The swivel function on my 310D backhoe seat makes terrible scraping noises. It’s a Grammer DS85H seat. looking at the parts breakdown it looks like it has bushings and bearings that could be replaced if I could separate the swivel section from the rest of the seat. There are 4 socket head cap screws with nuts that look like they secure the two halves together but they must be tach welded or something from the factory because they don’t budge at all. Has anyone worked on these or have some advice?
i ve . but my tech english is bad / Nothing too complicated/. There are metalic balls not bearing / watch out not to loose .