There is a section in the Shop Manual that covers steering box adjustments. Here is a
link.
You will need a couple of things. A scale capable of reading 2 lbs (I bought a trigger pull scale) and a wrench to loosen/tighten the worm bearing locknut. It’s a special wrench that I was able to fabricate using a flat plate and a couple pins. I included a diagram of how I made it but I would alter it so the socket extension goes between the two pins and cut off the excess. The length of the wrench was too long making it awkward to operate. I found using a few long extensions located the ratchet in a good spot.
