We've got a Rockwell 13" woodworking planer, about 30 years old, model 22-650, whose lower rollers need to be rebuilt and we don't know how to dismantle them. This is a link to some pictures on PhotoBucket that show what I'm talking about: http://tinyurl.com/gnfcbbf
The rollers themselves roll on shafts that pass somehow through through-holes in either side of the base casting. What you see from the outside of the castings on either side are adjustment fittings that are slotted for a screwdriver blade with a hole drilled axially and tapped for what seems to be a 5mm metric machine screw with a fine thread, maybe 0.8 pitch. The fittings are eccentric and you adjust the height of the rollers by turning the fittings with a screwdriver and then tightening down a set screw to keep the adjustment. The rollers themselves seem to be rotating on through-shafts that look to be around 9/16" to 5/8" in diameter or so. The manual is silent on the issue, and the exploded drawing shows the slots in the base for the rollers, but there's no exploded view of the roller assemblies.
We need to get them out and find out what kind of bearings the rollers roll on, replace the bearings, and reinstall them. We threaded a machine screw into one end of one of them over a big hex nut and some wide washers, and then carefully tightened it down. The shaft came towards us a little way (shown in one of the pictures) and then came to a stop. Possibly a slide hammer would do the job, possibly a pin punch and a lump hammer would drive them out, but we're not going to start banging on this thing until we have some confidence that we're doing the right thing. Ideally we'd like to hear from someone who's done this disassembly and can tell us how to proceed, or who has done the job on a similarly-designed tool.
I'm posting this on both the old woodworking machines web site and the woodworking/metalworking internet newsgroups.
Thanks for any help you can offer, Tom