Replacing the crankshaft oil seal on a VAZ 2110 (8 and 16 valves) with your own hands

Causes of failure

The most obvious factor indicating problems with the crankshaft oil seal is numerous traces of oil on and near the engine. There may be several reasons for the loss of strength of the crankshaft oil seal (CS). Here are the main ones:

Natural physical wear of the part associated with a long service life, which has already approached 3 years or even exceeded it;
Problems that arose during the last installation of a new SC;
Incorrect assembly of the unit, which resulted in a violation of the tightness and integrity of the cuff;
Presence of mechanical damage on the element;
The use of rubber of dubious quality, which even theoretically could not last long.

The design of the “ten” provides for the presence of two crankshaft oil seals - front and rear. Their replacement is somewhat different. Therefore, they should be considered separately.

Tools and materials

What's a repair without tools?! You will need a certain set of everything you need. This set includes:

Car keys;
Timing belt tensioner;
Set of screwdrivers with bits;
Waste collection container;
Antifreeze or high-quality graphite lubricant;
Container with motor oil;
Heat-resistant sealant;
New crankshaft seals.

What is needed for repair

If you decide to repair it yourself, take care of the site where you plan to inspect the machine. This could be an overpass or an inspection ditch in which it will be convenient to make the replacement.

The set of tools for work should include screwdrivers, cuffs, new oil seals, a set of heads and keys. Be sure to use sealant when making repairs. Remember that parts and consumables must be purchased only from the manufacturer, in order to avoid purchasing low-quality products or counterfeiting original parts.

Replacing the crankshaft oil seal on a VAZ 2110 16 valves

In order to remove and replace the front crankshaft oil seal of a VAZ 2110 (16 cl), you will need the same standard set of tools. All actions are also similar to the procedure for replacing the cuff on an 8-valve engine. So, the algorithm for removing the front cuff from the crankshaft is as follows:

Remove the timing belt.
Remove the generator belt.
Remove the front right wheel and, if necessary, the fender liner.
We unscrew the bolt securing the crankshaft pulleys and dismantle them.
We replace the cuff and put everything back together in reverse order.

If you are replacing the front cuff, it makes sense to replace the back one as well. And if you do this at the same time, you will save time, since the components are replaced from one place with the removal of the wheel and, possibly, the fender liner.

How to change the front and rear crankshaft oil seals of a VAZ 2110

What you will need to replace:

ring wrenches or a set of sockets “10”, “13”, “19”;
pliers;
screwdriver;
container for draining lubricant;
new o-rings.

When replacing a crankshaft oil seal, it is better to purchase a kit right away, fortunately, they are not expensive - a large oil seal from the VAZ manufacturer with article number 21080100516000 costs about 150 rubles, and a small oil seal with article number 21081005034 costs about 60 rubles. You can also purchase a set of oil seals from ESPRA, catalog number E07418, costing 420 rubles.

The price is indicated for spring 2021 in Moscow and the region.

Replacing the front crankshaft oil seal of a VAZ 2110

Drain the engine oil into a container with a volume of at least 4 liters.
Remove the front timing cover.
Remove the right wheel. Turn the crankshaft clockwise by the pulley mounting bolt until the marks on the toothed pulleys align.
We fix the crankshaft from turning.
Unscrew the bolt securing the generator drive pulley and remove the generator drive pulley.
Turn the tension roller to a position in which the belt will be loosened as much as possible. Remove the timing belt.
Use two screwdrivers to pry up the crankshaft toothed pulley and remove it from the crankshaft toe.
Use a screwdriver to pry up the oil seal and remove it from the oil pump cover.
Lubricate the working edge of the new oil seal with engine oil and press it in.

Replacing the rear crankshaft oil seal of a VAZ 2110

The rear crankshaft oil seal is pressed into the oil seal cover. To carry out the replacement, it will be necessary to remove additional parts and mechanisms, and as a result, highly qualified performer, therefore, to replace the rear oil seal, it is recommended to contact a service station. But, if you decide to replace the rear oil seal of a VAZ 2110, the following instructions will help you:

Drain the oil from the engine and gearbox.
We remove the wheel.
We remove the CV joint from the hole in the ball joint of the bearing.
We take out the drive shaft with the CV joint.
Disconnect the gearshift drive rod.
We unscrew the gearbox mounting bolts and remove the gearbox from the engine. We remove the gearbox.
We unscrew the six bolts securing the clutch housing to the flywheel and remove it.
Unscrew the six bolts securing the flywheel to the crankshaft and remove it.
Use a screwdriver to pry up the oil seal and remove it from the holder.

