Abstract: Method and apparatus for removing an aerofoil structure from an arcuate casing section of a rotary machine, the apparatus comprising: a frame which supports or is supported on the casing section; a reaction arm which is rotatably mounted in the frame about an axis parallel to a rotational axis of the arcuate casing section, a free end of the reaction arm being adapted to apply a force to the aerofoil structure; and a torque multiplier acting between the reaction arm and the frame, the torque multiplier being operable to apply the force to the aerofoil structure in a substantially tangential direction of the arcuate casing section.