Replacing caps without removing the head of a VAZ 2106 - Sarterminal.ru

Valve seals prevent engine oil from entering the combustion chamber through special holes in which the valves of the gas distribution mechanism move. Installing the valve axis in a special hole that has a thermal gap may cause lubricant to appear in the combustion chamber environment.

For this reason, it is necessary to seal the holes, for which oil seals made of silicone are provided.

Replacing valve stem seals on a VAZ 2106

The valve stem seals on the VAZ 2106 are replaced after approximately 30,000 kilometers. If it is not there, then it is still better to replace it after 2-3 years, because the caps dry out from old age. Find out how to replace the caps on 2106 in the article.

At the moment, in stores you can find silicone valve stem seals, which in terms of their characteristics are much better than rubber ones. Nobody talks about their durability, it's all about the elasticity of silicone. This is very important in Russian winter conditions, especially if the engine is not equipped with a pre-heater.

Replacing valve stem seals

Signs by which you can determine the wear of the valve stem seals on a VAZ 2101 car are an increase in oil consumption, the appearance of bluish smoke when revving up, when the engine starts, when starting at intersections. If the replacement of valve stem seals on a VAZ 2101 is made from other brands of cars, then it is necessary to take into account:

So that the diameters of the valve stem and the seating belt of the guide bushing match.
The height of the new element should be no more than the “original” one up to 0.5 millimeters, otherwise, with the largest stroke of the valve, the cap may be damaged by the spring plate.
The cap should not be too large in diameter so that it can move freely inside the valve spring. This is especially necessary to take into account if there are two springs on the valve. Then, the outer diameter of the cap is limited by the inner diameter of the spring.
The lengths of the cap seat and the guide sleeve should be close in size. If it has a short belt, the part may be damaged by the edge of the sleeve when installing the cap “deeply” on the sleeve. In addition, the latter can press the edge of the element away from the valve stem, which can break the seal.
The internal profile of the cap must be carefully examined. Often parts that do not have a reinforcing sleeve have an annular protrusion on the inner seating surface. When installing a cap on a smooth bushing, a large amount of tension must be created, and the protrusion can damage the cap or the part will come off the bushing.
The year of manufacture of the engines whose products need to be replaced, and those from which they are planned to be used, is taken into account.

When to change valve stem seals on 2106

Of course, there are car enthusiasts who carefully monitor their iron horse and carry out many procedures according to schedule. However, there are very few of them, so we will pay attention to external signs.

First of all, oil consumption. Before we talk about liters, it’s worth paying attention to this. Over time, when the oil seal wears out, it turns into a filler neck, and the valve stem turns into a piston that pushes this oil. Imagine that the engine is running at 1600 rpm. This means that 800 strokes are performed per minute in one cylinder, which means the valve moves back and forth 400 times. What if there are eight such valves? In general, a lot of oil can leak through the valve stem seals.

Further - increased smoke, reduced engine power. You need to remember one simple truth - engine oil does not burn, it cokes. Only the additives burn. We all know motorcycles in which oil is mixed with gasoline. We all remember how much smoke they make. But there the fuel is diluted with oil in proportions of 1:200. Here they are much larger. That is, if you see blue smoke from the exhaust pipe, then you should think about replacing the valve stem seals. Of course, with such a mixture the engine will not develop full power, as with pure gasoline.

Tools for replacing valve stem seals 2106

First of all, you need to immediately stock up on a sufficient set of tools so that later, when the engine has already been disassembled, you don’t have to rush around looking for them. So here's a short list.

Key for turning the crankshaft;
Rassukhaka;
Set of flat blade screwdrivers, different widths;
Set of keys and sockets;
Tweezers;
Valve cover gasket;
If you plan to adjust the valves, then a feeler gauge with a thickness of 0.15 mm is required;
Tin rod about 1 cm thick;
Puller for valve stem seals.

