Replacement of a lining of a head of the block of cylinders VAZ 2109. VAZ 2109: removal and replacement of a lining ГБЦ

In this article, you will learn how to replace the cylinder head gasket VAZ 2109, as well as grinding the valves. Of course, if you do not have any repair experience, it will be very difficult to do this kind of work. It is worth noting that most drivers are simply afraid to climb into the engine, because they do not want to face difficulties. But if you look a little more closely, then no problems should arise if you study in advance how the repair process is as detailed as possible. Independent replacement of the gasket is possible if you have all the necessary tools, including a torque wrench. Without him, in this matter, you can not even step one step.

When does the gasket change?

And now it's worth talking about why the cylinder head gasket changes . Firstly, you can often purchase substandard products. Secondly, sometimes the reason for the replacement is a violation of the integrity of the gasket, resulting in the leakage of the antifreeze. And all the cooling fluid is mixed with the oil, resulting in a reduced engine life. This happens for various reasons, but the most frequent is the uneven tightening of the fastening bolts.

Often, exhaust gases begin to break through into the cooling system. At the same time, the antifreeze starts to be thrown out of the radiator. True, there is an expansion tank, which allows you to correct this trouble. In addition, the removal of the cylinder head on the VAZ 2109 is necessary in the event of a major overhaul of the engine. Also, when repairing the valve mechanism, it is necessary to replace the cylinder head gasket. And if it's easier, then at each removal of the cylinder head the gasket must change.

Preparing for replacement

In the carburetor VAZ 2109, replacing the cylinder head gasket is almost the same as in the injector. First, the wires from the carburetor are disconnected, two cables, from the rear part of the branch pipe. In other words, this is all that needs to be done when removing the carburetor. After that it is necessary to dismantle the ignition distributor. To do this, disconnect the chip with the contacts that connect the Hall sensor. Before you begin to conduct similar work, you need to disconnect the battery from the power supply system. Then remove all the armored wires, do not forget that there is also a hose that connects the carburetor to the vacuum corrector of the ignition. Thus the distributor of ignition there is no necessity completely to remove from the car, it is enough to remove it aside.

Draining the coolant

Now it's time to drain the coolant. This will require a capacity of about 10 liters, the key is 13. First, the liquid is drained from the radiator of the cooling system. Install the tank under the drainage hole, after that the plug is unscrewed, but do not forget that without twisting the plug on the surge tank, the liquid will not merge. In order to replace the cylinder head gasket with VAZ 2109, it is not necessary to completely empty the cooling system.

Then, a reservoir is installed under the drain hole, which is located on the internal combustion engine block. The plug is twisted by means of a key on 13. After you will merge antifreeze from system, it is necessary to remove rubber branch pipes. The uppermost one, which connects to the radiator, then the stove branch, and the last one is connected to the thermostat. If necessary, you can unscrew the duralumin insert on the engine block.

Further actions

In order to replace the cylinder head gasket on VAZ 2109, it is necessary to dismantle the fuel pump. To do this, disconnect the hoses from it, and then use a 13-key to unscrew the two nuts. Now you can pull out the stem of the gasoline pump and the plastic guide. The most difficult thing is the detachment of the exhaust manifold. It is necessary that the car was installed on the inspection pit. So much easier to carry out work. The bracket is removed at the very beginning, without this "pants" not to be dismantled. Twisted four nuts, which fastens the flange of the "pants". Loosen the clamp and remove the entire intake pipe. The oil pressure switch disconnects the wire, but it can be done on top of the car. Now it remains to work a little with the mechanism of driving the gas-distributing unit.

Belt timing

So, first the cover is removed, for this, three bolts are wrenched with a key for 10. After that, with a key on 17, loosen the tension roller. The belt can be removed from the camshaft pulley. Completely remove it is not necessary, it is sufficient to weaken and take it to the side. But the pulley must be disposed of, since it will interfere with the removal of the cylinder head. To replace the cylinder head gasket VAZ 2109 was made more efficient, you need to dismantle the pulley camshaft.

