Set up, maintain, and repair intricate and sometimes massive machines Assemble and install machines Test machines to make sure they are working properly Some welding Manage the layout and placement of equipment and machinery in factory settings to ensure minimum downtime Identify and repair problematic parts of a machine by running tests, make temporary repairs, and install new parts Dismantling older machines and replacing them with new ones Oversee preventive maintenance by identifying and correcting potential issues, removing worn out pieces and lubricating mechanical parts Use machinery or equipment, such as forklifts, to move mechanical parts