Preparation for replacing valve stem seals of VAZ 2106

We will consider replacing valve stem seals on a VAZ 2106 without removing the head, so it will be both easier and more difficult. The simplicity lies in the fact that there is no need to dismantle the head. And the difficulty, which is also logical, is not to drop the valve into the cylinder.

First, unscrew the chain tensioner, then you will need to tighten it. This is necessary so that you can remove the camshaft gear without any obstacles. Next, remove the valve cover and mark the position of the gear on the chain. This is necessary in order not to set marks later. In principle, you don’t have to do this, but it’s easier this way.

Now we unscrew the gear, remove it and secure the chain so that it does not fall into the crankcase. If this happens, you will have to remove the pan, radiator, front cover and then adjust the timing. In general, it’s not very pleasant.

Now remove the camshaft housing. Next, we unscrew the spark plugs to make it easier to rotate the crankshaft. We hold the chain tight and set the piston of the first cylinder to top dead center (TDC). This is why you need a key to rotate the crankshaft. To get exactly to TDC, you need to align the mark on the crankshaft pulley with the last mark on the front cover along the way.

Reasons for wear of valve stem seals

During long-term operation, such valve stem seals, due to changes in temperature conditions, lose their physical properties, such as elasticity and softness, become “wooden” and must be replaced.

The required replacement of valve stem seals on a VAZ 2106 among motorists is not considered a job of increased complexity; with a certain degree of dexterity and proficiency in plumbing tools, it can be done by any car enthusiast. Moreover, during such repairs a set of tools is used, the use of which is necessary when replacing the cylinder head gasket. A special “puller” is also used to bring the spring elements of the valves into a compressed state and a special straightening for the caps.

Experienced drivers have it in stock, but if the car enthusiast does not find it in his neighbors’ garages, then it can be bought at a specialized retail outlet that sells spare parts. Also, when performing this type of work, you cannot do without medical tweezers, which will be required to remove the valve elements, a special metal nozzle for installing VAZ 2106 valve stem seals using the pressing method, round pliers, solder for fixing the valve element and some other common plumbing tools.

Replacing valve stem seals on a VAZ 2106

Now we install the sealant on any valve of the first or fourth cylinders, then insert a tin rod into the spark plug hole and clamp it, pressing on the sealant. This is done so that the valve does not punch a hole in the piston bottom. Now we jerkly press on the cracker so that the spring compresses, carefully remove the crackers with tweezers. It is important not to lose them, otherwise you will have to run to the store.

Then use a puller to remove the old cap and press on a new one. Now we compress the spring again and install the crackers. We do this with each valve in the first and fourth cylinders.

Now we rotate the crankshaft 180 degrees and set the pistons of the second and third cylinders to top dead center. We carry out the same operations with valves. Then we install the camshaft and housing in place. The procedure for tightening the camshaft housing bolts is shown in the figure. Now we combine the marks on the camshaft gear and the chain; if adjustment of the valves is required, then we carry it out. Then we put all the parts in place.

Video: replacing caps on a VAZ 2106

Source: https://fastmb.ru/autoremont/856-zamena-maslosemnyh-kolpachkov-na-vaz-2106.html

Procedure for replacing valve stem seals

The necessary preparatory part for replacing valve stem seals is carried out according to the following scenario:

