![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
For most owners, the spare tire may be one of the least frequently used items in the car. Because of this, the maintenance of the spare tire is often overlooked. As everyone knows, although spare tires are not commonly used, they often play an important role in critical moments.
Regularly check for wear
Under normal circumstances, the owner of the vehicle rarely checks the spare tire during routine maintenance or before long-distance travel. Many spare tires of the vehicle owner are in name only, and it is difficult to use it at a critical time. In fact, the role of the spare tire is crucial, especially high-speed long-distance driving.
In general, for the test of the spare tire, it is mainly to check the tire pressure and whether there is wear and tear. Before the tread wears to the wear mark line, the tire should be replaced as soon as possible. If there is a small crack on the side of the tire, you cannot use it to run long distances or high-speed traffic, because the sidewalls of the tire are thin and high-speed traffic is prone to puncture.
Use tire pressure should be adjusted
It should be reminded that spare tires are different from commonly used tires in terms of air pressure selection in order to ensure their shape and use during storage. Typical low-pressure tires are between 2.0 and 2.5, while spare tires are between 2.5 and 3.0. The pressure of the spare tire is unqualified. Since the owner does not have a barometer, there is no way to adjust the pressure. Therefore, after changing the spare tire, professionals should be required to adjust the pressure in order to perform normal use. It is generally safe to have the spare tire pressure hit 2.7.
In addition, the spare tire should not replace the right tire for a long time, because the spare tire is not often used, there is relatively little chance of friction with the ground, after replacing the spare tire, because the four tires have different friction coefficients, different ground adhesion, different pressure , Long-term use will have a certain impact on the vehicle's braking system, steering system and suspension system, giving the vehicle security a great hidden danger.
Should be replaced regularly
Many car owners often encounter such a situation: the car wants to replace the spare tire after the tire burst, but it finds that the spare tire has been seriously aged after being placed for many years, and it is already a waste tire. This is mainly because tires are rubber products. If they are stored for a long time, they will experience aging. Generally, the aging period of tires is about 4 years. Therefore, the spare tire should be replaced after 4 years.
At the same time, since the main component of the tire is rubber, the fear of rubber is the erosion of various oils. Owners often store lubricants and other oils in the trunk. Once the tires touch the tires, they will distort the tires, which will greatly reduce the service life of the tires. Therefore, try not to put the oil and the spare tire together. If the tire is oily, wash it with a neutral detergent in time.
How to replace the spare tire?
1. Use the jack to slightly support the car and loosen the wheel's tightening nuts before the tires have left the ground.
2. After loosening the tightening nuts, continue to use the jacks to support the car. After the tires are completely off the ground, remove the original tires.
3. Install the spare wheel and tighten all the fastening nuts evenly in the diagonal order.
4. The jacks are lowered and the tire replacement work ends here.
Chemical Oxygen Self-Rescuer (chemical oxygen self - rescuer0) isolated from the disaster area, air can arise through chemical reaction of oxygen self-rescuer, using potassium hydroxide or ultra sodium oxide react with carbon dioxide to produce oxygen to save his life.
The models permitted by the state are zh-30 and its variants (different materials have different endings), zh-45 and its variants, zh-60 and its variants.
The self-rescuer with other Numbers must have the above ZH related number and current number on the corresponding security certificate.
Chemical Oxygen Self-Rescuer,Breathing Apparatus,Oxygen Breathing Apparatus,Chemical Oxygen Mining Self-Rescuer
Jining Dongda Electromechanical Co.,Ltd. , http://www.coal-mine-equipment.com