GT hydraulic hammer is a widely used crushing tool in construction machinery, with its core component being the hydraulic system. The stable operation of the hydraulic system directly affects the working efficiency and service life of the hydraulic hammer. However, in actual use, various malfunctions may occur in the hydraulic system, causing the equipment to malfunction. This article will provide a detailed analysis of common faults and their solutions in the hydraulic system of GT hydraulic hammers, helping users quickly troubleshoot and solve problems.

　　1、 Common faults and cause analysis of hydraulic systems

　　1. Hydraulic hammer cannot work or works weakly

　　Possible reasons:

　　Insufficient hydraulic oil or poor oil quality: Insufficient hydraulic oil can lead to insufficient system pressure, and poor oil quality can affect the normal operation of hydraulic components.

　　Hydraulic pump malfunction: The hydraulic pump is damaged or its efficiency is reduced, making it unable to provide sufficient hydraulic oil flow and pressure.

　　Hydraulic valve malfunction: The control valve is stuck or damaged, causing hydraulic oil to not flow properly to the hydraulic hammer.

　　Hydraulic cylinder leakage: The internal seals of the hydraulic cylinder are damaged, causing hydraulic oil leakage and ineffective pressure transmission.

　　2. Unstable operation or insufficient impact force of hydraulic hammer

　　Possible reasons:

　　Hydraulic oil temperature too high: Excessive oil temperature can cause a decrease in hydraulic oil viscosity, affecting system pressure.

　　There is air in the hydraulic system: Air entering the hydraulic system can cause unstable operation of the hydraulic hammer and insufficient impact force.

　　Hydraulic oil contamination: Impurities in hydraulic oil can clog hydraulic valves or damage hydraulic components, affecting system performance.

　　Internal wear of hydraulic hammer: The piston, cylinder and other components inside the hydraulic hammer wear, resulting in a decrease in impact force.

　　3. Excessive noise in the hydraulic system

　　Possible reasons:

　　Wear of hydraulic pump: Internal wear of hydraulic pump can cause loud noise.

　　Air mixed into hydraulic oil: Air entering the hydraulic system will cause cavitation, leading to noise.

　　Loose or damaged hydraulic pipelines: Loose or damaged pipelines can cause vibration and noise.

　　Hydraulic valve sticking: Control valve sticking can cause poor hydraulic oil flow and generate noise.

　　4. Hydraulic system leakage

　　Possible reasons:

　　Aging or damage of seals: Aging or damage of seals in hydraulic systems can cause hydraulic oil leakage.

　　Loose pipeline connections: Loose pipeline connections can cause hydraulic oil leakage.

　　Damage to hydraulic cylinder or valve: Internal damage to hydraulic cylinder or valve can cause hydraulic oil leakage.

　　2、 Solution to Hydraulic System Malfunctions

　　1. Solution for hydraulic hammer not working or working weakly

　　Check hydraulic oil: First, check the hydraulic oil level to ensure that the hydraulic oil is sufficient. If the hydraulic oil is insufficient, it should be added in a timely manner. At the same time, check the quality of the hydraulic oil. If the oil quality deteriorates, replace the hydraulic oil in a timely manner.

　　Check the hydraulic pump: If the hydraulic pump fails, it should be removed for inspection and maintenance. If the hydraulic pump is severely damaged, it should be replaced in a timely manner.

　　Check the hydraulic valve: Remove the hydraulic valve for inspection and clean the impurities on the valve core and body. If the hydraulic valve is damaged, it should be replaced in a timely manner.

　　Check hydraulic cylinder: Remove the hydraulic cylinder for inspection and replace damaged seals. If the internal wear of the hydraulic cylinder is severe, it should be replaced in a timely manner. 2. Solutions for unstable operation or insufficient impact force of hydraulic hammers

　　Check hydraulic oil temperature: If the hydraulic oil temperature is too high, the cooling device of the hydraulic system should be checked to ensure its normal operation. Meanwhile, avoid prolonged high load operation of the hydraulic system.

　　Exclude air from the hydraulic system: Open the exhaust valve of the hydraulic system to expel the air from the system. If air enters the system severely, check the oil suction pipeline of the hydraulic pump to ensure good sealing.

　　Replace hydraulic oil: If the hydraulic oil is severely contaminated, it should be replaced in a timely manner and the hydraulic system should be cleaned.

　　Check the internal components of the hydraulic hammer: Remove the hydraulic hammer for inspection and replace worn pistons, cylinder bodies, and other components. 3. Solution for excessive hydraulic system noise: Check the hydraulic pump: Remove the hydraulic pump for inspection and replace worn hydraulic pump components. If the hydraulic pump is severely damaged, it should be replaced in a timely manner.

　　Exclude air from the hydraulic system: Open the exhaust valve of the hydraulic system to expel the air from the system. If air enters the system severely, check the oil suction pipeline of the hydraulic pump to ensure good sealing.

　　Check the hydraulic pipeline: Check the hydraulic pipeline to ensure that it is firmly connected, without looseness or damage. If the pipeline is damaged, it should be replaced in a timely manner. Check the hydraulic valve: Remove the hydraulic valve for inspection and clean the impurities on the valve core and body. If the hydraulic valve is severely stuck, it should be replaced in a timely manner.

　　4. Solution to hydraulic system leakage

　　Replace seals: Remove seals from the hydraulic system for inspection and replace aging or damaged seals.

　　Tighten the pipeline connection: Check the connection of the hydraulic pipeline to ensure that it is firmly connected. If the connection is loose, it should be tightened in a timely manner.

　　Replace hydraulic cylinder or valve: If the hydraulic cylinder or valve is damaged internally, it should be replaced in a timely manner.

　　3、 Suggestions for maintenance of hydraulic system

　　In order to reduce the occurrence of hydraulic system failures and extend the service life of hydraulic hammers, it is recommended that users regularly perform the following maintenance work:

　　Regularly check hydraulic oil: Regularly check the level and quality of hydraulic oil, and add or replace hydraulic oil in a timely manner.

　　Keep the hydraulic system clean: Avoid hydraulic oil contamination and regularly clean the hydraulic system.

　　Regularly inspect hydraulic components: Regularly check the operation of hydraulic pumps, valves, cylinders, and other components, and replace worn or damaged parts in a timely manner.

　　Avoiding hydraulic system overload: Avoid prolonged high load operation of the hydraulic system and prevent excessive hydraulic oil temperature.

　　Regular exhaust: Regularly open the exhaust valve of the hydraulic system to exhaust the air in the system.

　　The hydraulic system failure of GT hydraulic hammer may affect the normal use of the equipment, but through correct troubleshooting and maintenance, the occurrence of failures can be effectively reduced. Users should regularly check the operation of the hydraulic system, promptly address any issues found, and ensure the stable operation of the hydraulic hammer. Through the above analysis and solutions, we hope to help users better maintain and use GT hydraulic hammers, extend their service life, and improve work efficiency.