This is my routine:
Using compressed air clean the tops of the linear block of all chips and dirt. Shown is the grub screw to remove for adding oil.
I do one side at a time by removing the 4 bolts holding the linear bearing to the mounting plate.
I slide it up just far enough to reinstall one of the lower bolts so the bearing rests on top of the mounting plate. That gives you access to the lower bearing grub screw. Using a 2.5MM ball end hex wrench remove and fill with oil, reinstall the screw. Be sure the top of the bearing is clean before removing the grub screw.
Fill the upper bearing, slide it back down and reinstall the 4 mounting screws. Do the same for the other side.
