Instructions for replacing the silent blocks of the front levers on a VAZ 2108 car

Features of choosing silent blocks

To carry out the work, you first need to buy new elements. For VAZ-2109, you should select hinges according to the catalog number (2109-08-054). When purchasing, it is important not to confuse them with the hinges for the 2110 model, since the size of the silent block of the rear suspension of the VAZ-2109 is different (they are slightly smaller in diameter). Although it is quite possible to install a “tenth” element, pressing it in will be somewhat more difficult.

size of silent blocks of the rear suspension of VAZ 2109

As for the front end, you can purchase assembled VAZ-2109 front suspension arms (with silent blocks) and install them. But this is not economically feasible, since levers are much more expensive than rubber elements. And although replacing silent blocks is a more labor-intensive operation compared to replacing a lever, repairs will cost many times less.

rubber silent blocks and polyurethane

As for the choice of hinges based on the elastic material used, VAZ silent blocks can be purchased in both rubber and polyurethane. The latter have a longer service life, but they are tougher and more expensive. But in general, the car owner himself will have to decide which elements to purchase.

Consequences of consumables malfunction

It should be noted that silent blocks and bushings are consumables.

Due to heavy loads, it is possible that the rubber part of the silent block may be pressed through, detached from the metal bushing, and the rubber itself may delaminate. As a result, they are no longer able to work properly.

This results in knocking from the suspension, the appearance of creaks, when driving, especially over uneven surfaces, the car can throw from side to side, and the more wear on the silent blocks, the stronger the tossing will be.

Also, due to worn silent blocks, the angles of the wheel position - camber and toe - change, because of which the car will no longer hold the road, it will begin to drift in any direction, the tires will quickly wear out due to incorrect angles.

So, the condition of all rubber elements of the car suspension must be constantly monitored, and if signs of malfunction appear, they must be promptly replaced.

With certain knowledge and the availability of tools, you can replace silent blocks yourself without contacting a service center.

It should be noted right away that even if damage to one or two silent blocks is detected, it is better to completely replace all rubber parts of the suspension, and not just the damaged ones.

Also, all elements are replaced immediately on the left and right sides of the car.

Replacing rubber joints on the rear suspension

More on how things are changing. First, let's look at how to replace the rear silent blocks of a VAZ-2109. To perform the operation you will need:

First, the silent blocks of the rear beam of the VAZ-2109 are replaced. For this:

1. We put the car in a pit, jack up the rear on one side, remove the wheel;
2. Unscrew the nut of the bolt securing the beam to the body, remove the bolt;
3. Using a pry bar, we press the beam down to remove it from the bracket, fix it in this position (by installing a wooden spacer between the beam and the body);
4. Using a hammer, carefully knock out the worn hinge;
5. Using a device (a long bolt with a nut, two wide washers and a piece of pipe), we press in a new element, having previously generously lubricated the seat and the hinge itself with soapy water;
6. We install the beam into the bracket and fix it with a fastening bolt;

After this, the silent blocks of the VAZ-2109 rear pillar are replaced:

1. Unscrew the fastening of the rack to the body (top) and beam (bottom);
2. We press the beam down so that the stand goes down and the spring relaxes;
3. Remove the stand;
4. Using a silent block remover, remove the hinge from the rack body (bottom);
5. We press in a new silent block using a vice;
6. We tighten the springs with ties, then put the stand in place and secure it;
7. Remove the ties;

Similar operations are carried out on the other side of the rear of the car. After assembly, you should check the tightness of all fasteners that have become loose. This should be done again after a couple of days of using the car.

Replacing consumables, eliminating axial play

Having dismantled the suspension elements, you can begin to press out the worn silent blocks and install new ones.

Using a special device prepared in advance, old silent blocks are removed from the crossbar, levers and racks and new ones are pressed into their place.

To facilitate installation, new consumables can be moistened with soapy water.

But the use of petroleum-based lubricants is not recommended, since they have a negative effect on rubber elements.

Regarding the stabilizer struts, before pressing out, they will need to be knocked off the stabilizer, since they are tightly seated on it.

When knocking down, it is better to use a hammer and strike through a wooden spacer.

Also, after removing the struts, the rubber bushings are pulled off the stabilizer and new ones are installed in their place.

Often a phenomenon called axial play occurs at the lower arm.

It is formed when the body bracket to which the lever is attached, for one reason or another, loosened and a gap appeared between it and the metal bushing of the silent block, which is why the silent block itself was able to move along the fastening bolt.

This axial play negatively affects the performance of the suspension, so it should not exist. But if it appears, then there are two ways to eliminate it.

