Car suspension Skoda Fabia It is a complex system that directly affects the comfort and safety of movement. One of the most loaded elements in this system are the front arms, or rather their rubber metal hinges, known as the "A" silent blocks. Over time, rubber loses elasticity, cracks or even breaks away from the metal sleeve, which leads to the appearance of knocks, vibrations and deterioration of controllability.
Many owners Skoda Fabia They try to delay the moment of repair, writing off extraneous sounds on the poor condition of the roads. However, ignoring the problem can lead to the fact that the destroyed Bushing will damage other suspension nodes, for example, a ball support or a stabilizer rack. Timely replacement suspension elements - is not only the return of the factory smoothness of the course, but also the prevention of more expensive repairs.
Signs of wear and diagnosis of the suspension Fabia
Determine wear silent blocks You can even before visiting the station, just listening to the behavior of the car. A characteristic feature is a deaf knock when passing small irregularities or pits, which is especially noticeable at low speed. Often drivers confuse this sound with the sound of shock absorbers, but the nature of the noise is completely different.
Another indicator of problems is the deterioration of controllability. If at the entrance to the turn the car begins to โfloatโ or the steering wheel becomes too โcottonโ, most likely, the backlash in the levers has already reached a critical value. In such situations suspension geometry It is broken, which can lead to uneven wear of tires.
Visual inspection of the suspension on the lift or overpass allows you to identify the problem accurately. The rubber part of the hinge can be covered with a network of deep cracks, torn or completely absent, leaving the metal sleeve hanging inside. Rubber rupture This is a clear signal to immediately replace the part, since further operation is dangerous.
- ๐ Deaf knocks in front when passing irregularities at speeds up to 40 km / h.
- ๐ Take the car away when braking or on a flat road.
- ๐ Uneven wear of the inner or outer part of the tyre tread.
- ๐ Vibration on the steering wheel, especially on uneven asphalt.
Selection of spare parts: original or analogues?
When planning a replacement, there is a dilemma: buy original parts from the Skoda Or trust the proven analogues. Original. silent blocks They are usually supplied with a lever, which greatly increases the cost of repair. It is often easier and cheaper to buy a lever in the assembly than to try to press individual bushings.
The market offers many high-quality analogues from brands such as Lemfรถrder, TRW, Febi Bilstein or Corteco. These manufacturers are often suppliers to the conveyor, so their products are not inferior to the original in terms of resource and quality of rubber. The main thing is to avoid cheap fakes that can fall apart in a couple of thousand kilometers.
It is important to remember that in different generations Skoda Fabia (Mk1, Mk2, Mk3) uses levers with different parameters. Diameter of bushings Their design may differ, so before buying it is necessary to check the VIN code of the car. An error in the selection of a spare part will lead to the inability to install or a quick failure of the part.
- ๐ท๏ธ Original leverage: high price, but guarantee perfect compatibility.
- โ๏ธ Quality analogues (Lemfรถrder, TRW): optimal price/quality ratio.
- ๐ซ Budget brands: the risk of rapid wear and loss of manageability.
- ๐ฆ Set or separately sleeve: it is often more profitable to change the lever in the assembly.
- Separate Bushings
- Lever assembly
- Buying a used lever
- Contacting service
Preparing for replacement: tools and safety
Before starting work, it is necessary to prepare the workplace and the necessary tool. You will need a reliable jack or lift, a set of end keys and heads, as well as a powerful lever-jackto compensate for the weight of the suspension when unscrewing the bolts. Without the support of the lever, the bolts will jam and they will not be able to be twisted.
A critically important tool is a bushing removable or a powerful hydraulic press. If you plan to change only the bushings, and not the lever in the assembly, you can not do without this tool. A penetrating lubricant of the type will also be useful. WD-40 and a metal brush to clean the threads of dirt and rust.
Donโt forget about personal protective equipment: gloves and glasses. When working with suspension under the car, there is always a risk of a part or tool falling. Make sure the car is securely fixed on the supports and cannot roll or flip.
โ ๏ธ Warning: Never work under a car that is held only by a jack! Always use safety guards.
- ๐ ๏ธ A set of keys and heads (usually 13, 15, 16, 18, 21 mm).
- ๐๏ธ Industrial remover of Bushings or hydraulic press.
- ๐งด Penetrating lubricant and metal brush for cleaning.
- ๐จ Hammer and mounting shovel for dismantling old elements.
โ๏ธ Preparing for replacement
Step-by-step instructions for dismantling and installation
The replacement process begins with the removal of the wheel and the removal of the lever from the car. Unscrew the bolt of the ball support attachment and the lever mounting bolts to the body and subframe. It is important to remember or photograph the position of the bolts, as their tightening requires certain effort and consistency.
If you change the Bushings separately, the old element must be pressed out. Insert the removable in the lever and, evenly applying the force, squeeze out the worn sleeve. Clean the seat of dirt and rust, apply a thin layer of soap solution or silicone lubricant to facilitate the installation of a new part. Don't use oil When pressed, because it corrodes the rubber.
Installing a new Silent Block requires precision. Direct the sleeve strictly on the axis, using the removable mandrel. After pressing, set the lever in place, tighten the mounting bolts, but make the final puff only when the car is lowered to the ground and the wheels will be under load. This will prevent premature wear of the rubber due to twisting.
The process can take 2 to 4 hours depending on your experience and the condition of the fasteners. If the bolts are boiling, do not use excessive force, use warm-up or more penetrating lubricant. Correct tightening The bolts are the key to the durability of repairs.
- ๐ง Dismantling: unscrew the bolts, remove the lever, press the old sleeve.
- ๐งน Cleaning: carefully clean the landing place from corrosion and dirt.
- โ๏ธ Installation: pressing the new Bushing strictly in the center.
- ๐ฉ Finale: We set the lever, tighten the bolts on the loaded suspension.
What to do if the bolt does not come off?
If the bolt is boiling, try heating it with a building hair dryer or blowtorch (carefully, do not damage the rubber next to it!). Use a quality penetrating lubricant and give it time to soak up. In extreme cases, you can carefully cut the bolt with a Bulgarian, if there is a spare lever for replacement in the assembly.
Before starting work, be sure to buy new bolts of lever mounting, as the old ones often deform and are not subject to re-installation, especially if they were tightened with a dynamometer key.
Technical nuances and common errors
One of the most common mistakes is tightening the lever bolts when the suspension is in the unloaded state (when the wheel is hanging in the air). In this case, the rubber sleeve is twisted, which leads to its rapid destruction. Torque wrench It should only be used after the vehicle is lowered to the ground.
It is also important not to confuse the sides of the levers. The left and right arms often have different shapes or locations of the mounts. Installation of the wrong lever can lead to a violation of the collapse-convergence and the inability to properly adjust. Always check the markings on the details before installation.
When replacing silent blocks with Skoda Fabia It is worth paying attention to the condition of the subframe. If it has traces of corrosion or deformation, replacing the levers will not solve the problem completely. Sometimes it's necessary. subframe adjustment or replacing it to restore the correct geometry of the front axle.
| element | Typical resource (km) | Tightening torque (Nm) | Note |
|---|---|---|---|
| Bushing front | 80 000 - 120 000 | 80 - 100 (depending on model) | Tighten on a loaded suspension |
| Bushing back | 100 000 - 150 000 | 60 - 80 | Often requires replacement of the lever in the collection |
| Ball-mounting bolt | 1 time (single-time) | 40 + 90ยฐ | Mandatory replacement during dismantling |
| Subframe bolt | 1 time (single-time) | 100 + 90ยฐ | Geometry check after replacement |
โ ๏ธ Note: Use only new bolts for mounting levers and ball supports. Reuse of old bolts is unacceptable, as they can stretch and break off when loaded.
Tightening of the suspension bolts should be carried out exclusively with a loaded suspension (car on wheels), otherwise the rubber of the Bushings will be destroyed due to constant twisting.
Cost of work and economic feasibility
The cost of replacing the Bushings depends on the chosen method: the purchase of individual bushings or lever assembly. Replacing bushings requires more time and labor, which increases the cost of working in the service. On average, the work on replacing two Bushings on one lever costs from 1500 to 3000 rubles.
If you decide to replace the lever in the assembly, the cost of spare parts will be higher, but the work will take less time. For Skoda Fabia The price of the lever in the collection with Bushings can vary from 4000 to 12000 rubles depending on the brand. Save time Assurance of quality of installation often makes this option more attractive.
Additional costs may arise if you need to adjust the collapse-convergence. After replacing the suspension elements, the geometry of the wheels is broken, and without correction this will lead to rapid wear of the tires. This service usually costs about 1500-2500 rubles.
Ultimately, the decision to repair should be based on the condition of the other suspension units. If the levers are severely deformed or the ball supports are worn out, replacing only the silent blocks does not make sense. Comprehensive repair of the suspension will provide maximum resource and safety.
- ๐ฐ Work on replacing bushings: cheaper parts, more expensive work.
- ๐ธ Replacement of the lever in the assembly: more expensive parts, faster and easier work.
- ๐ Additional expenses: collapse-divergence, new bolts, lubricants.
- ๐ Bottom line: lever collection is often more profitable in time and reliability.
Is it possible to drive with a worn silent block?
Short term yes, but with caution. Long-term operation with worn-out Bushing leads to accelerated wear of ball supports, shock absorbers and tires, and can also cause loss of control at high speed.
FAQ: Frequently asked questions
How often should I change the Silent Blocks to the Skoda Fabia?
The resource of the Bushings depends on the operating conditions, the quality of the roads and the manufacturer of the part. On average, a replacement is required every 80,000 to 120,000 km of run. However, with aggressive driving or bad roads, this period can be reduced by half.
Is it possible to replace silent blocks without removing the lever from the car?
Theoretically, this is possible if you have access to the Bushing and a powerful filmmaker. However, in practice, this is extremely uncomfortable and risky. It is recommended to remove the lever completely for high-quality access and proper pressing of new bushings.
Is it necessary to do a wheel alignment after replacing the silent blocks?
Yeah, that's a must. Any interference with suspension elements that affect the geometry of the wheels (levers, Silent blocks) requires subsequent adjustment of the collapse-convergence to ensure proper handling and maintenance of the tires.
Which is better: a lever in the assembly or individual Bushings?
For most owners Skoda Fabia It is more profitable and reliable to change the lever in the collection. This saves time, eliminates pressing errors and ensures that all lever elements (including hidden defects) are new.
How to distinguish the original Bushing from a fake?
The original has a clear marking, high-quality rubber without bubbles and foreign inclusions, as well as accurate dimensions. Counterfeits often have an uneven surface, the smell of cheap plastic, and labeling that is erased or mislabeled.
Regular diagnosis of suspension and timely replacement of worn-out bushings is a guarantee of safety and comfort, as well as a way to avoid expensive repairs of other components of the car.