Replacing the outer CV joint boot on a VAZ 2109 (Video)

A CV joint is a constant velocity joint. It is a loaded, very significant element of the chassis for front-wheel drive VAZ 2109. Under ideal operating conditions, the resource of the element is designed for a long service life, almost equal to the service life of the car itself.

Causes and breakdowns

In reality, the resource of the CV joint turns out to be significantly less, which is caused by operating conditions, poor quality of roads, driving habits and other factors.

People usually call a CV joint a “grenade,” which is due to the external similarity of the element to this explosive device.

Here's what you should know about grenade malfunctions:

• Practice shows that the most common cause of CV joint failure is dirt, dust, and sand that enter the mechanism through a damaged boot;
• Sometimes the problem of a non-functioning grenade can be solved by replacing the boot. This is possible if the CV joint itself has not yet worn out due to exposure to contamination;
• If the damaged boot is not detected in time, the grenade will be completely worn out within literally 200 kilometers;
• If the CV joint fails, a strong crunching sound appears when cornering and accelerating. Such a symptom indicates the need to urgently replace the CV joint;
• The cost of new grenades is quite affordable; they are available at any auto parts store. But you should purchase those that meet the technical requirements of the VAZ 2109;
• If you have at least a little experience in repairing cars yourself, it is quite possible to replace a grenade with your own hands.

Old and new element

Causes of CV joint failure

Unlike other cars, it is especially difficult for the VAZ-2109 to keep the grenade boot in working condition for a long period. The main reasons for its failure, first of all, can be unfavorable climatic and external factors. As a result, cracks will form on the parts, and further operation will be impossible. Through the torn mechanism, dust and dirt get inside the hinge, and because of this, the grenade parts wear out. It is not difficult to detect this: when the car is moving and when turning, the car makes a “crunching” sound, and this is already the first signal.

Types of CV joints

Before you begin repairs, you need to find out exactly how the unit is designed.

The pair of drives on the VAZ 2109 is equipped with a total of 4 CV joints.

Outer

This arrangement of grenades allows the wheels to rotate during turns and constant operation of the suspension system. To put it simply, the outer CV joints are responsible for transmitting torque when cornering, and the inner ones are responsible for the vertical movement of the wheels. These are collisions with bumps, holes, roll in turns, etc.

Interior

Replacing the outer CV joint boot of a VAZ 2109 with your own hands

Replacing the outer CV joint boot of a VAZ 2109 is quite simple; you don’t even need to have a mechanic’s rank. Even a complete replacement of external grenades does not cause difficulties if the car is taken care of. The problem can only be caused by unscrewing the hub nut. And then there are small subtleties of this procedure, which will be discussed below. When operating the vehicle, it is necessary to monitor the condition of the anthers, otherwise the grenades will be destroyed as a result of dust, dirt, and water getting inside.

Failures of CV joints on a VAZ 2109

Insane grinding and knocking noise from the wheels, especially when starting with the steering wheel turned to the side. This is the first sign that the grenades are out of order. The service life of CV joints is quite long, but many factors influence it:

1. Driver's driving style. The sharper the starts, the shorter the service life of the hinge. The same goes for braking.
2. Caring for the condition of anthers. If there is even a small crack, it is necessary to completely disassemble the drive, wash the grenade in solvent or kerosene, dry, lubricate and install a new boot.
3. Quality of the product at the time of purchase. Some manufacturers make hinges from low-grade steel, but this is unacceptable, since the mechanical impact is very large.

Pay attention to the condition of the VAZ 2109 steering rack boot. The comfort of driving a car also depends on it. But replacement is much more difficult. The price of one set of external CV joint is at least 950 rubles. Moreover, the cost may vary, it all depends on the region and the greed of the sellers. The set consists of:

1. Directly to the hinge.
2. Two clamps.
3. Anther.
4. Pack of lubricant.
5. Retaining rings.

But the price of the boot fluctuates between 150-200 rubles, plus new clamps - no more than 50 rubles. The difference is noticeable, so it is cheaper to replace the boot than to repair the drive.

Removing the outer CV joint of a VAZ 2109

All work can be carried out without an inspection hole or overpass; all you need is a good jack and supports. The disassembly procedure is as follows:

1. Place stands under the rear wheels.
2. Remove the cap from the front wheel.
3. Unlock the nut using a sharp chisel and hammer.
4. Using a 30" socket and a long lever, rip off the nut.
5. Remove the four bolts securing the wheels to the hub.
6. Place a jack under the side to be repaired and lift it up.
7. Remove the wheel. It is advisable to install a support under the body.
8. Pull the cotter pin out of the tie rod end pin and unscrew the nut.
9. Using a puller, pull the pin out of the steering knuckle.
10. Unscrew the two ball joint mounting bolts. This will be easier than using a puller to knock the pin out of the hub.
11. The hub now “walks” freely on the stand. Personally, I knock out the inner CV joint using a small chisel and hammer. Literally 2-3 sharp and precise blows, as the drive comes out of the box. But be sure to drain 2/3 of the oil from the gearbox, otherwise you will lose it.
12. Knock the outer grenade out of the hub.

You don't have to remove the drive completely, but that's not very convenient. It is much more pleasant to work with grenades if they are accessible and can be clamped in a vice, rather than bending over under a machine. Before replacing the external grenade boot, assess the condition of the entire drive for damage or defects. After all, it may turn out that not a partial repair is required, but a complete one.

Replacing the boot yourself

Replacement procedure:

1. Remove the two clamps.
2. If you do not plan to use the old boot anywhere, you can cut it with a knife.
3. Using a hammer and a wooden spacer, knock out the outer CV joint. Try not to damage it; it is advisable to fix the drive shaft in a vice.
4. It is advisable to replace the boot and the internal grenade, so that if something happens you do not have to do the work again.
5. Wash the grenade free of old grease and dirt.
6. Install new boots and put on the inner CV joint of the VAZ 2109.
7. Place grease under the boot. It is better if you put more lubricant there than in the bag supplied with the kit.
8. Secure with clamps.
9. Install the drive in reverse order.

The repair on the left and right sides is the same, although the drive shafts are different. Carefully inspect all components to ensure timely replacement. In particular, pay attention to the condition of the steering tips, rack boots, shock absorbers, and ball joints.

Video about replacing the CV joint boot on a VAZ 2109:

vazpro.ru

Replacement

If problems arise with grenades, you should determine which ones have problems. Next we will look at how to change the drive and how to remove it. Additionally, we recommend watching the repair manual video.

The procedure for replacing inner and outer CV joints differs from each other, therefore each stage should be considered separately.

Let's start with the internal.

Inner CV joint

Rubber boots are a vulnerable element of the grenade design. It is not uncommon that by replacing the boot, washing the grenade with gasoline and applying new lubricant, it is possible to solve the problem. If the wear of the CV joint is insignificant, such measures can replace a full repair.

But if you discover the breakdown late, you will have to completely replace the inner CV joints.

1. Apply the handbrake and install chocks under the wheels.
2. Unscrew the hub nut using a wrench and a socket. Carefully remove the punching elements from the nut with a punch. This way you will be able to preserve the carving on the garnet. The nut itself will need to be replaced with a new one during reassembly.
3. The main thing here is to unscrew the nut, lowering the wheels to the ground. Otherwise, you risk breaking the differential and other gearbox components.
4. Raise the car using a jack on the desired side, first loosening the wheel nuts. Remove the wheel.
5. Drain the gearbox oil. This can be done earlier, at your convenience.
6. Release the steering knuckle from the ball joint at the bottom. To do this, unscrew a pair of mounting bolts.
7. Since you have already removed the hub nut and unscrewed the ball joint from the steering knuckle, proceed to removing the splined part of the grenade. To do this, pull the brake disc and strut assembly towards you. She has a decent ride. Just remember to turn the steering wheel all the way so that the tip of the steering wheel extends as far as possible.
8. Pry the inner grenade with a pry bar, which will allow you to remove the drive.
9. Having taken out the CV joint, look at the condition of the oil seal in the gearbox. If you find traces of leaks, be sure to replace the element.

The internal drive (CV joint) is designed to work with smaller angles, its boot is less susceptible to negative influences. Therefore, the internal grenade is changed quite rarely.

Shall we get started?

1. Before replacing the mechanism, you need to drain all the oil from the gearbox. Let's not touch the jack yet! You need to place a brick under the rear wheel of the car, after this procedure we take the 30 socket and, accordingly, loosen the nut. Don't be alarmed, you may need about a half meter long piece of pipe half a meter long as a lever. Remember, we only need to loosen the nut, not remove it yet!
2. Everything worked out? Go ahead! We lift the car with a jack, and only now completely remove the hub nut along with the washer. Now you can safely remove the wheel from the hub.
3. Take the 13mm head and remove the two bolts that secure the ball to the hub. After this, we move the hub and remove the outer grenade from it. Then we attach a pry bar to the internal grenade and, using hammer blows, knock it out of the gearbox. By the way, if you still don’t have a pry bar at hand, a piece of pipe can replace it.
4. When the grenade is removed, we clamp its shaft in a vice.
5. We remove the clamps from the unusable boot. After that, we shoot down the outer grenade. Attention! In order not to damage it, you need to hit it along the edge. When this operation is completed, remove all old grease from the mechanism, wash it in gasoline or kerosene and wipe it well again, this way you can better remove traces of grease.
6. Now we put a new boot on the drive shaft, and using a hammer we hammer the outer CV joint back, after thoroughly lubricating all the parts of the product. After that, we put it on and tighten it with a collar.
7. Then we insert the grenade into the gearbox, driving it there. We place it in the hub and return the ball to its place. We put on the hub nut.

Attention! The hub nut does not need to be tightened with great force. After installing the wheels, tighten the bolts without applying much physical force.

1. We remove the car from the jack, place a brick under the front wheel and tighten the nuts tightly.
2. Well, now pour oil into the gearbox.

That's all. Congratulations! Replacing the boot on the VAZ-2109 is complete!