The chassis is a totality of nodes and aggregates that provide the direct movement of the vehicle. It is the elements of the chassis of the car provide security and comfort, both the driver and passengers. A malfunction in aggregates and nodes of the "chassis" of the car, with a high probability, will lead to an emergency. For this reason, when buying a used car to the inspection and diagnostics of the chassis, it should be treated particularly carefully and tremble.

The chassis of the car, from which the chassis of the car is

The elements of the chassis of the car are directly:

• Rama (Binding Body);
• Front axle;
• Rear axle;
• Wheel suspension;
• Wheels;
• Tires.

Each of the above listed elements of the chassis of the car performs a specific function.

frame (Bear Body)

So to the frame or to the bearing body, depending on the type of car, almost all its elements are attached, for this reason it should be in good condition. Directly on the frame is installed by the power unit, gearbox, body, bridges, wheels and more.

front and rear axle

The front and rear axle of the car, combines the wheels on the same axis. In addition, they also fulfill the role of a car support. Bridges are attached directly to the frame itself or a carrier body.

Bridges are 4 species:

1. Leading;
2. Supporting;
3. Managed;
4. Managed-presenter.

The lead and manageable-lead car bridges are extremely complex design.

suspension wheels

The wheel suspension provides the wheel connection and a frame (carrier) car. It is the suspension that takes all the blows and oscillations arising during the movement of the vehicle.

To date, two types of suspension are used:

1. Dependent;
2. Independent.

The dependent suspension is considered obsolete, and it gradually displaces independent. The difference of these suspension is that the wheels with independent suspension located directly on the same axis are moved in a vertical position, independently of each other, in contrast to wheels with a dependent suspension of which is interconnected.

Inspection of a car that check when pre-examination

Inspection and diagnostics when buying a car can be divided into two main stages:

1. Preliminary inspection of the car;
2. Test drive car.

Inspection When buying a car, it is quite possible to produce yourself without contacting the car repair shop. Inspection of the suspension on their own is performed visually and on rumor.

When inspecting the car suspension, the main attention should be focused on the front side, as the main components and units are located there.

checking the steering system

When examining and checking the steering system, the following actions should be made:

• Try to rack your own craving and support stabilizer. A malfunction in the stabilizer will say the backlash and knock. This problem should be corrected as soon as possible.
• By turning the wheels to verify the steering thrust and its tips. This check is made for the identification of the backlash.
• Also, when checking, you should pay your attention to the steering cardan, which can have only two malfunctions. The first backlash, and the second heavy turning.

shock absorbers in which state they are

Car shock absorber checks visually. The visual inspection of the shock absorbers is carried out for the following faults:

• Deformation directly the hull itself of the shock absorber. The deformation of the housing can lead to a snack or piston clamp. As a result, the shock absorber will not be able to fulfill its direct duties.
• Leak oils from the shock absorber, can significantly reduce its effectiveness;
• Damage to the fasteners of the shock absorber, with a high share of the probability will result in their complete destruction.

Checking shock absorbers can be made in the following way. It is necessary to get up in any corner of the car and strongly shake it with all its weight. Thoroughly swinging the car needs to be removed from him hands. If he made more than one oscillation - it means, shock absorbers are faulty and need to be replaced.

Interesting! More about car shock absorbers and their checks can be found in the article, "What shock absorbers are better how to check shock absorbers when buying".

brake system in which state it is

A good brake system is a guarantee of its safety, if it is inspected, it is necessary to give her maximum attention. Inspection of the brake system must be made on the overpass or in the pit.

• First of all, you should pay your attention to the brake system pipeline. The inspection of the pipeline is carried out on the subject of cracks, dents, gerbins and dumps. Even with the presence of one defect, the pipeline is replaced.
• It should also be paid to brake hoses. To identify defects, they must be slightly bent, in case of detection of the brake hose changes.

Important! The presence of moisture on the brake hoses and pipeline indicates a leakage of the brake fluid.

Inspection of drums and brake pads can only be made after removing the wheels.

Test drive car, to pay attention when diagnosing cars in motion

Having finished with the visual inspection of the car, you can proceed to it directly in motion.

With a test drive of a used car, you should pay your attention to the following details:

• If the car is bad in turns, poorly holds the trajectory of movement and begins to roll. This is a clear sign of a malfunction in the car suspension, or rather in shock absorbers.
• Shaking and swaying appearing after Even, it would seem, a minor bump also talk about the malfunction of the shock absorbers.
• The brake system is checked by conventional braking. If the car is present an anti-blocking system (ABS). During braking, the car should remain manageable. In the case of its absence when braking, the car must lose control (wherever you turn the steering wheel).
• During the movement of the vehicle, no chants, crusts and creaks should be published. So, for example, the crunch of the vehicle described from the bottom with a high probability indicates a malfunction in the hinge of equal angular velocities (Solus), which in turn cannot be repaired.
• If the car is installed on the car or stepless variator. When you click on the gas pedal, the car should be mounted smoothly, without jerks and outsiders.
• When driving a car, it is necessary to dramatically release the gas pedal and listen to the work of the entire car as a whole. Unacceptably the appearance of a grincling, crunch, squeal and other extraneous noise.

Tips of professionals

• For high-quality inspection of the chassis of the car, its inspection should be carried out only on the observation pit or the overpass.
• Also before buying a used car, we recommend reading an article "How to find out a real car mileage".
• More about automotive shock absorbers and methods of their check can be found our article. "What shock absorbers are better how to check shock absorbers when buying".
• If you do not have sufficient skills and knowledge to check the used car, it is recommended to contact any specialized auto repair shop. Where it will be careful inspection and diagnostics. Which will detect all its hidden problems.