Tool used for removing and fitting a transmission gear box

A tool for removing and fitting a transmission gear box with, comprising

• a holding device for holding a transmission gear box in position with;
• the holding device having a fitting shank projecting out from a first end portion thereof;
• a support member supporting the holding device thereon;
• the support member including an upright support rod, a horizontal support rod secured to a lower end of the upright support rod, and a pair of supporting legs pivoted to the horizontal support rod;
• the upright support rod having a central shaft fitted to an upper end thereof;
• and
• a connecting sleeve connecting the holding device to the support member;
• the connecting sleeve being fitted around, and secured to the central shaft of the upright support rod at a first end thereof, and fitted around, and secured to the fitting shank of the holding device at a second end thereof, thus securing the holding device to the central shaft,
• wherein the holding device has an axial holding hole, and a radial screw hole communicating with the axial holding hole on the first end portion thereof, and a center, which has a flat side, being held in the axial holding hole;
• said center being secured in position by a securing element screwed into the radial screw hole, and pressed against the flat side.