The 2007 service manual (section RFD) specifies a C-4164 tool for removing and installing the side bearing adjuster. (I don't know if that is exactly the same as the C4164a). What year is your truck?
FWIW, I looked first in the 2014 service manual (my Pro4X is a '14), and there is not much there - just axle or complete rear axle assembly removal - in section RAX, and no section RFD to be found. Fortunately the older manuals have more in-depth info on carrier removal and set-up procedures. Not sure when that changed.
If you need to access the service manual, go to the NICOclub website, join, and you can access the year-specific service manual for your truck.