use crane to lift up the separator, an brought up the separator sleeve a little, and pad the copper on the left and right side combination surface of separator sleeve, and beating down with a sledgehammer at the same time, also can be axially use the copper to beat and vibrate the separator to break the oxide membrane, gradually remove the separator, if the above method is difficult to remove, in a corresponding position on the spacer sleeve drilling, tapping, with screws top up and remove the separator.