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

Noticed oil stains under your car? There may be several reasons for this. The simplest is leaks in the oil filter gasket. Replacing them is not at all difficult. But when it comes to problems with the crankshaft, then the task becomes a little more complicated.

You can replace the crankshaft oil seal on a VAZ 2110 either independently or contact specialized services. When making repairs yourself, it is important to prepare well so as not to make critical mistakes.

Oil stains usually appear much earlier than stated in the manufacturer's warranty.

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.

Instructions

You can replace the oil seals on a VAZ yourself. To do this, you should find a place where the operation will be performed; it is better to use an inspection hole or overpass.

Required Tools

To perform the procedure you need to prepare:

set of sockets and keys;
screwdrivers with bits;
container for draining the working fluid;
new cuffs;
sealant.

To avoid fakes, you should buy originals from well-known manufacturers.

Stages

The procedure for replacing the front crankshaft seal consists of the following steps:

The negative terminal of the battery is disconnected to de-energize the car.
We remove the timing belt and engine protection.
Then you should loosen the timing belt tension and remove it. In this case, you need to ensure that the marks match.
Next, unscrew and dismantle the right front wheel.
Now remove the generator drive belt.
Then you need to unscrew the mounting bolt and remove the crankshaft pulley.
Drain the oil from the engine.
We dismantle the oil pump on which the front oil seal is installed.
We replace the front cuff with a new one, lubricating it on the outside with sealant and on the inside with machine oil.
Assembly is carried out in reverse order.

Replacing the back cuff is a little more complicated and involves the following steps:

First of all, the negative terminal from the battery is disconnected.
Then you need to remove the clutch basket.
Next, the flywheel is dismantled.
Remove the clutch housing protective cover.
Unscrew the bolts securing the rear oil seal holder and remove it together with the seal.
Having secured the clamp in a vice, remove the seal.
We inspect the cuff retainer. If defects are found, the part must be replaced.
Using a suitable mandrel, insert the new cuff into the holder with the working edge inside the retainer.

What is the crankshaft oil seal for and where is it located?

The main purpose of the oil seal is to prevent engine oil from leaking from the engine. Reliable sealing of the holes is possible due to the pressure inside the crankcase, which ensures the tightest possible pressure of the oil seal to the part. Thanks to this principle of operation, the liquid in the internal combustion engine system does not leak and does not subject the engine components and assemblies to excessive frictional loads.

The oil seal is made of heat-resistant material: fluorine rubber, silicone. Also on the outside of the seal you can see some notes; most often, they tell the driver in which direction the crankshaft is rotating. Information is necessary in order to correctly install new sealing elements

The design of the power plant determines the presence of two oil seals - front and rear. The rear rubber product is designed for installation on the part of the crankshaft that connects to the flywheel. The crankshaft end is a flange, so the rear seal has impressive dimensions and a fairly large amount of material, which ensures its long service life.

The front rubber element is mounted on the limit switch, which is the drive for the engine mechanisms. Its dimensions are smaller than the similar part at the other end, therefore the front oil seal is significantly inferior in terms of service life.

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.

Replacing the crankshaft oil seal on a VAZ 2110 8 valves

In this section we will talk about dismantling the front crankshaft cuff. To carry out this work, you will need a standard set of keys, screwdrivers and, of course, new cuffs. Drive the car onto a lift, pit or overpass, and then start working according to the algorithm:

Disconnect the negative terminal from the battery. Remove the toothed belt guard.
Remove the timing belt. If oil is found on it, it also needs to be replaced.
Remove the right wheel of the car, then remove the alternator belt.
Unscrew the crankshaft pulley mounting bolt and remove it.
Drain the oil and replace it.
Reassemble in reverse order.

Remember that you should not save on these parts - their cost is not high, but replacement work is quite a lot. Plus, a poor quality product can end up causing serious engine damage, which will drain your wallet and waste a lot of your time.

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.

Why is it necessary to change on time?

Naturally, timely repair of parts that have become unusable will extend the life of both the engine and the VAZ-2110 vehicle itself. The time after which it is necessary to change the oil seal directly depends on how old or new the car is, on the driving style of the car owner and operating conditions.

If you change them in a timely manner, this will help reduce the cost of car repairs, because such measures eliminate engine oil leaks, which negatively affect the operation of the engine.

