After the war, larger construction equipment was needed in order to reconstruct and cultivate devastated farmlands. At this point, Japan was developing equipment imitating what the U.S. army had brought in.
This model had many shared components with GD25. Just like GD25, it was produced for maintenance of small roads in cities and villages.
The main differences from GD25 were that this model came with two tandem rear axles, four low pressured rear tires with better leveling and excavating ability and leaning type front wheels that prevent sliding sideways during excavation and which enable the grader to turn tightly.
There were other construction machines built by Komatsu over the years. We can see how the various designs mirrored different eras if we look at them set against the flow of history.