On all profile joints on the crane girder:

    Inspect the M12 cup square bolts. They must be tightened with the correct torque.

    If the cup square bolts are not properly tightened: tighten them to the correct torque.

On all profile joints on the crane girder:

    Check the spacing of the profile rail sections. The profile sections may be spaced maximally 2 mm apart.

    If the distance is greater: release the clamping plates and move the profile sections closer together.