Why knowledge of the Rules of Tightening GBC is so important for the driver?

The bulk of motorists does not even think about the need to comply with the sequence and adjustment of the torque of the cylinder head. However, we all should understand that when using the unsuitable technology of this process, you can easily obtain malfunctions in the engine's robot. This question, contrary to the opinion of some of the car owners, is not a cost-effectiveness, and therefore it is necessary to pay attention to a deeper study, especially if, often, you yourself are engaged in all repairs, without the help of hundred specialists.

As for the frequency of the tightening process, most often, it is resorted to it when they want to prevent the appearance of moisture or condensate in the connecting places of the cylinder block and its head, Ie on the joints. Also, it will not be superfluous in case of detection of leakage (one of the most common causes) or when carrying out a motor repair by car owner, including the replacement of engine gaskets internal combustion. One more possible cause Tightening and adjusting the GBC, there may be a violation of the structure of the cylinder block or, when in consequence of the engine overheating, the cylinder head significantly pounds, which will also require appropriate repair.

Of course, if you have extra cash, I have nothing to worry about. It is enough just to drive up on the nearest one hundred, and there its employees will do everything they need (or even something is not necessary, the main thing is to contempt more money). Well, those who are interested in this topic, should know: Before dealing with the characteristics of the order of the block head, it is necessary to take into account the features of the parameters of this process for different models of cars.

If you, for example, have already performed similar actions on, you should not consider yourself a pro, because when working with CFC modern foreign cars, these knowledge and experience can not be useful at all. Tightening processes and broaching bolts of blocks of blocks, are performed in strict accordance with the requirements of the manufacturer, which are noted in technical documentation on repair and maintenance of each single engine.

Usually, such knowledge is charged when it is necessary to replace them or repair the power unit, and since it happens not so often, then in practice they have to be relatively rare. However, some masters, after repairing the head of the block, it is recommended to align the moment of tightening through a thousand mileage kilometers

2. General features of tightening technology CBC of different models of engines

The process of tightening the GBC, as well as other repair interventions in its work (for example, crimping) has its own characteristics and parameters for each model. That is why it is better to entrust the fulfillment of all actions by qualified workers who have certain skills and practice of tightening bolts of the CCC.

I must say that preventive broaching data of details, which was so popular in the past decades and was used mainly on motors domestic cars (After the overhaul of the power unit or the head of the cylinder block), today is no longer relevant. On produced modern vehicles, To mount the head of the block, use self-tight (spring) bolts and after the first tightening, repeating the action does not make sense.

Moreover, since the design of these parts does not provide for the execution, then such an action can only harm the quality of the bolts. Accordingly, if earlier, the execution of the broach was the mandatory component of any inspection, then in our time, this item can be applied except for outdated models of vases, gases and Muscovites.

3. Basic tightening rules

As already mentioned, the parameters and characteristics of the process of tightening the GBC in different models of engines differ significantly. However, there are a number general ruleswhich can be used during working with any of them. These include the following items:

The use of the manufacturer of the order (circuit) of the tightening of the cylinder head bolts and the torque force torque is a prerequisite for the quality of the repair.

In the course of the tightening of the GBC, it is necessary to use only a good and proven torque wrench. The usual wrench is not suitable for these purposes. Also, you should not rely on a personal eye and hope for muscle memory.

Replaceable cylinder cylinder bolts must be in perfect condition. (Mandatory requirement !!!). Apply old or cut parts - it is categorically not recommended. Also, do not forget to check the condition and purity of the thread before tightening. As for the "spring bolts", then they are disposable, and during re-use no longer will ensure the necessary tightening force, which result is fraught with the appearance of oil leaks from under the head laying.

When using TTY type bolts (used mainly on aluminum heads), it is categorically forbidden to carry out any nattering or suspension. This type of bolts is not related to the moment of tightening force, as it is delayed in accordance with the installed degree. More detailed information must be provided in the manufacturer's instructions.

Buying a gasket for the GBC, pay attention to the presence of the manufacturer's specification, in which it is usually indicated exactly exactly the moment of tightening force can be applied relative to this type Gaskets. These data are very important, since the results of the torque of the motor should not, much dispels with the data relating to the moment of tightening the gasket.