Remove the cylinder head cover.
While turning the crankshaft, we combine the marks on the drive sprocket of the engine camshaft with the mark on the bearing cover of the valve mechanism distribution shaft. This will make it possible to set the position of cylinders 1 and 4 at top dead center and eliminate the possibility of valves falling out when removing the installation nuts.
We remove the body part, the so-called. “bed” of the camshaft bearings together with the product, be sure to fix the sprocket with the chain so that these parts do not fall into the movement department of the chain drive.
We begin to carry out technological operations to replace the valve stem seals.
Since the TDC of piston 1 is set, we unscrew the spark plug of cylinder 1, dismantle the drive valve lever, remove the spring element of the lever, for which we move it to the side plane.
Then we loosen the fasteners of the adjuster bolt, dismantle it, and then place a puller in its place to carry out work on compressing the spring elements of the valves. Not all pullers are structurally the same, therefore each device is adapted to different stop points, to determine which you must first read the instructions for using the device.
We insert solder with tin and rosin into the seat for the spark plug to hold the valve element while removing the crackers.
Then, using a compression puller, we bring the spring to the appropriate state, in which the truss elements are released from the fastening. There are times when crackers stick to the surface of the wall. In this case, you need to tap the puller with a hammer to achieve their free position, and then carefully remove them with medical tweezers. At this stage, the desiccation process is complete.
At the end of dismantling, it is necessary to remove the springs of the internal and external fastenings, free from its disc element and lock washers.

Causes and results of wear of valve stem seals on VAZ 2107/2106.

The purpose of the valve stem seals is to prevent excess engine oil from entering the engine combustion chamber. The cap should fit snugly against the valve and allow only the small amount of oil through that is necessary to lubricate it. The caps are made of special rubber, but over time, the edge of the valve stem cap wears out, deteriorates, the rubber ages, loses elasticity and peels off from the base. As a result, the cap begins to let oil through and it begins to get under the valve.

Leaking oil burns on hot valves , as a result of which carbon deposits build up on the internal walls of the engine, the cross-section of the intake and exhaust channels narrows, and the engine loses power. During active use of the engine, carbon deposits begin to fall off, its particles clog the seat and working chamfer of the valve, as a result, the fit of the valves is disrupted, the engine begins to operate intermittently and stalls. Another outcome is valve burnout, which leads to failure and replacement of VAZ 2107/2106 valves.

Oil seals for VAZ 2106 engine

Windshield wipers or valve sealants primarily prevent excess oil from entering. The retail is made of a special rubber that is consumed over time, resulting in the transfer of lubricant. Consequently, oil consumption increases. Therefore, it is worth understanding in more detail what this part is and when you exchange it for a VAZ 2106.

What are they for?

The drive unit construction has inlet and outlet valves. The valve stem is in constant contact with the timing shaft, which results in the formation of a greasy mist. The rear side of the intake valve is in the area of continuous fine fuel droplet generation or the area of hot combustion gases, which is typical of the exhaust valve. Proper operation of the camshaft is impossible without lubrication, but its entry into the cylinders is an undesirable process. During the contested valve valve valve, it is deprived of oil through the bottom of the oil seal.

Signs of wear

During engine operation, valves are exposed to continuous friction and the aggressive effects of lubricant and exhaust gases. This causes the hardening of the rubber from which part of the gerland is made, as well as wear and tear. Despite the high quality of the material, after some time it is necessary to replace parts. To prolong the viability of the gland, it is necessary to use high-quality motor oil.

The average service life of valve sealants is approximately 100,000 km

There are some signs that indicate that the oil seals have been consumed and need to be replaced:

Smoke extraction from the muffler;
Engine consumption increases;
Ignition contaminated by plants.

Video: sign of wear on valve stem seals

When to change and to what

When the wiper blades are not up to par with their function, oil begins to leak towards the cylinder. However, he cannot be completely sure about the consumption of this part, because in the case of damaged or used piston rings, lubricant may also enter the combustion chamber. To determine whether the rings or oil seals need replacing, you need to observe your exhalation while driving. If, during braking, the gas pedal is pressed quickly and characteristic bluish smoke is displayed from the exhalation, this will cause consumption of the valve shaft seals. The same situation will occur after a long-term car stop.

Signs of failure of valve seals on VAZ 2107, VAZ 2106.

