Originally Posted by
billnorman1
Generally to the best of my knowledge the shaft screws into the magnet housing on newer M/K motors. It is composite, i.e. made of graphite. You have to carefully heat the magnet housing with a torch to melt the red loctite that was used to assemble the two parts and then, after removing the shaft, pick out the debris (pieces of Loctite and shaft) left in the magnet housing threads. It is a semi-destructive process, bits of the shaft can/will come off the threads when you wrench it out.
This juncture is critical to the sealing the motor. You do not have to change the shaft but it should be perfect to reinstall or the likelyhood of leakage is high.
Time for Jones to come along. I'd change the shaft if I had to disassemble it.