① Unscrew the half-shaft flange fixing nut, pull out the half-shaft, take off the locking nut, locking spacer, oil seal at the wheel hub, bearing adjusting nut, etc., take out the bearing, remove the oil, clean the bearing and the parts. Check whether the bearings and the parts are damaged and whether they need to be replaced or repaired. If normal, add enough new oil, reassemble and then adjust.
②Tighten the adjusting nut with a wrench about 500mm long until the hub is not loose. Then turn the hub forward and backward in two directions so that the bearing rollers can sit correctly on the cone surface of the inner and outer ring.
③Tighten the adjusting nut appropriately so that the stop pin on the adjusting nut overlaps with the adjacent hole on the lock ring. At this time, the hub should be able to rotate freely and there should be no obvious amount of oscillation.
④Tighten the lock nut to the tightest with a wrench about 500mm long.
⑤Check and accept: When rotating the wheel, there should be no sound, it should run freely, and there can be a very even sense of slight resistance in various parts around it.
Worn or damaged wheel bearings or wheel units can cause inappropriate and costly failure of your vehicle on the road, or even harm to your safety. In the use and installation of wheel bearings, please pay attention to the following matters.
1. In order to ensure maximum safety and reliability, it is recommended that you check the wheel bearings frequently regardless of the age of the vehicle – pay attention to any early warning signs of bearing wear: including any frictional noise during rotation 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 seal.
2. If you hear a noise 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, and it is also possible that some rotating parts are in contact with non-rotating parts. If the noise is confirmed to be in the bearing, the bearing may have been damaged and needs to be replaced.
3、Because the front hub causes both sides of the bearing to fail under similar working conditions, so even if only one bearing is broken, it is recommended to replace it in pairs.
4、The wheel hub bearings are sensitive, and in any case need to use the correct method and suitable tools. In the process of storage and installation, the parts of the bearing should not be damaged. Some bearings need larger pressure pressed in, so special tools are needed. Be sure to refer to the vehicle manufacturing instructions.