One problem related to frame and members has been reported for the 1998 International 4700. The most recently reported issues are listed below.
We purchased 3 like units from this manufactuer in 1998, and have 7 more in our fleet ranging from year 1993-1997. The vast majority have developed other structural weld fractures, and have been returned several times to the manufacturer for repair, only to break again within weeks of return. The paramedics in this particular unit noticed the module floor was moving independent of the walls while moving. We have had this unit repaired, but do have numerous pictures and some video available. We would also entertain using another like vehicle of ours for structural integrity testing if you're interested.