You can try to compress the bracket. But this is very difficult to do, since it is better not to apply impact with a hammer, even through a spacer, and using clamps or a vice is not very convenient.

It is much easier to get rid of axial play using washers that are placed between the bracket and the silent block.

But according to the manual, it is recommended to replace the entire lower control arm with joints

After replacing all consumables, the removed suspension elements are installed in place.

After replacing all the silent blocks on the front suspension, the vehicle must have its wheel alignment angles adjusted.

Replacing silent blocks in the front suspension

Now let’s talk about how to replace the silent blocks of the front levers of the VAZ-2109. For this:

1. We hang up the front wheel and remove it;
2. Unscrew the fastening of the lever to the ball joint;
3. Unscrew the nut securing the stabilizer link and remove it from the lever;
4. Loosen the fastening of the lever to the body bracket and remove it from the car;
5. The silent block of the front lever of the VAZ-2109 can be removed in several ways - burn it out, knock it out or press it out with a puller or a vice;
6. We prepare the hinge seat - clean it of rust and rubber residues with a file. Afterwards, generously lubricate it with soapy water;
7. We make a small chamfer on the silent block and center it in the eye of the lever;
8. We do the pressing using a vice. We install the lever with the silent block between the jaws of the vice, align the position of the hinge relative to the hole, and then slowly tighten the vice, while periodically checking whether the hinge fits evenly.
9. After the silent block bushing rests against the jaws of the vice on both sides, remove the lever and finally seat the hinge in place;

After that, we put the lever on the car. We carry out a similar operation on the other side of the front of the car. After all work, check the tightness of the fasteners. Even if you do all the work yourself, you can complete it in 1 day.

Suspension design features

A feature of the suspension design is that many of its elements should not be rigidly connected, otherwise it will transfer all the vibration to the body.

How does the VAZ 2110 suspension work?

Therefore, some composite suspensions are connected by means of rubber bushings and rubber pads with metal bushings inside, i.e. silent blocks.

So, in the front independent suspension of the VAZ-2110 the following are connected to each other through silent blocks:

1. Lower arm;
2. Stretching;
3. Anti-roll bar.

Each of these elements plays an important role in the suspension design.

The lower arm prevents lateral movement of the wheel, the extension prevents the wheel from moving longitudinally relative to the body, and the anti-roll bar prevents the body from swaying when performing maneuvers or when driving over uneven surfaces.

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But the loads on these elements coming from the wheels are very large, so their displacement, although small, must be provided in order to partially absorb the loads and partially absorb them, and not transfer them to the body.

The possibility of displacement of suspension elements relative to each other and relative to the body, as well as partial damping of vibrations, is provided by silent blocks and rubber bushings.

On the VAZ-2110, silent blocks and bushings are installed in the front suspension:

• Lower arm (two silent blocks - through one it is attached to the body, and through the second a stretcher is connected to it);
• Stretch bar (one silent block through which it is attached to the crossbar);
• Anti-roll bar (it is connected to the lower arm through a strut with two silent blocks, and to the car body through brackets with rubber bushings).

Since the VAZ-2110 has a dependent rear suspension, so many silent blocks are not required, because it is structurally simpler.

At the rear of the entire suspension there are only two silent blocks installed - through which the rear beam is attached to the body brackets.

Important points

1. The quality of new silent blocks. This is the main point, since the left silent blocks made of bad rubber can simply tear when pressed, and not to mention how long they will work on the car. I recommend using original silent blocks produced by the BRT (Balakovorezinotekhnika) plant; in fact, they are installed on new cars. How to distinguish an original from a fake can be found on the Internet.
2. Chamfer on the lever. On one side of the lever, the hole for the silent block has a more pronounced chamfer. It is from this side that the new silent block must be pressed in.
3. Design alignment. When assembling the entire device, you need to pay attention to ensure that everything is on the same axis, without distortions, and that all holes match. In this case, everything will go smoothly and without unnecessary effort.
4. Abundant lubrication and rubber and bolt help greatly during replacement. When dry, you can even strip the threads of a bolt or nut, especially if the bolts are not made of hardened steel.

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How to make a puller

After preparing the above parts, we proceed to assembling the removable device:

1. We close one end of the cylinder with one washer, with a hole for the selected bolt.
2. We insert the bolt into a cylinder selected in diameter, slightly larger than the diameter of the silent block.
3. After putting it on the silent block, tighten the nut.

Procedure for working with the puller:

1. Remove the RMS axle. You can completely dismantle the paw and secure it in a vice, or you can press it out directly in its installed form.
2. We install the puller cylinder to the silent block.
3. Insert the bolt. We take the bolt of such length that you can throw on a couple of washers and tighten the nut.
4. We put the washers on the bolt and begin to tighten the nut.
5. Gradually the hinge will begin to slip.

