I posted this early this year:
1. Remove the DRO if present and everything from table top.
2. Loosen table gib.
3. Remove the crank and bearing from the right side
If there is a power feed remove the assembly.
4. Remove the lead screw from the left side.
5. Set up a set of sawhorses with a plank wide enough for the dovetail.
A metal die cart works well also.
6. Crank the table up or down to the level of the saw horses.
7. Push table onto saw horses, adjust up or down as needed.
This may require an assistant.
8. Flip table over so ways are on top.
everything is exposed for cleaning.
9. Keep track of any shims behind the gib.
Be sure to clean the drilled hole from the table nut down to the crossfeed nut as this is how the crossfeed gets it's lube. It is best to remove both nuts for this.
I would NOT use a drill press to spin the leadscrew to clean it. A lathe with a center in the free end is much safer.
MSC stocks nuts and many other parts and is much easier to deal with than the outsourced Hardinge parts people.
I use a medium india 6" long triangle stone to stone off gunk and burrs. Keep the stone wet with mineral spirits prevents plugging it up.
Bill