Work order

First of all, we disconnect the negative terminal, as a result of which we de-energize the VAZ-2110. After this procedure, it is necessary to remove the protection of the timing belt and the car engine.
We loosen the tense timing belt, and then simply remove it, making sure that the marks match.
We remove the right wheel in front of the VAZ. After completing the manipulations with the wheel, the generator drive belt is also removed, after which you must unscrew the bolt securing the crankshaft pulley.
The engine oil is drained and the oil pump, to which the front oil seal is attached, is dismantled. We replace the cuff and carefully coat it with sealant.
The cuff on the inside is generously coated with oil, then remove the seal and take out the front cuff of the car. We collect all this in the reverse order of the above steps.

Replacing the rear cuff will be much more difficult. The procedure for carrying out repair actions is as follows:

We remove the negative terminal from the battery, after which it is necessary to remove the clutch basket. After these procedures, we proceed to dismantling the flywheel, and then to removing the crankcase casing.
The rear oil seal holder is removed by unscrewing the tightened bolts securing it. We unscrew the bolts that secure the flywheel.
While holding the latch, you need to pull out the seal. To do this, you can use a vice and inspect the fixing part of the cuff. If there are any defects in it, this part is also replaced, and then the working edge of the new cuff is placed inside the retainer and the gasket is replaced.
The edge of the crankshaft together with the flange is generously coated with oil. We install the holder, very carefully tucking the working edge of the sealing ring onto the flange. Reassembly after repair is carried out in the reverse order. After making repairs, you need to check from time to time to see if engine oil is leaking.

How to replace the front crankshaft oil seal

You will need : remove the timing belt, prepare two screwdrivers, a piece of pipe and a hammer.

Procedure:

Pry off the crankshaft timing belt using two screwdrivers.
Remove the toothed pulley from the crankshaft nose.
Remove the oil seals by prying them up with a screwdriver and then remove them from the oil pump cover.
Lubricate the working edge of the new oil seal with engine oil and press it in with a suitable piece of pipe.

Assembly is carried out in reverse order.

When is it time to change?

The car crankshaft has two oil seals: front and rear. They are dense elastic rings in a hard cage.

Their purpose is to prevent dust and dirt from entering the crankcase and to prevent oil leakage. The service life of the sealing rings is 150 thousand kilometers. But consumables may wear out sooner. The reason for this may be:

poor quality product;
work under increased loads;
overheat;
untimely replacement of oil and filter;
use of oils that do not meet the recommended ones.

You can diagnose the replacement of oil seals by the oil stains that appear on the engine and gearbox. An oil leak can cause the timing belt to break, causing damage to the valves. In this case, it may be necessary not only to replace the valves, but also to overhaul the engine.

Front SC

We recommend starting with the front one, since this oil seal is the easiest to replace. Even a car owner without much experience can handle it. Once you learn how to change it, you will most likely be able to replace the rear crankshaft oil seal yourself. But it is better to act according to the circumstances.

Retrieving an element

The steps for replacing the front oil seal are as follows:

Remove the protective cover located on the timing belt;
Remove your engine protection. You will have to get under the bottom and unscrew the corresponding fasteners;
Set the piston of the first cylinder to top dead center on the compression stroke;
Slightly loosen the timing belt tension, after which it can be easily removed;
Remove the front right wheel;
Remove the generator drive belt, and also do not forget to remove the pulley;
Now we dismantle the fasteners of the crankshaft pulley and take it out. Here you will need to first remove the key;

Front SC

Be sure to drain the engine oil from the system. To do this, prepare an appropriate container in advance. If you plan to refill the oil, be sure to keep the container clean and dry;
Remove the oil pump. It is on this that the desired crankshaft oil seal is located;
To remove the SC, you will need a flathead screwdriver;
At the same time, check the condition of the oil filter. Replace it if necessary;
Having dismantled the old front crankshaft oil seal, you can now install a new one in its place;
Installation of the SC is carried out with a 27 mm nozzle or head;
Assembly of the unit is carried out exactly in the reverse order.