If you do not change it in time, the VAZ-2110 car will “eat” more motor oil, and the engine itself will begin to collect dirt and dust, which cannot but affect the stability of its operation. Engine oil leaks negatively affect car parts that are not made of metal, and the contact in the terminals will become much worse, which, in turn, will affect how the car starts.

Any car has parts, for example, crankshaft cuffs, that need to be changed according to the manual or as they wear out. Replacing the VAZ 2110 crankshaft oil seal, as well as valves, can be done at a service station or with your own hands.

Quick disassembly method

Some experts suggest a risky removal option without removing the cover. All operations must be carried out directly with the engine open. This method saves a lot of time, but with little experience it can do more harm than good. After removing the old oil seal, a new part is installed on the shaft. This must be done very carefully so as not to damage the polished glass surface. If the shaft is damaged, the oil seal quickly wears out, a new engine oil leak appears, and all actions will need to be repeated.

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.

Rear SC

The procedure for replacing the rear motor assembly is noticeably more complicated than the front one, so not everyone will decide to carry out such work on their own. We recommend that you consult first and watch training videos.

To replace the rear AC, you will have to spend a little more time and effort. The work is not easy, but with the right approach, a positive result can still be achieved.

Rear SC

Disconnect the negative terminal from the battery. This will completely de-energize the car and avoid unpleasant situations.
Remove the flywheel.
Remove the rear protective cover from the engine crankcase.
Next, we disconnect the fastening bolts from the oil seal retainer, after which it can be removed together with the seal outward.
Be sure to arm yourself with a core or mandrel. Using these tools, you can press the crankshaft rear oil seal out of its seat - the race. The element itself is clamped in a vice, after which the problematic component is exposed to the tool.
The holder is probably covered with dust and dirt. Be sure to delete it.
Now carefully examine the condition of the surface. Even if there is even minor damage to the retainer, it will have to be replaced along with the oil seal itself.
Now select a suitable mandrel so that its size matches the parameters of the new oil seal. Insert the spare part into its place. In this case, it is important that the working edge of the new oil seal is directed with the working edge inside the retainer, that is, the holder.
Be sure to change the seal on the retainer. This is done regardless of the condition of the seal on the old crankshaft oil seal.
Lubricate the crankshaft lips and flange with regular engine oil. This will make it easier to return the holder to its seat.
To make it more comfortable for you, use a wooden stick to support the lip on the oil seal.
Now all that remains is to perform the reassembly procedure, following the specified sequence of dismantling work.

The basis for successful replacement of front and rear joints is patience, attentiveness and perseverance. If you rush, rush, nothing good will come of it, and you will have to go to a service station and pay a lot of money.

How to determine the wear of oil seals on a VAZ-2110

An oil leak from under the clutch housing cover can be seen if you drive the car into an inspection hole.

If oil leaks are found on the car engine housing, you should not immediately buy new oil seals and change them.

The oil seal itself is a product made of a combined material. In this case, it is rubber and metal. The purpose of the oil seal is to provide a tight seal between the rotating parts of the car. In another way, the oil seal is called the shaft cuff.

Before changing oil seals, you need to check the following engine parts and systems:

Check the oil supply system for blockages.
Oil filter.
Hoses for their integrity.
Crankcase ventilation system.

Cuff edges

When you see these drips, suspicion falls on the front crankshaft oil seal.

You can verify this by removing the timing cover.

If all these systems are in working order, and oil leaks on the engine do not disappear, it means that the seals have most likely become unusable. The most characteristic sign that indicates the deterioration of the seals is traces of oil smudges on the edges of the cuff.

Since the crankshaft pulley rotates at high speed, oil gets onto the entire front part of the engine, and the accessory belt also becomes oily. Such a belt will have to be changed, since its contact with oil is unacceptable. In addition, there is another sign indicating wear of the rear oil seal. These are traces of oil on the joints of the clutch housing and cylinder block.

Instructions

You can replace the oil seals on a VAZ yourself. To do this, you should find a place where the operation will be performed; it is better to use an inspection hole or overpass.

Required Tools

To perform the procedure you need to prepare:

To avoid fakes, you should buy originals from well-known manufacturers.

Stages

The procedure for replacing the front crankshaft seal consists of the following steps:

Replacing the back cuff is a little more complicated and involves these steps.

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.

How is the crankshaft oil seal replaced?

