Danfoss piston pump hydraulic speed control systems can experience malfunctions that affect their performance and efficiency. Some common causes and solutions for these failures include: Overheating: Overheating of the hydraulic fluid can cause the system to malfunction. This can be caused by a number of things, such as too high system pressure, incorrect fluid viscosity, or a clogged or dirty filter. Solution: Check the system pressure to make sure it is within the recommended range. Check the viscosity of the hydraulic fluid to make sure it is suitable for the system. Check the filter for any blockage or contamination and replace if necessary. Leaks: Hydraulic fluid leaks can be caused by damaged seals or gaskets, worn components, or loose connections. Solution: Identify the source of the leak and repair or replace the affected component. Tighten any loose connections and inspect the system for any other signs of wear or damage. Pump cavitation: Pump cavitation occurs when the hydraulic fluid is inflated with air, causing the pump to vibrate and make squealing noises. This can be caused by a low fluid level, a clogged or dirty filter, or a damaged pump. Solution: Check fluid level and top up if necessary. Check the filter for any blockage or contamination and replace if necessary. Inspect the pump for any signs of damage or wear and repair or replace as necessary. Slow or erratic operation: Slow or erratic operation of a hydraulic speed control system can be caused by a variety of factors, such as worn components, incorrect system pressure, or an improperly adjusted speed control valve. Solution: Check the system pressure to make sure it is within the recommended range. Inspect system components for any signs of wear or damage and repair or replace as necessary. Check the adjustment of the governor valve and adjust if necessary. 90-L-100-KN-1-BC-80-S-4-S1-E-03-GBA-35-35-24 90L100KN1BC80S4S1E03GBA353524 90L100-KN-1-BC-80-S-4-S1-E-03-GBA-35-35-24 90L100KN1BC80S4S1E03GBA353524 90-L-100-KN-1-BC-80-S-4-S1-E-03-GBA-42-42-24 90L100KN1BC80S4S1E03GBA424224 90-L-100-KN-1-CD-60-D-4-F1-L-03-GBA-35-35-28 90L100KN1CD60D4F1L03GBA353528 90L100-KN-1-CD-60-D-4-F1-L-03-GBA-35-35-28 90L100KN1CD60D4F1L03GBA353528 90-L-100-KN-1-CD-60-P-3-F1-E-03-GBA-35-35-24 90L100KN1CD60P3F1E03GBA353524 90-L-100-KN-1-CD-60-S-4-S1-E-03-GBA-35-35-24 90L100KN1CD60S4S1E03GBA353524 90-L-100-KN-1-CD-80-D-4-S1-L-03-GBA-35-35-24 90L100KN1CD80D4S1L03GBA353524 90-L-100-KN-1-CD-80-P-3-C7-E-03-GBA-35-35-24 90L100KN1CD80P3C7E03GBA353524 90-L-100-KN-1-CD-80-P-4-F1-E-03-GBA-42-42-24 90L100KN1CD80P4F1E03GBA424224 Excessive Noise: Excessive noise from a hydraulic speed control system can be caused by a variety of factors, such as damaged bearings, worn components, or incorrect fluid viscosity. Solution: Check system components for any signs of wear or damage and repair or replace as necessary. Check the viscosity of the hydraulic fluid to make sure it is suitable for the system. Inspect the bearings for any signs of damage or wear and replace if necessary. Overall, regular maintenance and inspection of hydraulic speed control systems can help identify and prevent failures. It is important to follow the manufacturer's recommended maintenance plan and procedures to keep the system running efficiently and reliably. Inconsistent flow: Inconsistent flow can be caused by a variety of factors, such as damaged or worn components, clogged filters, or incorrect system pressure. Solution: Check system components for any signs of wear or damage and repair or replace as necessary. Check the filter for any blockage or contamination and replace if necessary. Check the system pressure to make sure it is within the recommended range. System Vibration: System vibration can be caused by a variety of factors, such as misaligned components, worn bearings, or incorrect system pressure. Solution: Check system components for any signs of misalignment or damage and repair or replace as necessary. Inspect the bearings for any signs of wear or damage and replace if necessary. Check the system pressure to make sure it is within the recommended range. Slow Response Time: Slow response time can be caused by a variety of factors, such as an improperly adjusted speed control valve, worn components, or incorrect system pressure. Solution: Check the adjustment of the speed control valve and adjust it if necessary. Inspect system components for any signs of wear or damage and repair or replace as necessary. Check the system pressure to make sure it is within the recommended range. Contamination: Contamination of hydraulic fluid can be caused by a variety of factors, such as dirt, debris or moisture entering the system. Solution: Check system components for any signs of wear or damage and repair or replace as necessary. Check the filter for any blockage or contamination and replace if necessary. Make sure the hydraulic fluid is clean and free of contaminants. Overall, regular maintenance and inspection of hydraulic speed control systems can help identify and prevent failures. It is important to follow the manufacturer's recommended maintenance plan and procedures to keep the system running efficiently and reliably. Leaks: Leaks in hydraulic systems can be caused by damaged seals, hoses or fittings. 90-L-100-KN-1-CD-80-R-3-S1-E-03-GBA-32-32-24 90L100KN1CD80R3S1E03GBA323224 90-L-100-KN-1-CD-80-R-3-S1-F-03-GBA-32-32-24 90L100KN1CD80R3S1F03GBA323224 90-L-100-KN-1-CD-80-R-4-F1-E-00-GBA-35-35-24 90L100KN1CD80R4F1E00GBA353524 90-L-100-KN-1-CD-80-R-4-F1-E-03-GBA-38-38-24 90L100KN1CD80R4F1E03GBA383824 90-L-100-KN-1-CD-80-R-4-F1-E-03-GBA-42-14-24 90L100KN1CD80R4F1E03GBA421424 90L100-KN-1-CD-80-R-4-F1-E-03-GBA-42-14-24 90L100KN1CD80R4F1E03GBA421424 90-L-100-KN-1-CD-80-R-4-F1-F-03-GBA-38-14-24 90L100KN1CD80R4F1F03GBA381424 90-L-100-KN-1-CD-80-R-4-S1-E-03-GBA-35-35-24 90L100KN1CD80R4S1E03GBA353524 90-L-100-KN-1-CD-80-R-4-S1-E-03-GBA-42-42-24 90L100KN1CD80R4S1E03GBA424224 90-L-100-KN-1-CD-80-S-4-S1-E-03-GBA-35-35-24 90L100KN1CD80S4S1E03GBA353524 Solution: Find out where the leak is, and repair or replace damaged parts. Check all hoses and fittings for any signs of wear or damage and replace if necessary. Overheating: Overheating can be caused by a variety of factors, such as clogged filters, low fluid levels, or high system pressure. Solution: Check the filter for any blockage or contamination and replace if necessary. Check the fluid level and add more if necessary. Check the system pressure to make sure it is within the recommended range. If the problem persists, consult a qualified technician to check the system for any potential problems. Cavitation: Cavitation occurs when air bubbles form in hydraulic fluid, which can damage system components. Solution: Check fluid level and add more if necessary. Check the system for any leaks and repair if necessary. Check the filter for any blockage or contamination and replace if necessary. Consult a qualified technician to check the system for any potential problems. Overall, regular maintenance and inspection of hydraulic speed control systems can help identify and prevent failures. It is important to follow the manufacturer's recommended maintenance plan and procedures to keep the system running efficiently and reliably.