Current production of C546 is utilize an assembly that consists of the eddy current disk, input pulley assembly and pillow block bearings. The pillow block bearings are permanently attached to the input pulley shaft and can not be removed. If you encounter a situation where the eddy current disk is damaged and required replacement, the entire assembly consisting of eddy current disk, input pulley and pillow block bearings must be replaced, See procedure 7.17 for replacement instructions.