I don't know if you've ever encountered this
When you drive the vehicle to lightly press on the brakes
The car will make a strange noise
Did you ever think so?
This could be the crashing sound of something in the trunk
Or is it caused by uneven pavement?
No, no, no! Not necessarily
Lesson
On July 4, 2021, on the Hangrui Expressway, a small pickup truck's right rear wheel tire suddenly fell, the vehicle instantly lost control, 360 ° rotated three large circles, fortunately, both on the pickup truck were wearing seat belts, and the accident did not cause casualties.
According to the police, the accident occurred because the tire screw suddenly loosened, resulting in a break that caused the right rear tire to fall off.
That's right, a part went wrong
It will affect the operation of the entire machine
So don't be dismissive when you encounter a similar situation
So, how do you know if something is wrong with the part?
1
The sound of tapping
When the vehicle is downhill, gently press the brakes. If there is a "bumping" and "twittering" knocking sound coming out of the trunk, don't think that it is caused by the inertial collision of objects in the trunk, which is likely to be a rear tire warning, and the screws are loose!
2
Click
When the car sways left and right during driving, and there is a "clicking" sound when driving at low speed, you must be vigilant, which indicates that your wheel screws have been very loose. If you don't stop for inspection, it is likely to cause an accident.
All in all
When you are driving, after hearing a strange noise
Be sure to find a safe place to park in time
Double-check the hub for looseness
Reinforce before driving on the road
Double flash warning signs by the side of the road
Park the vehicle in a position that does not obstruct the normal passage of traffic, pull the handbrake (or turn on the electronic parking), turn on the double flash, and correctly place the triangle warning sign behind the vehicle.
Remember, regular roads
The distance for placing triangular warning signs is 50 to 100 meters
The highway section needs to be expanded to more than 150 meters
Remove the tools and loosen the tire bolts one by one
The tools are usually in the dark compartment of the trunk, and the tire replacement tools, including jacks, socket wrenches, etc., are first taken out, and then the spare tire is taken out.
The bolts of ordinary family cars are all right-handed threads, and the bolts can be loosened by pulling the wrench, and the diagonal way should be used when loosening the bolts, which is to prevent the deformation of the firmware from being unevenly forced. Just loosen the bolt a little, don't unscrew all the bolts.
Lift the vehicle with a jack
There are indicated positions of jacks on both sides of the tires, making them easy to find. First, the jack is fixed under the support point closest to the wheel to be replaced, and then the spare tire is placed under the car to prevent the body from slipping and injuring people.
Once the tires are slightly off the ground, use a socket wrench to unscrew all the bolts, then remove the broken tires and pad them under the body.
Install the spare tire and lower the jack to tighten the bolts
The difficulty of installing the tire lies in how to align the spare tire with the wheel fixing screw, which is more physically demanding, it is best to have the assistance of others, if a person operates it is recommended to use the leg or foot to hold the spare tire to prevent displacement.
Then lower the jack to the tire and gently touch the ground, tighten the screws diagonally with a socket wrench. When tightening the screws, make sure that the number of turns per screw is consistent, and the purpose is to be evenly stressed on each screw.
Safety is no small matter, and precautions are taken as a precaution
How can we prevent the wheel hub screws from loosening?
It is necessary to check the tires before driving
1. Regular inspection
Before driving, take a minute around the car to check to see if anything is abnormal.
Regularly go to the 4S shop or auto repair shop to do an inspection, be sure to focus on checking whether the tires, shock absorption and other accessories are intact, to avoid the phenomenon of tire punctures during driving. If the car is often driving at high speed, it is even more necessary to increase the frequency of inspection.
2. Try to drive on a flat road
Try to choose a smooth road to drive, in the uneven road speed must not be fast, encounter roadblocks are best to slow down. After the wheel hub is damaged, it is generally invisible to the naked eye, and it is easy to form a safety hazard.
3, the wheel is best not to wipe the curb
Develop good driving habits and try to avoid rubbing the wheels against the curbs.
We can never predict it
Tomorrow and the unexpected which arrives first
But we can do our best to ensure driving safety
Check before driving and concentrate while driving
Carry out safety and security to the end!