Repairing a cylinder head cannot be called a simple procedure, which requires certain skills and some experience. Repairs require special tools. As a rule, during this work the gasket is changed and the cylinder head tightening torque is adjusted: VAZ 2109 in our case. In order for the adjustment to be performed correctly, you must strictly follow the instructions. With a competent approach, you will successfully carry out the adjustment, achieving the desired result.
The majority of today's cars do not need tightening of the head bolts, but on the VAZ 2109, it is required at least to undergo maintenance.
If moisture begins to accumulate in those places where the block comes into contact with the cylinders, then this is a sure sign that urgent tightening of the bolts is required. Moisture in the above areas is a sign of a lubricant leak. The main reasons for tightening bolts are:
- damage to the cylinder head due to engine overheating;
Cylinder head
- loss of tightness of the cylinder head gasket;
- the mileage specified in the instructions has been completed.
Adjusting the bolt torque
In order to do everything correctly and avoid mistakes, you must strictly adhere to certain rules and follow the order of execution.
Tightening should only be done with a special torque wrench, which allows you to control the tightening torque.
First, using a torque wrench, set the holder to the zero position. This means that the device data is equal to the moment of the original position. Then, you need to look at the indicator of the device when starting the fastener. Rotating the holder, we monitor the indicators. If the moment has not changed, this means that the fastener can be stretched and this is normal, as it should be. If the torque increases rapidly, bolt movement must be achieved. This indicates low stretch of the holder. This means stabilization is needed.
While the vehicle is running, the bolts that secure the cylinder head are constantly experiencing various impacts. They constantly heat and cool, which over time leads to the destruction of the structure of the fasteners.
For all power units there are specific rules that must be followed during operation:
- Strictly follow the data specified in the practical manual for the VAZ 2109.
- Adjustment is carried out only with a torque wrench. The use of another device will not allow this work to be performed correctly.
- Use only good bolts.
Replacement bolt kit
The most important data regarding adjustments is in the annotation for each specific car. As a result, you must carefully study and adhere to what is written in it. During operation of the vehicle, you must strictly comply with all manufacturer's requirements and systematically diagnose the car. Correct and smooth operation of the VAZ 2109 power unit prevents the need to adjust the cylinder head holders.
Since the cylinder head of the VAZ 2109 is a complex unit, it is necessary to carry out repair work only with absolute confidence in your actions. Strictly observing the order of work. If a deviation in the operation of the motor is detected, immediately carry out diagnostics. This will avoid more expensive repair work.
Required Tools
Tightening diagram
The cylinder head tightening pattern is the same as on traditional models and you need to start from the center. It takes place in four steps.
The diagram according to which the VAZ 2109 should be pulled
- tightening torque 2.0 kgf/m
- tightening torque 7.5 - 8.5 kgf/m
- turn it 90 degrees.
- turn it again by 90 degrees.
To make it clearer, let’s describe this process in more detail:
- Using a torque wrench, tighten the bolts in the sequence shown in the figure to 2.0 kg/cm.
- Then we go around the second circle and reach 8 kgf*m.
- Next, twist it 90 degrees.
- We go around the second circle, twisting another 90 degrees.
Proper lift
Attention! On 16-cl power units, bolts can be reused, but if their length is no more than 95 millimeters.
Otherwise it changes. The length is measured along with the washer. Do not try to replace the torque wrench with another device, otherwise the consequences may be unpredictable.
Installing a new part
The new part to be installed must be undamaged, dry and clean.
When installing, you need to make sure that the hole intended for the passage of oil is located between the third and fourth cylinders.
Before installing the cylinder head, be sure to ensure that the valves of the first cylinder are closed. The bolts must be tightened according to a certain pattern, in four stages.
We specify the tightening torque of the cylinder head bolts during the installation process
The cylinder head (cylinder head) is the most important component in the car engine system. The process of tightening the cylinder head bolts will be within the capabilities of a car enthusiast with certain skills. To work, we need a special tool and self-confidence. The instructions provided will help you cope with the task and avoid common mistakes.
First, let's determine in what cases it is necessary to tighten the bolts.
Most modern cars do not require cylinder head bolts to be tightened. On earlier car models (for example VAZ 2109), it is necessary to tighten the bolts in a timely manner in order to successfully pass the technical inspection.
As a rule, the accumulation of moisture in the places where the block comes into contact with the cylinders indicates the need to tighten the bolts. The reason for the appearance of moisture in these places may be a leak of lubricant. There are several most popular reasons for tightening bolts, including:
- Violation of the block head structure. Such consequences most often result from engine overheating.
- Cylinder head gasket leak. This fact also indicates the need to tighten the bolts. It is recommended to adjust the tightening torque after passing a certain mileage and without fail, after repairing the cylinder head.
Replacement procedure
The replacement process occurs as follows:
- First you need to disconnect the battery; to do this, remove the negative terminal.
- You need to disconnect the exhaust pipe from the muffler.
- We dismantle the carburetor.
- Next, you need to disconnect all the sensor terminals, and all the wires are disconnected from the spark plugs.
- The next step is to disconnect the vacuum booster from the intake manifold.
- The distributor sensor is disconnected.
- Disconnect the high-voltage wires.
- Unscrew the nuts and remove the sensor.
- The fuel pump and the housing of auxiliary devices are dismantled.
The roller and timing belt are removed.
- The pulley is dismantled, after which you need to remove the timing cover.
- Disconnect the hoses and unscrew the cover nuts.
After this, all that remains is to unscrew the bolts and remove the block head. After removing the old gasket, you need to carefully inspect the contact surfaces of the head and cylinder block. There should be no dirt or residue from the old gasket on them. All obvious signs of contamination must be eliminated.
How to adjust the tightening torque of VAZ 2109 bolts.
Before starting work, you must familiarize yourself in detail with the original instructions for the car (VAZ 2109). The included manual will tell you the details of tightening the bolts according to the manufacturer's requirements. Depending on the specific brand of car, the work may include important details. It is necessary to pay tribute to the manufacturer's advice and take them into account during the work.
In order to properly tighten, you need to acquire a certain set of knowledge. To successfully tighten the bolts, you can take into account:
- The procedure for tightening the cylinder head bolts is according to the VAZ 2109 manufacturer’s diagram.
- Moment of tightening force.
- Knowledge of bolts that need to be adjusted.
Since most modern cars do not provide additional tightening, the bolts have certain characteristics. In this case, the manufacturer implies exclusively factory adjustment of the bolts. Therefore, after repeated exposure, the structure of the bolts is disrupted. With outside intervention, the bolts quickly become unusable. Subsequently, they may rupture.
In order to avoid adjusting the bolts, on earlier car models (VAZ 2109 or similar models), it is necessary to properly repair the cylinder head. Work on the cylinder head requires a mandatory replacement of the cylinder head gasket. In this case, it is necessary to use gaskets to prevent shrinkage. This way you can eliminate the need to retighten the bolts.
If tightening the bolts is still required, you must strictly follow the manufacturer’s recommendations. When carrying out work, it is necessary not to deviate from the original instructions. For correct adjustment, it is necessary to strictly and confidently follow the sequence.
Articles
Before you start replacing the gasket, you should purchase this gasket. Although any car store will select a suitable spare part for you, it is better to know its part number. The most suitable gaskets for the VAZ-2110 are:
- The original VATI gasket, which has the article number 21083100302020.
- Part VICTOR REINZ. This item is of higher quality than the original. Its article number is 613666000.
- TRIALLI gaskets, which have the article number GZ.
It’s better to immediately buy a better quality spare part than to bother with disassembly again later.
Compliance with the tightening torque of the cylinder head bolts.
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To control the process, it is necessary to follow a certain technique. In this way, the process can be controlled, preventing errors. To do this, you need to use a special key. A torque wrench will allow you to control the tightening torque.
First of all, using a torque wrench, set the holder to the zero position. This means the readings of the device are equal to the moment of the initial position of the holder. Now, you need to pay attention to the device indicator at the moment the fastener starts. We begin to twist the holder and look at the indicators. If the moment remains unchanged, then the fastener is tensile. This is the norm. If the torque increases sharply, it is necessary to achieve movement of the bolt. This fact indicates insufficient stretching of the holder. In such a situation, adjustment is made after stabilization.
Afterword
Before reassembling the unit, it is necessary to check the condition of all the bolts. If there is the slightest discrepancy, it will be necessary to replace it. It is important to understand that otherwise a good result will be unattainable.
Also, you should not put off replacing the gasket, since such a minor problem will later result in the need to repair the entire power plant. In severe cases, the entire engine may need to be replaced. We also suggest watching the video tutorial:
Source
Basic rules for adjusting cylinder head holders.
tightening the cylinder head bolts
Regardless of the characteristics of the engine of a particular car, there is a general set of rules that must be followed during work. It is necessary to strictly follow the parameters specified in the manufacturer's instructions. The work should be carried out using a torque wrench. Using an analogue may lead to undesirable results. Only bolts that are in good working order can be tightened. Before starting work, carefully check the condition of the holders. Tightening torque indicators must be strictly taken into account and not deviate from those specified by the manufacturer. When repairing the cylinder head of a VAZ 2109, you should follow the tightening instructions specified in the included instructions.
Most of the particularly important features of bolt adjustment are indicated in the instructions for a particular car. Therefore, it is necessary to carefully study the operating and maintenance manual of the machine. When operating a vehicle, comply with the manufacturer's requirements and regularly maintain the vehicle. Correct engine operation prevents the need to adjust the cylinder head holders.
cylinder head tightening wrench
Since the cylinder head has a complex structure, it is necessary to carry out repairs only with full confidence in your knowledge. If problems arise in the operation of the car engine, it is necessary to promptly carry out professional diagnostics. Thereby, you will prevent large-scale car repairs and high costs.
A short video about how not to repair the cylinder head:
Repairing the cylinder head is a complex procedure that requires a sufficient amount of knowledge and certain experience. To carry out repairs, special equipment is used, which is usually available only in specialized service centers. Repairing the cylinder head involves changing the cylinder head gasket and adjusting the torque of the bolts. For correct adjustment, you must strictly follow the requirements specified in the instructions reviewed. Follow the manufacturer's specifications and use quality tools. With a careful approach, you can successfully make adjustments, obtaining the desired result. Happy renovation!
