Silent block, or rubber-metal hinge - a unit that consists of two metal bushings and an elastic insert between them, but structural changes are also possible depending on the specific intention of their use.
In connections due to the rubber-metal joint, damping of negative vibrations and rattles occurs. It is installed in various places of the suspension experiencing more wear. As a result, the replacement of the silent blocks must be done more often than the consumables of the suspension (for this, use the silent block remover). These are the front and rear suspension arms . Silent blocks are also used for elastic mounting of shock absorbers, jet rods and anti-roll bar.
Terms of service
The length of the life of an silent block depends on a number of factors: the degree of stress experienced by the vehicle's suspension; from the workload of the part on which it is installed, as well as from the quality of the silent block itself. It must be remembered that the replacement of these parts must occur symmetrically: changing the silent block of the right lever, at the same time you need to replace it with the left one. Otherwise, there will be premature wear of the parts due to the uneven load on the suspension parts.
It is possible to notice the deterioration of the silent block and visually. It is necessary to control the condition of the internal filler: if the rubber or polyurethane elastic insert has dried up, cracks or delaminations appear on it, then the silent block must be changed immediately!
If the car starts to lead away at high speed, additional control problems appear, then perhaps the worn bushing was the cause of this. The silent block remover universal will help you do everything yourself.
Do you have a VAZ car? So, you need a special remover of silent blocks VAZ.
Uneven tire abrasion can also indicate premature wear of the rubber joint. Silent blocks in the conditions of Russian roads should be inspected every 50 thousand km, and replacement on suspension units experiencing the greatest deformations, 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 the part with improvised means can lead to negative deformations, as well as to unnecessary mechanical stress at the welding sites. That is why you need to use the silent blocks remover. Before installing a new part, the working surface of its holder must be cleaned from dirt and greased.
There may be problems with pressing a new silent block into the work holder of the part without special tools - replacing it with your own hands often damages the elastic insert. As for work in the engine or gearbox, it is highly not recommended to act independently here. It is better to contact competent specialists with experience in similar jobs.
Why you need to use quality parts
The use of low-quality products can lead to rapid wear and damage to the suspension elements. The running voltage 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 have been more popular, but they are quite expensive compared to plain rubber. Their purchase is justified only in cases of uniform wear of the suspension elements of the car, while the mating parts are in good condition. This will ensure a smooth ride of the vehicle and a long service life of running gear under constant load.