The hub needs to come off to get the seal plate removed (its between the
hub and the axle bearing). Taking the shafts to a machine shop is risky
because they will likely mushroom the end of the axle threads and the
threads will need repair (depending on how bad it mushroomed, I have
seen much of this happen). The hub puller adds impact & shock to the
joint which I think helps jar the hub loose. I also doubt that your shop
will have a powerful enough press to apply the force it takes to remove
them. This is our puller that the south-western Ohio SAOCA chapter use
on all our cars.
If you will be at the Invasion with your car, I'll bring the tools (you
bring the seal) and I'll swap out the seal at the hotel parking lot.
We'll have a "Tech Session" on pulling the axle hubs :-)
Jan Servaites (Dayton OH - The Birthplace of Aviation)
Check out the new British Cars Forum: