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.

Self-replacement of the front and rear crankshaft oil seals on a VAZ 2110

Regardless of the level of quality and reliability of a car part, each of them has a certain safety margin. Nothing is eternal. Especially the car and its components.

Therefore, the only solution for a modern car owner is to carry out timely prevention. And if the breakdown turns out to be unpredictable, then repair will help. Independently or with the help of service stations is a completely different question, essentially depending on the degree of complexity of the breakdown.

Agree that it is extremely important to maintain the functional characteristics of your engine. One of the reasons for its malfunction is a worn crankshaft oil seal. The instruction manual states that this element must be diagnosed approximately once a year, and replacement is scheduled to be carried out every three years. But sometimes not everything goes according to plan, and the oil seal fails ahead of schedule. Today we will talk about how to act in such situations, what may be the reasons for the premature breakdown of the SC, as well as how to replace it with your own hands.

Element appearance

Causes of failure

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.

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 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, To avoid losing it, use pliers to carefully remove it and put 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.

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.

The main reasons for device failure

How to replace a crankshaft bearing

The main factor indicating that crankshaft oil seals on VAZ 2110 models require increased attention is the numerous oil flows in the engine system, which arise under the influence of a number of reasons, including:

Aging of the unit and its natural, physical wear;
Problems with the installation of the device or its incorrect installation, which entails the occurrence of cracks on the working plane of the cuff;
Various mechanical damages;
Use of low-quality rubber.

The following set will be useful for work:

Set of car keys;
Screwdrivers with various attachments;
Key for tensioning the timing belt;
Graphite lubricant or antifreeze;
Waste container;
Canister with motor oil;
Heat-resistant sealant.

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.

Causes of leakage

First, let's look at the reasons why it leaks from under the crankshaft oil seal. Before looking for the location of the leak, you need to figure out which specific element has failed.

A car may have two oil seals:

Front. This part is characterized by its small size and low service life. It usually breaks and leaks more often.
Rear. Typically, the service life of this part is longer. As a rule, it corresponds to the service life of the vehicle as a whole. The rear oil seal is larger than the front one.

Leaking crankshaft oil seal

Below are the reasons why it is necessary to remove and replace the oil seal:

Natural wear and tear. Car owners encounter this problem when their vehicle has driven more than 100 thousand km. Natural wear is caused by vibrations generated by the crankshaft, which contributes to the destruction of the internal component of the part. After all, the oil seal is tightly attached and adjacent to the shaft. Over the course of its service life, the device will break down and may lose its shape, causing it to move away from the surface of the assembly.
Structural destruction as a result of prolonged parking of a vehicle on the street in winter. If the car is not used, the oil seal may dry out or harden due to prolonged exposure to negative temperatures. As a result of drying, the device will not be able to fit tightly to the crankshaft.
New parts leak due to manufacturing defects. If the oil seal does not last long, the problem is the poor quality of the material used to develop it. To prevent such a problem, experts recommend not using parts from unknown manufacturers on cars.
Errors made during installation. The problem occurs when the device is unevenly mounted on the crankshaft. When installing, the oil seal is driven into the seat using a hammer with gentle blows. But it is better to use a special installation tool, this will make the process easier and will not damage the device.
Problems in the operation of the power unit. The appearance of defects in engine operation, such as an increase in crankcase gas pressure, can lead to leakage. Because of this, the oil seal is forced out. At the point where the part adheres to the crankshaft, a gap appears through which engine fluid escapes.

Visual instructions for replacing the device are provided by the KozTas channel.

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.

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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Replacing the rear crankshaft oil seal VAZ 2110, 2112

10.02.2015,

Category Lada engine |

Greetings, dear readers, to our website. Today we will look at replacing the rear crankshaft oil seal of VAZ 2110 and 2112 cars. We will do this on a demo engine. To begin with, you will need to remove the gearbox and clutch so that you can easily get to our worn oil seal and replace it.

The process of replacing the rear crankshaft oil seal.

We take a 17mm wrench and unscrew the six bolts securing the flywheel (having previously marked its position relative to the crankshaft). After the flywheel is unscrewed and removed, use a flat-head screwdriver to pry off the old worn oil seal and carefully remove it from the holder.

Installing a new oil seal.

Using the old oil seal, we need to press in the new one, lay it on top, tap it carefully with a hammer. Finally, we install the flywheel back according to the marks, having previously lubricated the threaded part of the bolts with sealant to prevent them from unscrewing. We put the gearbox in place and this completes the replacement process, good luck. If you have any questions, ask us in the comments.