Typically, the oil seal replacement interval is 80,000 kilometers. Only timely identification of a malfunction and its elimination will prevent major repairs of the engine. Let's look at the main signs of wear on valve stem seals:

High oil consumption and the subsequent need to add more than a liter of oil per 10,000 km is the first sign of wear on the oil scraper rings and/or valve stem seals. The limit is considered to be oil consumption from the “max” mark to the “min” mark per 1000 km for gasoline engines.
Smoke exhaust color. Color serves as an important diagnostic sign and directly indicates malfunctions in the engine. Smoke from the exhaust pipe can be white, black, blue and other shades, depending on the additives in the fuel and the type of fuel itself. White smoke on a warm VAZ 2106/2107 engine is a reliable sign of wear on the valve stem seals or burnout of the engine piston oil rings.
Carbon deposits on spark plugs. This sign determines that the oil seals have worn out and/or a “rich mixture” of air is being supplied to the carburetor. Eliminated by replacing valve seals and/or cleaning the carburetor and repairing the engine ECU.
Sticking engine valves. Sticking engine valves can be caused by worn oil seals, low-quality fuel and oil, as well as irregular oil replacement. Another reason may be a long pause in engine operation and overheating.

Replacing valve stem seals for VAZ 2106

Seeing bluish smoke from the exhaust pipe of a VAZ 2106, the owner automatically begins to remember the last time he changed the oil scraper rings and rebuilt the piston. Then the budget for major repairs is automatically calculated, which always comes unexpectedly, like snow in January. But there is no need to rush. Most likely, the reason is different - in the valve stem seals.

How does valve seal wear manifest?

Valve seals, or valve stem seals, are designed to ensure that the oil that lubricates the gas distribution mechanism does not enter the combustion chamber. Valve bushings cannot ensure tightness on their own, so they are fitted with seals made of high-quality soft rubber with an oil scraper edge, which prevent oil from penetrating the valve stem into the cylinder.

Oil entering the combustion chamber in large quantities causes characteristic blue smoke from the exhaust pipe. Oil scraper rings may also be to blame for this, but if the engine smokes during a cold start, and the smoke disappears when warmed up, then we can say with one hundred percent certainty that the valve seals have outlived their usefulness.

Another sign of oil seal failure is increased oil consumption and greasy deposits on the spark plugs.

Tools and accessories for replacing caps

Replacing the valve stem seals of a VAZ 2106 is no different from the same work on engines of the entire classic VAZ series. To carry out the work, we do not need to remove the head, much less the engine. Therefore, we will do all the work ourselves with a minimum amount of tools and a minimum amount of time. It is advisable to carry out the work in a garage, under normal lighting and without excess dust - after all, we open the engine.

We will need, in addition to the usual set of keys:

torque wrench;
tweezers;
set of heads with a knob;
valve puller;
a mandrel for shrinking the oil seal onto the bushing.

During the repair process, if necessary, we will illustrate some points, to the extent possible, but nothing complicated is expected in the process. Almost. To compress the springs, we will use a special puller with a lever, although you can do without it if you know all the intricacies of the process.

Replacing caps

We will begin replacing the valve seals by providing access to the cylinder head; further actions will be performed step by step, without breaking the sequence.

We remove the air filter cover, the filter itself and its housing, after covering the carburetor diffuser with a rag so that nothing gets into the intake manifold. Otherwise you will have to remove the block head.
Remove the timing cover and align the mark on the camshaft drive sprocket with the mark on the camshaft housing so that the pistons of cylinders 1 and 4 are at top dead center. They will prevent the valve from falling into the cylinder when we remove the spring.
Loosen the chain tensioner by about half a turn, loosen the sprocket mounting bolt without unscrewing it completely.
Using a screwdriver, press the plane of the chain tensioner and tighten the cap nut until it stops, after which you can unscrew the sprocket mounting bolt. We remove the sprocket, carefully tying it with wire to any convenient stud or to the hood spring.
Unscrew the nuts securing the camshaft housing, remove it and unscrew the spark plug on the 1st cylinder. Then remove the drive levers by snapping the spring clip.
We unscrew the adjusting bolt and fix the puller stop in its place, as shown in the figure.
We insert any suitable sized rod into the hole for the spark plug - plastic, wood or very soft metal to fix the valve in the seat.
Using a puller, we compress the spring, and using tweezers, remove the crackers mating the valve stem and the spring support plate.
Remove the crackers, springs and support washers. The valve must remain closed.
Carefully remove the old valve seal using pliers. Be extra careful not to chip off the edge of the valve sleeve - it is made of brittle cermet.
Lubricate the fresh oil seal with clean oil and carefully place it on the valve stem, seating it as tightly as possible on the bushing. For tighter shrinkage, a cap mandrel will be required.
We assemble the valve drive mechanism in the reverse order and move on to the next valve.

We do the same with the oil seals on the 4th cylinder, and then, carefully turning the crankshaft and holding the drive sprocket, set the pistons of cylinders 2 and 3 to the TDC position. We repeat all the described operations for the valves of these cylinders.

Timing assembly

Having replaced all the caps, we assemble the timing belt, observing the position of the sprocket according to the mark on the boss of the camshaft housing, and finish assembling the cylinder head. The tightening sequence for the camshaft housing nuts is shown in the figure and must be strictly followed to avoid warping the housing.

Now your VAZ 2106 will no longer cough up blue smoke, and valve seals will last for more than one season. Have a pleasant trip!

Source: https://avtoshef.com/zamena-maslosemnykh-kolpachkov-vaz-2106/

VAZ 2106 – removing valve stem seals

Replacing the valve stem seals in itself is not difficult at all; to perform the repair work you will need the same tools as when replacing the cylinder head gasket and, in addition, you will also need a special device for compressing the valve springs if you have If you don’t have one, then you will need to purchase it at the nearest auto parts store; the device looks like the one in the figure below.

You will also need tweezers for removing crackers, round nose pliers, a special mandrel that is used for pressing in valve stem seals and a piece of tin solder to fix the valve. We've sorted out the necessary set of tools, now let's move on to the correct sequence of actions.

The first thing you need to do is get rid of, well, not in the literal sense of course, the cylinder head cover.
Now you need to align the marks on the camshaft drive sprocket with the mark on the camshaft bearing cover; this move will allow you to install the pistons of the first and fourth cylinders at TDC and thereby prevent the valves from falling when de-stressed.
Remove the camshaft bearing housing along with the shaft, but do not forget to secure the chain and sprocket from falling.

Now you can proceed directly to replacing the valve stem seals of the VAZ 2106 and any other model from the “Classic” series.

Since our first piston is in the top dead center position, we will start with it, to do this, you need to unscrew the spark plug of the first cylinder, then remove the valve drive lever, applying a little force on your part, after which you need to remove the lever spring, to do this, just pull back it to the side from under the locking spring. Next, simply loosen the nut of the adjusting bolt and then unscrew this bolt and in its place screw in a device for compressing the valve springs

Necessary tools and accessories

Replacing the valve stem seals of a VAZ 2106 is done directly on the car, which significantly speeds up the work, since there is no need to remove and then reinstall the cylinder head. It is enough to place the car in a place protected from dust and precipitation. Apply the handbrake and place the gearshift knob in neutral. Replacing valve stem seals on a VAZ 2106 requires a set of caps and a new head cover gasket, standard tools, accessories:

Carrying;
Candle key;
Spanners 17 mm., 13 mm.;
Hexagonal internal heads 8 mm, 10 mm, 13 mm. with a collar;
Pliers;
Tweezers;
Flat screwdriver;
8 mm thick soft metal rod;
Torque wrench;
Spring compression device
Mandrel for installing caps
Soft wire.

Different designs of special pullers for compressing springs

Equipment and tools for work

Replacing the VAZ-2106 valve stem seals should be carried out directly on the vehicle, which greatly simplifies and can speed up the work. Performing these actions does not require removing and then replacing the timing block element. It is enough to park the car in a place that is protected from dust, dirt and precipitation.

