>How do I remove the hubcapon the driverside (the one protecting the
>hub nut on the steering knukle /spindle)
>

It just pulls off.  You can try prying with a screwdriver, on one side, then the other, until it comes off. Mine sometimes falls off, gets lodged in the wheel cover and causes massive vibration.

>there is a small square stub
>protruding from the middle of the hubcab.

That's the drive for the speedometer.  Make sure it's still protruding when you put it back together.

Bill