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During the active operation of the machine, the chassis wears out quite quickly. It serves as an intermediate element between the body and the road. Therefore, strong and unstable loads fall on it.
To ensure safety, excellent maneuverability, smooth running, it is recommended to monitor the condition of the chassis, which must always be operational. To do this, it is necessary to conduct an inspection of suspensions after passing 15 thousand kilometers.
The undercarriage diagnostics procedure involves checking its components, identifying backlash in ball bearings, correctness of support cups, brake pads, shock absorbers, and hubs. After testing, a conclusion is drawn up, which lists the shortcomings.
Undercarriage repair consists in replacing suspension parts. Restorative works such as replacement of stabilizer bushings are carried out using special tools. To ensure high-quality repair, genuine spare parts should be installed instead of worn parts.
The chassis has to withstand various vibrations, resistance forces, and many other influences. High loads are transmitted to the body through the suspension.
An experienced driver not only remembers what needs to be done when flooding antifreeze G 11 but also a sensitive car, capable of spotting emerging problems in the undercarriage. Tangible signs of defects are:
• vibrations of the steering wheel when driving on an uneven road;
• rocking the machine while driving;
• grinding, incomprehensible noises;
• uneven rubber wear;
• braking with accompanying tilting of the machine;
• impossibility to drive in a straight line. The car constantly tilts to the side when moving.
The comfort and handling of the car directly depends on the type of suspension. The cost of its repair is affected by the price of the parts that need to be replaced. The passenger car has two suspensions. Correct running gear helps soften shocks and dampen body vibrations. For many cars, the front suspension is controlled. A common cause of failure is wear of the upper support bearing.
Multi-link designs of rear suspensions are independent, when the wheels are attached to the body separately, or dependent, when the wheels of one axle are interconnected. The multi-link includes a subframe. It is attached to ball joints that soften shocks. When repairing the rear suspension, it is usually necessary to change stabilizer bushings, silent blocks, and shock absorbers.
