1. Steering rod
A loose steering rod is a serious hazard and must be checked carefully during routine maintenance. The method is actually very simple. While holding the tie rod, shake it vigorously. If there is no shaking, it means that the operation is normal. Otherwise, it is necessary to replace the ball head or tie rod assembly.

2. Spark plug
Spark plugs are divided into ordinary, platinum and iridium. The service life is long and short, ranging from 30,000 to 100,000 kilometers. It will directly affect the working condition of the engine, and it is also directly related to the quality of the oil used. Regular Check it for carbon deposits and clearances.

3. Brake disc
The brake pads are generally checked during maintenance, but the brake disc is also very important. If there are obvious cracks on the brake disc, it should be replaced immediately. The service life of the brake disc is directly related to the driver’s driving habits and road conditions. Generally speaking, it is recommended to replace the brake disc every two brake pads.

4. Shock absorber
The oil leakage of the seal is a sign of damage to the shock absorber. When driving, the bumps are obvious or the braking distance becomes longer, which indicates that there is a problem with the shock absorber. Therefore, it is necessary to check the seal for oil leakage during regular maintenance. Replace in time.

5. Ball cage cover
The ball cage is also called a universal joint. The ball cage sleeve is a protective layer of rubber. Its function is to seal against dust and prevent the loss of lubricant around the ball cage. Once damaged, it will cause dry grinding and even It will cause the half shaft to be scrapped. It seems that no matter people or cars, dry grinding can’t stand it.

6. Wheel bearing
The inspection method is very simple. Raise the vehicle and release the handbrake, turn the wheels one by one by hand, and listen for a “buzzing” abnormal sound. If there is no abnormal sound, it means everything is normal. This inspection method is very easy. Let the mechanic lift the car and release the handbrake, turn the wheel hard, and see if you can hear any abnormal noise. If not, everything will be fine.

7. Exhaust pipe
The exhaust pipe is often accidentally wiped under the car. Don’t forget its existence during maintenance, especially for modified cars.