Any owner Škoda Fabia 2 Over time, it faces the need to maintain the chassis, especially if the car’s mileage has exceeded 100,000 kilometers. One of the most common transmission problems is wear on the internal constant velocity joint, often called the internal constant velocity joint. CV joint. This part is responsible for transmitting torque from the transmission to the axle shaft, allowing the wheels to turn and move up and down when the suspension operates.
Ignoring the symptoms of a malfunction can lead to critical consequences: jamming of the mechanism, rupture of the boot and dirt getting into the lubricant, which will ultimately damage not only the hinge itself, but also the gearbox. Unlike the outer unit, which breaks more often due to impacts, the inner CV joint suffers from high axial loads and lack of lubrication. The internal CV joint on the Škoda Fabia 2 often fails precisely due to the destruction of the boot and moisture getting inside the grenade, which requires immediate intervention.
In this article we will analyze in detail the process of diagnostics, selection of quality spare parts and step-by-step instructions for replacing the unit yourself. We'll also look at common mistakes newbies make and give recommendations on the tools needed for quality repairs.
Signs of malfunction and diagnosis of the internal CV joint
Identifying the problem early is critical to avoid costly transmission repairs. The main symptom of wear on the internal assembly is Škoda Fabia 2 - these are characteristic jerks and vibrations during sudden acceleration or starting to move, especially in first or second gear. Unlike the external CV joint, which makes clicks when turning, the internal one often “informs” itself with a dull knock or vibration transmitted to the body.
If you feel that when you press the gas pedal the car jerks, and when you release the gas the vibration disappears, this is a sure sign that tripoid (tripod) or needle bearings inside the unit have wear. It is also worth paying attention to the condition of the boot: if there are cracks on it or it is torn, the lubricant has already flown out and the part is running dry.
For an accurate diagnosis, you can carry out a simple test: turn off the engine, put the car on the handbrake and, having engaged first gear, slowly release the clutch, lightly pressing the gas. If you feel strong vibrations in the floor area or under the hood, the problem is almost certainly in the inner CV joint. These symptoms should not be confused with a faulty clutch or engine mount, so a visual inspection of the suspension is mandatory.
- 🔍 Characteristic knocking or vibration when suddenly starting from a standstill
- 🛠️ Steering wheel jerking when accelerating
- 🔧 Extraneous sounds when shifting gears under load
- 🧪 Presence of dirt and grease around the inner boot
⚠️ Attention: Do not confuse inner CV joint vibration with wheel imbalance. Vibration from the wheel increases at certain speeds (usually 80-120 km/h), while vibration from the CV joint appears precisely during acceleration and load on the transmission.
Selection of quality spare parts and tools
Saving on transmission parts is a direct path to repeated repairs after a couple of thousand kilometers. For Škoda Fabia 2 There are many offers on the market, from cheap analogues to original spare parts. The original (VAG) will always be more reliable, but costs much more. Good alternatives are premium brands such as Loebro, Spidan or GKN, which are often delivered to the conveyor.
When choosing, pay attention to the package: the ideal option is to buy the entire axle shaft assembly, as this simplifies the work and ensures that the outer grenade and hub bearing are also in order. However, if you only want to replace the internal assembly, make sure the kit includes a new boot, circlips, and good quality lubricant.
You will need a specific set of tools for the job, since regular wrenches may not be able to handle tightened nuts. Pay special attention to the snap ring remover and the device for pressing the CV joint onto the axle shaft. Without a special tool, you can damage the seat in the gearbox or the axle shaft itself.
- 🛠️ Set of sockets and ratchets (16, 17, 30, 32, 36 mm wrenches)
- 🔨 Powerful hammer and pry bar for pressing out
- 🧰 Special puller for inner CV joint retaining ring
- 🛢️ Container for draining oil from the gearbox (if necessary)
⚠️ Attention: Never try to knock out the inner CV joint from the gearbox with a hammer directly on the body! This is guaranteed to damage the differential seal, which will lead to loss of oil and subsequent transmission repairs.
- Original VAG
- Loebro
- Spidan
- GKN/Knoll
- Cheap analogue
Preparing the vehicle and removing the axle shaft
Before starting work, it is necessary to ensure safety and convenient access to the suspension components. Raise the front of the car on a lift or use secure stands under the body, as you will have to work under the car. Be sure to loosen the hub nut before you lift the wheels, otherwise the axle shaft will spin.
Remove the front wheel and unscrew the hub nut, which often has a torque of more than 200 Nm. If you don't have a long range torque wrench, use a long lever and perhaps a helper to apply pressure to the brake pedal. After removing the nut, you need to unscrew the bolts securing the ball joint to the steering knuckle to free the hub.
