As I see it from what is left of the old sensor the bolt that holds the sensor goes through the hollow tube on the sensor actually threads in the spindle flange and the hollow tube goes into the steering knuckle. I am this far into this so I going to take the spindle off to check the bearing and change the seal. Then I can drive out the old hollow tube from the old sensor if it actually seats on the back of the spindle flange as the old tube is rusted in place. The 12 point cap screw actually holds the shield inplace. The screws are there but shields are long gone. Am I correct in my assumptions?