Do not quote me on this but I sure think that u need some sort of certification to work on cranes,You are accepting a lot of liability by working on it and not being trained,I have worked in several plants over the years and 2 things that the company never allowed me to work on was any cranes and adjusting the tension on overhead doors,could check fusses or adjust rollers but anything other than that they called the pros. Talk this over with your bosses and call someone out
