Section R. 408.14934 - Removal from serviceRule 4934. A wire rope sling shall be removed from service if any of the following conditions are present:
(a) Ten randomly distributed broken wires in 1 rope lay, or 5 broken wires in 1 strand in 1 rope lay.(b) Wear or scraping of 1/3 the original diameter of outside individual wires.(c) Kinking, crushing, bird caging, or any other damage resulting in distortion of the wire rope structure.(d) Evidence of heat damage.(e) End attachments that are cracked, deformed, or worn.(f) Hooks that have been opened more than 15% of the normal throat opening measured at the narrowest point, or twisted more than 10 degrees from the plane of the unbent hook.(g) Corrosion of the rope or end attachments.Mich. Admin. Code R. 408.14934