adapted via the nozzle 21 to correspond to the load pressure in the lifting cylinders 12 13 if the driver again puts the pilot control actuator 28 into the neutral position the load damping system is automatically deactivated after the load pressure in the hydraulic accumulators 16 19 has been variably adapted to the respective operating state via the nozzle 21 no notable sinking of the bucket 5 or the mounting assembly 6 results as a guard against unacceptable spring deflections of the lifting cylinders 12 13 via the hydraulic accumulators 16 19 the load damping system is automatically deactivated at a predetermined lifting height via the inductive switch 34 on the frame of the wheel loader 1 for specific applications it can be necessary in the operating state of the wheel loader 1 to deactivate the nozzle 21 for example by means of a magnet valve 33 the function of the hydraulic system of the invention is intended to be clarified by way of a practical example during empty runs empty bucket the cylinders 12 13 are under a pressure of for example 30 bar and the hydraulic accumulators 16 19 are under their own prestress of 18 bar because of these pressures the highest driving speeds can be achieved during empty travel wherein vibrations particularly pitching vibrations can be suppressed to the greatest extent during loading of the bucket 5 the valves 15 and 22 are switched to neutral via the manometric switches 29 32 and the valve 33 is switched to passage the hydraulic accumulators.