What causes an unstable steering wheel? What is the reason for the unstable steering wheel

The road is generally low on the left and high on the right, if you don't hold the rudder, the steering wheel is slightly deviated to the right. But if you gently hold the steering wheel and there is a clear feeling of pulling your hand to the right, it must be running off track, but in general, it is caused by the asymmetry between the left and right.

The asymmetry of tire pressure on both sides can be said to be one of the simplest, but often overlooked. Therefore, once you encounter the problem of deviation, it is always right to check the tire pressure first.

The difference in left and right clearance caused by the aging and wear of suspension components can also lead to mistracking, but this situation generally occurs on old bodies that have been driven for 8 years.

There is also a situation where nothing happens when you are driving, but when you apply the brakes, you start to deviate. And the heavier you step on, the bigger it is. This problem may be due to the imbalance of the braking force of the braking system on the left and right wheels, and the braking system should be checked.

I hope mine can help you, and I wish you a safe drive and all the best!

Answer: In the process of driving, there will be unstable driving phenomena such as the shaking of the steering wheel of the car and the swing of the left and right of the body, which makes it difficult for the driver to drive and affects the safety of driving. Hope it helps!

The clearance of the transmission mechanism in the steering machine is too large. The horizontal and tie rod joints are worn loosely. The mating clearance between the kingpin and the bushing of the steering knuckle is too large. The front wheel hub bearings are loose. Inaccurate front wheel alignment.

The normal steering machine is stable when driving in a straight line, does not deviate, does not tremble, and is light and flexible when turning. On the contrary, the fault of the direction system is mainly manifested as unstable straight driving, automatic deviation, or left and right, and some even trembling; And when.

It may be caused by a faulty ball joint or a poor four-wheel alignment.

What is the reason for the unstable steering wheel The main reason for the unstable steering wheel is the improper installation and looseness of the steering gear; The meshing clearance of the steering gear transmission pair is too large, and the clearance of the upper and lower bearings of the steering worm is too large or worn loosely; The front axle is bent, the front wheel toe is too large, etc. Diagnosis and exclusion of steering wheel instability is as follows: jack the front wheels, hold the tires with your hands, and push the front wheels from the inside out.

If there is looseness, it means that the front wheel kingpin and bearing are loose, and the bearing nut should be readjusted and fixed. If the bearing is damaged, replace it. Also, check if the leaf spring riding bolts are loose or loose.

The front beam rivets of the frame are loose and can be checked with a hammer hitting the rivet head. If there is a false sound, it means that the rivet is loose. If the above checks and adjustments still do not work, remove the front axle to check if it is bent, and if it is bent, replace it.

Check that the toe is in line with the requirements and readjust it if necessary. @2019

Steering wheel instability refers to the phenomenon that the front wheels of the car swing, the steering wheel shakes, and the hand feels numb. When the speed reaches 40 km/h, the steering wheel shakes, the front wheels sway, and it is difficult to control the steering wheel in severe cases. Reasons for unstable steering wheel1

The meshing clearance of the steering gear transmission pair is too large, and the clearance of the upper and lower bearings of the steering worm is too large or worn loose, resulting in steering wheel clearance.

Steering wheel instability refers to the phenomenon that the front wheels of the car swing, the steering wheel shakes, and the hand feels numb. When the speed reaches 40 km/h, the steering wheel shakes, the front wheels sway, and it is difficult to control the steering wheel in severe cases.

What causes an unstable steering wheel?

1.The meshing clearance of the steering gear transmission pair is too large, and the clearance between the upper and lower bearings of the steering worm is too large or worn loose, resulting in an increase in the steering wheel clearance;

2.The ball pins of the longitudinal and transverse tie rods are worn and loose, and the fastening nuts are loose;

3.The steering rocker spline is loose or the fastening nut is loose;

4.The steering knuckle kingpin and bushing are seriously worn, and the mating clearance increases;

5.The axial clearance of the front wheel hub bearing is too large;

6.The knuckle arm fastening nut is loose, and the front leaf spring U-bolt is loose.

