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.

Diagnostics and signs of malfunctions of VAZ 2110 oil seals

To correctly diagnose a car for oil leaks, you need to make sure that the supply system, oil filter, crankcase ventilation system are not clogged, and that the flow capacity of the hoses is not impaired. If the leaks on the engine do not disappear, the seals need to be replaced.

An oil seal (radial seal or shaft seal) is a rubber-metal product that ensures the sealing of rotating joints of car parts. During operation, the cuff does not touch the surface of the shaft, and the parts are sealed using special notches in the area of shaft rotation due to the vacuum they create.

A characteristic sign indicating the need to replace the oil seal is traces of oil leakage through the lip of the seal. Since the crankshaft pulley rotates quite quickly, the oil atomizes, resulting in the entire front part of the engine and the auxiliary drive belt becoming oily. Another symptom that makes it inevitable to replace the crankshaft rear oil seal is the appearance of engine oil at the junction of the cylinder block and the clutch housing.

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 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.

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.

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.

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.

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.

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.

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.

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.

When and why do you need to change crankshaft oil seals?

Today this part is a very important part of the car. This is due to the fact that even with a slight displacement an oil leak will appear.

According to experts, it is worth replacing the oil seal at least once every three years. Although, this period of time is conditional, since in some situations it may be necessary to perform unscheduled repairs. For example, in case of engine overheating.

It is worth starting unscheduled repairs only if there are certain signs indicating the need for such work. In this case, an oil leak may be an alarm.

During any repair, the master must have a certain set of tools and materials on hand. When replacing oil seals, you do not need to use specific equipment. It is enough just to choose the appropriate size seals. Do not forget that these parts in a car, presented on the domestic automobile market, can be single-edged, as well as with or without anthers. Replacing oil seals should only be done with similar models.

Many modern car owners believe that only a qualified specialist working in a car workshop can change oil seals. This is a misconception, since today there are a huge number of manuals and recommendations posted on the Internet, thanks to which the work process is simplified.

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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