✅ How to replace the suspension bearing on a VAZ 2106

Replacing the suspension bearing on a VAZ-2106, 2107

The driveshaft is one of the main elements of all-wheel drive and rear-wheel drive vehicles. Its main purpose is to transmit rotation from the vehicle’s gearbox to the rear axle gearbox. It is thanks to this connecting link that the machine is set in motion. But for greater reliability, the cardan must rotate in one plane, be suspended and firmly held in place. In this case, the main task of fixation is taken on by the suspension bearing.

Features and signs of replacement

The service life of an outboard bearing largely depends on the conditions in which the vehicle is operated. Frequent trips on our roads and in off-road conditions primarily break the rubber band. But you can recognize the problem in a timely manner. To do this, you need to pay attention to the following symptoms:

— strong impacts are heard on the bottom during a sharp start from first speed;

— strong vibration appears while the car is moving;

- There is a strong hum when driving at high speed.

If at least one of the symptoms appears, we can talk about the need to replace the outboard bearing. You cannot delay this work. Otherwise, the driveshaft becomes completely uncontrollable, which can lead to damage to the gearbox and serious failure of the driveshaft.

Features of replacing the suspension bearing on a VAZ-2106, 2107

When you first suspect that the outboard bearing is failing, be sure to conduct a visual inspection of the unit. If there is obvious damage, play or knocking, replacement is necessary. The main thing here is to take your time. Your task is to buy a reliable and, most importantly, high-quality replacement. It is better to give preference to original parts that will serve you for some time.

Before making a replacement, be sure to ensure that the remaining components are in good working order - the crosspiece and the elastic coupling. Otherwise, while working, you will have to be distracted and buy additional equipment. Consider one more important point. If you are doing this kind of work for the first time, then it is better to buy a spare cross. This recommendation is easy to explain. To replace the outboard bearing, you will definitely have to remove the crosspiece, and without some experience it can easily be damaged or any of the parts lost.

Before starting work, be sure to make marks with a chisel or paint on all connecting parts of the cardan. In this case, you will not have to carry out additional balancing after assembling the structure. If you assemble the unit incorrectly, then increased noise during movement and vibration will bother you for a long time.

So, the work consists of several stages:

Stage one - dismantling the cardan. For this:

— drive the car into the inspection hole (you can work on an overpass) and fix its position with the help of shoes;

— remove the spring tensioning the handbrake cable;

— place symbols (“flags”) at the junction of the flange and cardan (we have already mentioned the importance of this work above);

- tighten four nuts (a wrench of “13” will do). Please note that the cardan will rotate, so it is better to fix it with a screwdriver;

— remove one edge of the propeller shaft and lower it down a little;

— make a mark fixing the position of the coupling and flange;

— unbend four special “antennae” designed for fixation (they are located on the seal holder);

— move the cage (it will go along with the seal) towards the driveshaft;

— remove the safety bar (this can be done with a key set to “13”);

— support the propeller shaft, unscrew the two nuts and remove the outboard bearing plate (it is fixed on the body);

— pull the cardan shaft out of the coupling.

Stage two - removing the cross:

- as in the previous case, make marks at the junctions of the nodes, mark the relative position of the forks and shafts so as not to confuse anything;

— remove the retaining rings;

— place a special puller on the crosspiece and squeeze out the needle bearing. Please note that the bearing will not come out completely, but only 20-30% of its height;

- squeeze out the next one in a similar way;

- knock both bearings out of the fork;

— separate the fork and the cross.

Stage three - replacing the outboard bearing:

— unscrew the nut on the cardan fork (a key with a “27” will do);

— place the puller on the fork and screw the bolt in a little to create the proper tension. If the fork still does not give in, you can work a little with a hammer (without fanaticism). So, step by step, push the fork out of the slots;

— twist the mounting bolts securing the outboard bearing;

- press the knot against the corners. Next, using a special spacer and a hammer, knock the bearing out of its place;

- replace and put everything back in reverse order.

