robert22,
Mechanically, the Dual is extremely robust. I would recommend steaming the bottom to remove the old grease then applying a good automotive synthetic grease to lube the automatic play gears. The motor should be pulled apart (not easy to do) and the bearings should be soaked in a good oil. I used a synthetic oil hear as well. Some actually apply a spot of grease in the bearing before reassembly. The tone arm jewels should be touched with oil and inspected to make sure that their isn't any slop. I have never seen them need re-adjusting. Lastly, the platter bearing and race should be cleaned and again oiled and greased. It is very unlikely that you will need to replace the platter bearing as it is a set of ball bearings, and again extremely robust. Be sure to occasionally lift the platter off and apply a good 10-weight oil to the platter shaft. This not only lubes the shaft but will drip down into the bearing too. You will notice that the very top and very bottom of the shaft is rough. It is supposed to be. This retains oil and distributes it during rotation to the smooth part of the shaft. You will be hard pressed to find a turntable that sounds as good and as built as well. Only the Thorens TD 124 comes to mind for the type of quality that is in the Dual 1229.
Take care.
Norman
