Mechanical equipment is an important part of enterprise fixed assets.The technical index and working performance of mechanical equipment play a decisive role in product productivity, quality, cost, safety and environmental protection. Wear, deformation, fracture, corrosion and other phenomena inevitably exist in the process of mechanical equipment running or stopping. The equipment mustbe repaired and maintained in time to make it work in the best working condition for a long time. Therefore, maintenance is a necessary means to maintain production and it is an important measure and way to save energy and resources.The university and college students majoring in mechanical engineering have mastered the solid professional knowledge of mechanical equipment design and manufacturing. Before going to work, you should have a basic understanding of the problems and solutions that may be encountered in the specific use of mechanical equipment. These problems involve relevant knowledge and skills of the maintenance and repair, lubricating, fault diagnosis, fault form, fault parts disassembly, inspection, cleaning, repair and installation of mechanical equipment.This book consists of five chapters. Chapter 1 mainly introduces the basic maintenance knowledge of machine, Chapter 2 briefly introduces the lubricating of machine, Chapter 3 mainly introduces the disassembly and assembly of mechanical equipment, Chapter 4 mainly introduces the repair technology of mechanical equipment, Chapter 5 briefly introduces the installation knowledge of mechanical equipment.