Stage four - collecting the cross:

— place the puller in another place and squeeze out the second pair of bearings;

— install seals and plugs;

— treat the crosspiece bearing with lubricant (it is advisable to use Fiol);

- insert the cross into place;

- press the bearing into the fork to such an extent that you can install the retaining ring;

- install the “lock”. Now turn the cross over and perform a similar manipulation with the second bearing. In this case, the first bearing should rest tightly against its restrictive ring. If you did everything correctly, you can easily put on the fixing ring on the other side. If problems arise, you can help the “fixer” with a hammer (again, don’t be too zealous);

— measure the distance between the bearing and the retaining ring. Normal – 10-40 microns;

— lubricate the splines (you can use CV joint-4 or Fiol-2U);

— install everything in place, bend the locking “tendrils”.

Conclusion

Replacing the outboard bearing will not cause you any difficulties. The main thing is to approach the work carefully, purchase high-quality parts and prepare the tools in advance. Good luck.

How is a bearing replaced?

VAZ “5-ka”, “6-ka” and “7-ka” have a similar chassis structure, therefore the rules for installing and replacing bearings apply to all of the listed models.

First, you need to put the vehicle on the inspection hole and remove the cardan shaft, and at the same time dismantle the crosspiece (thanks to the 27 key, the bolt is unscrewed). Do not forget that the nut does not need to be completely removed - you need to leave a little space directly on the thread in order to later press out the plug.

After this you will need a puller. It can be of different devices - when selecting this part, you must ask the dealer about the specific model of vehicle it is intended for. Thanks to the puller, the cardan shaft fork is pressed into place. It is quite possible that such a part may jam and not come out. A hammer is used for this. There is no need to knock too hard, otherwise both the fork and the puller will become faulty. After this, the required part is pressed out, and the support plate is removed.

Next, the bearing is directly pressed from the shaft. To do this, you need to find two corners (50x 50) and with their help, simultaneously with support on the cardan, press out the spare part that is worn out. If necessary, you can take a steel extension and easily hit it with a hammer. That's it, the bearing is removed.

After removing the suspension cardan bearing, you need to remove the retaining ring and mud washers. Now you can begin installing the new replacement part.

Installation is done in a similar way. But here you need to take into account one feature - for a quality replacement it is necessary to lubricate the new part. Otherwise, an extraneous sound will appear after replacing the cardan outboard bearing. Usually, manufacturers lubricate the part in advance, but this is not quite enough to prevent sound from appearing after changing the cardan outboard bearing. To ensure the car has good rotational movement of the propeller shaft, it is necessary to carefully pry off the bearing cap (wall) using an awl and process it. After this, the new part is ready for installation. If it is noticed that this spare part rotates with hooks, then it needs to be replaced with another one, since the part is either defective or counterfeit.

By following these instructions, the car owner can easily replace a worn-out spare part with a new one, guaranteeing long-term and uninterrupted operation of his own car.

One of the structural elements of the propeller shaft is the suspension bearing. It performs the function of maintaining a cardan transmission consisting of two or more parts. The driveshaft support consists of a metal housing with holes for mounting to the frame, a ball bearing and a damper rubber to compensate for minor vibration.

Like any part of a vehicle, the universal joint support can become unusable. Often, when a support bearing fails, adjacent parts become unusable. Therefore, if the outboard wears out, we recommend contacting our specialists, who will carry out diagnostics and identify all the faults that could be caused by its breakdown.

Signs of a faulty VAZ 2107 suspension bearing and how to check the driveshaft yourself

The first signs of malfunction and wear of the VAZ 2107 (PP) suspension bearing are vibration and knocking of the cardan when the car begins to move. After accelerating the car, the knocking gradually disappears, turning into vibration and noise. If there were no problems with balancing the axle before, but knocking suddenly appeared, then it is necessary to immediately diagnose the PP.

