The speed of Komatsu series accessories cannot reach the specified value

Even if all the flow control valves are turned on, the speed of the hydraulic cylinder will not increase, and the Komatsu series accessories are underspeed. The reasons for this problem are as follows.

1. The oil supply of the hydraulic pump is insufficient, and the pressure of the parts of the Komatsu PC60-6 hydraulic pump is not working. It may be caused by the wear of the internal parts of the hydraulic pump, which may cause the volume power of the pump to drop, the motor speed is not good, and the hydraulic pump is blocked due to suction.

2. The system has a large amount of oil leakage, including external leakage and internal leakage

3. The overflow valve overflows too much

4. The working cavity and return cavity of the hydraulic cylinder

5. The hydraulic cylinder with piston ring seal is underspeed

6. The inner wall of the cylinder is seriously damaged, causing the hydraulic cylinder to slow down or stop halfway

7. The quality of the hydraulic cylinder device, Komatsu PC30 hydraulic pump parts are not good enough, and the hydraulic cylinder is not too fast, etc.