Replacing the silent blocks of the crab VAZ 2109. What is the “Crab” fastening system?

To begin with, we will describe the location and functional purpose of the so-called “crab” on the VAZ 2114. “Crab” is the front suspension beam mounting bracket.
The resemblance to a marine arthropod is given by four mounting holes for bolts. Faulty crabs are a common problem with Lada Samara of the first and second generations. The brackets are made of a rather fragile material - silumin, so during prolonged use or increased load on the chassis they simply collapse. The destruction can be complete or partial (when one of the four fastenings comes off).

Even if one of the four sides is torn off, it is unsafe to continue to operate the car: the increased load on the bracket will lead to the threads from the remaining fasteners being subsequently torn off.

It happens that a car enthusiast notices that the fastening of the VAZ 2114 crabs has just begun to collapse - in this case, a crack appears on the bracket area. The crack can be welded, but this will be a temporary measure that will slightly extend the service life of the fastener.

If a breakdown occurs while driving, this can lead to loss of control over the car, so it is better to periodically check the integrity of the brackets of their platforms: “crabs” do not fail instantly, this is preceded by long-term wear with all visual manifestations (unless, of course, it is not This is a manufacturing defect).

IMPORTANT! The main danger of increased wear of the front suspension beam mount is that the breakdown has no “symptoms”: the driver can lose control at one moment, even if there were no prerequisites for this.

What to consider when choosing a new crab?

As stated previously, all front brace brackets are designed to be frangible to ensure the safety of more critical parts when impacted by obstacles.
At the same time, all crabs currently on the market can be divided into the following groups according to the materials from which they are made:

silumin;
magnesium-aluminum;
steel.

New crab VAZ 2114
While the first two types of crabs work on the same principle (they break apart in an accident and differ only in their weight and strength), steel crabs act somewhat differently. They are made of a powerful metal base with a welded steel strip that serves as a traction mount.

The fragile element in this case is the weld - if damaged, it bursts and the entire bracket is divided into two parts.

This design is more reliable (for example, it will not burst while tightening the bolts, which sometimes happens with low-quality crabs), but you should understand that it will “work” only with a strong impact. A collision with insufficient energy to fracture a weld may well be sufficient to damage other suspension components.

Product types

Today, the product market can be divided into several groups.

From silumin.
Aluminum-magnesium.
Steel.

The first two types are more fragile. They differ only in weight and strength . But steel ones are made from powerful metal onto which a traction mount in the form of a steel strip is welded. The design is more reliable than the above analogues in that it will not burst when the bolts are tightened. At the same time, you need to understand that if the first two simply break in half during an accident, then the steel one can withstand it, and this will lead to damage to other suspension elements.

What is a “crab” in a car and in what cases does it need to be changed?

Many car enthusiasts, when bringing their car in for maintenance, are faced with a number of professional words that they do not quite understand. Some auto mechanics try to write the most correct and literate names of components, while others use jargon. One of the words found in the vocabulary of specialists is “crab”. And this is not a well-known delicacy. Today we will talk about why it is needed in the design of a car and when the part will have to be replaced.

The correct name for the “crab” is a longitudinal brace. I could not find the exact origin of such jargon, but there are certain ideas. Apparently, auto mechanics decided to replace the awkward phrase “stretch bracket” with the simple word “crab”, taking a kind of abbreviation. So why do we need a part with such an extravagant name?

"Crabs" are found on front-wheel drive vehicles and hold the front suspension arm. They ensure proper operation of the system and do not have consumables in their design, but wear out over time. There are products made from two materials on the market: silumin (an alloy of aluminum and silicon) and steel. Silumin seems to me to be a more preferable option, since it is less susceptible to the influence of high humidity and does not create unnecessary stress on other elements.

The “crab” should be replaced with a new one in several cases. Most often it cracks and may not initially show signs of high wear. If you see defects during a visual inspection, it is recommended to replace the part with a new one as soon as possible. If the “crab” has already cracked, then an unpleasant and loud creak will appear when turning. There are often cases when a cracked element sags under load and begins to touch obstacles on the road.

The main danger posed by a broken “crab” is the possibility of deformation of the entire suspension. Sometimes the wheel literally opens at speed, which leads to serious trouble. That is why you need to treat the element responsibly and change it if necessary. In the end, I note that most often the “crab” is found on budget cars, especially domestic ones.

