The effective use of tractors and self-propelled agricultural machines largely depends on the repair service. The aggregate repair methods are best suited to the condition of the machine-tractor fleet at the moment and capabilities of repair and service facilities. For its implementation it is necessary to create exchange fund of units and assemblies.
In the paper are systematized the evaluation criteria of suitability and feasibility of including units and assemblies for exchange fund for aggregate method of repair. Certain aggregates and units of C-100MAX tractors were determined to be included in the exchange fund needed to maintain their efficiency.