In Reply to: Hydro change posted by AAm on August 14, 2017 at 20:12:33:
Can we assume you have an N-Series Ford Tractor? It helps to always put that info up front when asking questions. Note that the 9N and 2N hydraulics are a bit different than the later 8N and NAA styles. Milky colored hydraulic oil is a definitive sign that it is contaminated with water. Before refilling the system, you might want to inspect the pump for cracks, and try to determine how water got into the system in the first place. Had the tractor been stored outside for a long time uncovered? Was the lift working at all prior to this? Did the lift sustain/hold an implement/load in the UP position for very long? There are most likely other issues with your system so a good root cause problem solving procedure needs to taken. Some tests should have been done prior to draining the system. Here is an article from our HOW-TO's forum on some basic 8N Hydraulic System repairs.