I agree with using a puller, I have pulled many over the years. And I agree with the Chilton repair manual suggestion, I have an older edition 6735 only covers 67 up to 79, but it has what I need. Also the internet can be very helpful through Google search, a lot of times I'll print it out and save it.(with my repair manuals) Below find a diagram of a Grant wheel. I think the N34 wheel has a very similar mount. You should be able to turn the horn button an inch or so one way or the other and it will get to a spot where it will pop right off.