Adjusting manual steering box.

With manual steering, you should just need a slotted screwdriver and a box wrench. Loosen the large nut a bit w/ the box wrench first and while holding the nut steady, loosen the top adjusting screw 1/2 turn. Tighten the nut back down while holding the set screw. Road test and adjust again as necessary 1/2 turn or so at a time.

Interested in this topic as well. My manual box has the adjusting screw all the way down, to the point where is level with the nut.

This means the box is in the point where it is adjusted at its loosest point?

I did notice the steering came loose a while ago. Suspension components are good, already checked.