The silent block is a rubber-metal hinge. Necessary in order to reduce various noise and vibration in the area of the connection points of the suspension units.
This element has a cylindrical shape and consists of 3 parts
The functionality of the Silent Block is simple; it allows two different articulated suspension parts to have limited movement relative to each other, while being in an elastic connection. It is impossible to feel this elasticity manually - it will seem that the outer cylinder and the inner core are rigidly connected. However, if elements weighing hundreds of pounds, and even those that are dynamic, are connected in this way, then the unit in question will be able to effectively protect them from damage to each other, and will also absorb all shocks and vibrations. With their help, parts of the lower arms last much longer.
Signs of a malfunction that require you to contact a repair shop:
It is best that the chassis diagnostics be carried out by specialized car service specialists.
When diagnosing a specific hinge, you do not need to perform installation; first, a visual inspection of the silent block is carried out; the rubber part of the worn silent block will be clean, this is due to the fact that large fluctuations of the outer part occur relative to the inner. Accordingly, a good silent block has a dirty rubber part. Next, to be completely sure, you just need to swing this connection of the car with a pry bar and carefully monitor its behavior. If it begins to make sounds and make high-amplitude vibrations, this indicates that it needs to be changed. But remember: Silent blocks are paired parts, if you install one new silent block, then you need to change the symmetrical one too.
There is no need to delay replacing faulty silent blocks.
It should be understood that the more difficult the operating conditions of the car's chassis, the more often it is necessary to inspect it and replace parts, and secondly, with regular off-road travel, silent blocks will have to be changed 2 times more often.
Silent block material
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Below you can find information about other fixes