Why do you deviate? How often do you do four-wheel alignment?

First, the so-called four-wheel positioning refers to measuring and correcting the positioning angles related to the four wheels with the average propulsion direction of the rear wheels as the positioning benchmark; Therefore, when the vehicle is running, all the components of the chassis can maintain a proper geometric relationship with the tires, so that the driver can drive the vehicle correctly and comfortably, and the service life of the tires and chassis-related components is prolonged.

Second, when do you need to do four-wheel alignment?

1, before the annual inspection of automobiles

2. When the new car reaches 3000 kilometers.

3, every six months or when the vehicle reaches ten thousand kilometers.

4. After replacing or adjusting the tire and suspension system.

5. When replacing the steering system and parts.

6. The steering wheel is not straight when going straight.

7. Hold the steering wheel tightly when going straight.

8. When going straight, the vehicle will lean to one side.

9. When the vehicle turns, the steering wheel is too heavy or cannot be adjusted automatically.

10, I feel my body shaking or floating during exercise.

1 1, abnormal tire wear.

12. After the accident car is repaired,

Third, how to choose

First, choose a good four-wheel alignment instrument. With the evolution of suspension system, the more connecting rods, the more complicated the structure, and the higher the requirements for four-wheel alignment angle. Choosing an advanced service shop of four-wheel alignment instrument is the premise of doing a good job of four-wheel alignment. The following are the advanced performances of some four-wheel aligners in recent years for your reference:

1. Rodless probe (sensor): Rodless sensor is based on the principle of electronic inclinometer in aerospace industry, and its advanced design aims to reduce the inconvenience and error caused by the left and right projection of traditional long-rod probe. The rodless probe is used for four-wheel independent measurement, so there is no need to worry about left and right projection, and the measurement data is more accurate.

2. Wireless transmission electronic gauge: It is popular to modify vehicle tires now. After refitting the tire, the track distance between the two wheels changes, but the original factory value on the locator remains unchanged. The electronic gauge can be used to measure the modified wheel track of the vehicle, and the data can be wirelessly transmitted to the calculation system for modification, providing the most correct measured value.

3. Multi-angle simultaneous display screen: the measurement and adjustment results can be displayed synchronously in the form of graphics, data and colors, which is convenient for technicians to adjust the vehicle.

4. Don't be superstitious about transmission mode: The main function of vehicle four-wheel alignment instrument is to provide a set of accurate measurement data for chassis maintenance technicians as the basic data for adjusting vehicle chassis. The key is whether the value provided by the sensor is correct. The so-called advanced transmission system emphasized by some manufacturers or stores is just a way to transmit measurement data. Imagine, if the measured data is not accurate, what is the use of advanced data transmission methods? Therefore, for the four-wheel alignment instrument, the accuracy of the measured data is the most important.

In addition, the four-wheel locator is not used to adjust or change the positioning angle. It is only used to measure the positioning angle for technical reference. The technician compares the angle measured by the instrument with the angle set by the original factory. If it exceeds the allowable range of design, some parts will be adjusted or replaced to restore the original design angle. So when you choose a four-wheel positioning store, you must remember that the advantages and disadvantages of positioning instruments are important, but the "person" who adjusts the positioning angle is more important. Experienced and skilled technicians and advanced instruments are the best choice.