VAZ-2107: replacement of a lining of a head of the block of cylinders. Description and features of the procedure

The internal combustion engine consists of several parts. This is the head, the block and the oil pan. When the motor is running, a huge amount of heat is released. To cool it, the blocks have a coolant jacket. Also, the motor needs lubrication. It moves through special channels. To ensure that these two components are not mixed together, calcination is provided. In today's article, we'll talk about how the VAZ-2107 car is replaced with a cylinder head gasket . Also consider the signs of this malfunction.

When should I change?

Note that the replacement of the cylinder head gasket on the VAZ 2101-2107 by its own hands is infrequent. The manufacturer does not regulate the period of its replacement, since the part is installed for the entire service life. However, there are times when it burns out. How to determine this fault? The first sign is the motor overheating. The second is to flow at the junction of the block and the head. From here, you can run both antifreeze and oil. Also these two liquids are mixed in the expansion tank. When the engine is running there are small gas bubbles in it. All these signs indicate that the car needs to replace the gasket under the head. VAZ "Classic" is a simple car in the device. Therefore, you can do this yourself.

Instruments

What do we need to replace? During the works we need the following tools:

• The key is 10.
• A set of heads with a diameter of 13, 17 and 19 millimeters.
• Ratchet wrenches.
• Extension pieces.
• Torque wrench.
• Capacity for draining the coolant.
• Screwdrivers.

Disassembly

So, where does the replacement of the cylinder head gasket start on the VAZ-2107? First, remove the air filter with a round metal casing (shown in the photo below). Further, unscrew and take out the carburetor. After that, they start dismantling other attachments. This distributor of ignition and high-voltage wires. Then coolant is drained from the engine. It is necessary to prepare a clean container with a volume of at least 7 liters.

Drain the antifreeze correctly

On the VAZ-2107, replacing the cylinder head gasket is relatively quick. However, most of the operation will take the drain of the old antifreeze. The fact is that on the "classic" there is no customary for everyone a drain cock. There is a "cork" here. How to make this procedure correctly? So, we need a capacity and a meter of rubber hose with a diameter of not less than 1 centimeter. One end of it leads to the drain plug. The other side quickly leans the hose to the hole. So the antifreeze will be poured into our tank. You need to be careful not to spill the antifreeze on your hands.

What's next?

How is the replacement of the cylinder head gasket VAZ-2107? In the next step, we need to dismantle the valve cover. It is fixed to 8 bolts. It is important not to lose the clamping washers - they will still be useful for assembly. The next step is to remove the timing element, namely the chain drive and gear. To do this, loosen the tensioner and use the key to release the lock nut. Now the chain should loosen. Now we disassemble the gear. It is attached to the camshaft on the lock washer. Using a screwdriver and a hammer, bend the stopper and unscrew the element outwards. By the way, the chain does not need to be completely removed. The main thing is that it does not fall down. To do this, it is tied with an improvised tool (for example, a wire).

How is the cylinder head gasket replaced ? VAZ-2107 continues to stand still, and we proceed to dismantle the camshaft. To do this, unscrew the 9 fixing bolts. After disconnect the intake pipe that goes to the exhaust manifold. It is mounted on 4 brass nuts. If your pipe is screwed to ordinary steel, there is a risk of tearing the hairpin. Be extremely careful. In the presence of rust or dirty plaque, use universal lubricant VD-40.

Remove the head

Now we have to remove the head of the block. To do this, we pick up a powerful wrench and unscrew 10 fastening bolts in a circle. An important point - at the low tide of the head is the 11th bolt. It's small. We also extract it. Gently pull the element and take it out.

Installation

So, in front of us - the opened head of the block. We have only to remove the old gasket and install a new one in its place. It is important to thoroughly clean the surface of its contact. If this is not done, through the small channels, the oil will seep into the adjacent chamber and mix with the antifreeze. Specialists recommend using a special spray. It is called "to remove gaskets". Its cost is about 400 rubles. The volume of 300 ml is enough for several receptions. The instruction for use is quite simple. It is necessary to apply a spray to the surface of the block and after ten minutes remove the remnants of the element with a clean piece of rag. The new gasket already has a red silicone sealant. It remains for us to establish it in the right place. With the help of two guides, the center element in the block. Now it remains only to assemble the engine.

Assembly

Pay attention to the moment, like tightening the cylinder head. A lot will depend on this operation. If you do not follow the force, the gasket will burn and the engine may boil. Therefore, experts recommend using a torque wrench (see the figure below). The bolts are tightened according to a special scheme - from the middle to the edges. The force of the first tightening is 4.1 kg per meter. The second one is 11.45. This is about the ten big bolts. And what about the small, the 11th? Here the tightening rate is 3.8 kgf / m. If you have a key calculated for the parameter Nm, the first tightening requires a value of 40 units. The second is produced with an effort from 95 to 117 Nm. After the VAZ-2107 was replaced with the cylinder head gasket, it is necessary to install the camshaft and the split gear. It is important to adjust the timing. Yes, on the 8-valve engine, the pistons do not touch the "plates". However, there will be significant misfiring (up to the point that the engine simply does not start). This replaced the cylinder head gasket VAZ-2107 successfully completed. You can make the first start and check the operation of the motor. Do not forget to pour the antifreeze into the system.

Conclusion

So, we found out how the head of the VAZ-2107 cylinder block is being disassembled and assembled. Spare parts for VAZ (especially if it is a classic model of the "seven" type) are cheap. Therefore, such an operation as replacement of the block laying can be performed for quite budgetary money (up to 500 rubles). Of course, provided that you carry out the procedure yourself. The most important thing is tightening the bolts. Do not perform this procedure by sight. You either do not reach for the bolt, or you'll ruin the hairpin. Remove the latter will be very difficult (except that grab it with welding and gently twist along the thread).