No! What you removed is not the graphite packing, which is now still in place. It is only a piece of metal which is pressed on the packing by screwing in the nut. The packing actually is hardened and prevents the excenter shaft from being pulled out. As Nicola said, remove the Aluminium seal for the vaporizer, the needle rod, the handwheel and then try to pull out the excenter shaft gently. A little heat applied to the threaded piece will probably help. Behind the packing there is still a small metal disc which serves as a stopper for the packing. All is accessible from the excenter shaft side.