1. To ensure maximum safety and reliability, it is recommended that you check the wheel bearings frequently regardless of the age of the vehicle - look out for early warning signs of bearing wear: including any frictional noise when turning or abnormal deceleration of the suspension combination wheels during cornering. For rear-wheel drive vehicles it is recommended that the front wheel bearings should be lubricated when the vehicle reaches 38,000 km. When replacing the brake system, check the bearings and replace the oil seals.

2. If you hear a noise coming from the wheel bearing area, first, it is important to find the location where the noise is occurring. There are many moving parts that may produce the noise, or it may be that some rotating parts are in contact with non-rotating parts. If the noise is confirmed to be in the bearing, the bearing may be damaged and needs to be replaced.

3. Because the front hub causes similar operating conditions for both sides of the bearing to fail, pair replacement is recommended, even if only one bearing is broken.

4. Wheel bearings are sensitive and require the correct method and proper tools in all cases. In the process of storage and installation, the parts of the bearing must not be damaged. Some bearings need to be pressed in with greater pressure, so special tools are needed, and must be referred to the car manufacturing instructions.

5. The bearing should be installed in a clean and tidy environment, fine particles into the bearing will also shorten the life of the bearing. It is very important to maintain 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 mishandling). The condition of the shaft and housing should also be checked before mounting. Even minor wear can lead to poor fit and thus early bearing failure.

6. For wheel bearing units, do not attempt to disassemble the wheel bearing or adjust the seal of the wheel unit, as this can cause damage to the seal leading to the entry of water or dust. Even the seal and the raceway of the inner ring will be damaged, resulting in permanent failure of the bearing.

7. There is a magnetic thrust ring inside the seal of the bearing with ABS unit, this thrust ring should not be subjected to collision, impact or collision with other magnetic fields. Remove them from the box before installation and keep them away from magnetic fields, such as the motor or power tools used. When installing these bearings, change the operation of the bearings by observing the ABS warning needle on the dashboard through the road test.

8. Wheel bearings equipped with ABS magnetic thrust rings. To determine which side the thrust ring is mounted on, use a small, light object near the edge of the bearing, and the magnetic force generated by the bearing will attract it. Install the magnetic thrust ring with the side pointing inward, right at the sensitive element of the ABS. Note: Incorrect installation may cause the brake system to fail to function.

9. Many bearings are sealed, and these bearings do not require greasing for their entire life. Other bearings that are not sealed such as double row tapered roller bearings must be lubricated with grease at the time of installation. It is difficult to determine how much grease to add because of the different size of the inner cavity of the bearing, 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: in the installation, the total amount of grease should be 50% of the clearance of the bearing.

10. When installing the lock nut, the size of the torque varies greatly due to the different types of bearings and bearing housings. Pay attention to refer to the relevant instructions.