Since replacing the AC requires serious dismantling work, it is not superfluous to simultaneously check the condition of other units, replace the oil, filter or other parts.

How to replace the front crankshaft oil seal on a VAZ 2110-VAZ 2112?

Note! This article describes the process of replacing the oil seal on only 16-valve cars; if you have an 8-valve engine of the tenth family, then in this case, go to the article entitled: “Replacing the crankshaft oil seal on nines,” in which everything is described using the example of an 8-valve engine!

Removal: To remove the oil seal, first remove the timing belt from all upper pulleys and rollers (How to do this is described in the article on replacing the timing belt on a car, we already provided a link to this article at the very beginning of the article, scroll above), then the alternator belt you will need to remove it from the crankshaft pulley (How to remove the belt is described in the article: “Changing the alternator belt on a VAZ”), after these operations, proceed to removing the large and small gears of the crankshaft, both gears are secured by one bolt (It is in the central parts holds) which will need to be unscrewed with a spanner or a socket with an extension (see photo 1), but to get to it, you will have to lift the right side with a jack (look in the direction of the car), remove the wheel (How to remove a wheel, read the article: Correct replacement of wheels on cars) and, if necessary, remove the fender liner, if the fender liner does not interfere, then without removing it, unscrew the bolt securing the pulleys and first of all, remove the large pulley from the crankshaft, there is a washer installed on it, so as not to lose it, remove it from the large crankshaft pulley (see. photo 2), then remove the belt from the small pulley (see photo 3) and finally, remove the small pulley itself from the shaft, that’s all, you can assume that you have reached the oil seal, but there is one nuance, there is a key on the crankshaft pulley, so as not to lose it, carefully remove it with pliers and set it aside (see photo 4). When this is done, you can remove the oil seal from the oil pump cover using thin screwdrivers. When you remove it, pay attention to which side it is facing, Install the new oil seal in the same way.

Installation: The oil seal is installed using a piece of pipe or a head of suitable diameter, that is, it is first leaned against its seat, and then hammered inside (see photo 1), the oil seal should fit clearly, if necessary, fill it in with a screwdriver or a pencil, when everything is finished with installing the oil seal, install both pulleys in their place and note that in order to install the large pulley on the small one, holes B and A will have to coincide with each other, do not forget to install the key on the crankshaft and before installing the large pulley, put the belt on a small one (By the way, install the belt in exactly the same way as it was, usually there is an arrow on them, it should point in the same direction as it looked when removing it, or just change the belt to a new one, you can install it however you want pulleys and rollers), after assembly, start the car and see if oil is thrown out through the oil seal.

Note! Before installation, the oil seal is lubricated with engine oil and exactly the same oil that is poured into the car’s engine, this is done only to make the oil seal easier to install (And the working edge needs to be lubricated, it is indicated by an arrow in the photo below)!

Additional video clip: Watch the video below, it shows the replacement of camshaft oil seals, as well as the replacement of the front crankshaft oil seal. If you do not change the camshaft oil seal, you do not have to remove their pulleys from the car.

Sources used:

https://m.etlib.ru/report/1372-zamena-salnika-kolenvala-vaz-2110
https://vaz-2110.ru/dvigatel/zamena-salnika-kolenvala-na-vaz-2110.html
https://vaz-rukovodstvo.ru/2110/2-8-4-210vaz.htm
https://vaz-russia.com/remont-vaz-2110/zamena-perednego-salnika-kolenvala-na-vaz-2110-vaz-2111-vaz-2112.html

Why do you need to change crankshaft seals?

Oil leaks on the rain cover may also indicate wear of the crankshaft oil seal.

Replacing parts that have expired and do not perform the necessary functions allows you to avoid failure of other parts, which extends the overall life of the vehicle.

Replacing crankshaft oil seals does not depend on operating time or total mileage. It depends on the:

Operating conditions.
The age of the car.
Driving style.
Periods of engine maintenance and prevention.

Oil seals can be changed in a timely manner if cracks are visible on their surface and the rubber loses elasticity . Such measures will significantly extend the life of the motor.

Consequences

A worn oil seal is no longer able to hold oil, which begins to come out and settle on surfaces.

If you do not change the seals in time, this can lead to the following consequences:

Oil consumption will increase significantly.
Dirt will begin to accumulate under the hood, which can lead to unstable engine operation.
Rubber parts under the hood that get oil on them will begin to deteriorate.
If oil gets on the battery terminals, it will break the contacts and, accordingly, there will be problems with starting the car.

