The rupture of the brake drum of large trucks will lead to the failure of vehicle brakes and need to be repaired in time. The damage of the brake drum may be due to the rupture of the brake oil pipe or the damage of the brake cylinder, which leads to insufficient lubrication, intensified wear, damage to the brake drum and brake failure. Brake cylinder or oil pipe needs to be replaced. The disassembly and assembly method of truck brake drum is as follows: 1. Before disassembly, press the wedge upward through the bolt hole of the wheel with a screwdriver to reset the brake shoe; 2. Remove the hub cover with special tools, pull out the cotter pin, and remove the crown nut safety ring; 3. Remove the adjusting nut and washer of the pre-tightening degree of the hub bearing, and remove the brake drum from the bearing.