Please see this link for Lippert's Schwintek Troubleshooting Guide. While the guide doesn't speak to an lubrication, if you haven't seen this document, it's a good one to print out, read through and keep in the coach.
That said, I've never heard of any member here talk about lubricating those tracks.
Consider giving Lippert's Customer Service a call - 866-524-7821. Whatever you learn, please circle back here to advise everyone else.