Bobcat 435 mini tracks wont turn

[CrystalWaterscapes]

I have a bobcat 435 mini exc fast track. I was working on it when I heard a snap or crack noise and the tracks quite turning. All the other hydraulics are still working. When I try to move forward or backward I get absolutely no response. I don’t see any hydraulic leaks. My machine is stuck on a job site, I need to finish and get it out of there ASAP. Any ideas on what the possible problem and fix my be.
Thank you for your help
Robert

[northmichigan]

Did you check the linkage from the steering assembly to the pumps?