The time for maintenance operations is often restricted due to external circumstances. When conducted with inexperienced operators, additional uncertainties can arise and in case of a delay, high follow-up costs emerge. By using Virtual Reality (VR), operators may practice their skills in advance. This paper analyzes the training content and describes which parts of a generic operating cycle have the potential to be supported by VR as training technology. Furthermore, a training procedure and a resulting system architecture that allows to work efficiently with VR as a training technology are presented.