Cost and features of brands

Let's start with, which specializes in the production of spare parts for the national automobile industry. Products are certified. Quality standards are maintained in accordance with the standards adopted in the Russian Federation. Brackets of this brand are made by stamping and welding from sheet steel. The bushing material is polyurethane, whose safety factor is higher than that of rubber analogues. The strength of the adhesive connection virtually eliminates separation from the metal even under extreme loads. The “Sitek Profi” variety has increased body strength and rigidity of silent blocks. Estimated cost – 1250 rubles per set.

Products from Autoproduct, designed to replace standard brackets, not only improve vehicle handling, but also reduce the load on the body. They increase the rigidity of the suspension mounting points and allow you to set the caster to more than 2 degrees. Approximate price: 1750 per pair.

Under maximum loads, which means frequently occurring bumps, holes, potholes and other unevenness of the road surface, the “CS-20 DRIVE” mounts will give the motorist the opportunity to control the stability of the vehicle and the separation of the wheels from the highway.

Imported three-component poured polyurethane, including prepolymer “CS3516-B”.
Mixed compounds of polyols "CS3516-65A" and catalyst "CS3516-C".

The part is an original development for the CS-20.

Improved controllability.
Wear resistance.
The service life is several times longer than rubber analogues.

The described benefits remain at any time of the year. Temperature range: from -60 to +140 degrees Celsius. Price – 650 per unit. At the same time, the standard Tolyatti one has a range from 344 to 383. Polyurethane fasteners from the PIK company cost from 394 to 438 rubles. Sports “crabs” “Tehnomaster” will be sold to you for 1 thousand 350 rubles - a pair. Among the stated advantages are increased rigidity and improved controllability of the machine. Due to the installation of bushings of smaller diameter.

If we talk about more budget options, the reinforced Inter-auto bracket sells for 275 rubles apiece. Weight 535 grams. Dimensions 15*13*7 centimeters.

From all of the above, we can conclude that on average standard mounts cost from 275 rubles per unit. High-strength sellers estimate 650-900.

What to do if the crab breaks?

Generally, there are two main types of failure. The first is that the crab can be completely destroyed (in this case, only a replacement will help).

Second, only one bolt came off. But even here it is very difficult to restore the unit, because, as a rule, the threads on other nuts are completely torn out.

There are two options - go to a service station or do the repairs yourself. The first option is the simplest, but requires certain costs.

In the second case, you can get the job done in 15-20 minutes and save your personal budget. So why spend money? Moreover, we will look in detail at how to change the crab.

What does this threaten?

As a result of a breakdown, the wheel begins to move backwards or forwards. Further use of the car is simply impossible. If this happens far from populated areas, you can only call a tow truck. Most often, two types of breakdown occur - complete destruction or separation of one bolt, together with a nut, and the threads of the remaining two nuts are stripped. There are also two ways to deal with such a breakdown: perform the entire repair procedure yourself or seek help from a specialized automotive workshop .

The process of replacing the crabs of a VAZ 2109 car

Crab breakage often occurs in the VAZ suspension, to be more precise, in the front part of it. This is due to the fact that crabs are made from a bad metal called silumin. This is done for a reason; if there is a blow or simply an excessive load, then it is the silumin that easily breaks, but all the other parts associated with it remain intact.

Although a metal crab will withstand a load or impact, the shock will be transferred to the elements associated with it, for example, a “television” or a spacer, and as a result, you will end up with a more expensive repair.

How to tell if your crab is broken

This can be done even without lifting the car. In addition, you will hear a characteristic “crackling” sound in the front of your car. But to replace the crab, it is better to drive up to an overpass or pit. However, this can also be done on asphalt if you have a jack. Be prepared to remove the crankcase guard and bumper to get to the part.

You will also need WD-40, because most often the nuts and bolts on which the crab is attached turn sour. And even with WD it’s not always possible to unscrew them; there are situations when you have to use an angle grinder.

First we release the spacer, then all the other attachment points. When removing a broken crab, remember the places where the washers were and how many there were. Believe me, this point is very important, since the adjusting washers are responsible for the required position of the crab. The installation of the crab itself is a simple process, the only thing is do not overtighten the bolts, because, as mentioned above, silumin is a fragile thing.

Thickness is another indicator that you should pay attention to when buying a crab for your VAZ 2108 - VAZ 2109. The ideal option is the maximum thickness of the silumin crab ribs. This will increase its strength compared to the factory one, and will not damage other elements even in the event of a strong impact. Well, be careful about the strength of the cushion with the clip. The more powerful they are, the longer the part will last. Therefore, a polyurethane crab pillow is the most suitable option!

Where can I buy?

