If the pressure of the displacement pump fails to increase, there may be several potential causes. Here are some troubleshooting steps to help identify and resolve issues: 1. Check system requirements: Verify that the required pressure level is within the capability of the piston pump. Refer to the manufacturer's specifications and documentation to ensure that the pump is rated for the required pressure range. If the pump is not designed for the pressure required, it may be necessary to upgrade to a higher rated pump. 2. Verify system load: Assess the system load to ensure it is within the capacity of the pump. If the system requires more pressure than the pump can provide, it may be necessary to upgrade the pump or adjust system requirements accordingly. 3. Check the inlet condition: Check the inlet condition of the pump, including the suction line and fluid supply. Make sure the pump receives sufficient and unrestricted fluid flow from the reservoir. Check the suction line for any restrictions, blockages or air leaks that could affect pump performance. Solve any problems found to ensure proper fluid supply. ER-R-130B-PC-15-NN-NN-N-3-K5VP-A1N-AAA-NNN-NNN ERR130BPC15NNNNNN3K5VPA1NAAAANNNNNNN ER-R-130B-PC-14-NN-NN-N-3-S2NP-A1N-AAA-NNN-NNN ERR130BPC14NNNNN3S2NPA1NAAANNNNNNN ER-R-130B-PC-14-NN-NN-N-3-S2NL-A1N-AAA-NNN-NNN ERR130BPC14NNNNN3S2NLA1NAAAANNNNNNN ER-R-130B-PC-14-NN-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERR130BPC14NNNNN3S1CPA1NNNNNNNNNNNN ER-R-130B-PC-14-NN-NN-N-3-S1AP-A1N-NNN-NNN-NNN ERR130BPC14NNNNN3S1APA1NNNNNNNNNNNN ER-R-130B-PC-14-NN-NN-N-3-K5BP-A1N-NNN-NNN-NNN ERR130BPC14NNNNNN3K5BPA1NNNNNNNNNNNN ER-R-130B-PC-14-NN-NN-N-3-K5AP-A1N-NNN-NNN-NNN ERR130BPC14NNNNN3K5APA1NNNNNNNNNNNN ER-R-130B-PC-13-NN-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERR130BPC13NNNNN3S1NPA1NNNNNNNNNNNN ER-R-130B-PC-13-NN-NN-N-3-K5NL-A1N-NNN-NNN-NNN ERR130BPC13NNNNN3K5NLA1NNNNNNNNNNNN ER-R-130B-PC-11-NN-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERR130BPC11NNNNNN3K5NPA1NNNNNNNNNNNN ER-R-130B-PC-10-NN-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERR130BPC10NNNNN3K5NPA1NNNNNNNNNNNN ER-R-130B-PC-10-NN-NN-N-3-K5NP-A1N-AAA-NNN-NNN ERR130BPC10NNNNN3K5NPA1NAAANNNNNNN ER-R-130B-PC-10-NN-NN-N-3-K5NL-A1N-NNN-NNN-NNN ERR130BPC10NNNNNN3K5NLA1NNNNNNNNNNNN ER-R-130B-PC-10-NN-NN-N-3-K5NL-A1N-AAA-NNN-NNN ERR130BPC10NNNNN3K5NLA1NAAANNNNNNN ER-R-130B-PC-10-NN-NN-N-3-K5BP-A1N-AAA-NNN-NNN ERR130BPC10NNNNNN3K5BPA1NAAAANNNNNNN ER-R-130B-LS-28-34-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERR130BLS2834NNN3S1NPA1NNNNNNNNNNNN ER-R-130B-LS-28-28-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERR130BLS2828NNN3S1NPA1NNNNNNNNNNNN ER-R-130B-LS-28-25-NN-N-3-S4RP-A1N-NNN-NNN-NNN ERR130BLS2825NNN3S4RPA1NNNNNNNNNNNN ER-R-130B-LS-28-25-NN-N-3-S4NP-A1N-NNN-NNN-NNN ERR130BLS2825NNN3S4NPA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S4WP-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S4WPA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S4CP-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S4CPA1NNNNNNNNNNNN 4. Check pump components: Check pump components such as pistons, cylinders, valves, and seals for wear, damage, or failure. Worn or damaged components can cause internal leaks and result in a drop in pressure output. Replace any worn or faulty components as necessary. 5. Adjust swash plate angle or stroke: If the piston pump has an adjustable swash plate angle or stroke, verify that it is properly set for the desired pressure output. An incorrect setting will limit the ability of the pump to reach higher pressures. Adjust the swashplate angle or stroke to achieve the desired pressure according to the manufacturer's guidelines. 6. Check control valves: Check any control valves in the system that may be affecting the pressure output. Make sure the control valve is working properly, not causing any pressure drops, and is properly adjusted to achieve the desired pressure range. Clean, repair, or replace any faulty control valves as necessary. 