If problems occur with the cooling system, it can be a sign that the whole system
needs to be thoroughly cleaned.
1. Stop the engine.
2. Open the cap of the expansion tank.
CAUTION: Open the expansion tank cap carefully. When running
the tractor the expansion tank has an overpressure of 1.0 bar.
3. Connect a hose from the radiator draining cock to a clean container and open
the plug.