System for preventing damaging of a gear box of a vehicle provided with a clutch-servo and a servo-shift actuated gear box system

The present invention provides for a method and apparatus for preventing damaging of a gear box of a vehicle provided with a servo-actuated clutch system and a servo-actuated gear shift system, the servo-actuated clutch comprising a clutch-servo (CSM) housing a pneumatic piston (PP), movable between a first and a second positions corresponding to an open and a closed system of the clutch. The functioning of servo-actuated gear shift system is enabled when the pneumatic piston (PP) position exceeds, toward said disengagement state, a third predefined position.