The aim of this study was to determine the facts about the service and maintenance organization of unnamed company. After a thorough review of references and recommendations in the first part of the study, a sufficient volume of information was obtained in order to get a more accurate assumptions about the organization and quality of maintenance as well as to be able to provide a meaningful and reasonable guidelines to improve maintenance, and therefore the entire business of that given organization. Agricultural engineering is more sophisticated and complex as it allows greater working capacity and efficiency, but for this reason the machines are much more expensive and therefore their maintenance is also more expensive and complicated. All of the mentioned above requires the maintenance to follow technological advances of farming techniques, improve methods of repair, diagnostics and maintenance, quality and efficiency in conducting its activities and provide the highest possible availability of machines with minimum maintenance costs. The research was conducted by a questionnaire table being created. After answering the question from the audit the quality of the existing situation in the organization was assessed by comparing each response with the reference recommendations. The obvious disadvantage of organization in which the audit was conducted is the fact that, according to the surveyed manager, there are no plans of annual budget maintenance, analysis of the effectiveness of management of spare parts is questionable and standard parts procurement process takes longer than the recommended time limit. It would also be desirable to provide better training of tractor drivers and their ability of earlier detection of potential problems, ie. breakdown and better field maintenance service by mobile service team.