Ok, So its 1:40 AM and I'm trying to get our main machine back up for the last day of clean-ups. The sharft in the wheel motor broke, so I bought a new wheel motor, took the pump off, cleaned the pump out part by part, DRAINED the hyrdro system, then put it all together. I re-filled the resevoir and started it up on blocks. The side with the new wheel motor doesn't work at all! Absolutely no movement. I am confident that every is put together correctly but what is wrong?>???? Do I need to do something else special when I put the new components in? Please help soon!!!