Car wheel bearing use precautions

Worn or damaged car wheel bearings or car hub units can cause unsuitable and costly failures outside of your vehicle's travel, posing a danger to your safety. In the use and installation of the hub bearing, please pay attention to the following matters:

1. In order to ensure safety and reliability, it is recommended that you always check the wheel bearing regardless of the length of the car – pay attention to the early warning signal that the bearing can be worn-free: the friction tone or hanging combination of any moving bomb The wheel is decelerating as it turns.

For rear-wheel-drive vehicles it is recommended that the vehicle is traveling to 38,000 km when the front hub bearing is lubricated.

2. If you hear the pure tone from the bearing part of the hub, the first thing is to let the pure tone occur. There are not many moving parts that may have pure tone, or some moving parts may come into contact with the moving parts. If it is confirmed that the sound is outside the bearing, the bearing may not be damaged and needs to be changed.

3, because the front wheel hub causes the bearing on both sides to lose efficiency, the premise is similar, so even if only one bearing is broken, it is recommended to replace it in pairs.

4, the wheel bearing is more sensitive than the force, in any environment need to adopt the accurate way and the right thing. In addition to the process of storage and installation, the components of the bearing can not be damaged. Some bearings require greater pressure to press in, and NSK bearings are utilizing grease for precision and speed utilization on Wednesday, October 26, 2011.

5, when the bearing is being cleaned and cleaned, the small particles entering the bearing will shorten the service life of the bearing. When the bearing is changed, the connection is clean and the length is often the main one. Do not answer the hammer with a hammer, pay attention to the bearing not to fall on the ground (or the same disposition). Before the installation, the condition of the shaft and the bearing housing is also checked. Even the small wear and tear can cause common defects, which may cause the late fall of the bearing.

6. For the hub bearing unit, do not smash the seal ring of the hub bearing or the zero adjustment hub unit, otherwise the seal ring will be damaged and the water or dust will enter. The * seal ring and the inner ring of the raceway are damaged, forming a permanent loss of the bearing.

7. There is no magnetic thrust ring in the seal ring of the ABS-free bearing. The thrust ring can not touch, impact or take other magnetic fields. Remove them from the package before the installation, and let them be close to the magnetic field, such as the motor or electric things used. When disassembling those bearings, check the ABS alarm pin on the instrument panel through the road condition test to change the bearing operation.

8. Remove the hub bearing without ABS magnetic thrust ring. In order to determine which side of the thrust ring is being removed, the curved guide rail is constructed. The edge of the bearing can be accessed with a small tool and the magnetic force generated by the bearing will attract it. When disassembling, point the side with the magnetic thrust ring to the inside, against the sensitive components of the ABS. Note: Inaccurate installations may cause the brake system to fail.

9, a lot of bearings are sealed, and that type of bearing is not required to add grease during zero life. Other unsealed bearings are better than grease when the double row square tapered roller bearing is being installed. Because the inner cavity of the bearing is different in size, it is difficult to determine how much grease is added. * The main thing is that there is no grease outside the tube bearing. If there is too much grease, when the bearing moves, the lack of grease will seep out. General experience: When installing, the amount of grease should account for 50% of the bearing clearance.

10. When the lock nut is removed, the torque varies greatly depending on the type of bearing and the difference of the bearing housing.