The shaft of my oil pump is not really straight with 0.15 mm offset at the taper fit. This in turn contributes to the axial up and down gear wobbling of about 0.5mm. I now wonder if the small pump gear is shrinked onto the axle and if I can detach it so that a new axle can be manufactured. I know, this is a pretty wild question but perhaps some colleagues do have an idea or even a spare.