First step was to tear it all apart and clean it, followed by documenting all the parts with 3D models in Solidworks. Which I don't have any pictures of at this time.
This is the solid model of my final design.
The final design has the following features
-Pacific Scientific NEMA 34 stepper motor (because it was free)
-2:1 belt drive with a 15mm wide 5mm pitch HTD belt (because one pulley was free)
-A new backlash adjuster cylinder with reamed to size bronze bushings and a pilot added to mount the motor to
-A folded back motor mounting position to prevent the motor from hitting my mill enclosure
-Built in homing sensor
-Spindle/Table axial pre-load spring to reduce moment error durring unlocked motion
-Spindle bearing to reduce moment error during unlocked motion
I will cover each of the above items in more detail as the build progresses.
-Dan