Raise the truck off of the ground and set it on jack stands. The front wheels should be hanging freely with no weight on them.
In front of the middle crossmember, you pull the boot forward to reveal the lock ring. Work a thin screwdriver into the edge of the ring. It will be tight. I had to work the angle back and forth while occasionally tapping the back of the handle with a hammer. Once you get under the ring, work it out slightly. Do not pull the screwdriver away or the ring will pop back in place. After you have worked it off part way, grab the snap ring with some needle nose pliers. Pull the ring off the rest of the way. Be sure to still keep the screwdriver under the lock ring while removing it with the pliers.