Ensuring the operational reliability of the tractor fleet

One of the major problems facing the engineering and technical service of agricultural enterprises is to figure out the volume of repair and maintenance impacts to ensure the optimal operation of the tractor fleet in conditions of limited financial resources. The study introduces individual reliability indicators of tractors, based on the analysis of the machine and tractor fleet in the Vologda region. The condition for the formation of rational and effective repair and maintenance impacts is the constant monitoring of reliability indicators of tractors and agricultural machinery, which allows not only identifying their individual characteristics, but also predicting changes in technical state. Studies have shown that different systems of tractors, in particular MTZ tractors, can differ by reliability actually n several times. The interrelation between the invested funds for repairs and the subsequent failure-free operation was found out. The increase of failure-free operation allows reducing the probability and the amount of downtimes in the busy farming season, thereby reducing the possible costs associated with losses due to downtime of machines, such as: violation of agro-technical terms, which is especially important for sowing and harvesting, being one of the factors of yield reduction. These studies laid the foundation for the method for determining the rational volume of repair and maintenance impacts, which consists in minimizing the total costs aimed at improving the failure-free operation of tractors. All this, along with using the up-to-date diagnostics tools, will increase the efficiency of preventive repair and maintenance impacts.