Machine maintenance is an umbrella term that covers a diverse selection of subspecialties. Millwrights, for example, work primarily on the installation and assembly of industrial machinery. In any machinery mechanic career, you focus on repairs and maintenance. Other responsibilities may include diagnostics and adherence to both routine and long-term maintenance schedules. You typically specialize in a particular type of product, working under a title like medical equipment service rep or wind turbine technician. Your duties may center on operations or strictly repairs. A machine maintenance position requires high-intensity labor, so physical stamina is crucial.