After a period of driving, the vehicle will cause the vehicle to produce tires such as tires due to traffic accidents, violent bumps caused by uneven roads, especially sudden bumps on high-speed roads, wear of chassis parts, replacement of chassis parts and tires, etc. Abnormal wear, loss of vehicle travel, reduced safety, increased fuel consumption, accelerated wear of parts, sinking of the steering wheel, drifting of the vehicle, etc., and these symptoms may bring you the risk of driving at any time.
Four-wheel positioning can be said that every car owner understands, but the real secret behind it, many car owners do not understand. Today we have come to a detailed explanation of the four-wheel alignment.
What is four-wheel alignment?
Four-wheel alignment is to diagnose the vehicle for adverse symptoms and eliminate these symptoms by positioning angle measurement. It is necessary for a general family car to perform four-wheel alignment during annual maintenance, and vehicles that are frequently used under special conditions should be positioned every three months.
Does the car have to be positioned in four wheels?
Most drivers find that the car is off the ground. The first reaction is to think that the tires and suspension system are out of order. Wheel positioning. In fact, there are many reasons for the deviation of the car. For example, the degree of wear of the tread pattern is different, the design of the suspension system is problematic, or the suspension is damaged, deformed, displaced, and the like.
1, tire pressure is not the main reason for the car deviation.
The position of the tire should be changed every 20,000 kilometers, because the wear of the drive wheel will always be larger than other wheels, and different friction will directly lead to deviation.
2. Under normal circumstances, the probability of deviation of the new car due to the suspension system is very low, because the vehicles before leaving the factory have been strictly tested and adjusted by the manufacturer.
However, it does not rule out that there is a problem with the original design. For example, the motion interference of the suspension guide rod and the steering tie rod will affect the deviation of the vehicle. The former is caused by errors in manufacturing and adjustment, the latter is caused by the original design, and the latter mostly causes a deviation to the right.
3, the quality of the steering system will also affect the car’s straight travel.
The looseness of the joints due to excessive wear clearance or wear of the bearings, kingpins and bushings will cause the car to swing its head during driving and will not maintain a normal trajectory. If it is the knuckle arm and the knuckle is bent and deformed, it will generally cause the vehicle to go in one-way deviation.
The most serious problem is that the horizontal tie rod ball head is loose after severe wear and will cause the steering to fail, and the car will completely lose control.
4, there are some alternative things that make you mistakenly think that the car is off the mark.
In high-speed cars, the horizontal wind will cause the car to run off; always relying on one side of the road will cause deviation; the low tire pressure on one side will cause deviation.
Under what circumstances does the vehicle need to be positioned in four wheels?
1. After replacing a new tire or after a collision accident repair.
2. The front and rear tires are unilaterally eccentric.
3, the steering wheel is too heavy or shivering while driving.
4, the car goes left or right when going straight.
5, daily maintenance of the vehicle: After driving for 3 months, the new car will be positioned once every six months or 10,000 kilometers.
What improvements will be made to the vehicle after normal four-wheel alignment?
1. Increase the safety of driving.
2. Reduce the abnormal wear of the tires.
3, keep the steering wheel straight while keeping straight, and maintain straight-line driving.
4. After steering, the steering wheel will be automatically corrected.
5, increase the sense of control of driving.
6. Reduce the abnormal consumption of fuel consumption.
7. Reduce the wear and tear of the suspension components.
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