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Product Description
1. In order to ensure the safety and reliability to the greatest extent, it is recommended that you always check the hub bearing regardless of the age of the vehicle-pay attention to whether the bearing has early warning signals of wear, including any friction noise during rotation or abnormal deceleration of the suspension combined wheel when turning. For rear-wheel drive vehicles, it is suggested that the front hub bearing should be lubricated when the vehicle travels to 38,000 kilometers. When replacing the brake system, check the bearing and replace the oil seal.
2. If you hear the noise from the hub bearing, first of all, it is important to find the location where the noise occurs. There are many moving parts that may produce noise, or some rotating parts may come into contact with non-rotating parts. If the noise in the bearing is confirmed, the bearing may be damaged and needs to be replaced.
3. Because the working conditions of the front hub leading to the failure of bearings on both sides are similar, even if only one bearing is broken, it is recommended to replace it in pairs.
4. Hub bearings are sensitive, so the correct methods and tools are needed in any case. In the process of storage, transportation and installation, the bearing parts must not be damaged. Some bearings need large pressure to press in, so special tools are needed. Be sure to refer to the automobile manufacturing instructions.
5. When installing the bearing, it should be in a clean and tidy environment. Fine particles entering the bearing will also shorten the service life of the bearing. It is very important to keep a clean environment when replacing bearings. It is not allowed to hit the bearing with a hammer, and be careful not to drop the bearing on the ground (or similar improper handling). Before installation, the condition of the shaft and bearing seat should also be checked. Even slight wear will lead to poor matching, which will lead to early failure of the bearing.
6. For the hub bearing unit, do not attempt to disassemble the hub bearing or adjust the sealing ring of the hub unit, otherwise the sealing ring will be damaged and water or dust will enter. Even the sealing ring and the raceway of the inner ring are damaged, resulting in the permanent failure of the bearing.
7. There is a magnetic thrust ring in the sealing ring of the bearing equipped with ABS device. This thrust ring cannot be collided, impacted or collided with other magnetic fields. Take them out of the box before installation and keep them away from magnetic fields, such as motors or power tools used. When installing these bearings, observe the ABS alarm pin on the instrument panel through road test to change the operation of the bearings.
8. For the hub bearing with ABS magnetic thrust ring, in order to determine which side the thrust ring is installed, you can use a light and small thing * near the edge of the bearing, and the magnetic force generated by the bearing will attract it. When installing, point the side with magnetic thrust ring inward, facing the sensitive element of ABS. Caution: Improper installation may lead to the failure of the braking system.
9. Many bearings are sealed, and this kind of bearing does not need to be greased during the whole life. Other unsealed bearings, such as double-row tapered roller bearings, must be lubricated with grease during installation. Because the size of the inner cavity of the bearing is different, it is difficult to determine how much grease to add. The most important thing is to ensure that there is grease in the bearing. If there is too much grease, when the bearing rotates, the excess grease will seep out. General experience: When installing, the total amount of grease should account for 50% of the clearance of the bearing.
10. When installing the lock nut, the torque varies greatly due to the different bearing types and bearing housings.
