Car suspension Skoda Octavia A5 is subjected to significant loads, especially in the conditions of domestic roads. One of the most common problems that owners of this model face is the wear of the rubber-to-metal joints - the silent blocks of the front control arms. When rubber loses its elasticity or delaminates, this leads to knocking noises, the car pulling to the side and accelerated tire wear.
Many car owners are afraid to take on this work themselves, believing that the replacement requires special press-type equipment and a lift. In fact, if you have a basic set of tools and the correct sequence of actions, replacing the silent blocks of levers Octavia A5 quite doable in a garage. This will not only save a significant amount on car service costs, but also completely control the quality of the installed spare parts.
Diagnostics and selection of components
Before proceeding with disassembly, you must be sure of the malfunction. Owners often confuse the knocking of silent blocks with problems with stabilizer struts or ball joints. For an accurate diagnosis, it is recommended to use a pry bar: lift the lever, resting on its lower part, and swing it. If you hear a characteristic creak or see play at the junction of rubber and metal, the element requires replacement.
When choosing new spare parts, you should pay attention to the manufacturer. Original parts Skoda are usually marked VAG and have a high resource, but are not cheap. Branded products are often used as an alternative. Febi Bilstein, Corteco or Lemforder.
There are two main approaches to repair: replacing the entire lever assembly or replacing only the silent block. The first option is simpler and faster, as it does not require complex pressing, but is more expensive. The second option is more economical, but requires special tools. If the lever does not have visible mechanical damage, metal cracks or deformations, it is wiser to replace the rubber-metal hinge.
Necessary tools and workplace preparation
To carry out the work, you will need a lift or inspection hole, since without access to the lower part of the car it is impossible to complete the task. The tool must include a set of sockets and ratchets, including extensions, since the lever mounting bolts are often located in hard-to-reach places. A powerful pry bar and, preferably, a hydraulic jack to create a stop will also come in handy.
The main tool for the job is a silent block remover. This can be either a specialized kit or a homemade design made from a bolt, nuts and pipes of a suitable diameter. Without this device, it is almost impossible to remove the old hinge and press in a new one, especially considering the tight fit of the part in the lever body. Also prepare a penetrating lubricant such as WD-40 for processing threaded connections.
Don't forget about personal protective equipment and clean rags. Suspension arms are often heavily contaminated with road grime and chemicals, which can get on your hands or eyes when removed. Before starting work, be sure to clean the joints from dirt so that debris does not get inside the threads or the seat of the new silent block.
β οΈ Attention: Never try to knock out a silent block with a hammer or impact tool. This will inevitably lead to deformation of the seat in the aluminum lever body, after which the new element will not be installed tightly, which will cause rapid failure.
- Every 2 years
- When knocking sounds occur
- Once every 5 years
- Never checked
The procedure for dismantling the old lever and silent block
The removal process begins with loosening the bolts securing the lever to the subframe and steering knuckle. It is important to note that you need to finally unscrew the bolts securing it to the subframe only after the wheel has been removed and the lever has been slightly raised. If you do this right away, the lever may hang on the tie rod or ball joint, which will make further manipulations difficult.
After removing the lever from the car, it must be securely fixed in a vice. Here you will need to be careful not to damage the aluminum alloy. Use wooden spacers between the vise jaws and the lever body. Next begins the most labor-intensive stage - pressing out the old silent block. To do this, a puller is installed, and by rotating the nut, pressure is created to push the sleeve out of its seat.
If the old silent block does not give in, you can slightly heat its outer part with a hair dryer or blowtorch, but be extremely careful not to melt the lever itself. When heated, rubber becomes softer and comes out easier. After removing the bushing, it is necessary to thoroughly clean the seat from rubber residues and corrosion with a wire brush.
βοΈ Removing the lever
Installation of new elements and pressing nuances
Before installing a new silent block, make sure that its dimensions and design fully correspond to the original. Pay attention to the installation direction: many silent blocks have Octavia A5 There is an internal bushing that must be oriented a certain way relative to the lever. There are often marks or tabs on the joint body to indicate the correct position.
For pressing, use the same puller as for dismantling. Lubricate the outer surface of the silent block and the seat with soap solution or special silicone grease. Do not use oil or lithol as they may corrode the rubber over time. Slowly rotating the puller nut, press the hinge all the way, making sure that it fits in smoothly, without distortion.
If you feel that a part is stuck, stop and check the alignment. Once fully installed, make sure that the lever rotates freely on the inner bushing if it is not filled with glue (depending on the type of construction).
