If the route becomes temporarily inaccessible to refueling trucks, (and in the meantime the excavators run out of fuel) and then the route becomes accessible to the trucks again, for some reason the truck doesn’t deliver fuel to the excavators and instead tries to send the empty excavator to the fuel station. I tried assigning the mining station to the refueling station, but it doesn’t work either. I can’t find a solution for this.
(Edit: Its also happens with trucks randomly, around the map)
