Originally Posted by
protman16
balibalistic,
There should be a large hex nut on top of the spindle step pulley, and a smaller hex nut above that. Use a large adjustable on the larger hex nut to hold the spindle steady, and a smaller adjustable or proper sized wrench to loosen the small hex nut above. Only loosen a few turn.
Next wrap the draw bar (small hex nut) with a soft faced hammer or chunk of aluminum. Then hold the chuck with your hand while the other hand completely loosens the draw bar.
If you do not have a large wrench to hold the spindle steady, you can change the belts to the lowest possible ratio to keep the spindle still while you loosen the draw bar.