If there is a "blind" hole for a bolt for fastening a cylinder head, try not to pour the oil, pouring it before the tightening head, otherwise, the bolt will not be able to reach the end. If this is a hole through, and the second end it goes into the cooling system, then before spinning the bolt, lubricate the thread with a plastic sealant.

When performing the cylinder head bolts (let us accept exactly such a decision), pay attention to the fact that the engine with the cast iron head is produced at a minimum temperature of about 800 (as called "on hot"), and the engine with aluminum GBC - on cold.

Repair of the head of the cylinder block (GBC) is an important process that determines the operation of the engine and the car. BUT tightening cylinder - This is one of the key points. general repair node. From high-quality and proper tightening of the cylinder head depends reliable, correct and economical operation of the engine.

What is affected by the tightening of the head of the cylinder block

Such a job (tightening) is done when the reverse process for assembling the car motor is carried out. And how correctly, the cylinder head bolts are securely and firmly tightened, can strongly affect the operation of the combustion chamber, the gas distribution mechanism and the motor as a whole.

If the head of the cylinder block is tightened incorrectly, or not in the sequence, or weakly, it may entail the puncture of the gasket, which is installed between the GBC and the cylinder block. After damage to the laying of the consequences, it is difficult to predict correctly. Most often after such water from the cooling system hits motor oil. It turns out an emulsion that is much worse than engine oil lubricates the engine parts, and therefore the motor can quickly "jam".

In addition to getting water into engine oil, the engine power will decrease sharply, the sound of the motor, etc. In any case, there will be nothing good after the wrong tightening of the cylinder head.

To with sufficient effort to tighten the cylinder head bolts, be sure to use a special tool, in this case it is a dynamometric key. He has a special scale that will allow you to determine the effort with which you need to make a tightening of the cubs of the GBC. For each motor, there are tightening parameters for each motor, you will learn from the engine repair manual of this machine.

Next, we will try to explain in detail and demonstrate in the photo key points, how to securely and securely tighten the cylinder head bolts to provide for a long time reliable and properly operation of the car engine.

Instructions for tightening bolts GBC

As mentioned above, for tightening the head of the cylinder block, we use exclusively with a torque wrench. Rozhkov or precipitant keys cannot be tightened with the CBC with the desired effort, even if you use additional tools, lomik or pipe.

A dynamometer located near the handle shows which force was applied when tightening, and this requirement should be performed exactly. A small deviation is allowed from the requirements, about 0.5 kg / m.

After you took a torque wrench, remember the second requirement - the order of tightening bolts (nuts) of the cylinder head of the cylinder head. The order is a specific scheme that must be strictly performed.

The first central nuts (bolts) are tightened, and then gradually go to the edge of the GBC.

There are several head tightening schemes, and they are all correct. The main thing is to comply with the "Iron" rule: tighten the bolts (nuts) pairs from the center to the edges. And do not try to delay completely completely, so you can skew the head. Tightening in three stages: First, the bolts (nuts) are slightly tighten, then pull it hard, and then finally tighten. For the first tightening, the key dynamometer put up 3 kg / m position, further-more. Intermediate tightening must be "voiced" with characteristic crackling. This sound means that the nut (bolt) will reach correctly. Experienced mechanics are recommended to make a tight bolt (nuts diagonally).

After that, finally tighten the GBC, and the motor can be operated. The dynamometric key is set to the maximum position that the repair manual requires this car.

Important! After clicking, with the final tightening, the bolts (nuts) can not be further! This will lead to a breakdown of the thread.

After tightening the head of the cylinder block, let it "stand out." In order not to lose in vain time, you can still fasten the collector, and the other dismantled equipment, stretch the chain, etc. After waiting 30-40 minutes, make a test tighten.

The fact is that the gasket that is set between the head of the cylinder block and the engine itself itself has the property "sit down", that is, filling out irregularities and grooves that are on the surfaces of the CCC and the block, although they are not noticeable with the naked eye. If the control tighten is to ignore, then in the near future the gasket "sell", and repair the engine will have to be repeated.

The head of the cylinder block is the most important part in the car engine. It is located on the top of the cylinder block, performing a large role in the engine engine. The GBC is melted from an aluminum alloy, the mounting to the cylinder block is obtained strong due to special fastening bolts.

