To provide a snow truck maintenance machine including a pump driven by a power source, a hydraulic motor connected to the pump at the supply side and the return side, and an actuator supported against an assembly frame and used for rotating a mill and drive wheels, with the machine having the mill rotatably mounted thereto.
The power source comprises a motor 2 for driving the drive wheels 5 and 6. The pump 9 and the actuator 16 are affected by a control unit 17 which is connected to a motor sensor for the rpm nD of the motor, sensors for the rpm na1 and na2 of the drive wheels, a sensor for the hydraulic motor of the mill, and a sensor for an actuator path. The control unit 17 causes values detected by the sensors to be related to one another by use of algorithm, and controls the pump 9 and the actuator based on this.