Replacing the working fluid (hydraulic oil) in a hydraulic pump involves several steps. Below are general guidelines to help you through the process: 1. Safety Precautions: Before starting any maintenance work, make sure the hydraulic system is depressurized and the pump is turned off. Use appropriate personal protective equipment (PPE) to protect yourself from potential hazards. 2. Drain the system: Locate the drain plug or valve on the hydraulic pump or system and open it to drain the existing hydraulic fluid. Make sure you have a suitable container to collect the liquid. If the system has multiple components, such as cylinders or valves, you may also need to drain them individually. 3. Flush the system (optional): If the existing hydraulic fluid becomes contaminated or if you are changing to a different type of fluid, it may be beneficial to flush the system. This involves circulating a cleaning fluid or flushing agent through the system to remove any residual contamination. Follow the manufacturer's directions or consult a professional for specific guidance on flushing procedures. 4. Remove the reservoir: In some hydraulic systems, the reservoir can be removed for easy access and cleaning. Disconnect any hoses or fittings from the reservoir and carefully remove it from the system. Check the tank for any sediment or debris and clean it thoroughly before reinstalling. 5. Clean the system: Take this opportunity to clean the system components, including the reservoir, filter, and any other accessible parts. Remove any dirt, debris or contamination with a lint-free cloth or compressed air. Make sure all surfaces are clean before proceeding. 90R130-KA-1-NN-80-R-4-F1-F-03-GBA-32-32-24 90R130KA1NN80R4F1F03GBA323224 90-R-130-KA-1-NN-80-R-4-F1-F-03-GBA-23-29-24 90R130KA1NN80R4F1F03GBA232924 90-R-130-KA-1-NN-80-R-3-F1-H-03-GBA-35-35-24 90R130KA1NN80R3F1H03GBA353524 90R130-KA-1-NN-80-R-3-F1-H-03-GBA-35-35-24 90R130KA1NN80R3F1H03GBA353524 90-R-130-KA-1-NN-80-R-3-F1-F-03-GBA-38-38-24 90R130KA1NN80R3F1F03GBA383824 90-R-130-KA-1-NN-80-R-3-F1-F-00-GBA-35-35-24 90R130KA1NN80R3F1F00GBA353524 90R130-KA-1-NN-80-R-3-F1-F-00-GBA-35-35-24 90R130KA1NN80R3F1F00GBA353524 90-R-130-KA-1-NN-80-R-3-C8-H-03-GBA-42-42-20 90R130KA1NN80R3C8H03GBA424220 90R130-KA-1-NN-80-R-3-C8-H-03-GBA-42-42-20 90R130KA1NN80R3C8H03GBA424220 90-R-130-KA-1-NN-80-R-3-C8-H-03-GBA-35-35-20 90R130KA1NN80R3C8H03GBA353520 6. Install new elements: If your hydraulic system has replaceable elements, now is a good time to replace them. Install a new, clean filter element according to the manufacturer's instructions. Proper filtration is essential to maintain hydraulic fluid cleanliness and prevent contamination. 7. Refill with new hydraulic fluid: Refer to the manufacturer's specifications or hydraulic system documentation to determine the type and grade of hydraulic fluid suitable for your pump. Carefully refill the system with the recommended fluid, taking care to avoid overfilling. Note any specified fluid temperature range or viscosity requirements. 8. Bleed the system: After refilling the hydraulic fluid, bleed the system to remove any trapped air. Follow the proper deflation procedure for your particular system, which may involve opening specific valves or using a deflation tool. This step ensures optimal performance and prevents issues such as cavitation or cavitation. 9. Test and inspection: start the hydraulic pump and carefully monitor its operation. Check for any leaks, unusual noises, or unusual behavior. Let the pump run for a few minutes to ensure proper circulation and verify that the system is functioning properly. 10. Disposal of used fluid: Properly dispose of drained hydraulic fluid according to local regulations and guidelines. Consult local waste management authority or recycling center for proper disposal methods. 11. Check fluid level and adjust: After initial operation, check the fluid level in the reservoir. Make sure it is at the recommended level specified by the manufacturer. Adjust the fluid level by adding or removing hydraulic fluid if necessary. 12. Check for leaks: Monitor the hydraulic system closely for any signs of leaks. Check all connections, hoses and fittings for potential leaks. If you notice any leaks, fix them promptly by tightening connections or replacing faulty components. Leaks can result in fluid loss and impaired system performance. 13. System Testing and Validation: Conduct a thorough testing and validation process to ensure hydraulic pumps and systems are functioning properly. Test the system under different operating conditions, such as different loads or pressures, to ensure stability and performance. Verify that all components, including valves, cylinders and actuators, are operating as expected. 90R130-KA-1-NN-80-R-3-C8-H-03-GBA-35-35-20 90R130KA1NN80R3C8H03GBA353520 90-R-130-KA-1-NN-80-R-3-C8-H-03-GBA-14-14-20 90R130KA1NN80R3C8H03GBA141420 90R130-KA-1-NN-80-R-3-C8-H-03-GBA-14-14-20 90R130KA1NN80R3C8H03GBA141420 90-R-130-KA-1-NN-80-P-3-F1-H-03-GBA-42-42-24 90R130KA1NN80P3F1H03GBA424224 90-R-130-KA-1-NN-80-P-3-F1-F-03-GBA-20-20-24 90R130KA1NN80P3F1F03GBA202024 90-R-130-KA-1-NN-80-L-4-F1-H-04-GBA-35-14-20-F054 90R130KA1NN80L4F1H04GBA351420F054 90-R-130-KA-1-NN-80-L-4-F1-H-04-GBA-35-14-20 90R130KA1NN80L4F1H04GBA351420 90R130-KA-1-NN-80-L-4-F1-H-04-GBA-35-14-20 90R130KA1NN80L4F1H04GBA351420 90-R-130-KA-1-NN-80-L-4-F1-H-03-GBA-26-26-24 90R130KA1NN80L4F1H03GBA262624 90R130-KA-1-NN-80-L-4-F1-H-03-GBA-26-26-24 90R130KA1NN80L4F1H03GBA262624 14. Maintenance plan: Make a regular maintenance plan for hydraulic pumps and systems. This may include regular fluid analysis, filter changes and other routine maintenance tasks. Follow the manufacturer's recommended maintenance intervals and guidelines to ensure the longevity and optimum performance of your hydraulic pump. 15. Documentation: Maintain accurate records of hydraulic pump maintenance activities, including fluid change dates, any repairs performed, and maintenance tasks completed. Document the type and grade of hydraulic fluid used, and any relevant test results or observations. This document will assist in future maintenance and troubleshooting efforts. 16. Continuous monitoring: Continuously monitor the hydraulic system for any changes or abnormalities. Note the condition of the hydraulic fluid, the performance of the system, and any signs of wear or degradation. Detecting problems early can prevent catastrophic failures and extend the life of your hydraulic pumps. Keep in mind that the exact procedure for changing the working fluid in a hydraulic pump may vary depending on the design of the pump and the specification of the hydraulic system. Always refer to the manufacturer's instructions or consult a professional technician experienced in hydraulic systems for exact guidance and specific procedures for your pump model.