I recently changed the hydraulic fluid and filter in my International 574 tractor with an International 2050 front loader and now the rear lift, steering and PTO will not work. Everything worked fine before the fluid change, but was starting to get whining noise with the hydraulics.'the fluid was very milky from water/moisture. The front loader operates as it should. I used a Wix filter and Mastertran fluid (New Holland replacement for HyTran). Do I have air somewhere in the system? Anyone know how to bleed the system? I have drained the fluid and "flushed" the case with diesel, re-filled with fluid and installed a new filter, but no change.