7. Check the drive power supply: Check the power supply of the pump drive motor. Make sure the motor is receiving the correct voltage and running at the desired speed. Insufficient power supply or motor problems may limit the pump's ability to generate higher pressures. Address any power or motor related issues accordingly. 8. Assess system back pressure: Assess system back pressure, which limits the ability of the pump to achieve higher pressures. Check for any restrictions, narrow passages, or improperly adjusted pressure controls that could cause excessive back pressure. Adjust or replace the pressure control as necessary to achieve the desired pressure range. ER-R-130B-LS-28-20-NN-N-3-S4CP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S4CPA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S4BP-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S4BPA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S4AP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S4APA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S2WP-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S2WPA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S2WP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S2WPA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S2VP-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S2VPA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S2RP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S2RPA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S2NL-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S2NLA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S2CP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S2CPA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S2BP-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S2BPA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S2AP-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S2APA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S1RP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S1RPA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S1NP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S1NPA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S1CP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S1CPA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERR130BLS2820NNN3S1BPA1NNNNNNNNNNNN ER-R-130B-LS-28-20-NN-N-3-S1BP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S1BPA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-S1AP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3S1APA1NAAANNNNNN ER-R-130B-LS-28-20-NN-N-3-K5RP-A1N-AAA-NNN-NNN ERR130BLS2820NNN3K5RPA1NAAANNNNNN ER-R-130B-LS-28-18-NN-N-3-K5BP-A1N-NNN-NNN-NNN ERR130BLS2818NNN3K5BPA1NNNNNNNNNNNN ER-R-130B-LS-27-26-NN-N-3-S4CP-A1N-NNN-NNN-NNN ERR130BLS2726NNN3S4CPA1NNNNNNNNNNNN ER-R-130B-LS-27-20-NN-N-3-S2CP-A1N-AAA-NNN-NNN ERR130BLS2720NNN3S2CPA1NAAANNNNNN 9. Consult the manufacturer or service provider: If the troubleshooting steps above do not resolve the issue, it is recommended to consult the manufacturer's documentation or contact the manufacturer or a qualified service provider for further assistance. They can provide specific troubleshooting steps or suggest further action based on their expertise and knowledge of the piston pump. 10. Check the pressure relief valve: Check the condition and setting of the pressure relief valve in the hydraulic system. A faulty or improperly adjusted relief valve can limit the pressure output of the pump. Make sure the relief valve is set to the desired pressure range and is functioning properly. Adjust or replace the safety valve if necessary. 11. Evaluate oil viscosity: Verify that the viscosity of the hydraulic oil is within the recommended range specified by the pump manufacturer. If the oil is too viscous, it creates drag and prevents pressure from building up. Consider using an oil of the proper viscosity grade to ensure optimum pump performance. 