Transmission oil leakage from under the axle shaft is one of the most common problems that owners encounter. Skoda Fabia different generations. Ignoring this malfunction leads to rapid wear of the internal CV joint, dirt getting into the gearbox and, as a result, expensive repairs of the unit. Many car owners mistakenly believe that a leaking oil seal is a death sentence for the entire gearbox, but timely replacement of consumables solves the problem in a few hours.
Unlike changing oil or filters, working with drive seals requires certain access to the units and the availability of special tools. This is especially true for versions with a 1.4 TSI or 1.2 TSI engine, where the layout of the engine compartment can be cramped. The right approach to diagnostics and selection of spare parts will save you money and nerves in the future.
In this article we will analyze all stages of the process: from fault identification to final assembly. You will learn how to distinguish an oil seal leak from other problems, what tools are needed, and what nuances you should pay attention to when dismantling the axle shaft.
Causes of leakage and signs of malfunction
The main reason for failure of the sealing element is the natural aging of rubber. Under the influence of high temperatures, aggressive chemistry of transmission oil and constant vibration, the material loses its elasticity, cracks and no longer fits tightly to the shaft. Often the problem is aggravated by the presence of abrasive dust particles that enter the working edge of the oil seal through the boot.
Critical factor for Skoda Fabia is wear of the drive shaft itself at the point of contact with the seal. If a groove has formed on the surface of the shaft, even a new oil seal will not provide a tight seal and will begin to leak within a couple of days. In such cases, it is necessary not only to replace the rubber, but also to install a repair seal or restore the shaft.
The first warning sign is an oil stain on the asphalt under the front wheel after parking. If you notice that the oil level in the gearbox is dropping faster than normal, you must immediately check the condition of the seals. The problem may also be indicated by a characteristic knocking or play when moving, caused by a lack of lubrication in the CV joint.
โ ๏ธ Attention: Never add oil to the gearbox without eliminating the cause of the leak. This is only a temporary measure that will lead to overflow, oil foaming and failure of the valve body or bearings.
Selection of spare parts and tools
For quality repairs, it is extremely important to choose the right part number. On Skoda Fabia Oil seals of different diameters are installed depending on the generation of the car and the type of gearbox (manual or DSG). An error in selection will lead to impossibility of installation or repeated leakage.
- ๐ง Original oil seal from SKODA โ guarantees ideal geometry, but is much more expensive than analogues.
- ๐ง Quality substitutes: brands Corteco, Elring, Goetze or Vic often superior to the original in rubber quality.
- ๐ง An oil seal kit complete with a dust ring, if provided for by the design of your vehicle.
The tools you will need are a standard set of sockets, a wrench, a jack and safety stands. A specific tool is an axle shaft retaining ring remover and a mandrel for pressing in a new oil seal. Using a hammer directly on the oil seal body is unacceptable, as this will lead to its deformation.
It is also worth purchasing high-quality transmission oil for topping up, since when dismantling the axle shaft, some of the fluid will inevitably leak out. Check the specifications in the owner's manual to ensure you do not fill with the wrong fluid.
- 1.2 MPI
- 1.4 MPI
- 1.2 TSI
- 1.4 TSI
- 1.6 MPI
Preparing the car for repair
Before starting work, it is necessary to ensure that the vehicle is securely secured. Raise the front of the car on a lift or use a jack with safety stands under the sills. Remove the front wheels to gain access to the hubs and suspension components.
If you have Skoda Fabia With the 1.4 TSI engine, it may be necessary to remove the crankcase guard and, in some cases, the right engine mount or subframe to gain free access to the inner CV joint. It depends on the year of manufacture and the specific modification of the suspension.
- ๐ ๏ธ Unscrew the wheel mounting bolts and remove the wheel.
- ๐ ๏ธ Clean the area around the drive of dirt and sand with a brush so that dirt does not get into the box when removing the semi-axle.
- ๐ ๏ธ Check the condition of the anthers of the SRUS - if they are torn, they will also have to be replaced.
โ๏ธ Preparing to replace the oil seal
The process of dismantling the axle shaft
Start by loosening the nut of the hub that holds the semi-axle. This should be done before the car is lifted so that the wheel does not scroll. Use a long collar and considerable effort, as the nut often twists with a big tightening moment.
After removing the wheel and weakening the nut, unscrew the bolts of the ball support attachment to the swivel fist or press the hub from the swivel fist. Carefully pull the swivel fist aside to free the inner scarf from the gearbox. Do this smoothly so as not to damage the differential ointment.
It is important to prevent distortion of the semi-axis, as this can damage the internal parts of the gearbox or the oedel. If the semi-axis does not come out, check if the locking mechanism is blocked inside the differential. In some cases, pressing the brake pedal is required to fix the shaft.
Common mistakes during dismantling
Often drivers try to knock out the semi-axle with a hammer through a wooden spacer. This can lead to the destruction of the hub bearings or damage to the gearbox body. It is better to use a special remover or carefully pull the lever.
Replacement of osel and pressing
After removing the semi-axis, you will see an old gum. Carefully put a screwdriver on it and remove it. Be extremely careful not to damage the seat in the body of the gearbox. Any scratches on the metal can cause a new leak.
Clean the seat with solvent and wipe dry rags. Check the drive shaft for bullies or wear. If the shaft is in perfect condition, you can install a new omentum. Make sure that the working edge of the omentum is lubricated with fresh oil before installation.
For pressing, use a mandrel of a suitable diameter or an old omentum. The blows must be applied strictly in the center so that the oal enters perpendicular to the shaft. Do not allow the oil to be distorted during installation, otherwise it will start to pass the oil through several thousand kilometers.
Apply a small amount of transmission oil to the working edge of the oedeel before installation. This will ensure smooth running of the shaft at the first start and prevent dry friction.
Assembly and performance testing
Set the semi-axle in place, making sure that the locking ring is safely entered into the slot of the differential. Attach a swivel fist to the ball support and tighten the bolts with the required moment. Set a new hub nut and tighten it with a dynamometer key.
Check the oil level in the gearbox. If the level is low, add the oil to normal. Start the engine and let it work at idle speeds. Turn on the transmissions and check for no leakage in the area of the installation of the osteoil.
Take a test trip for a short distance. Pay attention to the absence of knocks during acceleration and braking. After the trip, look under the car again and make sure the oedeme does not leak. If all is well, you can install engine and wheel protection.
| Parameter | Meaning | Comment |
|---|---|---|
| Hub nut tightening torque | 180-200 Nยทm | Mandatory use of dynamometer |
| Ball-bolt tightening moment | 45-60 Nยทm | Depends on year of manufacture |
| Type of oil in the checkpoint | 75W-90 | Sheet G 052 171 |
| Opening hours | 1.5 - 2 hours | For one wheel |
Proper pressing of the oedeum without distortions and the use of high-quality transmission oil is the key to the durability of repair.
Frequent questions and nuances of service
Many owners Skoda Fabia They wonder if they need to change both coils at once if only one leaks. Although technically only defective can be replaced, experienced craftsmen recommend changing both elements. This is due to the fact that the resource they have the same, and the second oedle can fail in a couple of months.
Another frequent question concerns the need to remove the gearbox. In 90% of cases, this is not required. It is enough to remove the half axle on one side. However, if the oede is on the inside of the differential and access to it is difficult, partial disassembly or removal of the subframe may be required.
How much does it cost to replace the silk in the service?
The cost of working in a specialized service varies from 1500 to 3000 rubles per side, depending on the region and the complexity of access. The original oil oil costs about 500-1500 rubles, analogues are cheaper.
Is it possible to use sealant when installing the oil seal?
In most cases, the use of a sealant is not required and even harmful. Salmon Skoda Fabia They are designed for dry planting or installation with a minimum amount of oil. Excess sealant can get inside the box and clog the oil channels.
How often should I check the condition of the scalp?
It is recommended to visually inspect the condition of the oil oils at each oil change in the checkpoint or during planned maintenance. If you notice traces of oil on the body of the gearbox or on the inside of the wheel, diagnosis is mandatory.
โ ๏ธ Note: If after replacing the oedeum you notice that the oil is still leaking, check the condition of the ventilation valve (sapoon) of the gearbox. Clogged sapoon creates excess pressure that squeezes the oil through any seals.
Regular maintenance and attention to small details will allow you to avoid serious breakdowns. Replacing the drive coil is not only a cost savings, but also a guarantee of traffic safety. Do not delay repairs if you notice the first signs of malfunction.