When a characteristic knock or beating appears in the steering wheel when driving over uneven surfaces, many car owners immediately run to change the entire lever assembly. However, a competent approach to repair involves diagnosing the condition of rubber-metal hinges and their spot replacement. This allows you to significantly save your budget without losing the quality of the repair, if the lever itself does not have cracks or serious metal deformations.
Signs of wear and diagnostics of suspension
The first and most obvious signal that silent blocks require replacement, extraneous sounds appear. Usually these are dull metallic knocks, which are clearly audible when driving over speed bumps or potholes at low speed. If you press the brake pedal and feel a jerk and the steering wheel moves slightly, this is a sure sign that the rubber bushings have lost their elasticity and cannot hold the lever in the correct position.
In addition to acoustic signals, pay attention to the behavior of the car on the road. A through-the-hole backlash in the front levers leads to the fact that the car begins to “demolish” when moving in a straight line, and the steering wheel becomes less informative. The driver has to constantly adjust the trajectory, which causes increased fatigue. It is also worth checking the condition of the wheels - uneven wear of the tread, especially "waves", often indicates a broken suspension geometry due to worn elements.
Visual inspection of the suspension on the pit or lift will confirm your suspicions. You need to carefully inspect the rubber bushings for cracks, tears or complete detachment of the rubber from the metal insert. Sometimes the rubber looks whole on the outside, but inside it has already turned into a crumb. Critical wear is a condition where the metal insert rotates freely inside the rubber shell or has visible gaps.
- 🔊 Deaf knocks and creaks when passing irregularities
- 🎡 Luft steering wheel and instability of movement in a straight line
- ⚙️ Uneven and rapid wear of tyres
⚠️ Attention: Ignoring the wear of the Bushings can lead to the destruction of the ball support or damage to the shock absorber, since excessive load begins to act on these nodes.
Selection of components: original or analogues
The auto parts market offers many options for Skoda Octavia A5. Original parts from VAG Volkswagen Audi Group is always a benchmark for quality, but their cost can be quite high. Often under the brand Škoda hide products from large manufacturers, such as: Lemförder or TRWwho are the suppliers of the conveyor. When you purchase the original, you pay for a guarantee of conformity and a long service life, but overpayment is not always justified.
If the budget is limited, you can consider qualitative analogues. Among the popular brands, it is worth highlighting Febi Bilstein, Sasic and Mapco. These companies produce products that are not inferior to the original resource, but cost 30-40% cheaper. However, when choosing analogues, it is important to be careful: the market is flooded with low-quality counterfeits. Cheap Chinese Bushings can last only a couple of thousand kilometers, turning into a piece of rubber.
When buying, be sure to check the labeling and packaging. The original parts should be clearly engraving, high-quality packaging with holograms and logos. For front control arms Octavia A5 there are different types of Bushings depending on the year of production and the type of suspension (conventional or sports). Make sure you take the part for your modification by checking the catalog numbers.
- 📦 Check the integrity of the package and the presence of protective holograms
- 🔢 Check the VIN code of the car with the catalog number of the spare part
- 🛠️ Give preference to conveyor brands (Lemförder, TRW)
- Original (VAG)
- Lemförder
- Febi/Sasic
- Cheap analogue
Preparatory work and necessary tools
Before starting work, you need to prepare the workplace and all the necessary tools. To remove and install silencing blocks you will need a powerful jack And reliable stands, as the car will have to be lifted. A standard set of keys will not be enough, since the nuts on the levers often sour and require considerable effort to unscrew. It is necessary to puller for Bushings or powerful hydraulic press.
The process of replacing it without special equipment can become torture. Many car owners try to knock out old bushings with a sledgehammer, which often results in damage to the lever itself or deformation of the metal. Use of the hydraulic press Or a professional filmmaker allows you to gently squeeze out the old part and press the new one without unnecessary effort. If you do not have access to the press, it is better to use the services of a specialized service station.
You will also need penetrating lubricant (type WD-40) for pre-treatment of threaded joints, a metal brush and rags. Don't forget to prepare. torque wrenchSince tightening of the bolts of the levers requires exact observance of the tightening moment. Ignoring this requirement can lead to rapid destruction of the thread or, conversely, to the fact that the nut will unscrew on the go.
☑️ Tools for replacing silent blocks
⚠️ Warning: Never try to unscrew the nuts of the lever mount while the car is on the ground and the wheels touch the surface. This can lead to the lever rolling and the inability to unscrew the bolt.
Step-by-step instructions for replacing silent blocks
We start with lifting the car and removing the wheel. After that, it is necessary to loosen the nut of the ball support, but not to unscrew it completely so that the lever does not fall. Then we unscrew the bolts of the lever attachment to the subframe. Here it is important to remember or photograph the position of the lever, so that nothing is confused during the assembly. If the lever does not lend itself, treat the connections with penetrating lubricant and give it time to act.
When the lever is removed, we begin to squeeze the old Bushing. Set the lever in the press and gently squeeze the old sleeve. If you use the removable in garage conditions, make sure the supporting surfaces do not damage the metal of the lever. After extraction, carefully examine the seat - it should be clean, without rust and burrs. Any irregularity can lead to improper installation of a new part.
Pressing a new Bushing requires special care. It is important to ensure that the sleeve enters smoothly, without distortions. Usually, new parts have labels indicating the direction of installation. Do not try to press the part with a hammer.If it does not go by hand, use only a press. After installation, make sure that the rubber part is not twisted and has no visible damage.
Nuances of pressing
When pressing a new sleeve, make sure it sits to the point. If there are technological holes on the sleeve, they should coincide with the holes in the lever for the fixation pins. Errors in the direction of installation will lead to rapid wear.
- 🔧 Carefully remove the lever, previously weakening all mounts
- ⚙️ Use a press to remove old and install new bushings
- 🧹 Clean the seat of dirt and rust before installation
The main secret of a quality replacement is the use of a hydraulic press. Attempts to knock out the bushings with a sledgehammer often lead to deformation of the lever and the need for its complete replacement.
Difficulty in installation and tightening
The most difficult stage is often the return of the lever to place and the final tightening of the bolts. The fact is that Silent blocks work effectively only when they are loaded. If you tighten the bolts of the lever while the car is hanging on the jack, the rubber will be twisted into an unnatural position. This will lead to the fact that when driving the rubber will quickly collapse, and the car will ride with a characteristic knock.
For proper installation, it is necessary to lower the car so that the wheels rest on the ground, but the weight of the machine did not press on the suspension completely (you can leave some of the weight on the jack). Only in this position, when the lever is in the working position, should finally tighten all bolts with the moment specified in the technical documentation. For Skoda Octavia A5 The time of tightening of the lever bolts is usually about 100-120 NmBut the exact data must be checked by the service book.
After installing all the bushings and tightening the fasteners, be sure to perform a descent-collapse. Any interference with the geometry of the suspension violates the angles of the wheels. Without an adjustment procedure, you risk quickly “eating” new tires and getting unstable handling. The service will check not only the angles, but also the general condition of the suspension, since when replacing some elements, problems with others are often detected.
Before the final tightening of the lever bolts, ask the assistant to sway the car up and down. This will help the Bushings to take a natural position before fixing.
Torque and Compatibility Chart
Below is a summary table with the main parameters that must be considered when repairing the suspension. Octavia A5. This data will help to avoid errors in the assembly. Please note that the timing of the puff may vary slightly depending on the year of production and engine type, so always check with official data.
| Suspension element | Tightening torque (Nm) | Note |
|---|---|---|
| Bolt securing the lever to the subframe | 100 + 90° (Trust) | Tighten under load |
| Bolt mounting lever to swivel fist | 100 N·m | A new nut is required |
| Ball joint nut | 45 Nm + 90° | Use a new locknut |
| Anti-roll bar bolt | 25 Nm | Check the condition of the bushings |
⚠️ Note: The use of old nuts and bolts when replacing silent blocks is strictly prohibited. The fastener, subjected to load, may have hidden defects and cannot withstand repeated tightening.
FAQ: Frequently asked questions from owners
Can you replace only one silent block on the lever?
Technically, this is possible, but it is highly discouraged. If one Bushing is worn, then the second one is also working in extreme conditions and will soon fail. It is better to change both at once so as not to return to the repair in a couple of months.
How long do the new solar blocks on the Octavia A5 run?
When using high-quality parts (original or Lemförder), the resource ranges from 80 to 120 thousand kilometers. However, on Russian roads with poor surfaces, this period can be reduced to 40-60 thousand kilometers.
Is it necessary to do a wheel alignment after replacing the silent blocks?
Yes, definitely. Any removal of the arms changes the suspension geometry. Without adjusting your wheel alignment, you risk ruining your new tires and losing vehicle control.
What to do if the lever bolt does not come off?
Try heating the connection with a torch (carefully so as not to damage the rubber), pour plenty of penetrating lubricant and use an extension lever. In extreme cases, you may need to cut the bolt with a grinder.
Why did the knock remain after replacing the silent blocks?
This may mean that the problem is not in the silent blocks, but in other components: shock absorbers, ball joints or steering ends. It is also possible that the new parts were installed incorrectly or with improper tightening technology.