Remove all loose debris from the gravel drive including branches, large rocks bigger than a baseball, and any other obstructions, including lawn tools, rakes and miscellaneous parts.
Move your tractor and box grader to the end of the driveway, parking the tractor so it is facing down the length of the driveway with the box grader over the very end of the drive.
Lower the box grader so it makes contact with the gravel driveway by depressing the hydraulic switch to lower the unit.
Place the tractor in its lowest gear and drive it forward very slowly, allowing the box grader time to dig up and sift the gravel drive surface. Work one section of the driveway at a time, going up and down the drive as needed. Run over difficult sections twice if necessary to properly smooth out the drive. The box grader will turn the soil and gravel up, sifting it and replacing it to create an entirely new surface.
Complete the final pass on the driveway and park the tractor away from the drive. Rake out any remaining seams or lumps in the driveway with a metal gravel rake to create a perfectly smooth surface.