Roadworthy rail ballast regulator

A regulator wing blade and wear plate assembly, comprising:

• a moldboard having at least one pin extending transversely to the moldboard, said pin including a central portion fixed to a corresponding opening in said moldboard, and having a notch with a surface inclined from an outer end of said pin toward said moldboard;
• at least one grader blade having at least one mounting opening having a flared, inclined surface complementary to said notch so that said blade is hangable on said pin and so that said notch draws said blade against said moldboard;
• a pair of said grader blades each mounted to corresponding surfaces of said moldboard, lower edges of said wear plates defining a gap and a filler bar disposed in said gap and sandwiched between said blades;
• and
• each said grader blade has at least one recess formed in an inner surface, and said filler bar is provided with a corresponding number of extending lugs constructed and arranged for engaging said recesses so that said filler bar is secured between said blades upon assembly to said moldboard.