What is needed to replace the cylinder head gasket of a VAZ 2110 (8 valves)
Required tools :
- ratchet with 10mm socket heads; “at 13”, “at 17”, “at 19”;
- wrench with Torx bit;
- screwdriver;
- torque wrench;
- wrench for removing spark plugs.
Suitable accessories :
- the TRIALLI gasket set has article number GZ1017022, its price is 500 rubles ;
- The VICTOR REINZ cylinder head gasket has article number 613666000, its price is 280 rubles ;
- The original VAZ (VATI) cylinder head gasket has article number 21083100302020, its price is 140 rubles .
The price of gaskets is relevant for the summer of 2017 for Moscow and the region.
Set the piston of cylinder 1 to the TDC position on the compression stroke. We fix the camshaft toothed pulley from turning with a clamp. We unscrew the candles.
A) Using a 10mm wrench, unscrew the two nuts securing the throttle drive cable bracket to the receiver and remove it. B) Remove the crankcase ventilation hoses and the supply hose from the valve cover fittings. C) Using a 10mm wrench, unscrew the two nuts securing the valve cover and remove it.
Using a 10mm wrench, unscrew the bolts of the front timing cover: two on the side and one in the center. Remove the timing cover.
We check the coincidence of the mark on the camshaft timing pulley with the installation antenna on the rear cover of the timing drive. Using a 17 key, unscrew the pulley.
Using a 10mm wrench, unscrew the nut securing the protective casing and bend the casing.
We see that the timing belt also requires replacement.
Disconnect the oil level pressure sensor connector.
Using a 10mm wrench, unscrew two nuts and one bolt securing the plug. Evenly, using a 13mm wrench, unscrew the six nuts securing the rear camshaft bearing housing. Remove the rear camshaft bearing housings from the studs.
Then, also evenly and using a 13mm wrench, unscrew the four nuts securing the front camshaft bearing housing and remove it.
Unscrew the four nuts securing the muffler to the exhaust manifold.
Using an E14 Torx head, unscrew the 10 bolts on the cylinder block and remove the block.
Do-it-yourself cylinder head broaching
Previously, pulling the cylinder head was a mandatory item during the first maintenance, but then the situation changed. Even relatively modern VAZ engines. Broaching the cylinder head is mainly required today for older models of VAZ, UAZ, Moskvich, etc. engines.
The main reason that prompts a car owner to think about the need to tighten the cylinder head is “wet” at the junction of the head and the block. This indicates an existing oil leak.
There may be several reasons. The most traditional: failure of the cylinder head gasket. warping of the cylinder head as a result of engine overheating unnoticed by you, or initially incorrectly tightened cylinder head bolts. If you had a capital repair done at a car service center.
In fact, many craftsmen recommend it after repairing the cylinder head. in a thousand km. adjust the tightening torque.
Signs of a broken gasket
You can find out that the seal of the connection is broken for the following reasons:
- White vapor appears in the exhaust gases.
- You may notice oil stains in the antifreeze.
- Leak in cylinder head connections.
- There is a large amount of oil in the pan.
- You may notice foam around the filler cap.
Although it seems that it is very difficult to notice the vapors in antifreeze, this can be done by placing a bag over the neck of the open expansion tank. If there are gases in the antifreeze, the bag will inflate.
How to tighten cylinder head bolts
From studying. It is by studying the Repair Manual for your car, preferably the original one. It is there that the manufacturer indicates everything that is necessary to tighten the cylinder head. And you need to know:
- the procedure (diagram) for tightening the cylinder head bolts;
- what tightening torque is required;
- what bolts are used to tighten the cylinder head.
Bolts for tightening the cylinder head are a special matter. The fact is that in modern engines, bolts with special characteristics are used for the cylinder head. So-called “spring” bolts, which, due to their properties, do not require additional tightening after initial tightening at the factory.
Moreover, when trying to tighten the cylinder head bolts, due to the “fluidity” of the metal, they will be pulled out. As a result, you may end up with a broken bolt.
When repairing the cylinder head, it is necessary to install gaskets that do not shrink. This eliminates the need to tighten the cylinder head bolts.
But, if you have already decided that you absolutely need to tighten the cylinder head bolts, then you should do it with the “manual” from the manufacturer and using a torque wrench. Movement to movement, number to number. Amateur performance based on reserve is not needed here.
Replacement intervals for the cylinder head gasket on the VAZ-2110
The most important thing that interests owners is the replacement interval for this part.
It is very difficult to say how long a particular gasket will last.
- Manufacturer of the part.
- The quality of the material from which the gasket is made.
- The conditions under which these parts were stored.
Since the gasket is made of rubber, storage conditions directly affect its service life. For example, a part purchased at the market, which was stored for a long time in a damp and unheated container, will be worse than the same spare part purchased in a store.
The main function is to ensure maximum sealing of the cylinder block with the cylinder head. If you do not monitor the condition, the engine life will be significantly reduced.
