How/when to check axle bolts, bushings and shackles?

Jerry B wrote:
Can the spring suspension hardware be checked visually, or does one need to disassemble the spring attach hardware?

After I purchased out unit I check all of the suspension nuts - clamps that hold the axle to the spring - most were not torqued to the spec. Checked again this spring and they have not loosened.

I had the wet bolt kit installed and greased again when I service the bearings/brakes in the spring. I just completed a long trip (5100 miles on the trailer) and will grease them again.