Now you need to press the axle shaft out of the hub. Carefully move the steering knuckle to the side so that the axle shaft splines disengage. Be prepared for the fact that the axle shaft may become stuck, and you will have to carefully pry it off with a mounting blade without damaging the hub seal. After this, you need to press the inner CV joint out of the gearbox.
☑️ Preparing to remove the axle shaft
To press out the inner CV joint from the gearbox differential, it is best to use a special puller. If it is not there, you can carefully pry the CV joint housing with a mounting blade between the gearbox housing and the CV joint flange, applying uniform force. It is important not to damage the seal and differential housing.
- 🔧 Use a puller to safely remove the axle shaft from the differential
- 🛡️ Place a container under the gearbox as oil may leak when removed.
- 🔩 Clean threaded connections before unscrewing to prevent dirt from getting inside
- 📸 Take photographs of the location of the bolts and hoses for ease of assembly.
What to do if the axle shaft does not come out of the hub?
Sometimes the axle shaft gets stuck on the splines. Do not hit it with a hammer, this may damage the wheel bearing. Use a puller or gently tap the end of the axle shaft with a rubber mallet while holding it in a vice.
Replacement of the inner CV joint and pressing
After the axle shaft is removed from the vehicle, it must be prepared for replacing the internal assembly. If you are replacing only the grenade and not the entire axle shaft assembly, you will need to press out the old CV joint. This is done using a special puller or carefully through a vice, trying not to damage the mounting splines on the axle shaft itself.
Clean the splined part of the axle shaft from old grease and rust using a wire brush. Apply new grease, which usually comes with a new CV joint, evenly distributing it along the grooves. Install the new boot on the axle shaft, first installing the retaining ring. It is important to check the condition of the retaining ring on the inside of the CV joint - it must be intact and provide reliable fixation.
Pressing a new inner CV joint onto the axle shaft requires precision. Use a mandrel of a suitable diameter to hit the end of the CV joint housing with a hammer, and not the boot or internal parts. After installation, make sure that the CV joint is completely seated until the lock ring clicks.
Before installing a new boot, lubricate its inner surface with silicone grease so that it does not twist or tear when being placed on the CV joint housing.
Tighten the clamps on the anther. First tighten the inner clamps, leveling the pressure inside, then the outer. Use special pliers for clamps or latch clamps to ensure tightness. A poorly tightened anther will lead to a rapid failure of the new part.
- 🔨 Press the SRUS strictly in the center, avoiding distortions
- 🛢️ Use only the recommended lubricant for tripoid shrubs
- 🔒 Check the reliability of locking the locking ring before installation
- 🧼 Remove excess lubricant from the outer surface of the anther
⚠️ Warning: If you feel that the SRUS is not landing to the end, do not use excessive force. Most likely, the locking ring is deformed or does not coincide with the groove on the shaft. Take it apart and check for a match.
Proper pressing of the internal SRUS is 50% of the success of the repair. Incomplete landing will lead to the fact that the part will fly out of the gearbox at the first load.
Semi-axis set back and final checks
The assembly is done in reverse order. Carefully insert the semi-axle into the gearbox differential until a characteristic click, which will confirm that the locking ring has entered the groove. This is a critical point: if you don’t hear the click, the semi-axle may pop out when driving and the car will lose traction.
When connecting the semi-axis with the hub, make sure that the slits coincide without distortion. Hit the semi-axle with light blows of the hammer through the mandrel or mounting blade until it rests in the locking ring of the hub. Tighten the nut of the hub with the recommended moment, fixing the hub from scrolling.
After installing all the nodes, you need to check the level of oil in the gearbox. When pressing the semi-axis, part of the oil will inevitably leak out. Add the transmission oil to normal using a probe or control hole, depending on the design of the gearbox on your Škoda Fabia 2.
How to check if the installation is correct?
After installation, spin the wheel with your hand, it should rotate freely, without jamming. When the wheels are not in place, there should be no vibrations.
Conduct a visual inspection of all joints, make sure that the anthers are not twisted and have no gaps. Start the engine, drive a short distance, make a few turns and check for no extraneous noise. Only then can the work be considered complete.
- 🔊 Listen to the work of the checkpoint on singles and in motion
- 🛑 Check if the oil is leaking from the differential oil.
- 🚗 Test your car in different driving modes
- 📝 Write down the replacement date and mileage for future maintenance
| Parameter | Value for Škoda Fabia 2 | Recommendation |
|---|---|---|
| Hub nut tightening torque | 200 Nm + a doorway | Use a torque wrench |
| Lubricant type | Lithium-based oil (tripoid) | Do not mix with other types |
| Oil volume in the PPC (ICP) | 1.7 - 2.0 litres | Test the level with a probe. |
| Type of clamps |