The direct repair of this part spend thoroughly, if you do not comply with the tightening rule, you can disrupt the tightness of the connection of the cylinder bolt and the block. Some car owners independently perform repair GBC, neglecting the rules, due to which the tightness of the compound is lost, oil flows, the gasket breaks through, and sometimes even decreases the compression in the engine. Do not neglect the rules and requirements when installing the CBC.

It is also worth remembering that excessive force when tightening in some cases causes the deformation of the housing itself. When tightening the cylinder head bolts, observe the tightening of the wheel bolts, follow the circuit and tightening technology.

When it is necessary to tighten the cylinder head

Many modern cars no longer require tightening bolts GBC, but the old models of domestic auto industry need a timely tightening, especially before the technical inspection of your car.

If you open the car's hood and see that moisture accumulated in the cylinder head bolts, urgent tightening of the bolts. Lubrication leak can cause moisture in these places.

The disturbed structure of the blocks leads to the relaxation of bolts. Most often, the violation of the structure is due to the engine overheating, with which it also needs to be understood.

The disturbed tightness of the GBC is a common cause of the violation of the proper tightening of the bolts. The moment of the tightening of the bolts is recommended to produce the passage of the machine of a certain kilometer.

After carrying out repair work related to the engine and engine cylinder, it is necessary to drag the cylinder block bolts.

Previously, the tightening of the bolts of the GBC was carried out directly on the first technical inspection Machines, new cars are less and less exposed to this manipulation.

Tightening the cylinder head bolts

It depends on the version of your car, on the old domestic machines there are only two of them, on more modern versions already 4. Deciding on an independent tightening bolts of the GBC. Prepare a fairly warm room, or if you are going to make repairs in the warm season, select a day with weather conditions when the temperature It reaches more than 20 degrees of heat. If they are repaired during the cold season, prepare a heated room in which it will be convenient to work.

When repairing work, do not forget to clean all bolts, compounds from dirt, oil surplus, especially if the design flowed. After each tightening manipulation, it is desirable to wait 20 minutes until the metal will come to the original shape to avoid overheating and deformation of the metal housing.

It is advisable to see the moment of tightening on the GBC of your car in the original directory of your car or learn from an experienced mechanic competent in these issues. Be sure to climb the model and year of release of your car to not be mistaken.

Observe the correct procedure for tightening the GBC bolts, otherwise the work will have to redo, your efforts will be in vain.

How to spend the tightening of the GBC

First of all, find the original manual for your car. Even if you bought a car from hand, you can find a guide to use on the Internet. Carefully examine everything you need when a GBC is a drawing, namely:

• what are you needing bolts for tightening the GBC;
• what a tightening force requires a separate moment (for everyone you need different strength);
• the procedure for tightening the GBC.

IN modern cars Special spring bolts that do not require additional tightening, pay attention to it. Such details at an effort and an attempt of their tightening can not only be deformed, but also damage the details located nearby. Be careful, be sure to find out which bolts are on your car.

During repair work, put a special gasket that do not give a bolt shrinkage, it will eliminate the need to pull bolts.

For self-tightening moments, it will necessarily need a special key, which will have to do with an accuracy of millimeters that the manufacturer indicates the instructions for the car. Forget about the thoughts that the tighter you will drag the bolt, the better it will stay and so on, in this case you will have to clearly follow the instructions, otherwise you risk damaging the car engine, which will lead to more expensive repair.

Dynamometric key work

At the beginning of the installation, set the dynamometric key to a position called with zero mechanics. This situation is the moment when the key readings are equal to the initial position of the bolt. Carefully look at the numbers at the time started fastener, remember, and better write down.

Slow and neat movements start twist the key and carefully follow the indicators, if the moment remains in the same place, then the fastener succumbed to stretching. If the moment changes dramatically, it means you need to seek the movement of the bolt. A sharp increase in the moment indicates that the holder is not fully stretched. Then the installation will have to make after stabilization.

If, when tightening the moment, the moment begins to decrease - the fastener is deformed, the replacement is inevitable.

Riding on country roads immediately after the route destructive affects engines of domestic cars. When driving the engine, the machine is constantly heated, it cools, which is badly affected on high-quality mount. Bolts are smaller, which leads to breakdowns, oil leaks. Sharp temperature differences negatively affect the proper mounting of the bolts. Responsibly refer to the replacement of this small but important piece of car.