To remove the camshaft pulley, it must be pinched by two screwdrivers on the inside. Now the tensioning roller is completely removed and the hairpin with which it is fixed to the engine is twisted. We can say that this preparatory work is over. Now everything is ready to remove the head of the unit.

How to remove cylinder head

First you need to unscrew the two nuts that secure the lid. They are at the very top. After that, you can unscrew all bolts of the engine block head mounting. A total of 10, the key is needed hex. That's all, after removing all the bolts, you can remove the head of the unit. Please note that on vehicles VAZ 2109, 2108, 21099, the replacement of the cylinder head gasket is carried out according to the same scheme. However, even on dozens with an eight-valve engine, similar procedures are carried out.

Pay attention to the fact that with any dismantling of cylinder head it is necessary to change the gasket. Look at the old, what are the injuries, tears, burnout. If you have already removed the head of the unit, then do not be lazy to pay attention to the condition of the valves, saddles, guides, caps and other elements of the gas distribution system. If you timely repair this mechanism, then the engine will be very grateful to you.

Installing cylinder head

First of all, get a new gasket. Then it must be laid on the surface of the engine block. Please note that before installing the head, you need to purchase new bolts. The fact is that when tightened and subsequently heated, the thread on them deforms. As a result of this, repeated tightening can result in a malfunction of the engine, even its premature failure. Under this scheme, the cylinder head gasket VAZ 2109 is replaced.

Before installation, it is necessary that the threaded holes are perfectly clean. With the help of compressed air, remove dirt, oil and liquid from them. If foreign objects remain in these holes, it will not be possible to tighten the bolts to the end, resulting in leakage of exhaust gases into the cooling system. And this is at best, so removing and replacing the cylinder head gasket on VAZ 2109 is accompanied by the installation of all new fasteners.

Tighten all the bolts, this procedure is carried out in four steps. And the sequence must be observed. First you need to tighten at a torque of 2 N / m. At the second stage, it is necessary to increase the force to 8 N / m. The last two stages are turning the bolts 180 degrees into two sets (90 degrees each). But try not to overtake, as it is easy to break the thread or even break the bolts. Now everything is going back, new gaskets are installed under the lid and pants. This must be done, as oil leakage or etching of exhaust gases is possible. At this point, the replacement of the cylinder head gasket for VAZ 2109 is considered to be over, but it needs to be said a little about grinding the valves.

How to rub valves

To do this you will need a drill - at least manual, even electric, if only there was a function of reverse. Also, an old valve is needed, from which a small adapter must be made. It will need to be clamped in a drill. In addition, you need to get a small piece of strong rubber hoses. You also need to buy a lapping paste. Note that it can be of two types - for coarse and fine grinding. Also, it is worth considering that you need to put the valve on the saddle to which it was rubbed. Otherwise, the work will be completely broken. The tightness will not be between the valve plate and the seat. This work will also be required if the cylinder head is replaced. The heads of the cylinder block of the VAZ engine must be rubbed against the new valves.

Mandatory condition - the presence of a drill with a reverse. It is necessary to turn the valve in different directions evenly, so that the surfaces are as smooth as possible. It is worth noting that first a coarse-grained paste is used, and after it removes all small irregularities from the surfaces, it is necessary to wipe it and apply fine-grained. The latter will allow to clean the valve plate and the seat to a shine. Note that the grinding paste is an abrasive material, so its entry into the cylinder and other rubbing engine nodes is unacceptable. Work with grinding the valves away from the motor to prevent the paste from getting into the cylinders. In addition, be sure to clean after the end of the process.

conclusions

In the article you learned how a VAZ 2109 car is being replaced with a cylinder head gasket, a filler, a binder, repair, lapping of valves. Please note that to carry out engine repairs and replacement of gaskets it is necessary to have not only a tool, but also knowledge, without them you can only spoil everything. Try to work as carefully as possible during all activities, so as not to damage the elements of the systems. Please note that very often the cause of black smoke from the exhaust system and excessive oil consumption is a strong wear of the gland valves. And if your engine has such symptoms, then do not be lazy to replace these oil seals.