The front bushings of the front suspension arms are two coaxial bushings, the space between which is filled with a rubber insert. Silent blocks connect the lever to the wheel hub and serve to damp shocks and vibrations.
Front silent blocks are one of the main structural elements of the multi-link front suspension. The silent block is used to connect the lever to the front wheel hub of the vehicle. Structurally, the front arm bush is similar to other bushings used in the engine mount. According to the principle of action, the silent block is an elastic hinge that allows small movements in all directions.
Silent block design
The silentblock consists of two metal bushings with a rubber spacer between them. Silent blocks are used to damp vibrations and shocks during their transfer from one suspension part to another. These parts are an indispensable part of the design of a modern car, significantly increasing comfort when driving on uneven surfaces.
The metal bushings of the silent blocks are made of corrosion-resistant steel that prevents rust from occurring. The silentblock is pressed into the hole of the lever along the outer cylindrical surface of the outer sleeve. The silent block is mounted by cooling it and heating the front arm flange, and dismantling is carried out using a special puller.
Technical condition control
The simplicity of the design does not diminish the importance of this part for maintaining the safety of driving, since during operation the silent block is subjected to sufficiently high loads. The life cycle of the silent block of the front levers is 70-100 thousand km. during normal operation of the car and about 40 thousand km. with constant off-road driving. The worse the operating conditions, the more often it is necessary to replace the silent block. The use of faulty silent blocks leads to uneven tire wear, which can subsequently cause an emergency.
The condition of the front silent blocks of the front levers is determined both by a visual method and during a comprehensive diagnosis. Visually, the silent block is checked for delamination of the rubber insert, in which the part must be replaced with a new one. Also, strong wear of the silent block leads to a characteristic sound resembling a creak when the car moves. Replacing the silentblock can be performed both at a service station and independently.
