The present invention is directed to providing a device for changing the timing of intake and exhaust valves in {HEAD ~ an internal combustion engine} in which the high production costs for an axial bearing on the camshaft as well as the overall axial length of {TAIL ~ the camshaft} necessary for this axial bearing and for the impulse sending wheel attached to the device can be reduced to a minimum 
The present invention is directed to providing a device for changing the timing of intake and exhaust valves in { HEAD ~ an internal combustion engine } in which the high production costs for an axial bearing on the camshaft as well as the overall axial length of { TAIL ~ the camshaft } necessary for this axial bearing and for the impulse sending wheel attached to the device can be reduced to a minimum
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