Signs of a car steering wheel failure.

1.The steering wheel vibrates violently when the vehicle is moving.

When the vehicle is driving at a speed above medium speed, the chassis will make periodic noises, and the cab and doors will tremble in severe cases, and the steering wheel will vibrate strongly until the hand is numb, which is caused by the destruction of the dynamic balance of the directional transmission device, and the excessive wear of the transmission shaft, spline shaft and spline sleeve.

2.Heavy and laborious steering.

Steering system The rolling bearing and the sliding bearing of each part are too tightly matched, the bearing lubrication is poor, the steering tie rod and the ball joint of the tie rod are adjusted too tightly or lack of oil, and the steering shaft and housing are bent, resulting in jamming; improper adjustment of the toe of the front wheels; The front car or frame is bent, and the deformed tires are not in sufficient air pressure, especially the front tires.

What to do if the steering wheel is unstable.

If the steering wheel is unstable when driving, look farther away when driving, so that you can have a better sense of direction and judge whether the body is parallel to the road surface as soon as possible; Don't be nervous when adjusting your mindset. When you notice that the body is crooked, you need to correct the direction. At this time, you should gently hit the direction, slow down and adjust at a small angle.

Here's how to drive the steering wheel unsteadily:

1.The steering wheel can be seen as a round dial. The correct way to hold the steering wheel is 9 points on the left hand and 3 points on the right hand to form a two-handed 9:

15 or 10:10 pose. Hold the steering wheel lightly with both hands, the left and right thumbs should be naturally stretched out against the edge of the steering wheel, and the other four fingers should gently hold the steering wheel from the outside to the inside;

2.When turning the steering wheel, push the steering wheel with your right and left hands to make the car turn naturally. When turning right, hold the steering wheel with your left hand from 9 o'clock to 12 o'clock, slide your right hand on the steering wheel from 3 o'clock to 12 o'clock, then hold the steering wheel with your right hand from 12 o'clock to 6 o'clock, and at the same time slide your left hand on the other side of the steering wheel from 12 o'clock to 6 o'clock;

3.At this time, the steering wheel has already turned half a circle in your hand, and you can repeat the above actions when you need to turn at a large angle. When the steering wheel is turned back, the action at this time can also be used as an operation when turning left as long as the steering wheel is turned in the opposite direction.

What is the phenomenon of unstable steering wheel What to do if the steering wheel is unstable @2019

If the steering wheel is unstable during driving, you should look into the distance during driving, so that you can judge whether the body is parallel to the road as soon as possible. Don't be nervous about adjusting your psychology, when you find that the body is skewed, you need to correct the direction, and at this time, you should hit the direction lightly and slowly back to a small angle adjustment.

Here's how to drive a steering wheel that is unstable:

1. The steering wheel can be regarded as a round dial, and the correct way to hold the steering wheel is to put the left hand at 9 o'clock and the right hand at 3 o'clock, forming a posture like 9:15 or 10:10 for the watch hand. Hold the steering wheel lightly with both hands, the left and right thumbs should be naturally stretched out and leaning against the edge of the steering wheel, and the remaining four fingers should gently hold the steering wheel from the outside to the inside;

2. When turning the steering wheel, push the steering wheel with the left and right hands to make the car turn naturally. When turning right, the left hand holds the steering wheel from the 9 o'clock position to the 12 o'clock position, the right hand slides from the 3 o'clock position to the 12 o'clock position on the steering wheel, then the right hand holds the steering wheel and pulls the steering wheel down from the 12 o'clock position to the 6 o'clock position, while the left hand slides from the 12 o'clock position to the 6 o'clock position on the other side of the steering wheel and holds the steering wheel;

3. At this point, the steering wheel has been rotated half a circle in the hand, and when you need to turn at a large angle, you only need to repeat the above actions. If you want to return to the steering wheel after turning, you can turn the steering wheel in the opposite direction, and the action at this time can also be used as an operation when turning left.

Photo by Zhang Guiye) @2019