And the oil seal may simply suddenly collapse, which can lead to undesirable consequences on a long journey.

Changing crankshaft seals on a VAZ-2110 8-valve engine with your own hands

Any oil leak from car components is a serious cause for concern. Having discovered oil stains under the car, you need to immediately find out the cause of their occurrence. Most often, oil leaks occur in the VAZ-2110 due to poor-quality or worn-out crankcase housing gasket or oil filter. These problems are not serious and can be fixed quite easily.

But if oil stains are found under the hood, everything can be much more serious. As a rule, this indicates failure of the crankshaft seals. Replacing these parts is a more complex process than replacing pan gaskets or housings.

Work order

First of all, we disconnect the negative terminal, as a result of which we de-energize the VAZ-2110. After this procedure, it is necessary to remove the protection of the timing belt and the car engine.
We loosen the tense timing belt, and then simply remove it, making sure that the marks match.
We remove the right wheel in front of the VAZ. After completing the manipulations with the wheel, the generator drive belt is also removed, after which you must unscrew the bolt securing the crankshaft pulley.
The engine oil is drained and the oil pump, to which the front oil seal is attached, is dismantled. We replace the cuff and carefully coat it with sealant.
The cuff on the inside is generously coated with oil, then remove the seal and take out the front cuff of the car. We collect all this in the reverse order of the above steps.

Replacing the rear cuff will be much more difficult. The procedure for carrying out repair actions is as follows:

We remove the negative terminal from the battery, after which it is necessary to remove the clutch basket. After these procedures, we proceed to dismantling the flywheel, and then to removing the crankcase casing.
The rear oil seal holder is removed by unscrewing the tightened bolts securing it. We unscrew the bolts that secure the flywheel.
While holding the latch, you need to pull out the seal. To do this, you can use a vice and inspect the fixing part of the cuff. If there are any defects in it, this part is also replaced, and then the working edge of the new cuff is placed inside the retainer and the gasket is replaced.
The edge of the crankshaft together with the flange is generously coated with oil. We install the holder, very carefully tucking the working edge of the sealing ring onto the flange. Reassembly after repair is carried out in the reverse order. After making repairs, you need to check from time to time to see if engine oil is leaking.

Do-it-yourself replacement of the front and rear crankshaft oil seals

Replacing the crankshaft oil seal is a labor-intensive, but technically not very difficult task, which any car owner who has basic skills in repairing his vehicle can cope with.

To perform the manipulation you will need a garage, pit or lift, as well as several hours of free time. The least difficult part is replacing the front crankshaft oil seal. The rear element, located behind the gearbox, clutch basket and flywheel, requires much more time and labor.

When do you need to change seals?
Tools and materials
Replacement procedure
Replacing cuffs on a “classic”
Replacing oil seals on front-wheel drive cars produced by AvtoVAZ
Evaluation of results
Interesting Facts

When do you need to change seals?

A direct indication for replacing the crankshaft seals on the VAZ-2114, VAZ-2106 and other domestically produced cars is their destruction and oil leakage in the area of the AC pulley or in the area of the rear part holder. The procedure is also carried out during related work, which includes replacing the flywheel, replacing the crankshaft, replacing the clutch, and the like.

It is worth noting that cuff repair itself does not take much time. Almost the entire scope of work is represented by the disassembly and dismantling of units that hide the necessary parts underneath. On average, the work of removing and reassembling the front element takes 1-2 hours, the rear element takes 5-8 hours if the work is done in a garage. Car service specialists perform it within 2-3 hours.

Tools and materials

Replacing the crankshaft oil seal on VAZ-2109 vehicles, as well as all other vehicles produced by VAZ, regardless of the type of power unit, will require the following set of tools:

Pit, lift or jack;
Car stands (if a jack is used);
A set of wrenches, including spanners;
Hammer;
Slotted screwdriver;
Crosshead screwdriver;
Gasoline, kerosene or other solvent;
Engine oil;
New spare parts;
Silicone sealant.

Note: when buying new rubber bands, you need to make sure that there are springs inside them - metal rings located on the inner surface of the element. Car dealerships often come across defective products without springs. Some car owners shorten the spring before installation, claiming that this improves the characteristics of the oil seal.

