The hydraulic cylinder of the tunnel mucking machine sometimes produces a lot of noise during operation. The reasons for the attack are as follows:
1. There is air in the oil of the tunnel mucking machine: the oil of the hydraulic cylinder is mixed with air or the air may not be ## exhausted, noise will occur under pressure, and the air in the hydraulic cylinder should be exhausted.
2. The oil seal of the tunnel mucking machine is damaged: The oil seal of the hydraulic cylinder is damaged. If the airtightness is not good, it will enter the air, and the oil seal should be replaced.
3. Piston rod twists and turns: When the piston rod twists and turns, the tunnel mucking machine movement will produce a lot of noise. Straighten the piston rod.
