Shawn, the white cap covered the area where the tool would slide over, it's about 1.5 inches long, when you remove the rubber boot you'll see it.
I just took a screw driver and lightly tapped it back (slides back towards the rack). You then see the machined part that the tool would slide over, after replacing the inner tie rod I just slide the cap back over it again.
Once you get the rubber boot off, it will become alot more easier to see what I'm referring to.
I assume you need a back up wrench right? Did you need to measure anything with a feeler gauge?