Manual Steering Gear Adjustment

Hi Guys,
Anyone out there have information on how to properly adjust a manual steering gear? My Plymouth Shop Manual has a short description on how to make the adjustment, basically two adjustments, but even after reading it 7 or 8 times I still don't understand the procedure for adjusting a manual steering gear on a 1969 Barracuda. I know there are replacements out there, but I would rather use the original if possible.
If anyone can, would you mind giving me a bit more understandable procedure?

Thanks,