The brake caliper is stuck or loose; the brake disc is warped or scratched; the vacuum booster or the brake wheel cylinder is faulty; the brake fluid, the rear axle oil seal leaks, and the wheel bearing seals leak grease and contaminate the brake friction pads. When slipping is caused, it is very easy to cause the body to shake when braking. It should be lubricated and tightened in time. If necessary, replace the brake friction pads. At the same time, replace the brake discs on the left and right sides of the coaxial. After troubleshooting, replace the brake shoes.
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