Self-propelled earth working machine having a coolant discharge tank

A self-propelled earth working machine, comprising:

• a machine frame;
• a traveling gear supporting the machine frame;
• a power source supported from the machine frame and configured to supply the earth working machine with power;
• a working unit including a housing enclosure for providing an earth working zone;
• a cutting drum rotatable about a working axis and accommodated in the working unit and configured for earth working operation;
• a liquid coolant supply configured to conduct liquid coolant into the working unit;
• a discharge tank configured to hold liquid coolant and supported from the machine frame;
• and
• a discharge line system connecting the working unit to the discharge tank and configured to conduct liquid coolant from the working unit into the discharge tank;
• wherein the machine frame includes a conveyor belt holding fixture configured to releasably accommodate a conveyor belt for transporting removed earth material away from the working unit;
• and
• wherein the discharge tank is releasably mounted on the conveyor belt holding fixture in exchange for the conveyor belt.