When the hydraulic oil tank of the hydraulic pump fails to fill oil, it will cause various problems in the hydraulic system. The potential reasons for failure are analyzed as follows: 1. Insufficient oil level: One of the main reasons for oil injection failure is insufficient oil level in the hydraulic oil tank. If the oil level is too low, the pump may not be able to draw in a sufficient amount of oil for proper lubrication and cooling. Check the oil level regularly and make sure it stays within the recommended operating range. 2. Clogged or restricted oil filter: A clogged or restricted oil filter will prevent the flow of oil from the hydraulic tank to the pump. This can lead to insufficient oil supply and lead to oil injection failure. It is essential to clean or replace the oil filter according to the manufacturer's recommendations to prevent clogging and ensure proper oil flow. 3. Oil pump failure: Oil pump failure will cause oil injection failure. The pump may not be able to draw oil from the hydraulic tank, or it may not be able to deliver oil to the system at the required pressure. Check the oil pump for any mechanical problems or damage and repair or replace if necessary. 4. Air leakage in the suction line: Air leakage in the suction line connecting the hydraulic tank to the pump will disturb the oil flow. Air entering the system can displace oil and prevent it from reaching the pump efficiently. Check the suction line for any leaks, loose connections or damaged fittings. Repair or replace any faulty parts and ensure proper sealing. 5. Oil pollution: Contaminants in the hydraulic oil will hinder its flow and cause oil injection failure. Dirt, debris or particles that accumulate in the hydraulic reservoir can clog the pump air intake and restrict oil flow. Regularly monitor and maintain hydraulic fluid cleanliness by performing fluid analysis, filtering or changing the fluid as needed, and keeping the tank free of contamination. 90L130-KA-5-BC-80-S-3-C8-H-03-GBA-35-35-24 90L130KA5BC80S3C8H03GBA353524 90-L-130-KA-5-BC-80-S-3-C8-H-03-GBA-35-35-24 90L130KA5BC80S3C8H03GBA353524 90-L-130-KA-5-BC-80-S-3-C8-H-03-GBA-38-38-26 90L130KA5BC80S3C8H03GBA383826 90L130-KA-5-BC-80-S-3-C8-H-03-GBA-42-42-24 90L130KA5BC80S3C8H03GBA424224 90-L-130-KA-5-BC-80-S-3-C8-H-03-GBA-42-42-24 90L130KA5BC80S3C8H03GBA424224 90L130-KA-5-BC-80-S-3-C8-H-03-GBA-42-42-28 90L130KA5BC80S3C8H03GBA424228 90-L-130-KA-5-BC-80-S-3-C8-H-03-GBA-42-42-28 90L130KA5BC80S3C8H03GBA424228 90L130-KA-5-BC-80-S-3-C8-H-03-GBA-42-42-30 90L130KA5BC80S3C8H03GBA424230 90-L-130-KA-5-BC-80-S-3-C8-H-03-GBA-42-42-30 90L130KA5BC80S3C8H03GBA424230 90L130-KA-5-BC-80-S-3-C8-H-04-GBA-35-35-24 90L130KA5BC80S3C8H04GBA353524 6. Oil viscosity problem: Inappropriate oil viscosity will also lead to oil injection failure. If the oil is too viscous, it can impede the flow and make it difficult for the pump to draw the oil. On the other hand, if the oil viscosity is too low, it may not provide adequate lubrication and cooling. Consult the manufacturer for recommendations on correct oil viscosity and make sure it is within the specified range. 7. Pump cavitation: Cavitation in the pump can also cause oil injection failure. Cavitation occurs when the pressure drops below the vapor pressure of the oil, causing bubbles to form and collapse. This disturbs the oil flow and damages the pump. Check for signs of cavitation, such as unusual noise or vibration, and address root causes, such as insufficient fluid levels or restricted suction lines. 8. System overload: Excessive system load or operating conditions will bring additional pressure to the hydraulic pump and cause oil injection failure. If the pump cannot meet the needs of the system, it may have difficulty drawing and delivering oil effectively. Assess system loads and ensure pumps are properly sized and capable of meeting hydraulic requirements. 