Replacement procedure

The procedure for replacing the oil seal on a VAZ-2107, 2106 and other “classic” models is no different. Front-wheel drive vehicles have some differences in the preparatory work due to the different location of the power unit. At the same time, engines with 8 valves (VAZ-2115, 2110) and 16 valves (Kalina, 2112) do not have any fundamental differences in replacing the elements in question.

Replacing cuffs on a “classic”

Replacing the rear crankshaft seal on a “classic” is carried out exclusively on a pit or a lift, since only such conditions allow you to safely dismantle the gearbox. The procedure is performed in the following sequence:

installing a car in a pit;
dismantling the driveshaft;
dismantling the gearbox;
dismantling the clutch;
dismantling the rear cover of the clutch housing;
dismantling the holder;
removing the old element and pressing in the new one;
reverse assembly.

The old seal is removed using a hammer and a drift, inserting the latter into the holes for the crankcase mounting bolts and applying light blows with a hammer. Before pressing, the new cuff is lubricated with engine oil or silicone sealant. Pressing is carried out by carefully striking the seal with a hammer or using a mandrel.

To dismantle and replace the front gasket, you will need to remove the power unit cooling fan and the generator belt. After this, you need to unscrew the nut and remove the crankshaft pulley. The element itself is located below it. To avoid difficult work on removing the front engine cover, the element is removed using a slotted screwdriver.

If this cannot be done, dismantling and replacing the VAZ-2107 crankshaft oil seal is carried out using a self-tapping screw. It is screwed into the side of the cuff, after which the element is pulled out with an ordinary nail puller. Before pressing in a new gasket, its seat should be cleaned of dirt. Pressing is carried out by analogy with the rear cuff.

Rear crankshaft oil seal VAZ 2110. Replacement on an 8-valve engine

Replacing the back cuff is a more difficult task compared to replacing the anterior cuff. It will take a little more time and effort to get the job done. Let's take a closer look at how to do this:

Disconnect the battery.
We remove the flywheel; to do this, you need to disconnect the gearbox from the engine.
Loosen the bolts securing the holder and carefully press out the part.
Carefully press in the new cuff. It's better to use a mandrel.
Coat the joints of the holder with sealant and assemble everything in reverse order.

The difficulty is that you need to get to the back of the engine, which requires you to do the routine work of disconnecting the gearbox from the engine and removing the flywheel.

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Features of replacing oil seals on a 16 valve engine

The difference in replacing the front crankshaft oil seal on a 16-valve and 8-valve engine is only in the number of pulleys. To correctly align the timing marks, the timing marks on the rear timing belt guard must align with the timing marks on the exhaust and intake timing gear pulleys. Accordingly, when removing the crankshaft timing pulley, the TDC mark must coincide with the installation mark on the oil pump cover.

Replacing the rear crankshaft oil seal on a 16-valve VAZ 2110 engine is carried out similarly to an 8-valve engine.

Using a 10mm wrench, unscrew the three bolts of the front timing cover. Remove the timing cover.

Rotate the lower pulley until the mark on the camshaft toothed pulley aligns with the installation tab on the rear timing cover. By removing the rubber plug in the upper part of the clutch housing, we make sure that the mark on the flywheel is located opposite the slot in the clutch housing cover.

Using a 17mm wrench, loosen the nut securing the tension roller. Turn the tension roller to a position in which the belt will be loosened as much as possible. Remove the timing belt.

Unscrew the bolt securing the generator drive pulley. Remove the generator drive pulley. Use a screwdriver to pry up the crankshaft toothed pulley and remove it from the crankshaft toe.

Removed generator and crankshaft drive pulley.

Use a screwdriver to pry up the seal and remove it from the cover.

We take a new oil seal, lubricate the working edge with engine oil and press-fit a suitable piece of pipe.

To replace the rear crankshaft oil seal, you will need to remove the gearbox and clutch. Using a 17mm socket, unscrew the six flywheel mounting bolts.

Mark the position of the flywheel relative to the crankshaft.

Having screwed a self-tapping screw into the oil seal, pry up the oil seal and remove it from the holder, helping with a screwdriver.

Using the old oil seal as a mandrel, press in the new oil seal. We install the flywheel according to the marks. Lubricate the threaded part of the bolts with sealant.

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