Excavator hydraulic pump abnormal noise vibration maintenance solution

[BONOVO]

1. The suction pipe is blocked

Seventy percent chance. Very dangerous. It is very easy to appear after the excavator has been used for a long time. The reason is that the oil suction filter has not been cleaned and replaced for a long time, and it may also be because there is dirt entering the oil tank and causing the oil filter to be blocked.

Harmful consequences: Once the oil absorption is not smooth, the local vacuum phenomenon will be generated, so that the air originally dissolved in the oil is separated, and these air will cause great vibration to the equipment and cause premature damage to the parts of the excavator.

Solution: Replace the filter element according to the requirements of the technical manual, do not let dirt enter the hydraulic tank, check the suction pipe regularly, and solve the problem in time.

2. There is air in hydraulic pump

The possibility is 60%, the harm is great, once the oil is mixed with the air, cavitation and holes occur, not only resulting in excessive noise of the hydraulic pump, but also cause premature damage to the equipment.

Solution: Check the part where air may enter, and remove air mixed in the oil and air in the pipe.

3, oily viscosity is too large

The possibility is 50%, the harm is great, the viscosity of the oil is too large, mainly caused by overuse, and once it appears, it will make it difficult to absorb oil, it will cause local vacuum phenomenon, so that the air dissolved in the oil is separated, and these air make the equipment work to produce great vibration, so that the excavator parts are damaged prematurely. If the viscosity of the oil is too large, the filter element will fail early and the oil pump of the excavator will be damaged.

Solution: Check and replace the hydraulic oil in time as required.

4. The oil level in the hydraulic tank is too low

Low on fuel. 40% chance. Extremely dangerous. If the oil level is too low, the pump will not absorb enough, and some air will be inhaled, which will cause great vibration of the working equipment and premature damage to the parts of the excavator. The viscosity of the oil is too large, which will cause premature failure of the filter element and damage the oil pump of the excavator.

Solution: Often check whether the oil level in the hydraulic tank is within the normal range.

5, the bearing wear of the oil pump is too large

So there was a lot of noise. 30 percent chance. Average risk. Bearing wear mainly appears in those excavatorthat work for a long time, not only the noise is very large, but the various components of the excavatorare also weak

Solution: overhaul the oil pump.

6. The speed of hydraulic pump is too high

The possibility is 20%, the harm is general, the speed is too high not only the noise is too large, but also the premature damage of the hydraulic pump of the excavator. At this time, the various working devices of the excavatorhave normal performance.

Solution: Adjust the pump speed

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