The brake manufacturer inventory the reasons why the brake cannot be used normally
1. Insufficient lubricating oil in the brake causes an increase in brake friction and makes the brake insensitive.
2. The sealing of the return valve is poor, and the tension spring of the outlet valve is broken, causing a decrease in the elasticity of the slewing bearing and resulting in inflexibility.
3. The brake wheel cylinder cup is aged, swollen, and the piston is stuck, resulting in an inflexible braking effect.
4. The brake shoes have excessive clearance, resulting in insensitive operation.
5. The braking effect caused by the brake drum is not sensitive.
6. The brake hydraulic system enters air, causing insufficient force in the hydraulic system.