Here is a table of moments that cannot be exceeded when tightening.

How to control tightening torque

There are special methods for monitoring the proper tightening of bolts so as not to overdo it in this matter and not tighten them. Apply the moment to the bolt, which is equal to the moment of stroking the bolt, namely, at the beginning of the turn, control the moment of the bolt stroke. When the moment does not increase, you perform everything correctly, the bolt began stretching.

When you apply the wrong moment, the stretching bolts may not be obtained, therefore it is worth it to follow the sources where it is said which moments on which bolts need to be applied. These requirements are explained by the work of the cylinder block, each of the cylinders operates in constant heating and cooling mode.

In conclusion, I would like to wish to solve the repair of GBC, patience and good luck in this complex business. Remember all the nuances of the procedure, do not neglect important rules on repairing your own car.

Each car owner who has encountered the repair of the cylinder head, after completing the task, you will have to put this item in place. This procedure implies. If you do not do this, the tightness of the unit can be disturbed. Below we will examine how the moment of tightening the block of the VAZ 2106 is most important and what to take into account when installing the device.

[Hide]

When do you need to make a tight?

To begin with, consider in what cases you need to draw a bolt of the head of the engine cylinder block of the car VAZ 2106:

1. If motor oil comes out from under the GBC. The problem indicates damage or natural wear of the block head laying. It is necessary to remove and replace the seal. The leakage may also be associated with the weakening of the bolts on the GBC. On the presence of the problem indicate oil stains, which appeared in the place of connecting the head with a motor block.
2. After repairing the power unit. If you shot fasteners in the Niva car or any other and moved the engine, then for successful assembly, you should consider the order of the battery and the scheme, as well as the power of tightening screws.
3. For prevention. Experts recommend tightening the bolts on the cylinder head every 2-3 thousand kilometers of run. When the engine operates in vibration conditions, it may cause screws, so they must be periodically checking and stretching in compliance with the effort.

Channel Garage Ilyich unveiled a video that will dismantle in the process of pulling the bolts of the block head on the "six".

How to tighten?

It is possible to stretch the bolts with the help of specialists or yourself. If you have never come across the need to perform this task, then we will analyze below how much the screws should be twisted and in which sequence do it.

Meet the torque of the tension, because if the block head bolts are pulled, it will lead to cracks and damage to the GBC. If this happens, the car owner will have to perform the overhaul of the aggregate. Working surface hole as well threaded compound The screws must be as clean as possible. You can use the iron wire brush to clean the cylinders. If during the task you detected "blind" holes for head screws, then carefully use the handling lubrication. If the volume of the substance is greater than required, it will occur with the installation of the pin until it stops.

Before performing a tightening, it is necessary to make visual diagnostics of the state of the bolts. If the fastening elements are damaged or worn, their quality is generally low, it is better not to stretch with these screws, it is recommended to change them to new ones.

Tools and materials

To cover the GBC, prepare only one tool - a dynamometric key that will determine the power of tightening screws. Buy the key is best in a specialized store or rent a service station, since this tool can only be used for twisting and tightness. Operation of a conventional wrench will not allow you to determine how much kilogram is the tightening force.

Channel "Engine repair! And interesting! " Announced a roller, where all the nuances of the execution of the stretch process are described.

Algorithm of action

Priority and force needed when you will pull the cylinder head bolts:

1. In accordance with the scheme placed below, make the tension of all bolts using a dynamometric key. Tightening torque on the first round of fastening tightening will be about 3.5 - 4.1 kgf / m. First, the bolts are stretched, which are located in the center of the block head - from above and below. After that, two upper and lower fasteners are screwed, installed on the side of the screws located in the center. Then stretch the two extreme bolts. Please note that you first need to pull the left pins, and then right. Screw at number 11, located at the bottom left, do not touch.
2. This is the first tilt circle. At the second stage, the bolts are tightened in a similar order. Only the force with which the fastening elements are tensioned will be 10.5 - 11.5 kgf / m.
3. At the third stage, the bolt is tension, which is marked with number 11 in the diagram. The power of tightening this screw must be 3.5 - 4.0 kgf / m.