Numatic Henry Hoover

Question

Hi,

I have a Numatic Henry which is only a few weeks old and I have smashed one of the front plastic wheels off already!

I have a replacement but it comes as a completed wheel including the metal attaching pin. Only the plastic part of the wheel on my vacuum is broken, the pin is still attached to the unit. How do I take out the old pin safely so I can insert the new one?

Thanks,

Stuart