Apply the handbrake and place the gearshift lever in the neutral position.

To replace oil seals on a VAZ-2106 car, you need to have a set of new oil seals and a new gasket for the timing cover, a set of open-end wrenches and some equipment.

How to make your own devices

It is convenient to use a special device, since there is no need to hold it with your hands; it holds the springs compressed with a bolt. If you don’t have such a device, you can make it yourself. To do this, it is enough to have two steel square bars 10x10 mm, 300 mm long. They need to be fastened at three points, at the ends and in the middle, so that there is a gap of 12 mm between them, like rails, then the price will be much cheaper. So:

You can attach it in any way; bolts, clamps, welding, in the fastening points between the rods you need to place metal plates 12 mm thick, which will provide the necessary gap between the rods.
The valve stem will fit into the gap when the springs are released. To install valves, instead of a mandrel, you can use a steel tube 120 mm long, with an internal diameter of 14 mm, and a copper washer with a hole matched to the rim of the cap.

Assembly order

Pressing in valve stem seals using a bushing

The valve stem, oil seal and cap are lubricated with engine oil; the valve cap corresponding to the valve is placed on the stem with the oil seal facing up. It descends down the stem, where it is pressed tightly against the hole with the valve guide.
The end of the mandrel is pressed against the rim of the cap, by lightly tapping the top of the mandrel with a hammer, the cap is pushed into the hole until it stops. The cost of a mistake in case of strong impacts, damage to the oil seal or cap, will have to be replaced. The springs are installed in the reverse order of disassembly.

Attention! After installing the springs and removing the device for compressing the springs, you need to remove the plate from the spark plug hole and tap the end of the rod with a hammer so that the crackers sit in their place. This must be done carefully; if the crackers are positioned incorrectly, the springs may pop out.

Procedure for tightening the camshaft cover nuts

The camshaft cover, as required by the instructions, is pressed with a torque wrench with a force of 8 kg/m. tightening the nuts in the required sequence.

Source: https://masteravaza.ru/dvigatel/obsluzhivanie-dvigatelya/vaz-2106-zamena-maslosemnyh-kolpachkov-180

Replacing valve stem seals without removing the head

It happens that blue smoke appears from the muffler, and the engine consumes oil excessively, but still pulls well. This is one of the sure signs that it is necessary to replace leaky valve stem seals - important parts of the valve mechanism. They begin to leak oil for the following reasons:

natural wear and tear;
untimely valve adjustment;
Poor quality oil poured into the engine.

Of course, blue smoke from the exhaust pipe is one of the main symptoms indicating that the car needs this operation. But sometimes it makes sense to do it during repair of a piston unit. For example, replacing piston rings and oil seals is usually done at the same time, so as not to open the engine several times.

However, our repairs can be carried out separately without dismantling the cylinder head. In the following lines we will analyze how such a replacement is carried out on the VAZ, as well as on other brands of cars.

How to solve the problem on VAZs

Let's see how to replace the valve stem seals of a VAZ 2107. We will need:

wrenches;
device for compressing valve springs;
tin solder rod;
screwdrivers;
hammer, mandrel;
pliers, tweezers.

We remove the air filter housing, as well as the cylinder head cover, by unscrewing the corresponding fasteners.
We combine the marks so that the pistons of the first and fourth cylinders reach TDC.
Having loosened the lock washer, we tear off the camshaft sprocket nut.
Loosen the drive chain tensioner.
We dismantle the shaft sprocket.
After unscrewing the fasteners, remove the bearing housing.
We unscrew the spark plug of the 1st cylinder.
We remove the lever.
We unscrew the adjusting bolt and instead screw in the equipment to compress the coils.
We insert a rod of tin solder into the hole of the candle.
Having tightened the bolt of the equipment, we take out the crackers using tweezers.
We remove the equipment, take out the springs, washer and plate.
Using pliers, carefully remove the worn part.
We drive the new spare part using a mandrel and carefully hit it with a hammer.
We reassemble the valve assembly.
We replace the caps from the VAZ 2107 for the remaining sockets by turning the crankshaft half a turn.
We assemble the engine.