If you remove silent blocks without a puller, you must use a wooden strip to avoid damaging the rods.

What is a puller for installing silent blocks?

This is what a RMSH puller looks like, which you can make yourself. In order to make it yourself, at home, you will need the following materials and tools:

• Bolt with nut. The diameter and pitch of the thread are at your discretion. If the thread is small, you will have to turn it longer, but it will work easier and smoother.
• We select a cylinder with a diameter such that the silent block fits into it.
• Washers. Some. One washer should tightly cover the cylinder hole. You can even weld the washer on one side. We take the remaining washers with a smaller diameter than the diameter of the silent block.

A RC puller is needed not only for removal, but also for installation, so as not to damage the new silent blocks. And when removing with a puller, there is no need to hit with a hammer and there is no risk of damaging the paws (levers). If you knock out rubber-metal hinges with a hammer, microcracks may appear on the lever.

On cars with 4-link suspension, the wheel alignment angles may be disrupted if the levers or new silent blocks are damaged. In this case, you will have to change the rubber-metal bushings and, possibly, the wheels again.

In terms of cost, pullers for automobile silent blocks can be purchased at prices ranging from 800 rubles to 30,000 rubles (a set of different pullers). But, it is easy to make from improvised means. The principle of operation of a mechanical puller is that when the nut is tightened, the silent block itself is squeezed out of the eye of the lever. Hydraulic ones are more complex in design, they are more powerful, but it is better to buy them when necessary; it is impossible to make them from scrap materials.

Video

This video shows how to make a silent block remover and how to work with it.

How to change silent blocks without a puller.

How to change silent blocks on the “classic” VAZ 2101, 2102, 2103, 2104, 2105, 2106, 2107.

How to make a puller for VAZ 2113, 2114, 2115.

How to make a puller for removing and installing rubber-metal hinges on Skoda Fabia, Skoda Rapid, VW Polo Sedan cars.

Description of faults and basic information

During vehicle operation, vibrations inevitably appear, which are suppressed by silent blocks. They also prevent deformation. Failure of these parts is accompanied by:

• unstable behavior of the car on the road;
• uneven tire wear;
• squeaks in the rear beam area, impacts on the body (this is especially noticeable on bad roads).

It is worth noting that the described signs are indirect. Loud knocks occur when the rear strut is faulty. In order to accurately determine the cause of the appearance of the described symptoms, it is necessary to diagnose the chassis.

It is necessary to change silent blocks if their design has defects:

• decreased elasticity of the rubber part;
• breakage of the rubber part;
• turning the element in the seat;
• bushing displacement.

If you notice that there are problems with the chassis, you should immediately drive the car into the garage, carry out diagnostics, and then subsequently replace it.

It is worth going for repairs even after the silent blocks have exhausted their service life. It’s not difficult to do it yourself.

Purchasing a new item

So, you have found out that problems with the chassis are associated with the breakdown of silent blocks.
Before starting work, you must purchase a new spare part. First of all, look at the labeling. It is important to buy an option specifically for the VAZ-2109. If you make a mistake, it will be impossible to install the silent block. The spare part must be marked: 2109-2914054. Many auto parts sellers may recommend purchasing a spare part from the “ten”, but to install it you will have to work hard to press the rubber part. There are two types of silent blocks:

1. With rubber bushings. Traditional spare part, provides softness during suspension operation. The main disadvantage is the fragility of such a spare part, especially if you often travel along sections of the road with poor asphalt surface.
2. With polyurethane inserts. More rigid, which is its main drawback. Moreover, such a spare part lasts much longer, since it is resistant to temperature changes and deformations.

Choose a silent block based on material based on your budget and preferences. Manufacturers BelMag, SEVI, SS20 and Boge have earned good reviews from experts and car enthusiasts.

What is a silent block

A silent block is a rubber-metal hinge (RMH) - an element that connects two suspension parts, in this case, a car. Consists of metal and rubber. Rubber serves to dampen vibration, smooth movement, and eliminate wear caused by metal-on-metal friction.

Silent blocks or RMS - receive and dampen axial, radial, torsion and cardan vibrations. Withstands radial vibrations up to 300 kN (kilo Newton), that is, up to 300 kg.

Classification of rubber-metal silent blocks that work in torsion:

1. with outer ring;
2. from the inside;
3. double cage;
4. eccentric.

Silent blocks of this type are installed in car suspensions so that the levers and springs can move.

Classification of RMSs that work in compression with bending:

1. supports;
2. pillows.

Hinges of this type are installed under the engine (mounts, cushions) to dampen vibration oscillations of a running and moving engine. Protects the body from vibrations.