FIELD: road and building construction equipment, may be used in repairing and emergency works. SUBSTANCE: hydraulic system allows main and auxiliary working units of machines to be used. Coordination system mounted in delivery main pipeline allows main and auxiliary working units to be alternatively connected to pump by means of on-off hydraulic valve. Flow rate regulator and safety valve are adjusted for optimum mode of operation of auxiliary working unit. Such construction allows working parameters of main hydraulic system to be coordinated with that of auxiliary working units. EFFECT: wider operational capabilities and enhanced reliability in operation. 4 cl, 1 dwg
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