I need to replace my front rotors, and can't seem to find any thing thathelps with removing them. They are auto 4x4 removed the torx screws 3 of them, but theres another cap under it.... Can't seem to get anything in it to remove it, does any one have any idea on how to do this? This is my first truck with 4X4 and have done my cars/vans brake work on my own vehicles but this is making to annoyed

Links , tools needed..any thing helpful

Thanks
Jay