Originally Posted by 06lariat4x4
what kind of noise did you hear while driving? what about hen you just spun the tire? i think my hubs are bad as well trying to figure it out!
You will hear a grinding sound if you jack the truck up and spin the tires. While driving the truck it will sound like a growling or humming. Check both sides if you do this. You can have a bad right front and it can sound like its the left front and vise versa. If you do end up replacing wheel bearings make sure you get the O-rings for the Locking hubs. The kit from ford has 2 o-rings and one retaining clip for the hub. You only need 1 o-ring per locking hub. The wheel bearing assy. from ford comes with the big yellow o-ring and the studs for the hub to the knuckle.
It's a pretty easy job. Should take about 1.5 hours per side. maybe less.