Silentblock, or rubber-metal hinge - a node that consists of two metal bushings and an elastic insert between them, but design changes are also possible depending on the specific purpose of their use.
In the joints, due to the rubber-metal hinge, negative vibrations and rattling are damped. It is installed in various places of the suspension that experience more wear. As a result, silent blocks must be replaced more often than consumable suspension parts (for this, a silent block remover is used). These are front and rear suspension arms. Silent blocks are also used for elastic mounting of shock absorbers, jet rods and anti-roll bar.
Service life
The duration of the life of the silent block depends on a number of factors: on the degree of stress experienced by the car's suspension; on the workload of the part on which it is installed, as well as on the quality of the silent block itself. It must be remembered that the replacement of these parts must occur symmetrically: when changing the silent block of the right lever, you must simultaneously replace it on the left. Otherwise it willpremature wear of parts due to uneven load on suspension parts.
You can also visually notice the deterioration of the silent block. It is necessary to control the condition of the internal filler: if the rubber or polyurethane elastic insert has dried out, cracks or delaminations have appeared on it, then the silent block must be changed immediately!
If the car starts to pull away at high speed, there are additional problems with control, then, perhaps, the worn silent block became the reason for this. The universal silent block remover will help you do everything yourself.
Do you have a VAZ car? So, you need a special puller for VAZ silent blocks.
Uneven tire wear can also indicate premature wear of the rubber-to-metal joint. Inspection of silent blocks in the conditions of Russian roads should be carried out every 50 thousand km, and replacement on suspension units experiencing the greatest deformation - every 100,000 km.
Process Features
The silent block is replaced by a special puller, which smoothly presses it out of the common holder. Knocking out a part with improvised means can lead to negative deformations, as well as unnecessary mechanical stress at the welding points. That is why you need to use a silent block puller. Before installing a new part, the working surface of its clip must be cleaned of dirt and lubricated.
Possibleproblems with pressing a new silent block into the working clip of the part without special tools - replacing with your own hands often damages the elastic insert. As for work in the engine or gearbox, it is highly recommended not to act on your own here. It is better to turn to competent specialists with experience in such work.
Why you should use quality parts
The use of substandard products can lead to rapid wear and breakage of suspension components. The tension of the chassis will increase, and the service life will be significantly reduced if the elastic filler is too soft or too hard.
Recently, polyurethane fillers with a long service life are more popular, but they are quite expensive compared to simple rubber. Their purchase is justified only in cases of uniform wear of the car suspension elements, while the mating parts are in good condition. This will ensure the smooth running of the vehicle and the long life of the undercarriage elements under constant load.
