My actual thought before I contacted this website were brushes. As I look at the schematic you sent it is indeed my machine, however, there are no external brush access ports. The outside of the motor has no openings at all. It appears to open the motor can I must remove the thru bolts that hold the...

What is the procedure for disassembly to check the brushes?

My micromill spindle motor cuts in and out. Sometimes the motor will not start at all. Spinning the spindle usually gets the motor turning, but it acts like an old car engine that needs a serious tune up.