12. Check for air in the system: Air trapped in the hydraulic system can prevent the pump from generating pressure. Vent the system to remove any air bubbles or perform a proper priming to ensure the system is free of air. This helps improve stress production. 13. Check pump seals and valves: Worn or damaged seals and valves in the pump can cause pressure loss. Check these parts for any signs of wear, leaks, or improper installation. Replace worn seals or faulty valves to restore normal pressure production. ER-R-130B-LS-27-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERR130BLS2720NNN3S1BPA1NNNNNNNNNNNN ER-R-130B-LS-26-30-NN-N-3-S1BP-A1N-AAA-NNN-NNN ERR130BLS2630NNN3S1BPA1NAAANNNNNN ER-R-130B-LS-26-25-NN-N-3-S1NL-A1N-NNN-NNN-NNN ERR130BLS2625NNN3S1NLA1NNNNNNNNNNNN ER-R-130B-LS-26-25-NN-N-3-S1AP-A1N-NNN-NNN-NNN ERR130BLS2625NNN3S1APA1NNNNNNNNNNNN ER-R-130B-LS-26-23-NN-N-3-S2NL-A1N-NNN-NNN-NNN ERR130BLS2623NNN3S2NLA1NNNNNNNNNNNN ER-R-130B-LS-26-21-NN-N-3-S4NP-A1N-NNN-NNN-NNN ERR130BLS2621NNN3S4NPA1NNNNNNNNNNNN ER-R-130B-LS-26-21-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERR130BLS2621NNN3S1NPA1NNNNNNNNNNNN ER-R-130B-LS-26-20-NN-N-3-S4CP-A1N-NNN-NNN-NNN ERR130BLS2620NNN3S4CPA1NNNNNNNNNNNN ER-R-130B-LS-26-20-NN-N-3-S1RP-A1N-AAA-NNN-NNN ERR130BLS2620NNN3S1RPA1NAAANNNNNN ER-R-130B-LS-26-20-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERR130BLS2620NNN3S1NPA1NNNNNNNNNNNN ER-R-130B-LS-26-20-NN-N-3-S1N1-A1N-AAA-NNN-NNN ERR130BLS2620NNN3S1N1A1NAAANNNNNN ER-R-130B-LS-26-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERR130BLS2620NNN3S1BPA1NNNNNNNNNNNN ER-R-130B-LS-26-20-NN-N-3-S1AP-A1N-AAA-NNN-NNN ERR130BLS2620NNN3S1APA1NAAANNNNNN ER-R-130B-LS-26-20-NN-N-3-K5NL-A1N-NNN-NNN-NNN ERR130BLS2620NNN3K5NLA1NNNNNNNNNNNN ER-R-130B-LS-26-10-NN-N-3-S2NL-A1N-NNN-NNN-NNN ERR130BLS2610NNN3S2NLA1NNNNNNNNNN ER-R-130B-LS-25-30-NN-N-3-S4NP-A1N-NNN-NNN-NNN ERR130BLS2530NNN3S4NPA1NNNNNNNNNNNN ER-R-130B-LS-25-30-NN-N-3-S2NP-A1N-NNN-NNN-NNN ERR130BLS2530NNN3S2NPA1NNNNNNNNNNNN ER-R-130B-LS-25-30-NN-N-3-S1NP-A1N-AAA-NNN-NNN ERR130BLS2530NNN3S1NPA1NAAANNNNNN ER-R-130B-LS-25-28-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERR130BLS2528NNN3S1NPA1NNNNNNNNNNNN ER-R-130B-LS-25-28-NN-N-3-S1AP-A1N-NNN-NNN-NNN ERR130BLS2528NNN3S1APA1NNNNNNNNNNNN ER-R-130B-LS-25-25-NN-N-3-S4RP-A1N-AAA-NNN-NNN ERR130BLS2525NNN3S4RPA1NAAANNNNNN 14. Evaluate pump speed: Verify that the pump is running at the correct speed as specified by the manufacturer. Insufficient pump speed will limit pressure output. Adjust speed to recommended range or resolve any motor or drive issues that may be affecting pump speed. 15. Consider pump sizing: Evaluate whether the pump is sized for the application and system requirements. If the pump is undersized, it may have difficulty generating the required pressure. Consult the manufacturer for recommendations or consider upgrading to a higher capacity pump if necessary. 16. Check pipes and connections: Check hydraulic pipes and connections for any restrictions, blockages or leaks that could affect pressure generation. Make sure the pipe is the right size and properly aligned. Address any issues found, such as clearing blockages, repairing leaks, or improving piping design. 17. Consult the manufacturer or service provider: If the above troubleshooting steps do not resolve the issue, it is recommended to consult the manufacturer's documentation or contact the manufacturer or a qualified service provider for further assistance. They can provide specific troubleshooting steps or suggest further action based on their expertise and knowledge of the piston pump. Remember to always prioritize safety and follow proper procedures throughout the troubleshooting process. If in doubt or if the problem persists, it is recommended to seek professional help from the manufacturer or a qualified service provider to effectively resolve the problem.