Machine repair experience

Symptoms of program memory needing to be formated which occured on Mitsubishi M64 control. This happened on Mori seiki GV-503 CNC machine with a meldas 64. Customer said a DOS screen appeared on Bootup once or twice with “ diagnostic code 005 Enter. As well as analyzing data.

Had a problem the other day with a Zimmerman bridge type CNC machine tool. The machine utilized a grease lubrication system for it's linear guides and ballscrews. The Zimmerman had a lubrication alarm that came on after about 15 seconds after the alarm is cleared.

Had a problem on Mitsubishi machine H-5A. When commanding a tool change the tool was called up and placed above the spindle. However the ATC did not exchange the tools and came up with a YZ not at 2nd reference return alarm. The position in the screen had a #2 next to them so they were in fact at 2nd reference. The machine had a Mitsubishi M3 control on it. On this control someone had changed the Zero return position and 2nd reference position. However there is also a fail safe in the control. to prevent excessive changes and keep the zero return within the factory envelope.

I would like to rebuild the spindle in my VF1 myself. Has anyone done this before?