Daily maintenance needs to pay attention to whether to do four-wheel positioning?

2024-09-19 11:24:43

Does the vehicle need four-wheel positioning on a daily basis? Four-wheel positioning is to diagnose whether the vehicle has adverse symptoms through positioning Angle measurement, and eliminate these symptoms. After the vehicle has been on the road for some time, Severe bumps caused by traffic accidents, potholes and uneven roads, especially when driving at high speed, suddenly encounter uneven roads, chassis parts wear, replacement of chassis parts and tires, etc., will cause vehicles to produce dangerous symptoms such as abnormal tire wear, vehicle driving deviation, reduced safety, increased fuel consumption, accelerated parts wear, direction pan heavy, vehicle drift and so on. And these symptoms can put you in danger of driving at any time. Four-wheel positioning is to diagnose whether the vehicle has adverse symptoms through positioning Angle measurement and eliminate these symptoms. General family cars in the annual maintenance of the time to do a four-wheel positioning is necessary, and some special conditions frequently used vehicles to be positioned every three months.

First, the car running off must do four-wheel positioning?

Most drivers find that the car runs off course, and the first reaction is that there is a problem with the tire and suspension system, and they rush to do four-wheel positioning. In fact, there are many reasons for the car to run off, such as the degree of tread pattern wear is not the same will run off, suspension system design problems or suspension injury, deformation, displacement and so on.

1, tire pressure is an important cause of car deviation. The position of the tire should be changed every 20,000 kilometers, because the wear degree of the driving wheel will always be larger than the other wheels, and different friction will directly cause deviation.

2, under normal circumstances, due to the suspension system failure of the new car, the probability of deviation is very low, because the vehicle before the factory has been strictly tested and adjusted by the manufacturer. However, it does not rule out that the original design has problems, such as the motion interference of the suspension guide rod and the steering tie rod will affect the vehicle's deviation. The former is caused by errors in manufacturing and adjustment, the latter is caused by the original factory design, and the latter is mostly caused by running to the right.

3. The quality of the steering system will also affect the straight line of the car.

Due to excessive wear clearance or bearing, kingpin, bushing wear caused by loose, will cause the car to swing head in the driving, can not maintain normal movement track. If the steering knuckle arm and steering knuckle are bent and deformed, it will generally cause the car to run off in one direction. The most serious is that the ball head of the horizontal tie rod is loosened after serious wear, which will cause steering failure, and the car will be completely out of control.

4, there are some other things that make you think the car is running off.

At high speed, the lateral wind will cause the car to run off; Staying on the side of the road can cause you to run off; Low tire pressure on one side can cause deviation and so on.

Second, those things to pay attention to when doing four-wheel positioning:

When does the vehicle need to do four-wheel positioning?

1. Replace the new tire or repair after a collision accident. 2, front and rear tires one-sided wear. 3. When driving, the steering wheel is too heavy or floating and shaking. 4. When driving straight, the car runs to the left or right. 5, vehicle routine maintenance: the new car after 3 months of driving, then every six months or 10,000 kilometers to do a four-wheel positioning.

After normal four-wheel positioning, the vehicle will have the following improvements:

1, increase the safety of driving. 2, reduce the abnormal wear of tires. 3, keep the steering wheel straight, maintain straight driving. 4, after the steering wheel will automatically correct. 5. Increase the sense of driving control. 6, reduce the abnormal consumption of fuel consumption. 7, reduce the suspension parts wear.

What are the consequences of inaccurate four-wheel positioning?

1, excessive tire wear: inaccurate four-wheel positioning parameters can cause tire wear, resulting in the risk of blowout. 2, the vehicle is not comfortable to drive: steering wheel shaking and running off will make you feel more tired driving, while increasing the probability of traffic accidents. 3, increased fuel consumption: if there is no special circumstances and fuel consumption increases, it may be that the four-wheel positioning parameters of the vehicle are not accurate.

Three, teach you five tricks to do four wheel positioning to prevent being cheated:

1, when using the instrument to do four-wheel positioning, pay attention to confirm whether the positioning instrument of the maintenance factory is advanced and qualified. 2. Confirm whether the car data used by the maintenance personnel for your car is accurate. The car is increasingly updated, the data is also updated, and the upgrade of the positioning instrument is often unable to keep up with The Times, some new cars can only be positioned according to some old cars to make a choice. Take your car's manual with you when you locate it, because it has accurate data about your car. 3, after the car positioning is completed, view the printed data. Whether the camber Angle of the front wheel is within the standard range, do not differ too much, and do not differ too much from the left and right, because this will cause your car to run off. In the rear Angle, only some particularly high-end cars have a rear Angle of about positive 8 degrees, because they have good power steering. Now the front bundle value of the rear wheel of the high-end car is also adjustable, if the distance is too different from the standard value, it will make your car run off. 4, the car is not a standard chassis of the car, like some SUVs, pickup trucks, minibuses, etc., they are equipped with torsion bar springs, open for a long time will cause the left and right car height is inconsistent, at this time you need to adjust the torsion bar to reach the standard value. 5, be careful not to put the car's high profile and factory standard value is inconsistent, low side will run off; Overall too low running up will lose the effect of shock absorption, too high will make your car run up a floating feeling, the most important thing is to pay attention not to the front high after low.

Fourth, correct the owner's four-wheel positioning thought misunderstanding:

1, think that to do four-wheel positioning is to adjust the front wheel bundle. Four-wheel positioning, as the name suggests, needs to consider the positioning state of the four wheels of the car. The front bundle is an angular concept, technically called the front bundle Angle. In fact, the front wheel not only has the front bundle Angle, but also the wheel camber Angle, the kingpin back Angle, and the kingpin internal Angle. The rear wheel also has the front beam Angle, and the main positioning Angle such as the wheel camber Angle and the propulsion Angle. When doing four-wheel positioning, the positioning Angle of the rear wheel is more important.

2, choose a cheap shop to do four wheel positioning, the problem can not be solved. At present, many domestic and foreign four-wheel positioning equipment manufacturers compete to occupy the market, various forms of production, different quality positioning equipment is dazzling, no intellectual property rights and no technical content of positioning equipment manufacturers compete to lower prices. In fact, behind the low price is actually because the technical content and measurement accuracy of the equipment is not high, and the result is that the positioning problem of the vehicle can not be fundamentally solved.

3, the owner does not understand the four-wheel positioning operation common sense, easy to be fooled. Most users have little knowledge of four-wheel positioning, and basically do not care about the operation when they do wheel positioning of their cars, and rarely put forward their own opinions. Some maintenance personnel will avoid the owner to do four-wheel positioning, and some maintenance personnel do not check the positioning before positioning, and even the semi-shaft rubber sleeve and the hinged head rubber sleeve cracking can not inform the owner in time, resulting in greater losses for future users, repeated positioning and repeated charges.

Summary: Don't underestimate four-wheel positioning, related to our driving safety. Accurate four-wheel positioning data of a car can help us use the car better, reduce the cost of car maintenance and improve safe driving.