Section R. 408.10143 - Maintenance for flangesRule 143.
(1) A flange with a worn, warped, sprung or damaged bearing surface shall be repaired or replaced.(2) When resurfacing a straight relieved flange, a recess of not less than 1/16 inch shall be maintained on the side next to the wheel for a distance prescribed in table 11 of R 408.10199.(3) When resurfacing a straight flange of the adaptor or sleeve type, the undercut shown in figures 14 and 15 of R 408.10198 shall be maintained to insure that there will be no bearing on the sides of the abrasive wheel within 1/8 inch of the arbor hole.Mich. Admin. Code R. 408.10143