Automotive wheel bearings are used in pairs over the most single row tapered roller or ball bearings. As technology advances, has been widely used car auto wheel hub unit. Wheel hub bearing units and the use of the growing use, has now developed to the third generation: the first generation is a double row angular contact bearing. Second-generation outer raceway for the bearing with a fixed flange, the bearing can be simply set to a fixed nut on the shaft. Making car maintenance becomes easy. Third-generation wheel hub bearing unit is the use of the bearing unit and ABS anti-lock brake systems compatible. Wheel hub unit is designed with inner flange and outer flange, flange bolt inside the drive shaft, the bearings will be installed outside the flange together. Worn or damaged wheel bearing or hub unit will make your vehicles in the road occurred anachronistic and costly failure, or even cause harm to your safety. The use of the wheel bearing and installation please note the following: 1, in order to ensure maximum safety and reliability, regardless of vehicle age is recommended that you should always check how long the wheel bearings - bearings for wear attention to early warning signals : including any noise or rotation of the friction wheel suspension combined abnormal in turn slow down. Rear-wheel drive vehicles recommended for vehicles to 38,000 km in response to the front wheel hub bearings are lubricated. When replacing the brake system, check bearings and replace seals. 2, the wheel bearings are more sensitive, in any case need to adopt the right approach and the right tools. In storage and transportation and installation process, the bearing components can not be damaged. Some bearings require greater pressure on the push, so they need special tools. Must refer to vehicle manufacturers instructions. 3, wheel bearing parts such as hear the noise issue, first, it is important to find the noise occurs. There are many possible noise of moving parts, rotating parts may also be some place with no contact with rotating parts. If confirmation is bearing noise, bearing may be damaged and need replacing. 4, because the front wheel bearing failure led to both sides of the working conditions are similar, so even if only a bad bearings, replaced in pairs also recommended. 5, the bearing should be installed in a clean environment, small particles into the bearing will shorten bearing life. Replacement bearings to keep a clean environment is very important. Not allowed to hit with a hammer bearing note bearing does not fall out on the floor (or similar improper handling). Before installation shaft and housing should also check the status, even with tiny wear can lead to poor, causing early bearing failure. 6, equipped with ABS unit bearing the seal within a magnetic thrust ring, thrust ring can not be such a collision, impact or collision with other magnetic fields. Before installing, remove from the box, so that they stay away from magnetic fields, such as the use of motors or power tools. Installation of these bearings, the road test by observing the needle on the instrument panel ABS warning to change the bearing operation. 7, magnetic thrust ring with ABS wheel bearing, thrust ring installed in order to determine which side, you can use a light little thing * near the edge of the bearing, the bearing will be attracted by magnetic force generated by it. Installation will take the side of the magnetic thrust ring pointing inside, is on the ABS sensor. Note: Incorrect installation can cause the brake system malfunction. 8, the wheel bearing unit, do not attempt to disassemble or adjust the wheel bearing hub unit seals, or seals will result in damage to water or dust from entering. Even the inner ring and the raceway are damaged, causing permanent failure of the bearing. 9, many of the bearings are sealed, the entire life of these bearings is no need to add grease. Other non-sealed bearings such as double-row tapered roller bearings must be installed plus grease. As the bearing cavity of different sizes, it is difficult to determine how much oil, the most important is to ensure that the bearing in oil, if too much fat, when the bearing rotates, the extra oil will be leaking. General experience: during installation, the amount of fat to account for 50% of the bearing clearance. 10, installation of locking nuts because the bearing type and bearing different torque size varies greatly.