Diagnosis is performed in the following order:

Place the car on an overpass, lift or pit;
Locate the driveshaft under the car;

Check the play of the PP by moving the part by hand in the axial direction - free movement is not allowed;
Rotate the cardan and listen to how the bearing works - vibration, rolling, grinding, knocking are not allowed;
Inspect the product body, including the tightness of the bearing seals - lubricant leakage is not allowed;
Make sure that the outboard bearing and bracket are not loose;
The presented videos show how the VAZ 2101-2107 suspension bearing (injector) hums, as well as how to determine if the intermediate support is faulty.

Video: “How an outboard bearing hums”

Video: “How to check the universal joint support”

How to Determine a Bad Outboard Bearing

A driveshaft bearing failure is identified by a characteristic rustling sound. A serviceable bearing makes virtually no noise when rotating, rotates effortlessly, smoothly and without jamming.

What happens if you continue to drive with a faulty driveshaft?

Malfunctions are usually manifested by vibrations and knocking in the cabin. Typically, a malfunction is detected by loose fastenings of parts; damage to the pipe causes an imbalance of the driveshaft. Knocking and beating in the cardan transmission begins due to an increase in the clearance gaps between the crosspiece and the spline bearings.

Driving with a faulty driveshaft is not advisable, as a broken shaft on a car with an open driveshaft can lead to an emergency.

The serviceability of the cardan transmission is checked while the vehicle is moving.

Typical driveshaft failures:

1. Severe wear of bearings and cardan crosspieces.

2. Wear of spline joints.

3. Disrepair of cardan shafts (dents or cracks in pipes).

4. Loosening the fastenings of flange parts and cardan forks.

5. Lack and leakage of lubricant due to wear of the seals.

Having felt a breakdown in the cardan drive on the road, the driver must carefully stop, check and, if necessary, tighten the bolts securing the flanges and forks, supports, and bearing caps.

Disassembling the cardan transmission on the road is undesirable; there is a percentage chance of disturbing the dynamic balancing of the shaft. The shafts are balanced at the factory using special balanced plates on specialized equipment. It is very easy to disturb the balancing, and it will quickly lead to beating and vibration of the cardan shaft, thereby causing severe wear of the cardan parts.

Do not try to fix problems with the cardan transmission on the road; unauthorized repairs and the wrong approach to the matter can ruin the cardan. Even garage repairs are not advisable if the person carrying out the repairs is not aware of all the intricacies of the process.

Driveshaft malfunctions usually rarely occur if the driver drives carefully and properly maintains the car.

The cardan, like all mechanisms, requires periodic tightening of fasteners, tightening of bolts and lubrication, even a slight loosening of the fastenings of parts, a small play in the hinges can cause a number of problems such as; beating, vibration, hum of the driveshaft. Wear of spline joint bearings occurs due to damaged cork seals.

Suspended bearing for the VAZ 2107 propeller shaft: dimensions, prices, how to choose, which one to buy

The design of the intermediate support for the propeller shaft VAZ 2101 - VAZ 2107 consists of a closed-type, lubricated, single-row radial ball bearing, which is located inside a housing made of metal and rubber. The ball bearing is secured with a retaining ring. The PCB body has fasteners in the form of a bracket with holes.

according to GOST 6-180605;
according to ISO 62305.2RS;
Factory (serial or catalog) number of the VAZ 2107 suspension support: 2105-2202078.

The VAZ 2107 suspension bearing for replacement, the prices of which are presented in the table , is selected based on the recommendations of experienced auto mechanics and service station workers.

Below is a list of preferred manufacturers to purchase parts from. To the question “How much does a suspension bearing for a VAZ 2107 cost?” This table will answer in detail. Pay attention to the photographs of the original repair kits presented in the list.

Replacing the suspension bearing and universal joint in VAZ cars

Despite the abundance of foreign-made cars, a considerable number of car enthusiasts are owners of the familiar Zhiguli cars. One can argue for a long time about the positive and negative qualities of this brand, but many will unite in matters of repair - this is not the most difficult process, but it also requires skill. Let's take a closer look at all the intricacies of repairing the driveshaft crosspiece, as well as the outboard bearing for VAZ-2101, VAZ-2102, VAZ-2104, VAZ-2105, VAZ-2106, VAZ-2107.

