You need hydraulic open end wrenches like those sold by Martin Sprocket and Gear. Track Loader parts has parts break downs and service manuals for free. Just register and they will e mail for you to down load. On my RC85 with a blown hose we put oil in it. raised the cab, drained the oil tank, swung the drive motor out, dropped the center pan, pulled the hose, capped and plugged the hose ends and fittings, made a new hose with new protective sleeve and put it on. Reverse the process and off you go. Took two of us about 6 hours just taking our time.