If it turns out that the bearing is in order, and the reason for the knocking lies in the wear of the damper or other element that is not a critical component of the structure, the support can be repaired.
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In this case, we see a serviceable rubber pad, which simply changed its size during operation. Shrinkage can be compensated for by installing a machine-made gasket.
It will not be possible to return the support to 100% performance, but you will ensure a mileage of several thousand kilometers, and without any visible problems in comfort and safety.
Despite the fact that the support of the shock absorber strut is a critical unit, you can restore its performance without contacting the service. Depending on the severity of the damage, you choose between installing a new unit, replacing worn components, or repairing. The decision depends on your qualifications and the cost of components.
Repairing the shock absorber of the telescopic strut usually does not lead to the desired result, therefore, if necessary, we recommend replacing the shock absorber. You will need: a "8" spanner, a "17" spanner wrench, a spring compression device.
1. Remove the shock-absorber strut from the car (see "Removal and installation of the shock-absorber strut of the front suspension").
2. Remove the spacer from the rack post.
3. Install the spring compressor and compress the spring.
4. Holding the shock absorber rod with an open-end wrench "8", unscrew the rod nut with a spanner wrench "17".
5. Remove the upper rack support.
6.. upper spring plate with compression buffer.
8. Inspect the upper rack support. Cracking and peeling of the rubber mass from the metal base is not allowed. Replace the defective support.
9. Check the support bearing of the strut. Its rings should rotate easily and without jamming relative to each other.
10. Visually inspect the compression buffer and protective boot. If the compression buffer or protective boot is damaged, replace the assembly with a new one.
11. Remove the rubber gasket from the upper spring seat.
12. Replace the heavily crimped or torn gasket with a new one.
13. Inspect the spring. Replace the spring with deformed or broken coils.
NOTE: Replace springs only in pairs (right and left at the same time).
14. If the bottom gasket is frayed on the good spring, remove it from the spring and replace it with a new one.
15. Inspect the rack parts. If cracks, deformation and destruction are found on the strut body, the lower spring cup, fountain mounts to the steering knuckle, replace the strut. It is prohibited to carry out welding work on the stand - this may affect traffic safety.
16. Install the shock absorber vertically and release it several times until it stops and raise the shock absorber rod. Make sure the stem moves without sinking, binding, or knocking. Otherwise, replace the shock absorber. In addition, replace the shock absorber if you find traces of fluid leaking (slight fogging of the upper part of the body is allowed) and if the threads in the upper part of the stem are damaged.
WARNING: Replace shock absorbers only in pairs (right and left at the same time).
17. Assemble the shock absorber strut in the reverse order to disassembly. Tighten the shock absorber rod nut to 59-73 Nm 16.0-7.5 kgcm).
This is how the details of the shock absorber strut look like, laid out in the order of their installation.
When assembling the shock absorber strut, install the strut support so that the mark is on the support.
... coincided with the mark on the upper spring plate, and both marks when installing the rack on the car should be directed towards the outside of the car.
18. Install the shock absorber strut on the car ("Removing and installing the shock absorber strut of the front suspension"). NOTE: After repairing the shock absorber, check the wheel alignment if necessary. Take advantage of the services of workshops with special equipment.
Support bearing VAZ 2109
As a rule, on the VAZ 2109, replacing the support bearing for some drivers is a problem. They do not know how to carry out a replacement, although there is nothing complicated in it, and they take their vehicle to a service station, where they take a lot of money for a simple operation. In the VAZ 2109, the replacement of support bearings is easy and simple to carry out independently, without the presence of any special tools and equipment that are difficult to find. In this article, we will learn how to carry out an operation in your own garage without spending a lot of time, effort and money.
Replacing the support bearing VAZ 2109
As you know, a thrust bearing or OP, as we will call it hereinafter, is designed to perform certain functions. Its main task is to rotate the rack around its axis. The OP is located in the front suspension and on a front-wheel drive car, which is the VAZ 2109, however, as well as on a rear-wheel drive, in fact, it is the most important link. Before we move on to the direct algorithm for replacing the OP, we learn important information regarding this bearing. So:
VAZ 2109, like all modern cars, has in its design to control movement not only an elastic, but also a damping device called a shock absorber. This is one of the main components of the front suspension.
Replacing the support bearing on the VAZ 2109
Note. The shock absorber strut is designed to absorb vibrations that inevitably occur when a vehicle is moving, even on a perfectly flat road. It is the strut support that dampens vibrations. The rack itself is fixed with its lower end to the steering knuckle, and with its upper end to the car's mudguard.
The OP is an integral part of the rack support. These parts belong to the group of rolling bearings. They have found wide application in domestic mechanical engineering due to many advantages, among which I would like to highlight versatility, perception of combined loads, and much more.
The OP is directly involved in damping road vibrations, and, to put it another way, in the damping and shock absorption of the VAZ 2109. In this case, the OP realizes a movable connection of the shock absorber to the car body, simultaneously influencing the accuracy of the wheel mounting angles.
Replacing the support bearings in the VAZ 2109
The OP still differs from the standard rolling bearing, although it belongs to the same group. Here, the rolling bodies are always cylindrical rollers located perpendicular to each other. In addition, each of the rollers is protected from contact with each other by a special cage. Thus, each of the rollers acts as a separate element that independently takes on loads from different directions.
Replacement of support bearings VAZ 2109
In modern cars, such as the VAZ 2109, the following types of OP are usually used:
Bearing with integral ring (it can be inner or outer). This type of bearing has mounting holes and does not require clamping flanges. In addition, this type of OP has built-in spacers to ensure constant rotation accuracy. This type of OP is used, both for the rotation of the outer and for the rotation of the inner ring.
There is another type of OP, which is endowed with an already detachable inner ring for rotating the outer one. The outer ring in this type of OP is in contact with the body. This type of OD is used wherever the accuracy of rotation of the outer rings is usually required.
The third type of OP is a bearing with a detachable outer ring for rotation of the inner one. In this type of OP, the inner ring is already in contact with the body, and the outer one is detached. It is used where it is necessary to ensure the accuracy of rotation of the inner ring.
Replacing the support bearing on the VAZ 2109 rack
The fourth type of OP is called single-split.In such a bearing, the outer ring is split at one point, which increases the rigidity of the entire bearing. It is used again where it is necessary to ensure high accuracy of rotation of the outer ring.
Typically, strut support faults are detected while the vehicle is moving. If there is a problem with the stance, there is a characteristic knocking sound, especially when driving on uneven roads.
Note. If such a knock occurs, it is necessary, first of all, to check the reliability of fixing the support and if it is to be replaced, then not only the rubber damper, but also the OP is replaced simultaneously with it.
During the movement of the car, the OP is subjected to enormous loads, because it is this element that restrains the shock absorber's rebounding stroke. Because of this, this bearing is checked every 20 thousand kilometers for a malfunction, and every 100 thousand kilometers a mandatory replacement is required, regardless of the state of the rack itself.
Replacing support bearings on a VAZ 2109
Note. Most often, the OP for the VAZ 2109 requires replacement if for its owner the main and daily road is a primer or he often goes to the country house or to nature, driving through uneven bumps and potholes.
The shock absorber strut support is endowed with a rubber-metal element, which cracks during long-term operation. The wear process of this element is also influenced by dramatically changing weather conditions, oil deposits and other contaminants. In this case, it is advisable to replace this element so that it, in turn, does not affect the operation of the OP.
Vaz 2109 thrust bearings
As mentioned above, this element experiences incredible loads during the movement of the vehicle. Therefore, you have to regularly check the support bearing for wear and monitor its technical condition. It is not difficult to do this, and it is enough to know a few important nuances.
Note. A knock when the car is moving on an uneven road already a priori indicates a malfunction associated with the OP or the rack as a whole.
To check the OP for wear, you need to do the following:
We grab the rack with both hands.
We ask the assistant to shake the car.
If a characteristic knock is heard, the OP must be replaced.
Vaz 2109 strut support bearing
It is also important to know that a worn-out OP provokes many violations. If it is not changed in a timely manner, then this, first of all, will affect traffic safety, the camber-toe setting will be violated and the wear of the shock absorber itself will accelerate.
The bearing, if a problem is found in it, cannot be repaired. It can only be changed, but the replacement process can be carried out in various ways:
The first method involves dismantling the entire rack, of course, with levers and everything that is attached to it. If you use this replacement method, then all the alignment settings are saved.
Another replacement method involves disconnecting the strut from the steering cam. After that, everything else is only removed.
Vaz 21093 support bearing
This method of replacement is more in demand and for its implementation you need to arm yourself with the following tools:
Dedicated stand nut puller.
Spring ties.
Special puller for removing the steering tip.
The hub cap is removable.
The SHRUS nut will be unlocked. In some cases, this nut can be locked so tightly that it is not possible to crawl up to it with a screwdriver or any other tool. In this case, you will have to work with a drill with a suitable drill size.
We take the required size of the head and use the knob to unscrew the SHRUS nut until it becomes easy to rotate by hand. The assistant keeps the brake pedal depressed at this time.
We put the car on a lift.
We remove the wheel.
Now you will need to unpin the steering tip nut. After that, it will need to be turned off.
We take a hammer and a pry bar - we press out the finger.
Replacing the OP in the first way
VIDEO
Disconnect the ball, first unscrewing the two bolts holding it.
We take the brake hose and release it from the rack.
Note. It is imperative to take the caliper aside so that it does not hang on the brake hose.
Now you need to unscrew the rack nut, but not completely.
We now unscrew the three nuts securing the support.
The CV joint nut is turned off. The stand is removed, and the CV joint of the vaz is simultaneously pulled from the slots.
Strut removal operation
After tightening the spring, the OP is turned away.
We install a new bearing.
We collect everything as it was.
Note. When reassembling, it is advisable to install a new nut, which must be tightened with a large torque and must be locked.
We hope that the instructions for replacing the support frame with your own hands will be invaluable. In the process of work, it is imperative to use photos and videos - materials that give practical understanding. Thus, by doing everything yourself, you can save a lot, because the price for such repairs in professional workshops is not low.
Replacing the front suspension struts. Replacing the front suspension springs Replacing the strut support [crab] and the front suspension pivot bearing.
Surely you will be interested in:
Oil smudges are visible on the racks or the entire rack is covered with oil deposits (the rack has leaked).
On the vibration stand, it was revealed that the rack needs to be replaced.
If you look at the wheel from the side while driving small bumps, the wheel does not immediately stop vertical oscillations.
If you shake the car vertically, then the vibrations damp out more than once. (i.e. if you press, for example, on the wing of the car and release, then the car at the working stance should simply take its normal position, if the struts are punctured, then the car body will make some more vibration)
Symptoms for replacing suspension springs (tired springs):
The car has less ground clearance than the new springs.
The spring is broken.
The spring coils are too close and on bumps, the spring coils may collapse.
Symptoms for replacing the strut support (crab):
When viewed from above, the following replacement symptoms are possible in the center of the support:
The strut stem is not in the center of the strut post.
The rubberized drain support element (central part) has a visible working out, or rubber torn from it is visible on its sides.
If the head turns the nut of the fixing post on its support, then the rubberized central part of the support will rotate together with the rod of the post.
There are visible cracks or damage on the crab.
Symptoms for replacing the front suspension pivot bearing:
Symptoms for replacing anthers on a rack:
You will need:
To carry out the entire procedure, you will need at least some set of tools, it will be most convenient with a ratchet and heads, as well as a pair of ordinary keys.
First, we rip off the wheel bolts and jack the right side of the car. We substitute a chock under it (take a reliable chock, so that without risk). We remove the wheel and see:
Next, you should rip off all the nuts, while the entire suspension is under tension from the spring, it makes it easier for us to rip off the strut stem nut. If the crab is normal, then it is easy to pluck it. If your crab has fallen apart, then unscrew this nut until the spring is tightened, and the rubberized piece of metal of the crab rests on the sides and top of the crab itself, try to rip the nut off with sharp jerks. I managed to rip off after probably 5 turns of the stock.
We also tear off 3 nuts securing the crab to the body.
We take out the stand assembly and tighten on the spring both ties ... To understand how much to pull, you can unscrew the drain stem nut upwards. ( Do not under any circumstances unscrew this nut yet. ). So the ties need to be twisted until the crab or the cup or the spring itself begins to walk a little in their places. all as soon as they saw a free play, such as a crab or a spring, unscrew the rack stem nut.
After that, everything is removed from us:
Shock absorber support (2-piece)
Bearing
spring cup with boot
spring
And the shock absorber itself remains.
We replace the faulty element, you can still check the elasticity of the rack for your own peace of mind.
If you put a spacer, then you probably sold long hairpins with it, knock out the old ones with a hammer and drive new ones into it, now they will be enough for the spacer.
If you change the spring, you should remove it from this tie, unwind them alternately and a little bit, as soon as you remove it, wind the ties in the same way on the new spring.
If the boot is torn, change it!
In order for the assembled stand to stand up immediately and correctly, without twisting, twisting and swirling, you need to assemble it correctly:
Put a spring on the rack (it is understandable to put on, it is not possible to confuse the position)
A rubber band from a cup was put on the spring (there are traces on it where the end of the spring was, we put it on)
We put on the cup itself on the elastic band or with it. If you take a closer look at it, you will see a small notch and the inscription OUT on the side of the cup (see the first photo on the right), and so this notch should look in the same direction as the mount of the stand itself (shown by arrows in the photo).
further on the bearing cup. (do not disassemble or lubricate it, it is almost eternal and as it is, if it does not spin at all, you can get a new one, but I have never met this!).
We put a crab on the bearing, the lower part of the strut support, and on it and already the strut rod, while the strut will probably have to move a little. Make sure the bottom of the crab is seated on the bearing correctly and tighten the strut nut.
now you need to get rid of the mats, many who change the racks themselves then swear when they try to hit the holes with the pins in the body, but they do not fit, and the already collected drain is twisted and twisted and cursed by weight. So, in order to get there right away, on the crab, see the letter F from above, it means FRONT (before), in short, we turn the crab on the bearing so that this letter looks forward when installing the rack. (photo 2)
Collected, it's time to put. You are from below, assistant from above. You seem to raise the rack from the bottom and try to get it into the holes in the body, the assistant directs the crab from above, and if at least one pin gets into the nut, it’s easier further. We swing and move the rack to get into all the holes, if you hit 2, you can tighten the nuts on them and the third hairpin will go in place by itself. as soon as all 3 pins are in place, we loosen the nuts on them to the very tip, so that when you hit the bottom, the entire drain has a free run in different directions.
Video (click to play).
Here it is more difficult - we take the drain with two hands, between them we put the assistant's foot on the pivot fist, and ask him to press or jump on it, while at this time, tilting the pivot fist and moving the stand itself, we try to bring it straight to the mountings, while strongly on the anther with a stand not yulozim so as not to tear it. brought on one plane of attachment (it turned out approximately as in photo 1). now we take the screwdriver again, and again ask the assistant to suppress it with jerks, while trying to get in, connect the holes in the rack and the mountings in the steering knuckle, as soon as these holes are caught, do not push the screwdriver to the end, no deeper than the middle of the mount (this makes it more convenient to look for coincidences second holes). Wiggling with a screwdriver, find the position when the second holes coincide, and either immediately insert the bolt, or there is something thicker than a screwdriver, also to the middle (not for departure). if so, then feel free to pull out the screwdriver and wiggle a new stick to find the position for the bolt. (photo 2). After one bolt is inserted, insert the second.