Nearly every company faces the challenge of significantly increasing productivity. In the age of Industry 4.0, the necessary increase in investments for increasingly interconnected manufacturing technologies and systems can only be justified if high equipment availability can be ensured. This book shares practical experiences gathered over several decades and describes fundamental methods, techniques, and tasks of maintenance personnel. Among other aspects, the following topics are explored in depth: - Division of tasks between production planning, maintenance, and production - Integration of maintenance into the company based on its organizational structure - Planning and control, the importance of production planning for maintenance - Integrated maintenance, inspection, servicing, and upkeep.