Features of the front levers of the Skoda Octavia A5
The front levers of this model often have a feature: one of the silent blocks has an oval hole for adjusting the wheel alignment. When installing, do not forget to check which direction it is oriented so as not to disturb the suspension geometry.
Installing the lever on the car and tightening the fasteners
After replacing the silent blocks, the lever is installed in place. First, insert the subframe and steering knuckle bolts, but do not tighten them all the way. The lever should be able to move slightly. This is critically important, since the final tightening of the bolts is carried out only under load, that is, when the car is on its wheels.
Lower the vehicle to the ground so that the wheels touch the jack stands without the weight of the vehicle being transferred entirely to the suspension, or use a rolling jack under the lower control arm to simulate the working load. In this position, you must finally tighten all the fastening bolts to the recommended torque. For subframe bolts, the torque is usually approx. 80 NΒ·m + turn 90 degrees, but itβs better to check the official data.
After tightening, check for any distortions or play. If you have changed the silent block on the lever that is involved in adjusting the camber, you must visit a wheel alignment stand. Even a slight misalignment can lead to uneven tire wear and unstable vehicle behavior on the road.
| Suspension element | Recommended tightening torque (Nm) | Additional action |
|---|---|---|
| Bolt for fastening to subframe | 80 + 90Β° | Tighten under load |
| Ball joint bolt | 45 + 90Β° | New self-locking nut |
| Stabilizer bolt | 15 | With sleeve nut |
| Wheel bearing nut | 250 | Tighten by weight |
The final tightening of the lever bolts should be done only when the car is on wheels or the suspension is loaded, otherwise the rubber of the silent blocks will twist and quickly collapse.
Common mistakes and how to avoid them
One of the most common mistakes is trying to replace the silent block without removing the lever. While this is theoretically possible with a huge puller and access, the risk of damaging other suspension components or installing the part incorrectly is too high. Removing the lever allows you to thoroughly clean the seats and ensure the correct installation geometry.
Another mistake is using the wrong lubricants. Some craftsmen use motor oil or grease to facilitate pressing. This is categorically false, since oils destroy the rubber structure, causing it to swell and delaminate. Use only neutral lubricants designed for use with rubber.
Ignoring the condition of other elements when replacing silent blocks is also unacceptable. If the arm was removed due to knocking, check the ball joint and stabilizer bushings. Often these parts wear out at the same time. Saving on related spare parts can lead to the fact that after a couple of thousand kilometers you will have to disassemble the suspension again.
β οΈ Attention: If after replacing the silent blocks there is a knocking sound when driving over small irregularities, check that the bolts are tightened correctly. Often the reason lies not in the quality of the part, but in a violation of the final tightening technology.
Before starting work, take a photo of the location of the levers and bolts on the phone. This will help avoid confusion if you have several different types of levers or a non-standard mounting pattern.
FAQ: Answers to frequently asked questions
How long does it take to replace silent blocks on an Octavia A5?
If you have experience and the right tools, replacing one silent block takes from 1 to 1.5 hours. If you are doing this for the first time and working alone, allow about 3-4 hours for the process, including preparation and finding the necessary keys.
Is it possible to replace the silent block without removing the lever from the car?
Theoretically, this is possible if there is access to the puller and the lever is not too bent. However, in practice this is extremely inconvenient due to limited space and the risk of damaging the CV joint boots or other elements. Removing the lever is a more reliable and safer option.
Do I need to do a wheel alignment after replacement?
If you changed the silent block on the front arm, which is responsible for the suspension geometry (usually the rear silent block of the front arm), then wheel alignment is required. Even a slight shift of the lever changes the wheel alignment angles, which affects handling and tire wear.
What tools are needed for pressing out without a professional puller?
You can make a homemade press from a powerful bolt (M16 or M20), two nuts, a wide washer and a piece of pipe whose diameter is slightly smaller than the seat. The principle of operation is the same as that of a professional puller: the nut is tightened, creating a force to squeeze out the sleeve.
What to do if the lever mounting bolt is stuck?
Apply penetrating lubricant liberally to the threads and allow it to sit (at least 15-20 minutes). You can gently heat the bolt head with a torch, but do not overheat the aluminum arm. If the bolt does not budge, use an impact driver or a special bolt puller to remove it from its place.
Replacing silent blocks with Skoda Octavia A5 is a job that requires attention to detail and adherence to technology. A correctly performed replacement will return the car to its former smooth ride and safety. Do not skimp on the quality of spare parts and do not neglect the final tightening under load, and then the suspension will last a long time.