A: When braking in the following situations, the body is easy to shake.
1 brake disc or brake drum is scratched or not round;
2 brake shoe deformation;
3 the friction plate is slippery, oily or stuck;
4 brake cylinder (wheel cylinder) failure;
5 vacuum booster malfunction
When the above situation occurs, it should be repaired in time and replaced with unqualified parts. When replacing the brake disc or brake drum, replace both the left and right sides at the same time.