The shape of the dust cover of the drive shaft is like the wrinkled part of the neck of the "sipper".Generally, when we pull out the neck of the straw, if you pull it too hard and pull it out in an instant, it may cause the wrinkle to break. Therefore, when the drink is inhaled, the drink will leak and cannot be sucked out. Phenomenon; the dust cover of the drive shaft is the same.

　　There is a universal mechanism at both ends of the drive shaft, one end is connected to the gearbox and the other end is connected to the front wheels (steering wheels).The inside of this universal mechanism is filled with high-temperature-resistant lubricating oil, and the outside is covered and sealed with a rubber dust cover.At the end where the wheels are connected is the part where the drive shaft is prone to failure.Generally speaking, it is the rupture of its dust cover that causes oil leakage, resulting in insufficient lubrication of the universal mechanism.

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