Existing and current regulatory documentation "Norms" for the technical operation of road construction machines regulating the frequency and complexity of service maintenance (SO) is established by firms and companies of machine manufacturers. This study is devoted to the development and justification of the frequency of maintenance of the bulldozer. Set the frequency of SS (SO-1, SS-2, SS-3, SS-4 and SS-5) by operational indicators: such as fuel consumption, machine output, machine operating time, etc. This makes it possible, in the absence of a frequency indicator value, to use and accept these above listed indicators as characterizing the frequency of service maintenance in different dimensions.

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