when do i need roller replacement?

Question

What is a good indicator that I need to replace the rollers on a series 400 fw patio door? installed approx 2008. door seems to slide OK, not great but really don't remember what great is, but seems worse the colder it gets. Thanks

Paul · Accepted Answer

When the bearings wear out, you will feel the door slide like it is going over dents and valleys, and you may even hear a scraping sound. Examine the track for metal filings. Don't wait too long, or you will not only need to change rollers, but also the track.