1998 HL-2 sat broke down for a few months with axis control problem. Tailstock was working ok. Now, new MOCON board and axes work ok but tailstock problem.
When you try to home tailstock, it goes back away from the chuck then immediately reverses back toward the chuck and stops at the travel limit. Control says "running" until reset.
The comb is clean and straight and have put TWO new encoders on it. (tailstock read heads) Now Haas service says new hydraulic solenoid valve is needed. I am skeptical.
I think it's something having to do with the new MOCON board.