I�ve always had good success with a hand impact wrench and penetration oil.  No need to remove the knuckles.

On May 29, 2014, at 12:00 AM, Automatic digest processor <LISTSERV@GERRY.VANAGON.COM> wrote:

> Dear All:
> 
> While replacing my falling-apart-rusty disc brake dust shields, I've run
> into the universe's rustiest fasteners (the machine screws holding said
> dust shields on).  I'd like to get the steering knuckles off the bus and
> onto a bench to work on those nasty machine screws.
> 
> The upper and lower ball joints, as well as the tie rod ends, are in
> good shape, and I don't want to do anything to necessitate replacing
> those.  What's the best way of removing the steering knuckles without
> doing violence to anything?

Cheers,    

Frank Condelli
Almonte, Ontario, Canada
'87 VW Westy, '00 Kawasaki 250 Sherpa, "98 Ducati 750 Monster & Lionel Trains (Collection for sale)
Frank Condelli & Associates - Vanagon/Vanagon Westfalia Service in the Ottawa Valley
BusFusion a VW Camper camping event, Almonte, ON, June 05 ~ 08, 2014