Purchasing spare parts that will be used during repairs is a very important point. For an outboard bearing that you plan to purchase, an important factor will be the smoothness of its movement, as well as the degree of elasticity of the rubber. Various failures and “clinging” when checking its operation only indicate that it is better to put such a bearing aside - it will not work. The rubber used in the suspension bearing must be sufficiently elastic and soft. If it is very rigid, then by installing a driveshaft with such an outboard bearing, the driver will encounter body vibration when driving. This is caused by the transmission of vibration from the driveshaft. In addition, such tires will require replacement very quickly. It is best to purchase a VAZ crosspiece from the manufacturer. It is also important to buy retaining rings, since old ones can very quickly break or become damaged, which will require repairs to be carried out again.

As for the set of tools that need to be used when repairing the driveshaft crosspiece on a VAZ-2101, VAZ-2102, VAZ-2104, VAZ-2105, VAZ-2106, VAZ-2107, it includes:

open-end wrenches (for 12 and 13)

· socket wrench (13 and 27)

· aluminum (or copper, if necessary) hammer attachment

In the event that it is necessary to replace the driveshaft outboard bearing, a shrink puller and the old flexible coupling flange are added to the tool kit.

Initially, you should understand that bearing replacement is best done on an overpass, or in a garage above a pit. In the latter case, for greater simplicity and convenience in unscrewing the nuts attached to the rear axle shank, one wheel is lifted using a jack.

The first point is to remove the VAZ driveshaft. To do this, use a 13mm wrench to unscrew 2 bolts that secure the suspension bearing to the transverse support. Then unscrew the nuts securing the propeller shaft to the rear axle shank. It is best to change the mounting locations. Often these fastening nuts are too difficult to unscrew and are cut with a chisel. Therefore, it is better to initially stock up on a set of nuts to replace broken ones.

How to check the outboard bearing of a VAZ 2106. How to replace the outboard propeller shaft bearing

The driveshaft plays a major role in all rear-wheel drive vehicles. Its functions include transmitting torque from the gearbox to the rear axle gearbox, which distributes it along the axle shafts. Such a mechanism also requires close attention, so in this article we will look at why the outboard bearing of a VAZ driveshaft is replaced and how to do it?

Why is the cardan bearing replaced?

The bearing is a structure of two bushings of different diameters, between which there are metal balls treated with lubricant. The second bearing race has a fastening device and is suspended from the bottom of the car. That is why it is called suspended. The internal cavity of the part is closed using a special insert. It protects the lubricant from external influences such as dust, moisture and other foreign particles. When this insert fails, bearing wear accelerates rapidly, which must be periodically monitored.

This element performs the following functions: reducing the level of vibration of the driveshaft and ensuring its rotation without any loads or deviations from the specified rotation path. While driving a car, you can hear a sharp and loud knock, which is well transmitted through the seats of the car, and then develops into a certain vibration or even beating. Gradually the knocking decreases, but the vibration remains - this means that we can confidently declare that the outboard bearing is faulty.

How to change the suspension bearing on a VAZ 2107?

As soon as you hear the characteristic sounds of bearing failure, evaluate the appearance of the bearing. To do this, you need to look where it is located. Most often, a failed bearing has minor external damage in the form of a bent protective insert, and traces of lubricant are visible on the housing. After this, you can begin replacing the part.

Replacement procedure:

This is how to replace the outboard bearing of a VAZ driveshaft. As you can see, this is not a complicated operation at all and only requires you to have space and the appropriate tools.

The design of the cardan outboard bearing is a mechanism that allows you to rotate and move parts in space. The bearing device secures the axle by supporting the shaft and absorbing radial load forces. But, like other components, sooner or later every car needs to replace the driveshaft outboard bearing.

The presented bearing serves as an additional support and dampens possible vibrations during rotational movements of the cardan shaft. If you do not systematically lubricate the bearing, then after twenty to thirty thousand kilometers you may need to replace it with a new one.

Sometimes during a coasting trip a strange sound appears, reminiscent of a hum, coming from somewhere unknown. This noise may be a sign that the bearing is faulty.

It is important to distinguish between the knocking of the cross and the bearing hum. Usually, a knock occurs when you touch the structure - a harsh, dull steel sound.

And the hum, which resembles the grinding of wheels on a snowy surface, is accompanied by trembling, and is felt only at speed.

After driving the car onto the lifting device, you will need to make sure that extraneous noise comes directly from the area of the suspension cardan bearing. The noise may accompany the shaking.

When the car owner makes sure that beating, shaking and various kinds of twitching come from this area, then it is necessary to unscrew the securing bolts and lower the cardan shaft onto the ground surface

But you need to be careful - the CV joint of the cardan shaft should emerge from the transfer case and oil fluid will begin to drain from there. After this, you need to check the bearing for the presence of play.

If the mechanism is in good condition, then there should be no play.

Preparing tools

Replacing a car suspension cardan bearing is quite possible without the assistance of car service employees. The main thing is to carefully review the book, which describes how to repair and operate a specific vehicle. You also need to own the right tools and have a lift or overpass at your disposal. You may need a vinegar solution or a special liquid to decarbonize the fastening bolts if they have become rusty.

In principle, changing the outboard bearing of a VAZ-2107 or VAZ-2106 cardan will not differ much from replacing the same component on a Ford or Toyota. The scheme is similar everywhere, with some differences, but not dramatic ones.

To replace the bearing you will need

Replacing the suspension bearing on a VAZ 2101-VAZ 2107

Welcome! Bearings - they come in two types, the first type is sliding bearings, and the second type is rolling bearings, which are most often found in all components and assemblies; in general, bearings play a very important role if they are used in any mechanisms, and the outboard bearing plays a significant role when the driveshaft is operating, if it is worn out and the rubber is hard as a rock, then large vibrations will appear in the body, which will occur both during driving and when the car is running, and of course, if the car is heavily loaded or if it even had a slightly lower ground clearance, then the suspension bearing plays a very important role in this and if it is damaged, then be prepared for the fact that even with the slightest drop in the car’s suspension, the cardan will begin to hit the body.

Note! To replace this bearing on a car, you will need quite a few tools, the most important thing is to stock up on: Wrenches, spanners and the same kind of wrenches, if you have a wrench with spanner heads in your arsenal, then take that too, and you will also need a soft metal hammer, kerosene or something like that, in addition special. You will need pliers with which you will have to remove the retaining rings of the cups of the crosses, as well as an inspection hole, a universal puller and Cobra-type pliers!

Summary:

Where is the outboard bearing located? The suspension bearing is located in the very central part of the propeller shaft (see photo below), and it is secured with a cross member to the car body (It would be more correct: the cross member is screwed to the body with nuts, and the bearing is already attached to the cross member using two central bolts) so that To remove this bearing, you will have to take care of the propeller shaft (It must be removed, otherwise you will not replace this bearing), and then, armed with a puller, the bearing can be easily pressed off the shaft on which it is located and replaced.

When should an outboard bearing be replaced? The bearing consists of the following elements: Firstly, the rolling bearing itself, and secondly, from the rubber part that fits this bearing, so over time the rubber hardens and due to the fact that it has become rough, all vibrations when rotating the driveshaft simply will not occur dampened by this rubber, because of this, problems will appear such as excessive vibration in the body and the crosspieces may fail earlier, so even when buying a new bearing, pay attention to this rubber, it must be elastic, otherwise buy a bearing in any other place or from another manufacturer, as for the bearing itself, over time it develops play and it can start to jam (When buying a new one, also take this into account, even the slightest play or jamming is not acceptable), if play appears, then heavy shocks will occur on the body when starting the car or after changing gears, and of course vibrations, as for jamming, this can only be seen by removing the bearing or just crawl under the car and rotate the driveshaft, there should be no snagging in the bearing area , otherwise it is changed to a new one.

