When operating your pumping systems with hydraulics it is very important to keep an eye on your filters and fluids. Each week you need to check the oil level which could indicate possible leakage. Both the filter and the fluid need to be changed at least every 6 months, or as noted in your manufacturer's operation book, in order to keep your system running smoothly. Check out our online parts catalog for replacment hydraulics to meet your needs. Call us at 800-859-8265 before 3:00 pm and we can ship your order that day.