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

Oil seals (cuffs) perform a number of important functions in the operation of the engine and other elements of the car. Outwardly, they resemble simple rubber rings, but hidden inside are flexible and thin springs that fit as tightly as possible to the axis of the crankshaft (inner part) and the engine housing (outer part). To understand the importance of these seemingly simple rubber bands, you need to know the roles of these elements in engine operation:

• Protection of the internal cavity of the engine from external factors: dust, dirt and moisture. External factors can have a very detrimental effect on engine performance.
• Preventing oil from leaking through the exit points of the crankshaft axis from the engine housing. The consequences are similar to the previous case - the engine will not work for a long time without oil.

Thus, any seal failure, be it damage or wear, can lead to costly repairs to the entire engine, so it is important to replace them promptly.

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.

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:

1. Car keys;
2. Timing belt tensioner;
3. Set of screwdrivers with bits;
4. Waste collection container;
5. Antifreeze or high-quality graphite lubricant;
6. Container with motor oil;
7. Heat-resistant sealant;
8. 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.

Stories from our readers

“Fucking basin. "

Hi all! My name is Mikhail, now I’ll tell you a story about how I managed to exchange my two-wheeler for a 2010 Camry. It all started with the fact that I began to be wildly irritated by the breakdowns of the two-wheeler, it seemed like nothing serious was broken, but damn it, there were so many little things that really started to irritate me. This is where the idea arose that it was time to change the car to a foreign car. The choice fell on the melting Camry of the tenth years.

Yes, I had matured morally, but financially I just couldn’t handle it. I’ll say right away that I am against loans and taking a car, especially not a new one, on credit is unreasonable. My salary is 24k a month, so collecting 600-700 thousand is almost impossible for me. I started looking for different ways to make money on the Internet. You can’t imagine how many scams there are, what I haven’t tried: sports betting, network marketing, and even the volcano casino, where I successfully lost about 10 thousand ((The only direction in which it seemed to me that I could make money was currency trading on the stock exchange, they call it Forex. But when I started delving into it, I realized that it was very difficult for me. I continued to dig further and came across binary options. The essence is the same as in Forex, but it’s much easier to understand. I started reading forums, studying trading strategies. I tried it on a demo account, then opened a real account. To be honest, I didn’t manage to start earning money right away, until I understood all the mechanics of options, I lost about 3,000 rubles, but as it turned out, it was a precious experience. Now I earn 5-7 thousand rubles a day. I managed to get the car buy after half a year, but in my opinion this is a good result, and it’s not about the car, my life has changed, I naturally quit my job, I have more free time for myself and my family. You’ll laugh, but I work directly on the phone)) If If you want to change your life like me, then here’s what I advise you to do right now: 1. Register on the site 2. Practice on a Demo account (it’s free). 3. As soon as you get something on the Demo account, top up your REAL ACCOUNT and go to REAL MONEY! I also advise you to download the application to your phone, it’s much more convenient to work from your phone. Download here.

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.

see also

Replacing the gear selector rod oil seal Opel Zafira A

11 0 5k

How to determine the knock of the connecting rod bearing?

0 2 5k

Is it possible to install the main crankshaft cover from another engine?

0 1 998

Replacing the crankshaft VAZ 2110

9 0 9k

Which is the best crankshaft pulley for VAZ 2110

0 1 2k

Oil stains under a car are quite a serious cause for concern.
If the cause of the leaks is in the crankcase housing gasket or oil filter, then everything is not so bad - replacing them is relatively easy and they do not create additional problems. The situation is different if there are oil stains under the hood, in particular on the alternator belt. In addition to the fact that you will have to change the belt, this may indicate leaky crankshaft or camshaft seals, which are much more difficult to change.

This photo report demonstrates how crankshaft oil seals are replaced on a VAZ 2110.

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

1. Disconnect the negative terminal from the battery. This will completely de-energize the car and avoid unpleasant situations.
2. Remove the flywheel.
3. Remove the rear protective cover from the engine crankcase.
4. Next, we disconnect the fastening bolts from the oil seal retainer, after which it can be removed together with the seal outward.
5. 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.
6. The holder is probably covered with dust and dirt. Be sure to delete it.
7. 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.
8. 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.
9. 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.
10. Lubricate the crankshaft lips and flange with regular engine oil. This will make it easier to return the holder to its seat.
11. To make it more comfortable for you, use a wooden stick to support the lip on the oil seal.
12. 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.

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.

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:

1. Check the oil supply system for blockages.
2. Oil filter.
3. Hoses for their integrity.
4. 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.

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:

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:

1. At the first stage, the tension of the generator belt is weakened
2. The belt is completely removed from the pulley
3. The nut that serves to clamp the pulley is unscrewed
4. Remove the pulley from the shaft
5. In car modifications with a transverse engine, the oil pump housing is removed
6. Pry a screwdriver under the oil seal and remove it from its seat
7. Installing a new seal
8. 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:

1. We dismantle the gearbox along with the clutch basket, do not touch the flywheel
2. Loosen the bolts securing the flywheel to the engine
3. To set the flywheel to a static position, fasten one gearbox mounting bolt and insert a screwdriver, resting the teeth against the mechanism
4. We remove the retaining plastic, and only after that the flywheel itself
5. Unscrew the rear clutch shield and release the fasteners connecting the rear engine cover
6. Find the rear oil seal and remove it with a screwdriver
7. Lubricate the seat
8. 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:

1. A set of keys or sockets. Among them there must be keys for 10, 13 and 19.
2. Several screwdrivers.
3. Pliers.
4. 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.
5. 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:

1. 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.
2. 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.

3. 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.

4. 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.

5. The crankshaft must be fixed.

   You can fix the crankshaft with a screwdriver...

   ...or lock the camshaft pulley.

6. 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.

7. 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.

8. 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.

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.