When analyzing a combine harvester hydraulic pump failure, it is important to consider various factors and potential problems that may arise. The following are some common fault analysis points of combine harvester hydraulic pumps: 1. Insufficient hydraulic pressure: If the hydraulic pump cannot provide enough pressure, it will cause the performance of the hydraulic system to decline or fail completely. Possible causes of this problem include worn pumps, blocked or restricted inlet or outlet, air leaks in the system, or improperly adjusted relief valves. 2. Excessive noise and vibration: Abnormal noise and excessive vibration indicate that there is a problem inside the hydraulic pump. Potential causes include damaged or worn bearings, cavitation from insufficient fluid supply, loose or worn pump components, or misalignment between the pump and motor. 3. Fluid Leakage: Hydraulic fluid leakage is a common problem in hydraulic systems. Defective seals, gaskets or connections can cause leaks. Check the pump and surrounding area for signs of oil leakage, such as oil stains or moisture. Prompt resolution of leaks is critical to preventing further damage and maintaining proper functioning of hydraulic systems. 4. Overheating: Overheating of hydraulic pumps can lead to inefficiency and potential damage to the system. Causes of overheating can include low fluid levels, incorrect fluid viscosity, cooling system failure, or excessive hydraulic system load. Monitor pump temperature and address any overheating issues promptly to prevent further damage. 90R130-KA-5-NN-80-S-4-C8-H-03-GBA-20-20-24 90R130KA5NN80S4C8H03GBA202024 90-R-130-KA-5-NN-80-S-4-C8-H-00-GBA-38-38-24 90R130KA5NN80S4C8H00GBA383824 90-R-130-KA-5-NN-80-S-4-C8-F-05-GBA-32-32-24 90R130KA5NN80S4C8F05GBA323224 90R130-KA-5-NN-80-S-4-C8-F-05-GBA-32-32-24 90R130KA5NN80S4C8F05GBA323224 90-R-130-KA-5-NN-80-S-3-F1-H-03-GBA-42-42-24 90R130KA5NN80S3F1H03GBA424224 90R130-KA-5-NN-80-S-3-F1-H-03-GBA-42-42-24 90R130KA5NN80S3F1H03GBA424224 90-R-130-KA-5-NN-80-S-3-F1-H-03-GBA-35-35-24 90R130KA5NN80S3F1H03GBA353524 90R130-KA-5-NN-80-S-3-F1-H-03-GBA-35-35-24 90R130KA5NN80S3F1H03GBA353524 90-R-130-KA-5-NN-80-S-3-F1-H-03-GBA-30-30-24 90R130KA5NN80S3F1H03GBA303024 90R130-KA-5-NN-80-S-3-F1-H-03-GBA-30-30-24 90R130KA5NN80S3F1H03GBA303024 5. Inconsistent or unstable operation: If the hydraulic pump is inconsistent or unstable, it will affect the performance of the combine harvester. Possible causes of this problem include air entrapment in the system, a malfunctioning control valve, worn pump components, or contaminated hydraulic fluid. Proper diagnosis and troubleshooting are critical to identifying and correcting the root cause. 6. Excessive wear of pump components: Excessive wear of pump components can lead to a decrease in hydraulic pump efficiency and eventual failure. Factors that contribute to wear include insufficient lubrication, contaminated hydraulic fluid, high operating pressure, or improper maintenance. Regularly inspect and maintain the hydraulic pump, detect wear and tear in time, and replace worn parts in time. 7. Insufficient flow: Insufficient hydraulic pump flow will lead to a decrease in hydraulic function performance. Potential causes include damaged or worn pumps, blocked inlets or outlets, faulty control valves, or restricted hydraulic lines. Check for blockages or restrictions in the hydraulic system and address accordingly. 8. Cavitation: Cavitation occurs when hydraulic oil evaporates due to low pressure inside the pump, resulting in the formation of air bubbles. Cavitation can damage the pump and result in reduced performance. Potential causes of cavitation include restricted or insufficient fluid supply, worn pumps, or clogged inlet filters. Check fluid supply, check pump for wear, clean or replace filter if necessary. 9. Unusual noise during operation: Unusual or abnormal noise during pump operation may indicate an underlying problem. Listen for knocking, grinding, or whining that may be caused by worn bearings, damaged pump components, or misalignment. Perform a thorough inspection of the pump and related components to determine and resolve the source of the unusual noise. 10. Excessive pump load: The hydraulic pump of the combine harvester may be subjected to excessive load, especially during heavy operation. This can lead to increased pressure and potential failure of the pump. Factors that can cause overloading include oversizing hydraulic tools, improperly adjusted control valves, or excessive system pressure. Make sure the hydraulic system is properly matched to the equipment and execution requirements and adjust the system settings within the manufacturer's recommended specifications. 11. Contaminated hydraulic fluid: Contaminated hydraulic fluid can lead to pump failure and reduced system performance. Common contaminants include dust, debris, water or air. Regularly monitor and maintain hydraulic fluid quality according to the manufacturer's recommended maintenance schedule, which includes regular fluid checks, filter changes, and proper fluid handling procedures. 90-R-130-KA-5-NN-80-S-3-F1-F-04-GBA-38-38-24 90R130KA5NN80S3F1F04GBA383824 90R130-KA-5-NN-80-S-3-F1-F-04-GBA-38-38-24 90R130KA5NN80S3F1F04GBA383824 90-R-130-KA-5-NN-80-S-3-F1-F-03-GBA-42-42-24 90R130KA5NN80S3F1F03GBA424224 90R130-KA-5-NN-80-S-3-F1-F-03-GBA-42-42-24 90R130KA5NN80S3F1F03GBA424224 90-R-130-KA-5-NN-80-S-3-C8-H-03-GBA-42-42-24 90R130KA5NN80S3C8H03GBA424224 90R130-KA-5-NN-80-S-3-C8-H-03-GBA-42-42-24 90R130KA5NN80S3C8H03GBA424224 90-R-130-KA-5-NN-80-S-3-C8-H-03-GBA-38-38-24 90R130KA5NN80S3C8H03GBA383824 90R130-KA-5-NN-80-S-3-C8-H-03-GBA-38-38-24 90R130KA5NN80S3C8H03GBA383824 90-R-130-KA-5-NN-80-S-3-C8-H-03-GBA-35-35-24 90R130KA5NN80S3C8H03GBA353524 90R130-KA-5-NN-80-S-3-C8-H-03-GBA-35-35-24 90R130KA5NN80S3C8H03GBA353524 12. Electrical or control system problems: In some cases, failures in electrical or control systems can affect the performance of hydraulic pumps. Miswiring, faulty sensors, or faulty control systems can interrupt pump operation. Perform a thorough inspection of the electrical and control systems, check for loose connections, damaged wiring, or faulty sensors, and address any issues accordingly. 13. Lack of Maintenance: Insufficient or improper maintenance can lead to pump failure and failure. The manufacturer's recommended maintenance schedule, including periodic inspection, lubrication, and component replacement, must be followed. Proper maintenance practices will help identify and resolve potential problems before they escalate and cause serious pump damage. 14. Operator error: In some cases, improper operation or misuse of hydraulic systems can lead to pump failure. Make sure the operator is trained in the proper use and handling of the hydraulic system and follows recommended operating procedures. Improper operation, such as excessive speed or sudden changes in hydraulic functions, can cause increased pressure and potential damage to the pump. Remember that troubleshooting a hydraulic pump requires careful analysis, system checks and following safety procedures. If in doubt or unable to resolve a problem, it is recommended to consult a qualified hydraulic technician or seek assistance from the manufacturer's service support.