I'd advise not hammering the studs out nor pulling them in. Use a press. 

You have to take off the hub, and that means removing the big castellated nut.

Alistair

> On Feb 15, 2015, at 7:22 PM, Dug Smith <dug@DUGBERT.COM> wrote:
> 
> So I'm thinking about installing the GoWesty studs so I can put some
> spacers on the rear wheels (now I've got the Terrawagen flares on :o)).
> Has anybody done this - what's involved?  I'm hoping it's just a
> matter of taking the drums off and hammering the old ones out and
> pulling the new ones in, but with my luck recently, the engine'll have
> to come out or something...
> 
> toodle pip,
> --
>      Dug Smith          | Terry Pratchett: It's almost
> (mailto:dug@dugbert.com) |  impossible to ride a rock and roll
> (http://www.dugbert.com) |  motorbike and stay on for three verses.