Usually the “crabs” come in a set along with the bolts that are used to attach them to your iron friend. Most often, car enthusiasts purchase them in nearby stores. Agree, waiting a week for a purchase to be delivered will bring little joy to any driver. However, if the order is ready to be delivered within 24 hours, then there is no point in traveling around the city in search of the right product, which cannot always be found on the counter. It will be enough to make a few mouse clicks to order the one you like on the Internet.

This instruction will be useful not only to owners of “fourteeners”. In fact, the entire “family”, including “eights” and “nines”, is tailored to the same “crabs”, as indicated by the markings on the packaging.

VAZ 2109 front suspension diagram

The front suspension of the VAZ 2109 is an independent element of the car, which allows each wheel to work separately from the other. This moment is a very important emphasis in driving a car. Due to this, the VAZ 2109 handles better and feels the road, allowing you to perform complex maneuvers and elements of extreme driving.

The main element of the front suspension of the VAZ 2109 is a telescopic shock absorber strut. There are racks:

Buttered ones are soft and comfortable. A good choice for bad roads. But on the highway you will be thrown around at high speed.
Gas - rigid racks. A good choice for highways, highways and roads without holes and potholes. With such struts, the car holds the road well at high speeds.
Gas-oil ones are something between the two previous racks. Usually these are the racks that are installed. as they are not too hard and soft.

The racks are equipped with coiled springs for rigidity, which also determines your comfort. The top of the strut is secured with 3 bolts along with a support bearing that allows the strut to turn with the car's wheels.

Shock absorber strut.
Rod bracket.
Traction.
Front lever.
Spherical bearing.
Rotary cam.
Front stabilizer
Stabilizer bar

The next most important mechanism in the front suspension is the steering cam. Its lower part is connected to a ball joint, which allows us to rotate our mechanism. The top of the steering cam is connected by two bolts to the bottom of the strut. The top bolt allows you to adjust the camber. A thrust bearing is attached to the rotary cam itself, on which the hub is in turn attached.

The anti-roll bar is a bar, which is attached to the car body through silent blocks using a bracket (popularly called crabs). and on the other side to the lower suspension arm.

Replacement of pads

If welding the platform does not make sense (the thread of the nut or the nut itself is broken, the bolt securing the VAZ 2109 crab is broken), then a grinder and welding will be needed here.

Tip: When starting to replace the site, be sure to close the radiator, and if welding is performed from the passenger seat, then also close the generator from sparks. There is no need to remove them; this is an additional and unnecessary waste of time and money (if the repair is carried out at a service station).

Let's move on to actions:

Attach the plate and mark the places for future cuts Using a grinder, remove the old pad, rusty metal and clean the areas around the cuts; when welding, it is important that the metal is clean. Before performing welding work, you need to remove both terminals from the battery. Weld the plate firmly. The quality of the seams is important here , it must be good, since the part operates under conditions of increased loads, so it makes sense to entrust this work to an experienced welder

The bracket is screwed to the overcooked platform, although the quality of the seams leaves much to be desired, and they were clearly too lazy to clean them

To prevent your car from looking like in the photo, after completing the welding work, you should clean the seams and, to increase protection against rust, coat the surfaces with anti-rust (for example, Tamak) and cover with primer
Attach the stretcher (if you removed it), screw the bracket into place, tightening each bolt of the VAZ 2109 crab (again, carefully, do not break the bolts) Then attach the bumper (see Removing the front bumper of the VAZ) and the lower protection
In the future, when operating the car, it is recommended to check the brackets after each strong impact.
It is recommended not to drive with a broken (split, cracked) “crab” unless absolutely necessary (this is dangerous for the health and life of people around you and for you too). Faulty (damaged, cracked) “crabs” discovered in time should certainly be replaced with new ones as soon as possible
This measure will help save your money, as well as your health and life. Replacing the brackets is complete, everything is simple and completely doable on your own.

Also check out

You can begin installing new front suspension silent blocks. You need to treat the seat with soapy water and press it into the hole with a screwdriver (if you lubricate the hole with undiluted liquid soap, the resistance will also decrease). When everything is ready, you can start replacing the front suspension silent blocks with new ones.

After the silent block enters 50%, remove the tube and press everything to the end. There is no need to rush so that the part is not installed crookedly. You can add soap to make the process easier.

Check the protrusions of the silent block on all sides (should look like in the photo).

Replace the silent block of the "daisy" lever. The old ones need to be cut down with a chisel, and new ones installed in this place. Using a vice, press them into the mounting hole. Finish with a hammer and a pointer.

