Practical Tips! What to Do When Your Hydraulic Breaker Isn't Striking or Has Weak Impact?
The hydraulic breaker hammer works by using the hydraulic system to drive the piston to move back and forth, producing impact energy. Common issues with hydraulic breakers hammer include no impact, intermittent impact, low impact frequency, and weak impact. Among these, the most common problems are no impact or intermittent impact, which generally occur in three scenarios:
1. Insufficient High-Pressure Oil Flow into the Breaker, Leading to No Impact
- Cause: Blocked or damaged pipelines; insufficient hydraulic oil.
- Solution: Inspect and repair the associated pipelines; check the oil supply system.
2. There is enough high-pressure oil, but the hydraulic breaker hammer does not strike.
| Reason | How to fix |
|---|---|
| Incorrect connection of oil inlet and return pipe | Correct it |
| Working pressure below specified value | Adjust system pressure |
| Directional valve spool stuck | Remove the valve core for cleaning and repair |
| Piston stuck | Manually push and pull the piston to check if it moves freely. If the piston does not move freely, the piston and guide sleeve are scratched and should be replaced. If possible, replace the piston as well. |
| Accumulator or nitrogen chamber pressure too high | Adjust the pressure of the accumulator or nitrogen chamber |
|
Shut-off valve not open |
Open the shut-off valve |
| Oil temperature above 80 degrees | Check the cooling system, reduce the oil temperature to the working temperature |
3. The piston moves but does not strike.
For this situation, the main reason is that the chisel is stuck. You can remove the chisel to check if the chisel pin and the chisel itself are broken or damaged. If necessary, inspect whether there are broken pieces inside or outside the sleeve that are blocking the chisel, and clean them up promptly if any are found.