The excavator hydraulic system is one of the most important parts in the operation of the excavator. During the use of the excavator, the hydraulic system may malfunction, affecting the normal operation of the excavator. The following are some common excavator hydraulic system failures and their analysis.
1. Hydraulic oil temperature is too high
The causes include: 1. Insufficient hydraulic oil in the hydraulic oil pump or hydraulic oil tank; 2. There is a blockage in the hydraulic oil radiator. 3. The viscosity of the hydraulic oil is too high.
Reference solutions: 1. Check whether the amount of hydraulic oil is sufficient and replenish it in time. 2. Clean the hydraulic oil radiator to ensure its normal operation. 3. Replace the hydraulic oil with appropriate viscosity.
2. Hydraulic oil leakage
The causes include: 1. The hydraulic oil seal is aged or damaged. 2. The hydraulic pipe joint is loose or damaged.
Reference solutions: 1. Replace aging or damaged hydraulic oil seals in time. 2. Tighten the hydraulic pipe joint.
3. Abnormal noise of hydraulic pump
The causes include: 1. The internal components of the hydraulic pump are damaged or worn. 2. There is a problem with the air inlet of the hydraulic pump.
Reference solutions: 1. Replace damaged or worn internal components of the hydraulic pump. 2. Clean the air inlet of the hydraulic pump and remove foreign matter.
4. The hydraulic system is not sensitive in action
The causes include: 1. Insufficient flow of the hydraulic pump. 2. The hydraulic oil is contaminated.
Reference solutions: 1. Check whether the flow rate of the hydraulic pump meets the requirements. 2. Change the hydraulic oil regularly to ensure that the hydraulic oil is clean.
5. The hydraulic cylinder cannot expand or contract
The causes include: 1. The hydraulic cylinder seal is aging or damaged 2. There is gas inside the hydraulic cylinder.
Reference solutions: 1. Replace aging or damaged hydraulic cylinder seals. 2. Remove the gas inside the hydraulic cylinder.
In actual operation, there are many other situations and failures in the excavator hydraulic system, which need to be analyzed according to the specific situation and corresponding maintenance measures should be taken in a timely manner. Regular inspection and maintenance of the hydraulic system can effectively prevent the possibility of hydraulic system failure and ensure the normal operation of the excavator.
