Like all the concepts of Science and technology, the doorway to this field, also with the definition of maintenance and repair begins and this is the direction there are many misconceptions that in this area arises. Unfortunately, these misconceptions in the minds of many managers, and even experts and practitioners in the field of maintenance and repairs there is also. Basically, maintenance and repairs, (refer to the notes), the only sphere of preventive maintenance will not be included, although this field is one of the most important strategies of maintenance and repairs. Maintenance and repairs, lubrication., although lubrication is one of the activities and actions of the preliminary in the field of maintenance and repairs. Maintenance and repairs, a critical and quick to repair the devices. what if a high speed in the implementation of the activities of maintenance and repairs is one of the important indicators in this field. Maintenance and repairs a art. because before the occurrence of a problem, as well as during its occurrence. the ability to choose the approaches and activities of different there. Therefore, managers, supervisors, and experts and officials of the maintenance and repairs of the role of the bold more than the other other parameters, even "the essence of the problem created," he said.