The cylinder head of the VAZ 21099 is usually removed to replace the gasket or block, or repair the valve mechanism of the piston group or the head itself. The need to remove the cylinder head may also arise in the case of an engine or a complete disassembly of the motor.
How to remove the cylinder head on the VAZ 21099 with your own hands
1. Disconnect the "negative terminal" from the battery.
2. Drain the coolant into a plastic container.
3. Disconnect the exhaust pipe from the exhaust manifold.
4. Now dismantle the receiver together with the throttle assembly (VAZ-2111), or the carburetor in the case of (VAZ 2108), as well as the intake and exhaust manifolds (remove the cylinder head without removing the manifolds).
5. On the VAZ-2111, it is necessary to disconnect the "mass" wires (they are attached to the left end of the head), remove the fuel rail with fuel pipes and nozzles.
6. Disconnect high-voltage wires from spark plugs, as well as connectors for coolant temperature and oil pressure sensors.
7. On the VAZ 2108, you will additionally have to remove the housing of auxiliary units, the ignition distribution sensor and the fuel pump.
8. Now remove the timing belt, then the tensioner, spacer and camshaft sprocket.
9. Unscrew the rear nut that secures the timing cover to the cylinder head.
10. Remove the cylinder head cover.
11. Using a Phillips screwdriver, loosen the clamps and, in turn, disconnect all hoses from the outlet pipe of the cylinder head.
In this article, you will learn how the VAZ 2109 gasket is replaced, as well as valve grinding. Of course, if you do not have repair experience, it will be very difficult to do such work. It is worth noting that most drivers are simply afraid to get into the engine, as they do not want to face difficulties. But if you look a little more closely, then no problems should arise if you study the repair process in as much detail as possible in advance. Self-replacement of the gasket is possible if you have all the necessary tools, including Without it, this business is simple and you cannot take a step.
In what cases is the gasket changed
And now it's worth talking about why the cylinder head gasket is changing. First, you can often buy low-quality products. Secondly, sometimes the reason for the replacement is a violation of the integrity of the gasket, as a result of which antifreeze leaks. Moreover, all the coolant is mixed with oil, as a result of which it decreases. This happens for various reasons, but the most common is the uneven tightening of the mounting bolts.
Often, exhaust gases begin to break into the cooling system. At the same time, antifreeze begins to be thrown out of the radiator. True, there is an expansion tank that allows you to fix this trouble. In addition, the removal of the cylinder head on the VAZ 2109 is necessary in the event of an engine overhaul. Also, when repairing the valve mechanism, it is required to replace And if it is simpler, then every time the cylinder head is removed, the gasket must be changed.
Preparing for a replacement
In carburetor VAZ 2109, replacement is carried out in almost the same way as in injection ones. First, the wires are disconnected from the carburetor, two cables, pipes from the back of it. In other words, this is all that needs to be done when removing the carburetor. After that, you need to dismantle the ignition distributor. To do this, disconnect the chip with the contacts that connect the Hall sensor. Before starting to carry out such work, it is necessary to disconnect the battery from the power supply system. Then you remove all the armored wires, do not forget that there is also a hose that connects the carburetor to the vacuum ignition corrector. In this case, the ignition distributor does not need to be completely removed from the car, it is enough to remove it to the side.
Coolant drain
Now it's time to drain the coolant. This will require a container of about 10 liters, a key of 13. First of all, the liquid is drained from the radiator of the cooling system. Install a container under the drain hole, after which the plug is unscrewed, but do not forget that without unscrewing the plug on the expansion tank, the liquid will not drain. In order for the cylinder head gasket to be replaced on the VAZ 2109, there is no need to completely empty the cooling system.
Then a container is installed under the drain hole, which is located on the internal combustion engine block. The plug is unscrewed with a key of 13. After you drain the antifreeze from the system, you need to remove the rubber pipes. The top one, which is connected to the radiator, then the stove pipe, and the last one, which is connected to the thermostat. If necessary, you can unscrew the duralumin insert on the engine block.
Further actions
In order for the cylinder head gasket to be replaced on the VAZ 2109, it is necessary to dismantle the fuel pump. To do this, disconnect the hoses from it, and then unscrew the two nuts with a 13 wrench. Now you can pull out the fuel pump rod and the plastic guide. Now comes the hardest part — disconnecting the exhaust manifold. It is necessary that the car was installed on a viewing hole. This makes the job much easier. The bracket is removed at the very beginning, without this the "pants" cannot be dismantled. Four nuts are unscrewed with which the flange of the "pants" is attached. Loosen the clamp and remove the exhaust pipe completely. The wire is disconnected from the oil pressure sensor, but this can also be done from above the car. Now it remains to work a little with the gas distribution unit drive mechanism.
Timing belt drive
So, first the casing is removed, for this, three bolts are unscrewed with a key of 10. After that, with a key of 17, loosen the tension roller. The belt can be removed from the camshaft pulley. There is no need to completely remove it, just loosen it and take it to the side. But the pulley must be disposed of, as it will interfere with the removal of the cylinder head. In order to make the replacement of the cylinder head gasket VAZ 2109 more efficient, it is necessary to dismantle the camshaft pulley.
To remove the camshaft pulley, you need to pry it with two screwdrivers from the inside. Now the tension roller is completely removed and the stud is unscrewed, with which it is attached to the engine. We can say that this preparatory work is completed. Now everything is ready to remove the head of the block.
How is the cylinder head removed
First you need to unscrew the two nuts that secure the cover. They are at the very top. After that, you can unscrew all the bolts securing the head of the engine block. There are 10 of them in total, a hex key is required. That's all, after removing all the bolts, you can remove the block head. Please note that on VAZ 2109, 2108, 21099 cars, the cylinder head gasket is replaced in the same way. However, even on dozens with an eight-valve engine, similar procedures are performed.
Please note that with any dismantling of the cylinder head, it is necessary to change the gasket. Look at the old one, what damage, tears, burnouts it has. If you have already removed the head of the block, then do not be too lazy to pay attention to the condition of the valves, seats, guides, caps and other elements of the gas distribution system. If you repair this mechanism in a timely manner, then the engine will be very grateful to you.
Cylinder head installation
First of all, get a new gasket. Next, it must be laid on the surface of the engine block. Please note that before starting the installation of the head, you need to purchase new bolts. The fact is that when tightening and subsequent heating, the thread on them is deformed. As a result, re-tightening can result in a malfunction of the engine, even its premature failure. According to this scheme, the cylinder head gasket VAZ 2109 is being replaced.
Before installation, it is necessary that the threaded holes are perfectly clean. Use compressed air to remove dirt, oil, liquid from them. If foreign objects remain in these holes, then it will not be possible to fully tighten the bolts, as a result of which exhaust gases will leak into the cooling system. And this is at best, therefore, the removal and replacement of the cylinder head gasket on the VAZ 2109 is accompanied by the installation of all new fasteners.
Tighten all bolts, this procedure is carried out in four steps. Moreover, 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 in two passes (90 degrees each). But try not to overtighten, as you can easily strip the threads or completely break the bolts. Now everything is going back, new gaskets are installed under the cover and pants. This must be done, as oil leakage or exhaust gas pickling is possible. This is considered to be the end of the replacement of the cylinder head gasket VAZ 2109, but you need to say a little about lapping the valves.
How to grind valves
To do this, you will need a drill - at least manual, at least electric, as long as there is a reverse function. You also need an old valve, from which you need to make a small adapter. It will need to be clamped into a drill. Also, you need to get yourself a small piece of durable rubber hose. You also need to purchase lapping paste. Please note that it comes in two types - for coarse and fine grinding. It is also worth considering that you need to put the valve on the seat to which it was ground. Otherwise, the work will be completely disrupted. There will be no tightness between the valve disc and the seat. This work will also be required if the cylinder head is being replaced. The cylinder heads of the VAZ engine must be lapped to the new valves.
A prerequisite is the presence of a drill with a reverse. It is necessary to rotate the valve in different directions evenly so that the surfaces are as smooth as possible. It is worth noting that a coarse-grained paste is used first, and after it removes all small irregularities from the surfaces, it is necessary to wipe it off and apply a fine-grained paste. The latter will allow you to clean the valve disc and seat to a shine. Please note that grinding paste is an abrasive material, so it is unacceptable to get into the cylinder and other rubbing engine components. Work with valve grinding should be carried out away from the engine to prevent paste from entering the cylinders. Also, be sure to clean up after the process is over.
conclusions
In the article, you learned how to replace the cylinder head gasket on a VAZ 2109 car, fill, bind, repair, grind valves. Please note that in order to repair the engine and replace the gasket, you must have not only a tool, but also knowledge, without them you can only ruin 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 severe valve seal wear. And if your engine has such symptoms, then do not be too lazy to replace these oil seals.
The quality of the VAZ 2106 engine depends. It refers to disposable consumables that need to be replaced every time the cylinder head is removed. The article describes what function the gasket performs and how to replace it with a VAZ 2106, as well as a video demonstrating the replacement procedure.
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What is the function of the cylinder head gasket?
The cylinder head gasket is located between the cylinder head and the cylinders and performs several functions:
- seals the place where the head is adjacent to the cylinder block;
- prevents oil from leaking and coolant from entering the cylinders;
- restrains internal pressure and high temperature.
Thus, it separates three systems: gas distribution, cooling and lubrication. Experiencing heavy loads, it wears out quickly.
Gasket with traces of breakdowns
The following are signs by which you can determine the need for replacement:
- insufficient pressure in one or more cylinders;
- foaming of the coolant, a drop in its level in the absence of an external leak occurs due to the ingress of gases into the cooling system;
- emulsion on the dipstick, an increase in the oil level in the sump, the reason for this is the presence of antifreeze in the lubrication system;
- the appearance of oil stains on the surface of the coolant and the radiator neck indicates a broken gasket in the area of \u200b\u200bthe oil channel;
- white smoke in the exhaust gases, while the coolant level drops;
- squeezing out the coolant liquid from the expansion tank in the form of foam indicates a violation of the tightness of one of the cylinders;
- The coolant level drops and the engine starts to boil.
