The method of calculation and selection of methods of tractor maintenance, taking into account the working conditions of the operator

The method involves calculation and selection of methods of tractor maintenance, taking into account the working conditions of the operator in the field. It is intended for agricultural enterprises with an average annual number of tractors not exceeding 20 units. Calculation for the choice of maintenance methods is carried out on a personal computer in Microsoft Office Excel or a calculator for the minimum value of the unit cost of tractor maintenance. Research objective is to determine the most rational method of maintenance by the specific cost of tractor maintenance. The method allows determining the unit cost of maintenance, either taking into account the additional costs of tractor maintenance when servicing tractors in the field conditions, or without taking them into account. The article presents the selection procedure for maintenance methods, taking into account the working conditions. The annual economic effect from the application of this method, calculated on the example of agricultural enterprises of the Irkutsk region, is 27.8 thousand rubles per tractor. The method was tested as exemplified by farms in the Tulunsky and Cheremkhovsky districts of the Irkutsk region and can be useful to engineers maintaining farming tractors. The results of the study can be used in agricultural enterprises, both the Irkutsk region and the Siberian region as a whole.