I bought the Porter Cable (PCB660DP) drill press a few weeks ago after reading many glowing reviews by fellow owners all over the net. I too was very pleased with it after tweaking out some of the minor vibration. Then a few days ago I was making parts for shop cabinets and the arbor fell out.
I know this can happen from time to time, so I thought nothing of it. I cleaned the arbor and tapped it back in. About 15 minutes later of continual use it fell out again. This time I made sure the arbor and spline were spotless (I wiped them down with acetone) and reinstalled. After about the same amount of time of use it fell out again.
At this point I'm at a loss of what to do. I must have cleaned and reinstalled that arbor 10 times now, but it keeps falling out. I also noticed some runout starting to appear and I'm becoming concerned that it's beyond repair.
Anyone have some suggestions on how to fix this?