Automotive hub bearing installation and use of common sense


   The wheels of the car are the most used in pairs, using single row tapered rollers or ball bearings. With the development of technology, cars have been widely used in car hub units. Wheel bearing unit of the use of the scope and use of growing, has now developed to the third generation: the first generation is composed of double row angular contact bearings. The second generation on the outer raceway has a flange for the bearing fixed, the bearing can be simply set to the axle with nuts fixed. Making the maintenance of the car easier. The third generation of the wheel bearing unit is the use of bearing units and anti-brake system ABS match. The hub unit is designed with inner and outer flanges, which are bolted to the drive shaft and the outer flange is mounted together. A worn or damaged wheel hub or hub unit can cause unsuitable and costly failures in your vehicle's travel, even to your safety. In the use and installation of the hub bearing, please note the following:
   1, in order to maximize the safety and reliability, it is recommended that you regardless of the length of the car should always check the wheel bearings - pay attention to whether the bearing wear early warning signal: including any rotation of the friction noise or suspension combination round When the normal slowdown. The rear wheel drive of the vehicle is recommended to travel in the vehicle to 38000 km is to deal with the front wheel bearing lubrication. When replacing the brake system, check the bearing and replace the oil seal.
   2, if you hear the wheel bearing parts 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, or it may be that some of the rotating parts are in contact with the non-rotating parts. If it is confirmed that the noise in the bearing, the bearing may be damaged, need to be replaced.
   3, because the front wheel lead to both sides of the bearing failure working conditions are similar, so even if only a bad bearing, it is recommended to replace the pair.
   4, wheel bearings are more sensitive, in any case need to use the correct method and the appropriate tool. During the storage and installation process, the bearing parts can not be damaged. Some bearings require a large pressure pressure, so the need for special tools. Be sure to refer to the car manufacturer's instructions.
   5, the installation of bearings should be clean and tidy environment, small particles into the bearing will also shorten the bearing life. It is very important to keep the cleaning environment when changing the bearing. Do not allow the hammer to hit the bearing, pay attention to the bearings do not fall to the ground (or similar to improper handling). The conditions of the shaft and the bearing housings should also be checked before installation, and even minor wear can cause poor mating, leading to early failure of the bearing.
   6, on the wheel bearing unit, do not attempt to open the hub bearing or adjust the hub unit of the ring, otherwise it will damage the seal caused by water or dust into the. Even the ring and inner ring raceway are damaged, resulting in permanent bearing failure.
   7, with ABS device bearing the seal ring has a magnetic thrust ring, this thrust ring can not be hit, shock or collision with other magnetic fields. Remove them from the box before installation, keeping them away from the magnetic field, such as the use of electric motors or power tools. When installing these bearings, observe the ABS warning pin on the dial panel by road test to change the bearing operation.
   8, with ABS magnetic thrust ring wheel bearings, in order to determine the thrust ring installed on which side, you can use a small thing * near the edge of the bearing, bearing the magnetic force will attract it. Installed with a magnetic thrust ring on the side of the point, is the sensitive components of ABS. CAUTION: Incorrect installation may cause malfunction of the brake system.
   9, many of the bearings are sealed, this type of bearing in the entire life cycle is not required to add grease. Other non-sealed bearings such as double row tapered roller bearings must be lubricated when installed. As the bearing cavity size is different, it is difficult to determine how much fat, the most important thing is to ensure that the grease in the bearing, if too much oil, when the bearing rotation, the excess oil will seep. General experience: in the installation, the total amount of grease to account for 50% of the gap between bearings.
   10, the installation of locking nut due to the type of bearing and bearing different, the size of the torque vary widely. Note the instructions.