Please pay attention to the following items in the use and installation of hub bearings:
1 in order to ensure maximum security and reliability, it is recommended that you no matter how long vehicles will often check the wheel hub bearing Pay attention to whether the bearing has worn early warning signal, including any rotating friction noise or hanging combination when abnormal wheel turning in deceleration of the rear wheel drive vehicles advice to 38000 kilometers is the vehicle for front wheel bearing lubrication When replacing the brake system, check the bearing and replace the oil seal.
2.If you hear the hub bearing part of the noise, first of all, it is important to find the location of the noise there are many moving parts that may produce noise, but also some rotating parts and non-rotating parts in contact if confirmed to be the noise in the bearing, the bearing may have been damaged and need to be replaced
3.Because the working conditions of the front hub leading to bearing failure on both sides are similar, it is recommended to replace in pairs even if only one bearing fails
4.Hub bearings are more sensitive, in any case need to use the right method and appropriate tools in the process of storage, transportation and installation, bearing components can not be damaged some bearings need greater pressure pressing, so special tools are needed.

5. When installing bearings, they should be installed in a clean and tidy environment. Small particles entering bearings will also shorten the service life of bearings. It is very important to keep a clean environment when replacing bearings. It is not allowed to knock the bearing with a hammer, and pay attention to the bearing not falling to the ground (or similar improper handling). Before installation, the condition of the shaft and bearing seat should also be checked. Even tiny wear will lead to poor fit, resulting in early failure of the bearing.
6. For the hub bearing unit, do not attempt to disassemble the hub bearing or adjust the seal ring of the hub unit, otherwise it will damage the seal ring and lead to the entry of water or dust. Even the raceways of the sealing ring and inner ring are damaged, resulting in permanent bearing failure.
7. There is a magnetic thrust ring in the seal ring of the bearing of the ABS device. This thrust ring can not be impacted, impacted or collided with other magnetic fields. Remove them from the box before installation and keep them away from magnetic fields such as motors or power tools in use. When installing these bearings, the operation of the bearings is changed by observing the ABS alarm needle on the instrument panel through a road test.
8. Hub bearing equipped with ABS magnetic thrust ring, in order to determine which side of 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. Install with one side of the magnetic thrust ring pointing inwardly towards the ABS sensor. Note: Improper installation may cause the brake system to fail to function.
9. Many bearings are sealed, and this kind of bearing does not need to add grease throughout its life. Other non-sealed bearings such as double row tapered roller bearings must be lubricated with grease during installation. Because of the different size of the inner cavity of the bearing, it is difficult to determine how much oil to add. The most important thing is to ensure that there is oil in the bearing. If the oil is too much, when the bearing rotates, the excess oil will ooze out. General experience: during installation, the total amount of grease should account for 50% of the clearance of bearings.