Usage:
The shaft nut needs to be removed by drilling it off the spindle and pulling it apart in two halves from the spindle threads. To accomplish this you would do the following:
a. Prepare the drive on a large drill press with shaft nut facing up and the tapered roller bearings facing down.
b. Start drilling one side of the shaft nut close to one of the dowel pins with an approx. 1/2" drill bit. Clean away metal scrap from drilling as you drill to ensure no material gets lost within the drive. Drill down to, but do not hit the tapered roller bearing surface.
c. Drill another hole next to the one you just completed and keep working your way outward until that side is drilled out.
d. Go 180 degrees around the shaft nut and start the process over again near the other dowel pin.
e. Once you complete your drilling use a chisel to open up each side where you completed your drilling.
f. Separate the shaft nut and pull it away from the threads, this may be difficult due to the loctite on the threads.
g. Clean area from all materials and wire brush the threads clean on the spindle.