There are three type of tech who service vehicles such as the Leo 2:
Vehicle techs - powerplant, tracks etc.
Weapons techs - cannons, coaxial machine guns, smoke dischargers
Electro-optical technicians - fire control systems
There are not specific "Leo 2" techs; rather, techs in each of those groups may be trained to service the Leo 2s, but will also maintain other vehicles, tracked or wheeled, or other weapons systems.
