According to Noria.com, another good way to drain equipment's hydraulic system is to pull any return-line filters. These filters can hold a significant amount of oil.
Different mobile equipment manufacturers will have their own procedures for the oil change process. While they may vary from model to model, the same basic elements will exist. Remove the drain plug, replace the filters and refill with new oil. Gravity will do the majority of the work in draining the oil, but there are other options to help expedite the process.
Read the entire article, "Best Methods for Draining Oil from Hydraulic Equipment," on Noria.com...