Signs of breakdown

The main signals that an outboard bearing has failed and needs repair or replacement are:

A sharp blow to the body, which in some cases can be felt by a person through the car seat;
A characteristic hum that increases with increasing speed;
Creaking or “squeaking” of the bearing, which may disappear and appear under certain conditions;
Vibration when the damper rubber detaches from the race or bearing.

It often happens that a newly installed outboard bearing fails after just a few thousand kilometers. This is usually due to unqualified replacement of a spare part. Incorrect reassembly of the cardan or an error in the selection of bearings leads to rapid failure. The reason for the frequent failure of the outboard bearing may be due to wear of the outboard bearing kit.

How to replace the suspension bearing on a VAZ 2101-VAZ 2107?

1. At the beginning, you will definitely need to remove the propeller shaft from the car, so that it will be much more convenient to work with the outboard one (How to remove, read “in this article”), after this is completed, in the central part, separate the two forks of the propeller shaft from each other and put one part in one direction, and the other part in the other (see points 2 and 3 “here”), this is where the main work is completed and if you have a special one. puller, then finishing the final part will not be difficult for you.

2. Now that everything is removed, unscrew but not completely (leave it right at the tip) the central nut that secures the suspension on the shaft, then take a puller and, using it, as shown in the small photo, press out one of the forks (the one behind which the suspension located) and unscrew the nut completely and remove the fork.

Note! Pay attention to the small photo above, a hammer is used there, it will need to be used if the fork does not want to be removed (Rusted and the like), a couple of blows with a hammer (the puller will need help) and consider that the fork has been removed from the shaft!

3. And finally, unscrew the two bolts (They are located next to each other) that secure the cross member to the intermediate support and then remove it (see photo 1), then prop the intermediate support together with the bearing on two corners or something like this and through the head, knock the bearing off the intermediate shaft (see photo 2), in this case the outboard bearing assembly has been removed from the shaft. If you change just one bearing (it’s better to replace the entire assembly), then you will need to separate it from the rest of the part, it It is held in place with the help of a locking ring (Remove the mud deflectors before doing this) which needs to be hooked onto a special one. a device for removing retaining rings (see photo 3), and after this is done, use a suitable sized head to knock out the bearing (see photo 4) and install the new one in the reverse order.

Note! If you cannot remove the suspension by knocking it out, then in this case it will need to be cut, an angle grinder will help you, but only if you decide to do this, be careful not to damage the shaft and by the way, in this case you will no longer be able to replace the bearing separately ( Only suspended assembled)!

4. The suspension is installed in the reverse order, new bearings very rarely put a good amount of lubricant, usually they put a little bit and that’s it, this is such a saving, if you don’t want to constantly climb into the car, then we recommend that you add additional lubricant to the bearing, which It’s better to add lubricant at your own discretion, because people add very different lubricants to bearings and some like one type and others like another, so to avoid disagreements, add lubricant at your own discretion and by the way, watch the video below for clarity, in It, of course, does not show a suspension bearing, but exactly the same rolling bearing, where to add lubricant, watch in this video.

Replacement of VAZ 2107 cardan crosspieces

Faulty crosspieces cannot be repaired. Theoretically, the universal joint is considered a very reliable part with a service life of more than 500 thousand km. In reality, even the highest quality crosspiece requires replacement after 50–70 thousand km. The reason for this is bad roads, intensive use of the car, etc. To replace the VAZ 2107 CC you will need the following tools and materials.

set of wrenches;
hammer and spacer made of soft metal;
the spacer is slightly smaller than the diameter of the crosspiece lugs;

Dismantling the VAZ 2107 cardan

Before replacing the CC, it is necessary to dismantle the cardan drive. This is done as follows.

If the car has been in use for quite a long time, the cardan mounting nuts are filled with WD-40 or kerosene. After that they can be easily unscrewed.
Use a sharp chisel or other tool to place marks on the flanges of the cardan and axle. This is necessary to ensure mutual alignment during subsequent installation of the cardan.
Using a 13-mm wrench or socket wrench (preferably curved so as not to damage the threads of the nuts), unscrew the cardan mounting nuts. If the bolts start to spin, you should fix them with a screwdriver.

Removing the VAZ 2107 cardan cross

The cups and bearings can be removed from the driveshaft clamped in a vice using a special puller. However, this device is not very convenient and is used extremely rarely. Usually a standard set of tools is used. Dismantling the cross is carried out in the following order.

Using round-nose pliers or pliers, remove the retaining rings from four sides of the cross.

Before installing new CCs, the lugs, fork and grooves for the retaining rings are cleaned of dirt and rust with a metal brush. The installation itself is carried out as follows.

Any two cups facing each other are removed from the new crosses.
The crosspiece is inserted into the eyes of the end of the cardan.
Cups with bearings are generously lubricated with grease or G' Energy grease and installed in place.
Using a hammer and a soft metal spacer, the cups are driven in until a groove appears for the retaining ring.

Installing the cardan

When installing a cardan with new crosspieces in place, you must:

lubricate all connections with grease;
make sure that the lubricant does not get sand or dirt;
check the condition of the crosspiece seals and, if necessary, replace them;
install parts in accordance with the marks made during dismantling;
First insert the splined part into the flange, and then tighten the cardan bolts.

Video: replacing the VAZ 2107 universal joint

Thus, to replace the cardan cross, all you need is the car owner’s desire to do it himself and a standard set of mechanic’s tools. Carefully following the instructions of specialists will allow you to do the work efficiently and avoid possible mistakes.

The rear-wheel drive VAZ classic seems reliable and indestructible, at least this concerns the Fiat transmission, from which you can’t expect a stab in the back. However, in order to be confident in reliability, it is necessary to carefully select spare parts

Using the example of replacing the universal joint of the seven, we will see how important it is to buy high-quality hardware and distinguish it from junk

Elastic coupling for driveshaft VAZ 2107

The driveshaft of the VAZ 2107 consists of two parts (front and rear), connected to each other by a articulated coupling (cross). This design allows you to avoid loads on the shaft while driving, when the body and chassis of the car begin to “play.”

The end of the rear shaft is connected to the axle gearbox, and the end of the front shaft is connected to the gearbox shaft. The connection to the gearbox is made through an elastic coupling, which is a kind of buffer for leveling shock and dynamic loads on the driveshaft and gearbox shaft.

Flexible coupling location

The elastic coupling is located in the lower front part of the car on the rear side of the gearbox. You can see it if you remove the engine protection and climb under the car. The coupling is easily recognizable due to its hexagonal shape.

Coupling design

The basis of the coupling is a cushion made of especially durable rubber. Along its circumference there are six steel bushings fused into rubber, through which the bolts connecting the cardan flanges and the gearbox secondary shaft pass. The coupling kit also includes a special tightening clamp, which is put on it during installation or dismantling.

Diagnostics of elastic coupling faults

The coupling may fail as a result of:

wear of metal bushings;
body wear;
rupture of the body.

In each of these cases, the malfunction will manifest itself in the form of body vibration and extraneous sounds coming from the gearbox.

The condition of the coupling can only be checked by inspecting it and assessing the size of the play between the flanges of the gearbox and cardan shafts. This is done as follows.

The car is driven onto an overpass or inspection hole;
The engine protection is removed;
The coupling body is inspected and the condition of the bolted connection is assessed.
By loosening the cardan, the presence or absence of play is determined.

If signs of wear or mechanical damage are found on the coupling body (the body is partially or completely torn), the part must be replaced. A slight play (provided the body is intact) is eliminated by tightening the nuts of the connecting bolts. If the play is large, the elastic coupling will have to be replaced with a new one.

Criteria for choosing a new coupling

Driveshaft couplings for the VAZ 2107 in Russia are produced under catalog numbers 2101–2202120 and 2101–2202120Р. The retail price of the part, depending on the manufacturer, ranges from 400 to 600 rubles.

Table: technical characteristics of the elastic coupling of the VAZ 2107 driveshaft

Suspension bearing for propeller shaft VAZ 2107

The suspension bearing (or idler bearing) is designed to ensure uniform rotation of the driveshaft while driving. In addition, it is an additional point for attaching the cardan and is included in the design of the intermediate (suspended) support. In fact, it itself is a support, since it comes complete with a bracket, with which it is attached to the bottom of the car through a transverse bracket.

Outboard bearing location

The bearing is installed in front of the spider at the end of the front of the driveshaft. It can be seen from the inspection hole in the axial recess of the bottom behind the exhaust pipe at its junction.

Hanging bearing design

The hanger bearing is an ordinary closed type ball bearing. It consists of an inner and outer race and seven steel balls. For mounting on the bearing housing there is a steel bracket with holes for bolts.

Diagnosis of outboard bearing faults

The causes of outboard bearing failure are usually wear or mechanical damage. The service life of the bearing is about 150 thousand km. However, exposure to moisture, dirt, as well as stress caused by poor road conditions can significantly reduce it.

Signs of bearing wear are:

slight vibration;
hum emanating from the place where the cardan is “suspension”;
shaft play.

It is quite difficult to accurately diagnose bearing failure; this will require dismantling the driveshaft.

Outboard bearing selection criteria

Suspension bearings for the VAZ 2107 in Russia are produced under catalog numbers 2101–2202080 and 2105–2202078. The requirements of GOST 6–180605 apply to them. Imported analogues must comply with the requirements of ISO 62305.2RS. If there are no such markings on the packaging of a new part, it is most likely a fake, and it is better not to purchase it. The average retail price of a VAZ 2107 suspension bearing is 450–500 rubles. When choosing a manufacturer, it is better to give preference to the Vologda Bearing Plant. Bearings produced at VPP are considered to be of the highest quality and most durable.

Table: technical characteristics of the VAZ 2107 suspension bearing

Why is the cardan bearing replaced?

Replacing the VAZ 2107 driveshaft coupling

The coupling is replaced on an overpass, a lift or from an inspection pit. Tools you will need:

two 13mm wrenches;
two 19mm wrenches;
head or key 27;
set of heads;
pliers;
chisel;
hammer;
slotted screwdriver;
awl;
steel beard;
round nose pliers with thin curved ends;
vice with workbench;
special puller for bearings (preferably);
CV joint type grease.

To replace the coupling, you must perform the following steps:

Find the parking brake cable equalizer under the car. Use pliers to remove the front cable spring.

Video: replacing the elastic coupling of a VAZ 2107

Replacing the suspension bearing VAZ 2107

To replace the propeller shaft outboard bearing, you must:

Disconnect the handbrake cable and remove the driveshaft in accordance with paragraphs. 1–13 instructions for replacing the flexible coupling.
Using round-nose pliers, remove the retaining rings of the crosspiece needle bearings.

Video: replacing the suspension bearing on a VAZ 2107

Balancing the driveshaft VAZ 2107

After disassembling and replacing any element, the driveshaft must be balanced. This is done on a special stand, so for balancing it is easier to contact the nearest car service center. The balancing itself consists of measuring and eliminating the imbalance on the three shaft supports. Its permissible value at a shaft rotation speed of 5500 rpm should not be more than 1.62 N*mm. The imbalance is eliminated by welding small weights (metal plates) onto the surface of the front driveshaft.

If vibration appears after repairing the driveshaft, you can try to balance it yourself. Naturally, there can be no talk of any accuracy here, and the balancing itself will be only temporary. This is done as follows.

Drive the car onto a viewing hole or overpass.
Inspect the driveshaft.
Conventionally divide the front universal joint into four sectors (if you imagine it in cross-section).
Find a small weight weighing 30-50g and attach it to the front of the shaft using tape or tape.
Drive along a flat section of road, paying attention to your choices.
If the vibration does not disappear or increases, move the weight to another sector and repeat the checking process.

When the load is in its place, the vibration should stop, unless, of course, it is caused by an imbalance of the shaft.