The hydraulic hammer‘s principle is to promote the reciprocating movement of the piston via the hydraulic system and to output the striking energy to work. As a result, the striking frequency of the breaking hammer is critical. When the breaker does not strike, strikes intermittently, strikes with low frequency, or strikes weakly, its working efficiency suffers.So, what are the phenomena that cause the breaker’s strike frequency to be incorrect? Fast Hydraulics will take everyone today to investigate the reasons for this.
1,The piston moves but does not strike the ground.
In general, the chisel is stuck, which is why the piston moves but does not strike. By removing the chisel, you can see if the rod pin and the chisel rod are broken or damaged. If necessary, inspect the tool brush and thrust brush for damage and dropped small pieces that are obstructing the chisel. If there are any small pieces, clean them as soon as possible.
2,There is insufficient high-pressure oil to allow oil to flow close to the inside of the breaker without striking.The breaker will not strike if there is insufficient high-pressure oil flowing into it.
3,The piston has become stuck.
When the piston becomes stuck, the hammer strikes at the incorrect frequency. You can now push and pull the piston by hand to see if it is flexible. If the piston cannot move freely, the piston and front cover may be scratched, and the front cover should be replaced as soon as possible. The piston can also be replaced at this time.
4,It will not work when pressed to the bottom, but it can work when it is lifted slightly.
Under normal circumstances, this phenomenon could be caused by wear and tear of the tool brush. It is necessary to perform inspection and replacement at this time.
5,Incorrect Thrust Bush replacement
Breaking hammers typically require Thrust Bush replacement, but if the Thrust Bush is not replaced properly, it is easy to cause failure. For example, after replacing the Thrust Bush，the piston is in a higher lever, causing some small reversing valve control oil circuits in the cylinder to close at the initial position, causing the breaker to fail.The most common problem is that the breaker does not strike when pressed down, but only after being slightly lifted. Original or regular Thrust Bush can be used to replace such failures.