FREMGANGSMÅDE TIL IN-SITU OVERFLADEFORNYELSE AF EN VINDMØLLE-HOVEDROTORAKSEL

A method is provided for in-situ resurfacing of a main rotor shaft 24 of a wind turbine 10, wherein in an operational state, the main rotor shaft 24 is coupled at a first end to a rotor hub 20 and at the opposite second end to a gearbox 26 or directly to a generator within a nacelle 16. The method includes uncoupling the rotor shaft 24 from the gearbox 16 or generator so as to expose an end face 40 of the second end of the rotor shaft 24. A fixture 42 is attached to the exposed end face 40 concentric with the rotational axis of the rotor shaft 24. A lathe system 50 in then attached to the fixture 42. The rotor shaft surface adjacent to the exposed end 40 is machined with the lathe system 50 such that the resurfaced portion of the rotor shaft 24 surface is brought to a round state concentric with the rotational axis of the rotor shaft 24. The method is conducted within the nacelle 16 with the first end of the rotor shaft 24 remaining coupled to the rotor 18.