I know this won’t affect you on this rain but years ago on a late harvest year we had freezing rain followed by snow and then prolonged freezing temps. The grain tank and auger bed augers got water in them and turned to ice. That combine was froze up and a bear to thaw. We put a space heater in the back on seives and used hot water pressure washer in the grain tank to thaw augers as we had no heated place to put it in. I would drive it ten miles if something like that was coming! Otherwise I wouldn’t worry much about it. Just clean grain out around sump in grain tank so it doesn’t stay wet and rot that area out.