Reassemble everything in reverse order.
The actions on the other side are similar.
You need to tighten the nuts when the car is already on the ground.

Worth checking out:

Replacing a crab on a VAZ 2115 with your own hands - step-by-step instructions

Crab – bracket securing the car suspension brace

A common problem with “nines” is the destruction of the bracket that secures the front suspension brace of the car, which is located under the front bumper. Replacement of the VAZ 2109 crab is necessary in case of its destruction, in case of accidental bumping into a high stone or curb, as well as cracks due to “fatigue” of the metal.

It is made of a rather fragile aluminum alloy silumin, which is easily destroyed upon impact. When the “crab” is destroyed, it is necessary to replace the VAZ 2109 crab, since the front end of the lever loses its fastening, hangs freely in the air, and no longer holds the front wheel of the car in the desired position.

A fairly common “sore” of many models of the VAZ family is a faulty or damaged front suspension extension fastener, or in common parlance, a “crab”. The crab holds the front suspension brace located under the front bumper.

Often, the destruction or malfunction of the crab occurs due to the fragility of the product itself, which is made of silumin or another aluminum-based alloy. The crab usually crashes on high rocks, a curb, or other elevation that the driver did not notice.

The question of why it was necessary to make a power part from such a fragile metal worries many “victims”. The answer is actually quite simple. With its fragility and rapid destruction in the event of an impact, the crab saves more important and expensive parts such as a “TV” or a spacer.

A broken or cracked crab is a pretty big problem if you find yourself far from home and a service station. The fact is that in the event of complete destruction, you most likely will not be able to get home even at a very low speed. Due to the fact that the front end of the lever remains unattached and simply hangs in the air, the wheel becomes uncontrollable and begins to move either backwards or forwards. As you understand, in this case the only way to get home is by carriage.

It should be noted that a malfunction of the crab does not always manifest itself in the form of a completely immobilized car; it often happens that the fastener itself is absolutely intact, while knocking noises are heard while driving over uneven surfaces. It’s quite simple to check whether it’s a crab; you just need to drive into a “pit” or lift the car on a lift. The presence of play indicates wear in the fastener and requires immediate intervention and replacement of the faulty crab.

In this article you will learn how to replace a crab on a VAZ 2115 at home if it malfunctions. The work is simple and does not require special skills or tools, the main thing is to follow the sequence of actions.

Note! When replacing crabs or just one crab, be sure to stock up on new bolts, because the old ones can be deformed and have cracks, and the heads on the bolts can also be torn off (And these bolts constantly turn sour and unscrewing them can be so problematic, because which is why heads are mostly torn off)!

Removal: 1. First, lift the front part of the car on a jack and secure it well by placing blocks of wood under the sides of the car and, for better stability, put something under the levers, just in case (In general, you will need to hang the front part and secure it well, with whatever you can), then slightly loosen the nut that secures the guy wire to the crab (Indicated by a blue arrow) and proceed to unscrew the three bolts securing the crab to the platform (Indicated by red arrows), and when the bolts are unscrewed, carefully lower the crab, completely unscrew the nut securing the guy wire and take it out and leave the stretch, let it hang.

Note! Spacer washers will be installed under each bolt; they will need to be installed in exactly the same places, in the same quantity and exactly as they were, so when you turn out the bolts, carefully remove these washers and remember their location under the bolts !

Do-it-yourself replacement of silent blocks on a VAZ 21099

Today we will talk about replacing silent blocks on a VAZ 21099 with our own hands. Replacing silent blocks is a more complex job related to the chassis. However, if everything is done correctly (according to the instructions), problems and difficulties should not arise. To make it clearer, I am attaching informative photos and a description of the steps to replace the VAZ 21099 silent blocks.

What tool is needed for replacement:

- Vise. – New VAZ 2109 silent blocks. – Soapy water (detergent or liquid soap). – Gas burner or other fire source. – A piece of pipe of such diameter that the silent block fits freely into it. - A set of keys. - Chisel and hammer. – WD-40.

I recommend carrying out repairs on an inspection pit or a lift.
Replacing silent blocks on a VAZ 21099
1. Unscrew the lower arm. To do this, unscrew using a socket with an extension: the extension nut, the nut attaching to the body, as well as the stabilizer link and two ball joint bolts. It will take a lot of effort to remove stuck and rusted nuts; if that doesn’t work, use WD-400 or heat the connection.

If the extension nut does not unscrew even after all the methods suggested above, unscrew the crab, then clamp it in a vice and try again.

2. Next, clamp the removed lever in a vice and, using a lamp or torch, try to burn the old silent block out of the seat. If this method does not suit you, then you will have to press out the silent block using a special puller or the same vice, but using fire it is easier and faster to do this.

3. After the silent block has burned out a little, remove it with a screwdriver or chisel; it should come out easily.

4. Now you have a place ready for installing a new silent block, which must be thoroughly blown and cleaned of dirt, dust and rust before installation.

5. When everything is ready, you can begin replacing the front suspension silent blocks with new ones. To do this, you will need soapy water, thoroughly treat the seat with a soapy solution, then install a new silent block as shown in the photo and lightly, using a screwdriver, begin to press it into the hole. You can also apply undiluted liquid soap directly into the hole, then the resistance will be much less. It may not work out the first time, but don’t rush to despair, look at what is “not letting in” and where, tuck it in using a spatula, add soap and get to work again.

6. When the silent block goes in halfway, remove the pipe and press everything to the end. Be careful, do not rush, so as not to “bite” the rubber silent block, or install it awry. Don't forget about soap, add more of it.

7. When you have pushed it to the limit, check whether the silent block protrudes equally on each side. Your result should look something like what is shown in the photo.

8. Now it’s time to replace the silent block of the “daisy” lever. Everything is much simpler here, cut off the old ones using a chisel, and then install the new ones in place. Using the same vice, press them into the mounting hole. Finish using milk and setting.

9. When the lever is ready, you can begin assembly.

10. On the other hand, everything is done in the same way.

11. Do the final tightening of the nuts when the car is “on the ground”.

Independent replacement of VAZ 21099 silent blocks was successfully completed. Let us remind you that the last publication on our website was about replacing the idle air control valve VAZ 21099.

How to replace a crab on a VAZ 2115 with your own hands - step-by-step instructions

We drive into the pit, put the car on the handbrake, install wheel chocks, and jack up the front end.

We dismantle the protection and remove the front bumper.

Using a “24” wrench, unscrew the rod nut.

After this, you need to unscrew the three bolts securing the crab to the platform and remove it.

We install the new crab in place and fasten it with bolts.

Further assembly is performed in reverse order. Before tightening, we lubricate the fastening bolts with graphite or, in extreme cases, with polish, this will make your life easier in the future.

That's all I wanted to say! As you can see, there is nothing difficult in this work. Now you know what a crab is, why it breaks and how to replace it if it malfunctions

Thank you for your attention and see you again at VAZ Repair

Today, such a mechanism can only be found in cars of several brands. Quite often, various situations happen with VAZ 2115 cars, resulting in deformation or breakage of the element. Experienced professionals who repeatedly deal with the repair of these car brands recommend that owners treat the car with care so as not to damage the specialized bracket. However, given the state of our roads, this is quite difficult to do.

Emergency situations and their solutions

Quite often, quite experienced owners of a VAZ 2115 car install a “crab” made of titanium alloys. This solution is highly durable and guarantees a high level of safety at various speeds under conditions of high loads. If damage or cracks occur, it is recommended to move slowly or call a tow truck to deliver the vehicle to a service center.

If the crab is completely torn off, it is necessary to call a tow truck and go directly to the service station so that experienced professionals can weld or completely replace such a spare part. An important condition for operating a vehicle in various situations is the level of damage that determines the ability of the vehicle to move independently.

Features of performing repairs and self-replacement of the crab on a VAZ 2115

In order to begin independently replacing this part or repairing it, you must have the following tools and materials:

Standard set of sockets or spanners;
Specialized liquid VD-40;
A reinforced pipe, which may become necessary if the fasteners, that is, the bolts on the bracket, are too oxidized.

If the owner wants to carry out independent repairs, then it is necessary to have a specialized welding machine and some experience in using such a unit.

Step-by-step instruction

Experienced service center professionals have created successive steps that will help the owner of a VAZ 2115 independently replace the “crab”:

place the vehicle on the pit;
turn on the handbrake;
install wheel chocks;
use a jack to raise the front of the car;
dismantle the protection;
remove the front bumper;
unscrew the rod nut;

unscrew several mounting bolts;

dismantle the mechanism;
install a new element (or a restored old one);
tighten the bolts;

carry out installation according to the previous principle, but in reverse order.

Recommendations from experts

It is recommended: before finally securing the bracket bolts, they must be lubricated with a specialized product so that they do not oxidize, and in the future this part can be replaced without any problems.

It is important to note that a faulty bracket may not always completely immobilize the vehicle. Thus, if any errors are observed in the functioning of this mechanism, it is important to carry out independent diagnostics or contact experienced specialists

During the operation of the car, play appears repeatedly, which indicates negative changes that have occurred with the bracket

In such a situation, it is important to inspect the vehicle and, if necessary, replace the faulty mechanism

Tools and materials

Tools you will need:

Spanners (take a full set at once);
Socket wrenches;
Vise;
Chisel;
Hammer;
Puller;
Silent blocks.

There are several important nuances:

to take silent blocks from repair kits intended for models 2108-2112 . You will simply waste your money because they are not suitable for the fourteenth VAZ model.

The easiest way to purchase a puller is at auto parts stores. But you can ask your friends for it.

You can make a device for pressing in a new silent block yourself. To do this you will need a 170mm M12 bolt, a bushing, a washer and a high nut. But if you have the opportunity to use a full-fledged, real tool, do just that.

Crabs, stretch marks, levers!

If I remember correctly, I remembered the spar!

the spar, if my memory serves me correctly, is part of the body. its hard basis, so to speak. this can only be changed by “cutting” - “welding”

I’ll explain: a crab is a crab, forgive me what it’s called in the catalog

You can install a subframe to accommodate it.

There is a rule on the forum that you use a photo of your car as an avatar. Therefore, I ask you: change your avatar.

(if for some reason you cannot make your car as an avatar, you can contact the moderators or leave this field empty)

Cross member with crabs Clubturbo, VAZ 2108

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Stretch bracket assembly (crab) for VAZ 2108

Manufacturer: Chance Plus
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Dear customers, in order to avoid mistakes when sending the brace bracket, in the “Comment” line, indicate which side you need (driver or passenger), and the model of your car.

The tension bracket assembly is made by casting from high-strength aluminum, of a complex configuration with stiffening ribs that increase fracture resistance. A rubber-metal hinge, cast from rubber with high strength properties, is pressed into the body. The bracket is mounted on a brace for attachment to the body panel. This unit prevents damage to the lower control arm. This is done so that upon impact it is not the lever that suffers, but this unit.

The right and left sides always look IN the direction of the car (moving forward) and in no other way, the driver’s side is on the left, and the passenger’s is on the right.

If, after replacing the extension, the car begins to pull to the side when driving, contact a specialized workshop to diagnose the front suspension, being sure to inform the repairman that the extension was changed.

What influences price formation?

The cost of the “crab,” like any other component, depends on the cost of its production and the markup set by the seller. However, the costs of each enterprise, car dealership or online resource are calculated differently. Based on this, even identical fasteners do not have a fixed cost. For example, a set of “crabs” of the “Sevi Expert” brand can cost either 587 or 924 rubles. Intermediate options range around 650 rubles. Then everything depends on the availability of goods in the warehouse and delivery time.

It is no secret that the final amount in the check is influenced by the manufacturing technology of spare parts. Catalogs are full of names of various manufacturing companies. Each, in pursuit of a client, tries to maintain the ratio of price and quality.

Clutch Lada Kalina

The exhaust system caused trouble. By the sixth ten thousand, the muffler pipe broke off - as smooth as a knife, it was cut off close to the bracket. There are high vibration loads here, the pipe is weakened by corrosion - where else can it break? As soon as the pipe was replaced, the resonator leaked. And while changing it, they found a more serious malfunction: the honeycomb filling of the converter dangles and rattles in the body of the catalytic manifold. It is natural to assume that it has already been partially destroyed - and this promises new adventures. However, the test showed that the “aging coefficient” of the neutralizer is still half the critical value, and toxicity is normal. And we reasoned: the car is Euro III, which means we’ll wait until the self-diagnosis turns on the warning light, then we’ll think about replacing it.

Let's get started

The brace bracket began to be called a “crab” because of the four existing holes for bolts, giving it some resemblance to a claw. You can determine if the crab is broken by the characteristic “crackling” sound that appears in the front of your car. You can look at its condition and determine the scale of destruction without even lifting the car. We choose the first solution - replacing the crabs with a VAZ 2109 yourself, it is much cheaper and does not present any particular difficulties:

First, we purchase a new crab and a set of bolts for it; on old ones, the threads may be torn off
First, we roll the car onto a pit or overpass
Then you need to put the car on the “handbrake” (parking brake) and support the rear wheels with “shoes” (or wooden blocks to prevent it from rolling away)
Raise the front of the car with a jack
Remove the bottom protection and bumper
During work, you need to remove the stretcher, if you don’t remove it, then you need to make sure that it does not interfere with you

Bolts securing the crab to the platform

First, unscrew the remaining mounting bolts, if they did not come out of the “crab” when the car hit
Remove the spacer washers one by one
We recommend that you immediately count the number of washers removed from each hole and remember the order in which they were installed
When screwing on the new “crab”, first do not forget to put all the removed adjusting washers in their places; install the washers in the reverse order
Then we screw in the bolts of the crab VAZ 2109, securing the brace bracket in place
We tighten them with force, but without fanaticism, so as not to tear them off
This completes the replacement of the crab for the VAZ 2109, but it doesn’t always turn out to get off so easy
It happens that the platform breaks along with the stretching bracket

We buy spare parts

When, after unscrewing the bracket, you discover that a crack has formed on the platform, do not rush to replace the platform; the crack can be welded. Sometimes, however, it becomes necessary to replace not only the bracket, the bolts on the VAZ 2109 crab and the platform to which it was attached were also damaged (and it happens that both platforms or both brackets, left and right):

Then in the car store we purchase a reinforced plate to which nuts are welded to attach the “crab”. When choosing, you should pay special attention to the quality of the welded nuts, since your safety when driving the car depends on this. If there is no particular choice, and the nuts were welded to the same bar welding point (well, or two), then you need to independently weld all the nuts in a circle, in order to strengthen their fastening with the plate. Definitely buy new bolts for the VAZ 2109 crabs, so that microcracks or other defects do not surface later. When choosing rod brackets, you should carefully choose not only the material from which it is made, but do not forget about the thickness. The best option for installation would be a bracket made of silumin, which has a maximum thickness of ribs. Since it is stronger than the factory one, however, will it damage the “TV” spacer in case of a strong impact? A cast iron bracket is stronger than a silumin , however, cast iron is also fragile and cracks when impacted, and besides, it can damage the spacer and the “TV”; the instructions don’t decide this issue for you. It’s worth paying special attention to the strength of the rubber cushion and its clip - the more powerful they are, the longer they will last will work out the detail We recommend choosing a crab that has a polyurethane cushion. Do not take an inexpensive one (the low price is alarming), or without packaging, we remind you of possible fakes! And don’t forget that there are right-handed and left-handed brackets and platforms; when replacing, this is of great importance

We buy spare parts

When, having unscrewed the bracket, you discover that a crack has formed on the platform, do not rush to replace the platform, the crack can be welded. Sometimes, however, it becomes necessary to replace not only the bracket, the bolts on the crab VAZ 2109 and the platform to which it was attached also suffered ( and it happens that both platforms or both brackets, left and right):

Then in the car store we purchase a reinforced plate to which nuts are welded to attach the “crab”
When choosing, special attention should be paid to the quality of the welded nuts, since your safety when driving your car depends on this.
If there is no particular choice, and the nuts were welded to the plate with one welding point (or two), then you need to independently weld all the nuts in a circle in order to strengthen their fastening to the plate
Be sure to purchase new bolts for the VAZ 2109 crabs so that microcracks or other defects do not surface later
When choosing traction brackets, you should carefully choose not only the material from which it is made, but do not forget about the thickness
The best option for installation would be a silumin bracket with maximum rib thickness
Since it is stronger than the factory one, however, it will not damage the “TV” or the spacer during a strong impact
The cast iron bracket is stronger than the silumin one, however, cast iron is also fragile and cracks when impacted, and besides, it can damage the spacer and the “TV”; the instructions do not solve this issue for you
It is worth paying special attention to the strength of the rubber cushion and its clip - the more powerful they are, the longer the part will work
We recommend choosing a crab that has a polyurethane cushion
You should not take an inexpensive one (the low price is alarming), or without packaging, we remind you about possible counterfeits!
And don’t forget that there are right-handed and left-handed brackets and platforms; when replacing, this is of great importance

New warning triangle: installation requirements

Today we have a new addition to the homemade car section: replacing the crab mount for a VAZ 2108-99 with your own hands.

Good day to all. Recently someone came to me with a “problem” - they couldn’t tighten the bolts to secure the crab. A quick inspection yielded the result: the fastening in the body had rotted and, as a result, the nuts into which the bolts were screwed had fallen off.

In the photo I have cut out a fragment of the body, on which the places for the nuts are clearly visible. It was cut out using a grinder. Stores sell ready-made products that just need to be welded in place of the old one) But we are not interested in it)) After all, we are homemade. Therefore, a piece of corrugated sheet metal measuring 20 cm by 100 cm was purchased at a metal warehouse. Its thickness was 3.5 mm, which is quite enough for our needs. I cut a piece from the sheet a little larger than our old mount. I don’t mention the dimensions of the parts, because... it was all done locally or according to a template.