The video talks about the signs of burnout gaskets.
The cause of gasket failure may be:
- low-quality consumables;
- overheating of the power unit;
- wrong cylinders;
- insufficient coolant level;
- incorrect installation of the cylinder head.
Replacement process
If signs of gasket damage are found, it should be replaced immediately.
Set of tools
To carry out the replacement procedure, you need to prepare:
The machine must be washed before replacement so that dirt does not get into the disassembled engine.
Stages
This completes the replacement of the gasket on the VAZ 2106.
There is nothing complicated in the procedure, it can be performed independently by a motorist even with little experience in repair work. Thus, you can save on car service.
Video "Replacing the cylinder head gasket on the classic VAZ"
This video demonstrates the replacement of the cylinder head gasket on a classic VAZ.
Cylinder head (cylinder head) usually removed to replace the gasket or block, or repair the valve mechanism of the piston group or the head itself. The need to remove the cylinder head may also arise in the case of engine tuning or complete disassembly of the motor.
This work is carried out on a viewing hole or overpass.
How to remove the cylinder head on the VAZ 2109 - step by step instructions:
- Disconnect the negative terminal from .
- Drain the coolant into a plastic container.
- Disconnect the intake pipe from the exhaust manifold.
- Now dismantle the receiver together with the throttle assembly (VAZ 2111), or the carburetor in the case of (VAZ 21083), as well as the intake and exhaust manifolds (remove the cylinder head without removing the manifolds).
- On the VAZ 2111, it is necessary to disconnect the "mass" wires (they are attached to the left end of the head), remove the fuel rail with fuel pipes and nozzles.
- Disconnect the high voltage wires from the spark plugs, as well as the connectors for the coolant temperature and oil pressure sensors.
- On -21083, you will additionally have to remove the auxiliary unit housing, the ignition distribution sensor and the fuel pump.
- Now remove the timing belt, then the tensioner pulley, spacer and camshaft sprocket.
- Unscrew the rear nut that secures the timing cover to the cylinder head.
- Remove the cylinder head cover.
- Using a Phillips screwdriver, loosen the clamps and, one by one, disconnect all hoses from the outlet pipe of the cylinder head.
12. Remove 10 cylinder head bolts using a hexagon on "10".
13. Get screws together with washers.
14. Now you can remove the cylinder head along with the gasket.
15. When disassembling the valve mechanism, place a wooden block under the valve plate that you are going to crack.
16. Dry the valve.
17. Get it from the cylinder head guide sleeve.
18. Take the key to "13" and unscrew the two fastening nuts on the outlet pipe.
19. Remove the gasket and tube.
Assembly and installation of a head of the block of cylinders is made upside-down.
- Valve stems and bushing guides are lubricated with engine oil.
- Before installation, it is necessary to thoroughly clean the surface of the cylinder block from dirt and oil, as well as the remnants of the old gasket.
- Replacing the cylinder head gasket is carried out using two special centering bushings.
- Now you can install the mounting screws and tighten them in four stages according to the diagram below.
The first tightening of the screws is carried out with a torque of 20 N.m (2 kgf.m);
- The second - with a moment of 69.4–85.7 N.m (7.1–8.7 kgf.m);
- The third is a 90 ° tightening;
- Fourth - turning the screws 90 °.
Now you know how to remove the cylinder head on, on this do-it-yourself replacement of the cylinder head gasket can be considered complete.
Cylinder head - cylinder head, to be removed if it “pierces” the gasket when it is necessary to repair the head or the entire engine itself.
Before starting work on removing the cylinder head, the car is placed on a viewing hole or overpass.
We proceed to the execution of the robot for removing the cylinder head:
1. Disconnect the terminals from the battery, you can only "negative".
2. Drain the coolant from the cylinder block;
3. We remove the "air" with the carburetor;
4. Unscrew and remove the intake and exhaust manifolds;
5. We pull out the candle high-voltage wires and turn off the chips on the temperature sensor and on the oil level sensor;
6. We dismantle the ignition distributor and fuel pump;
7. Remove the timing cover and remove the belt, after removing the belt, unscrew and pull out the tension roller, spacer and camshaft pulley;
8. Unscrew the nut that secures the timing cover to the cylinder head.
9. Pull off the cylinder head cover;
10. Using a screwdriver, release and remove all hoses from the cylinder head outlet.
11. Using a hexagon on “10”, unscrew all the bolts that secure the head to the block (10 bolts) and pull them out together with the washers;
12. Slowly remove the head, the gasket should remain on the cylinder head;
We carry out the necessary repairs and assemble in the reverse order.
Before installing the cylinder head, it is very good to clean it of dirt, oil, and possible remnants of the old gasket on the planes of the head and block.
Tightening the cylinder head screws is carried out using a torque wrench in four stages and only in this order as shown in the photo:
Stage I - tightening the bolts with a torque of 20 N/m;
Stage II - tightening the bolts with a torque of 75 N/m;
ІІІ stage - tightening all the bolts a quarter of a turn;
I V step - repeat III stage.
Video on removing the cylinder head on the VAZ 21099:
