Car Skoda Octavia Tour deservedly considered one of the most reliable representatives of the class of compact sedans and liftbacks. However, like any mechanical system, the suspension of this car requires careful attention and regular maintenance. One of the critical points ensuring the transmission of torque from the gearbox to the wheels is internal CV joint (constant velocity joint).
This unit operates in difficult conditions: constant loads, dirt, moisture and temperature changes quickly damage it. Ignoring the first signs of trouble can lead to costly transmission repairs or even loss of control while driving. In this article we will look in detail at how to recognize the problem, how to choose a quality spare part and how to independently replace the internal CV joint on your Octavia.
Signs of a faulty internal CV joint
Diagnosis of the hinge often causes confusion among novice drivers, since the symptoms of internal and external SRUS may be similar, but have their own characteristics. The outer hinge most often manifests itself as a crunch when turning, while the inner one gives itself out differently. Nana Skoda Octavia Tour front-wheel drive failure of the internal SRUS is often accompanied by a characteristic beating of the steering wheel and vibration of the entire front part of the body during acceleration.
If you feel a strong shaking that increases as you gain speed and disappears when you discharge gas, this is a sure sign of wear of the tripoid (internal hinge) or basket. It is also worth paying attention to the appearance of a metal clang when a sharp start or gear shift with an increase in speed. These sounds indicate that the gaps in the hinge have become critical.
- π Strong vibration of the body during acceleration, especially in high gears.
- π Characteristic clanging or clicking when sharply pressing the gas.
- π§ Beating of the steering wheel, which is transmitted to the driver's hands.
- βοΈ The grease from the anther, leading to rapid wear.
It is important not to confuse these symptoms with wheel imbalances or problems with brake calipers. For accurate diagnosis, it is best to lift the car on the lift and examine the condition of the anthers and backlash of the mechanism itself. If the anther is torn, the lubricant leaks out, and the dirt gets inside. shrust inevitable.
β οΈ Warning: Operating a vehicle with a faulty internal SRUS may cause the mechanism to jam while driving. This will create an emergency situation, especially when overtaking or driving in a dense stream.
Choosing quality spare parts for Skoda Octavia Tour
The auto parts market is saturated with offers, and choosing the right manufacturer for the Skoda - the task is not easy. For the internal SRUS, it is critical that the hinge geometry is perfect and the materials used withstand high torques. Original details from VAG Volkswagen Audi Group (Volkswagen Audi Group) are usually of excellent quality, but their value is often overstated due to brand markup.
There are proven analogues that offer the best value for money. Manufacturers specializing in transmission components often supply products to the conveyors of automakers. When choosing, focus on the reputation of the brand and the availability of a guarantee. Donβt skimp on this detail, as a cheap Chinese analogue can fall apart in a couple of thousand kilometers.
- π Original VAG - standard of quality, but high price.
- π GKN-Spidan One of the world leaders, often goes as an original.
- π Loebro and SKF - reliable European brands with excellent reputation.
- β οΈ Febi and Mapco - decent options of the middle price segment.
When buying, be sure to check the equipment. The internal SRUS is often sold in a collection with a tripoid and a basket, but sometimes you need to buy additional locking rings and new anthers separately. Also pay attention to the condition of the slate shaft - if it has traces of corrosion or production, the installation of a new slurry can be ineffective without restoring the shaft.
- VAG Original
- GKN Spidan
- Loebro
- SKF
- Febi
- I don't know
Tools and preparation for replacement
Before starting work, you need to prepare a workplace and a set of tools. Replacing the inner CV joint with Octavia Tour requires access to the bottom of the car, so a lift or observation pit is required. If you work in a garage, make sure that there are reliable stands for the body, since it is not safe to remove the semi-axle from the gearbox without fixation.
You will need a standard set of wrenches, but pay special attention to the heads for unscrewing the hub nut and ball support mount bolts. A skipper is also needed to press the tripoid from a slither shaft, although experienced craftsmen often do with a hammer and a wooden rack. Donβt forget about penetrating lubricant (WD-40 or analogues) for processing acidified bolts.
βοΈ Preparing for replacement
Particular caution should be exercised when unscrewing the hub nut. It has a very high puff moment and often clings. Use a long collar and, if necessary, extension cords. If the nut does not lend itself, you can slightly warm it with a building hair dryer, but do not overheat the hub bearing.
What to do if the nut does not unscrew?
If the nut fails, try to spin the engine in the first gear (with the clutch off) or use an impact nut. Sometimes it helps to apply penetrating lubricant 15-20 minutes before trying to unscrew.
Step-by-step instructions for replacing the internal SRUS
The replacement process begins with the removal of the wheel and unscrewing the hub nut. After that, you need to loosen the bolts of fastening the ball support to the rotating fist to take the semi-axle aside. Be careful, do not damage the brake hose and the ABS sensor when pulling the semiaxle.
The next step is to remove the semi-axle from the gearbox. To do this, you need to carefully tuck the end of the semi-axis with a mount to remove it from the differential slats. Be prepared for the fact that a little transmission oil will leak from the checkpoint - prepare the container. After that, the semi-axle is completely free, and you can start replacing the hinge itself.
If you change only the tripoid, it must be pressed from the slit shaft of the semi-axis. To do this, fix the shaft in the vise and gently knock out the tripoid through a wooden shed. Then remove the old SRUS basket, clean the slats of the old lubricant and rust. Apply the new lubricant composition inside the basket and on the rollers of the tripoid.
The installation of a new SRUS is carried out in reverse order. It is important to properly put the locking ring on the shaft so that it securely fixes the mechanism. After assembly, put on a new anther, make sure it is not twisted, and evenly distribute the lubricant inside it. Lock the clamps using special ticks or passages.
Nuances of assembly and suspension settings
After installing a new internal SRUS, the semi-axle returns to place in the gearbox. Make sure it sits down to the point and you will hear the characteristic snap of the fixator. Next, you need to fix the ball support and tighten the bolts with the recommended moment. Do not tighten the bolts "deadly" before the wheel is installed, as the suspension should be in a natural position.
Pay special attention to tightening the hub nut. Tightening torque for Skoda Octavia Tour It is usually around 200-250 Nm, but the exact value should be seen in the technical documentation for your specific engine and year of production. After tightening the nut, be sure to install a new lock cap to protect the thread from dirt.
| Parameter | Meaning | Note |
|---|---|---|
| Wheel nut tightening torque | 200-250 NΒ·m | Depends on the engine and year of production |
| Ball-bolt tightening moment | 45-60 NΒ·m | Use a torque wrench |
| Lubrication volume in SRUS | 70-100g | Follow manufacturer's instructions |
| Wheel bolt tightening torque | 120 Nm | Cruciform puffing pattern |
After assembly, be sure to check the oil level in the gearbox. If it is not enough, add to the norm, as part of the liquid leaked when removing the semiaxis. Conduct a test exit, paying attention to the absence of vibrations and extraneous noises. If the vibration remains, perhaps the problem is not only in the SRUS, but in the balancing of the wheel or wear of other suspension units.
β οΈ Warning: Do not forget to replace the locking ring on the slate shaft when installing a new semi-axis. The old ring may not provide reliable fixation, which will lead to the loss of the semi-axis from the checkpoint.
Common replacement mistakes
Many owners Skoda Octavia Tour They have problems after self-replacement. One of the most common mistakes is the wrong installation of the anther. If you leave the folds or twist the rubber, it will quickly break, and the dirt will get inside the mechanism. It is also unacceptable to use low quality lubricants or mix different types of lubricants.
Another mistake is ignoring the state of the shaft. If the shaft slits have a production, the new SRUS will work with increased backlash and quickly fail. In such cases, it is necessary either to replace the shaft in the assembly, or to restore its surface. Also often forget about replacing the locking ring, which is critical for the reliability of the fastening.
- π« Use of inappropriate lubricant that is washed out with water.
- π« Incomplete landing of the semi-axis in the gearbox differential.
- π« Ignoring the wear of the shaft slashes when installing a new node.
- π« Incorrect tightening of ball bearing bolts without a dynamometer key.
If you are not confident in your abilities or do not have the necessary tool, it is better to entrust the work to professionals. An error in the assembly of the transmission can cost much more than the cost of services of the service center. However, if you decide to act on your own, follow the instructions and be extremely attentive to the details.
FAQ: Frequently asked questions from owners
How long does it take to replace the internal SRUS on the Octavia Tour?
On average, the replacement of the internal SRUS in an experienced master takes from 2 to 4 hours. If you do it for the first time, book more time, as there may be difficulties with unscrewing the boiling bolts and removing the semi-axis.
Can you replace only the tripoid, and not the entire SRUS collection?
Yes, technically it is possible. However, it is often more profitable and reliable to replace the entire node in the assembly, since the cost of the tripoid and basket together with the replacement work can be comparable to the price of the finished node. In addition, it is easier to ensure the correct lubrication and tightness in the collection.
Which lubricant is best for the internal slurry?
It is recommended to use specialized lubricants for SRUS containing molybdenum disulfide (MoS2). They have high adhesion and resistance to washing. Popular brands: Liqui Moly, Motul, VAG. Do not use general purpose lithium lubricants.
Why did the vibrations remain after the replacement?
Vibration can be maintained for several reasons: not fully inserted semi-axle in the differential, damaged the bearing of the hub, disturbed wheel balancing or worn another element of the suspension. It is also possible that the new SRUS has a factory defect.
Is it necessary to do a wheel alignment after replacing the CV joint?
If you have not dismantled the suspension levers and did not violate the angles of the wheel installation, the collapse-descent is not necessary. However, if you have unscrewed the bolts of lever attachment or ball supports, it is recommended to check and adjust the angles of the wheel installation.