I've been hearing some noises every now and then from the front end of my 88 3/4 ton suburban. I pulled off the rims today and the front hub section can move up and down quite a bit and it isn't the ball joints as I checked for movement in them and it seems like it's almost coming from somewhere behind that 4x4 cap. When I bought the truck in california last june I had it checked out by a shop and they said they had to repack that same wheel bearing since it had extra play. My chilton manual doesn't have any pictures to show me how to actually tighten that up, replace the bearings, etc. Can anyone point me in the right direction on how to do this. I'd actually like to swap to warn hubs from the automatic factory ones at the same time if I'm removing the same parts at the same time. Any help would be greatly appreciated.