【 Maintenance Guide for Four Wheel Bearings of Small Cars: It is recommended to maintain them every 20000 to 30000 kilometers or every 2 years 】
Four wheel bearings make the vehicle run more steadily, and good maintenance can extend its lifespan. It is recommended to maintain the four-wheel bearings of the car every 20000 to 30000 kilometers or 2 years (whichever comes first). Check in advance if you walk on a bad road or hear abnormal noises. The specific maintenance points are as follows:
[Maintenance content: Check the condition of lubricating grease, aging of seals, and abnormal noise of bearings]
Nowadays, sealed wheel hub bearings are commonly used in cars, and lubricating grease has been added before leaving the factory. In daily life, the main focus is on whether the sealing ring is broken and whether the lubricating grease is leaking. The old car uses open tapered bearings, which need to be disassembled and cleaned before adding calcium based grease.
Abnormal signal: buzzing noise and steering wheel shaking during driving, requiring immediate maintenance
If you hear a buzzing sound or the steering wheel shakes violently when the speed exceeds 60km/h, it may be due to a faulty bearing. Use a jack to lift the car and turn the tires to listen for any metal friction sound. The ABS light on may also indicate that the magnetic coding ring on the bearing is damaged.
【 Influencing factors: The cycle should be shortened after encountering harsh road conditions or wading through water 】
Frequently walking on rough roads, pulling heavy goods, or wading in water (with water depth exceeding half of the wheel hub), bearings are prone to water ingress. It is recommended to inspect them after 10000 to 15000 kilometers. After wading through water, special attention should be paid to sealing to prevent grease failure. Rapid acceleration and braking can also cause faster bearing wear.
Remember these key points, regular maintenance can make your car run more steadily. Don't procrastinate if you have any problems, it's safe to handle them in a timely manner.