Replacing valve stem seals on a VAZ 2106 is done in exactly the same way. Now regarding the front-wheel drive cars of the Volzhsky Automobile Plant. Here the main difference with the described operation can be traced at the initial stage. And after they get to the crackers, they work in exactly the same way. So, when replacing the valve stem seals of a VAZ 2109, the following tools are taken:

wrenches;
device for compressing valve springs;
tin solder rod;
screwdrivers;
hammer, mandrel;
pliers, tweezers.

The first points differ from the previous instructions.

Remove the camshaft pulley.
The head cover is also removed.
Remove the rear casing.
Remove the ground wires from the studs.
The bearing housings and the camshaft are unfastened and removed.
Further steps for changing the caps on a VAZ 2109 are identical to those described in the previous instructions, starting from point 7. In this case, the piston of the cylinder with which they are working must be at TDC.

Valve seal replacement process

To carry out this action, it is necessary to prepare a new set of valve stem seals in advance. You will need a flat-head screwdriver, keys, an 8 mm tin rod, tweezers, pliers, equipment for loosening the valves and a mandrel that is needed to press in the seals. First you need to remove the terminals from the battery after opening the hood.

Then you need to unscrew all three nuts that hold the air supply filter. The lid itself and the element that performs the filtration must be removed. The 4 nuts on the carburetor must be unscrewed to be able to remove the air filter housing. Now you need to remove the nuts that secure the valve covers to the block. After disconnecting the rod from the carburetor, you can remove this cover.

Next, you need to very carefully remove the camshaft, which is located in the block. To do this, change the position of the shaft pulley. Then the bolts that connect it to the gear are unscrewed from the camshaft. After this, the gear can be removed. It is better to hang the chain to make it easier to remove the camshaft later. After these steps, all the candles are unscrewed.

Next you will need to use a desiccant. After desiccation, it will be possible to remove the seal from the valve sleeve. It must be lubricated with engine oil in advance. After this, it can be removed by tapping with a hammer. Assembly is carried out in reverse order.

How to replace valve stem seals on a VAZ-2106

If you are here, then you are the proud owner of a VAZ-2106 car that has some problems. Perhaps you enjoy watching persistent foreign cars trail behind your “six” and swallow the gray exhaust, but small, unnoticeable caps, like a candle that burned Moscow, can lead to the death of the entire engine, and therefore turn your iron horse into a modest example of real estate. The decision to fix the car was absolutely correct, and with some skill you will quickly deal with the problem.

Before work

The combustion chamber of the engine must be protected from foreign substances, so the cylinders need protection from oil. This is where valve stem seals, or oil seals, come into play, protecting the combustion chamber as the valve stems move. Over time, they lose elasticity and the quality of their work decreases. Nothing prevents oil from getting where it shouldn't be.

If you notice that the exhaust has become bluish and thick, soot or even soot has appeared on the spark plugs, and your VAZ-2106 eats oil like gasoline, then it is very likely that the problem with the seals has affected you too. You need to have the courage to open the hood and examine the problem. Perhaps the entire gas distribution mechanism needs to be replaced, but for now we will only talk about the caps: if we really strain ourselves, then do it systematically.

The design of valve stem seals is not very complicated, although there are both high-quality samples and short-lived ones. They consist of the following parts:

Frame. Steel bushing that guarantees the strength of the seal.
A spring that applies pressure to the valve stem and ensures a tight seal.
The cap itself removes any remaining lubricant from the rod. Made from elastic materials such as rubber or fluoroplastic. It is this part of the structure that hardens.

To prepare to replace the valve stem seals, you will need to find some tools. If you wish, you can do the work without them, trying to use available analogues, but who needs to hammer a nail with a cigarette lighter when a hammer has been invented. You will need:

puller, tweezers or pliers for removing old caps;
valve depressurizer for compressing springs;
mandrel for installing oil seals;
a rod or tube of soft metal to keep valves from falling.

If you are sure that you will earn more in the time it takes to tinker with the car, you can entrust the VAZ-2106 to professional auto mechanics. But, perhaps, if you are here, therefore, you are determined to change the caps yourself.

Repair procedure

First of all, you need to get to the valve stem seals. We unscrew the cover nuts from the block head, do not forget to put the washers in a separate place so as not to lose them.
We turn the crankshaft and carefully watch when the marks on the cover coincide with the marks on the camshaft sprocket. This position will ensure the safety of the valves after removing the crackers.
Unscrew the camshaft bearings. Fixing the sprocket and chain can save you from a lot of problems, because they love to fall into the engine crankcase and ruin the rest of the day.
The piston in the first cylinder has reached top dead center. Now is the time to dismantle the spark plug and remove the spring. After this, move the lever to the side.
The adjusting bolt must be loosened, then a spring puller must be installed.
We insert a rod or tube made of soft metal into the hole of the candle, this will protect the valves from falling.
We take out the cracker and press the spring until the crackers appear. Sometimes they get stuck and need to be released by lightly tapping them.
Remove the springs, valve plates and washers.
We fix the valve with a clamp and remove the obsolete oil seal. You can help the process by lightly tapping the hammer.
Before the procedure, lubricate the new valve stem seal with engine oil. We put protective caps on all new oil seals, which should be included in the kit. This will protect the valve surface from scratches during the pressing process. Pressing is done with the same desiccant, only on the other side.
Repeat the same steps on the remaining valves. It is important to remember to crank the crankshaft before working on the second and third cylinders.

After installing the new, elastic and sealed valve stem seals, reassemble everything in the reverse order. If everything worked out correctly, you can be happy with yourself! The repair has been completed.

Source: https://ladaprofi.ru/vaz-2106/kak-osushhestvit-zamenu-maslosemnyh-kolpachkov-na-vaz-2106.html

Replacement procedure

When replacing valve stem seals on a VAZ 2106, you must adhere to a certain algorithm:

Remove the cover from the block head by unscrewing all the nuts. And don't lose the washers underneath them.
Rotate the crankshaft until the marks on the camshaft sprocket and the cover align. In this position of the crankshaft, the pistons of the first and fourth cylinders are at TDC. Therefore, after removing the crackers, the valves will not fall out.
Remove the pastel of the camshaft bearings, fix the sprocket and chain so that they do not fall down, otherwise it will be very difficult to get them out.
So, in the first cylinder the piston is at TDC, now you need to unscrew the spark plug and remove the spring, and then move the lever to the side.
Loosen the adjusting bolt and install the spring puller.
Insert a soft metal rod (tin is ideal) into the spark plug hole to prevent the valves from falling down.
Using a desiccant compress the spring until the crackers are released. It is quite possible that you will have to tap them lightly - they often stick.
Dismantle the springs, remove the plates and washers.
Now you can install the first valve stem seal of the VAZ 2106 in its place. Place the clamp on the valve and, tapping with a small hammer, remove the old cap. Lubricate the new one with oil and remove the spring from the top. Place it in place and, using a mandrel, press it into the hole. Afterwards you can put on the spring.
Replacing the VAZ 2106 oil seals on the remaining valves is carried out in the same way, just do not forget to rotate the crankshaft before working on the second and third cylinders.

After completing all work, install the chain and sprocket in place, and tension the drive. Make sure everything is installed before starting the engine. Video on the topic:

https://youtu.be/https://youtu.be/XXDR-YCpquM
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