lever 8 is distributed to both actuating tappets 2 3 through the intermediary of an interposed tilting element 10 the spring arrangement 30 is shaped in the form of a tension spring with a specific internal preload the spring arrangement 30 is by way of a length adjustable connecting arrangement 33 mounted for articulated movement at the transmission lever 8 and is equipped with a bent eyelet 36 allowing for articulation at an associated vehicle part the connecting arrangement 33 is provided with a ball shaped abutting surface 35 associated with a partially ball shaped indentation 34 at the transmission lever 8 as well as a clamping element for a bar shaped extension of the spring arrangement 30 a bolt 11 is threadedly attached to the transmission lever 8 and is secured in its position by means of a lock nut 12 the bolt 11 includes a partially ball shaped end portion 13 engaging into a calotte shell shaped indentation 14 of the tilting element 10 the tilting element 10 has a rotationally symmetrical design and is provided on one end face with the centrally arranged calotte shell shaped indentation 14 adjacent to the calotte shell shaped indentation 14 is a cone shaped transition portion 15 which is enlarged towards the end face which allows for the swivelling movement the radius of the calotte shell shaped indentation 14 corresponds substantially to the radius of the partially ball shaped end portion 13 of the bolt 11 a substantially partially ball shaped projection 16 is associated with the.