To successfully complete the task, you first need to arm yourself with all the necessary tools and prepare an inspection hole in the garage to perform a whole range of work.

Developments from the following manufacturers are recommended for purchase:

Name	Manufacturer	Price
Victor Reinz	Germany	350 rubles
Elring	Germany	300 rubles
Ajusa	Spain	650 rubles
Espra	Spain	250 rubles
Goetze	Germany	600 rubles

Screwdrivers, wrenches, sockets, and new seals should be on hand. All work comes down to separate replacement of the front and rear crankshaft oil seals.

Changing the front oil seal

Access to the front crankshaft oil seal largely depends on the specific make of the car, so before carrying out all the work, it is advisable to read the operating instructions with all the necessary information. For owners of domestic cars, in particular the VAZ brand, all work comes down to the following steps:

At the first stage, the tension of the generator belt is weakened
The belt is completely removed from the pulley
The nut that serves to clamp the pulley is unscrewed
Remove the pulley from the shaft
In car modifications with a transverse engine, the oil pump housing is removed
Pry a screwdriver under the oil seal and remove it from its seat
Installing a new seal
We assemble the parts in reverse order

It is advisable to treat the junction of the oil seal with the crankshaft with machine oil and apply the substance to the outer surface of the seal and the output end of the shaft.

Changing the rear oil seal

This type of work requires a lot of time and effort from the car owner. To get to the rear oil seal, you need to disassemble the cardan and disconnect the box and clutch housing. The next steps are as follows:

We dismantle the gearbox along with the clutch basket, do not touch the flywheel
Loosen the bolts securing the flywheel to the engine
To set the flywheel to a static position, fasten one gearbox mounting bolt and insert a screwdriver, resting the teeth against the mechanism
We remove the retaining plastic, and only after that the flywheel itself
Unscrew the rear clutch shield and release the fasteners connecting the rear engine cover
Find the rear oil seal and remove it with a screwdriver
Lubricate the seat
Press in a new copy with a screwdriver

It would not be superfluous to replace the rear cover gasket; it is also advisable to lubricate all contacting parts with machine oil during work. Then we assemble the entire assembly in reverse order.

Necessary tool

In order to change the seals, you need to prepare the following set of tools:

A set of keys or sockets. Among them there must be keys for 10, 13 and 19.
Several screwdrivers.
Pliers.
Prepare a special container for draining the oil. It can be made from a plastic canister, which is cut into two parts. Cut-up five-liter water bottles will also work.
New seals.

Front crankshaft oil seal.

Rear crankshaft oil seal.

Articles

As for new oil seals, it is better to change the front and rear at once. They are also called big and small.

The most popular parts are from AvtoVAZ, with article numbers 21080100516000 and 21081005034.
A better quality seal kit is from ESPRA, with catalog number E07418. A foreign manufacturer costs twice as much.

A set of branded ESPRA oil seals.

Replacement algorithm

In order to replace a part, you need to perform the following sequence of actions:

First of all, you need to drain the oil from the engine. To do this, you will need an empty container of at least four liters.
Next, remove the front timing belt cover.
Unscrew the two bolts on the sides of the cover.
Unscrew one bolt in the center of the cover.
Remove the timing cover.
You need to raise the right front part of the car using a jack and remove the front wheel.
Jack up the front and remove the wheel.
The camshaft must be turned clockwise by the bolt. You need to align the marks on the pulleys.
Align the mark on the pulley with the installation tab on the cover.
The crankshaft must be fixed.
You can fix the crankshaft with a screwdriver...
...or lock the camshaft pulley.
The generator drive pulley is removed.
First, under the hood, loosen the tension of the generator belt, then through the wheel arch, using a 17-mm spanner, unscrew the bolt and remove the pulley.
Next you need to remove the timing belt. To do this, the tension roller must be turned so that the belt is in its loosest position.
Loosen the roller and remove the timing belt.
The toothed pulley is removed. For this, two screwdrivers are used.
Usually the pulley can be easily removed.
But you may need a puller.

Only after this can the old oil seal be removed. For this you also need to use a screwdriver.

Under the pulley we see oil and an old oil seal.

We take out the worn oil seal and clean the surfaces.

Before installing a new oil seal, you need to lubricate its edge with machine oil. Only after this is it pressed in.

If the toothed pulley is completely rusted and there is no puller at hand, watch a video on how to remove the gear using the third method:

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.

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.