9. Pressure relief valve failure: Failure of the pressure relief valve will lead to oil injection failure. If the pressure relief valve is stuck closed, it restricts the flow of oil from the hydraulic tank to the pump. This can lead to insufficient oil supply and lead to oil injection failure. Inspect the pressure relief valve for any damage or malfunction and repair or replace if necessary. 10. Pump wear or damage: Over time, hydraulic pumps can wear or damage their internal components, such as rotors, vanes, or pistons. This wear reduces pump efficiency and affects the pump's ability to suck and deliver oil. Inspect the pump for signs of wear, damage, or leaks, and consider repairing or replacing the pump if necessary. 11. Improper pump installation: Improper installation of hydraulic pumps, including incorrect alignment, loose connections, or improper installation, can disrupt oil flow and cause oil injection failures. Make sure the pump is properly installed according to the manufacturer's guidelines and that all connections are tight and leak-free. 12. Electrical problems: For hydraulic pumps with electric motors, electrical problems can cause oil injection failure. Check the electrical connections, wiring and controls related to the pump motor. Make sure there is proper voltage supply, there are no loose connections, and the motor is running properly. 90-L-130-KA-5-BC-80-S-3-C8-H-04-GBA-35-35-24 90L130KA5BC80S3C8H04GBA353524 90L130-KA-5-BC-80-S-3-C8-H-04-GBA-38-38-24 90L130KA5BC80S3C8H04GBA383824 90-L-130-KA-5-BC-80-S-3-C8-H-04-GBA-38-38-24 90L130KA5BC80S3C8H04GBA383824 90L130-KA-5-BC-80-S-3-F1-H-00-GBA-38-23-30 90L130KA5BC80S3F1H00GBA382330 90-L-130-KA-5-BC-80-S-3-F1-H-00-GBA-38-23-30 90L130KA5BC80S3F1H00GBA382330 90L130-KA-5-BC-80-S-4-C8-H-03-GBA-35-35-24 90L130KA5BC80S4C8H03GBA353524 90-L-130-KA-5-BC-80-S-4-C8-H-03-GBA-35-35-24 90L130KA5BC80S4C8H03GBA353524 90L130-KA-5-BC-80-S-4-C8-H-04-GBA-32-32-28 90L130KA5BC80S4C8H04GBA323228 90-L-130-KA-5-BC-80-S-4-C8-H-04-GBA-32-32-28 90L130KA5BC80S4C8H04GBA323228 90-L-130-KA-5-CD-80-D-3-C8-L-03-GBA-42-42-24 90L130KA5CD80D3C8L03GBA424224 13. Temperature issues: Extreme temperatures can affect the performance of hydraulic pumps and cause oil injection failures. High temperatures cause the oil to break down and reduce lubrication, while low temperatures cause the oil to become more viscous, preventing normal oil flow. Make sure the operating temperature of the hydraulic system is within the recommended range and consider implementing temperature control measures, such as coolers or heaters, if necessary. 14. Improper maintenance: Insufficient or improper maintenance can lead to oil injection failure. Regular maintenance, including oil changes, filter changes, and overall system inspections, is essential to keep your hydraulic pumps and hydraulic tanks functioning properly. Follow the manufacturer's recommended maintenance plan and procedures. 15. System pollution: Contamination in the hydraulic system, such as dust, debris or water, will affect the performance of the pump and cause oil injection failure. Contaminants can clog filters, valves and pump components, disrupting oil flow. Implement appropriate contamination control measures, including regular fluid analysis, filtration and maintenance measures to keep the system clean and free of contaminants. It is important to perform a thorough inspection and analysis to determine the specific cause of a hydraulic tank fill failure. Consider consulting a hydraulics specialist or maintenance professional who can provide further guidance based on their expertise and experience with hydraulic systems and pumps.