How to check the wear degree of the bearings of each wheel of a motor grader?

When checking the front wheels, support them with a scraper, get out of the car, and shake the tires back and forth with both hands. You will be able to feel the wear of the front wheel bearings. New cars can't shake at all, while old cars can shake to some extent. You can try this when buying a second-hand motor car. For the rear wheel, you can feel it by propping up one side of the wheel and shaking it back and forth.

Shift gears without accelerating, observe the two rear wheels, and you can check the degree of wheel key rolling. Additionally, the copper sleeve at the rear axle bell mouth is prone to wear and tear. The driver lowers the scraper in the cab, lifts the wheels, and then observes the position of the copper sleeve at the rear axle and balance box bell mouth from under the vehicle. The driver slowly lifts the scraper. At the moment when the wheels are about to touch the ground, the person squatting under the vehicle can clearly see it How big is the gap?

Also, pay attention to whether the two wheels at the back are in the same line. If the bearing is broken, the wheels will swing. If the half shaft bearing is broken, the oil level in the balance box will decrease. I hope these little experiences can be of some help to everyone.