Using a grinder, I adjusted the dimensions to the required size, i.e. at the location of our cutout.

Having placed the crab on the lever and attached it to the plate, I immediately marked the locations for the holes. Having drilled holes with an 8 mm drill, I got such a product.

Taking a crab and bolts with nuts, we assemble it all on the knee and get a product in which the nuts are scalded. Assembly on the elbow is necessary so that later during installation there will be no problems with bolts getting into the threads.

We screw the crab into place and adjust the product immediately into place, while making potholders.

After grabbing the product in place, unscrew the bolts, remove the crab and scald it with a continuous seam along the cut lines.

Unfortunately, the quality of my seam left much to be desired. I cooked it semi-automatically, but practically didn’t use it (I don’t know how)… But, judging by the seam, it turned out quite strong. Moreover, the reinforcement of the load-bearing lower part of the radiator frame and, accordingly, the mounting of the crabs are made from the same corrugation. This reinforcement was made by trying it on on site and cutting it with a grinder.

The photo shows a cut in the sheet. It is needed to bend the part.

All this was bent with the help of a hammer and some mother... The cut line needs to be welded for strength. Having applied the product, we get a completely acceptable result. All that remains is to drill the holes for the crabs and weld them.

Unfortunately, I can’t post a photo of the finished result, because... For some reason, another person will complete the work. And so everything should turn out strong and reliable.

Crab on VAZ 2114: operation and replacement

Very often, on cars produced by AvtoVAZ, a malfunction occurs such as a breakdown or even complete destruction of the front suspension brace fastening. The crab on the VAZ 2114 is no exception (this is what many drivers call this fastener). The main reason for such frequent breakdowns is the material from which the crab is made, namely various aluminum alloys (like silumin).

If, while driving, a car touches high protruding elements - stones or bricks, with its brace fastening, then in most cases this leads to the destruction of the latter.

It would seem, why did the designers choose this particular material, since crab 2114 could have been made of steel? The answer here is quite simple - this element is made fragile specifically in order to save other, more important and expensive elements of the car suspension when it collapses.

Is it possible to drive with a faulty crab?

In most cases, driving with a faulty brace fastening is impossible. This is caused by the fact that the wheel on the damaged side becomes simply uncontrollable, and movement even at a minimum speed turns out to be extremely difficult.

If the crab is completely broken, you should stop driving the car until it is repaired, and if the breakdown occurs far from home, then call a tow truck.

Cracked crab VAZ 2114

Sometimes a slightly different situation happens - it seems that the mount is not damaged, and the car is driven normally, but at the same time a knocking sound is periodically heard from one of the wheels (especially clearly when going over uneven surfaces).

This may be caused by the fact that the fit of the fasteners on the crab itself has worn out (due to the fact that it is made of fragile material) and backlashes have appeared.

This is very easy to check - you just need to put the car on an overpass or hang it on jacks, and then inspect the mount. If it turns out that backlashes have indeed appeared, then the crab should be immediately replaced with a new one.

Driving a car with a worn-out crab that has strong play can lead to its spontaneous destruction even without colliding with an obstacle (which is extremely dangerous, as it can happen when driving at high speed).

How to replace the crab with a new one?

If signs of wear or damage are detected, it may be necessary to replace the crab with a VAZ 2114. This is quite simple to do and can be done by every car enthusiast.

The only thing you will need is the presence of an inspection hole or overpass and a minimum set of tools:

jacks;
shoes;
flat screwdriver;
set of heads with ratchet;
24mm wrench.

Replacing the crab VAZ 2114

The entire replacement procedure is performed in the following order:

We install the car in the pit.
We install the shoes under the rear wheels.
We hang the front on jacks.
We dismantle the protection and front bumper.
Take a 24mm wrench and unscrew the rod nut.
Unscrew the 3 bolts securing the crab.
We remove the destroyed crab.

Dismantling the crab VAZ 2114

After this, we take a new bracket and mount the VAZ 2114 crab in exactly the same sequence, but in reverse order. As you can see, everything is quite simple and does not require much time. If necessary, the entire replacement procedure can be performed even on the road (provided there is a suitable place for this).

Is it possible to drive with a faulty crab?

If the crab is completely broken, you should stop driving the car until it is repaired, and if the breakdown occurs far from home, then call a tow truck.

This may be caused by the fact that the fit of the fasteners on the crab itself has worn out (due to the fact that it is made of fragile material) and backlashes have appeared.