General maintenance methods for hydraulic concrete placing boom out of running

Summary

1. The hydraulic hydraulic placing boom arm is out of control

1. The hydraulic safety valve is blocked, solution: clean

2. Internal and external leakage, cylinder seal damage, solution: replace

3. Reverse valve failure, solution: maintenance

4. Electrical failure, solution: maintenance

5. Insufficient oil pressure, solution: inspection and adjustment (completed by professionals)

6. Pressure changes in the pressure limiting valve, solution: inspection and adjustment (completed by professionals)

Ⅱ. The hydraulic concrete placing boom cannot be raised

1. The valve is contaminated or damaged. Solution: clean or replace.

2. The oil pump is contaminated or damaged. Solution: clean or replace.

3. The oil pump does not rotate. Solution: Repair and replace mechanical parts.

4. The reversing valve leaks oil. Solution: replace the seal.